Waste treatment apparatus and method of treating waste

Abstract

The invention relates to waste treatment equipment, in particular to equipment for treating used diapers. The waste treatment apparatus comprises: a chamber comprising a first opening through which a waste portion is received into the chamber; and a heating member adapted to provide heat to the waste portion in the chamber. Also disclosed are methods of treating waste, in particular methods of treating used diapers.

Description

[0001] The present invention relates to a waste treatment device, in particular to a device for treating used nappies. A method for treating waste, in particular to a method for treating used nappies, is also disclosed.

[0002] introduction

[0003] The problem of how to effectively store waste, in particular household waste such as discarded food or disposable diapers, is well known. The term "diaper" as used herein includes articles known as diapers, such as disposable diapers used by infants, and similar personal hygiene products such as those used by older children and adults.

[0004] The waste may be temporarily stored in ordinary household trash bins before being disposed of with household waste. Waste items, particularly used diapers, often pack inefficiently when stored, meaning that waste (such as that associated with several diaper changes) accounts for a significant proportion of the volume of household waste.

[0005] Storing odorous waste (such as diapers) in household trash bins is not sufficient to prevent odors so that the waste can be stored hygienically, except on a very temporary basis. Plastic bags can be used to wrap used diapers and other waste in an attempt to prevent odor leakage, however these bags have limited effectiveness and often include more plastic than is necessary to wrap the waste, such as one bag per diaper, thus generating unnecessary waste.

[0006] Rather than simply sending the waste to landfill with household waste, some waste foods can be composted. However, the wide variability in the starting materials and processing conditions of waste foods means that the results are variable.

[0007] Once disposed of as household waste, diapers are typically sent to landfills. Such diapers are expected to take decades or even longer to completely decompose. The decomposition process is further prolonged when diapers have been temporarily stored wrapped in plastic. Furthermore, the disposal of diapers in general requires the transportation and landfill storage of very large quantities of used diapers, which can be millions per day. Such large quantities occupy a considerable volume in landfills.

[0008] Some known disposable diapers are composed of constituent materials that attempt to increase the rate at which the diapers decompose. Other waste materials may decompose readily under certain conditions. However, such decomposition will rely on natural decomposition processes, which are slow and easily inhibited by, for example, the contaminated contents of the diapers or associated waste materials and plastic packaging. In addition, the diapers still require the transportation of a very large volume and mass of diapers to a landfill before they can decompose.

[0009] Therefore, it would be useful to at least partially solve, mitigate or eliminate at least one of the problems and / or disadvantages associated with the prior art.

[0010] It would be able to meet the requirements associated with built-in domestic furniture, such as most typical dimensional, aesthetic and hygienic requirements.It would also be useful to be able to produce an operationally reliable device to provide waste disposal simply and inexpensively. SUMMARY OF THE INVENTION

[0012] The invention is set out in the appended claims.

[0013] According to one aspect of the present invention, there is provided a waste treatment device, comprising:

[0014] a chamber including a first opening through which at least one waste portion is received into the chamber; and

[0015] A heating member is adapted to provide heat to the waste portion in the chamber.

[0016] By applying heat to the waste portion (e.g., diapers), the apparatus dehydrates the waste (such as diapers and their contents), thereby reducing its weight. Applying heat can also sterilize the waste, such as diapers and their contents, thereby reducing odors generated during storage. In particular, the temperature can be high enough to ensure effective killing of bacteria.

[0017] Suitably, the device may be a household waste treatment device. More suitably, the device may be a diaper waste treatment device or a food treatment device. In a domestic environment, there are space and aesthetic requirements that are not as important in industrial waste treatment. In this way, the device may be adapted to treat waste to minimize the space occupied and not negatively impact its design. Furthermore, the need for hygiene is greater in the user's domestic environment than in industrial waste treatment, thereby preventing contamination of the living environment.

[0018] Suitably, the waste portion may be one or more of: a diaper or a food waste portion.

[0019] Suitably, the device may be sized to be mounted on a work surface, or mounted within a kitchen enclosure or furniture, such as a work surface or cabinet in a kitchen, or a domestic work surface. For example, the device may have one or more of a height, width or depth of less than 1 m.

[0020] Suitably the apparatus may be freestanding.

[0021] Suitably, the device may be configured to operate using household power. Household power may be AC ​​current supplied at a voltage in the nominal range of 100 to 400 volts, more suitably in the nominal range of 120 to 240 volts. Household power may be supplied at a voltage of nominal 100, 200, 220, 230, 240, 380 or 400 volts.

[0022] Suitably, the device may have an electrical power consumption, typically a peak electrical power consumption of less than 4 kW, less than 3 kW or less than 2 kW.

[0023] The features of the waste disposal apparatus disclosed herein may be features of any of a diaper disposal apparatus or a waste food disposal apparatus according to an aspect of the present invention.

[0024] Suitably, the chamber may be rotatable.

[0025] Suitably, the chamber may be a container comprising a side wall extending from a base to an upper portion.The upper portion may comprise a first opening and optionally a lid closing or partially closing the opening.

[0026] Suitably, the chamber may comprise a central longitudinal axis.In some examples, the chamber may be rotatable about its central longitudinal axis.

[0027] Suitably, the chamber may be removably mountable in the apparatus.

[0028] Suitably, the chamber may comprise a base and a sidewall extending away from the base. More suitably, the sidewall may be tapered or conical. In this way, the chamber may be narrower at the base than away from the base.

[0029] Suitably, the base wall and / or the side walls may be metal. In this way, the base wall and / or the side walls may be thermally conductive so that heat from the heating member is diffused around the chamber. Thus, waste in the chamber is heated more evenly.

[0030] In some examples, the device is configured to process waste in batches. In this way, a user can place waste (e.g., several diapers or portions of food waste) into the chamber to be processed simultaneously.

[0031] Suitably, the chamber may be adapted to receive at least five diapers of at least size 5, preferably five to ten diapers.

[0032] Suitably, the chamber may have a capacity of at least 2 liters, preferably 2 to 5 liters. The dehydration of the waste in the chamber significantly reduces the volume of the waste. The processed waste requires a greatly reduced volume for subsequent storage or disposal. For example, if the waste is diaper waste, the volume may be reduced by up to 90% once processed. Therefore, any downstream container (such as a container associated with the device) for processed waste has an effective storage capacity for a considerable volume of waste before the waste is processed by the device.

[0033] Suitably, the chamber may form a passage for processing the waste as it passes through the chamber. In this way, the chamber may resemble an oven having a first opening through which at least one waste portion is received into the chamber and heated by the heating member.

[0034] Suitably, the heating means may be a radiant heating means or a convection heating means.More suitably, the heating means may be a halogen lamp mounted within the chamber.

[0035] Suitably, the chamber may include a second opening configured to discharge processed waste from the chamber. A user may place waste into the first opening and then process the waste as it passes through the chamber to the second opening. Thus, the apparatus may be configured for continuous processing of waste. In this way, a user may place a first portion of waste (such as a first diaper) into the apparatus for processing and then place a second portion of waste (such as a second diaper) at any time interval after the first portion.

[0036] Suitably, the base wall may include a second opening. More suitably, the second opening is a series of holes extending through the base wall. Typically, the series of holes is several centimeters wide, for example in the range of 2 cm to 15 cm width, preferably in the range of 8 cm to 12 cm width, more preferably with a width of substantially 10 cm. In this way, the opening is sized to keep the waste in the chamber until the waste is fully processed to form small fragments. Typically, when the second opening is arranged in the base wall, the waste is transferred from the top of the device to the bottom during processing. The waste is placed in the first opening at the top of the device and discharged from the second opening at or near the bottom of the device.

[0037] Suitably, the apparatus may include a conveyor assembly to convey waste from the first opening to the second opening. The conveyor assembly may include a suitable movable member, which is typically driven by an electric motor, to convey waste from the first opening to the second opening. The movable portion may include one or more of: a movable belt, a roller, a container, a rotatable screw, a slat or a surface portion. The movable portion may be carried by a movable support member, typically a movable support member driven by an electric motor.

[0038] Suitably, the conveyor assembly may comprise at least one movable belt, preferably at least two movable belts, extending from the first opening to the second opening of the chamber. More suitably, one or more movable belts extend beyond the chamber. That is, one or more movable belts extend upstream of the first opening and / or extend downstream of the second opening.

[0039] Typically, when the conveyor assembly is used to transport waste from the first opening to the second opening, the waste passes through the device laterally during processing. In some examples, the conveyor assembly can be inclined so that the waste moves laterally through the device and is discharged from the device at a lower point to where it is placed.

[0040] Suitably, the conveyor assembly may include a pair of movable belts oriented to cooperatively engage the waste and convey the waste through the chamber. More suitably, the conveyor assembly is operably connected to a controller. The controller may also be connected to a heating member as described herein. The controller may be configured to adjust the speed of the conveyor assembly to determine the time that the waste is in the chamber during processing. That is, the controller may control the residence time of the waste in the chamber by adjusting the speed of the conveyor assembly. Additionally or alternatively, the controller may be configured to determine the temperature to which the waste in the chamber is heated. The controller may be configured to enable the heating member to provide continuous heat to the waste in the chamber or to provide intermittent heat to the waste in the chamber.

[0041] Suitably, the first belt in a pair of movable belts may be oriented to move along a first axis, and the second belt in the pair may be oriented to move along a second axis. More suitably, the first axis and the second axis are not parallel to each other. The first axis and the second axis may be oriented so that the first belt and the second belt move toward each other as they approach the second opening. In this way, the movable belt applies an increased compressive force to the waste as the waste is conveyed toward the second opening.

[0042] Suitably, the device may further comprise a cover for selectively closing the first opening. More suitably, the cover may form an airtight seal with the first opening in use. The cover may be configured to be releasably mounted to the first opening. The cover may be mounted to the first opening by any suitable means, for example via a threaded or bayonet fixing portion arranged to engage with a corresponding feature on the device. Suitably, the cover may comprise an inlet through which the waste portion is received into the first opening of the chamber. The inlet may comprise a removable closure device, such as a plunger or a lid, which is configured to selectively seal the inlet, for example, when the device is in use.

[0043] Suitably, the movable closure device may include a roller arranged in the entrance. The roller has a horizontal axis of rotation. The roller may include an outer surface with a recessed channel in the outer surface. The recessed channel extends in an axial direction along the outer surface. In this way, in use, after the waste portion is placed in the entrance, the user actuates the roller to rotate the roller so that the recessed channel captures the waste and pulls the waste through the entrance. In some examples, the movable closure device may include a pair of rollers with parallel axes of rotation arranged in the entrance. In this way, the user actuates two rollers to rotate in opposite angular directions so that the channels in the outer surfaces of the corresponding rollers cooperatively capture the waste and pull the waste through the entrance.

[0044] Suitably, the roller or roller pair may be actuated manually, for example by moving a handle, or by activating an electric motor to drive one or more of the rollers.

[0045] Suitably, the axes of a pair of rollers may move relative to each other to allow the rollers to move apart as waste is pulled through. The rollers may be made of a rigid material, or may be resilient to better grip the waste.

[0046] Suitably, the apparatus may comprise at least one agitation member. More suitably, the agitation member comprises one or both of at least one blade member or at least one contact element.

[0047] At least one blade member is arranged to protrude into the chamber, wherein the at least one blade member is actuatable in order to agitate waste, such as at least one diaper, in the chamber.

[0048] Suitably, at least one blade member is rotatably mounted within the chamber, typically for rotation about a central longitudinal axis of the chamber. More suitably, at least one blade member and the heating member are rotatably mounted within the chamber for co-rotation about a central longitudinal axis of the chamber. In this way, the apparatus may be configured such that a single electric motor can drive rotational movement of both the blade member and the heating member.

[0049] Suitably, at least one blade member may protrude from a wall portion of the chamber into the chamber. Suitably, at least one blade member may protrude from the heating member into the chamber.

[0050] Suitably, the apparatus may comprise at least one contact element, wherein each contact element is adapted to at least partially disintegrate the waste. More suitably, the contact element may comprise a rough surface, a plurality of protrusions, teeth or serrations, or may comprise one or more patterned or textured regions. The plurality of protrusions, the plurality of teeth, the plurality of serrations, the patterned region or the textured region may be formed by a regular arrangement or an irregular arrangement of a plurality of individual components.

[0051] In this way, the contact element pulls on the outer part of the waste, such as the surface layer of a diaper, to induce disintegration. Further handling of the waste may cause the contact element to wear or cut the fibers of the waste, such as a diaper, thereby accelerating disintegration. As a result, the associated heat causes the waste to be dehydrated faster and more evenly. As a result, odors in the waste are deodorized faster due to exposure to air.

[0052] Suitably, at least one contact element may be mounted on the blade member.

[0053] Suitably, the contact element may be mounted to or formed on any surface of the apparatus to cause disintegration of the waste by relative movement between the waste and the contact element. For example, the contact element may be mounted to or formed on one of the following: a chamber, a blade member, a shredder assembly or a conveyor assembly. The contact element may form part of one or more of the following: a roller, a drum, a cylinder or a movable belt.

[0054] Suitably, the apparatus may include a shredder assembly. The shredder assembly includes at least one contact element movably mounted to the shredder assembly, preferably rotatably mounted in the shredder assembly. The shredder assembly may be positioned at the entrance to the first opening, typically arranged above the entrance to the first opening. In this way, the shredder assembly is located upstream of the chamber so that the waste is substantially disintegrated before being heated in the chamber.

[0055] Suitably, the shredding assembly may include a rotating drum, and at least one contact element is disposed on the drum. For example, the contact element may be a plurality of protrusions, teeth or saw teeth disposed on the outer surface of the rotating drum. The rotating drum may be arranged in the shredding assembly, having a horizontal axis of rotation. In this way, when the user actuates the shredding assembly, the roller rotates so that the protrusions, teeth or saw teeth disintegrate the waste. When the waste is disintegrated into sufficiently small fragments, the drum delivers the fragments into the chamber.

[0056] Suitably, the shredding assembly may include a pair of rotating cylinders, each of which includes a corresponding contact element. Each contact element may be a plurality of projections, teeth or saw teeth arranged on the outer surface of the rotating cylinder. Preferably, the projections, teeth or saw teeth of each cylinder are staggered with each other. A pair of rotating cylinders may be arranged in the inlet with parallel axes of rotation. In this way, when the user actuates the shredding assembly, the two cylinders rotate in opposite angular directions so that the corresponding projections, teeth or saw teeth of each cylinder cooperatively capture and disintegrate the waste, thereby increasing the speed of waste disintegration. When the waste is disintegrated into sufficiently small fragments, the cylinder delivers the fragments into the chamber.

[0057] By arranging the shredder assembly upstream of the chamber, the waste can be substantially disintegrated prior to heating. Thus, by performing the heat treatment within the chamber, the waste can be processed more efficiently. The associated heat causes the waste to be dehydrated more quickly and more evenly, and odors within the waste are deodorized more quickly due to exposure to air. Because the heating time is greatly reduced, the overall waste treatment is more efficient.

[0058] Suitably, the shredder assembly may be configured to perform a cleaning cycle. Most suitably, the cleaning cycle comprises counter-rotating one or more drums. By rotating the drums in the opposite direction to the processing direction, any residue or particles that may be trapped in one or more contact elements are more easily discharged.

[0059] Suitably, the heating member may be a protrusion extending generally from the base of the chamber into the chamber. The heating member may protrude along a central axis of the chamber. Suitably, a proximal portion of the heating member is mounted to the base and a distal portion of the heating member is disposed distally from the base. The proximal portion may be a proximal end portion of the heating member. The distal portion may be a distal end portion of the heating member.

[0060] Suitably, the proximal portion and the distal portion have substantially the same width. Alternatively, the proximal portion may be wider than the distal portion, for example such that at least a section of the heating member is conical. Alternatively, the proximal portion may be narrower than the distal portion, for example such that at least a section of the heating member is inverted conical.

[0061] Suitably, at least one contact element may be mounted on the heating member protruding into the chamber. More suitably, at least one contact element may be an elongated rib extending around the heating member, for example an elongated spiral rib extending around the outer surface of the heating member. The spiral rib may extend around the heating member from a proximal portion to a distal portion of the heating member. Suitably, at least one contact element may be mounted on the sidewall protruding into the chamber. More suitably, at least one contact element may be an elongated rib extending around the sidewall, for example an elongated spiral rib extending around the inner surface of the sidewall. The spiral rib may extend around the sidewall away from the base.

[0062] Suitably, the side wall with the elongated spiral ribs is conical so as to be narrower at the base than away from the base. In this way, the space between the side wall and the heating member decreases towards the base so that as the waste is disintegrated into smaller fragments, these fragments move towards the base. Thus, the waste fragments are distributed along the axial height of the chamber, exposing a greater proportion of the waste directly to the contact element and / or the heating member. The speed at which the waste is processed is thereby increased.

[0063] Suitably, the at least one blade member may comprise a first blade member and a second blade member, wherein a vertical height of the first blade member in the chamber is different from a vertical height of the second blade member in the chamber.

[0064] Suitably, the heating means may provide heat to raise the temperature of at least one waste portion to, for example, at least 50°C, such as at least 60°C, such as at least 70°C. Suitably, the heating means may provide heat to raise the temperature of at least one waste portion to, for example, within the range of 50°C to 90°C, such as 60°C to 90°C, such as 70°C to 90°C, such as 50°C to 80°C, such as 60°C to 80°C, such as 70°C to 80°C, such as 50°C to 70°C, such as 60°C to 70°C, such as 50°C to 60°C. Suitably, the temperature may be selected according to the type of waste. In this way, the temperature may be adjusted to ensure effective killing of any bacteria in the waste.

[0065] Suitably, the heating member may be adapted to provide heat within a predetermined time period. The time period may be, for example, 3 hours, 4 hours, 5 hours, 6 hours, 7 hours, 8 hours or longer. The time period may be adjusted according to the temperature to which the waste is heated, so that the time of heating is adjusted according to the total cycle time required by the user. A required cycle time of 10 hours may mean raising the temperature to at least 50°C, typically 50°C to 60°C, for at least 8 hours. A required cycle time of 4 hours may mean raising the temperature to at least 70°C, typically 70°C to 80°C, for at least 3 hours. The remaining time in any cycle may be utilized to allow the treated waste to cool. Suitably, the time of the heating portion or cooling portion of the cycle may be selected according to the type of waste so that the dehydration and / or disinfection of the waste is effective and efficient.

[0066] Suitably, the heating means may be adapted to provide heat intermittently.

[0067] Suitably, the heating member may be arranged such that at least a portion of the heating member protrudes into the chamber. More suitably, at least a portion of the heating member may protrude from a base of the chamber.

[0068] Suitably, the heating means may comprise an electric heating element. More suitably, the electric heating element may be operably connected to the controller.

[0069] Suitably, the apparatus may include a rotator. More suitably, the rotator may be a rotating arm or member that operably engages and rotates the chamber. Alternatively, the rotator may be a shaft or spindle to operably engage, rotate one or both of the heating member and the blade member.

[0070] Suitably, the apparatus may also include a conduit for extracting air from the chamber. In this way, a negative pressure relative to the surrounding atmosphere may be maintained within the chamber during use. Thus, odors from the waste or generated during the treatment process are retained within the chamber rather than escaping into the surrounding environment. Typically, the conduit includes a fan assembly to draw air from the chamber into the chamber.

[0071] Suitably, the conduit may be fluidly connected to the filter element. More suitably, the filter element may be configured to deodorize, or capture or collect gases or vapors from the air passing through the conduit from the chamber. More suitably, the filter element may be configured to selectively remove certain chemicals from the air passing through the conduit from the chamber. For example, the filter element may include a deodorizing material to remove odors from the air before exhausting the air into the ambient air, or include an absorbent for certain groups of chemicals. The filter element may include activated carbon.

[0072] Suitably, the apparatus may also include a storage chamber for holding processed waste.

[0073] Suitably, the apparatus may also include an ultraviolet lamp configured to irradiate the waste during treatment. In this way, the waste may be more effectively disinfected during treatment.

[0074] Suitably, the apparatus may comprise a detector configured to detect insertion of waste into the first opening.

[0075] Suitably, the apparatus may include a detector configured to detect insertion of waste into the second opening.

[0076] Suitably, the apparatus may include a detector configured to detect the insertion of waste into the chamber.

[0077] Suitably, the detector may be operably connected to the controller to provide a signal to the controller to indicate that waste has been inserted into the first opening, the second opening or the chamber. The controller may be configured to activate one or more of the following in response to the signal received from the detector: a contact member, a heating member, a cover, a movable closure device, a shredding assembly, an ultraviolet lamp, a fan assembly or a conveyor assembly. In this way, the device can provide automated processing of waste, further improving the efficiency of the device.

[0078] According to one aspect of the present invention, there is provided a waste treatment device, comprising:

[0079] a chamber including a first opening through which at least one waste portion is received into the chamber; and

[0080] An agitation member is adapted to agitate the waste portion in the chamber.

[0081] Suitably, the agitating members may be blade members or contact elements.

[0082] According to another aspect of the present invention, there is provided a method for treating waste, the method comprising:

[0083] placing at least one waste portion into the chamber through a first opening of the chamber; and

[0084] Heat is provided to at least one waste portion within the chamber.

[0085] Suitably, the method is a method of disposing of diapers.

[0086] Suitably, the method may further comprise the step of cooling the treated waste.

[0087] Suitably, the step of providing heat may raise the temperature of at least one waste fraction to, for example, at least 50°C, such as at least 60°C, such as at least 70°C. Suitably, the step of providing heat may raise the temperature of at least one waste fraction to, for example, a range of 50°C to 90°C, such as 60°C to 90°C, such as 70°C to 90°C, such as 50°C to 80°C, such as 60°C to 80°C, such as 70°C to 80°C, such as 50°C to 70°C, such as 60°C to 70°C, such as 50°C to 60°C. Suitably, the step of providing heat may raise the temperature of at least one waste fraction to, for example, at least 50°C, or, for example, at least 70°C.

[0088] Suitably, the step of placing at least one waste portion into the chamber may comprise conveying the waste from the first opening into the chamber using a conveyor assembly.

[0089] Suitably, the method further comprises conveying the waste from the chamber to the second opening, whereby the processed waste is discharged from the second opening.

[0090] Suitably, the conveyor assembly may include a movable member, typically driven by an electric motor, to convey the waste from the first opening to the second opening. The movable portion may include one or more of: a movable belt, rollers, a container, a rotatable screw, a slat or a surface portion. The movable portion may be carried by a movable support member, typically a movable support member driven by an electric motor.

[0091] The conveyor assembly may include a pair of movable belts oriented to cooperatively engage the waste and convey the waste through the chamber. The pair of movable belts may be configured to apply a compressive force to the waste. Typically, the pair of movable belts applies an increased compressive force to the waste as the belts approach the second opening.

[0092] Suitably, the method may further comprise the step of agitating at least one of the waste portions within the chamber. The step of agitating the waste may occur at one or more of: before the step of providing heat to the waste, after the step of providing heat to the waste, or simultaneously with the step of providing heat to the waste.

[0093] Suitably, the method may further comprise agitating the at least one waste portion prior to placing the at least one waste portion into the chamber. More suitably, the step of agitating the at least one waste portion may comprise using a shredder assembly as described herein. By arranging the shredder assembly upstream of the chamber, the waste may be substantially disintegrated prior to heating.

[0094] In these ways, the steps of providing heat and agitating the waste can be varied depending on the type of waste. The order of the steps can be adjusted to ensure that different types of waste are processed in the most efficient manner. The combination of agitation and the associated heat causes the waste to be dehydrated more quickly and more evenly. Odors in the waste are deodorized more quickly due to exposure to air. Because the heating time is greatly reduced, the overall treatment of the waste is more efficient.

[0095] Suitably, the step of agitating the at least one waste portion within the chamber may comprise actuating a blade member arranged to protrude into the chamber.

[0096] Suitably, the step of agitating at least one waste portion may comprise partially disintegrating the waste with a contact element.More suitably, the step of agitating the waste may comprise using a shredder assembly as described herein.

[0097] According to another aspect of the present invention, there is provided a method for treating waste, the method comprising:

[0098] placing at least one waste portion into the chamber through a first opening of the chamber; and

[0099] At least one waste portion is agitated within the chamber.

[0100] Suitably, the method may further comprise the step of providing heat to at least one waste portion within the chamber.The step of providing heat to the waste may occur at one or more of: before the step of agitating the waste, after the step of agitating the waste, or simultaneously with the step of agitating the waste.

[0101] It is apparent that features, integers, characteristics or groups described in conjunction with a particular aspect, embodiment or example are to be understood to be applicable to any other aspect, embodiment or example described herein unless incompatible therewith. All features disclosed in this specification (including any accompanying claims, abstract and drawings) and / or all steps of any method or process so disclosed may be combined in any combination, except combinations where at least some such features and / or steps are mutually exclusive.

[0102] As used herein, agitation means moving, grinding, applying pressure, or otherwise exposing waste (such as food or diapers) held in a chamber to the air in the chamber more effectively. Agitation may be accompanied by additional actions, such as physical actions, such as cutting or abrasion. Physical actions during processing, such as those provided by contact members described herein, may cause disintegration of the waste.

[0103] Some examples accelerate the dehydration rate of the waste. In particular, some examples accelerate the aging of diapers. That is, diapers, especially disposable diapers, are treated after use in a manner that accelerates the decomposition of the diapers. Some examples ensure that the waste can begin to decompose even during temporary storage.

[0104] Certain examples reduce odors generated when storing waste after use, particularly during periods when parents and caregivers temporarily store used diapers.

[0105] Certain examples process waste in an energy-efficient manner. Waste, particularly disposable diapers, is processed in some manner to reduce its weight when stored as household or commercial waste after use. Certain examples process waste to reduce its weight by dehydrating the waste and its contents. In particular, certain examples ensure that heat is applied evenly to the waste, thereby increasing efficiency and reducing the number of times it is processed.

[0106] Some examples result in waste, particularly disposable diapers, being treated after use in a manner that improves compaction efficiency for storage in household or commercial waste after use. The dehydration of the waste in the chamber significantly reduces the volume of the waste, and disintegration contributes to compaction efficiency. The treated waste requires a greatly reduced volume for subsequent storage or disposal. For example, if the waste is diaper waste, once treated, the storage volume can be reduced by up to 90%. Therefore, any downstream container (such as a container associated with the device) for treated waste has an effective storage capacity for a considerable volume of waste before the waste is treated by the device.

[0107] Some examples process waste into fragments, i.e., examples cause the waste to disintegrate during the process. The fragments of the waste are in a form that is easier to handle. The fragments can be compacted more efficiently in household waste or in a landfill because the fragments can be compacted into a reduced volume. In addition, since the proportion of waste exposed to its environment increases, the fragmented waste is in a form that is easier to decompose. Fragmented and dried waste may be easier to decompose because the starting material has a more consistent moisture content between batches. BRIEF DESCRIPTION OF THE DRAWINGS

[0109] Embodiments of the invention will now be described hereinafter by way of example only with reference to the accompanying drawings, in which:

[0110] Figure 1 shows a schematic cross-sectional view of a first example diaper handling apparatus;

[0111] Figure 2 shows a schematic cross-sectional view of a second example diaper handling apparatus;

[0112] Figure 3 A first example method of handling diapers is shown;

[0113] Figure 4 A second example method of handling diapers is shown;

[0114] Figure 5 Shows Figure 2 Cross-sectional views of examples of , wherein a diaper a) before treatment and b) after treatment;

[0115] Figure 6 shows a diagram of an example blade member;

[0116] Figure 7 shows a schematic cross-sectional view of a third example diaper handling apparatus;

[0117] Figure 8 shows a cross-sectional schematic diagram of an example waste treatment facility;

[0118] Fig. 9 shows a schematic cross-sectional view of a second example diaper handling apparatus;

[0119] Fig.10 shows a schematic cross-sectional view of a third example waste treatment facility;

[0120] Fig.11 Shows Fig.10 A series of cross-sectional views of an example movable closure device;

[0121] Fig.12 a schematic cross-sectional view showing an example of a continuous waste treatment plant; and

[0122] Fig.13 A schematic cross-sectional view of another example of a continuous waste treatment plant is shown.

[0123] In the drawings, like reference numerals refer to like parts.

[0124] Description of the example

[0125] Certain terms are used in the following description for convenience only and are not limiting. The words "inward", "inwardly" and "outwardly", "outwardly" refer to directions toward and away from a designated centerline or geometric center (e.g., central axis) of the described element, respectively, and their specific meanings are readily apparent from the context of the description.

[0126] In addition, the terms "connected" and "mounted" as used herein are intended to include a direct connection between two components without any other components interposed therebetween, as well as an indirect connection between components in which one or more other components are interposed therebetween. The terms include the words specifically mentioned above, their derivatives, and words of similar meaning.

[0127] Furthermore, unless otherwise indicated, the use of ordinal adjectives, such as "first," "second," "third," etc., merely indicates that different instances of similar objects are referenced and does not imply that the objects so described are necessarily in a given order temporally, spatially, sequentially, or in any other manner.

[0128] Reference now Figure 1 , shows a diaper disposal apparatus 100 comprising a chamber 110 having an opening 105 through which at least one diaper is received into the chamber 110. A heating member 130 is also provided which is adapted to provide heat to the diaper in the chamber 110. As will be appreciated, although the apparatus 100 is described as a diaper disposal apparatus, it will also be adapted to process alternative household waste, such as waste food.

[0129] The chamber 110 includes a base 112 and a sidewall 114 extending away from the base 112. In the example shown, the sidewall 114 extends from a closed end including the base 112 to an open end including the opening 105. The base 112 and the sidewall 114 together enclose the chamber 110.

[0130] The chamber 110 is cylindrical, having a central axis extending perpendicularly to the base 112. The sidewall 114 extends in an axial direction away from the base 112. That is, the sidewall 114 extends in a direction parallel to the central axis.

[0131] In the example shown, the opening 105 is an annular opening. The opening 105 is provided with a removable cover (not shown) configured to fit within the opening 105. The removable cover selectively closes the opening 105, thereby providing an airtight seal for the chamber 110.

[0132] The diaper handling apparatus comprises a heating member 130 extending from the base 112 into the chamber 110. The heating member 130 protrudes along the central axis of the chamber 110. Thus, the heating member 130 extends into the chamber 110 by protruding axially from the base 112.

[0133] The heating member 130 includes an electrical heating element therein. The heating element is connected to a suitable circuit (including a controller). The controller enables the heating element to be selectively activated to control how the heating member 130 provides heat to the diaper in the chamber. Additional examples and details regarding the operation of the heating member 130 are provided herein.

[0134] The proximal end of the heating member 130 is disposed on the base 112. The distal end of the heating member 130 is disposed away from the base 112 and toward the center of the chamber 110. Thus, the heating member 130 has an increased surface area available for providing heat to the diaper. In this manner, the heating member 130 is arranged to efficiently and effectively heat the diaper received in the chamber 110.

[0135] The diaper handling apparatus 100 includes a rotator 150. The rotator 150 is mounted below the chamber 110 and is operably engaged with the chamber 110 to provide rotation to the chamber 110. In one example, the rotator can be a rotating arm or member that operably engages and rotates the chamber. Alternatively, the rotator can be a spindle to operably engage one or both of the heating member or the blade member.

[0136] In the example shown, the chamber 110 is rotatably mounted in the device 100. The wall 114, the base 112, and the heating member 130 are integrally formed so as to rotate together by the rotator 150. In an alternative example, the chamber can be configured so that the rotator provides rotation to one or more of the wall, the base, and the heating member. Thus, the rotator can provide relative rotation between one or more of the wall, the base, and the heating member.

[0137] An electric motor 170 is provided to actuate the rotator 150. The rotator 150 comprises suitable means (not shown) to provide rotational movement to the chamber 110, for example using a suitable belt drive.

[0138] The electric motor 170 is also connected to the controller. Thus, the controller can selectively activate the motor to selectively rotate the chamber 110 via the rotator. The controller can be configured to determine the rotation speed and time period for the chamber 110 to rotate.

[0139] In the example shown, the controller is thus configured to control both the heating of the diapers in the chamber 110 and the rotation of the chamber 110 itself. Efficient treatment of the diapers is thereby provided. In further examples, the controller may be configured to control the heating or rotation of a component of the device (such as a chamber or a heating member). Alternatively, the heating and rotation may be directly controlled by the user, for example, by actuating a switch to start heating or actuating a switch to start rotation.

[0140] Additional references Figure 3 , a flow chart illustrating a method 300 for processing diapers is shown. Figure 1 The method is performed by the example apparatus 100 described. As will be appreciated, while the method 300 is described as being suitable for processing diapers, the method 300 would also be suitable for processing alternative household waste, such as waste food.

[0141] The first step 310 comprises placing at least one diaper into the chamber through a first opening of the chamber. Suitably, the chamber comprises a base and a wall extending away from the base.

[0142] The second step 320 comprises providing heat to at least one diaper in the chamber. Suitably, the heat is provided by a heating member. The heating member may comprise, for example, a heating element and a controller as described herein to selectively provide heat. Suitably, once the desired number of diapers have been placed in the chamber, the user initiates the second step (e.g., by actuating a switch).

[0143] Optionally, the second step 320 raises the temperature of at least one diaper to at least 50° C. The temperature may be maintained for a period of time sufficient to dehydrate the diapers. The period of time may be, for example, 3 hours, 4 hours, 5 hours, 6 hours, 7 hours, 8 hours or more.

[0144] The time period can be adjusted depending on the temperature to which the diaper is heated so that the method can be adjusted depending on the total cycle time desired by the user. A desired cycle time of 10 hours may mean raising the temperature to at least 50°C, typically 50°C to 60°C, for at least 8 hours. A desired cycle time of 4 hours may mean raising the temperature to at least 70°C, typically 70°C to 80°C, for at least 3 hours. The remaining time in any cycle may be used to allow the treated diapers to cool.

[0145] As will be appreciated, in the methods described herein but not shown in the accompanying drawings, a method for treating waste is provided, wherein, in a first step, at least one waste portion is placed into a chamber through a first opening of the chamber. And, in a second step, at least one waste portion is agitated within the chamber. Optionally, a third step may provide heat to the waste within the chamber. Suitably, the heat is provided by a heating member.

[0146] Reference now Figure 2 , shows another diaper processing device 200. In the features and Figure 1 200, the reference numerals also remain the same, but with a "2" as the initial numeral. Thus, the diaper disposal apparatus 200 comprises an opening 205 through which at least one diaper is received into a chamber 210. A heating member 230 is also provided, which is adapted to provide heat to the diaper in the chamber 210. As will be appreciated, although the apparatus 200 is described as a diaper disposal apparatus, it will also be adapted to process alternative household waste, such as waste food.

[0147] The apparatus 200 further comprises a blade member 215 arranged to protrude into the chamber 210. The blade member 215 is actuatable to agitate at least one diaper in the chamber.

[0148] The blade members 215 protrude from the wall 214 into the chamber 210. In the example shown, the blade members 215 protrude from the wall 214 radially towards the central axis of the chamber 210.

[0149] The blade member 215 protrudes above the heating member 230. That is, the axial distance from the base 212 to the blade member 215 is greater than the axial distance from the base 212 to the distal end of the heating member 230.

[0150] The blade member 215 is an elongated blade member that extends around the wall 214 and protrudes into the chamber 210. In particular, the blade member 215 extends around a portion of the circumference of the wall. In this example, the portion is an arc of approximately 20° of the circumference. The elongated blade member 215 extends parallel to the base 212.

[0151] The chamber 210 is rotatably mounted in the device 200. In the example shown, the wall 214, the base 212 and the blade member 215 are integrally formed so as to rotate together by the rotator 250. The heating member 230 protrudes into the chamber 210 but is not integrally formed with the base 212. In this way, the chamber 210 can rotate relative to the heating member 230. The blade member 215 can rotate relative to the heating member 230. The heating member 230 is static.

[0152] The blade member 215 is actuated by the rotation of the chamber 210. The rotation of the blade member 215 agitates the one or more diapers held within the chamber 210. In the example shown, the agitation enables the blade member 215 to provide a pulverizing action to the one or more diapers in the chamber 210. In particular, the blade member 215 pulverizes the one or more diapers in the narrow space between the blade member 215 and the heating member 230.

[0153] An electric motor 270 is provided to actuate the rotator 250 and thereby rotate the chamber 210. The electric motor 270 is also connected to a controller so that the electric motor can be selectively activated to selectively rotate the chamber 210. Thus, the controller enables the device to selectively agitate one or more diapers held in the chamber 210. The controller can be configured to determine the rotation speed and time period for the rotation of the chamber 210. Thus, the controller can be configured to determine the rotation speed and time period for agitating one or more diapers.

[0154] The heating member 230 is Figure 1 An example of a similar approach includes an electric heating element. As described herein, the controller selectively activates the heating element 230. Thus, the controller coordinates both the activation of the heating element 230 and the agitation provided by the blade member 215.

[0155] It should be understood that the heating member of each example described herein can be configured to provide heat to the diaper in a variety of ways. For example, the heating member can provide heat independently of other features of the device (such as actuation of one or more blade members or rotation of the chamber) or in coordination with other features of the device (such as actuation of one or more blade members or rotation of the chamber).

[0156] In this manner, the controller may be configured to determine the time period over which the heating member provides heat to the diaper in the chamber. Additionally or alternatively, the controller may be configured to determine the temperature to which the diaper in the chamber is heated. The controller may be configured to enable the heating member to provide continuous heat to the diaper in the chamber or to provide intermittent heat to the diaper in the chamber.

[0157] The controller may be configured to vary both heating and rotation. In an alternative arrangement, heating and rotation may each be varied by an independent controller.

[0158] Reference now Figure 6 , shows a diagram of a blade member 515. The blade member 515 is similar to the blade member 515 of the embodiment of the present invention. Figure 2 The blade members are mounted to the wall of the chamber in the same manner as described.

[0159] The blade member 515 includes a contact element 516. The contact element 516 is adapted to at least partially disintegrate the one or more diapers placed in the chamber when the one or more diapers are agitated by the blade member.

[0160] In the example shown, the contact element 516 includes a rough surface on the underside of the blade member 515. When the blade member 515 agitates the diaper, the contact element 516 pulls the surface layer of the diaper to cause the disintegration of the diaper during treatment. Additional treatment may cause the contact element to wear or cut the fibers of the diaper, accelerating the disintegration. When the diaper disintegrates, the associated heat causes the diaper to dehydrate faster and more evenly. Optionally, the contact element 516 will also be suitable for agitating and causing the disintegration of replaceable household waste (such as discarded food).

[0161] As will be appreciated, the contact element can be provided in many suitable forms and arrangements, the contact element at least partially disintegrating the diaper during handling. For example, the contact element may include a plurality of protrusions or serrations, or may include one or more patterned or textured areas. The plurality of protrusions, the plurality of serrations, the patterned area or the textured area may be formed by a regular or irregular arrangement of a plurality of individual components.

[0162] Suitably, one or more contact elements may be provided on any surface of the device that may come into contact with a diaper during treatment. For example, a contact element may be provided on any exposed surface of the blade member or on a wall of a chamber into which the blade member projects. A contact element may also be provided on a heating member of the device or on a removable cover thereof.

[0163] Additional references Figure 4 , which shows a flow chart of a method 400 for processing waste (such as diapers). Figure 2 The example device 200 is described as an example device to perform the method.

[0164] Figure 4 The method includes corresponding to the reference Figure 3 The first step 410 of the method described herein comprises placing at least one diaper into the chamber through the first opening of the chamber. Figure 5 As shown in a), at least one diaper 299 may be a used diaper containing liquid and solid waste, formed into a rough ball and secured using diaper fastening tape.

[0165] The second step 420 comprises providing heat to at least one diaper in the chamber. Suitably, the heat is provided by a heating member. The heating member may comprise, for example, a heating element. Figure 3 A heating element and controller are described to selectively provide heating and control cycle duration.

[0166] The third step 430 comprises agitating at least one diaper in the chamber by actuating a blade member arranged to protrude into the chamber. Suitably, actuation of the blade member enables the blade member to provide a comminuting action to the one or more diapers in the chamber.

[0167] Additionally or alternatively, actuation of the blade members may include partially disassembling at least one diaper with a contact element, such as the contact elements described herein.

[0168] Processing the waste using the above method uses a combination of heat and agitation to dry and disintegrate the waste. For example, if the waste is diapers 299, then over a period of several hours, typically from 4 hours to 10 hours, the diapers 299 are broken down into fragments 299', such as Figure 5 b). The fragments 299' ensure that the diapers are in a form that is more easily decomposed. Furthermore, processing a plurality of diapers to provide dry fragments ensures that they occupy significantly less volume in temporary storage for users and in landfills.

[0169] Reference now Figure 7 , another diaper handling device 600 is shown. Figure 2 In the case of the same example, the reference numerals are also the same, but with "6" as the initial number. Therefore, the diaper disposal device 600 includes an opening 605, through which at least one diaper is received into the chamber 610. A heating member 630 is also provided, which is suitable for providing heat to the diaper in the chamber 610. The device 600 also includes a blade member 615 arranged to protrude into the chamber 610, wherein the blade member 615 is actuatable so as to agitate the at least one diaper in the chamber. Likewise, although the device 600 is described as a diaper disposal device, it is also suitable for processing alternative household waste, such as waste food.

[0170] The device further comprises a conduit 682 for extracting air from the chamber 610. The conduit is fluidly connected to the chamber 610 through a second opening 606 in the chamber 610. The second opening 606 is provided in a wall 614 of the chamber 610. Alternatively, the second opening may be provided in the base, the heating member or the blade member.

[0171] In the example shown, the conduit 682 is fluidly connected to a fan unit 680. The fan unit 680 is adapted to draw air from the chamber 610 via the conduit during use. In this way, a negative pressure is maintained within the chamber 610 relative to the surrounding atmosphere.

[0172] The fan unit 680 also includes a filter element (not shown). The filter element is configured to filter the air drawn from the chamber 610 by the fan unit 680. Suitably, the filter element 680 is configured to deodorize the air passing therethrough, or to capture or collect odors. In one example, the filter element includes activated carbon.

[0173] Reference now Figure 8 , shows a waste treatment device 800 having a heating component 830 including a contact element 816 thereon. Figure 1 899 in the chamber 810. The waste received in the chamber may be diaper waste and / or food waste.

[0174] The chamber 810 includes an opening 805 through which waste is received into the chamber 810. A cover 840 fits within the opening 805. The cover 840 closes the opening 805 to provide an airtight seal to the first opening 805 during use. In this way, odors emitted from a portion of the waste 899 during use are retained in the chamber 810 and isolated from the surrounding environment.

[0175] The cover 840 includes an inlet 842 through which waste 899 is received into the first opening 805 of the chamber 810. The inlet 842 has a removable closure device 845 disposed therein. In this example, the removable closure device 845 is a plunger that is selectively removable from the inlet 842. With the plunger removed from the inlet 842, the user is able to place waste 899 into the chamber 810. With the waste 899 placed, the user inserts the plunger into the inlet 842 for use, thereby sealing the inlet 842.

[0176] The heating member 830 extends from the base 812 into the chamber 810 along the longitudinal center axis of the chamber 810. The proximal end of the heating member 830 is disposed on the base 812. The distal end of the heating member 830 is disposed away from the base 812. The proximal portion is wider than the distal portion, so that the heating member is generally conical. Therefore, the heating member 830 has an increased surface area that can be used to provide heat to the waste to efficiently and effectively heat the waste received in the chamber 810.

[0177] The heating element 830 is mounted to the spindle 850 for rotation by the electric motor 870. The spindle 850 is oriented along the central axis of the chamber. The spindle 850 is operably mounted to the electric motor 870 to rotate the heating element 830 relative to the chamber 810. The heating member 830 includes an electric heating element connected to suitable circuitry, including a controller (not shown), so that the heating element 830 can be selectively activated.

[0178] The heating element 830 includes a contact element 816 mounted on the heating member 830 to protrude into the chamber 810. The contact element 816 is an elongated spiral rib extending around the outer surface of the heating member 830. The spiral rib extends around the heating member 830 from the proximal portion to the distal portion of the heating member 830. In this manner, the contact element 816 is similar to a thread on the outer surface of the heating element 830, which is configured to disintegrate the waste 899 into fragments using the thread.

[0179] The sidewalls 814 of the chamber are tapered so as to be narrower towards the base 812 than away from the base 812. The lateral space between the sidewalls 814 and the contact element 816 decreases towards the base 812 of the chamber 810. Thus, in use, as the waste 899 is broken down into smaller fragments, the fragments accumulate towards the base 812 of the chamber 810, maintaining contact with the contact element 816 for effective agitation.

[0180] The apparatus 800 also includes a blade member 815. The blade member 815 is mounted to the spindle 850 for co-rotation with the heating member 830. By mounting both the blade member 815 and the heating member 830 to the same spindle 850, the rotation can be driven by a single electric motor. The blade member 815 is actuatable so as to at least initially agitate the waste within the chamber 810, directing the waste 899 toward the base 812 and onto the contact element 816.

[0181] Reference now Fig. 9, another waste treatment device 900 is shown having a heating member 930 including a contact element 916 thereon. Where features are the same as in other examples, the reference numerals also remain the same, but with "9" as the initial numeral. Thus, the waste treatment device 900 has a chamber 910 including a heating member 930 adapted to provide heat to a portion of waste 999 in the chamber 910. The waste received into the chamber may be diaper waste and / or food waste.

[0182] The device 900 includes a cover 940 having an inlet 942 through which waste 999 is delivered into the first opening 905 of the chamber 910. The inlet 942 includes a removable cover 945 for sealing the entrance to the inlet 942. With the cover 945 removed from the inlet, a user can place waste into the inlet 942.

[0183] The device 900 includes a blade member 915 rotatably mounted on a main shaft 950 and positioned within an inlet 942. The main shaft 950 is oriented vertically within the device 900 so that the blade member 942 rotates horizontally about the main shaft 950 within the inlet 942.

[0184] The blade member 942 includes a series of individual blades, typically four, extending from the main shaft 950 to the periphery of the inlet 942. After the waste is placed into the inlet 942, the blade member 942 is rotated by driving the main shaft 950 to convey the waste 999 to the first opening 905. In this way, the series of blades form an air lock system between the entrance to the inlet 942 and the chamber 910, so that a portion of the waste 999 can be placed in the chamber without odors being discharged back through the inlet of the cover 940.

[0185] The chamber 910 includes a first opening 905 for receiving waste 999, and a second opening 906 configured to discharge processed waste 999' from the chamber 910. Waste placed into the first opening 905 from the inlet 942 is processed as it passes through the chamber 910 to the second opening 906. Thus, the apparatus 900 is configured to continuously process waste 999.

[0186] The heating element 930 is mounted to the main shaft 950 for rotation therewith. The heating element 930 and the blade member 915 are mounted together to the main shaft 950 so that each can be driven by a single electric motor 970.

[0187] The heating element 930 extends radially from the main shaft 950. The heating element extends from the proximal side of the base 912 to the opening 905 at the top of the chamber 910. In this way, the heating element 930 is configured as a blade member 915 within the chamber 910, ie, a second blade member.

[0188] In an alternative arrangement, the heating element may be disposed in the side walls and / or base of the chamber. In this way, the waste is heated by contact with the side walls and / or walls of the chamber. In this arrangement, the second blade member is primarily used to agitate the waste and break it up into fragments.

[0189] The sidewall 914 of the chamber 910 is tapered. The sidewall 914 has a smaller lateral width at the base 912 than at a distance from the base 912. The heating element 930 is also tapered so that the radius toward the base 912 of the chamber 910 is smaller than the radius at the top of the chamber 910.

[0190] The side wall 912 has a first contact element 916a extending around its side wall 914. The first contact element 916a forms a series of annular protrusions in the side wall 914.

[0191] The heating element 930 has a second contact element 916b extending along its peripheral edge. The second contact element 916b is a series of serrations on the peripheral edge.

[0192] The first contact element 916a is cooperatively engaged with the second contact element 916b. In particular, the size and spacing of the series of serrations are configured to be alternately located between the annular protrusions of the side wall 914. In addition, the lateral space between the first contact elements 916a decreases toward the base 912 of the chamber 910. The tapered angle of the side wall 914 is further away from the vertical direction than the tapered angle of the outer surface of the heating member 930. Therefore, in use, when the waste 999 is broken into smaller fragments, the fragments are processed closer to the base 912 of the chamber 930. Through the cooperative action between the tapered side wall 914 and the tapered heating member 930, the fragments of the processed waste 999' are directed toward the second opening 906.

[0193] The apparatus 900 comprises a storage chamber 901. A second opening 906 leads to the storage chamber 901, allowing the processed waste 999' to be discharged from the chamber 910 into the storage chamber 901. Typically, a removable container is provided in the storage chamber 901 to enable easy removal of the processed waste 999'.

[0194] Reference now Fig.10 and Fig.11 , another waste treatment device 1000 is shown. Where features are the same as in other examples, the reference numerals also remain the same, but with "10" as the initial numeral. Thus, the waste treatment device 1000 has a chamber 1010 including a heating member 1030 adapted to provide heat to a portion of waste 1099 in the chamber 1010. The waste received into the chamber may be diaper waste and / or food waste.

[0195] The apparatus 1000 includes a cover 1040 having an inlet 1042 through which waste 1099 is delivered to a first opening 1005 of the chamber 1010. The inlet 1042 includes a removable closure device 1080, such as Fig.11 The closure device 1080 partially receives the waste 1099 into the inlet 1042 and is actuated to rotate the rollers 1084 to capture the waste 1099 and pull the waste 1099 through the inlet 1042.

[0196] Special References Fig.11 , shows a movable closure device 1080 having a roller 1084 arranged in the inlet 1042, the roller 1084 having a horizontal axis of rotation. The roller 1084 includes an outer surface 1082 with a recessed channel 1086 in the outer surface 1082. The recessed channel 1086 extends axially along the outer surface 1082. The recessed channel 1086 is partially covered by an annular wall portion 1087.

[0197] In use, the roller 1084 is in a starting position, such as Fig.11 a), wherein the recessed channel 1086 is oriented upward. The recessed channel 1086 is oriented toward the inlet of the cover 1040 to receive a portion of the waste 1099.

[0198] like Fig.11 As shown in b), after the waste 1099 is placed in the recessed channel 1084, the roller 1084 rotates about its axis to move the waste 1099 through the inlet 1042.

[0199] As roller 1084 rotates further, recessed channel 1084 is oriented toward opening 1005 and waste 1099 exits inlet 1042 , typically under the force of gravity, for subsequent processing within apparatus 1000 .

[0200] The device 1000 also includes a shredder assembly 1060. The shredder assembly 1060 is mounted in the underside of the cover 1040 so as to be removable from the main housing of the device 1000. Alternatively, the shredder assembly may be mounted separately to the housing of the chamber, for example by being positioned over the opening and locked between the housing and the cover by mounting the cover to the housing.

[0201] The shredder assembly 1060 has a pair of rotating drums 1061, 1062, each of which includes a corresponding contact element 1016 on its outer surface. In this example, each contact element 1016 is a plurality of saw teeth disposed on the outer surface of the rotating drum 1061, 1062. The saw teeth of each drum 1061, 1062 are staggered with each other during rotation.

[0202] A pair of rotating drums 1061, 1062 are arranged to have parallel rotation axes and are coordinated to rotate in opposite directions to each other. In this way, when the user actuates the shredder assembly, the two drums 1061, 1062 rotate in opposite angular directions so that when waste 1099 passes between the drums 1061, 1062 and enters the receiving chamber 1030, the corresponding serrations of each contact element 1016 cooperate to capture and disintegrate the waste 1099.

[0203] The apparatus 1000 also has a heating member 1030 in the chamber 1010 in the form of a pair of heating lamps mounted within the chamber 1010. Typically, the heating lamps are halogen lamps that are positioned on either side of the opening 1005 and angled to illuminate the disintegrated waste 1099' held in a container at the base 1012 of the chamber 1010. Typically, the container is a removable container that is provided so that the processed waste 1099' can be easily removed from the chamber 1030.

[0204] By arranging the shredder assembly upstream of the chamber 1030, the waste 1099 can be substantially disintegrated prior to heating. Disintegrating the waste prior to entering the chamber 1030 increases the speed at which the waste 1099 is processed.

[0205] Reference now Fig.12 , another example waste treatment device 1100 is shown. Where features are the same as in other examples, the reference numerals also remain the same, but with "11" as the initial numeral. Thus, the waste treatment device 1100 has a chamber 1110 including a heating member 1130 adapted to provide heat to a portion of waste 1199 in the chamber 1110. The waste received into the chamber may be diaper waste and / or food waste.

[0206] The apparatus 1100 has a chamber 1110 including a first opening 1105 for receiving waste and a second opening 1106 configured to discharge processed waste 1199' from the chamber. Fig.10 and Fig.11 A chopper assembly 1160, which is substantially identical to the chopper assembly described above, is placed into the first opening 1105. The chopper assembly is located within the inlet 1142.

[0207] The apparatus 1100 includes a conveyor assembly 1190 to convey waste from the first opening 1105 to the second opening 1106. The conveyor assembly 1190 includes a movable belt 1191 extending from upstream of the first opening 1105 beyond the chamber 1130 to downstream of the second opening 1106.

[0208] The conveyor assembly 1191 comprises a pair of pulleys (not shown) with a movable belt fixed around each pulley. In use, at least one pulley is motorized to drive the movable belt.

[0209] The chamber 1110 includes a heating element 1130, typically a heat lamp mounted within the chamber 1110. The heating element 1130 is positioned above the movable belt 1191 of the conveyor assembly 1190 and is oriented to illuminate the disintegrated waste 1199' as it is conveyed through the chamber 1110.

[0210] In use, the conveyor assembly 1190 is operably connected to a controller (not shown). Thus, the controller is configured to adjust the speed of the conveyor assembly to determine the time that the waste 1199 is in the chamber during processing. In addition, the controller is also connected to the heating member 1130. The controller is also configured to adjust the heating of the waste 1199 in the chamber 1110.

[0211] The apparatus 1100 also includes a storage chamber 1101. A second opening 1106 leads to the storage chamber 1101. The conveyor assembly 1190 extends into the storage chamber 1101 and is oriented so that processed waste 1199' is discharged from the belt 1191 into the storage chamber 1101. Typically, a removable container 1102 is provided in the storage chamber 1101 to enable easy removal of the processed waste 1199'.

[0212] Reference now Fig.13 , another example waste treatment facility 1200 is shown. Where features are the same as in other examples, the reference numerals remain the same, but with "12" as the initial numeral. Fig.12 The apparatus 1100 described is substantially the same, except that a conveyor assembly 1290 includes a pair of movable belts oriented to cooperatively engage waste and convey the waste through the chamber. In the example, a first belt 1291a of the pair is oriented to move parallel to a second belt 1291b. The conveyor assembly 1290 is operably connected to a controller and used in the same manner as the other examples described herein.

[0213] Various modifications to the apparatus described herein are possible.

[0214] In some examples, the blade member may be configured to protrude from any suitable surface so as to protrude within the chamber.

[0215] Multiple blade members can be arranged on the same surface or on different surfaces. For example, a first blade member can be arranged on the base of the chamber, and a second blade member can be arranged on the wall of the chamber or on the heating member. Each blade member can have a different orientation and shape. Each blade member can have different or matching contact elements.

[0216] One or each blade member may be an elongated blade member. The elongated blade member may extend circumferentially, axially, radially, or in any combination thereof. The elongated blade may extend parallel to the base or wall of the chamber, orthogonal to the base or wall of the chamber, or at an acute angle to the base or wall of the chamber. In one example, the blade member may extend along the base.

[0217] In these ways, the blade members may be modified to optimize agitation of the waste in the chamber.Each blade member may be modified to optimize breakup of the waste being processed, such as by including one or more contact elements.

[0218] In an apparatus having at least two blade members, the blade members may each agitate in the same manner or in different manners. For example, a first blade member may be actuated to rotate in a first direction about the central axis of the chamber, and a second blade member may be actuated to rotate in a second, opposite direction. Alternatively, the first blade member may be actuated and the second blade member may be static.

[0219] In some examples, the blade member is actuated to rotate within the device. Additionally or alternatively, the blade member can be actuated by other movements or a combination of more than one movements. For example, the blade member can protrude into the chamber along the blade axis. The blade member can be actuated by pivoting or rotating around the blade axis. The blade member can be actuated by extending or retracting along the blade axis.

[0220] In some examples, the waste may be agitated within the chamber by means other than the blade members. For example, the waste may be agitated by air jets, such as provided by a fan unit and a conduit that directs air into the chamber through the second opening. Thus, as described above with reference to Figure 7 The duct and fan unit may be reconfigured to provide air to the chamber via the second opening.The air may be directed into the chamber in a pulsed manner.

[0221] Throughout the description and claims of this specification, the words "comprise" and "comprising" and their variations mean "including but not limited to", and they are not intended to (and do not) exclude other chemical components, additives, components, integers or steps. Throughout the description and claims of this specification, the singular encompasses the plural, unless the context requires otherwise. In particular, where the indefinite article is used, this specification should be understood as contemplating the plural as well as the singular, unless the context requires otherwise.

[0222] Features, integers, characteristics or groups described in conjunction with a particular aspect, embodiment or example of the invention will be understood to be applicable to any other aspect, embodiment or example described herein unless incompatible therewith. All features disclosed in this specification (including any accompanying claims, abstract and drawings) and / or all steps of any method or process so disclosed may be combined in any combination, except combinations where at least some of such features and / or steps are mutually exclusive. The invention is not limited to the details of any foregoing embodiments. The invention extends to any novel one or any novel combination of features of the features disclosed in this specification (including any accompanying claims, abstract and drawings), or to any novel one or any novel combination of steps of any method or process so disclosed.

[0223] The reader's attention is directed to all papers and documents which are filed in connection with the present application concurrently with or before the present specification and which are open to public inspection with the present specification, and the contents of all such papers and documents are incorporated herein by reference.

Claims

1. A waste treatment device, comprising: a chamber having a first opening through which a waste portion is received into the chamber; and A heating member is adapted to provide heat to the waste portion in the chamber.

2. A waste treatment plant according to any one of the preceding claims, wherein: The chamber is rotatable.

3. A waste treatment plant according to any one of the preceding claims, wherein: The chamber includes a base and a sidewall extending away from the base.

4. A waste treatment plant according to any one of the preceding claims, wherein: The base wall and / or the side walls are metallic.

5. The waste treatment facility according to claim 1, wherein: The chamber is configured to form a channel, and the waste portion passes through the channel when the heating member provides heat.

6. A waste disposal apparatus according to any preceding claim, further comprising a second opening configured to discharge the waste portion from the chamber.

7. The waste disposal facility of claim 6, further comprising a conveyor assembly for conveying the waste portion from the first opening to the second opening.

8. The waste treatment facility according to claim 7, wherein: The conveyor assembly includes a pair of movable belts oriented to cooperatively engage the waste portions and convey the waste portions through the chamber.

9. Waste disposal equipment according to any one of the preceding claims, further comprising a cover for selectively closing the first opening.

10. A waste treatment plant according to any one of the preceding claims, wherein: The cover includes an inlet having a movable closure configured to selectively seal the inlet.

11. A waste treatment plant according to any one of the preceding claims, wherein: The apparatus further comprises at least one blade member arranged to protrude into the chamber, wherein the at least one blade member is actuatable in order to agitate the waste portion in the chamber.

12. A waste treatment plant according to any one of the preceding claims, further comprising at least one contact element, wherein: Each contact element is adapted to at least partially disintegrate the waste portion.

13. The waste treatment facility according to claim 12, further comprising a shredder assembly, wherein: The chopper assembly has at least one contact element movably mounted therein.

14. The waste treatment facility according to claim 13, wherein: The chopper assembly is positioned at the entrance to the first opening.

15. The waste treatment facility according to claim 12, wherein: The at least one contact element is mounted on the blade member.

16. A waste treatment plant according to any one of the preceding claims, wherein: The heating member is adapted to provide heat for a predetermined period of time.

17. A waste treatment plant according to any one of the preceding claims, wherein: The heating member is adapted to provide heat intermittently.

18. A waste treatment plant according to any one of the preceding claims, wherein: The heating means provides heat to raise the temperature of the waste portion to at least 50°C, preferably to at least 70°C.

19. A waste treatment plant according to any one of the preceding claims, wherein: The heating member is arranged such that at least a portion of the heating member protrudes into the chamber.

20. Waste disposal equipment according to any one of the preceding claims, further comprising a conduit for extracting air from the chamber to maintain a negative pressure within the chamber during use, and optionally wherein, The conduit is fluidly connected to the filter element.

21. A method for treating waste, the method comprising: placing a waste portion into the chamber through a first opening of the chamber; and Heat is provided to the waste portion within the chamber.

22. The method according to claim 21, wherein: The step of providing heat raises the temperature of the waste portion to at least 50°C, and preferably to at least 70°C.

23. The method according to claim 22, wherein: The method also includes agitating the waste portion within the chamber.

24. The method of claim 23, wherein the step of agitating the waste portion comprises partially disintegrating the waste portion with a contact element.

25. A method according to claim 23 or claim 24, wherein: The step of agitating the waste portion occurs simultaneously with the step of providing heat.

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