Powder dispenser

Abstract

The powder dispenser (204) includes a funnel (236) for dispensing a dose of powder through an outlet (243), a vibrator (244) for assisting a flow of powder toward the outlet, a stopper (238), and an actuator (242). The funnel includes an upper portion (237) and a lower portion (241), and a constricted portion (240) disposed along an axis A between the upper portion and the lower portion. The stopper (238) is disposed in the constriction (240), where the constriction (240) is in contact with the stopper (238) in the natural state of the funnel (236) to hermetically insulate the upper portion (237). An actuator (242) is arranged to move one of the lower portion and the upper portion relative to the other along an axis A to open the constriction (240) relative to the stopper (238) to allow powder to flow from the upper portion (237) to the lower portion (241) and towards the outlet (243).

Description

Technical Field

[0001] This invention relates to a powder dispenser and an apparatus for dispensing and weighing powder. Background Technology

[0002] When using powders in a home environment, it is generally desirable to have a dispenser to dispense a specific dose of powder to avoid the user having to touch the powder itself. This may be helpful for dispensing powders that may stain (such as dyes) or powders that are easily contaminated (such as food powders).

[0003] When preparing mixtures using powders (such as food powders), it may be necessary to use specific doses of powder relative to the remaining ingredients in order to quickly prepare safe and delicious food or beverages. In some cases, such as when preparing infant formula from milk powder, the dosage must be as precise as possible. Therefore, a powder dispenser or appliance for dispensing precise doses of powder is desirable.

[0004] Furthermore, many powders are sensitive to moisture, such as food powders, which will spoil if exposed to humid air for extended periods (e.g., in a kitchen). This is particularly concerning in the preparation of infant formula, where exposure to moisture can cause the formula to expire or fail to dissolve properly. Therefore, there is a need for a powder dispenser that protects powder from ambient humidity to avoid waste or the use of spoiled powder.

[0005] The purpose of this invention is to provide a powder dispenser that can dispense precise doses of powder and protect unused powder from environmental impacts when the dispenser is not in use. Summary of the Invention

[0006] From a first aspect, the present invention provides a powder dispenser comprising: A funnel is used to dispense a specific amount of powder through its outlet. A vibrator, configured to vibrate the funnel to assist the powder in flowing toward the outlet; and An actuator configured to selectively seal and unseal an outlet, wherein the outlet is defined by a boundary between the outer surface and the inner surface of the funnel.

[0007] Therefore, it can be seen that, according to embodiments of the present invention, when the powder dispenser is not in use, the actuator can be operated to seal the outlet of the funnel to prevent air and moisture from entering the powder dispenser and potentially damaging any undistributed powder (e.g., powder remaining in the funnel).

[0008] In some embodiments, the powder is a food or beverage powder. Those skilled in the art will see that the present invention is preferably used for dispensing powders (e.g., dispensing food and beverage powders) in a home environment. Therefore, the powder dispenser can be a household powder dispenser.

[0009] The actuator can be configured to selectively seal and unseal the outlet by operating to completely close or open the outlet. In one set of embodiments, the actuator is configured to open the outlet to varying degrees to alter the powder flow rate through the outlet. The actuator can seal the outlet when the powder dispenser is not in use. When the powder dispenser is in use, the actuator can open the outlet to varying degrees between sealing, partial opening, and full opening.

[0010] The actuator can be manually operated, for example, including a mechanism or plug that can be manually moved to seal and unseal the outlet. In at least some embodiments, the actuator operates automatically to selectively seal and unseal the outlet. In one set of embodiments, the powder dispenser may also include a processor configured to automatically control the actuator. The actuator may operate automatically based on the processor receiving input signals, such as input signals from a user or feedback signals from another part of the appliance (e.g., feedback signals from a weighing system described below). Alternatively or additionally, the actuator may be operated automatically by the processor based on the dispensing time (e.g., the dispensing time has been pre-programmed and / or selected by the user).

[0011] The advantage of an automatically controlled actuator is that the outlet is ensured to be sealed after the dispensing cycle without manual intervention. Furthermore, as described below, the automatic control of the actuator can also be used to controllably change the powder flow rate through the outlet.

[0012] In various embodiments, the actuator may include, for example, a ratchet, a servo motor, a geared motor with limit switches, a worm gear, a bevel gear, or other suitable mechanism configured to selectively seal and unseal the outlet. In some embodiments, the actuator is configured (e.g., controlled by a processor) to open the outlet to varying degrees by moving a cap (e.g., a stopper) relative to the funnel (e.g., incrementally or continuously). The actuator may move the cap (e.g., the stopper) from blocking the outlet (i.e., sealing the outlet) to unblocking the outlet (i.e., unsealing the outlet), optionally stopping at one or more intermediate positions to affect the flow rate of powder through the outlet. By varying the powder flow rate through the outlet, the powder dispenser can provide more precise control over the dosage while the dosage is being dispensed. As described above, this can be user-controlled and / or automatically controlled.

[0013] In one set of embodiments, the actuator is configured to continuously open the outlet to continuously change the flow rate. A servo motor or mechanism may be used to continuously move the stopper or cap from a sealed outlet position to an open position of one or more outlets. This allows for fine control of the powder flow rate through the outlet.

[0014] In one set of embodiments, the actuator is configured to adjust the position of the funnel from a first (e.g., upper) position to a second (e.g., lower) position, wherein the outlet is sealed at one of the first and second positions, and wherein the outlet is unsealed at the other of the first and second positions. In at least some embodiments, adjusting the funnel position between the first and second positions is used to change the degree of opening of the outlet, thereby changing the powder flow rate through the outlet.

[0015] In one set of embodiments, the powder dispenser further includes a stopper, wherein the outlet is sealed by the stopper when the funnel is in one of a first position and a second position. Preferably, the stopper is fixed in place, and the actuator is configured to move the funnel relative to the stopper such that when the funnel is in the first (e.g., upper) position, the stopper is positioned to block the outlet, thereby sealing the outlet of the powder dispenser. The funnel can be moved by the actuator to a second (e.g., lower) position, wherein in the second (lower) position of the funnel, the outlet of the powder dispenser is not blocked by the stopper and is therefore completely unsealed. In positions between the first (e.g., upper) position and the second (e.g., lower) position, the outlet may be partially blocked by the stopper, so the flow rate of powder through the outlet can vary between zero (when the outlet is sealed by the stopper) and a maximum value when the outlet is not blocked by the stopper at all.

[0016] In one set of alternative embodiments, the actuator is configured to adjust the position of the stopper (e.g., the funnel may be fixed in place relative to the funnel) from a first position to a second position, wherein the outlet is sealed at one of the first and second positions, and wherein the outlet is unsealed at the other of the first and second positions. In at least some embodiments, adjusting the stopper position between the first and second positions is used to change the degree of opening of the outlet, thereby changing the powder flow rate through the outlet.

[0017] In one set of embodiments, the actuator is configured to adjust the vertical position of the funnel to control the flow rate of powder through the outlet. When the funnel position is vertically adjusted, the flow of powder through the outlet may be aided by gravity. In an alternative set of embodiments, the actuator is configured to adjust the vertical position of the stopper to control the flow rate of powder through the outlet.

[0018] In one set of embodiments, the funnel is made of an elastomeric material (e.g., a natural elastomer or a synthetic elastomer, such as a silicon-based material). For example, when the funnel is made of a flexible material, it can have improved sealing at the outlet.

[0019] In one set of embodiments, the inner circumference of the funnel outlet may be smaller than the outer circumference of the stopper. The stopper can be pressed against the inner circumference of the outlet, causing the elastomeric material to bend and form an airtight seal.

[0020] In one set of embodiments, the stopper is tapered to aid in sealing. For example, the stopper may have a maximum circumference at its upper end and a minimum circumference at its lower end (i.e., the sealing end). The stopper may be tapered to create an airtight seal where the inner circumference of the funnel's outlet is larger than the outer circumference of the stopper's minimum circumference. The stopper may be lowered (or the funnel raised) until an airtight seal is formed.

[0021] In one set of embodiments, the vibrator may be attached to the outer surface of the funnel. This allows vibration to be transmitted to the powder regardless of the funnel's position (i.e., whether the outlet is fully or partially open). However, the vibrator may be an undesirable weight on the funnel and could lead to complexity, at least in those embodiments where the funnel is moved between different positions.

[0022] In one set of embodiments, the vibrator is located in a fixed position adjacent to the funnel. In various embodiments, when the funnel is in a second (e.g., lower) position where the outlet is unsealed, the outer surface of the funnel is brought into contact with the vibrator. The vibrator can cause the funnel to vibrate to help agitate the powder, thereby improving the flow of powder to the outlet when the outlet is open.

[0023] In one set of alternative embodiments, the vibrator can be moved by an actuator from a first (i.e., upper) position to a second (i.e., lower) position, wherein the vibrator is in contact with the outer surface of the funnel when in the first position and is not in contact with the outer surface of the funnel when in the second position. This means that vibration can be selectively applied to the funnel regardless of the funnel's position.

[0024] In one set of embodiments where the funnel is an elastomer, the funnel elastically deforms in response to vibration, which can further facilitate powder flow toward and / or through the outlet. In this set of embodiments, the outer surface of the funnel may deform when brought into contact with the vibrator to achieve optimal transmission of vibration from the vibrator to the powder.

[0025] In one set of embodiments, the funnel is removable, for example, detachable from or detachable from the vibrator and actuator, so that it can be removed from the powder dispenser when not in use. This allows the funnel to be emptied and / or cleaned to prevent any old or expired powder residue from remaining in the funnel. This allows the funnel to be filled or refilled with powder before it is reassembled with the powder dispenser. The funnel may be constructed to be dishwasher-proof.

[0026] In one set of embodiments, additionally or alternatively, the stopper is removable, for example, the stopper is detachable from or removable from the funnel so that it can be removed for cleaning.

[0027] From a second aspect, the present invention provides a powder dispenser comprising: A funnel for dispensing a dose of powder through an outlet, wherein the funnel includes an upper part and a lower part, and a constriction section arranged along an axis between the upper and lower parts; A vibrator configured to vibrate at least the upper part of the funnel to assist the powder in flowing toward the contraction section; A stopper, which is disposed in the contraction section, wherein, in the natural state of the funnel, the contraction section contacts the stopper to seal and insulate the upper part; and An actuator configured to move one of the lower and upper portions along an axis relative to the other, thereby opening the constriction relative to the plug to allow powder to flow from the upper portion to the lower portion and toward the outlet.

[0028] Therefore, it can be seen that, according to an embodiment of the second aspect of the invention, the actuator can be operated to open the constriction section, such that the upper part connects to the lower part, allowing powder to flow from the upper part through the constriction section to the lower part. Those skilled in the art will understand that the “natural state” of the funnel refers to the configuration that naturally and stably exists when no external force is acting on the funnel. In this natural state, i.e., when the actuator is not acting on the funnel, the constriction section has a configuration (e.g., width dimension) that allows it to contact the stopper (e.g., seal around the stopper). This means that when the powder dispenser is not in use, the powder contained in the upper part of the funnel can be sealed and isolated from the outlet of the funnel to prevent air and moisture from entering the upper part and potentially damaging any remaining undistributed powder therein. When the funnel is moved by the actuator, the constriction section is no longer in contact with the stopper, such that the constriction section is opened, the stopper can not block the constriction section, and the powder can flow through the outlet. The relative movement between the upper and lower parts serves to open the constriction section, thereby determining whether the powder can pass through it.

[0029] It should be understood that the contraction is a region of the funnel that is narrower than either the upper or lower portion. The contraction may have a dimension (e.g., a width dimension) in a direction substantially perpendicular to the axis defined between the upper and lower portions of the funnel, which is smaller than the corresponding dimensions of the upper and lower portions. For example, an actuator can open the contraction by moving it downward relative to the stopper and / or by increasing the width of the contraction relative to the stopper.

[0030] In at least some embodiments, the contraction portion has a width dimension (e.g., diameter) that is smaller than the diameter of the stopper (e.g., the diameter of the widest part of the stopper). This means that there is an interference fit when the funnel is in its natural state, ensuring a tight seal at the contact point between the contraction portion and the stopper.

[0031] Furthermore, this dimension of the contraction section (e.g., its width) can vary from its maximum value when the contraction section is opened by the actuator to its minimum value when the funnel is in its natural state. The corresponding dimensions of the upper and / or lower parts may not change substantially when the funnel is adjusted between its expanded and natural states. Preferably, the opening degree of the contraction section is variable, for example, the contraction section has a variable width.

[0032] In some embodiments, the upper part may be truncated conical. In some embodiments, the lower part may be truncated conical. For example, the funnel may be hourglass-shaped.

[0033] When the funnel is in its natural state, the upper part is sealed and isolated by a stopper at the constriction. This means that powder contained in the upper part of the funnel cannot flow through the constriction to the lower part and therefore cannot be dispensed through the outlet. The funnel's natural state can seal and isolate the upper part by narrowing the diameter of the opening of the constriction; that is, the constriction may narrow as the funnel retracts towards its natural state. The sealing effect may originate from the constriction sealing the surface around the stopper to seal the upper part. The sealing effect may also originate from the constriction being made narrow enough that powder bridging prevents powder from flowing from the upper part to the lower part.

[0034] The stopper can be configured such that, when the constriction is opened, the constriction allows powder to flow through the stopper from top to bottom, and thus to the outlet of the funnel. For example, the constriction can azimuthally seal around the stopper when the funnel is in its natural state.

[0035] Preferably, the stopper is fixed in place, and the actuator is configured to move the lower (and / or upper) portion relative to the stopper such that when the funnel is in its natural (i.e., contracted) position, the stopper is positioned to block the contraction, thereby sealing and isolating the upper portion of the funnel and closing the powder dispenser. In some examples, when the contraction is opened by the actuator, the funnel can be expanded by the actuator so that the contraction of the funnel is no longer blocked by the stopper, thus completely unsealing the upper portion of the funnel. In some examples, the flow of powder may be partially impeded by the stopper in the position between the funnel's natural state and the fully open state of the contraction. The flow rate of powder through the contraction can vary (e.g., continuously) between zero (when the contraction is blocked by the stopper in its natural state) and a maximum value when the flow of powder through the contraction is minimally blocked by the stopper.

[0036] In some embodiments, the actuator is configured to move the lower portion of the funnel relative to the upper portion of the funnel. For example, the actuator may be attached to the lower portion of the funnel such that it can move upward to close the constriction and downward to open the constriction. In at least some embodiments, adjusting the funnel between a natural state and an expanded state serves to change the degree of opening of the constriction and the degree of contact (e.g., sealing) between the constriction and the plug, thereby changing the flow rate of powder through the constriction. Thus, the actuator can regulate the flow rate of powder through the outlet by adjusting the state of the funnel between a natural state (e.g., zero flow rate) and a fully expanded state (e.g., maximum flow rate).

[0037] In some embodiments, the upper, lower, and constricted portions include multiple concentric rings. Therefore, the funnel has a circular geometry in cross-section. In some embodiments, both the upper and lower portions may include concentric rings of substantially the same diameter. In some embodiments, the lower portion may include concentric rings with a smaller diameter than the concentric rings of the upper portion, i.e., the lower portion is generally narrower than the upper portion. The constricted portion includes concentric rings with a smaller diameter than both the concentric rings of the upper and lower portions.

[0038] In some embodiments, the powder dispenser is used for food powder or beverage powder. Those skilled in the art will see that the present invention is preferably used for dispensing powders (e.g., dispensing food powder and beverage powder) in a home environment. Therefore, the powder dispenser can be a household powder dispenser.

[0039] The actuator can be configured to selectively seal and unseal the upper portion of the funnel by operating to close (e.g., fully close) or open the contraction portion. In one set of embodiments, the funnel may include at least one fold between the upper and lower portions, such that moving the funnel to expand the fold acts to open the contraction portion relative to the stopper. For example, the funnel may (e.g., with respect to the fold) fold like an accordion to move between a natural state and an expanded state. The actuator can be configured to move the funnel from a natural state of the folded state to another natural state of the expanded state. In some examples, the funnel may be bistable. The actuator can be configured to move the funnel bistable between its folded and expanded states. In such embodiments, the contraction portion may include a fold extending azimuthally around the funnel along an axis defined between the upper and lower portions.

[0040] In one set of embodiments, the actuator is configured to change the flow rate of powder through the contraction section by stretching the funnel to different degrees between its natural state and one or more expanded states, thereby opening the contraction section to varying degrees. When the powder dispenser is in use (e.g., dispensing powder), the actuator can operate to unseal the upper part of the funnel to varying degrees between sealed, partially open, and fully open by expanding the funnel from its natural state, partially expanded state, and fully expanded state.

[0041] In any of the embodiments described herein, the flow of powder from top to bottom through the contraction section can be aided by gravity.

[0042] The actuator can be manually operated, for example, by including a mechanism attached to the funnel that can be manually moved to seal and unseal the upper part of the funnel by expanding the funnel and thus opening the contraction. In at least some embodiments, the actuator operates automatically to selectively seal and unseal the upper part of the funnel. In one set of embodiments, the powder dispenser may also include a processor configured to automatically control the actuator. The actuator can operate automatically based on the processor receiving an input signal, such as an input signal from a user or a feedback signal from another part of the apparatus (e.g., a feedback signal from a weighing system described below). Alternatively or additionally, the actuator can be operated automatically by the processor based on a dispensing time or dispensing program (e.g., the dispensing time or dispensing program has been pre-programmed and / or selected by the user).

[0043] The advantage of an automatically controlled actuator is that the upper part of the funnel is ensured to be sealed after the dispensing cycle without manual intervention. When the actuator is not acting on the funnel, the funnel's natural state ensures that the contraction contacts the stopper, thereby sealing the upper part of the funnel, which further contributes to achieving the aforementioned advantages. Furthermore, as described further below, the automatic control of the actuator can also be used to controllably change the flow rate of powder through the outlet, for example, in response to a feedback signal.

[0044] In some embodiments, the upper part of the funnel comprises a larger volume than the lower part of the funnel. This can be useful when the upper part of the funnel is configured to store a large amount of powder (e.g., as a powder reservoir).

[0045] In some embodiments, the funnel is mounted to contact the vibrator. In some embodiments, the funnel is brought into contact with the vibrator when the constriction is opened (i.e., when the upper part of the funnel is unsealed). Preferably, the vibrator is fixed in place; however, in some embodiments, the vibrator may be adjustable in position relative to the funnel. In some embodiments, there may be multiple vibrators configured to contact the funnel when the constriction is open (e.g., at least). The vibrator may be mounted to an annular member that may additionally support the upper part of the funnel. For example, the annular member may be flexible, such as being made of an elastomeric material, and may isolate the vibrator from the rest of the powder dispenser so that the vibrator can oscillate throughout its range of motion. Furthermore, the annular member may deform when the vibrator contacts the funnel.

[0046] In some embodiments, the funnel is made of an elastomeric material (e.g., a natural elastomer or a synthetic elastomer, such as a silicone-based material). For example, when the constriction is only partially open, such as when the funnel is only partially expanded, the funnel can be brought into contact with the vibrator to assist the powder flow toward the constriction. When the constriction is fully open, such as when the funnel is fully expanded, the funnel can elastically deform to accommodate the expansion of the funnel and contact with the vibrator, such as when the constriction is open and the upper part of the funnel is unsealed. Furthermore, the elastomeric material can improve the seal between the funnel and the stopper at the constriction.

[0047] In some embodiments, the actuator is configured to elastically deform the funnel to open the constriction relative to the stopper. The funnel's natural state can be a state where the funnel does not elastically deform, for example, where the constriction seals around the stopper without elastic deformation. Therefore, when the actuator opens the constriction, the funnel can elastically deform to accommodate the expansion of the funnel, to open the constriction and unseal the upper part of the funnel, for example, by widening the constriction so that it no longer seals around the stopper and / or by moving the constriction away from the stopper. When the force from the actuator is removed from the funnel, the funnel can elastically return to its natural state, for example, where the upper part of the funnel is sealed.

[0048] In one set of embodiments, for example, where the funnel is an elastomer, the funnel elastically deforms in response to vibration, which can further facilitate the flow of powder toward and / or through the constriction. In this set of embodiments, the funnel may deform upon being brought into contact with the vibrator to achieve optimal transmission of vibration from the vibrator to the powder.

[0049] In some embodiments, where the contraction includes a circular opening, the stopper comprises a cylinder. In some embodiments, when the funnel is in its natural state, the diameter of the widest portion of the stopper is substantially the same as the width of the contraction, thereby forming a seal between the contraction and the stopper, preventing powder from escaping from the upper part of the funnel to the lower part. In some embodiments, where the funnel is made of an elastomeric material, the inner width of the contraction may be smaller than the diameter of the widest portion of the stopper. The stopper can be pressed against the inner surface of the contraction, causing the elastomeric material to bend and form an airtight seal.

[0050] In some embodiments, the stopper is tapered to aid in sealing. For example, the stopper may have a maximum circumference at its upper end and a minimum circumference at its lower end (i.e., the sealing end). The stopper may be tapered to form an airtight seal where the inner circumference of the funnel's contraction is larger than the outer circumference of the stopper's minimum circumference. In some embodiments, the stopper may include a dome-shaped portion and / or a spherical portion, for example, at the end of the stopper. This aids in sealing the contraction in the funnel's natural state.

[0051] In some embodiments, regardless of whether the stopper is tapered, the stopper includes a stepped portion that is wider than the lower end (i.e., the sealing end) of the stopper. This prevents the constricted portion of the funnel from moving too high on the stopper when the actuator acts to seal the constriction. For example, if the constriction is too high on the stopper, it may not be able to pass over the lower end of the stopper when the actuator moves the lower part of the funnel downward to open the funnel, and therefore may not open properly.

[0052] In some embodiments, the upper portion of the funnel may be reinforced relative to the lower portion. For example, the upper portion may include one or more rigid support elements (e.g., spokes) to help prevent the upper portion of the funnel from collapsing. For example, the rigid support elements may be embedded in the upper portion of the funnel, such as sandwiched between or overmolded by layers of elastomeric material constituting the upper portion of the funnel. Additionally, or alternatively, the upper portion of the funnel may be made of a material that is harder than the lower portion of the funnel.

[0053] Strengthening the upper part of the funnel relative to its lower part facilitates movement of the lower part relative to the upper part, making it easier for the funnel to contract. Furthermore, strengthening the upper part of the funnel helps prevent deformation, such as denting, of the funnel under the weight of undistributed powder. This allows the powder to flow towards the contraction point and then towards the outlet.

[0054] Preferably, the actuator is configured to move the lower portion of the funnel downward relative to the upper portion of the funnel, which is substantially supported or fixed in place. In some embodiments, a rigid element (e.g., a rigid actuation ring) may be included in or attached to the lower portion of the funnel. For example, the lower portion of the funnel may include a rigid actuation ring located at the outlet of the funnel, such that the rigid actuation ring surrounds the entire outlet of the funnel. This facilitates opening the constriction portion by the actuator. For example, in embodiments where the funnel is made of an elastomeric material, the actuator can more easily access (e.g., grasp) and translate the rigid element to expand the funnel without clamping it.

[0055] In one embodiment, the actuator pulls a rigid element downward to open the contraction. The actuator may include a rotating mechanism comprising a set of retractable grippers, wherein rotation of the rotating mechanism brings one or more of the retractable grippers into contact with the rigid element. The rotating mechanism may be configured to move the grippers radially inward before the grippers move linearly downward to contact the top of the rigid element. The rotating mechanism may be configured to move the rigid element downward by pushing it down with the grippers, thereby moving the lower part of the funnel downward. This can increase the width of the contraction and unblock the upper part of the funnel. Using a rotating mechanism can help maintain the compactness of the powder dispenser.

[0056] For example, when the powder dispenser is in use, the rotating mechanism can rotate to contact the rigid element, then move the grippers downward to unseal the upper portion. The actuator in the form of a rotating mechanism can, for example, use a ramp to convert the rotational motion into linear motion of the rigid element and the lower portion of the funnel. The rotating mechanism may alternatively include clamps attached to the rigid element; however, preferably, the grippers of the rotating mechanism push downward on the rigid element to move the lower portion of the funnel downward while avoiding squeezing or rotating the funnel. The grippers can extend to contact the funnel, thereby moving the constricted portion from its natural state to its open state. The grippers can retract to move the funnel back to its natural state, for example, by returning it to its natural state in an elastic manner, such that the grippers can retract so that the actuator no longer acts on the funnel.

[0057] The rotating mechanism may include at least one gripper. Preferably, the rotating mechanism includes three grippers, such that there are three contact points with the funnel, such that the rigid element acts with substantially the same force on all sides, causing the contraction section to open evenly.

[0058] The rotating mechanism can be symmetrical about the azimuth angle, allowing the funnel to be positioned at any angle within the rotating mechanism, while still enabling the rotating mechanism to act on the rigid ring. This can be useful if the powder dispenser needs to be reassembled (e.g., after cleaning and / or refilling).

[0059] In one set of embodiments, the lower portion of the funnel includes an outer portion and a guide portion, wherein the guide portion is narrower than the outer portion, and wherein the guide portion includes an inlet leading to a constriction and an outlet of the funnel; and wherein the guide portion is configured to restrict the flow of powder toward the outlet of the funnel, making it substantially parallel to the axis of the funnel. This helps prevent powder from leaving the funnel at a large angle relative to the axis (e.g., an angle nearly perpendicular to the axis of the funnel), instead guiding most of the powder leaving the funnel through the outlet to fall directly below the funnel, for example, onto a weighing tray of an appliance. In at least some embodiments, the guide portion is substantially coaxial with the outer portion. The guide portion may be longer than the lower portion of the funnel, for example, to guide the powder more precisely. The guide portion may be tapered, for example, the guide portion may be narrower at its lower end toward the outlet than at its upper end toward the constriction. In some examples, the guide portion may include a separate component (e.g., a detachable tubular piece) that may be attached to the lower portion of the funnel (e.g., attached to the inside of the outer portion of the funnel). Preferably, the guide portion is integrated with the funnel. For example, the funnel, including the guide section, is molded as a single piece, for example, made of plastic or elastomeric material.

[0060] Preferably, the actuator is configured to move the outer portion of the lower part of the funnel downwards relative to the upper part of the funnel. For example, a rigid actuation ring is contained within or attached to the outer portion of the lower part of the funnel. The rigid actuation ring may surround the entire outer portion of the lower part of the funnel. This allows the actuator to move the lower part of the funnel up and down to expand and contract the funnel (thus opening and closing the contraction section) while avoiding pinching the guide section, thereby preventing powder from being discharged from the outlet.

[0061] It should be understood that the funnel itself, including the contraction section, the plug, and the actuator, can be considered novel and inventive; therefore, from a third aspect, the present invention provides a powder dispenser comprising: A funnel for dispensing a dose of powder through an outlet, wherein the funnel includes an upper part and a lower part, and a constriction section arranged along an axis between the upper and lower parts; A stopper, which is disposed in the contraction section, wherein, in the natural state of the funnel, the contraction section contacts the stopper to seal and insulate the upper part; and An actuator configured to move one of the lower and upper portions along an axis relative to the other, thereby opening the constriction relative to the plug to allow powder to flow from the upper portion to the lower portion and toward the outlet.

[0062] In some embodiments, the powder dispenser includes a powder reservoir configured to be in fluid communication with a funnel. In some embodiments, both the powder reservoir and the funnel are removable from the powder dispenser. This is considered novel and inventive in itself, and therefore, from a fourth aspect, the present invention provides a powder dispenser comprising: Powder storage container; A funnel for dispensing a measured dose of powder from a powder reservoir through an outlet, wherein the funnel is configured to be in fluid communication with the powder reservoir; Mounting base, configured to receive a funnel thereon, wherein the mounting base includes an opening configured to align with the outlet of the funnel; One or more vibrators configured to contact a mounting base, wherein the vibrators are configured to vibrate the outer surfaces of the mounting base and the funnel to assist the powder to flow toward the outlet; The funnel and powder reservoir are removable from the powder dispenser; The funnel is designed to be removable from the powder reservoir to allow the powder reservoir to be filled with powder.

[0063] Therefore, it can be seen that, according to the fourth aspect of the invention, the powder reservoir and funnel can be removed from the powder dispenser. This allows the powder reservoir to be refilled, for example, in a different location from the powder dispenser. Both the powder reservoir and funnel can be cleaned when removed, for example, by placing them in a dishwasher. This helps prevent powder contamination within the powder dispenser, such as preventing the dispensing of old powder, such as moldy powder.

[0064] The same powder dispenser can be used with different powder reservoirs and funnels. For example, in a childcare setting, there may be children with milk allergies. Therefore, it is useful to be able to replace powder reservoirs and funnels that have been in contact with dairy powder with those that only hold lactose-free powder, so that there is no need to clean the powder reservoirs or funnels between dispensing different types of powder.

[0065] The mounting base is configured to receive the funnel so that it can be repositioned in the powder dispenser after removal. For example, the mounting base could have the same shape as the funnel to facilitate its return to the powder dispenser. The vibrator, which contacts the mounting base, can be positioned below the mounting base, for example, on the opposite side of the mounting base relative to the funnel. This prevents the user from touching the vibrator when removing / replacing the funnel.

[0066] One or more vibrators are configured to contact the mounting base such that vibration is transmitted to the mounting base and the funnel, for example, via the mounting base to the funnel when the mounting base is positioned between one or more vibrators and the funnel.

[0067] In some embodiments, the mounting base includes a rigid base attached to one or more springs. One or more vibrators can cause the mounting base to vibrate on the springs, thereby transmitting vibration to the funnel. In some other embodiments, the mounting base includes an elastic base, such that one or more vibrators can cause the mounting base itself to vibrate. Preferably, the mounting base is made of an elastomeric material (e.g., a natural elastomer or a synthetic elastomer, such as a silicone-based material). This can aid in transmitting vibration to the funnel, for example, by vibrating the mounting base itself via one or more vibrators, thereby transmitting vibration to the funnel and the powder to help the powder flow toward the outlet.

[0068] In some embodiments, the funnel is made of an elastomeric material, such as a natural elastomer or a synthetic elastomer, such as a silicon-based material. This can help transmit vibrations from the funnel to the powder, thereby aiding in the flow of the powder toward the outlet. For example, vibrating the powder may break up agglomerates within the powder and cause the powder to flow toward the outlet (e.g., under the influence of gravity), where the outlet is located at the lowest part of the funnel.

[0069] The funnel and powder reservoir are removable from the powder dispenser, and the funnel is also removable from the powder reservoir. For example, the funnel can be attached to the powder reservoir while both the funnel and the powder reservoir are inside the powder dispenser. This allows the funnel and powder reservoir to be removed separately from the powder dispenser. In some embodiments, the funnel and powder reservoir are attached to each other such that the funnel and powder reservoir can be removed from the powder dispenser simultaneously. For example, the funnel can be detachable from the powder reservoir when being removed from the powder dispenser, thereby allowing the funnel to be removed from the powder reservoir when both the funnel and the powder reservoir have been removed from the powder dispenser.

[0070] In one set of embodiments, one of the powder reservoir and the funnel includes an attachment means for removably attaching to the other of the powder reservoir and the funnel. For example, the powder reservoir or funnel includes one or more clips configured to attach the powder reservoir to the funnel (or vice versa). The attachment means (e.g., the clips) can be removed (e.g., released) to detach the powder reservoir from the funnel to allow cleaning and / or refilling of the powder reservoir and the funnel.

[0071] For example, each clip can be attached to a powder reservoir or funnel via a hinge. The funnel or powder reservoir can have one or more flanges such that when the powder reservoir and funnel are placed together, one or more clips of the powder reservoir can be attached to the corresponding flange of the funnel, or one or more clips of the funnel can be attached to the corresponding flange of the powder reservoir. This allows the powder reservoir and funnel to be removed from the powder dispenser simultaneously and prevents powder leakage when the funnel and reservoir are removed from the powder dispenser.

[0072] In one set of embodiments, the mounting base includes one or more movable hinges configured to attach the funnel to the mounting base. For example, the movable hinges can automatically attach the funnel to the mounting base when it (e.g., and a powder reservoir attached to the funnel) is placed into the powder dispenser. The movable hinges can allow the funnel to align with the mounting base when it is returned to the powder dispenser, ensuring that the outlet of the funnel and the opening of the mounting base are aligned so that powder can be dispensed. This can also allow one or more vibrators in contact with the mounting base to align with the funnel, for example, to allow vibration to be effectively transmitted from the vibrators to the powder within the funnel.

[0073] In one set of embodiments, the powder dispenser includes a stopper configured to selectively seal and unseal the outlet of the funnel. For example, the stopper is configured to seal the outlet of the funnel when the funnel is removed from the powder dispenser to prevent powder leakage from the outlet of the funnel.

[0074] In some embodiments, the stopper is removable, for example, the stopper can be removed from the funnel and powder reservoir. For example, the stopper is a separate part from the funnel and powder reservoir and can be installed independently of them. For example, the stopper can be positioned within the funnel, resting on the funnel (e.g., the outer periphery of the funnel) via multiple spokes attached to the upper end of the stopper (i.e., the end of the stopper away from the outlet of the funnel). For example, the stopper can be repositioned within the funnel when the funnel is returned to the powder dispenser. This allows the stopper to hold itself above the outlet of the funnel, allowing the funnel to move relative to the stopper to seal and unseal the outlet. This allows the stopper to be cleaned separately from the powder reservoir and funnel.

[0075] In one set of embodiments, a stopper is included within the reservoir. Preferably, the stopper is permanently attached to the reservoir, for example, molded into the powder reservoir. For example, the stopper and the powder reservoir can be integral units such that when the powder reservoir is removed from the funnel, the stopper is also removed from the funnel. This reduces the number of parts required to assemble the powder dispenser after cleaning. Furthermore, this reduces the risk that the user may forget the stopper or misalign the funnel and stopper when placing the funnel, stopper, and powder reservoir back into the dispenser after refilling and / or cleaning, thereby reducing the risk that the stopper may not properly seal the outlet. For example, preferably, the removable powder reservoir includes a stopper such that the stopper is correctly positioned relative to the funnel when the powder reservoir is attached to the funnel.

[0076] In one set of embodiments, the stopper is configured to seal the funnel when the powder reservoir and funnel are removed together from the powder dispenser. For example, when positioned in the powder dispenser, the powder reservoir may be positioned above the funnel, allowing gravity-assisted powder flow from the powder reservoir toward the funnel. Therefore, sealing the funnel with the stopper is useful when both the powder reservoir and the funnel are removed from the powder dispenser to prevent powder from overflowing from the bottom of the funnel as the funnel, stopper, and powder reservoir are removed from the powder dispenser.

[0077] For example, the powder reservoir and funnel can be removed from the powder dispenser and then inverted so that the funnel acts as a lid for the powder reservoir. The funnel can then be removed from the powder reservoir to allow for cleaning and / or refilling of the powder reservoir and funnel.

[0078] In one set of embodiments, the powder dispenser includes an actuator configured to selectively seal and unseal the outlet of the funnel. For example, when the funnel and powder reservoir are placed on a mounting base of the powder dispenser, the mounting base aligns the outlet of the funnel with the actuator, enabling the actuator to selectively seal and unseal the outlet to allow powder to be dispensed from the funnel. For example, the actuator may cover and expose the outlet of the funnel to allow for variations in the flow rate of powder exiting the funnel.

[0079] Preferably, the actuator is configured to adjust the position of the funnel relative to the plug to selectively seal and unseal the funnel's outlet. For example, the position of the funnel can be adjusted by the actuator to change the flow rate through the outlet.

[0080] In some embodiments, the actuator is configured to adjust the position of the funnel from a first (e.g., upper) position to a second (e.g., lower) position, wherein the outlet is sealed in one of the first and second positions, and unsealed in the other of the first and second positions. In some embodiments, the actuator is configured to adjust the vertical position of the funnel to control the flow rate of powder through the outlet. In some embodiments where the powder dispenser also includes a stopper, the outlet is sealed by the stopper when the funnel is in one of the first and second positions.

[0081] In one set of embodiments, the funnel includes an upper portion and a lower portion, and a constriction portion disposed along an axis between the upper and lower portions; wherein a mounting base is configured to support the upper portion of the funnel, wherein an opening of the mounting base is configured to surround the constriction portion, and the lower portion of the funnel is disposed below the mounting base; and the powder dispenser includes an actuator configured to move the lower portion relative to the upper portion along the axis, thereby opening the constriction portion to allow powder to flow from the upper portion to the lower portion and toward the outlet. In some embodiments where the powder dispenser also includes a stopper and an actuator, the stopper is disposed in the constriction portion, wherein, in the funnel's natural state, the constriction portion contacts the stopper to seal and insulate the upper portion; and the actuator is configured to move one of the lower and upper portions along the axis relative to the other of the lower and upper portions, thereby opening the constriction portion relative to the stopper to allow powder to flow from the upper portion to the lower portion and toward the outlet. In some embodiments, the funnel may include a guide portion as described above.

[0082] The stopper can be configured to extend into the funnel (e.g., the constriction section) when the reservoir is attached to the funnel.

[0083] In other embodiments, the same actuator (or another actuator) may be configured to dispense a dose of powder through the constriction section at an adjustable flow rate. For example, as described in more detail above, the opening of the constriction section of the funnel relative to the stopper can be adjusted by the actuator, for example, by expanding the funnel through the actuator to change the flow rate through the constriction section. In various embodiments, the actuator is configured to open the constriction section to different degrees to change the flow rate of powder through the outlet.

[0084] The mounting base aligns the funnel with the actuator when it is returned to the powder dispenser. For example, as explained above, the actuator can pull the funnel downwards, for instance, to open the constriction section. The actuator may include a rotating mechanism comprising a set of retractable grippers, wherein rotation of the rotating mechanism brings one or more of these retractable grippers into contact with the funnel. Therefore, it is useful for the mounting base to properly align the funnel with the actuator, which would otherwise prevent the actuator from accurately adjusting the funnel's position to control the powder flow rate through the outlet.

[0085] For example, when the actuator pulls the funnel downwards (e.g., to open the constriction), if the funnel is made of an elastomeric material, the upper part of the funnel can be brought into closer contact with the mounting base. Therefore, when the actuator opens the constriction, the transmission of vibration from (one or more) vibrators to the funnel can be improved, and thus the powder flow can be improved. This can be useful because the funnel may not need to be in good contact with the mounting base when it is returned to the powder dispenser in order to transmit vibration to the powder during the use of the powder dispenser.

[0086] In some embodiments, one or more vibrators are positioned adjacent to an opening in the mounting base. For example, vibrators positioned adjacent to an opening in the mounting base are all positioned closest to the outlet of the funnel. This can facilitate the flow of powder toward the outlet. In some embodiments, the vibrators are evenly spaced around the opening in the mounting base.

[0087] In some embodiments, the vibration axes of one or more vibrators are configured perpendicular to the contact surface of the funnel. This allows for efficient transmission of vibration to the powder through the mounting base and / or the funnel. In some embodiments, one or more vibrators are eccentric rotating mass (ERM) motors. In some embodiments, one or more vibrators are linear resonant actuators (LRAs). For example, one or more vibrators are tactile vibration motors. In embodiments where one or more vibrators are embedded in the mounting base, the vibration axes of the one or more vibrators are preferably configured perpendicular to the surface of the mounting base. More preferably, if the mounting base is elastic or elastomeric, this helps ensure a good amplitude of motion perpendicular to the surface of the mounting base, for example, acting on the funnel placed on the mounting base.

[0088] In some embodiments, both the funnel and the mounting base are elongated in a plane substantially perpendicular to the axis of the funnel, for example, in a horizontal plane. For example, the funnel may be rhomboid rather than circular in the horizontal plane. This can increase the capacity of the funnel. In embodiments where the funnel is attached to a powder reservoir, the powder reservoir may also be elongated in the horizontal plane.

[0089] In some embodiments, the outlet of the funnel and the opening of the mounting base are off-center; wherein the mounting base includes an inclined portion toward the outlet; wherein at least one vibrator is disposed near the opening of the mounting base; and wherein at least one vibrator is disposed adjacent to the inclined portion of the mounting base. For example, one or more vibrators disposed adjacent to the inclined portion of the mounting base can assist the powder flow toward the outlet, particularly for powder that is far from the outlet and might otherwise stagnate. For example, the respective inclined portions of the funnel and the mounting base may be inclined away from the outlet / opening at an angle of about 10° relative to the horizontal plane.

[0090] In one set of embodiments, the powder dispenser of any of the foregoing aspects of the invention is connected to a weighing system within the powder dispenser. The weighing system includes a weighing sensor and a processor, the weighing sensor being configured to weigh a given dose of powder dispensed from the funnel, and the processor being configured to analyze the signal from the weighing sensor. For example, the processor may be programmed with a target weight. The processor may be configured to compare the weight of the dispensed dose of powder with the target weight. In such embodiments, the comparison result from the processor can be used to provide a feedback signal to the powder dispenser. When it is determined that the target weight has been reached, the feedback signal provided to the powder dispenser can simply control an actuator to seal the outlet or top of the funnel. This corresponds to zero flow rate. In other embodiments, based on the comparison result, the feedback signal provided to the powder dispenser can adjust the flow rate of powder from the powder dispenser to a suitable non-zero value, for example, by changing the degree of opening of the outlet or constriction. If the target weight is not reached quickly enough, the outlet or constriction can be opened more, or the outlet or constriction can be opened less as it approaches the target weight to slow the flow. This allows the weight of the full dose of dispensed powder to be as close as possible to the target weight, making the dispensed powder dose precise (e.g., within 1g of the target weight). In some examples, the outlet or constriction can be closed when the processor detects that the weight of the dispensed powder dose is close to the target weight, and then reopened to a smaller extent to dispense the final amount of powder at a reduced flow rate (e.g., gliding-in to the target weight).

[0091] In one set of embodiments, the actuator is controlled in response to a feedback signal. For example, the actuator may regulate the flow rate of powder dispensed through the outlet or constriction section, for example by adjusting the vertical position of the funnel and / or stopper, or by contracting and expanding the funnel as described above. The actuator may be controlled by its own processor, or it may be directly controlled by a processor performing a weight comparison.

[0092] This method is considered novel and inventive in itself; therefore, in another respect, the present invention provides an apparatus for dispensing and weighing powder, including a powder dispenser and a weighing system. The powder dispenser is configured to dispense a certain dose of powder through the outlet at an adjustable flow rate; The weighing system includes: A weighing sensor, configured to weigh the dose of powder already dispensed through the outlet; and A processor, programmed to have a target weight; The processor is configured to compare the weight of the dispensed powder with the target weight; and The comparison results from the processor are used to send a feedback signal to the powder dispenser to adjust the flow rate through the outlet.

[0093] In another respect, the present invention provides an apparatus for dispensing and weighing powder, including a powder dispenser and a weighing system; wherein the powder dispenser is configured to dispense a certain amount of powder through the constricted portion of the funnel at an adjustable flow rate according to the opening of the constriction section; The weighing system includes: A weighing sensor, configured to weigh the dose of powder already dispensed through the outlet; and A processor, programmed to have a target weight; The processor is configured to compare the weight of the dispensed powder with the target weight; and The comparison results from the processor are used to send a feedback signal to the powder dispenser to adjust the flow rate by changing the opening of the outlet.

[0094] More generally, from another perspective, the present invention provides an apparatus for dispensing and weighing powder, comprising a powder dispenser and a weighing system; wherein the powder dispenser is configured to dispense a dose of powder through the outlet at an adjustable flow rate according to the opening of the funnel outlet. The weighing system includes: A weighing sensor, configured to weigh the dose of powder already dispensed through the outlet; and A processor, programmed to have a target weight; The processor is configured to compare the weight of the dispensed powder with the target weight; and The comparison results from the processor are used to send a feedback signal to the powder dispenser to adjust the flow rate by changing the opening of the outlet.

[0095] As described above, the comparison results can indicate how quickly the weight of the dispensed powder approaches the target weight. If the dispensed weight is significantly below the target weight, the feedback signal can be used to increase the flow rate through the outlet. If the comparison results indicate a potential blockage preventing powder dispensing (e.g., due to no or almost no weight increase over a period of time), the feedback signal can be used to regulate the flow rate by closing and reopening the outlet or constriction. Once the dispensed weight reaches the target weight, the feedback signal can be used to immediately seal the outlet or top of the funnel once the desired dose has been dispensed.

[0096] In one set of embodiments, the powder dispenser is configured to reduce the flow rate of powder through the outlet in response to a feedback signal when the weight of the dispensed powder approaches a target weight. For example, an actuator may (directly or via a processor) move the funnel to different vertical positions or contract the funnel in response to the feedback signal to reduce the flow rate when the weight of the dispensed powder approaches the target weight.

[0097] In one set of embodiments, the powder dispenser further includes a vibrator configured to vibrate the funnel to assist powder flow toward the outlet (e.g., as described above). The processor can control the vibrator based on comparison results. For example, if the processor records that the weight of the dispensed powder is far from the target weight, it can increase the current supplied to the vibrator to increase powder agitation. In another example, the processor can record that the actuator has moved the funnel to a position where it is no longer in contact with the vibrator and can shut off the vibrator because it is no longer in contact with the outer surface of the funnel. In some embodiments, additionally or alternatively, the powder dispenser is configured to bring the outer surface of the funnel into contact with the vibrator (and vice versa) in response to a feedback signal. In some embodiments, the vibration frequency of the vibrator is changed to alter the flow rate of powder through the outlet. For example, a higher vibration frequency may be associated with a higher flow rate. In some embodiments, the vibration amplitude of the vibrator is changed to alter the flow rate of powder through the outlet. For example, a higher vibration amplitude may be associated with a higher flow rate.

[0098] The powder dispenser in the dispensing and weighing apparatus may include any features already described with respect to the first, second, or third aspects of the invention.

[0099] In some embodiments, the powder dispenser includes a funnel for dispensing a dose of powder through an outlet, and an actuator configured to selectively seal and unseal the outlet, wherein the outlet is defined by a boundary between an outer surface and an inner surface of the funnel. In other embodiments, the same actuator (or another actuator) may be configured to dispense a dose of powder through the outlet at an adjustable flow rate in response to a feedback signal. For example, as described in more detail above, the position of the funnel may be adjusted by the actuator to change the flow rate through the outlet in response to a feedback signal. In various embodiments, the actuator is configured to open the outlet to varying degrees to change the flow rate of powder through the outlet. In some embodiments, the processor is configured to automatically control the actuator using a feedback signal. In some embodiments, the feedback signal is sent to a different processor configured to control the actuator.

[0100] In some embodiments, the actuator is configured to adjust the position of the funnel from a first (e.g., upper) position to a second (e.g., lower) position in response to a feedback signal, wherein the outlet is sealed at one of the first and second positions, and wherein the outlet is unsealed at the other of the first and second positions. In some embodiments, the actuator is configured to adjust the vertical position of the funnel in response to a feedback signal to control the flow rate of powder through the outlet.

[0101] In some embodiments, one or more vibrators are configured to adjust the vibration speed of one or more vibrators (e.g., adjust the amplitude and / or frequency of the vibration) in response to a feedback signal to control the flow rate of powder through the outlet. For example, one or more vibrators may respond to the feedback signal (directly or via a processor) to reduce the vibration speed when the weight of the dispensed powder is close to a target weight.

[0102] In some embodiments, the powder dispenser further includes a stopper, wherein the outlet is sealed by the stopper when the funnel is in one of a first position and a second position.

[0103] In some embodiments, the powder dispenser includes a funnel, a vibrator, a stopper, and an actuator. The funnel is used to dispense a dose of powder through an outlet, wherein the funnel includes an upper portion and a lower portion, and a constriction portion disposed along an axis between the upper and lower portions. The vibrator is configured to vibrate at least the upper portion of the funnel to assist powder flow toward the constriction portion. The stopper is disposed in the constriction portion, wherein, in the funnel's natural state, the constriction portion contacts the stopper to seal the upper portion. The actuator is configured to move one of the lower and upper portions relative to the other along the axis, thereby opening the constriction portion relative to the stopper to allow powder to flow from the upper portion to the lower portion and toward the outlet. In other embodiments, the same actuator (or another actuator) may be configured to dispense a dose of powder through the constriction portion at an adjustable flow rate in response to a feedback signal. For example, as described in more detail above, the opening of the constriction portion of the funnel relative to the stopper may be adjusted by the actuator, for example, the funnel may be expanded by the actuator to change the flow rate through the constriction portion in response to a feedback signal. In various embodiments, the actuator is configured to open the contraction section to varying degrees to change the flow rate of powder through the outlet.

[0104] In some embodiments, the actuator is configured to move the funnel between a natural state and an expanded state in response to a feedback signal, wherein in the natural state, the upper portion of the funnel is sealed by a plug in contact with the contraction portion, and wherein in the expanded state, the upper portion is unsealed. In some embodiments, the actuator is configured to adjust the state of the funnel between the natural state and the expanded state (e.g., by moving the lower portion up and down) in response to a feedback signal to change the degree of opening of the contraction portion and control the flow rate of powder through the contraction portion.

[0105] In some embodiments, the funnel is made of an elastomeric material (e.g., a natural elastomer or a synthetic elastomer, such as a silicon-based material).

[0106] In one set of embodiments, the processor is configured to calibrate the weighing system using the tare weight of an empty vessel placed on it. This allows a user to place a vessel (e.g., a bottle) on the weighing system so that once the powder is dispensed, a mixture (e.g., infant formula) can be prepared directly without affecting the accuracy of the dispensed powder dosage.

[0107] In one set of embodiments, the processor is capable of recording when an empty vessel is placed on the weighing system. The processor can identify when the load cell reads zero and when the powder dispenser is off, thus recognizing that the vessel has been placed on the weighing system.

[0108] In any of the embodiments described herein, the powder dispenser or apparatus may include a user interface. The user interface may include any suitable input element (e.g., a touchscreen, one or more buttons, dials, etc.) enabling the user to input or select the desired dose of powder to be dispensed. The actuator may be configured to receive signals from the user interface such that the outlet is unsealed at the start of a dispensing cycle and sealed after the desired dose has been dispensed. For example, as described above, a processor may be used to automatically control the actuator during a dispensing cycle. Control of the actuator may be time-based and / or based on user input on the user interface, and / or based on feedback signals from a weighing system (including, in the case of, a weighing system).

[0109] According to another aspect of the invention, a computer-implemented method for dispensing and weighing powder is provided, wherein the processor is configured to: Receive weight readings from a weighing sensor, which is set to weigh the dose of powder being dispensed from the powder dispenser; Compare the weight reading with the target weight; Based on the comparison results, a feedback signal is generated that relates to the expected flow rate of powder being dispensed from the powder dispenser.

[0110] The target weight can be stored in accessible memory via a processor. The target weight can be pre-programmed, programmed by user input, or programmed based on the container detected by a weighing sensor.

[0111] As described above, the processor can be configured to send a feedback signal to the powder dispenser. The method can also include adjusting the flow rate through the outlet of the powder dispenser, for example, by controlling an actuator based on the feedback signal to open the outlet to varying degrees. The method can also include controlling the position of the dispensing funnel (e.g., relative to a fixed stopper for the outlet) in response to the feedback signal.

[0112] The method may also include adjusting the funnel of the powder dispenser from a natural state to an expanded state to open the constricted portion of the funnel to different degrees based on a feedback signal.

[0113] Another aspect of the invention relates to a computer program comprising instructions that, when executed by a processor, perform one or more of the methods described above.

[0114] Where appropriate, features of any aspect or embodiment described herein may be applied to any other aspect or embodiment described herein. When different embodiments or groups of embodiments are referred to, it should be understood that these embodiments are not necessarily different, but may overlap. Attached Figure Description

[0115] Some preferred embodiments of the invention will now be described by way of example only with reference to the accompanying drawings, wherein: Figure 1 A perspective view of an apparatus for dispensing and weighing powder is shown schematically. Figure 2 schematically shown Figure 1 A cross-sectional view of the apparatus shown; Figure 3a It schematically shows that in Figure 1 The enlarged perspective cross-sectional view of the powder dispenser used in the apparatus shown is shown; the powder dispenser is not in use at this time. Figure 3b schematically shown Figure 3a The diagram shows a perspective cross-sectional view of a powder dispenser in use. Figure 4a It schematically shows that in Figure 1 The diagram shows a cross-sectional view of the second powder dispenser used in the apparatus, which is not in use at this time. Figure 4b schematically shown Figure 4a A perspective cross-sectional view of the second powder dispenser shown; Figure 5a schematically shown Figure 4a The diagram shows a cross-sectional view of the second powder dispenser, which is in use at this time. Figure 5b schematically shown Figure 5a A perspective cross-sectional view of the second powder dispenser shown; Figure 6a Figure 4 schematically shows a bottom view of the actuator of the second powder dispenser when the powder dispenser is not in use; Figure 6b Figure 5 schematically shows a bottom view of the actuator of the second powder dispenser when the powder dispenser is not in use; Figure 7 A system for operating an apparatus for dispensing and weighing powder is schematically shown; Figure 8 It schematically shows that in Figure 1 The diagram shows a perspective view of the third powder dispenser used in the apparatus, which is not in use at this time. Figure 9 schematically shown Figure 8 The cross-sectional view of the third powder dispenser is shown below; Figure 10 schematically shown Figure 8 A bottom view of the mounting base for the third powder dispenser shown; Figure 11aIt schematically shows that in Figure 1 The diagram shows a perspective view of the fourth powder dispenser used in the apparatus, which is not in use at this time. Figure 11b schematically shown Figure 11a The cross-sectional view of the hopper and powder reservoir of the fourth powder dispenser is shown. Figure 12 A perspective view of a second apparatus for dispensing and weighing powder is shown schematically. Detailed Implementation

[0116] Figure 1 An apparatus 100 for dispensing powder is shown. The apparatus 100 includes a powder dispenser 104 and a weighing system 106. The powder dispenser 104 is located at the upper end of the apparatus housing 102, while the weighing system 106 is located at the lower end of the apparatus housing 102, directly below the powder dispenser 104.

[0117] Loose powder is placed into the upper container 105 of the powder dispenser 104, and the interior of the container 105 is accessed by opening the lid 108. A measured dose of powder is then dispensed from the container 105 via an outlet (not shown) onto the weighing tray 110 of the weighing system 106. A container (not shown) for receiving the powder, such as a baby bottle, may also be placed on the weighing tray 110.

[0118] Figure 2 It shows Figure 1 The diagram shows a cross-sectional view of an apparatus 100 for dispensing powder. The powder to be dispensed is stored in a container 105. A funnel 112 is fluidly connected to the container 105 such that powder entering the container 105 immediately enters the funnel 112; that is, the container 105 and the funnel 112 together serve as a powder reservoir. The funnel 112 has an outlet 116 that allows a measured dose of powder to flow out of the powder dispenser 104 and fall onto a weighing tray 110. The outlet 116 is defined by the boundary between the outer surface 113 and the inner surface 111 of the funnel.

[0119] Located inside funnel 112 is stopper 114. Stopper 114 is shown as selectively sealing outlet 116 of funnel 112. Figure 2 In the illustrated embodiment, the funnel 112 is connected to an actuator in the form of a servo motor 118, which is located within the appliance housing 102. The servo motor 118 is configured to raise and lower the funnel 112 relative to the stopper 114. The stopper 114 is fixedly attached to the container 104 and therefore does not move relative to the appliance housing 102.

[0120] When funnel 112 is in its upper position, such as Figure 2As shown, the stopper 114 blocks the outlet 116, sealing the container 105 at its lower end. No powder can leave the powder dispenser 104, and no air or moisture can enter the powder dispenser through the outlet 116. This helps prevent the powder from clumping or otherwise deteriorating.

[0121] The funnel 112 is located at its lower part (see below). Figure 3b When described, the stopper 114 will not block the outlet 116, and the powder can flow out from the outlet 116 of the funnel 112. The funnel 112 can be moved to any position between its upper and lower positions to adjust the flow rate of powder from the powder dispenser through the outlet 116.

[0122] The dispensed powder falls from outlet 116 and onto weighing tray 110 of weighing system 106. Weighing system 106 includes weighing tray 110 located on weighing sensor 126.

[0123] A weighing sensor 126 is connected to a processor 120. The processor 120 is also connected to a servo motor 118. The weighing sensor 126 records the weight of the dispensed powder (e.g., powder received in a bottle or other container (not shown) placed on a weighing tray) and sends this reading to the processor 120. The processor 120 is pre-programmed with a target weight (e.g., based on a user input or selected dosage) and compares it to the weight of the dispensed powder. For example, a user can input a desired powder weight or select a preset weight via a user interface 121 (e.g., in a baby formula dispenser, a user can input the baby's age / size).

[0124] Various containers can be placed on top of the weighing tray 110. The processor 120 is able to calibrate the load cell 126 to absolute zero by determining the tare weight of the container. For example, a user might be able to put the processor 120 into "calibration mode," where the user places a desired powder weight on the weighing tray 110, for example, by measuring a predetermined volume of powder on a spoon. The load cell 126 can record the desired powder weight, and the processor 120 can record this desired powder weight so that it can be automatically distributed in the future.

[0125] Based on a comparison of the weight of the dispensed powder, processor 120 then sends a feedback signal to servo motor 118 to move the funnel up or down. For example, if the weight of the dispensed powder is close to a target weight, processor 120 may send a feedback signal instructing servo motor 118 to move the funnel upward to slow the flow of dispensed powder through outlet 116, or to stop dispensing powder completely. For example, the feedback signal may instruct servo motor 118 to completely stop dispensing powder when the weight of the dispensed powder is close to the target weight, and subsequently instruct servo motor 118 to slightly unseal the outlet of the funnel, allowing a small amount of powder to be dispensed. This allows for finer control over the amount of powder dispensed close to the target weight. In another example, the feedback signal may instruct servo motor 118 to gradually seal the outlet of the funnel as the dispensed powder approaches the target weight, reducing the rate of powder dispensing.

[0126] In another example, if the weight of the dispensed powder is significantly lower than the target weight, the processor 120 can send a feedback signal instructing the servo motor 118 to move the funnel downwards to increase the flow rate of the dispensed powder through the outlet 116. The servo motor 118, processor 120, and weighing system 106 are powered via a power supply 122 (e.g., a battery and / or AC power connection).

[0127] Figure 3a It shows Figure 2 The diagram shows an enlarged cross-sectional perspective view of the powder dispenser 104, with the funnel 112 in the upper (i.e., closed) position. It can be seen that the outlet 116, defined by the boundary between the outer surface 113 and the inner surface 111 of the funnel, is sealed by the plug 114.

[0128] The powder dispenser 104 also includes a vibrator 128 (e.g., a motor) configured to contact the outer surface 113 of the funnel 112 when the funnel is in the lower position (i.e., dispensing powder) and not to contact the outer surface 113 of the funnel 112 when the funnel is in the upper position (i.e., sealed). The vibrator 128 is configured to vibrate the funnel to assist the powder in flowing toward the outlet 116 and to help break up any agglomerates in the powder.

[0129] The stopper 114 is cylindrical and extends continuously through the powder dispenser 105 and downwards along the centerline of the funnel 112. The stopper 114 is connected to the powder dispenser 105 at its upper end (i.e., distal end) via spokes 115. The stopper 114 tapers towards its lower end 132. The outer circumference of the lower end 132 of the stopper 114 is slightly larger than the inner circumference of the outlet 116 of the funnel 112. This interference fit ensures that the stopper 114 seals the outlet 116.

[0130] The funnel 112 is made of an elastomeric material. When the funnel 112 is in its upper position and the lower end 132 of the stopper 114 blocks the outlet 116 of the funnel 112, a seal 130 is formed between the lowest inner circumference of the funnel and the lower end 132 of the stopper 114. The seal 130 is achieved by the elastic deformation of the elastic funnel 112 to accommodate the stopper 114, resulting in compression between the stopper 114 and the funnel 112. When the powder dispenser 104 is not in use, the seal 130 prevents powder from leaking from the funnel 112 or prevents unwanted moisture from entering the funnel 112 through the outlet 116.

[0131] Figure 3b It shows Figure 3a The diagram shows a perspective cross-sectional view of the powder dispenser 104, with the funnel 112 in its lower (i.e., open) position. The funnel 112 has been moved downwards by the servo motor 118. In this position, the vibrator 128 contacts the outer surface 113 of the funnel 112. Because the funnel 112 is made of an elastomeric material, it can press against the vibrator 128 in this lower position for optimal contact between the vibrator 128 and the funnel 112, in order to transmit vibration through the funnel 112. This facilitates the powder flowing downwards through the funnel 112 and out through the outlet 116.

[0132] At funnel 112 located Figure 3b When in the lower (i.e., open) position as shown, the lower end 132 of the stopper 114 no longer seals the outlet 116, allowing powder to be dispensed under gravity. The funnel 112 can also be moved to... Figure 3a and Figure 3b A series of different vertical positions between the positions shown, or moving to a position greater than... Figure 3b The position shown is lower to change the powder flow rate through outlet 116. As the funnel 112 moves from... Figure 3a As the upper position decreases, the powder flow rate through outlet 116 continuously increases. This is because the stopper 114 protrudes less in the funnel 112.

[0133] exist Figure 1 In the embodiment shown in Figure 3, loose powder is placed into the upper container 105 of the powder dispenser 104 by opening the lid 108. Alternatively, the lid 108 is integrated with a stopper 114, such that the stopper 114 can be removed to allow access to the interior of the container 105. The stopper 114 may also be integrated with both the container 105 and the lid 108, with the funnel 112 being removable to allow loose powder to be placed directly into the funnel 112. The stopper 114 may also be removable from the container 105, for example, for cleaning.

[0134] Figure 4a and Figure 4b A schematic cross-sectional view of the second powder dispenser 204 is shown. The second powder dispenser 204 is Figure 1 The second powder dispenser 204 is an alternative to the dispenser 104 shown in Figure 3. It can be used with appliance 100, replacing... Figure 1 To the powder dispenser 104 shown in Figure 3.

[0135] The second powder dispenser includes an expandable funnel 236, such as Figure 4a As shown, it is in the natural (i.e., closed) state, meaning the powder dispenser is not in use. The expandable funnel 236 is fluidly connected to a container (not shown), allowing powder entering the container to flow into the expandable funnel 236; thus, the container and expandable funnel 236 together serve as a powder reservoir. The expandable funnel 236 has an outlet 243 that allows a measured dose of powder to flow out of the powder dispenser 204 and fall onto the appliance's weighing tray.

[0136] The expandable funnel 236 is hourglass-shaped, comprising a wide upper portion 237 and a wide lower portion 241, the upper portion 237 being configured to receive loose powder from a container (not shown). Between the upper portion 237 and the lower portion 241 of the funnel 236 is a constriction portion 240, which is the narrowest point of the expandable funnel 236. The upper portion 237, the lower portion 241, and the constriction portion 240 are configured such that they are concentric about an axis A, wherein the expandable funnel 236 extends parallel to the common axis A of the hourglass shape of the expandable funnel 236.

[0137] The upper part 237 of the expandable funnel 236 has a larger volume than the lower part 241, so that the upper part 237 can be used as a powder storage container.

[0138] A second stopper 238 is located within the expandable funnel 236. The second stopper 238 is shown as selectively sealing the contraction 240 of the expandable funnel 236. The second stopper 238 is attached to the appliance housing (not shown).

[0139] When the expandable funnel 236 is in its natural state, such as Figure 4a and Figure 4b As shown, the second stopper 238 blocks the contraction section 240, sealing the upper part 237 so that no powder can escape, and no air or moisture can enter the upper part 237 of the funnel through the outlet 243 or the contraction section 240, thereby preventing the powder from entering. This helps to prevent the powder from clumping or otherwise deteriorating.

[0140] The second stopper 238 is cylindrical and extends continuously through the second powder dispenser 204 and downwards along the centerline of the expandable funnel 236. The second stopper 238 is connected at its upper end (i.e., distal end) to the second cap 245 of the second powder dispenser 204 via spokes (not shown). The second stopper 238 may be tapered, such that it is narrower at its lower end 239 than at its upper end 235.

[0141] The second cover 245 is also configured to be attached to the upper part 237 of the expandable funnel 236, such that the upper part of the funnel remains open and can be more rigid than the lower part 241 of the funnel.

[0142] The contraction portion 240 of the expandable funnel 236 has the same inner diameter as the outer diameter of the lower end 239 of the second stopper 238, such that when the funnel is in its natural state, the contraction portion 240 is configured to form a seal around the second stopper 238, thereby sealing the upper portion 237.

[0143] When the expandable funnel 236 is in its expanded position (see reference) Figure 5a and Figure 5b (As described below), the second stopper 238 will not clog the contraction section 240, allowing powder to flow from the upper part 237 to the lower part 241, exiting from the contraction section 240, and thus exiting from the outlet 243 of the expandable funnel 236. The expandable funnel 236 can be adjusted between its expanded and unexpanded states to regulate the position of the contraction section 240 relative to the second stopper 238, thereby regulating the flow rate of powder from the second powder dispenser 204 through the outlet 243.

[0144] The expandable funnel 236 is made of an elastomeric material, allowing it to deform elastically. Figure 4a and Figure 4b The natural state shown and Figure 5a and Figure 5b The expansion position can be moved between the shown positions. This allows the contraction portion 240 of the expandable funnel 236 to move relative to the second stopper 238 to selectively seal and unseal the upper portion 237. The upper portion 237 of the funnel is reinforced by a rigid support element 233, which is embedded within the upper portion 237 to prevent the upper portion of the funnel from denting due to the weight of the powder when in the expanded or unconstrained state.

[0145] The hourglass shape of the expandable funnel 236 has the same axis A as the axis A of the second stopper 238. For example, the upper part 237, the lower part 241, and the constriction section can be considered as multiple concentric rings.

[0146] The second powder dispenser 204 also includes a vibrator 244 (e.g., a motor) configured to contact the outer surface of the expandable funnel 236. The vibrator 244 is configured to vibrate the funnel 236 to assist the powder flow toward the outlet 243 and to help break up any agglomerates in the powder. The vibrator 244 is shown in contact with the upper portion 237 of the expandable funnel 236, but the vibrator may also contact the lower portion 241 of the expandable funnel 236, for example, at the location of... Figure 5a and Figure 5bIn the extended position shown, the lower part 241 can be brought into contact with the vibrator. Because the expandable funnel 236 is made of an elastomeric material, it can press against the vibrator 244 for optimal contact between the vibrator 244 and the expandable funnel 236, in order to transmit vibrations through the expandable funnel 236. This facilitates the powder flowing downwards through the expandable funnel 236 and out through the outlet 243.

[0147] A rigid actuation ring 242 is attached to the lower portion 241 of the funnel, for example, at the outlet 243. The rigid actuation ring 242 is connected to an actuator (refer to Figure 6) configured to extend the funnel 236 from... Figure 4a and Figure 4b The natural state shown moves to Figure 5a and Figure 5b The open state is shown, causing the contraction section 240 to move downwards (e.g., along the center line of the expandable funnel 236). A set of grippers 249 are connected to the actuator. Figure 4b It is shown as retracted, i.e., not in contact with the rigid actuating ring 242.

[0148] Figure 5a and Figure 5b schematically shown Figure 4a and Figure 4b The diagram shows a cross-sectional view of the second powder dispenser 204, with the expandable funnel 236 in the open position, indicating that the powder dispenser is in use. The expandable funnel 236 has been moved downward by the rigid actuation ring 242 because the actuator's gripper 249 (refer to FIG. 6) has extended and moved radially inward to contact the rigid actuation ring 242, and the actuator has moved the gripper 249 downward, thus moving the rigid actuation ring 242 downward.

[0149] In the expandable funnel 236 Figure 5a and Figure 5b In the stretched state shown, the lower end 239 of the second stopper 238 no longer obstructs the contraction section 240, therefore the upper part 237 is no longer sealed, and the powder can be dispensed under gravity. The contraction section 240 can also be moved to a series of different vertical positions between those shown in Figures 4 and 5, or to a position greater than [the position shown in Figures 4 and 5], by expanding or contracting the funnel. Figure 5a and Figure 5b The position shown is lower to change the flow rate of powder through the contraction section 240 and the outlet 243. As the expandable funnel 236 expands from its natural state as shown in FIG. 4, the flow rate of powder through the outlet 243 continuously increases. This is because the second plug 238 protrudes less in the expandable funnel 236, for example, less in the contraction section 240 which has already moved downward.

[0150] In the embodiments shown in Figures 4 and 5, loose powder is placed into the upper portion 237 of the expandable funnel 236, for example, by opening the second cap 245. Alternatively, the second cap 245 is integrated with a second stopper 238, such that the second stopper 238 can be removed to allow access to the interior of the expandable funnel 236. The second stopper 238 may also be integrated with the appliance housing (not shown) and the cap 245, with the expandable funnel 236 being removable to allow loose powder to be placed directly into the expandable funnel 236.

[0151] Figure 6a The diagram shows a cross-section of the second powder dispenser 204 as viewed from below when the powder dispenser 204 is not in use, i.e., when the constriction section 240 is blocked by the second plug 238. A rigid actuation ring 242 is attached to the lower portion 241 of the funnel 236 and is configured not to contact the rotating mechanism 246 when the powder dispenser 204 is not in use. The rotating mechanism includes a set of grippers 249. Figure 6a The rotary mechanism is shown in the retracted position, meaning it is not in contact with the rigid ring 242. The rotary mechanism is connected to the actuator 248, which can be connected to a motor (not shown). The rotary mechanism 246 and the actuator 248 are located below the expandable funnel 236.

[0152] Figure 6b The image shows a cross-section of the second powder dispenser 204 as viewed from below when the second powder dispenser 204 is in use, i.e., when the constriction portion 240 is not blocked by the second plug 238.

[0153] To expand the expandable funnel 236, actuator 248 acts to move rotating mechanism 246, causing grippers 249 to rotate and extend, positioning them above rigid actuation ring 242. Actuator 248 then moves rotating mechanism 246 and rigid actuation ring 242 downwards (i.e., parallel to axis A of expandable funnel 236), causing grippers 249 to press downwards against rigid actuation ring 242 to stretch expandable funnel 236 and move contraction portion 240 downwards to unseal outlet 243. Actuator 248 also acts to retract grippers 249 of rotating mechanism 246 to release expandable funnel 236 and moves contraction portion 240 upwards to seal outlet 243 around second stopper 238 by allowing expandable funnel to elastically move back to its natural state. Expandable funnel 236 is elastic and will return to its natural (i.e., contracted) state if it were not elastically deformed by rotating mechanism 246. Actuator 248 rotates rotating mechanism 246 to disengage gripper 249 from rigid actuation ring 242. The actuator uses a ramp (not shown) to convert the rotational motion of rotating mechanism 246 into vertical linear motion of the rigid portion and lower part of the funnel. Actuator 248 rotates counterclockwise to rotate rotating mechanism 246, causing gripper 249 to extend and engage with rigid actuation ring 242, thus moving the funnel downwards.

[0154] Figure 7 The schematic diagram illustrates the operation. Figure 1 Control system 134 of appliance 100 in Figure 6.

[0155] The control system 134 includes a processor 120, a servo motor 118, a user interface 121, and vibrators 128 and 244. The system 134 may also include a load cell 126.

[0156] Processor 120 is configured to receive information from user interface 121, whereby the user inputs or selects a desired dosage (e.g., based on the volume or weight of the desired powder) or a preset category (e.g., where the user inputs the infant's age / size associated with the volume or weight of the infant formula). Processor 120 uses this information to set a target weight of powder to be dispensed.

[0157] The processor 120 sends signals to each of the vibrators 128, 244 and the servo motor 118 / actuator 248 based on input from the user interface 121 to actuate the movement of the funnel and / or stopper, thereby initiating powder dispensing when the funnel vibrates.

[0158] Processor 120 may optionally be configured to receive the weight of the dispensed powder from weighing sensor 126 and compare it with a pre-programmed target weight (e.g., selected by the user). Processor 120 is then configured to control servo motor 118 / actuator 248 to adjust the position of funnels 112, 234, thereby adjusting the flow rate of powder dispensed through outlet 116 or constriction 240, and / or adjusting the vibration of vibrators 128, 244.

[0159] If processor 120 is not configured to receive the weight of the dispensed powder from weighing sensor 126, processor 120 may instead control servo motor 118 / actuator 248 to move funnel 112 downward for a predetermined time to allow the desired dose to flow through outlet 116, or to expand funnel 236 downward for a predetermined time to allow the desired dose to flow through constriction 240. Processor 120 may additionally control vibrators 128, 244 to operate for a predetermined time to assist the flow of the desired dose.

[0160] Figure 8 A perspective view of a third powder dispenser 304 is schematically shown. The third powder dispenser 304 is... Figure 1 To the distributor 104 shown in Figure 3 and Figures 4a to 6b The second dispenser 204 shown is an alternative to the powder dispenser. The third powder dispenser 304 can be used with appliance 100, replacing... Figure 1 To the powder dispenser 104 shown in Figure 3. Figure 9 A cross-sectional view of the third powder dispenser 304 is schematically shown.

[0161] The third powder dispenser 304 includes a powder reservoir 350, a removable funnel 336, a removable stopper 338, and a mounting base 352. The mounting base 352 is fixed to the appliance, while the powder reservoir 350, removable funnel 336, and removable stopper 338 are removable. The powder reservoir 350 and removable funnel 336 are fluidly connected, and both can be filled with powder.

[0162] When assembling the powder dispenser 304, the upper part 337 of the removable funnel 336 is supported by the mounting base 352. The mounting base includes an opening 370 ( Figure 10 As shown in the figure, opening 370 allows powder to be discharged through the outlet of funnel 336. Mounting base 352 has the same shape as the upper part of funnel 336, including inclined portion 339, wherein the inclined portion slopes upward from opening 370.

[0163] The funnel 336 is attached to the mounting base 352 via a movable hinge (not shown), allowing the funnel to be removed from the mounting base. The powder reservoir 350 is attached to the funnel via a pair of clips 356, which can be opened to separate the powder reservoir 350 from the funnel 336.

[0164] Because the reservoir 350 is clamped to the funnel 336 and the stopper is contained within the funnel 336, the powder reservoir 350, funnel 336, and stopper 338 can be removed together from the powder dispenser. Upon removal from the powder dispenser 304, the stopper 338 seals the funnel 336, preventing powder leakage from the outlet of the funnel 336. The powder reservoir 350 can then be inverted, the funnel 336 and stopper 338 removed, and powder filled into the reservoir 350. The funnel 336 and stopper 338 are then placed on top of the powder reservoir 350, the clamp 356 is attached to the funnel 336, and the powder reservoir 350 is reoriented to be placed back into the powder dispenser 304.

[0165] Mounting base 352 is surrounded by a plurality of fasteners 353. These fasteners attach the mounting base to the appliance so that the user of the powder dispenser cannot remove the mounting base 352 when lifting the funnel 336 and the reservoir 350.

[0166] Actuator 355 is disposed below mounting base 352 and configured to receive funnel 336 when it is placed into powder dispenser. Protective ring 354 surrounds the opening of mounting base, which prevents user from touching actuator 355 when funnel 336 is removed from powder dispenser 304.

[0167] Removable funnel 336 Figure 9 The image shows its natural (i.e., closed) state, meaning the powder dispenser is not in use. The removable funnel 336 is fluidly connected to the powder reservoir 350, allowing powder entering the reservoir to flow into the funnel 336; thus, the reservoir and funnel together function as a powder storage container. The funnel 336 has an outlet 360 that allows a controlled amount of powder to flow out of the powder dispenser 304 and fall onto the weighing tray of the appliance.

[0168] The removable funnel 336 is hourglass-shaped, comprising a wide upper portion 337 and a wide lower portion 341. The upper portion 337 is configured to receive loose powder from the powder reservoir 350. Between the upper portion 337 and the lower portion 341 of the removable funnel 336 is a constriction portion 340, which is the narrowest point of the removable funnel 336. The upper portion 337, the lower portion 341, and the constriction portion 340 are configured such that they are concentric about an axis, wherein the removable funnel 336 extends parallel to the common axis of the hourglass shape of the removable funnel 336.

[0169] The upper part 337 of the removable funnel 336 has a larger volume than the lower part 341, so that the upper part 337 can be used as a powder storage container.

[0170] A second rigid actuation ring 342 is attached to the lower portion 341 of the funnel 336. The second rigid actuation ring 342 is connected to an actuator 355 (e.g., as shown with reference to FIG. 6), which is configured to move the removable funnel 336 from... Figure 9 The natural state shown (e.g., reference) Figure 4a and Figure 4b The expandable funnel 236 described in the text moves to the open state (e.g., refer to...). Figure 5a and Figure 5b (As described in the expandable funnel 236 shown) causes the contraction section 340 to move downward.

[0171] A removable stopper 338 is shown selectively sealing the constriction 340 of a removable funnel 336. The stopper 338 includes spokes 357 to allow the removable stopper 338 to rest above the funnel.

[0172] When the expandable funnel 336 is in its natural state, such as Figure 8 and Figure 9 As shown, the removable stopper 338 blocks the constriction section 340, so that the upper part 337 is sealed, and no powder can be discharged, nor can air or moisture enter the upper part 337 of the funnel through the outlet 360 or the constriction section 340, thereby allowing powder to enter.

[0173] The constriction portion 340 of the removable funnel 336 has the same inner diameter as the outer diameter of the lower end of the removable stopper 338, such that when the funnel is in its natural state, the constriction portion 340 is configured to form a seal around the removable stopper 338, thereby sealing the upper portion 337.

[0174] The removable stopper 338 includes a stepped portion 359 to prevent the constricted portion 340 from moving too far on the stopper when the stopper seals the upper part of the funnel.

[0175] When the removable funnel 336 is in its extended position (e.g., as referenced) Figure 5a and Figure 5b As illustrated in the expandable funnel 236, the removable stopper 338 does not clog the constriction section 340, allowing powder to flow from the upper part 337 to the lower part 341, exiting from the constriction section 340, and thus exiting from the outlet 343 of the removable funnel 336. The removable funnel 336 can be adjusted between its expanded and unconstrained states to regulate the position of the constriction section 340 relative to the removable stopper 338, thereby regulating the flow rate of powder from the third powder dispenser 304 through the outlet 360.

[0176] The removable funnel 336 is made of an elastomeric material, allowing the removable funnel to deform elastically. Figure 8 and Figure 9 The retractable funnel 336 can move between its natural state and its extended position. This allows the constricted portion 340 of the removable funnel 336 to move relative to the removable stopper 338 to selectively seal and unseal the upper portion 337.

[0177] A guide portion 358 is attached to the inside of the lower portion 341 of the removable funnel 336, such that the guide portion 358 is concentric with the lower portion 341. The guide portion 358 includes an inlet leading to a constriction portion 340 and an outlet 360 of the removable funnel 336. As powder is dispensed from the third powder dispenser 304, the powder exits from the upper portion 337 of the removable funnel 336 through the constriction portion 340 and then reaches the outlet 360 through the guide portion 358. The guide portion 358 conveys the powder downwards, causing it to exit substantially downwards from the powder dispenser 304. This prevents powder from scattering and falling onto the weighing tray of the appliance.

[0178] The mounting base includes a first vibrator 362, a second vibrator 364, a third vibrator 366, and a fourth vibrator 368 (vibrators are, for example, motors) attached to the lower side of the mounting base 352. Figure 10 As shown.

[0179] Vibrators 362, 364, 366, and 368 are configured to contact the outer surface of mounting base 352. Mounting base 352 contacts the outer surface of the expandable funnel; for example, the mounting base is molded to the same shape as the upper part of the funnel. The mounting base may be made of an elastomeric material, such that the vibrators are configured to vibrate the mounting base, thereby vibrating the funnel 336 to assist the powder in flowing toward the outlet 360 of the guide section and to help break up any agglomerates in the powder. When the actuator translates the lower part of the funnel to open the constriction section, the upper part of the funnel can be brought into better contact with mounting base 352, so that vibrations from vibrators 362, 364, 366, and 368 are better transmitted through mounting base 352 to the funnel to assist powder flow.

[0180] The first vibrator 362, the second vibrator 364, and the third vibrator 366 are configured to surround the opening 370 of the mounting base 352. The first vibrator 362, the second vibrator 364, and the third vibrator 366 are spaced apart at a relative distance of 90° around the opening 370. The first vibrator 362, the second vibrator 364, and the third vibrator 366 promote powder flow through the contraction section 340 of the funnel by vibrating the area of ​​the mounting base 352 that is in contact with the upper part 337 of the funnel 336 closest to the contraction section 340.

[0181] The fourth vibrator 368 is located at the end of the mounting base 352 opposite to the opening 370, below the inclined portion 339 of the mounting base 352. The fourth vibrator 368 causes the powder to flow along the upper part of the funnel 336 toward the contraction portion 340.

[0182] The first vibrator 362, the second vibrator 364, the third vibrator 366, and the fourth vibrator 368 are configured with vibration axes perpendicular to the surface of the mounting base 352 and therefore perpendicular to the surface of the funnel 336. This allows vibration to be better transmitted to the powder through the mounting base 352 and the funnel 336, thereby better promoting powder flow and breaking up powder agglomerates.

[0183] Mounting base 352 also includes sensor 372. Sensor 372 detects the presence of the funnel; for example, sensor 372 is a proximity sensor. This information can be transmitted to a processor within the appliance. For example, if sensor 372 does not detect the funnel, such as if the funnel is not properly positioned within the powder dispenser, the appliance may not dispense any powder (e.g., the actuator may not operate).

[0184] Figure 11a and Figure 11b A fourth powder dispenser 404 is shown, including a second powder reservoir 450 with a molded stopper 474. The second powder reservoir 450 with the molded stopper 474 can be used in place of the removable stopper 338 and the powder reservoir 350 in the third powder dispenser 304.

[0185] The second powder reservoir 450 is clamped to the funnel 436 such that when the second powder reservoir 450 is removed from the fourth powder dispenser 404, the molded stopper 474 and the funnel 436 are removed simultaneously. The powder reservoir can then be flipped over and the funnel 436 removed to fill the powder reservoir without removing an additional stopper. The molded stopper 474 also includes a stepped portion 476.

[0186] Reference Figures 1 to 1 The powder dispenser described in any of the figures in Figure 1 can be used Figure 12 The second appliance 500 is shown. The second appliance 500 includes a powder dispenser and a water dispenser. The powder dispenser includes a powder reservoir 550, and the water dispenser includes a water reservoir 580. For example, the water dispenser dispenses hot water for making beverages, such as infant formula using infant formula dispensed from the powder dispenser. The powder dispenser and water dispenser are controlled using a control panel 582. Below the powder dispenser is a powder weighing tray 584, and below the water dispenser is a water weighing tray 586. The powder weighing tray 584 weighs the dispensed powder, and the water weighing tray 586 weighs the dispensed water, allowing for the dispensing of precise doses of powder and water.

[0187] Those skilled in the art will understand that the invention has been described by way of one or more specific embodiments, but is not limited to these embodiments; many variations and modifications may be made within the scope of the appended claims.

Claims

1. A powder dispenser, comprising: A funnel for dispensing a dose of powder through an outlet, wherein the funnel includes an upper part and a lower part, and a constriction section arranged along an axis between the upper part and the lower part; A vibrator configured to vibrate at least the upper part of the funnel to assist the powder in flowing toward the contraction section; A stopper is disposed in the constricted portion, wherein, in the natural state of the funnel, the constricted portion contacts the stopper to seal and isolate the upper part; and An actuator configured to move one of the lower and upper portions relative to the other along the axis, thereby opening the constriction relative to the plug to allow powder to flow from the upper portion to the lower portion and toward the outlet.

2. The powder dispenser of claim 1, wherein the actuator is configured to open the constriction section to varying degrees to change the flow rate of powder through the outlet.

3. The powder dispenser according to claim 1 or 2 further includes a processor configured to automatically control the actuator.

4. The powder dispenser according to any of the preceding claims, wherein the upper and lower portions are truncated conical, for example, the funnel is hourglass shaped.

5. The powder dispenser according to any of the preceding claims, wherein the upper portion comprises a larger volume than the lower portion.

6. The powder dispenser according to any of the preceding claims, wherein the stopper comprises a cylinder and the constriction seals around the stopper in an azimuthal manner.

7. The powder dispenser according to any of the preceding claims, wherein the stopper is tapered.

8. The powder dispenser according to any of the preceding claims, wherein the plug has an outer diameter substantially the same as the width of the contraction portion in the funnel in its natural state.

9. The powder dispenser according to any of the preceding claims, wherein the funnel is brought into contact with the vibrator when the actuator opens the contraction section.

10. The powder dispenser according to any of the preceding claims, wherein the funnel is made of an elastomeric material.

11. The powder dispenser according to any of the preceding claims, wherein the actuator is configured to elastically deform the funnel to open the constriction relative to the stopper.

12. The powder dispenser according to any of the preceding claims, wherein the upper part, the lower part, and the constriction part comprise a plurality of concentric rings.

13. The powder dispenser according to any of the preceding claims, wherein the funnel is removable.

14. The powder dispenser according to any of the preceding claims, wherein the stopper is removable.

15. The powder dispenser according to any of the preceding claims, wherein the upper portion of the funnel is reinforced relative to the lower portion.

16. The powder dispenser according to any of the preceding claims further includes a rigid element attached to the lower portion of the funnel.

17. The powder dispenser of claim 16, wherein the actuator pulls the rigid element downward to move the lower portion relative to the upper portion, thereby opening the constriction relative to the plug.

18. The powder dispenser according to any of the preceding claims, wherein the lower portion of the funnel includes an outer portion and a guide portion; in, The guide portion is narrower than the outer portion; The guide portion includes an inlet leading to the contraction portion and an outlet of the funnel; and The guide portion is configured to restrict the flow of powder toward the outlet of the funnel, making it substantially parallel to the axis of the funnel.

19. An apparatus for dispensing and weighing powder, comprising a powder dispenser and a weighing system according to any of the preceding claims; The powder dispenser is configured to dispense a certain dose of powder through the outlet of the funnel at an adjustable flow rate according to the opening of the contraction section. The weighing system mentioned above includes: A weighing sensor, configured to weigh the dose of powder already dispensed through the outlet; and A processor, programmed to have a target weight; The processor is configured to compare the weight of the dispensed powder with the target weight; and The comparison result from the processor is used to send a feedback signal to the powder dispenser to adjust the flow rate by changing the opening of the contraction section.

20. The apparatus of claim 19, wherein the vibrator is configured to adjust the vibration speed in response to the feedback signal.

21. The apparatus of claim 19 or 20, wherein the powder dispenser is configured to reduce the flow rate of powder through the outlet in response to the feedback signal when the weight of the dispensed powder approaches the target weight.

22. The apparatus according to any one of claims 19 to 21, wherein the powder dispenser is configured to dispense the given dose of powder at an adjustable flow rate through the outlet in response to the feedback signal.

23. The apparatus according to any one of claims 19 to 22, wherein the actuator is configured to adjust the funnel between a natural state and an extended state in response to the feedback signal.

24. The apparatus according to any one of claims 19 to 23, wherein the processor is configured to calibrate the weighing system using the tare weight of an empty vessel placed on the weighing system.

25. The apparatus according to any one of claims 19 to 24, wherein the processor is capable of recording when an empty vessel is placed on the weighing system.

26. The appliance according to any one of claims 19 to 25, comprising a user interface.

27. A powder dispenser, comprising: Powder storage container; A funnel for dispensing a dose of powder from the powder reservoir through an outlet, wherein the funnel is configured to be in fluid communication with the powder reservoir; Mounting base configured to receive the funnel thereon, wherein the mounting base includes an opening configured to align with the outlet of the funnel; One or more vibrators configured to contact the mounting base, wherein the vibrators are configured to vibrate the outer surfaces of the mounting base and the funnel to assist the powder to flow toward the outlet; The funnel and the powder reservoir are removable from the powder dispenser; The funnel is configured to be removable from the powder reservoir to allow the powder reservoir to be filled with powder.

28. The powder dispenser of claim 27, wherein one of the powder reservoir and the funnel includes an attachment means for removably attaching to the other of the powder reservoir and the funnel.

29. The powder dispenser of claim 27 or 28, wherein the mounting base includes one or more movable hinges configured to attach the funnel to the mounting base.

30. The powder dispenser according to any one of claims 27 to 29, further comprising a stopper, wherein the stopper is configured to selectively seal and unseal the outlet of the funnel.

31. The powder dispenser of claim 30, wherein the stopper is removable.

32. The powder dispenser according to claim 30 or 31, wherein the stopper is contained in the powder reservoir.

33. The powder dispenser according to any one of claims 30 to 32, wherein the plug is configured to seal the funnel when the powder reservoir and the funnel are removed together from the powder dispenser.

34. The powder dispenser according to any of the preceding claims, comprising an actuator configured to selectively seal and unseal the outlet of the funnel.

35. The powder dispenser of claim 34, wherein the actuator is configured to move the funnel relative to the stopper, thereby opening the outlet relative to the stopper to allow powder to flow through the outlet.

36. The powder dispenser according to any one of claims 27 to 35, wherein the mounting base is made of an elastomeric material.

37. The powder dispenser according to any one of claims 27 to 36, wherein one or more vibrators are configured adjacent to the opening of the mounting base.

38. The powder dispenser according to claim 37, wherein, The vibrators are evenly spaced around the opening of the mounting base.

39. The powder dispenser according to any one of claims 27 to 38, wherein the funnel and the mounting base are both elongated in a plane substantially perpendicular to the axis of the funnel, wherein the outlet of the funnel and the opening of the mounting base are off-center; in, The mounting base includes an inclined portion facing the outlet; At least one vibrator is disposed near the opening in the mounting base; and At least one vibrator is configured as an inclined portion adjacent to the mounting base.

40. The powder dispenser according to any one of claims 27 to 39, wherein the funnel comprises an upper portion and a lower portion, and a constricted portion arranged along an axis between the upper portion and the lower portion; in, The mounting base is configured to support the upper part of the funnel, wherein the opening of the mounting base is configured to surround the constricted portion, and the lower part of the funnel is located below the mounting base; and The powder dispenser includes an actuator configured to move the lower portion relative to the upper portion along the axis, thereby opening the constriction section to allow powder to flow from the upper portion to the lower portion and toward the outlet.

41. The powder dispenser of claim 40, wherein the lower portion of the funnel comprises an outer portion and a guide portion; in, The guide portion is narrower than the outer portion; The guide portion includes an inlet leading to the contraction portion and an outlet of the funnel; and The guide portion is configured to restrict the flow of powder toward the outlet of the funnel, making it substantially parallel to the axis of the funnel.

42. The powder dispenser according to any of the preceding claims, wherein, The vibration speed of the vibrator is changed to alter the flow rate of the powder through the outlet.

43. The powder dispenser according to any of the preceding claims, wherein, The vibration axis of the vibrator is set to be perpendicular to the contact surface of the funnel.

44. An apparatus for dispensing and weighing powder, comprising a powder dispenser and a weighing system according to any one of claims 27 to 43; The powder dispenser is configured to dispense a certain dose of powder through the outlet at an adjustable flow rate according to the opening of the funnel outlet. The weighing system mentioned above includes: A weighing sensor, configured to weigh the dose of powder already dispensed through the outlet; and A processor, programmed to have a target weight; The processor is configured to compare the weight of the dispensed powder with the target weight; and The comparison result from the processor is used to send a feedback signal to the powder dispenser to adjust the flow rate through the outlet by changing the opening of the outlet.

45. The apparatus of claim 44, wherein the vibrator is configured to adjust the vibration speed of the vibrator in response to the feedback signal.

46. ​​The apparatus of claim 44 or 45, wherein the powder dispenser is configured to reduce the flow rate of powder through the outlet in response to the feedback signal when the weight of the dispensed powder approaches the target weight.

47. The apparatus according to any one of claims 44 to 46, comprising an actuator configured to change the opening degree of the outlet in response to the feedback signal.

48. The apparatus of claim 47, wherein the actuator is configured to dispense the dose of powder at an adjustable flow rate through the outlet in response to the feedback signal.

49. The appliance according to claim 47 or 48, wherein, The actuator is configured to adjust the position of the funnel from a first position to a second position in response to the feedback signal, wherein the outlet is sealed at one of the first and second positions, and wherein the outlet is unsealed at the other of the first and second positions.

50. The apparatus of claim 49, wherein the powder dispenser further comprises a stopper, wherein the outlet is sealed by the stopper when the funnel is in one of the first and second positions.

51. The apparatus according to any one of claims 44 to 46, wherein the funnel comprises an upper portion and a lower portion, and a constriction portion arranged along an axis between the upper portion and the lower portion; and an actuator configured to move the lower portion relative to the upper portion along the axis to open the constriction portion to allow powder to flow from the upper portion to the lower portion and toward the outlet; The powder dispenser is configured to change the opening degree of the contraction section in response to the feedback signal.

52. The apparatus of claim 51, wherein the actuator is configured to dispense the powder at an adjustable flow rate through the contraction portion in response to the feedback signal.

53. The appliance according to claim 51 or 52, wherein, The actuator is configured to adjust the state of the funnel between a natural state and an expanded state in response to the feedback signal, thereby changing the degree of opening of the contraction section and controlling the flow rate of powder through the contraction section.

54. The apparatus according to any one of claims 44 to 53, wherein the processor is configured to calibrate the weighing system using the tare weight of an empty vessel placed on the weighing system.

55. The apparatus according to any one of claims 44 to 54, wherein the processor is capable of recording when an empty vessel is placed on the weighing system.

56. The appliance according to any one of claims 44 to 55, comprising a user interface.

57. An apparatus for dispensing and weighing powder, comprising a powder dispenser and a weighing system; wherein the powder dispenser is configured to dispense a dose of powder through the outlet at an adjustable flow rate according to the opening of the funnel outlet. The weighing system mentioned above includes: A weighing sensor, configured to weigh the dose of powder already dispensed through the outlet; and A processor, programmed to have a target weight; The processor is configured to compare the weight of the dispensed powder with the target weight; and The comparison result from the processor is used to send a feedback signal to the powder dispenser to adjust the flow rate by changing the opening of the outlet.

58. The apparatus of claim 57, wherein the powder dispenser comprises one or more vibrators configured to vibrate the outer surface of the funnel to assist powder flow toward the outlet.

59. The apparatus of claim 58, wherein the vibrator is configured to adjust the vibration speed of the vibrator in response to the feedback signal.

60. The apparatus according to any one of claims 57 to 59, wherein the powder dispenser is configured to reduce the flow rate of powder through the outlet in response to the feedback signal when the weight of the dispensed powder approaches the target weight.

61. The apparatus according to any one of claims 57 to 60, comprising an actuator configured to change the opening degree of the outlet in response to the feedback signal.

62. The apparatus of claim 61, wherein the actuator is configured to dispense the dose of powder at an adjustable flow rate through the outlet in response to the feedback signal.

63. The appliance according to claim 61 or 62, wherein, The actuator is configured to adjust the position of the funnel from a first position to a second position in response to the feedback signal, wherein the outlet is sealed at one of the first and second positions, and wherein the outlet is unsealed at the other of the first and second positions.

64. The apparatus of claim 63, wherein the powder dispenser further comprises a stopper, wherein the outlet is sealed by the stopper when the funnel is in one of the first and second positions.

65. The apparatus according to any one of claims 57 to 60, wherein the funnel comprises an upper portion and a lower portion, and a constriction portion arranged along an axis between the upper portion and the lower portion; and an actuator configured to move the lower portion relative to the upper portion along the axis to open the constriction portion to allow powder to flow from the upper portion to the lower portion and toward the outlet; The powder dispenser is configured to change the opening degree of the contraction section in response to the feedback signal.

66. The apparatus of claim 65, wherein the actuator is configured to dispense the dose of powder through the contraction portion at an adjustable flow rate in response to the feedback signal.

67. The apparatus of claim 65 or 66, wherein the actuator is configured to adjust the state of the funnel between a natural state and an expanded state in response to the feedback signal, thereby changing the degree of opening of the contraction and controlling the flow rate of powder through the contraction.

68. The apparatus according to any one of claims 57 to 67, wherein the processor is configured to calibrate the weighing system using the tare weight of an empty vessel placed on the weighing system.

69. The apparatus according to any one of claims 57 to 68, wherein the processor is capable of recording when an empty vessel is placed on the weighing system.

70. The appliance according to any one of claims 57 to 69, comprising a user interface.

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