US-12624893-B2 - Drying apparatus

US12624893B2US 12624893 B2US12624893 B2US 12624893B2US-12624893-B2

Abstract

A drying apparatus can include a wet end portion, a dry end portion, and a drying chamber. The wet end portion can include a spray apparatus configured to apply a product puree to a belt, and the dry end portion can include a knife portion configured to remove a dry product from the belt. The drying chamber can extend between the wet end portion and the dry end portion and can include one or more table sections. Each table section can include a basin portion and one or more temperature control elements. The drying chamber can further include an air inlet and an air outlet such that air can flow through the drying chamber in a direction opposite a direction of the belt.

Inventors

Gregory Newman
Tom Valenzuela
John Lowell Bowers
Jared Estrada

Assignees

OREGON DRYTECH, LLC

Dates

Publication Date: 20260512
Application Date: 20220218

Claims (20)

1 . A drying apparatus, comprising: a wet end portion comprising a spray apparatus configured to apply a wet product to a belt; a dry end portion comprising a knife portion configured to remove a dry product from the belt; a drying chamber extending between the wet end portion and the dry end portion and comprising one or more table sections, each table section comprising a basin portion and one or more temperature control elements, the drying chamber further comprising an air inlet and an air outlet such that air can flow through the drying chamber in a direction opposite a direction of the belt; wherein the spray apparatus is an elongated member comprising a plurality of openings disposed along a length of the elongated member, the openings extending through a wall of the elongated member and being oriented toward the belt; and wherein the openings taper from a first diameter at an inner surface of the elongated member to a second diameter at an outer surface of the elongated member.
2 . The drying apparatus of claim 1 , wherein the wet end portion further comprises a first roller spaced apart from a second roller along a first axis, and wherein the belt is configured to extend over the first roller and beneath the second roller.
3 . The drying apparatus of claim 2 , wherein the first roller is offset from the second roller along a second axis such that a portion of the belt disposed between the first and second rollers is angled relative to the spray apparatus.
4 . The drying apparatus of claim 1 , wherein the spray apparatus is pivotable relative to the belt.
5 . The drying apparatus of claim 1 , wherein the elongated member is a first elongated member comprising a first plurality of openings and the spray apparatus further comprises a second elongated member disposed within an inner bore of the first elongated member.
6 . The drying apparatus of claim 5 , wherein the second elongated member comprises a second plurality of openings disposed along a length of the second elongated member and oriented in a direction opposite the first plurality of openings of the first elongated member.
7 . The drying apparatus of claim 1 , wherein the drying chamber further comprises one or more baffles configured to create turbulent airflow within the drying chamber.
8 . The drying apparatus of claim 1 , wherein each table section further comprises a holding tank into which the temperature control elements at least partially extend, and wherein the temperature control elements are configured adjust the temperature of a fluid disposed within the holding tank until the fluid reaches a selected temperature.
9 . The drying apparatus of claim 8 , wherein each table section further comprises a diffuser bar configured to allow fluid from the holding tank to be pumped into the basin portion.
10 . The drying apparatus of claim 1 , wherein the temperature control elements are electrically powered.
11 . The drying apparatus of claim 1 , wherein the temperature control elements are powered using one or more solar panels.
12 . The drying apparatus of claim 1 , the dry end portion further comprising a bullnose portion, wherein the bullnose portion is positioned at an angle relative to the knife portion such that when the belt passes between the bullnose portion and the knife portion, the belt forms a Z-bend.
13 . The drying apparatus of claim 1 , the dry end portion further comprising a top roller and a drive roller, wherein the drive roller is configured to drive the belt through the drying apparatus.
14 . The drying apparatus of claim 13 , wherein a leading edge of the top roller is offset from a leading edge of the drive roller along a second axis such that a portion of the belt disposed between the two rollers is angled relative to the knife portion.
15 . The drying apparatus of claim 13 , wherein the top roller comprises a chilled roller.
16 . The drying apparatus of claim 1 , further comprising a brush device configured to selectively remove remaining dry product from the belt.
17 . The drying apparatus of claim 16 , wherein the brush device comprises a brush portion, a first brush roller, and a second brush roller, and wherein the brush device is pivotable between an engaged position, in which the brush portion contacts the belt, and a disengaged position in which the brush portion does not contact the belt.
18 . The drying apparatus of claim 1 , wherein the drying apparatus is disposed within an environmental control room configured to allow an operator to adjust the humidity within the environmental control room.
19 . The drying apparatus of claim 1 , wherein one or more table sections are angled table sections comprising first and second side walls each having at least one angled portion such that a first opening disposed at a first end portion of the angled table section has a width narrower than a width of a second opening disposed at a second end portion of the angled table section.
20 . A method of using the drying apparatus of claim 1 , the method comprising: spraying the wet product onto the belt using the spray apparatus; driving the belt in a first direction such that the wet product moves into the drying chamber; flowing air along the belt in a second direction opposite the first direction to remove water from the wet product to create the dry product; driving the belt through a Z-bend to remove the dry product from the belt.

Description

CROSS REFERENCE TO RELATED APPLICATIONS This application is a Continuation-in-part of Patent Cooperation Treaty Application Serial No. PCT/US2021/025920, entitled DRYING APPARATUS, filed Apr. 6, 2020, and also claims the benefit of U.S. Provisional Application Ser. No. 63/007,099, entitled DRYING APPARATUS, filed on Apr. 8, 2020, which applications are incorporated by reference herein in their entirety. FIELD The present disclosure relates to embodiments of a heat transfer apparatus and method for drying substances, such as food substances. BACKGROUND Conventional drying processes such as spray drying, freeze drying, and drum drying can be used to dehydrate products for sale or storage. However, such drying processes can degrade the nutritional value, color, and flavor of the processed products, can render the products unlikely to remain viable for long periods of storage, and/or can be expensive to utilize from both a product throughput and energy efficiency perspective. Accordingly, a need exists for improved drying apparatuses. SUMMARY Described herein are embodiments of an improved drying apparatus, as well as methods for using such an apparatus. In a representative embodiment, a drying apparatus can comprise a wet end portion, a dry end portion, and a drying chamber. The wet end portion comprising a spray apparatus configured to apply a product puree to a belt and the dry end portion comprising a knife portion configured to remove a dry product from the belt. The drying chamber extending between the wet end portion and the dry end portion and comprising one or more table sections, each table section comprising a basin portion and one or more temperature control elements, the drying chamber comprising an air inlet and an air outlet such that air can flow through the chamber in a direction opposite a direction of the belt. In some or all embodiments, the wet end portion comprises a first roller spaced apart from a second roller along a first axis, and wherein the belt is configured to extend over the first roller and beneath the second roller. In some or all embodiments, the first roller is offset from the second roller along a second axis such that a portion of the belt disposed between the first and second rollers is angled relative to the spray apparatus. In some or all embodiments, the spray apparatus is pivotable relative to the belt. In some or all embodiments, the spray apparatus is an elongated bar or member comprising a plurality of openings disposed along a length of the bar, the openings extending through a wall of the bar. In some or all such embodiments, the openings taper from a first diameter at an inner surface of the bar to a second diameter at an outer surface of the bar. In some or all embodiments, the drying chamber comprises one or more baffles configured to create turbulent airflow within the drying chamber. In some or all embodiments, each table section further comprises a holding tank into which the temperature control elements at least partially extend, and wherein the temperature control elements are configured adjust the temperature of a fluid disposed within the holding tank until the fluid reaches a selected temperature. In some or all such embodiments, each table section comprises a diffuser bar configured to allow fluid from the holding tank to be pumped into the basin portion. In some or all embodiments, the temperature control elements are electrically powered. In some or all embodiments, the temperature control elements are powered using one or more solar panels. In some or all embodiments, the dry end portion further comprising a bullnose portion, wherein the bullnose portion is positioned at an angle relative to the knife portion such that when the belt passes between the bullnose portion and the knife portion the belt forms a Z-bend. In some or all embodiments, the dry end portion further comprising a top roller and a drive roller, wherein the drive roller is configured to drive the belt through the drying apparatus. In some or all such embodiments, a leading edge of the top roller is offset from a leading edge of the drive roller along a second axis such that a portion of the belt disposed between the two rollers is angled relative to the knife portion. In some or all embodiments, the drying apparatus further comprises a brush device configured to selectively remove remaining dry product from the belt. In some or all such embodiments, the brush device comprises a brush portion, a first brush roller, and a second brush roller, and wherein the brush device is pivotable between an engaged position, in which the brush portion contacts the belt, and a disengaged position in which the brush portion does not contact the belt. In some or all embodiments, the drying apparatus is disposed within an environmental control room configured to allow an operator to adjust the humidity within the environmental control room. In a representative embodiment, a method comprises spraying