Thawing oven

• US 9,173,248 B2
• Filed: 03/14/2011
• Issued: 10/27/2015
• Est. Priority Date: 03/14/2011
• Status: Active Grant

• Current Assignee: Scott Products
• Original Assignee: Products Support Incorporated
• Inventors: Baker, Rodney Warren
• Primary Examiner(s): Hoang, Tu B
• Assistant Examiner(s): HOANG, MICHAEL G
• Application Number:
  US13/047,183
• Publication Number:
  US 20120234817A1
• Time in Patent Office: 1,688 Days
• Field of Search: 422/1, 422/44, 422/46, 422/82.05, 422/307, 422/292, 422294-297, 422300-302, 219/209, 219710-712, 219/385, 219/405, 219/411, 219/413, 219/390, 374/149, 374/120, 374/121, 604/114
• US Class Current: 1/1
• CPC Class Codes: F24C 7/043 Stoves
• CPC Class Codes: F24C 7/081 on stoves
• CPC Class Codes: F27B 17/02 specially designed for laboratory use
• CPC Class Codes: F27D 2019/0003 Monitoring the temperature or a characteristic of the charge and using it as a controlling value
• CPC Class Codes: H05B 1/025 For medical applications

Abstract

An apparatus and method for thawing a product. The apparatus includes a heating chamber, and an electrical control unit. The heating chamber includes a product chamber that holds a product, at least one heating element, each heating element emitting infrared energy in a direction of the product, and at least one temperature sensor, each temperature sensor measuring a surface temperature of the product. The electrical control unit includes a processor that controls and monitors said at least one heating element, and said at least one temperature sensor to raise a temperature of the product from an initial temperature to a set-point temperature, a connection to each heating element, and a connection to each temperature sensor.

Claims

1. An apparatus, comprising:

a heating chamber, comprising;

a product chamber that holds a sealed pouch that stores a product, wherein the product chamber includes a locating pin;

at least one heating element, each heating element emitting infrared energy in a direction of the product, wherein said at least one heating element is located outside the product chamber;

at least one temperature sensor, each temperature sensor measuring a surface temperature of the product, wherein said at least one temperature sensor is located outside the product chamber; and

a product chamber detection sensor located outside the product chamber; and

an electrical control unit, comprising;

a processor that controls and monitors said at least one heating element, and said at least one temperature sensor to raise a temperature of the product from an initial temperature to a set-point temperature;

a connection to each heating element;

a connection to each temperature sensor;

a connection to the product chamber detection sensor; and

a connection to the locating pin,

wherein the processor monitors the product chamber detection sensor and the locating pin to determine whether the product is present in the product chamber, and whether the product chamber is properly seated in the heating chamber.

2. The apparatus of claim 1, wherein the product is at least one of a medical product, a biomedical product, and a pharmaceutical product.

3. The apparatus of claim 2, wherein the product is at least one of plasma, Fresh Frozen Plasma, and blood.

4. The apparatus of claim 1, wherein the product chamber is a vessel having a flat bottom surface, a cylindrical side wall, and an open top.

5. The apparatus of claim 4, wherein the open top of the cylindrical side wall of the product chamber receives a clamp that holds the sealed pouch that stores the product and suspends the sealed pouch that stores the product within the product chamber to avoid contact between the sealed pouch that stores the product and the product chamber.

6. The apparatus of claim 4, wherein the vessel is an acrylic vessel that filters the infrared energy from said at least one heating element, thereby allowing passage of a desired range of wavelengths, and preventing passage of an undesired range of wavelengths.

7. The apparatus of claim 1, wherein each heating element emits mid-infrared energy.

8. The apparatus of claim 1, wherein each heating element has an emitting surface that is flat, thereby allowing a uniform pattern of the infrared energy in the direction of the product.

9. The apparatus of claim 1, wherein each heating element has an emitting surface that is concave, thereby allowing a concentrated pattern of the infrared energy in the direction of the product.

10. The apparatus of claim 1, wherein each temperature sensor emits an infrared beam to measure the surface temperature of the product.

11. The apparatus of claim 1, wherein said at least one heating element is positioned around the product chamber to maximize the exposure of the infrared energy on the product, and wherein said at least one temperature sensor is positioned around the product chamber to maximize accuracy of the measurement of the surface temperature of the product.

12. The apparatus of claim 1, wherein the heating chamber further comprises:

a chamber door, comprising;

a hinge assembly; and

a latch; and

a chamber door support, comprising;

an opening that receives the product chamber;

an opening that receives the latch in the chamber door; and

a closed door sensor; and

wherein the hinge assembly mounts the chamber door on the chamber door support,

wherein the chamber door support attaches to a top surface of the heating chamber,

wherein the hinge assembly is functional to open the chamber door to allow access to the product chamber, and to close the chamber door to secure the heating chamber,

wherein the electrical control unit further comprises a connection to the closed door sensor, and

wherein the processor monitors the closed door sensor to determine whether the latch in the chamber door engages the opening in the chamber door support thereby detecting that the chamber door is in a closed position.

13. The apparatus of claim 1, further comprising:

an operator interface,

wherein the electrical control unit further comprises a connection to the operator interface, and

wherein the processor communicates with the operator interface to start and stop an operation cycle, and to provide a status of the operation cycle.