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US20030164091: Hydrogen peroxide vapor system with replaceable desiccant cartridge

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Filing Information

Inventor(s) Arthur Nagare · Frank Dougherty · Stanley Voyten · Aaron Hill ·
Assignee(s) STERIS INC. ·
Correspondent Thomas E. Kocovsky, Jr. FAY, SHARPE, FAGAN, MINNICH & McKEE, LLP ·
Application Number US10377557
Filing date 02/28/2003
Publication date 09/04/2003
Predicted expiration date 02/28/2023
U.S. Classifications 95/90  · 96/134  · 96/143  · 96/108  · 96/147  · 95/148  ·
International Classifications B01D053/02  ·
Kind CodeA1
Related U.S. Application Data0001 This application claims the benefit of U.S. Provisional application Serial No. 60/361,129, filed Feb. 28, 2002.
30 Claims, 8 Drawings


Abstract

A hydrogen peroxide vapor generation unit (10) receives hydrogen peroxide and water solution at an interface (20) and interconnects with an air dryer (14) by way of nipples (72, 92). In one embodiment, the dryer includes a clamping assembly (42) which is latched (74, 94) with the nipples and which receives a disposable desiccant cartridge (40). In an alternate embodiment, a reusable desiccant cartridge (40′) is connected directly to the nipples (72, 92). When the desiccant cartridge (40′) is saturated, it is removed and placed in a regenerator unit (120). A regenerated cartridge is installed in its place.

Independent Claims | See all claims (30)

  1. 1. A peroxy vapor system including: a liquid peroxy solution interface for receiving a source of liquid peroxy solution; a vaporizer for vaporizing the liquid peroxy solution and entraining the vapor in air; and, a replaceable desiccant dryer removably connected with the vaporizer for drying the air in which the vapor is being entrained.
  2. 14. A means for generating peroxy vapor including: a means for connecting a source of liquid peroxy solution with an interface for a vaporizer; a means for vaporizing the liquid peroxy solution and entraining the vapor in dry air; a means for supplying the entrained peroxy vapor and air to a point of use; returning air, water vapor, and peroxy vapor from the point of use through a replaceable desiccant dryer; and a means for releasing the desiccant dryer when or before the desiccant dryer becomes saturated, and receiving an unsaturated replacement desiccant dryer.
  3. 15. A replaceable desiccant cartridge for a vapor hydrogen peroxide generating system that includes a liquid peroxy solution cartridge interface for interconnection with cartridges of liquid peroxy solution, a vaporizer for vaporizing the liquid solution and entraining the vapor in dry air, a unit which receives the desiccant cartridge to supply the dry air to the vaporizer, the discharge unit including a pair of elements one of which includes a dry air discharge passage and the other includes a humid air supply passage, the desiccant cartridge being received by the pair of elements in a fluid tight relationship, a piston mounted in one of the end elements, the piston having a sealing face, a second sealing face on the other end element, the sealing faces facing each other to receive the desiccant cartridge therebetween, and a mechanism for retracting the piston to facilitate removal of a saturated desiccant cartridge and receipt of an unsaturated desiccant cartridge, the disposable desiccant cartridge comprising: a tubular chamber with end closures at either end; a desiccant material received in the tubular chamber; an inlet aperture defined in one end closure and an outlet aperture defined in an opposite end closure; annular gaskets surrounding the apertures of the end closures; a screen element at each end aperture for retaining the desiccant material within the tubular element; and removable seals closing the end apertures to prevent humidity from entering the desiccant cartridge before the seals are removed.
  4. 16. A dryer for a vapor peroxy generation system including: a vaporizer which vaporizes a peroxy composition and water solution and entrains the vapor in dry air; a peroxy vapor discharge outlet through which the peroxy vapor and air are discharged; a vapor and air recovery inlet into which partially spent peroxy vapor, water vapor, and air are returned; a dry air inlet nipple projecting from the peroxy vapor unit for supplying the dry air to the vaporizer, the inlet nipple having a latch engaging surface; a recovered air and vapor discharge nipple having a latching surface; the dryer comprising: a first end element having a bore for receiving the dry air inlet nipple in a fluid-tight relationship, a second end element having a bore for receiving the recovered air and vapor discharge nipple in a fluid-tight relationship, a desiccant chamber connected between the first and second end elements, a first latch mounted to the first end element for engaging the dry air inlet nipple latching surface for latching the first end element to the dry air inlet nipple, a second latch mounted to the second end element for engaging the received air and vapor discharge nipple latch surface for latching the second end element to the recovered air and vapor discharge nipple.
  5. 21. A disposable desiccant cartridge comprising: a tubular chamber with end closures at either end; a desiccant material received in the tubular chamber; an inlet aperture defined in one end closure and an outlet aperture defined in an opposite end closure; annular gaskets surrounding the apertures of the end closures; a screen element at each end aperture for retaining the desiccant material within the tubular element; and removable seals closing the end apertures to prevent humidity from entering the desiccant cartridge before the seals are removed.
  6. 22. A quick connect/disconnect desiccant dryer comprising: (a) an upper portion and a lower portion that are spaced apart and a container extending between the upper portion and the lower portion, the container holding a desiccant, the upper portion having an input port and an output port, the lower portion having an input port and an output port, the output port of the upper portion fluidly connected to a first port of the container and the input port of the lower portion fluidly connected to a second port of the container; and, (b) at least one clamp located on the apparatus engageable with a fixture located on a device to securely affix the dryer to the device.
  7. 24. A quick connect/disconnect apparatus comprising: (a) a holder having a first portion and a second portion, the first and second portions rigidly connected and spaced apart so as to receive a cartridge therebetween, the first portion having an input port and an output port, the second portion having an input port and an output port, the output port of the first portion fluidly connectable to a first port of the cartridge and the input port of the second portion fluidly connectable to a second port of the cartridge; (b) the first portion of the holder having a clamping mechanism operable after the cartridge has been placed in the holder to clamp the cartridge between the first portion and the second portion such that the output port of the first portion is in alignment with the first port of the cartridge and the input port of the second portion is in alignment with the second port of the container; and, (c) at least one clamp located on the holder engageable with a fixture located on a device to securely affix the holder to the device.
  8. 27. A method of generating peroxy vapor including: connecting a source of liquid peroxy solution with an interface for a vaporizer; vaporizing the liquid peroxy solution and entraining the vapor in dry air; supplying the entrained peroxoy vapor and air to a point of use; returning air, water vapor, and peroxy vapor from the point of use through a replaceable desiccant dryer; and releasing the desiccant dryer when or before the desiccant dryer becomes saturated, receiving an unsaturated replacement desiccant dryer.

References Cited

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Patent Family

Document NumberAssigneeInventorsIssue/Pub Date
US20030164091 STERIS INC. Arthur Nagare et al. Sep 2003
US7431900 Steris Inc Aaron L. Hill et al. Oct 2008