Electric resistance heating devices – Heating devices – Vaporizer
Patent
1998-01-12
1999-10-19
Walberg, Teresa
Electric resistance heating devices
Heating devices
Vaporizer
261139, 261104, A01G 1306, C10K 1500, B01D 4700
Patent
active
059702109
DESCRIPTION:
BRIEF SUMMARY
This invention relates to an apparatus for compensating heat and humidity loss in a device that administers or restitutes warn and humid air to a patient, amongst others in a device that comprises an air supply duct which extends between a respirator or an anaesthesia apparatus and the patient.
The apparatus can thus as well be part of an artificial nose as be placed outside this artificial nose. Artificial noses are also known under the abbreviation H.M.E.
An object of the invention is to prescribe an apparatus that maintains the heat level and the humidity proportion of the circulating air at the requested level, can be connected in an air supply duct at an arbitrary localisation so that a very great flexibility of the device is assured.
A further very clear object of the invention is to propose a solution to the bothersome and sometimes dangerous occurrence for the patient, of too much condensation water in the air supply ducts appertaining to such an apparatus, so that the provision of water traps provided in all existing apparatuses until now are no longer needed.
To make this possible according to the invention, the apparatus according to the invention is characterised in that it has a connecting housing (1) with a coupling connected to this air supply duct, in which coupling a heating resistance is mounted, in which housing water is admitted, and further characterised by the presence in this housing of a membrane with water impermeable but water vapour permeable characteristics and of an element that assures the desired heat level in above mentioned coupling and air supply duct.
In a preferred embodiment the above mentioned element is a metal perforated plate acting like a heat exchanger.
According to a possible variant the above mentioned element is an additional heating resistance.
Still according to the invention the above mentioned housing is cylindrical and the above mentioned heating resistance is mounted in a cylindrical component, whereof the flat side, i.e. the side that is directed towards above mentioned membranes, comprises at least a transversal canal for the dispersion of the water admitted in the housing.
Other details and advantages of the invention will appear from the following description of an apparatus for compensating heat and humidity loss in a device that administers or restitutes warm and humid air to a patient.
The description is only given by way of example and does not limit the invention. The reference numbers relate to the hereto annexed figures.
FIG. 1 is a perspective exploded view representation of the apparatus according to the invention.
FIG. 2 is, at a greater scale, a longitudinal cross section through the apparatus according to the invention.
FIG. 3 is a longitudinal cross section, with a partial omission, for a first variant.
FIG. 4 is a longitudinal cross section, with a partial omission, for a second variant.
FIG. 5 schematically shows a device for the maintenance of an anaesthesia wherein the apparatus according to the invention is connected.
FIG. 6 schematically shows a respiratory device wherein the apparatus according to the invention is connected.
The apparatus represented by these figures and more particularly by FIG. 1, is composed of a housing 1 that is cylindrical in the most favourable embodiment.
The cylindrical housing is realised by fitting the cylindrical component 2 in the cylindrical component 2' with the smallest diameter. The fitting together of the cylindrical components 2 and 2' is realised by using an obvious solution, for example by using a bayonet catch 3.
On the cylindrical part 2 a coupling 4 is connected that, in use, is part of an air supply duct to a patient. The coupling described here is represented in form of a T, but it could take another form if needed. By air supply duct must be understood the part of the duct that is connected to a non illustrated anaesthesia or a non illustrated respiratory apparatus.
In FIG. 5 the duct 5 is represented which connects an anaesthesia apparatus with an artificial nose 6. Downstream of this ar
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Paik Sam
Ponnet, Gilman & Anthony VOF
Walberg Teresa
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