Patent ID: 11918835
Assignee: HONEYWELL INTERNATIONAL INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC A  F | IPC A  F

Claim 9:
10. A powered air-purifying respirator (PAPR) comprising:
an air pump including an air channel and an electric motor; and
an eccentric venturi, coupled to the air channel, including:
a first sensor port and a second sensor port;
a conductor comprising a conductor portion and a first transition portion,
wherein the conductor portion has a first axis,
wherein the first transition portion downstream from the conductor portion, and
wherein a whole circumference of the first transition portion is angularly offset relative to a whole circumference of the conductor portion;
a diffuser comprising a diffuser portion and a second transition portion, the diffuser portion downstream from the second transition portion having a second axis; and
a throat comprising portion downstream from the first transition portion having a third axis, wherein the first transition portion has a first tapered portion such that a width of the conductor portion is greater than a width of the throat portion;
wherein the second transition portion is downstream from the throat portion,
wherein a whole circumference of the second transition portion is angularly offset relative to a whole circumference of the diffuser portion,
wherein the second transition portion has a second tapered portion such that the width of the throat portion is less than a width of the diffuser portion,
wherein the third axis of the throat portion is angularly offset to the first axis of the conductor portion and the second axis of the diffuser portion,
wherein the first axis of the conductor portion makes an angle α with the second axis of the diffuser portion, and
wherein the angle α is at least greater than or equal to 8 degrees and less than 35 degrees.