JPWO2020185100A5

JPWO2020185100A5 -

Info

Publication number: JPWO2020185100A5
Application number: JP2021555193A
Authority: JP
Publication date: 2023-08-02

Claims

A humidifier for humidifying a gas stream supplied to a user, comprising:
a base unit including a heater plate;
A humidification chamber configured to hold a humidification fluid, comprising:
conductive base,
one or more wall portions configured to be connected to the base portion;
a humidification chamber comprising an inlet and an outlet;
at least one inlet temperature sensor positioned within or adjacent to the inlet of the humidification chamber;
at least one outlet temperature sensor positioned in or adjacent to the outlet of the humidification chamber;
outputting a heater plate control signal to control the amount of power supplied to the heater plate based at least in part on a function of the outlet temperature measured from the signal received from the outlet temperature sensor;
determining the inlet temperature of the gas received in the humidification chamber based on the signal received from the inlet temperature sensor;
determining that the inlet temperature exceeds a threshold temperature, the threshold temperature being determined by an outlet temperature setpoint and/or by a target humidity after the humidification chamber;
an electronic controller configured to reduce a target humidity of gas applied by the humidifier and exiting the outlet of the humidification chamber in response to the inlet temperature exceeding the threshold temperature. A humidifier.

a humidifier for reducing the target humidity, wherein the controller reduces the amount of power supplied to the heater plate in response to the inlet temperature exceeding the threshold temperature; and 10. The humidifier of claim 1, configured to reduce the heater plate temperature set point.

3. The humidifier of claim 2, wherein the controller is configured to reduce the amount of power below a power threshold.

4. The humidifier of claim 3, wherein the power threshold is set to achieve a minimum dew point of 19[deg.]C and/or to achieve a minimum humidity output of 15mg/L.

The control device is
by a first mode when the inlet temperature is below the threshold temperature and a second mode when the inlet temperature is above the threshold temperature; and/or
by a first function applied when the inlet temperature is below the threshold temperature,
A humidifier according to any preceding claim, configured to control the amount of power supplied to the heater plate power.

The controller controls or limits the amount of power supplied to the heater plate power by a second function, different from the first function, applied when the inlet temperature exceeds the threshold temperature. 6. The humidifier of claim 5, configured to.

The controller is configured to reduce or cap the outlet temperature setpoint to define a maximum allowable outlet temperature setpoint when the inlet temperature exceeds a threshold temperature. , the humidifier according to any one of claims 1 to 6.

A humidifier according to any preceding claim, wherein the threshold temperature is between 22°C and 24°C.

A humidifier according to any preceding claim, wherein the target humidity after the humidification chamber is a desired dew point.

operable in one of a plurality of modes, each mode defining a plurality of outlet temperature set points and/or target humidity after said humidification chamber, any one of said plurality of modes; 10. The controller is configured to reduce the amount of moisture added by the humidifier based on the inlet temperature exceeding the threshold when operating in a Humidifier as described.

11. The humidifier of claim 10, wherein the multiple modes include an invasive mode, a non-invasive mode, and a high flow mode.

12. The humidifier of claim 11, wherein the controller is configured to limit humidity added to incoming gas when operating in non-invasive mode.

13. A humidifier according to claim 11 or 12, wherein said mode is manually selectable by a user.

The humidifier of any one of claims 11-13, wherein the humidifier includes user-selectable outlet temperature set points of 31°C, 29°C, and 27°C in the non-invasive mode.

14. The humidifier according to any one of claims 11 to 13, wherein the humidifier includes user-selectable outlet temperature set points of 31°C, 34°C and 37°C and/or target humidity after the humidification chamber. The humidifier described in .

The target humidity for the or each outlet temperature set point applied by the humidifier is predetermined when the inlet temperature is below the threshold temperature and is applied by the humidifier when the inlet temperature exceeds the threshold. A humidifier according to any preceding claim, wherein the target humidity of the or each outlet temperature set point set is reduced to a relatively low predetermined value.