Drying apparatus and related methods

Patent metadata

Field	Value
Publication number	US-11457776-B2
Application number	US-202017014798-A
Country	US
Kind code	B2
Filing date	Sep 8, 2020
Priority date	Mar 19, 2020
Publication date	Oct 4, 2022
Grant date	Oct 4, 2022

Abstract

A drying apparatus includes a body, a controller, a thermal sensor to sense an ambient temperature, a humidity sensor to sense an ambient humidity, an air outlet to vent an airflow, a flow generator to generate the airflow within the body, and a thermoelectric device including an inward surface and an outward surface, where the inward surface heats or cools the airflow generated by the flow generator. The controller is configured to control a temperature of the inward surface of the thermoelectric device based on the ambient temperature and the ambient humidity.

First claim

What is claimed is:

1. A drying apparatus comprising:
a body;
a controller;
a thermal sensor to sense an ambient temperature;
a humidity sensor to sense an ambient humidity;
an air outlet to vent an airflow;
a flow generator to generate the airflow within the body;
a thermoelectric device comprising an inward surface and an outward surface,
a bar;
a second air outlet to vent a second airflow;
a second flow generator to generate the second airflow within the bar;
a heater to heat the second airflow;
wherein the inward surface heats or cools the airflow generated by the flow generator; and

wherein the controller is configured to control a temperature of the inward surface of the thermoelectric device based on the ambient temperature and the ambient humidity,
wherein the controller is configured to control a temperature of the heater based on an air speed of the second airflow and a temperature of the second airflow.

2. The drying apparatus of claim 1 , wherein the controller is configured to:
determine a temperature-humidity index (THI) based on the ambient temperature and the ambient humidity; and
activate the thermoelectric device and the flow generator when the THI is greater than a predetermined target.

3. The drying apparatus of claim 1 , wherein the controller is configured to:
determine a wind-chill index based on the air speed of the second airflow and the temperature of the second airflow; and
activate the heater when the wind-chill index is greater than a predetermined target.

4. The drying apparatus of claim 3 , wherein a revolutions per minute (RPM) of the second flow generator is variable, and the controller is configured to:
determine the RPM of the second flow generator;
determine the wind-chill index based on the RPM of the second flow generator and the temperature of the second airflow; and
activate the heater when the wind-chill index is greater than a predetermined target.

5. A drying apparatus comprising:
a body;
a bar movable relative to the body;
an air inlet;
a flow generator to receive inlet air from the air inlet and generate an airflow;
a thermal element to modify a temperature of the airflow;
a bar airflow outlet at the bar;
a sensor to generate a signal, the sensor to detect one or more sensed parameters selected from
(1) ambient temperature,
(2) a user characteristic, or
(3) ambient temperature and a user characteristic; and
a controller configured to control a flow generator operation, the controller coupled to the sensor and configured to operate the flow generator based on the signal received from the sensor.

6. The drying apparatus of claim 5 , wherein the flow generator generates airflow through a body airflow outlet.

7. The drying apparatus of claim 6 , wherein the controller is configured to
receive a signal from the sensor indicative of a sensed parameter;
determine if the signal is within a predetermined threshold; and
activate at least one of the flow generator and the thermal element based on the determined signal to generate airflow through the body air outlet to provide airflow at an airspeed and/or temperature to modify a sensed parameter.

8. The drying apparatus of claim 7 , wherein a user characteristic is selected from the user's skin moisture level or skin surface temperature, or the user's specific zone subject to the airflow.

9. The drying apparatus of claim 8 , wherein the controller is configured to
(i) decrease outlet airflow speed where a sensor detects a skin surface temperature below a predetermined threshold; or
(ii) increase outlet airflow temperature where a sensor detects a skin surface temperature below a predetermined threshold; or
perform both (i) and (ii).

10. The drying apparatus of claim 8 , wherein the controller is configured to
(i) increase outlet airflow speed where a sensor detects a skin surface temperature above a predetermined threshold; or
(ii) decrease outlet airflow temperature where a sensor detects a skin surface temperature above a predetermined threshold; or
Perform both (i) and (ii).

11. The drying apparatus of claim 8 , wherein the controller is configured to terminate airflow to the specific zone of the user's skin where the detected skin moisture level is below a predetermined threshold.

12. The drying apparatus of claim 8 , wherein the controller is configured to detect the specific zone of the user's skin subject to the airflow, and to operate the flow generator to achieve a skin moisture level corresponding to that specific zone of the user's skin.

13. The drying apparatus of claim 12 , wherein the controller is configured to set the airflow speed and/or temperature in view of:
(i) the ambient air temperature; or
(ii) the humidity of the ambient air; or
(iii) the specific zone of the user's skin subject to the airflow; or
(iv) the wind chill index; or
any one or more of (i) to (iv).

14. The drying apparatus of claim 12 wherein the controller is configured to deliver airflow at a perceived temperature of between 20 and 39° C.

15. The drying apparatus of claim 12 wherein a user's skin is categorized into at least two different zones, being a normal zone and a sensitive zone, and wherein the controller is adapted to increase the target moisture content of the sensitive zone relative to the normal zone.

16. The drying apparatus of claim 15 wherein the sensitive zone includes skin located on any one or more of the face, the groin and the chest region of a female.

17. The drying apparatus of claim 5 , wherein the thermal element comprises a thermoelectric device to modify the temperature of the airflow.

18. The drying apparatus of claim 5 , wherein the thermal element comprises a resistance heater utilized to provide heating of the airflow.

19. The drying apparatus of claim 5 , wherein the sensor includes a thermal sensor.

Assignees

• Lg Electronics Inc

Inventors

• Yoo Hyun Sun
• Lee Seung Yup
• Lee Sang Yoon
• Oh Byung Soo
• Jeon Hyun-Joo
• Cheon So Ra
• Yoon Ji Sun

Classifications

• F26B21/37

  Velocity of flow; Quantity of flow · CPC title

• F26B21/35

  Temperature; Pressure · CPC title

• F26B3/04

  the gas or vapour circulating over or surrounding the materials or objects to be dried (F26B3/14 takes precedence) · CPC title

• A47K10/48 Primary

  Drying by means of hot air · CPC title

• F26B23/06

  resistance heating · CPC title