Face masks with noise attenuation
Various illustrative systems, devices, and methods for face masks are provided. In general, a face mask is configured to provide cooling therapy to a user wearing the face mask. In an exemplary implementation, the face mask includes a thermoelectric cooling device, such as a Peltier device, a thermoelectric cooler (TEC), or other thermoelectric cooling device. The face mask includes a fan configured to blow air configured to dissipate the heat created by the thermoelectric cooling device. The face mask includes a noise attenuation system configured to attenuate the generated noise that is radiated into the environment, and thus, heard by the user due to use of the fan.
1 . An apparatus with noise attenuation, comprising:
a face mask configured to be worn on a face of a user, the face mask comprising:
a first air inlet through which air external to the face mask is configured to enter a first flow path,
an air outlet through which the air is configured to exit the first flow path to exit the face mask,
a first thermoelectric cooling device configured to generate cooling and to generate heat,
a first fan configured to cause air to enter the face mask through the first air inlet and to flow along the first flow path from the first air inlet to the first fan and from the first fan along the first flow path to the air outlet, and
at least one of:
a first flared acoustic waveguide at the first air inlet,
a first acoustic chamber along the first flow path and located between the first air inlet and the first fan, and
a first tortuous path along the first flow path and located between the first fan and the air outlet;
wherein the cooling is configured to be applied to the face of the user with user wearing the face mask; and
the air flowing along the first flow path is configured to dissipate the heat.
2 . The apparatus of claim 1 , wherein the face mask includes at least the first acoustic chamber;
the first acoustic chamber includes a first chamber, a second chamber, and a third chamber;
air is configured to flow from the first air inlet to the first chamber, from the first chamber to the second chamber, and from the second chamber to the third chamber; and
the second chamber is expanded as compared to the first and third chambers.
3 . The apparatus of claim 1 , wherein the face mask includes at least the first tortuous path; and
the first tortuous path defines a plurality of twists and turns along the first flow path.
4 . The apparatus of claim 1 , wherein the face mask includes at least the first flared acoustic waveguide; and
the first flared acoustic waveguide is located at an interface between the first air flow path and the first air inlet.
5 . The apparatus of claim 1 , wherein the first air inlet and the air outlet are located at a bottom of the face mask.
6 . The apparatus of claim 1 , wherein the face mask further comprises a first heat sink facing the first thermoelectric cooling device and located downstream of the first fan such that the first fan is configured to blow air toward the first heat sink.
7 . The apparatus of claim 1 , wherein the face mask further comprises a second flared acoustic waveguide at the air outlet.
8 . The apparatus of claim 1 , wherein the face mask includes at least two of the first flared acoustic waveguide, the first acoustic chamber, and the first tortuous path.
9 . The apparatus of claim 1 , wherein the face mask includes all of the first flared acoustic waveguide, the first acoustic chamber, and the first tortuous path.
10 . The apparatus of claim 1 , wherein the face mask further comprises:
a second air inlet through which air external to the face mask is configured to enter a second flow path;
a second thermoelectric cooling device configured to generate cooling and to generate heat;
a second fan configured to cause air to enter the face mask through the second air inlet and to flow along the second flow path from the second air inlet to the second fan and from the second fan along the second flow path to the air outlet; and
at least one of:
a second flared acoustic waveguide at the second air inlet,
a second acoustic chamber along the second flow path and located between the second air inlet and the second fan, and
a second tortuous path along the second flow path and located between the second fan and the air outlet;
the cooling generated by the second thermoelectric cooling device is configured to be applied to the face of the user with user wearing the face mask; and
the air flowing along the second flow path is configured to dissipate the heat generated by the second thermoelectric cooling device.
11 . The apparatus of claim 10 , wherein the face mask includes at least the first acoustic chamber and the second acoustic chamber;
the first acoustic chamber mirrors the second acoustic chamber;
the first acoustic chamber includes a first chamber, a second chamber, and a third chamber;
the second acoustic chamber includes a fourth chamber, a fifth chamber, and a sixth chamber;
air is configured to flow from the first air inlet to the first chamber, from the first chamber to the second chamber, and from the second chamber to the third chamber;
the second chamber is expanded as compared to the first and third chambers;
air is configured to flow from the second air inlet to the fourth chamber, from the fourth chamber to the fifth chamber, and from the fifth chamber to the sixth chamber; and
the fifth chamber is expanded as compared to the fourth and sixth chambers.
12 . The apparatus of claim 10 , wherein the face mask includes at least the first tortuous path and the second tortuous path;
the first tortuous path mirrors the second tortuous path;
the first tortuous path defines a first plurality of twists and turns along the first flow path; and
the second tortuous path defines a second plurality of twists and turns along the second flow path.
13 . The apparatus of claim 10 , wherein the face mask includes at least the first flared acoustic waveguide and the second flared acoustic waveguide;
the first flared acoustic waveguide is located at an interface between the first air flow path and the first air inlet; and
the second flared acoustic waveguide is located at an interface between the second air flow path and the second air inlet.
14 . The apparatus of claim 10 , wherein the first air inlet, the second air inlet, and the air outlet are located at a bottom of the face mask.
15 . The apparatus of claim 10 , wherein the air outlet is one of:
a shared outlet through which air is configured to exit each of the first and second air flow paths, and
first and second air outlets, air being configured to flow through the first air outlet from the first air flow path and through the second air outlet from the second air flow path.
16 . The apparatus of claim 10 , wherein the face mask further comprises:
a first heat sink facing the first thermoelectric cooling device and located downstream of the first fan such that the first fan is configured to blow air toward the first heat sink; and
a second heat sink facing the second thermoelectric cooling device and located downstream of the second fan such that the second fan is configured to blow air toward the second heat sink.
17 . The apparatus of claim 10 , wherein the face mask includes at least two of the first flared acoustic waveguide, the first acoustic chamber, and the first tortuous path; and
the face mask includes at least two of the second flared acoustic waveguide, the second acoustic chamber, and the second tortuous path.
18 . The apparatus of claim 10 , wherein the face mask includes all of the first flared acoustic waveguide, the first acoustic chamber, and the first tortuous path; and
the face mask includes all of the second acoustic waveguide, the second flared acoustic chamber, and the second tortuous path.
19 . An apparatus with noise attenuation, comprising:
a face mask configured to be worn on a face of a user, the face mask comprising:
a first thermoelectric cooling device configured to generate cooling and to generate heat, the cooling generated by the first thermoelectric cooling device being configured to be applied to the face of the user with the user wearing the face mask,
a first fan configured to cause a first air flow configured to dissipate the heat generated by the first thermoelectric cooling device,
a first noise attenuation system configured to attenuate noise caused by the first fan, the first noise attenuation system including at least one of a first flared acoustic waveguide, a first acoustic chamber, and a first tortuous path;
a second thermoelectric cooling device configured to generate cooling and to generate heat, the cooling generated by the second thermoelectric cooling device being configured to be applied to the face of the user with the user wearing the face mask,
a second fan configured to cause a second air flow configured to dissipate the heat generated by the second thermoelectric cooling device, and
a second noise attenuation system configured to attenuate noise caused by the second fan, the second noise attenuation system including at least one of a second flared acoustic waveguide, a second acoustic chamber, and a second tortuous path.