An alarm sounder and at least one sound amplification component having at least one horn shaped channel form an alarm detector. The at least one horn shaped channel has a throat end and an outlet end, the throat end being disposed corresponding to a sound-making end of the alarm sounder. The sound intensity of the alarm detector can meet the regulations of the industry standards.
1. An alarm detector base, comprising:
an alarm sounder, having a sound-making end; and
a sound amplification component having at least one horn channel, the at least one horn channel including a throat end and an outlet end, the throat end disposed corresponding to the sound-making end of said alarm sounder,
wherein each horn channel is disposed to extend along a radial direction perpendicular to an axis of said alarm detector base, and is in a horn shape on a radial section, and
a plurality of grills located at the outlet end of each horn channel to divide the outlet end of the respective horn channel into a plurality of sub-outlets,
wherein each sub-outlet defined by a respective grill has a horn shape providing a straight-line path through the respective grill along the radial direction and having (a) a first width in a first direction perpendicular to the radial direction and (b) second width in a second direction perpendicular to the first direction and tangential to the radial direction, wherein both the first width and second width of the respective sub-outlet increase along the radial direction from an inlet end of the sub-outlet to an outlet end of the sub-outlet to amplify sound from the alarm sounder.
2. The alarm detector base as claimed in claim 1 , wherein said at least one horn channel is a cavity formed around the axis of said alarm detector base.
3. The alarm detector base as claimed in claim 1 ,
wherein said alarm detector has an axis, and
wherein said sound amplification component includes a plurality of horn channels uniformly or non-uniformly distributed around the axis of said alarm detector base.
4. The alarm detector base as claimed in claim 1 , wherein said alarm sounder is a buzzer or a speaker.
5. The alarm detector base as claimed in claim 1 , wherein said alarm detector base further comprises a fire alarm.
6. The alarm detector base as claimed in claim 1 , wherein said alarm detector base further comprising a sensor plate with a set of contacts to receive an alarm detector.
7. The alarm detector base as claimed in claim 1 , wherein said sound amplification component includes a multiplicity of horn channels forming a multiplicity of cavities distributed around the axis of said alarm detector base.
8. The alarm detector base as claimed in claim 1 , wherein said sound amplification component has a single horn channel extending fully around a circumference of the alarm detector base.