1. An electronic device, comprising:
a device housing;
an emitter for emitting an optical signal as a control signal for the electronic device, and the emitter being separated from the device housing;
a receiver for receiving the optical signal, the receiver being disposed inside the device housing, and a top side of the receiver being shielded by the device housing; and
a reflection structure formed on a surface of the device housing and neighboring to the receiver;
wherein when the emitter is disposed in front of the device housing, the optical signal transmitted from the emitter directly reaches the reflection structure and is reflected by the reflection structure, and then the optical signal travels toward the receiver; and the device housing comprises:
a screen housing having an outer edge; and
an extending portion having a first segment and a second segment, wherein the first segment is connected to the screen housing and extends outwards to allow the second segment to surpass the outer edge, the receiver is disposed on the screen housing, the reflection structure is disposed on the second segment, and when a user is in front of the device housing, the user will see the reflection structure outside the outer edge.
2. The electronic device of claim 1 further comprising a blocking structure formed on the device housing and positioned in front of the receiver, wherein when a user is in front of the device housing, the user will only see the blocking structure which blocks the receiver from user’s sight; and the optical signal must be reflected by the reflection structure to reach the receiver when the optical signal travels from the emitter disposed in front of the electronic device.
3. The electronic device of claim 1, wherein the device housing has an opening, the receiver is disposed within the device housing and corresponds to the opening, and the optical signal travels straight from the reflection structure to the receiver through the opening.
4. The electronic device of claim 1, wherein the first segment extends from the screen housing along a first direction, the second segment extends from the first segment along a second direction to surpass the outer edge of the screen housing, the first direction and the second direction are different, the first segment or the second segment has a horizontal extending part, and the user can hold the horizontal extending part.
5. The electronic device of claim 1, wherein the reflection structure has a first reflecting side and a second reflecting side being two inclined lateral planes of the reflection structure facing front and back of the device housing respectively; and when the emitter is disposed in front of the device housing, the optical signal transmitted from the emitter is reflected by the first reflecting side, and then the optical signal travels toward the receiver; and when the emitter is disposed behind the device housing, the optical signal transmitted from the emitter is reflected by the second reflecting side, and then the optical signal travels toward the receiver.
6. The electronic device of claim 5, wherein when the emitter is disposed in front of the device housing, the optical signal first travels substantially horizontally to the first reflecting side, and then the first reflecting side reflects the optical signal to travel substantially vertically downwards to the receiver; and when the emitter is disposed behind the device housing, the optical signal first travels substantially horizontally to the second reflecting side, and then the second reflecting side reflects the optical signal to travel substantially vertically downwards to the receiver.
7. The electronic device of claim 1, wherein the optical signal reflected by the reflection structure does not enter the device housing before reaching the reflection structure.
8. An electronic device, comprising:
a device housing;
an emitter for emitting an optical signal as a control signal for the electronic device, and the emitter being separated from the device housing;
a receiver for receiving the optical signal, the receiver being disposed inside the device housing, and a top side of the receiver being shielded by the device housing; and
a reflection structure formed on a surface of the device housing and neighboring to the receiver;
wherein when the emitter is disposed in front of the device housing, the optical signal transmitted from the emitter directly reaches the reflection structure and is reflected by the reflection structure, and then the optical signal travels toward the receiver; and the device housing comprises:
a front cover having a first connecting side; and
a back cover connected to the front cover and having a second connecting side;
wherein the first connecting side and the second connecting side are connected to form a dented portion, the receiver is disposed in the front cover and is neighboring to the dented portion of the first connecting side, and the reflection structure is disposed in the dented portion of the second connecting side.
9. The electronic device of claim 8, wherein the dented portion is positioned in a segmental gap between the front cover and the back cover.
10. The electronic device of claim 8, wherein the reflection structure has an appropriately curved surface, and when the optical signal travels to the reflection structure, the appropriately curved surface of the reflection structure properly reflects the optical signal to the receiver.
11. The electronic device of claim 8, wherein the optical signal reflected by the reflection structure does not enter the device housing before reaching the reflection structure.
12. An electronic device, comprising:
a device housing;
an emitter for emitting an optical signal as a control signal for the electronic device, the emitter being separated from the device housing;
a receiver for receiving the optical signal, the receiver being disposed inside the device housing, and a top side of the receiver being shielded by the device housing; and
a reflection structure formed on a surface of the device housing and neighboring to the receiver;
wherein when the emitter is disposed in front of the device housing, the optical signal transmitted from the emitter directly reaches the reflection structure and is reflected by the reflection structure, and then the optical signal travels toward the receiver; and the device housing comprises:
a bottom base having an upper surface; and
a screen housing connected to the bottom base, the screen housing positioned above the bottom base and having a lower surface opposite to the upper surface of the bottom base;
wherein the receiver is disposed on the lower surface of the screen housing, and the reflection structure is disposed on the upper surface of the bottom base.
13. The electronic device of claim 12, wherein the reflection structure has a first reflecting side being an inclined plane substantially, and when the emitter is disposed in front of the device housing, the optical signal first travels substantially horizontally to the first reflecting side, and then the first reflecting side reflects the optical signal to travel substantially vertically upwards to the receiver.
14. The electronic device of claim 13, wherein the reflection structure further has a second reflecting side being an inclined plane substantially, and when the emitter is disposed behind the device housing, the optical signal first travels substantially horizontally to the second reflecting side, and then the second reflecting side reflects the optical signal to travel substantially vertically upwards to the receiver.
15. The electronic device of claim 12, wherein the reflection structure has a first reflecting side, and when the emitter is disposed in front of the device housing, the optical signal transmitted from the emitter is reflected by the first reflecting side, and then the optical signal travels toward the receiver.
16. The electronic device of claim 15, wherein the reflection structure further has a second reflecting side, and when the emitter is disposed behind the device housing, the optical signal transmitted from the emitter is reflected by the second reflecting side, and then the optical signal travels toward the receiver.
17. The electronic device of claim 16, wherein the reflection structure is a triangular prism, and the first reflecting side and the second reflecting side are two inclined lateral planes of the triangular prism facing front and back of the device housing respectively.
18. The electronic device of claim 12, wherein the optical signal reflected by the reflection structure does not enter the device housing before reaching the reflection structure.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A cylindrical reactor comprising:
a reactor housing having a gas inlet, a gas outlet, a catalyst inlet and a catalyst outlet;
an annular baffle having a upper edge and a lower edge, and disposed within the reactor housing, wherein the baffle upper edge is affixed to the reactor housing over the gas inlet, and the baffle lower edge extends to a position below the gas inlet; and
a plurality of slotted plates, wherein the slotted plates are arrayed from the baffle lower edge to a position proximate the catalyst outlet.
2. The reactor of claim 1 wherein the plates are disposed at an angle at least as great as the angle of repose for the catalyst.
3. The reactor of claim 1 wherein the plates are positioned such that the slots have a vertical orientation.
4. The reactor of claim 1 wherein the slotted plates have a solid particle side and a fluid side and a plate thickness, and wherein the solid particle side comprises a milled plate having solid particle side slots formed therein in a parallel manner and the fluid side comprises a milled plate having fluid side slots formed therein in a parallel manner, and where the solid particle side slots intersect the fluid side slots to provide a plate allowing fluid to flow through the plate.
5. The reactor of claim 4 wherein the solid particle side slots have a width less than or equal to 1 mm, and the fluid side slots have a width greater than the solid particle side slots.
6. The reactor of claim 5 wherein the solid particle side slots have a width less than or equal to 0.7 mm.
7. The reactor of claim 4 wherein the solid particle side slots have a depth from between 0.05 and 0.5 times the thickness of the plate.
8. The reactor of claim 4 wherein the fluid side slots have a depth from between 0.5 and 0.95 times the thickness of the plate.
9. The reactor of claim 4 wherein the solid particle side slots have a length of at least 100 mm with a spacing between longitudinally oriented slots of at between 5 mm and 30 mm.
10. The reactor of claim 1 wherein the solid particle side slots extend to at least 20 mm from the end of the plate.
11. The reactor of claim 1 wherein the slotted plates have a solid particle side and a fluid side and a plate thickness, and wherein the solid particle side comprises a milled plate having solid particle side slots formed therein in a parallel manner and the fluid side comprises a side having holes wherein the holes are formed and intersect the slots to allow for the passage of fluid through the plate.
12. The apparatus of claim 11 wherein the holes in the fluid side are formed in parallel lines and aligned with the slots in the first side.
13. The apparatus of claim 11 wherein the holes in the fluid side have a diameter of less than 5.0 mm.
14. The apparatus of claim 13 wherein the holes in the fluid side have a diameter of less than 2.0 mm.
15. The apparatus of claim 1 wherein the slots in the solid particle side are spaced between 2.5 and 5 mm apart.
16. The reactor of claim 1 further comprising a volume fill element, for filling volume at the bottom of the reactor.
17. The reactor of claim 16 wherein the volume fill element is a conic section having a slope equal to or greater than the angle of repose for the catalyst.
18. The reactor of claim 17 wherein the volume fill element has a lower edge at the level of the baffle lower edge, further comprising a plurality of slotted plates, wherein the slotted plates are arrayed from the volume fill element lower edge to a position proximate the catalyst outlet, thereby creating a void space underneath the volume fill element.
19. The reactor of claim 18 further comprising at least one vapor pipe having an inlet in fluid communication with the reactor gas inlet and an outlet in fluid communication with void space underneath the volume fill element.
20. The reactor of claim 16 where the volume fill element comprises a reactor bed plate positioned proximate to the lower edge of the baffle to create an annular opening for catalyst to flow through; and a conical section affixed to the reactor bed plate.
21. The reactor of claim 20 further comprising:
a plurality of non-slotted plates, wherein the non-slotted plates are arrayed from the edge of the reactor bed plate to a position proximate the catalyst outlet.