1. An air cleaner with aroma generation, the air cleaner comprising
a main body 10 formed with an outlet 11 for discharging air filtered by an air filter
a fan installed inside of the main body 10 and forcing the filtered air to be discharged through the outlet 11;
a receiving case 20 installed into the main body 10 and having first through-slits 21 formed on circumferential surface and hooking holes 22 in the shape of arc formed at an end thereof;
a rotating case 30 for receiving an aroma pack, the rotating case being inserted into the receiving case 20 and having second through slits 31 corresponding to the first slits 21 formed along circumferential surface and hooks 32 formed at an end thereof for being hooked on the hooking holes 22, wherein the first through-slits 21 may or may not overlap with the second through-slit 31 depending on rotation angle of the rotating case 30 about an axis 33 while the hooks 32 are hooked on the hooking holes 22; and
a lid 40 for opening and closing the rotating case 30.
2. An air cleaner as claimed in claim 1,
wherein a center hole 23 is formed at a center of the end of receiving case 20 and a restricting hole 24 is formed between the hooking holes 22 and the center hole 23;
wherein an axis 33 is formed at an end of the rotating case 30 and the axis 33 is to be inserted into the center hole 23; and,
wherein a restricting protrusion 34 is formed between the hooks 32 and the axis 33 and the restricting protrusion 34 is to be inserted into the restricting hole 24.
3. An air cleaner as claimed in claim 1.
wherein a flange 35 is formed at the other end of the rotating case 30 and the flange 35 has along it edge protrusions 36 elastically projecting in a radial direction and flange grooves 37 formed with partially cut-away portion; and,
wherein hooking grooves 46 hooked by the protrusion 36, and hooking protrusions 47 passing through the flange grooves 37 to be hooked onto a lower surface of the flange 37 is formed on an inner circumference of the lid 40.
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 method of wrapping stacks (2) of products (3), the method comprising a feed step, in which a stack (2) of products (3) is fed to a radial seat (7) of a wrapping wheel (5) rotating in steps about an axis of rotation (6) to feed said radial seat (7) in a given travelling direction (8) and along an endless path (P) extending through a loading station (9) for loading said stack (2), and through an unloading station (10), said stack (2) being positioned with its longitudinal axis (11) parallel to said axis of rotation (6), and being fed to said radial seat (7) through an output station (23) of a feed line (24) supplying heat-seal sheets (4) of wrapping material, so as to mate with a respective said sheet (4) of wrapping material at said output station (23), and engage said radial seat (7) while folding said sheet (4) of wrapping material into a U with two opposite lateral flaps (25) projecting from the relative said stack (2) and outwards of said radial seat (7); a first folding step, in which said two lateral flaps (25) are folded about the relative said stack (2) to define, about the stack (2), a tubular wrapping (51) coaxial with said longitudinal axis (11) and having a longitudinal rib (50) defined by superimposed lateral end portions (25a) of said lateral flaps (25); a sealing step, in which said lateral end portions (25a) are sealed to each other; and a second folding step, in which said longitudinal rib (50) is folded squarely onto an outer surface (54) of said tubular wrapping (51); and being characterized in that said two folding steps and said sealing step are performed by folding means (26) comprising two opposite sealing members (45, 47), which perform respective movements to move with respect to each other to and from a closed position contacting each other, and to accompany said radial seat (7) along a portion (P1) of said path (P) during the folding and sealing steps.
2. A method as claimed in claim 1, wherein said portion of the path (P1) is less than one travelling step of the wrapping wheel (5).
3. A method as claimed in claim 1, wherein said portion (P1) of the path (P) extends in said travelling direction (8) from said loading station (9).
4. A method as claimed in claim 1, wherein said movements of said sealing members (45, 47) are oscillations about said axis of rotation (6).
5. A method as claimed in claim 1, wherein said folding means (26) comprise a folding gripper (26) having two jaws (29, 31) mounted to oscillate about said axis of rotation (6) by virtue of respective actuating means (39, 35; 40, 36); each said jaw (29; 31) being fitted with a respective said sealing member (47; 45).
6. A method as claimed in claim 1, wherein said first folding step is performed by said sealing members (45, 47) when said radial seat (7) is arrested at said loading station (9).
7. A method as claimed in claim 1, wherein said sealing step is at least partly performed by said sealing members (45, 47) in the course of one travelling step of said wrapping wheel (5).
8. A method as claimed in claim 1, wherein said second folding step is performed by said longitudinal rib (50) striking one (45) of said sealing members (45, 47).
9. A wrapping wheel for conditioning stacks (2) of products (3), the wrapping wheel (5) being mounted to rotate about an axis of rotation (6), and comprising a number of radial seats (7), which are fed in steps in a given travelling direction (8) and along an endless path (P) extending through a loading station (9) for loading said stacks (2), and through an unloading station (10), and which receive respective said stacks (2) positioned with respective longitudinal axes (11) parallel to said axis of rotation (6); feed means (21, 22) for feeding each said stack (2) to a relative said radial seat (7) at said loading station (9) and through a feed line (24) supplying heat-seal sheets (4) of wrapping material, so as to mate each said stack (2) with a respective said sheet (4) of wrapping material, and engage the relative said radial seat (7) while folding the relative said sheet (4) of wrapping material into a U about the relative said stack (2), and with two opposite lateral flaps (25) projecting from the relative said stack (2) and outwards of said radial seat (7); and folding means (26) for folding said two lateral flaps (25) about the relative said stack (2) to define, about the stack (2), a tubular wrapping (51) coaxial with the relative said longitudinal axis (11) and having a longitudinal rib (50) defined by superimposed lateral end portions (25a) of said lateral flaps (25), and for folding said longitudinal rib (50) squarely onto an outer surface (54) of the relative said tubular wrapping (51); and being characterized in that said folding means (26) comprise two opposite sealing members (45, 47) for sealing said lateral portions which perform respective movements to move with respect to each other to and from a closed position contacting each other, and to accompany said radial seat (7) along a portion (P1) of said path (P) during the folding and sealing operations.
10. A wrapping wheel as claimed in claim 9, wherein said portion (P1) of the path (P) is less than one travelling step of the wrapping wheel (5).
11. A wrapping wheel as claimed in claim 9, wherein said portion (P1) of the path (P) extends in said travelling direction (8) from said loading station (9).
12. A wrapping wheel as claimed in claim 9, wherein said movements of said sealing members (45, 47) are oscillations about said axis of rotation (6).
13. A wrapping wheel as claimed in claim 9, wherein said folding means (26) comprise a folding gripper (26) having two jaws (29, 31) mounted to oscillate about said axis of rotation (6) by virtue of respective actuating means (39, 35; 40, 36); each said jaw (29; 31) being fitted with a respective said sealing member (47; 45).
14. A wrapping wheel as claimed in claim 13, wherein each jaw (29; 31) is defined by a first arm (29; 31) of a respective rocker arm (27; 28) pivoting about said axis of rotation (6); each rocker arm (27; 28) comprising a second arm (30; 32) connected to the respective said actuating means (39, 35; 40, 36).
15. A wrapping wheel as claimed in claim 14, wherein each said actuating means (39, 35; 40, 36) comprises a powered connecting rod-crank crank mechanism (35; 36).
16. A wrapping wheel as claimed in claim 14, wherein each said sealing member (45; 47) comprises a respective sealing rod (45; 47) extending parallel to said axis of rotation (6).
17. A wrapping wheel as claimed in claim 14, wherein each sealing member (45; 47) is connected to a free end of the relative first arm (29; 31) of the relative rocker arm (27; 28).
18. A wrapping wheel as claimed in claim 17, wherein one (47) of said sealing members (45, 47) is connected to the free end of the relative first arm (29; 31) of the relative said rocker arm (27; 28) via the interposition of springs (49) positioned crosswise to the sealing member (47).