1. A cooling system for cooling a semiconductor device mounted on an electronic printed circuit board, which is stored within a housing of an electronic apparatus, comprising:
a heat-receiving jacket, which is attached on said semiconductor device, being thermally connected with a surface thereof, and which vaporizes a liquid refrigerant received within a pressure-reduced inner space thereof, with heat generation from said semiconductor device;
a condenser, which stores the refrigerant vapor from said heat-receiving jacket in a pressure-reduced inner space thereof and condenses the refrigerant vapor by transferring heats into an outside of the apparatus;
a first conduit, which guides the refrigerant vapor from said heat-receiving jacket into said condenser; and
a second conduit, which guides the liquid refrigerant from said condenser into said heat-receiving jacket, and thereby applying a thermo siphon for circulating said refrigerant due to phase changes thereof, wherein
said condenser has a cooling tube for cooling down the refrigerant vapor from said heat-receiving jacket on an inner wall surface thereof, and said cooling tube forms fine grooves on the inner wall surface along a direction of flow of the refrigerant, and is formed flat in a cross-section thereof.
2. The cooling system described in the claim 1, wherein said cooling conduit is disposed into a vertical direction.
3. The cooling system described in the claim 2, wherein the inner wall surface of said cooling conduit has a flat portion and a curved portion.
4. The cooling system described in the claim 3, wherein at an upper and a lower end of said cooling conduit are provided header portions, respectively.
5. The cooling system described in the claim 4, wherein heat radiating fins are provided on a periphery of said cooling conduit.
6. The cooling system described in the claim 5, wherein said heat radiating fins are offset-fins.
7. The cooling system described in the claim 1, wherein said heat-receiving jacket is provided with a porous structure surface on the inner wall surface to be in contact with the surface of said semiconductor.
8. The cooling system described in the claim 7, wherein said porous structure surface is formed in an about \u201cL\u201d-like shape.
9. The cooling system described in the claim 1, further comprising a ventilating means, which is configured to supply an air from the outside of the electronic apparatus onto a part of said condenser, and discharges the heats into the outside of the apparatus from said condenser.
10. An electronic apparatus, storing an electronic printed circuit board mounting a semiconductor device on a surface thereof within a housing thereof, and having a cooling fan in a part thereof, thereby cooling equipments stored within said housing with supplying an air from an outside thereon, comprising:
a cooling system as described in the claim 1,
wherein said condenser building up said cooling system is disposed along a path of the air from the outside, which is supplied by said cooling fan.
11. The electronic apparatus, as described in the claim 10, wherein on said electronic printed circuit board are mounted plural numbers of semiconductor devices, and said cooling system for use of said electronic apparatus is provided for each of said semiconductor devices, respectively.
12. The electronic apparatus, as described in the claim 11, further comprising said cooling fans in plural numbers thereof, wherein a number of said cooling systems is less than a number of said fooling fans.
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 product supporting roller assembly comprising:
an elongate spine member; and
a plurality of rollers, each mounted on the spine member such that the rollers extend outwards on both sides of the spine member.
2. A product supporting roller assembly as claimed in claim 1, wherein the spine member comprises a plurality of holes, each configured to receive one or more rollers.
3. A product supporting roller assembly as claimed in claim 1 or 2, wherein each roller is mounted on the spine member by means of a bearing assembly comprising a plurality of roller bearings.
4. A product supporting roller assembly as claimed in claim 3, wherein the bearing assembly comprises a roller bearing housing configured to hold the plurality of roller bearings around an inner surface of each hole.
5. A product supporting roller assembly as claimed in claim 4, wherein each roller is configured to be mounted in rotating contact with the roller bearings.
6. A product supporting roller assembly as claimed in any one of claims 2-5, wherein each roller comprises an axle mounted through one of the holes in the spine member and two product supporting rollers mounted on each end of the axle.
7. A product supporting roller assembly as claimed in claim 6, wherein the roller bearings extend into recesses in the product support rollers such that rotation of the product supporting rollers causes the roller bearings to rotate around the inner surface of the holes.
8. A product supporting roller assembly as claimed in any one of the preceding claims, wherein each roller lies in substantially the same plane as an adjacent roller.
9. A product supporting roller assembly as claimed in claim 8, wherein all the rollers lie in the same plane to form a substantially flat rolling surface.
10. A product supporting roller assembly as claimed in any one of the preceding claims, wherein each roller is substantially parallel to an adjacent roller.
11. A product supporting roller assembly as claimed in claim 10, wherein all the rollers are
12. A product supporting roller assembly as claimed in any one of the preceding claims, wherein the rollers extend outwards from the spine member at right angles.
13. A product supporting roller assembly as claimed in any one of the preceding claims, wherein the rollers extend substantially the same distance outwards on either side of the spine member.
14. A product supporting roller assembly as claimed in any one of the preceding claims, wherein the spine member is configured to be mounted on a support portion, the support portion being adapted to be mounted on a shelf.
15. A product supporting roller assembly as claimed in any one of the preceding claims, wherein the spine member andor the support portion isare configured to connect to a front portion andor a back portion.
16. A product supporting roller assembly as claimed in claim 15, wherein the front portion comprises, or is connectable to, a barrier means, the barrier means acting to prevent product supported on the roller assembly from rolling off the front of the roller assembly.
17. A product supporting roller assembly as claimed in claim 15 or 16, wherein the front portion, back portion andor a shelf engagement portion of the product supporting roller assembly comprise one or more track engagement means for engaging to a track.
18. A product supporting roller assembly as claimed in any one of the preceding claims, wherein the spine member is formed from an extruded length of a material.
19. A product supporting roller assembly as claimed in any one of the preceding claims, wherein the spine member comprises first and second rows of holes, the first and second rows of holes having different spacings between holes.
20. A product holding unit comprising one or more product supporting roller assemblies according to any one of claims 1-19.
21. A product holding unit as claimed in claim 20, wherein the product supporting roller assemblies have a longitudinal axis inclined downwards from the rear of the unit to the front of the unit such that product supported on the roller assemblies travels under gravity towards the front of the unit.
22. A product holding unit as claimed in claim 20 or 21, wherein the unit comprises more than one roller assembly arranged adjacently to define a shelf surface.
23. A product holding unit as claimed in claim 22, wherein the product holding unit comprises one or more roller assembly receiving means arranged substantially horizontally in a substantially co-planar arrangement with the shelf surface, the roller assemblies being configured to be moveable along the roller assembly receiving means.
24. A product holding unit as claimed in claim 23, wherein the roller assembly receiving means comprises a track, the track comprising an engagement portion to couple with an engagement portion of the track engagement means.
25. A product holding unit as claimed in claim 23 or 24, wherein the holding unit comprises means for fixing the roller assemblies in position on the roller assembly receiving means.
26. A product holding unit as claimed in any one of claims 20-25, wherein the holding unit further comprises one or more barrier means for preventing product rolling off the front end of one or more of the roller assemblies.
27. A product holding unit as claimed in any one of claims 20-26, wherein the holding unit further comprises one or more dividers adapted to be mounted between two roller assemblies.
28. A product holding unit as claimed in claim 27, wherein one or more of the dividers comprise barrier means for preventing product rolling off the front end of one or more of the roller assemblies.
29. A product holding unit as claimed in claim 28, wherein two adjacent dividers combine to form a barrier means for preventing product supported between said adjacent dividers from rolling off the front end of one or more of the roller assemblies.
30. A method of assembling an axle bearing, the method comprising:
positioning a plurality of roller bearings and a roller bearing housing inside a hole, the roller bearings each being connected to a roller bearing holding means and the roller bearings being housed in the roller bearing housing;
positioning an axle through the roller bearing housing; and
disconnecting the roller bearings from the roller bearing holding means.
31. A method as claimed in claim 30, wherein the roller bearing housing comprises the roller bearing holding means such that the roller bearings are connected to the roller bearing housing.
32. A method as claimed in claim 30 or 31, wherein the method further comprises disconnecting the axle from the roller bearing housing, the axle initially being connected to the roller bearing housing.
33. A method as claimed in claim 30, wherein the roller bearing holding means comprises a disconnectable ring member.
34. A method as claimed in claim 33, wherein each of the roller bearings is attached at one end to the ring member in spaced apart relationship conforming to slots in the roller bearing housing adapted to receive the roller bearings.
35. A method as claimed in any one of claims 30-34, wherein the roller bearings are easily disconnectable from the roller bearing holding means andor the axle is easily disconnectable from the roller bearing housing.
36. A method as claimed in claim 35, wherein the step(s) of disconnecting two components of the axle bearing comprise snapping or fatiguing the two components apart.
37. A method of assembling a product supporting roller assembly comprising assembling, according to the method of any one of claims 30-36, a plurality of axle bearings in a spine member.
38. A method as claimed in claim 37, wherein the method further comprises inserting a product supporting roller on each end of each axle.
39. A product supporting roller assembly substantially as hereinbefore described with reference to any one of the embodiments shown in the figures.
40. A product holding unit substantially as hereinbefore described with reference to any one of the embodiments shown in the figures.
41. A method of assembling an axle bearing substantially as hereinbefore described with reference to any one of the embodiments shown in the figures.
42. A method of assembling a product supporting roller assembly substantially as hereinbefore described with reference to any one of the embodiments shown in the figures.