1. A heat exchanging tube comprising:
a flat tube main body having a predetermined length; and
a plurality of refrigerant passages extending in a tube longitudinal direction and arranged in a tube widthwise direction,
wherein the following relational equations (a) to (c) are satisfied:
W=6 to 18 mm\u2003\u2003(a),
AcAt\xd7100=50 to 70%\u2003\u2003(b) and
PL\xd7100=350 to 450%\u2003\u2003(c),
where \u201cW\u201d is a width of the tube main body, \u201cAc\u201d is a total cross-sectional area of the refrigerant passages, \u201cAt\u201d is a total cross-sectional area of the tube main body and the refrigerant passages, and \u201cL\u201d is an external perimeter of the tube main body and \u201cP\u201d is a total inner perimeter of the refrigerant passages.
2. The heat exchanging tube as recited in claim 1, wherein the following relational equation (d) is satisfied:
PW\xd7100=750 to 850%\u2003\u2003(d).
3. The heat exchanging tube as recited in claim 1, wherein the following relational equation (e) is satisfied:
NW=3 to 4\u2003\u2003(e),
where \u201cN\u201d is the number of refrigerant passages.
4. The heat exchanging tube as recited in claim 1, wherein the following relational equation is satisfied:
H=0.5 to 1.5 mm\u2003\u2003(f),
where \u201cH\u201d is a height of the tube main body.
5. The heat exchanging tube as recited in claim 1, wherein the following relational equation (g) is satisfied:
Ta=50 to 80 \u03bcm\u2003\u2003(g),
where \u201cTa\u201d is a thickness of the partitioning wall partitioning adjacent refrigerant passages in the tube main body.
6. The heat exchanging tube as recited in claim 1, wherein the following relational equation (h):
Tb=80 to 250 \u03bcm\u2003\u2003(h),
where \u201cTb\u201d is the thickness of the external peripheral wall in the tube main body.
7. The heat exchanging tube as recited in claim 1, wherein the refrigerant passage is approximately rectangular in cross-section.
8. The heat exchanging tube as recited in claim 1, wherein the width W of the tube main body is set to be 6 to 14 mm.
9. The heat exchanging tube as recited in claim 1, wherein the width W of the tube main body is set to be 7 to 12 mm.
10. The heat exchanging tube as recited in claim 1, wherein the following relational equation is satisfied:
AcAt\xd7100=55 to 65%.
11. The heat exchanging tube as recited in claim 1, wherein the following relational equation is satisfied:
PL\xd7100=360 to 420%.
12. A heat exchanger comprising:
a pair of headers; and
a plurality of heat exchanging tubes arranged in parallel in a header length direction, opposite ends of the heat exchanging tube being connected to the headers in fluid communication,
wherein the heat exchanging tube is provided with a flat tube main body having a predetermined length and a plurality of the refrigerant passages extending in a tube longitudinal direction and arranged in a tube widthwise direction, and the following relational equations (a) to (c) are satisfied:
W=6 to 18 mm\u2003\u2003(a),
AcAt\xd7100=50 to 70%\u2003\u2003(b) and
PL\xd7100=350 to 450%\u2003\u2003(c),
where \u201cW\u201d is a width of the tube main body, \u201cAc\u201d is a total cross-sectional area of the refrigerant passages, \u201cAt\u201d is a total cross-sectional area of the tube main body and the refrigerant passages, and \u201cL\u201d is an external perimeter of the tube main body and \u201cP\u201d is a total inner perimeter of the refrigerant passages.
13. The heat exchanger as recited in claim 12, wherein the width W of the tube main body is set to be 6 to 14 mm.
14. The heat exchanger as recited in claim 12, wherein the width W of the tube main body is set to be 7 to 12 mm.
15. The heat exchanger as recited in claim 12, wherein the following relational equation is satisfied:
AcAt\xd7100=55 to 65%.
16. The heat exchanger as recited in claim 12, wherein the following relational equation is satisfied:
PL\xd7100=360 to 420%.
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 sealing device for use in a xerographic printing apparatus, the printing apparatus including a photoreceptor and a housing disposed around a portion of the photoreceptor, the housing suitable for retaining marking material, comprising:
a cleaning blade disposed on a first member;
a flap disposed on a second member; and
a third member, connecting the first member to the second member;
the sealing device being readily removable in one piece from the housing.
2. The sealing device of claim 1, further cormprising
a seal disposed on the third member, the seal suitable for conforming to a portion of a surface of the photoreceptor.
3. The sealing device of claim 1, further comprising
a fourth member, the fourth member connecting the first member to the second member;
a seal disposed on the fourth member, the seal suitable for conforming to a portion of a surface of the photoreceptor.
4. The sealing device of claim 1, further comprising
an opening in the sealing device for attaching the sealing device to the housing by a screw.
5. The sealing device of claim 1, further comprising
a surface on the sealing device suitable for attaching the sealing device to the housing by an adhesive.
6. The sealing device of claim 1, wherein the sealing device is dimensioned to fit tightly in the housing.
7. The sealing device of claim 1, wherein the cleaning blade is more rigid than the flap.
8. The sealing device of claim 1, wherein the cleaning blade is oriented in a first direction, and the flap is oriented in the first direction near the device and is flexible near an end thereof to flex in a second direction opposite the first direction.
9. A module which is readily installable in a xerographic printing apparatus, comprising
a photoreceptor;
a housing disposed around a portion of the photoreceptor, the housing suitable for retaining marking material; and
a sealing device, the sealing device including a cleaning blade disposed on a first member, a flap disposed on a second member, and a third member connecting the first member to the second member;
the sealing device being readily removable in one piece from the housing.
10. The module of claim 9, the sealing device further including
a seal disposed on the third member, the seal including a seal member suitable for conforming to a portion of a surface of the photoreceptor.
11. The module of claim 9, the sealing device further including
a fourth member, the fourth member connecting the first member to the second member, and a seal disposed on the fourth member, suitable for conforming to a second portion of a surface of the photoreceptor.
12. The module of claim 9, the sealing device further including an opening for attaching the sealing device to the housing by a screw.
13. The module of claim 9, the sealing device further including
a surface suitable for attaching the sealing device to the housing by an adhesive.
14. The module of claim 9, wherein the sealing device is dimensioned to fit tightly in the housing.
15. The module of claim 9, wherein the cleaning blade is more rigid than the flap.
16. The module of claim 9, wherein the cleaning blade is oriented against a direction of rotation of the photoreceptor.
17. The module of claim 9, wherein the flap is oriented against a direction of rotation of the photoreceptor the device and is flexible near an end thereof to flex with the direction of rotation of the photoreceptor.
18. A method of remanufacturing a module for use in a xerographic printing apparatus, the module including
a photoreceptor,
a housing disposed around a portion of the photoreceptor; the housing suitable for retaining marking material, and
a sealing device disposed between the housing and the photoreceptor, the sealing device including a cleaning blade disposed on a first member, a flap disposed on a second member, and a third member connecting the first member to the second member;
the method comprising
removing the sealing device in one piece from the module.
19. The method of claim 18, the removing step including loosening a screw attaching the sealing device from the module.
20. The method of claim 18, the removing step including loosening an adhesive attaching the sealing device from the module.
21. The method of claim 18, the sealing device further including
a seal disposed on the third member, the seal including a seal member suitable for conforming to a portion of a surface of the photoreceptor.
22. The method of claim 18, wherein, in the sealing device, the cleaning blade is more rigid than the flap.
23. The method of claim 18, wherein, in the sealing device, the cleaning blade is oriented against a direction of rotation of the photoreceptor.
24. The method of claim 18, wherein, in the sealing device, the flap is oriented against a direction of rotation of the photoreceptor the device and is flexible near an end thereof to flex with the direction of rotation of the photoreceptor.
25. The method of claim 18, the sealing device further including
a fourth member, the fourth member connecting the first member to the second member, and
a seal disposed on the fourth member, the seal suitable for conforming to a second portion of a surface of the photoreceptor.
26. The method of claim 18, further comprising placing a new sealing device in the module.