U.S. patent application number 09/788217 was filed with the patent office on 2001-08-23 for compressor part to be formed with film and method of forming film on the same part.
Invention is credited to Isomura, Naohiko, Iwama, Kazuaki, Kawachi, Shigeki, Kayukawa, Hiroaki, Sugiura, Manabu.
Application Number | 20010015130 09/788217 |
Document ID | / |
Family ID | 18567432 |
Filed Date | 2001-08-23 |
United States Patent
Application |
20010015130 |
Kind Code |
A1 |
Sugiura, Manabu ; et
al. |
August 23, 2001 |
Compressor part to be formed with film and method of forming film
on the same part
Abstract
A film forming method for a compressor and a part of the
compressor to be formed with a film are disclosed. A paint
container (36) is arranged above a rotary holding mechanism (34)
with a swash plate (15) of the compressor mounted thereon. A
lubrication paint (37) in the paint container (36) is dripped on
the end surface (152) of the swash plate (15) through a dripping
unit (38). The swash plate (15) is rotated at high speed by the
operation of a motor (M) so that the surplus portion of the
lubrication paint (37) on the end surface (152) is removed by
centrifugal force. The lubrication paint (37) remaining on the end
surface (152) with the surplus portion thereof removed by
centrifugal force has a uniform film thickness.
Inventors: |
Sugiura, Manabu;
(Kariya-shi, JP) ; Iwama, Kazuaki; (Kariya-shi,
JP) ; Isomura, Naohiko; (Kariya-shi, JP) ;
Kawachi, Shigeki; (Kariya-shi, JP) ; Kayukawa,
Hiroaki; (Kariya-shi, JP) |
Correspondence
Address: |
Woodcock Washburn Kurtz Mackiewicz & Norris LLP
One Liberty place, 46th Floor
Philadelphia
PA
19103
US
|
Family ID: |
18567432 |
Appl. No.: |
09/788217 |
Filed: |
February 19, 2001 |
Current U.S.
Class: |
92/71 ;
92/155 |
Current CPC
Class: |
F05C 2253/12 20130101;
F04B 27/1063 20130101; F04B 27/1054 20130101 |
Class at
Publication: |
92/71 ;
92/155 |
International
Class: |
F01B 003/00; F01B
031/10 |
Foreign Application Data
Date |
Code |
Application Number |
Feb 22, 2000 |
JP |
2000-044714 |
Claims
1. A film forming method, for a part of a compressor to be formed
with a film by attaching a fluid paint to a film forming area,
comprising the steps of: attaching said fluid paint to said film
forming area; and removing by centrifugal force the surplus portion
of said fluid paint attached to said film forming area thereby to
form said film.
2. A film forming method for a part of a compressor to be formed
with a film according to claim 1, wherein said paint is a resin
containing a solid lubricant.
3. A film forming method for a part of a compressor to be formed
with a film according to claim 1, comprising the step of forming a
film by dripping and attaching said paint on said film forming
area.
4. A film forming method for a part of a compressor to be formed
with a film according to claim 2, comprising the step of forming a
film by dripping and attaching said paint on said film forming
area.
5. A film forming method for a part of a compressor to be formed
with a film according claim 1, comprising the step of spreading
said paint on the flat surface of said film forming area due to the
centrifugal force.
6. A part of a compressor to be formed with a film in a film
forming area, wherein said film is formed according to the method
described in any one of claims 1 to 5.
7. A part of a compressor to be formed with a film according to
claim 6, wherein said compressor is a swash plate compressor having
at least a shoe interposed between a piston and a swash plate
integrally rotated with a rotary shaft in such a manner that the
shoe is in sliding contact with both said swash plate and said
piston, the rotation of said swash plate is transmitted to said
piston through said shoe thereby to reciprocate said piston, said
part to be formed with a film is said swash plate, and the slide
contact area of said swash plate in sliding contact with said shoe
constitutes said film forming area.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a part of a compressor to
be formed with a film and a method of forming the film on the
part.
[0003] 2. Description of the Related Art
[0004] A method of coating a paint for lubrication on a part, such
as the swash plate or the piston of a compressor, to be formed with
a film is disclosed in Japanese Unexamined Patent Publications
(Kokai) Nos. 10-26081 and 11-173263.
[0005] In the roll coating method disclosed in Kokai No. 10-26081,
a paint is attached on the peripheral surface of a metal roller and
then transferred to the peripheral surface of a rubber roller, and
the paint transferred to the peripheral surface of the rubber
roller is coated on the part to be formed with a film. The metal
roller and the rubber roller are in sliding contact with each
other, and so are the rubber roller and the part to be formed with
a film. The paint attached on the metal roller is reduced to a
predetermined thickness by being passed between a comma roller and
the metal roller before being transferred to the rubber roller.
[0006] In the pad system disclosed in Kokai No. 11-173263, on the
other hand, a paint of a predetermined thickness and a
predetermined shape prepared on an intaglio plate is transferred to
a pad and the paint thus transferred to the pad is printed on the
part to be formed with a film.
[0007] According to the coating method disclosed in Kokai No.
10-26081, particle, if caught in the gap between the comma roller
and the metal roller, generates a streak on the paint film that has
passed between the comma roller and the metal roller. This streak
is transferred also to the film formed by being coated on the part
to be formed with a film thereby to deteriorate the quality of the
film. Unless the particle is removed, the streak is generated on
all the films subsequently formed on the part to be formed with the
film.
[0008] According to the coating method disclosed in Kokai No.
11-173263, the film is liable to be wrinkled by the ununiform
deformation of the pad. In the case where the surface of the pad
pressed against the part to be formed with a film is flat, the air
may be sealed in and make it impossible to form a satisfactory
film. In the case where the surface of the pad pressed against the
part to be formed is convex to avoid the air being sealed in, on
the other hand, the force of pressing the pad against the part to
be formed with a film increases toward the center of the particular
surface of the pad, thereby making an ununiform film thickness.
Therefore, the film must be ground, for adjusting the thickness,
after being dried and baked.
SUMMARY OF THE INVENTION
[0009] The object of the present invention is to form a film of
high quality on a part of the compressor to be formed with the
film.
[0010] To achieve this object, according to one aspect of the
invention, there is provided a film forming method for forming a
film by attaching a fluid paint on a film forming area, comprising
the steps of attaching the fluid paint to the film forming area,
and removing by centrifugal force the surplus portion of the fluid
paint attached on the film forming area.
[0011] The method for removing the surplus portion of the paint by
centrifugal force is effective for securing a uniform film
thickness.
[0012] According to another aspect of the invention, there is
provided a film forming method in which the paint is a resin
containing a solid lubricant.
[0013] The resin containing a solid lubricant effectively forms a
film for an improved slidability.
[0014] According to further another aspect of the invention, there
is provided a film forming method, comprising further the step of
spreading said paint on the flat surface of the film forming area
due to the centrifugal force.
[0015] According to still another aspect of the invention, there is
provided a film forming method described in the aforementioned
first or second aspect, in which a film is formed on the film
forming area of a part of the compressor to be formed with a
film.
[0016] The film formed by removing the surplus portion of the paint
by centrifugal force has a uniform thickness.
[0017] According to yet another aspect of the invention, there is
provided a film forming method for the compressor of swash plate
type comprising a piston and a swash plate rotated integrally with
the rotary shaft, wherein at least a shoe is interposed between the
swash plate and the piston in such a manner as to be in sliding
contact with both the swash plate and the piston, wherein the
rotation of the swash plate is transmitted to the piston through
the shoe thereby to reciprocate the piston, and wherein the part to
be formed with a film is the swash plate and the area of the swash
plate in sliding contact with the shoe constitutes the film forming
area.
[0018] The area of the swash plate in sliding contact with the shoe
preferably constitutes a film forming area by removing the surplus
portion of the paint by centrifugal force.
[0019] The present invention will be more fully understood with
reference to the accompanying drawings and the preferred
embodiments of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0020] FIG. 1A is a side sectional view of the whole compressor
formed with a film according to a first embodiment of the
invention, and FIG. 1B an enlarged side sectional view of the
essential parts thereof.
[0021] FIG. 2A is a sectional view of a film forming unit, and FIG.
2B is a plan view showing the manner in which the paint is dripped
on an end surface 152 of a swash plate 15.
[0022] FIG. 3A is a sectional view of the paint film remaining on
the end surface 152 after the removing operation by centrifugal
force, and FIG. 3B is a front view of the paint film remaining on
the end surface 152.
[0023] FIG. 4 is a sectional view of a film forming unit according
to a second embodiment of the invention.
[0024] FIG. 5 is a sectional view showing the manner in which a
coating roller 47 is pressed against the swash plate 15.
[0025] FIG. 6A is a plan view showing the manner in which the paint
is coated on the swash plate 15, and FIG. 6B is a plan view showing
a paint film 374 with the surplus portion thereof removed by
centrifugal force.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0026] A first embodiment of the invention will be explained below
with reference to FIGS. 1A to 3.
[0027] FIG. 1A shows the internal structure of variable
displacement refrigerant compressor. A rotary shaft 13 is supported
on a front housing 12 and a cylinder block 11 forming a control
pressure chamber 121. The rotary shaft 13 is driven by an external
drive source (such as a vehicle engine). A rotary support member 14
is fixedly mounted on the rotary shaft 13, and a swash plate 15 is
slidably and inclinably supported along the axis of the rotary
shaft 13. The swash plate 15 of iron material is formed integrally
with a support member 151 on which a guide pin 16 is secured. The
guide pin 16 is slidably fitted in a guide hole 141 formed in the
rotary support member 14. The swash plate 15 is rotatable
integrally with the rotary shaft 13 and inclinably along the axis
of the rotary shaft 13 in collaboration between the guide hole 141
and the guide pin 16. The inclination of the swash plate 15 is
guided by the slide guide relation between the guide hole 141 and
the guide pin 16 on the one hand and the sliding support function
of the rotary shaft 13 on the other.
[0028] The inclination angle of the swash plate 15 can be changed
by controlling the internal pressure of the control pressure
chamber 12. With the increase in the internal pressure of the
control pressure chamber 121, the inclination angle of the swash
plate 15 decreases, and vice versa. The refrigerant in the control
pressure chamber 121 flows out to a suction chamber 191 in a rear
housing 19 through a discharge passage not shown, and the
refrigerant in a discharge chamber 192 in the rear housing 19 is
adapted to be supplied to the control pressure chamber 121 through
a pressure supply passage not shown. A replacement control valve 25
is interposed on the pressure supply passage, so that the flow rate
of the refrigerant supplied from the discharge chamber 192 to the
control pressure chamber 121 is controlled by a replacement control
valve 25. With the increase in the flow rate of the refrigerant
supplied from the discharge chamber 192 to the control pressure
chamber 121, the internal pressure of the control pressure chamber
121 increases, and vice versa. In this way, the inclination angle
of the swash plate 15 is controlled by the replacement control
valve 25.
[0029] The maximum inclination angle of the swash plate 15 is
defined by the contact between the swash plate 15 and the rotary
support member 14. The minimum inclination angle of the swash plate
15, on the other hand, is defined by the contact between the swash
plate 15 and a snap ring 24 on the rotary shaft 13.
[0030] In the cylinder block 11, a plurality of cylinder bores 111
(only two are shown in FIG. 1A) are arranged around the rotary
shaft 13. Each cylinder bore 111 contains a piston 17. In FIG. 1A,
the upper piston 17 is located at the top dead center and the lower
piston 17 at the bottom dead center. The motion of the swash plate
15 rotated integrally with the rotary shaft 13 is transformed into
the longitudinal reciprocal motion of the piston 17 through
hemispherical shoes 18A, 18B, so that the piston 17 reciprocates
longitudinally in the cylinder bore 111. The shoe 18A of iron
material is in sliding contact with one sliding contact surface 30
of the swash plate 15 and the shoe 18B of iron material is in
sliding contact with the other sliding contact surface 31 of the
swash plate 15.
[0031] As the result of the return motion (from right to left in
FIG. 1A) of the piston 17, the refrigerant in the suction chamber
191 flows into the cylinder bore 111 by forcibly pushing off a
suction valve 211 on a valve forming plate 21 from a suction port
201 on the valve plate 20. As the result of the ongoing motion
(left to right in FIG. 1A) of the piston 17, on the other hand, the
refrigerant that has flowed into the cylinder bore 111 is
discharged into a discharge chamber 192 by forcibly pushing off a
discharge valve 221 on a valve forming plate 22 from a discharge
port 202 on the valve plate 20. The opening degree of the discharge
valve 221 is controlled by contact with a retainer 231 on a
retainer forming plate 23.
[0032] The discharge chamber 192 and the suction chamber 191 are
connected to each other through an external refrigerant circuit 26.
The refrigerant that has flowed out from the discharge chamber 192
to an external refrigerant circuit 26 recirculates into the suction
chamber 191 through a condenser 27, an expansion valve 28 and an
evaporator 29.
[0033] A holding portion 171 is formed on the piston 17 and has
formed thereon a pair of spherical recesses 172, 173. As shown in
FIG. 1B, the shoe 18A in sliding contact with the sliding contact
surface 30 of the swash plate 15 is held unremovably in the recess
172, and the shoe 18B in sliding contact with the other sliding
contact surface 31 of the swash plate 15 is held unremovably on the
recess 173. The end surfaces 152, 153 making up the film forming
area are formed with films 32, 33, respectively. The surface of the
film 32 constitutes the sliding contact surface 30, and the surface
of the film 33 makes up the sliding contact surface 31.
[0034] The films 32, 33 are formed by use of a film forming unit
shown in FIG. 2A. The swash plate 15 is mounted on a rotary holding
mechanism 34 rotated in the direction of arrow Q1 by a motor M. A
receptacle 35 is arranged around the rotary holding mechanism 34. A
paint container 36 is arranged above the rotary holding mechanism
34. A fluid lubrication paint 37 is contained in the paint
container 36. The lubrication paint 37 includes a thermosetting
resin and a solid lubricant such as molybdenum disulfide, tungsten
disulfide and graphite. A dripping unit 38 is mounted on the bottom
wall of the paint container 36. The dripping unit 38 can be
switched between the supply mode for allowing the lubrication paint
37 to drip from within the paint container 36 and the stationary
mode for not allowing the lubrication paint 37 to drip from within
the paint container 36.
[0035] After the swash plate 15 is mounted on the rotary holding
mechanism 34 in the state shown in FIG. 2A, the dripping unit 38 is
switched to the supply mode while at the same time rotating the
motor M at a speed as low as 10 rpm, for example. The lubrication
paint 37 in the paint container 36 drips on the end surface 152 of
the swash plate 15 rotating at low speed, so that the fluid
lubrication paint 37 sequentially attaches along the peripheral
direction of the end surface 152 as shown by hatching in FIG.
2B.
[0036] Once the lubrication paint 37 has been dripped over the
entire periphery of the end surface 152, the dripping unit 38 stops
while at the same time the motor M is rotated at high speed. A part
of the lubrication paint 37 attached on the end surface 152 is
removed from the end surface 152 by the centrifugal force due to
the high-speed rotation of the swash plate 15. The lubrication
paint 37 that has been removed from the end surface 152 by the
centrifugal force is pooled in the receptacle 35. FIGS. 3A, 3B show
the coating film 372 of the lubrication paint remaining on the end
surface 152.
[0037] The coating film 372 of the lubrication paint remaining on
the end surface 152 is dried. After the coating film on the end
surface 152 is dried, the swash plate 15 is mounted on the rotary
holding mechanism 34 with the end surface 153 directed up. Then,
the lubrication paint 37 is dripped on the end surface 153, and a
part of the lubrication paint 37 attached on the end surface 153 is
removed by centrifugal force. After the coating film on the end
surface 153 is dried, the coating film 372 on the end surface 152
and the coating film on the end surface 153 become films 32, 33,
respectively, through the baking process.
[0038] According to the first embodiment, the following advantages
are obtained.
[0039] (1-1) The lubrication paint 371 attached on the end surfaces
152, 153 has a uniform film thickness due to the centrifugal force
of the high-speed rotation of the swash plate 15. Also, the amount
of the lubrication paint 371 removed from the end surfaces 152, 153
by the centrifugal force of the high-speed rotation of the swash
plate 15 can be adjusted according to the conditions including the
rotational speed of the swash plate 15, the rotation time of the
swash plate 15, the viscosity of the lubrication paint 37 and the
surface tension of the lubrication paint 37. The method of removing
the surplus portion of the lubrication paint 371 by the centrifugal
force is effective for securing the desired uniform thickness of
the films 32, 33.
[0040] (1-2) In the case where the thickness of the coating film
372 before being dried is set in advance by taking the change of
the film thickness due to the drying and baking of the coating film
372 into account, the surfaces of the films 32, 33 need not be
polished to adjust the film thickness.
[0041] (1-3) The method in which the lubrication paint 37 is
dripped on the end surfaces 152, 153 is convenient for attaching
the lubrication paint 37 on the end surfaces 152, 153.
[0042] (1-4) The resin containing the solid lubricant is
advantageous for forming the films 32, 33 with an improved
slidability.
[0043] (1-5) The end surfaces 152, 153 of the swash plate 15 are
flat, and the swash plate 15 is rotated at high speed without
changing the position of the flat surfaces. The fluid lubrication
paint 371 on the flat surfaces fixed in position is liable to
spread uniformly on the flat surfaces due to the centrifugal force.
Also, the end surfaces 152, 153 are comparatively distant from the
rotation center L of the swash plate 15 indicated in FIG. 3A, and
the distance between an arbitrary position on each of the end
surfaces 152, 153 and the rotation center L is substantially the
same. As a result, the lubrication paint 371 at an arbitrary
position on the end surfaces 152, 153 receives a comparatively
uniform centrifugal force. The lubrication paint 371 on the end
surfaces 152, 153 which receives a comparatively uniform
centrifugal force is spread to a uniform thickness. Thus, the end
surfaces 152, 153 constituting the sliding contact area of the
swash plate 15 in sliding contact with the shoes 18A, 18b suitably
constitute areas for forming the films 32, 33 by removing the
surplus portion of the lubrication paint 371 due to the centrifugal
force.
[0044] Now, a second embodiment of the invention will be explained
with reference to FIGS. 4 to 6B. The same component parts as the
corresponding ones of the first embodiment are designated by the
same reference numerals, respectively.
[0045] As shown in FIG. 4, a first drive unit 42 and a second drive
unit 43 are assembled on a base frame 41. An intaglio 44 arranged
horizontally is driven reciprocally by the first drive unit 42. A
paint container 45 is arranged just above the intaglio 44. The
paint container 45 contains the lubrication paint 37. The intaglio
44 is reciprocated horizontally at a position of predetermined
height in sliding contact with the lower end of the paint container
45. The intaglio 44 thus is reciprocated between the paint supply
position shown in FIG. 4 and the paint ready position shown in FIG.
5. A band-shaped holding groove 441 is recessed on the upper
surface of the intaglio 44. As long as the intaglio 44 is located
at the paint ready position, the holding groove 441 is located just
under the paint container 45. When the intaglio 44 is located at
the paint supply position, on the other hand, the holding groove
441 is located at a paint preparation position S off the position
just under the paint container 45. In the case where the intaglio
44 is relocated from the paint ready position to the paint supply
position, a part of the paint in the paint container 45 is filled
in the holding groove 441.
[0046] A support base plate 40 is fixedly secured at the lower end
of a support shaft 39 movable both vertically and horizontally by
the second drive unit 43. A motor 46 is mounted on the lower
surface of the support base plate 40. A coating roller 47 of rubber
is securely fixed on the output shaft 461 of the motor 46. A motor
M and a rotary holding mechanism 34 are arranged on the extension
of the intaglio 44. The swash plate 15 is mounted on the rotary
holding mechanism 34.
[0047] As shown in FIG. 6A, the width of the coating roller 47 is
approximately equal to the width of the end surface 152 of the
swash plate 15.
[0048] As shown in FIG. 4, the coating roller 47 is moved along the
arrows r1, r2, r3 in that order by the operation of the second
drive unit 43. In the process of travel as indicated by arrow r2,
the coating roller 47 rotates in the direction along arrow Q2 at
the same peripheral speed as the travel speed of the coating roller
47, so that the lubrication paint 373 prepared in the holding
groove 441 is transferred to the peripheral surface of the coating
roller 47. The coating roller 47 is rotated in sliding contact with
the intaglio 44 in such a manner that the side (lower side in the
drawing) of the coating roller 47 pressed against the intaglio 44
is moved in advance in the same direction as the travel direction
of the coating roller 47. As shown in FIG. 5, the coating roller 47
with the coating film 374 attached thereon is moved along arrows
r4, r5, r6, r7 in that order by the operation of the second drive
unit 43. As long as the coating roller 47 is pressed against the
swash plate 15, the coating roller 47 rotates in the direction
indicated by arrow Q3, so that the coating film 374 attached on the
peripheral surface of the coating roller 47 is transferred to the
end surface 152 of the swash plate 15. The rotational speed at the
transverse center of the end surface 152 is equal to the peripheral
speed of the coating roller 47.
[0049] The coating roller 47 comes into sliding contact with the
swash plate 15 by rotating in such a manner that the side (the
lower side in FIG. 5) of the coating roller 47 pressed against the
swash plate 15 moves in advance in the same direction as that of
the relative motion of the coating roller 47. The coating film 374
on the coating roller 47 is transferred to the end surface 152 as
the coating roller 47 comes into sliding contact with the swash
plate 15.
[0050] After transfer of the coating film 374 to the swash plate
15, the swash plate 15 rotates at high speed with the high-speed
rotation of the motor M thereby to remove the surplus portion of
the coating film 374 on the swash plate 15. FIG. 6B shows the
coating film 374 after removal of the surplus portion thereof by
the centrifugal force. A similar coating film is formed also on the
end surface 153. Once the coating film is dried and baked, the
films 32, 33 are obtained.
[0051] The second embodiment has the following advantages.
[0052] (2-1) The operation by which the coating roller 47 is
brought into sliding contact with the intaglio 44 at the same
peripheral speed as the travel speed of the coating roller 47
causes the lubrication paint 373 of uniform thickness in the
holding groove 441 to be transferred to the peripheral surface of
the coating roller 47 with a uniform thickness. The coating
operation in which the coating roller 47 is rotated with respect to
the swash plate 15 at the same peripheral speed as the travel speed
of the coating roller 47 causes the coating film 374 formed in a
uniform thickness on the peripheral surface of the coating roller
47 to be transferred to the swash plate 15 with a uniform
thickness. Thus, the coating film 374 applied on the swash plate 15
has a uniform thickness. The coating film 374 having a uniform
thickness is advantageous for securing a uniform thickness by
removing the surplus portion by the centrifugal force.
[0053] (2-2) The coating roller 47 comes off from the intaglio 44
and the swash plate 15 at each coating session. Even in the case
where particle attaches to the coating roller 47 while the paint is
being applied to the coating roller 47 or particle attaches to the
coating roller 47 while the swash plate 15 is being coated,
therefore, the particular particle is not continuously attached to
the coating roller 47. As a result, all of the films 32, 33 on the
swash plates 15 are not damaged after particle is attached
thereto.
[0054] The present invention may be additionally embodied in the
following ways.
[0055] (1) With the piston 17 as a part to be formed with a film,
the peripheral surface of the piston 17 in sliding contact with the
peripheral surface of the cylinder bore 111 is defined as a film
forming area.
[0056] (2) A fluid paint is attached to the film forming area of
the part to be formed with a film, by the roll coating method
disclosed in Kokai No. 10-26081, and then the surplus portion of
the paint in the film forming area is removed by centrifugal
force.
[0057] (3) A fluid paint is attached to the film forming area of
the part to be formed with a film, by the pad method disclosed in
Kokai No. 11-173263, and then the surplus portion of the paint in
the film forming area is removed by centrifugal force.
[0058] (4) A fluid paint is attached to the film forming area of
the part to be formed with a film, by the spray method, and then
the surplus portion of the paint in the film forming area is
removed by centrifugal force.
[0059] (5) A fluid paint is attached to the film forming area of
the part to be formed with a film, by the dipping method, and then
the extraneous portion of the paint in the film forming area is
removed by centrifugal force.
[0060] (6) As disclosed in Kokai No. 11-193780, a metal slide
contact layer having a superior slidability is formed on the base
surface of a part to be formed with a film in the film forming
area, and a film according to the invention is formed on the slide
contact layer. The film provides a protective film for the slide
contact layer.
[0061] (7) A fluid paint is attached to a part of a film forming
area of a part to be formed with a film, and then the part to be
formed with a film is rotated thereby to spread the paint over the
entire film forming area by centrifugal force. Further, the surplus
portion of the paint in the film forming area may be removed by the
centrifugal force.
[0062] As described in detail above, according to the present
invention, a fluid paint is attached to a film forming area of a
part to be formed with a film, and the surplus portion of the fluid
paint attached to the film forming area is removed by centrifugal
force thereby to form a film. Therefore, the invention has a great
advantage that a film of high quality can be formed on a part of
the compressor to be formed with a film.
[0063] While the invention has been described by reference to
specific embodiments chosen for purposes of illustration, it should
be apparent that numerous modifications could be made thereto by
those skilled in the art without departing from the basic concept
and scope of the invention.
* * * * *