U.S. patent application number 09/996411 was filed with the patent office on 2003-05-22 for compressor fixed turbine assembly structure.
Invention is credited to Chang, Lung-Tsai, Yeh, Mu-Ching.
Application Number | 20030095884 09/996411 |
Document ID | / |
Family ID | 25542882 |
Filed Date | 2003-05-22 |
United States Patent
Application |
20030095884 |
Kind Code |
A1 |
Chang, Lung-Tsai ; et
al. |
May 22, 2003 |
COMPRESSOR FIXED TURBINE ASSEMBLY STRUCTURE
Abstract
An improved structure for a fixed turbine assembly in a
compressor by having provided in the inner edge of a fixation block
vertically disposed on the housing, a corresponding second channel
in the outer edge of the fixed turbine, and a retainer
simultaneously inserted between both channels to restrain and form
a link for the fixed turbine and the housing thus to secure the
fixed turbine and present it from turning.
Inventors: |
Chang, Lung-Tsai; (Hsinchu
city, TW) ; Yeh, Mu-Ching; (Pingjen City,
TW) |
Correspondence
Address: |
Keith Kline
PRO-TECHTOR INTERNATIONAL SERVICES
20775 Norada Court
Saratoga
CA
95070-3018
US
|
Family ID: |
25542882 |
Appl. No.: |
09/996411 |
Filed: |
November 19, 2001 |
Current U.S.
Class: |
418/55.1 |
Current CPC
Class: |
F04C 18/0215
20130101 |
Class at
Publication: |
418/55.1 |
International
Class: |
F04C 018/04 |
Claims
I claim:
1. An improved structure of a fixed turbine assembly in a
compressor essentially comprised of a positioning structure applied
to link between the fixed turbine and a housing inside the
compressor to prevent the fixed turbine from turning together with
a circulating turbine when the compressor is operation; within, the
fixed turbine being placed above the housing and attached to the
circulating turbine disposed over the center of the housing, a pair
of fixation blocks vertically provided in the outer circumference
of the housing to restrain the outer edge of the fixed turbine to
form a link section between the housing and the fixed turbine,
characterized by: A first channel being formed in the inner edge of
the fixation block, a corresponding second channel being formed in
the outer edge of the fixed turbine, and a retainer inserted
between the first and the second channels to restrain and link the
fixed turbine and the fixation block from the housing to secure the
fixed turbine and prevent it from turning: An improved structure of
a fixed turbine assembly in a compressor as claimed in claim 1,
wherein, the section for the retainer to be engaged with the second
channel is reduced to increase assembly convenience between the
retainer and the fixed turbine.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to an improved fixed turbine
assembly structure in a compressor, and more particularly, to one
that effectively reduce deformation due to knocking and is better
subject to shear than a positioning pin does.
[0003] 2. Description of the Prior Art
[0004] A general turbo-compressor generally available in the market
is essentially comprised of a circulating turbine, a fixed turbine,
a separator and a housing. Within, an upper closed space and a
lower closed space inside the compressor respectively form a
low-pressure chamber and a high-pressure chamber by the separator.
A coolant inlet and a coolant outlet are respectively provided to
one side of the LP and the HP chambers. A fixed turbine and a
circulating turbine are provided below the separator. The
circulating turbine activated by a drive unit revolves around
inside the fixed turbine instead of rotating on its own axis to
vary space of the fixed turbine in relation to that of the
circulating turbine, thus to suck and compress the coolant entering
into the LP chamber. The volume of the coolant is changed to
execute heat exchange in cycle between a coolant pipe and the
compressor.
[0005] Whereas the circulating turbine and the fixed turbine are
both operating at high speed, a sufficient stability is required by
contact between both of said turbines while the fixed turbine is
expected to give highly secured positioning purpose. Therefore, a
positioning structure is provided between the fixed turbine and the
housing to secure the fixed turbine onto the housing without being
affected by the operation of the circulating turbine. FIG. 1 of the
accompanying drawings of the present invention is a schematic view
showing the positioning structure provided between a fixed turbine
(A3) and a housing (A1) inside a compressor (A) of the prior art. A
circulating turbine (A2) is disposed above the center of the
housing (A1) and a pair of fixation blocks (A11) to restrain the
outer edge of the fixed turbine (A3) are vertically provided to the
outer circumference of the housing (A1). A positioning hole is
respectively provided to the fixation block (A11) and the outer
edge of the fixed turbine (A3) where both of the housing (A1) and
the fixation block (A11) are abutted. A positioning pin (A4) is
laterally inserted into where between said two positioning holes to
form a limiting structure between the housing (A1) and the fixed
turbine (A3) to restrain the rotation of the fixed turbine (A3).
However, in the manufacturing process, it is very difficult in the
process itself, especially, in lateral insertion of the positioning
pin. The reason is that an indexing plate is required to rotate the
positioning hole to complete two rounds of drilling work, making it
difficult to align the central lines of both positioning holes,
resulting in poor quality control and higher NG percentage.
[0006] As illustrated in FIG. 2 showing another prior art of the
present invention, a fixation block A11') is laterally provided. A
section substantially in the form of an ear laterally formed in
relation to a outer edge of a fixed turbine (A3') is attached to
the fixation block (A11'). A positioning pin (A4') is then
longitudinally inserted and secured between the fixed turbine (A3')
and the fixation block (A11') from the housing. Whereas the
positioning pin (A4') has to pass one positioning hole, then is
knocked into another positioning hole, precision of parts is
damaged and the contact area between the positioning hole and the
positioning pin is deformed under the pressurized stress created by
the knocking. The positioning pin even breaks up for being
frequently subject to shear in radius, thus fails to secure the
fixed turbine in position.
SUMMARY OF THE INVENTION
[0007] The primary purpose of the present invention is to provide
an improved structure for a fixed turbine assembly in a compressor.
Wherein, a first channel is formed in the inner edge of a fixation
block vertically provided on the housing, and a corresponding
second channel is provided in the outer edge of a fixed turbine for
a retainer to be inserted into both channels. The retainer
functions to restrain the link between the fixed turbine and the
fixation block from the housing, so to hold the fixed turbine in
position.
[0008] Another purpose of the present invention is to provide an
improved structure for a fixed turbine assembly in a compressor. To
minimize potential distortion of precision or deformation due to
knocking during the process, the retainer is inserted into the
first and the second channels respectively in the inner edge of the
fixation block and in the outer edge of the fixed turbine to
simultaneously secure the retainer and both channels.
[0009] Another purpose of the present invention is to provide an
improved structure for a fixed turbine assembly in a compressor.
Wherein, a fast link between the fixed turbine and the housing is
achieved by having the retainer inserted between the first and the
second channels respectively from the inner edge of the fixation
block and the outer edge of the fixed turbine to hold both of the
fixation block and the fixed turbine in place, and to form a
structure which is better capable of withstanding the shear thus to
help hold the fixed turbine in position and improve its
workability.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] FIG. 1 is a schematic view showing a structure of a turbine
compressor of the prior art;
[0011] FIG. 2 is a schematic view showing another structure of a
turbine compressor of the prior art;
[0012] FIG. 3 is an exploded view of a preferred embodiment of the
present invention;
[0013] FIG. 4 is a sectional view of an insertion structure between
a retainer and a fixation block of the preferred embodiment of the
present invention; and
[0014] FIG. 5 is an exploded view of another preferred embodiment
of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0015] An improved structure for a fixed turbine assembly in a
compressor of the present invention is essentially related to a
positioning link between a fixed turbine and a housing inside the
compressor to prevent the fixed turbine from turning together with
the circulating turbine when the compressor is operating. As
illustrated in FIG. 3, the fixed turbine (2) is placed above the
housing (A1) to be engaged with a circulating turbine (A2) disposed
on the center of the housing (A1). A fixation block (1) is
vertically provided on the outer circumference of the housing (A1)
to restrain the outer edge of the fixed turbine (2) to form a
section for linking the housing (A1) and the fixed turbine (2).
[0016] Referring to FIGS. 3 and 5, a first channel (11) is
vertically provided in the inner edge of the fixation block (1) and
a corresponding second channel (21) is provided in the outer edge
of the fixed turbine (2). A retainer (3) simultaneously inserted
into the first and the second channels (11, 21) to restrain and to
form a link between the fixed turbine (2) and the fixation block
(1) on the housing (A1). The fixed turbine (2) is fast held in
position and prevented from turning. Since the retainer (3) is
vertically inserted into the same vertically disposed first and
second channels (11, 21) and subject to axial sheath, it is more
capable of withstanding the sheath. Furthermore, the retainer (3)
permits a reduced section required to engaged with the second
channel (21); in turn, it improves the assembly convenience between
the retainer (3) and the fixed turbine (2) while maintaining
sufficient support strength.
[0017] As illustrated in FIG. 5, the retainer (3) is made in the
form with its insertion section identical to the first and the
second channels (11, 21) to maintain optimal structure strength.
Upon assembling the fixed turbine (2) and the fixation block (1)
from the housing (A1), the retainer (3) is inserted at the same
time into the first and the second channels (11, 21) respectively
provided in the inner edge of the fixation block (1) and the outer
edge of the fixed turbine (2). The retainer (3) and both of the
first and the second channels (11, 21) are secured altogether to
effectively minimize possible distorted precision or deformation
due to knocking and processing.
[0018] The present invention by having vertically provided the
first channel in the inner edge of the fixation block, the
corresponding second channel in the outer edge of the fixed
turbine, and the retainer inserted between said two channels to
restrain and form a link section for the fixed turbine and the
fixation block from the housing to secure the fixed turbine from
turning, offers a preferred positioning structure for a fixed
turbine in a turbo-compressor. Therefore, this application for a
utility patent is duly filed accordingly.
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