Refrigerant compressor gasket

pair passes strokes

under

the

the roller

rams

and

pair.

tools

centrifugal

force and the workpiece

be inserted

axially. The tolerances

achieved process

in rotary are iO.01

swaging

booths,

swaging

high

swaging

especially hit

the

workpiece,

loading

The friction must

portion

of

be great

to

where

the

located

at which

the the

hit

available

process

defects,

requirements

which and

of the

of sealing

is to

by

tailored

processing damage prevent

of glow in mass

plugs,

and

production.

to the gasket harmful

material

penetration

glow plugs will be made

to

of the indicated

tube end area and can be incorporated production

make

overcomes

is

The

l

at

less noise is produced.

have less susceptibility

of oxygen

and

the

to

resulting

failure.

Refrigerant compressor gasket

;

sealing

of the terminal-side

Tide:

end area of a glow

plug tube meets the necessary

allows

requirements

for

conventionally heating

further

to

Finally,

in which

the

Figure

consists

(5) embedded

3,

a

control

element

(3) with elements

Assignee:Toyoda Jidoshokki Seisakusho,

(4). The

Aichi, Japan

material

is permanently

plug

connected

side to a rod-shaped

on

inner pole (1)

the glow tube; the inner pole projects

of the terminal-side The inner

in the outlet

opening

(2),

interior

using an overlying

which

simultaneously

end

conventionally

area

closed

of the

glow

by rotary

the

tube

is for

the sealing,

the diameter

being reduced crimping

in Figure

of the terminal-side

glow tube, by which centre.

In

preferably

way

sealing

to the conventional

limit

of

Preferably

six crimp

uniformly

around

axial length

Then

fins

are

the indicated

roughly

the

compressed

entire

this process

and

to its final

the crimping

a cylindrical

located

inner

is a metallic

for

sealing

boundaries

within

base gasket

the

sealing

outer

compressor, for

high-

and

the compressor.

inner sealing portions

angles

and

in an elastically of the

is trifiucatedly

of the ridge of the outer

(i.e. with three arms). This has a

arrangement

the connected

the

low-pressure

ridge, and at least one section

to a portion

and

sealing

The outer

are formed

ridge of the inner sealing portion

equal

in every

It has an outer

portion

between

geometric

end area; the

coating,

compressors sealing

of a refrigerant

sealing portion

in this embodiment

heating

an

connected

material.

10 mm.

by swaging, is reduced

the permanent

made,

portion

deformable of

stable and good

to this patent

circumference

regions in

swaging,

deformation

conventional

of the crimping

is preferably

element, because

rotary

process,

takes place far below

elongation

acquires

the

is not damaged

or roll flanging

the gasket

diameter

end area of the

the inner pole is fixed in the

a gasket,

contrast rolling

this

leads to

membrane

refrigerant

coated with an elastic membrane. sealing

4, the crimping

elastic

com-

a metallic

of its sealing portions.

Central

of this glow tube area

at the same time.

As shown

exhibits

section

encountered

refrigerant

also describes

for use with

which

fixing and to secure the inner pole and complete

a thin

for

an

for refrigerant

the defects

gaskets patent

with

adapted

is to provide

base gasket

to obviate

The

gasket,

invention

metallic

pressors.

This

swaging

of this

improved

in conventional

sealing seals

An object

compressors,

fixed centrally

of the glow tube from the outside.

terminal-side

out

end area of the glow tube.

pole is conventionally

number: US 6258648

Date: 28 June 2001 Inventors: H. Ikeda et al.

glow

of a glow tube

and optional in insulating

the terminal within

In particular,

in

elements

heating

Gasketfor sea&i a refrigerant

compressor Patent

shown

the glow

is avoided,

As

element

three from

in which ridges

apex lines of

are spaced

one another

with

apart

by

respect

to

the centre. rod

is

in doing

further

is reworked

shape and surface

A gasket with a surface

so the

magnitude.

then pressed into the glow plug body.

Sealing Technology No. 92

to the gasket is avoided;

glow plugs

penetration

the

into mass

of oxygen.

available

is more exact than in the prior

the same time, much

this sealing.

a

indicated

approach

in the

of damage

invention

are

and axial

in it, for example

of this

tools

lower investment

device, while at the same

art, and damage

from

tools

of the end area to be machined

object

crimping

requires

service lives and cycle times can

Concentricity

l

devices hit one another.

elements

be

The noise

due to the large radial

there is the danger

can

be achieved.

is

overstretching. The

time higher

of the

from being expelled

at the locations

swaging

glow tube, sealing

6

noise

which

the feed direction.

rollers,

In addition,

invention

conventional

and the simplified

and in idling, when the tool halves of

the rotary

of the

as follows:

used, this process

in the rotary

per stroke

in the tools

the workpiece

rams

necessitates

ram frequency,

machine.

the tools opposite

advantages

Because

l

can be

and devices. The noise is caused

the workpieces

arises

to

The

summarized

and tool costs due to the simplified

by the low forming

prevent

continues which

is disadvantageous

process

rotary

by

mm.

by the necessary caused

the

opened

in a cold working

The high noise levels, which control

Between

are

membrane,

In

together

and again

between

which

is

refrigerant

is adapted

coated to

with an elastic

being

interposed,

with a valve plate and a discharge a cylinder compressor

block under

and

a housing

compression.

valve, of a This

comprises:

w

Figure

6 illustrates,

characterized provided

with

adapted

compressor

housings

necessary

sealing

The

housing, suction

atmospheric

continuously

an

running

ridges are shown connected

environment.

to one

An inner sealing portion

for sealing between

portions

‘A’ and

high-

regions

portion

and

and low-pressure

compressor, provided

with with

the inner

within

sealing

the

connected

portion

three-branched

section

connected

to the

outer sealing portion. A deformable

ridge portion

of the outer

and inner

formed

sealing

have the shape of a curved has a continuously

in each

portions

to

projection.

This

extending

apex line, with

the ridge of the predetermined

section of the

inner

sealing

portion

the ridge of the outer forms the

a three-armed three

angles

neighbouring

(32) adapted

ridges are substantially

T-shape

an

Nevertheless,

This

opposite

discharge

refrigerant

compressors

as swash plate and wobble compressors blocks

are axially combined

a swash

plate

returning

together

chamber

in which

blocks,

a refrigerant

refrigerating

system is

region

Figure

which

integral

between

extending

cylinder

(3, 4), and with

are

is arranged

and coated with an elastic material

such

by employing

to be formed

previous

gaskets.

part of

the circular

outer

ridge (62) arranged portion

sealing

(61) arranged

portions

in the annular

(51),

for sealing

sections

the inner sealing portion

position other

connected

the

to

of lug portions

radially

portion,

of the

give

to a different

outer

sections

a

and the

inner

sealing

three-branched

predetermined

position

while passing by one

(43) in which a through-bore

for the insertion

of

to give

to a predetermined

sealing

section

extends

connection

extends

connection

of the outer

portion

to the

One of the connected

(44)

of the screw bolt (7) is formed.

Slowly expanding gasket Tide: Slowly expanding gasket and method for use thereof

dies and a

in a basically

with valve retainers

round

similar

Date: 26 June 2001 Inventor: l? Castensson Assignee: Telefonaktiebolaget LM Ericsson, Stockholm, Sweden

to This patent gasket

describes

and/or

an elastically

a sealing

phone.

material

The gasket

for assembling

a seal against

also describes

a gasket

in a

large pressures,

does not provide The patent

deformable installed

of this invention

to withstand

and/or

is and

fluids,

a method

sealing

material

in a device with several components. and/or

sealing

in

of an elastic

cellular

and a

be elastically

deformed,

compression,

The method

inner sealing

between

connected

has

sealing portion.

The gasket

(50) has a ridge

the

in an annular

portion

the body of the compressor. The gasket

and is formed

inside

regions. The inner sealing

for example.

front and rear

the inner

radially

Patent number: US 6250647

(5,6). plate

integral

such as the

gaskets

retainers

made of a metallic

element

discharge

the blocks

the valve plates and the front

It is produced

as the

(14 or 15). Thus,

strip suitable

therefore

(1, 2) to form a primary

such

Suction

between

valve

an inner

high- and low-pressure

a gasket formed

with axially combined

blocks

with

with

region

The compressor

incorporates

with a valve retainer.

is provided

defects.

of

and a low-pressure

not intended

5 shows a swash plate type refrigerant

integrally

have interposed

circumference

in the front or rear

portion

cellular

to be compressed.

compressor,

at

two three-

valves (24, 25) together

press machine

to define,

of both cylinder

from an external

introduced

cylinder

portion

as rubber.

and rear cylinder

A,

connection

and rear valve plates

The gasket is basically material

plate type refrigerant

- a pair of front

at a connecting

- such

are

ends of the combined

formed

interposed

portions

and rear housings conventional

at portion

of the ridges of the outer and

23)

and the front

equal to one another.

of

is achieved

the above-mentioned

armed connections

(30)

of the ridges

a

for sealing between

of the outer sealing portions

sealing

three

are

B.

(22,

between

portion

portions

irregular

by

at

sealing

in

(16 or 17) defined

a three-branched

connection

and

sealing

apex lines of the connected

sealing

connection

inner

formed

inner

are

arms

the outer

T-shape

valves

in which

by three

by a normal

with

connection

the

the outer and inner sealing

portion

of the

to each other.

interconnected portion.

another ‘B’, where

The three-armed

at least one predetermined

apex (the apexes

by solid lines). The ridges

is formed

the outer

outer sealing portion against

in

or rear

strip with a radial width

is also provided

chamber

sealing

to seal the outer

(31) of the

compressor.

gasket

chamber

portion

portion

the front

portion

for sealing

a high-pressure

of the compressor

sealing

when it is incorporated

extending

sealing portion

sealing

gasket

and the front or rear valve plate. Thus,

outer

cylindrically

circumference

is

the

i.e. between

the refrigerant

An outer

a

that

an outer

the compressor,

Q

scale,

of

to sealing the outer circumference

refrigerant

the

at an enlarged

portion

plastic

material material

are made which

and slowly expands

can after

is as follows:

(52). These ridges of the outer and inner

sealing

portions

formed

as smoothly

of the curved

gasket

(‘beads’)

projections

with

are a

l

The gasket thickness

is compressed

to a compressed

from

its relaxed

thickness.

A

PY

Sealing Technology No. 92