U.S. patent application number 16/956095 was filed with the patent office on 2021-11-25 for compressor.
This patent application is currently assigned to Secop GmbH. The applicant listed for this patent is Secop GmbH. Invention is credited to Reinhard RESCH, Hans Peter SCHOGLER.
Application Number | 20210363982 16/956095 |
Document ID | / |
Family ID | 1000005813516 |
Filed Date | 2021-11-25 |
United States Patent
Application |
20210363982 |
Kind Code |
A1 |
SCHOGLER; Hans Peter ; et
al. |
November 25, 2021 |
COMPRESSOR
Abstract
A compressor for compressing coolant circulating in a cooling
circuit, wherein the compressor includes at least one receiving
element for spring elements carrying a compressor/motor unit. With
its casing element, this receiving element protrudes past a sump
height of a lubricant sump in a vertical direction, which lubricant
sump forms in the housing interior in an operating state of the
compressor. Because lubricant is constantly distributed throughout
the entire housing interior in the operating state--caused by the
motion of the movable parts of the compressor--lubricant also
collects within a receiving volume of the receiving element, where
it forms a level that is clearly above the sump height of the
lubricant sump as viewed in a vertical direction. As a result, a
damping of the spring elements is achieved by the lubricant, and
therefore without the inclusion of additional means elements.
Inventors: |
SCHOGLER; Hans Peter;
(Fehring, AT) ; RESCH; Reinhard; (Feldbach,
AT) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Secop GmbH |
Flensburg |
|
DE |
|
|
Assignee: |
Secop GmbH
Flensburg
DE
|
Family ID: |
1000005813516 |
Appl. No.: |
16/956095 |
Filed: |
December 19, 2018 |
PCT Filed: |
December 19, 2018 |
PCT NO: |
PCT/EP2018/085960 |
371 Date: |
June 19, 2020 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F04B 39/0284 20130101;
F04B 39/0044 20130101; F04B 39/127 20130101 |
International
Class: |
F04B 39/12 20060101
F04B039/12; F04B 39/02 20060101 F04B039/02; F04B 39/00 20060101
F04B039/00 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 22, 2017 |
EP |
17210207.1 |
Claims
1. A compressor for compressing coolant circulating in a cooling
circuit, comprising a compressor housing enclosing a housing
interior of the compressor, a compressor/motor unit which comprises
at least one piston, which moves in a cylinder, and a motor, at
least one spring element, preferably multiple spring elements, via
which spring element the compressor/motor unit is attached in an
elastically mounted manner to a mounting region of the compressor
housing, preferably to a base region of the compressor housing, and
at least one receiving element arranged on the mounting region for
the at least one spring element, preferably one receiving element
for one spring element each, wherein the respective spring element
is accommodated in the receiving element, wherein the receiving
element comprises a base element, which is connected to the
mounting region and from which the spring element protrudes in a
vertical direction, a casing element, which casing element
surrounds the spring element in a sleeve-like manner, and a
receiving volume bounded by the base element and the casing
element, in order to enable a collection of lubricant in the
receiving volume, so that a section of the spring element that is
arranged in the receiving volume is enveloped by lubricant in the
operating state of the compressor, wherein the casing element
protrudes past a sump height of a lubricant sump in the vertical
direction, which lubricant sump forms in the housing interior in
the operating state of the compressor.
2. The compressor according to claim 1, wherein a minimum clear
inner diameter of the casing element is larger than a maximum outer
diameter of the spring element.
3. The compressor according to claim 1, wherein, in an operating
state of the compressor, in which operating state the at least one
spring element is loaded only with the weight of the
compressor/motor unit, at least the first three spring coils,
preferably 50% of the spring coils, particularly preferably more
than 70% of the spring coils, of the spring element lie within the
receiving volume of the respective receiving element.
4. The compressor according to claim 3, wherein a spring travel
extends between at least two of the spring coils of the respective
spring element that lie within the receiving volume in the
aforementioned operating state of the compressor.
5. The compressor according to claim 1, wherein the receiving
element comprises a rod-like spring holder protruding from the
receiving element in the vertical direction, via which spring
holder the spring element is connected by the inner side thereof to
the receiving element in a force fit.
6. The compressor according to claim 5, wherein the casing element
protrudes past the spring holder of the receiving element in a
vertical direction.
7. The compressor according to claim 1, wherein the casing element
of the receiving element is embodied to be elastic.
8. The compressor according to claim 1, wherein at least the casing
element, but preferably the entire receiving element, is made of an
elastomer, particularly preferably of a fluoroelastomer.
9. The compressor according to claim 1, wherein a clear inner
diameter of the casing element increases monotonically as viewed in
the vertical direction.
10. The compressor according to claim 9, wherein the casing element
comprises a first vertical section and a second vertical section,
wherein the first vertical section and the second vertical section
each extend in the vertical direction, wherein a first clear inner
diameter of the casing element is constant in the region of the
first vertical section and wherein the second vertical section the
casing element comprises a diameter expansion.
11. The compressor according to claim 9, wherein the casing
element, as viewed in a cross-section running parallel to the
vertical direction, has, at least sectionwise, the shape of a
circular arc, wherein a circle corresponding to said circular arc
has its center outside of the receiving element.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to a compressor for
compressing coolant circulating in a cooling circuit, comprising a
compressor housing enclosing a housing interior of the compressor,
[0002] a compressor/motor unit which comprises at least one piston,
which moves in a cylinder, and a motor, [0003] at least one spring
element, preferably multiple spring elements, via which spring
element the compressor/motor unit is attached in an elastically
mounted manner to a mounting region of the compressor housing,
preferably to a base region of the compressor housing, [0004] at
least one receiving element arranged on the mounting region for the
at least one spring element, preferably one receiving element for
one spring element each, wherein the respective spring element is
accommodated in the receiving element, wherein [0005] the receiving
element comprises a base element, which is connected to the
mounting region and from which the spring element protrudes in a
vertical direction, a casing element, which casing element
surrounds the spring element in a sleeve-like manner, and a
receiving volume bounded by the base element and the casing
element, in order to enable a collection of lubricant in the
receiving volume, so that a section of the spring element that is
arranged in the receiving volume is enveloped by lubricant in the
operating state of the compressor.
PRIOR ART
[0006] In generic compressors according to the prior art, it is a
well-known problem that the vibrations caused by the
compressor/motor unit are mainly transmitted to the compressor
housing of the compressor via spring elements, by means of which
the compressor/motor unit is mounted on the housing interior of the
compressor. The greater the portion of vibrations transmitted
undamped to the compressor housing, the higher the overall noise
emission of the compressor.
[0007] Enhancements to known compressors with regard to a reduced
noise emission are aimed, for example, at a damping of said
vibration transmission in the region of the spring elements.
However, it is thereby disadvantageous that special damping
elements are often necessary in this case, which by their very
nature are exposed to high loads and thus wear out over the long
term.
[0008] In this context, it was observed that means which are
already present in the housing interior of the compressor in the
operating state of the compressor can also be used to damp the
vibration transmission. In particular, it was determined that
spring elements that are covered to the greatest possible extent by
a lubricant sump present in the base region of the compressor
housing during the operating state of the compressor only transfer
to the compressor housing a very small portion of the oscillations
caused by the compressor/motor unit. The viscosity of the lubricant
sump, which is formed mainly from oil and coolant, results in a
damping of the spring elements surrounded by lubricant.
[0009] However, particularly the arrangement and position of the
motor of the compressor/motor unit inside of the housing interior
constitute factors that have a limiting effect on the height of the
lubricant sump level. The endeavor to reduce the noise emission of
the compressor using a higher lubricant sump level is thus opposed
by the requirement of not immersing the rotor of the
compressor/motor unit in particular in the lubricant sump.
OBJECT OF THE INVENTION
[0010] It is therefore an object of the present invention to
provide a compressor that enables an improved damping of the spring
elements and the accompanying vibration transmission to the
compressor housing.
DESCRIPTION OF THE INVENTION
[0011] The object is attained with a compressor according to the
invention for compressing coolant circulating in a cooling circuit,
comprising [0012] a compressor housing enclosing a housing interior
of the compressor, a compressor/motor unit which comprises at least
one piston, which moves in a cylinder, and a motor, [0013] at least
one spring element, preferably multiple spring elements, via which
spring element the compressor/motor unit is attached in an
elastically mounted manner to a mounting region of the compressor
housing, preferably to a base region of the compressor housing, and
[0014] at least one receiving element arranged on the mounting
region for the at least one spring element, preferably one
receiving element for one spring element each, wherein the
respective spring element is accommodated in the receiving element,
wherein the receiving element comprises a base element, which is
connected to the mounting region and from which the spring element
protrudes in a vertical direction, a casing element, which casing
element surrounds the spring element in a sleeve-like manner, and a
receiving volume bounded by the base element and the casing
element, in order to enable a collection of lubricant in the
receiving volume during operation of the compressor, so that a
section of the spring element that is arranged in the receiving
volume is enveloped by lubricant,
[0015] in that the casing element protrudes past a sump height of a
lubricant sump in a vertical direction, which lubricant sump forms
in the housing interior during operation of the compressor.
[0016] When the compressor is in operation, during which the
compressor is operated as intended for the compression of coolant,
the lubricant sump forms in the housing interior, or more precisely
in the base region of the housing interior. Usually by means of a
crankshaft that is driven by the motor of the compressor/motor unit
for the purpose of compressing coolant and extends sectionwise into
the lubricant sump, lubricant is transported out of the lubricant
sump in the direction of the compressor/motor unit in a manner
known per se, in order to lubricate, among other things, a crankpin
of the crankshaft, a connecting rod that produces an operative
connection between the piston and crankpin, a bearing in which the
crankshaft is mounted, and/or a cylinder wall of the cylinder, for
example. The lubricant then drains out of the compressor/motor unit
and is in this manner fed back to the lubricant sump.
[0017] The receiving element according to the invention, which
internally accommodates the respectively paired spring element
sectionwise for the purpose of tethering the same to the compressor
housing, in particular to the mounting region of the compressor
housing, enables the level of the lubricant to be increased in the
respective region of the spring element without the need to raise
the level of the lubricant sump overall. The lubricant present in
the housing interior during operation can thus be used to dampen
the spring elements.
[0018] This occurs in particular as a result of the casing element
of the receiving element, which casing element prevents, at least
to the greatest possible extent, a draining of lubricant that has
collected in the receiving volume of the receiving element into the
lubricant sump from the receiving element. In this sense, a
draining of lubricant from the receiving element is prevented to
the "greatest possible extent" if the degree of leak-tightness of
the receiving element ensures that any outflow of lubricant from
the receiving element, for example through porosities in the wall
element, is not greater than the constant inflow of lubricant into
the receiving element, which is open in the direction of the
compressor/motor unit, which inflow is caused by the lubricant
which spurts about the housing interior during operation of the
compressor and which drains out of the compressor/motor unit. Thus,
lubricant that drips off or drains out of the compressor/motor unit
of the compressor and collects in the receiving volume of the
receiving element initially remains in the interior of the
receiving element and is hindered from exiting the receiving volume
in the direction of the lubricant sump by the casing element of the
receiving element. Because the receiving element protrudes past the
sump height of the lubricant sump with its casing element in a
vertical direction, the level of lubricant inside the receiving
volume of the receiving element is, based in each case on a common
reference point, considerably higher than in the lubricant
sump.
[0019] This elevated level of the viscous lubricant (and oil) in
the region of the spring elements ensures that the damping effect
of the lubricant described at the outset can be optimally utilized,
since a significantly larger vertical section of the spring
elements can be placed under lubricant than is the case with known
compressors, in which the height of the lubricant sump is limited
by the factors also mentioned at the outset, in particular by the
arrangement of the compressor/motor unit. As a result, an optimal
damping of the spring elements can be achieved in the event of
deflection, compression or expansion of the spring elements, and
the noise emission caused by the vibration transmission of the
spring elements can be considerably reduced. In addition, potential
collisions between the receiving element and the compressor/motor
unit, more precisely between the spring holder of the receiving
element and an additional spring holder of the compressor/motor
unit, which additional spring holder serves to secure the
respective spring element to the compressor/motor unit and
protrudes sectionwise into the spring element, are damped by a film
of lubricant located between said parts.
[0020] Through a radial spacing of all other spring coils from the
casing element of the receiving element except for first spring
coils of the respective spring element as viewed in a vertical
direction, which first spring coils can be embodied by the one, two
or three spring coils of the spring element that are closest to the
mounting region, it is ensured that the respective spring element
is entirely surrounded on the outside thereof by lubricant, at
least in the region of the other spring coils thereof. The damping
effect described above is thus further enhanced. In this case, both
the first spring coils and also the other spring coils of the
spring element are located in the receiving volume of the receiving
element in an operating state of the compressor, wherein in this
operating state only the weight of the compressor/motor unit acts
on the at least one spring element. Radial spacing of the spring
coils from the casing element is thereby used to denote the
distance that is perpendicular to the vertical direction and
extends between the spring coils that are surrounded within the
receiving element, and thus by the casing element, and the casing
element.
[0021] In a preferred embodiment of the compressor according to the
invention, it is provided that a minimum clear inner diameter of
the casing element is larger than a maximum outer diameter of the
spring element, so that all spring coils arranged within the
receiving volume for the respective spring element are radially
spaced from the casing element of the respective receiving
element.
[0022] In this case, the spring element can be surrounded by
lubricant in the region of the entire vertical section thereof
extending inside the receiving element. In this embodiment of the
compressor according to the invention, it is in particular provided
that the first spring coils--and therefore all spring coils
arranged within the receiving element--of the respective spring
element are also spaced from the casing element. Movement of the
spring is thus, at least in the case of smaller amplitudes, not
impeded by the casing element. Collisions between the spring coils
and the casing element of the receiving element are prevented to
the greatest possible extent in compressors embodied in this
manner. Particularly in connection with receiving elements that are
embodied to be rigid, for example those made of metal, a
considerable noise reduction can thus be achieved.
[0023] In another preferred embodiment of the compressor according
to the invention, it is provided that, in the aforementioned
operating state of the compressor, in which operating state the at
least one spring element is loaded only with the weight of the
compressor/motor unit, at least the first three spring coils (21,
22), preferably 50% of the spring coils, particularly preferably
more than 70% of the spring coils, of the spring element lie within
the receiving volume (32) of the respective receiving element (15,
16, 17, 18).
[0024] It is thus ensured that the lubricant collecting in the
receiving volume can reach a level that is particularly beneficial
for damping purposes in relation to the height of the spring
element. In the preferred embodiment of the compressor, the
lubricant level in the receiving volume is raised such that, even
in the case of complete compression of the spring element, no
spring coils of the spring element collide with one another outside
of the receiving element--and therefore outside of the lubricant.
All collisions taking place between spring coils are thus damped by
the lubricant present in the receiving element. In this manner, an
additional reduction of the noise emission is achieved.
[0025] In a preferred embodiment of the invention, it is provided
that at least two of the spring coils of the respective spring
element that lie within the receiving volume are spaced apart from
one another such that a spring travel extends between them.
[0026] As a result, the damping effect achieved with the lubricant
can be utilized even more efficiently.
[0027] In the aforementioned operating state of the compressor, the
spring element is particularly preferably arranged within the
receiving volume at least up to and including a transition region
between active and passive spring coils. The non-spaced spring
coils are thereby understood as being passive, and the spring coils
spaced apart from one another are understood as being active.
[0028] Since the damping effect caused by the lubricant located in
the receiving volume in the operating state of the compressor is
the strongest in this transition region, an enhanced damping is
achieved with such embodiments of the compressor according to the
invention.
[0029] In another preferred embodiment of the compressor according
to the invention, it is provided that the receiving element
comprises a rod-like spring holder protruding from the receiving
element in a vertical direction, via which spring holder the spring
element is connected by the inner side thereof to the receiving
element in a force fit.
[0030] With the spring holder of the receiving element, which
spring holder is typically embodied as a securing pin with a
diameter that tapers in a vertical direction, a particularly simple
and at the same time reliable securing of the spring element to the
receiving element--and therefore to the mounting region--is
enabled. Especially if the spring element is embodied as a helical
spring, a particularly simple and reliable fixing of the spring
element to the receiving element can be achieved by sliding the
helical spring onto the spring holder, provided that the diameter
of the spring holder is matched to an inner diameter of the helical
spring. The spring holder can thereby be embodied in one piece with
a base element and the casing element of the receiving element, and
can be pulled with a hollow inner section onto a raised piece of
the compressor housing arranged in the base region, in order to
secure the receiving element to the compressor housing.
Alternatively, the receiving element can comprise an opening in the
base element thereof embodied in one piece with the casing element,
through which opening a rod-like part of the compressor housing
protruding in a vertical direction from the base region extends
into the receiving element. In such a case, the opening is matched
to the protruding part of the compressor housing such that a
leakage of lubricant from the receiving element is not possible, or
is prevented to the greatest possible extent, in the region in
which the protruding part and the opening contact one another.
[0031] In another embodiment of the invention, the base element can
be formed by the mounting region of the compressor housing.
[0032] Particularly preferred is a further embodiment of the
compressor according to the invention, in which embodiment the
casing element protrudes past the spring holder of the receiving
element in a vertical direction.
[0033] As a result, a maximization of the receiving volume of the
receiving element for lubricant is achieved so that the receiving
volume can accommodate multiple spring coils.
[0034] In order to reduce that portion of noise emission which can
be attributed to the collision between the deflected spring element
and the casing element of the receiving element, it is provided in
another preferred embodiment of the invention that the casing
element of the receiving element is embodied to be elastic.
[0035] In relation thereto, it is particularly advantageous if, as
is provided in another preferred embodiment of the compressor
according to the invention, at least the casing element, but
preferably the entire receiving element, is made of an elastomer,
particularly preferably of a fluoroelastomer. This material results
in an increased service life of the receiving element, which is
exposed on a sustained basis to extremely high temperatures and the
lubricant itself during the operating state of the compressor.
[0036] In a particularly preferred embodiment of the compressor
according to the invention, it is provided that a clear inner
diameter of the casing element increases monotonically as viewed in
a vertical direction, namely the clear inner diameter increases
within the meaning of a monotonically increasing function of the
vertical direction.
[0037] On the one hand, the receiving volume of the receiving
element, in which receiving volume lubricant collects and can help
dampen the spring element, is further increased by this measure. On
the other hand, the fact that the amplitude of deflection of the
spring element increases in the vertical direction is thus taken
into account. It is thus ensured that the spring element does not
contact the casing element, even in the case of extreme deflections
of the spring element, for example during the start/stop process of
the compressor/motor unit of the compressor. This is also
accompanied by the reduction of that portion of the noise emission
which is due to the collision between the deflected spring element
and the casing element of the receiving element, which casing
element is made of metal, for example.
[0038] It can be particularly advantageous if the casing element of
the receiving element, which casing element surrounds the spring
element and possibly the rod holder in a sleeve-like manner, is
curved significantly outwardly at the end region thereof facing
away from the compressor housing. To achieve the volume increase of
the receiving element that accompanies a casing element embodied in
such a manner, it is provided in another preferred embodiment of
the compressor according to the invention that the casing element,
as viewed in a cross-section running parallel to the vertical
direction, has, at least sectionwise, the shape of a circular arc,
wherein a circle corresponding to said circular arc has its center
outside of the receiving element.
[0039] In a particularly preferred embodiment of the compressor
according to the invention, it is provided that the casing element
comprises a first vertical section and a second vertical section,
wherein the first vertical section and the second vertical section
each extend in a vertical direction, wherein a first clear inner
diameter of the casing element is constant in the region of the
first vertical section and wherein the second vertical section of
the casing element comprises a diameter expansion.
BRIEF DESCRIPTION OF THE DRAWINGS
[0040] The invention will now be explained in greater detail with
the aid of exemplary embodiments. The drawings are by way of
example and are intended to demonstrate, but in no way restrict or
exclusively describe, the inventive concept.
[0041] In this matter:
[0042] FIG. 1 shows a sectional view of a compressor according to
the invention
[0043] FIG. 2 shows a detailed view from FIG. 1
[0044] FIG. 3 shows an embodiment of a receiving element according
to the invention together with a spring element
[0045] FIG. 4 shows a top view of the housing base of the
compressor from FIG. 1 with four receiving elements and associated
spring elements
WAYS OF EMBODYING THE INVENTION
[0046] FIG. 1 shows a coolant compressor in a sectional view,
wherein the section runs through the compressor housing 1 of the
compressor. In a housing interior 2 surrounded by the compressor
housing 1, a compressor/motor unit 4 is arranged which primarily
comprises a motor 8 and a cylinder 5 for compressing coolant,
wherein the coolant can flow into the housing interior 2 via an
inlet in the compressor housing 1.
[0047] Via a connecting rod, a crankshaft 7 driven by the motor 8
is in operative connection with a piston 6 arranged in the cylinder
5 so that the rotation of the crankshaft 7 results in a periodic
linear movement of the piston 6 between two dead centers of the
cylinder 5.
[0048] On a base region of the compressor housing 1 serving as a
mounting region 34 of the compressor/motor unit 4, four receiving
elements 15, 16, 17, 18 are provided (see FIG. 4), of which only
the receiving elements 15 and 16 can be seen in FIG. 1. The
receiving element 15 is thereby fabricated in one piece and
comprises a base element 28 in contact with the mounting region 34,
a casing element 20 adjoining the base element 28, and a spring
holder 19 protruding from the base element 28 in a vertical
direction 23. The receiving element 15 is thereby pulled onto a
raised piece 29 of the compressor housing 1 with a hollow space of
the spring holder 19, whereby the receiving element 15 is connected
to the compressor housing 1 in a force fit. The casing element 20
encloses the spring holder 19 and a receiving volume 32 of the
receiving element 15, which receiving volume 32 is formed between
the spring holder 19 and the casing element 20, on the
circumference or in a sleeve-like manner. The casing element 20
protrudes past the spring holder 19 in the vertical direction 23
(see also FIG. 2).
[0049] FIG. 2 is a detailed view of the receiving element 15. It
can thereby be seen that a level of the lubricant 9 inside the
receiving volume 32 of the receiving element 15 is noticeably
higher than in a base region of the compressor housing 1, where a
lubricant sump 30 forms during the operation of the coolant
compressor as intended, the maximum sump height 14 of which
lubricant sump 30 is, however, limited by the position of the
compressor/motor unit 4. According to the invention, this is
achieved in that the casing element 20 of the receiving element 15
protrudes past the sump height 14 of the lubricant sump 30 in the
vertical direction 23. The five spring coils, which are arranged
within the receiving volume 32, of the spring element 10 embodied
as a helical spring, which spring element 10 is slid onto the
spring holder 19 of the receiving element 15 for the purpose of
securing and is fixed in this position in a force fit, are thus
surrounded by lubricant 9, whereby a damping of the vibrations
caused by the compressor/motor unit 4 and transmitted to the
compressor housing 1 via the spring element 10 is achieved. For the
purpose of securing the spring element 10 to the receiving element
15, the spring element 10 is slid onto the spring holder 19 of the
receiving element and connected thereto in a force fit.
Analogously, the spring element 10 is connected to the
compressor/motor unit 4 via an additional spring holder 33 of the
compressor/motor unit 4.
[0050] In FIG. 2, the casing element 20 surrounds the spring holder
19 of the receiving element 15 in a sleeve-like manner and has the
same clear inner diameter when viewed across its entire height. In
this embodiment, all spring coils of the spring element 10 embodied
as a helical spring that are arranged within the receiving element
15 contact the casing element 20. In embodiments of the coolant
compressor in which the receiving elements are made of an
elastomer, preferably of a fluoroelastomer, this noise-reduction
effect is particularly pronounced, since this material exhibits the
flexibility necessary therefor and also withstands on a sustained
basis the high temperatures and the constant contact with lubricant
9.
[0051] In contrast to the receiving element 15 shown in FIG. 2, in
FIG. 3 only first spring coils 21 of the spring element 10--in this
case: the first and second coils--are in contact with the casing
element 20 of the receiving element 15 illustrated in FIG. 3, so
that other spring coils 22 of the spring element 10, which other
spring coils 22 are located farther away from the mounting region
34 of the compressor housing 1 than the first spring coils 21, are
radially spaced from the casing element 20 of the receiving element
15.
[0052] For the purpose of the present invention, radial spacing is
to be understood as meaning a distance perpendicular to the
vertical direction, that is, the direction in which the spring
element 10 and possibly the spring holder 19 protrude from the
receiving element 15, between a spring coil arranged within the
receiving volume 32 and the section of the casing element 20
arranged at the same height as the respective spring coil.
[0053] In addition, the spacing of the other spring coils 22--in
this case: the third, fourth, and fifth coils--from the casing
element 20 results in an additional reduction in noise emission by
the coolant compressor overall, since noises that would be caused
by the collision of the spring element 10 with the casing element
20 can be prevented to the greatest possible extent.
[0054] The casing element 20 of the receiving elements 15 from FIG.
3 comprises a first vertical section 25 arranged such that it runs
in the vertical direction 23 and a second vertical section 26 which
is arranged such that it also runs in the vertical direction 23. A
first clear inner diameter 27 of the casing element 20 embodied in
a sleeve-like manner is constant over the entire first vertical
section 25. In its second vertical section 26, however, the casing
element 20 comprises a diameter expansion 24 proceeding
continuously from the first clear inner diameter 27 all the way to
a maximum clear inner diameter 31 that is reached at the upper end
of the casing element 20. It is thus ensured that the spring
element 10 also cannot collide with the casing element 20 in the
event of significant deflections.
[0055] FIG. 4 shows a top view of a base region of the compressor
housing 1. The receiving elements 15, 16, 17, 18 are arranged in
one mounting region 34 each of the compressor housing 1. Each
receiving element 15, 16, 17, 18 thereby keeps one spring element
10, 11, 12, 13 arranged. Together, the receiving elements 15, 16,
17, 18, which can be embodied according to the embodiments
described above, and the spring elements 10, 11, 12, 13 arranged
therein form a mounting system 3 for the compressor/motor unit 4 of
the compressor.
LIST OF REFERENCE NUMERALS
[0056] 1 Compressor housing [0057] 2 Housing interior [0058] 3
Mounting system [0059] 4 Compressor/motor unit [0060] 5 Cylinder
[0061] 6 Piston [0062] 7 Crankshaft [0063] 8 Motor [0064] 9
Lubricant [0065] 10, 11, 12, 13 Spring element [0066] 14 Sump
height [0067] 15, 16, 17, 18 Receiving element [0068] 19 Spring
holder [0069] 20 Casing element [0070] 21 First spring coil [0071]
22 Other spring coils [0072] 23 Vertical direction [0073] 24
Diameter expansion [0074] 25 First vertical section [0075] 26
Second vertical section [0076] 27 First clear inner diameter [0077]
28 Base element [0078] 29 Raised piece [0079] 30 Lubricant sump
[0080] 31 Maximum clear inner diameter [0081] 32 Receiving volume
[0082] 33 Additional spring holder of the compressor/motor unit
[0083] 34 Mounting region
* * * * *