US20130330214A1 - Discharge silencer for a hermetically encapsulated refrigerant compressor - Google Patents
Discharge silencer for a hermetically encapsulated refrigerant compressor Download PDFInfo
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- US20130330214A1 US20130330214A1 US13/695,881 US201113695881A US2013330214A1 US 20130330214 A1 US20130330214 A1 US 20130330214A1 US 201113695881 A US201113695881 A US 201113695881A US 2013330214 A1 US2013330214 A1 US 2013330214A1
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- Prior art keywords
- refrigerant
- piston
- discharge silencer
- cylinder unit
- edge
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
- F04C29/068—Silencing the silencing means being arranged inside the pump housing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
- F04B39/0061—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using muffler volumes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
- F04B39/0072—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes characterised by assembly or mounting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/121—Casings
Definitions
- the present invention relates to a discharge silencer for a hermetically encapsulated refrigerant compressor, which comprises a piston/cylinder unit that compresses a refrigerant and has a compression chamber, and is surrounded by a hermetically sealed compressor housing, wherein the compression chamber is supplied with refrigerant coming from an evaporator, by way of a suction silencer, and discharges compressed refrigerant compressed by the piston/cylinder unit, into a pressure line, by way of the discharge silencer.
- Discharge silencers are characterized in that a chamber system is configured in the volume of a basic body, through which system compressed refrigerant must flow relatively shortly after its compression, in order to be able to achieve the desired silencing, on the one hand, but on the other hand also to be able to impede heat losses of the hot refrigerant after the compression process, in the discharge silencer, which has large surface areas as compared with the pressure line.
- the configuration of the chamber system is based primarily on the frequency range to be silenced, but also on heat technology aspects.
- discharge silencers are often disposed to disruptively project from the cylinder head of the piston/cylinder unit into the interior of the compressor housing, which has effects, among other things, on the size of the compressor housing, which appears to bulge unnaturally at this location.
- the discharge silencer has a basic body on which an inlet flange for the refrigerant coming from the piston/cylinder unit is disposed, and an outlet channel, by way of which the refrigerant can be transferred to a pressure line that supplies a condenser with compressed refrigerant, and which basic body has four side walls, each having a longitudinal expanse and a shorter width expanse, in comparison with the former, whereby the two side walls that have a greater surface area lie opposite one another and are configured to be curved, in the same direction, in each instance, when viewed in a viewing direction parallel to the longitudinal expanse.
- the discharge silencer has two side walls that are curved in the same direction, in each instance, allows placement around a corner/edge or bend of the piston/cylinder unit and/or of components of the electric motor. Because of the two curvatures according to the invention, the discharge silencer can lie closely against the piston/cylinder unit or the electric motor with the one side wall, on the one hand, but also closely against the inside wall of the compressor housing, in order to consequently be able to also build the compressor housing as closely as possible to the piston/cylinder unit and to be able to minimize the empty space in the interior of the compressor housing.
- the curvature of the one side wall which has a larger surface area, takes place constantly, preferably following the shape of an arc.
- the curvature of the other side wall that is larger in surface area takes place discontinuously, in the form of at least two partial surfaces disposed at an angle relative to one another.
- the side wall of the discharge silencer can therefore be placed closely against an edge or bend of the electric motor (and/or components of it) and/or the piston/cylinder unit.
- the volume of the basic body is divided into different chambers, by means of multiple partitions that connect the two side walls.
- Claim 5 relates to a hermetically encapsulated refrigerant compressor, having a piston/cylinder unit that compresses a refrigerant and has a compression chamber, and is driven by an electric motor, as well as a hermetically sealed compressor housing that surrounds this unit, whereby the compression chamber is supplied with a refrigerant coming from an evaporator, by way of a suction silencer, and discharges compressed refrigerant into a pressure line, by way of the discharge silencer, by means of the piston/cylinder unit.
- the discharge silencer surrounds and sheathes an edge or bend of the electric motor or a part of it and/or of the piston/cylinder unit, seen in the viewing direction of the edge or bend.
- the edge or bend is an edge of the stator sheet-metal package of the electric motor.
- the discharge silencer comprises a basic body on which an inlet flange for the refrigerant coming from the piston/cylinder unit is disposed, and an outlet channel by way of which the refrigerant can be transferred to a pressure line that supplies a condenser with compressed refrigerant, and which basic body has four side walls, of which the two side walls that are larger in surface area and lie opposite one another are structured to be curved in the same direction, in each instance.
- the curvature of the one side wall that is larger in surface area takes place continuously, preferably following the shape of an arc.
- the curvature of the other side wall that is larger in surface area takes place discontinuously, i.e. approximately in the shape of at least two partial surfaces disposed at an angle relative to one another.
- the discharge silencer is advantageously attached to the piston/cylinder unit in such a manner that the edge region formed between the at least two partial surfaces runs directly in front of and essentially parallel to the edge or bend of the electric motor and/or of the piston/cylinder unit. In this manner, a particularly space-saving arrangement of the discharge silencer within the compressor housing is made possible.
- the space utilization within the compressor housing is further optimized in that, according to another preferred embodiment variant of the invention, it is provided that the curvature of one of the side walls that is larger in surface area corresponds, at least in certain sections, to the curvature of the compressor housing in the region of the placement of the discharge silencer within the compressor housing, seen in a viewing direction along the axis of the crankshaft of the electric motor.
- FIG. 1 a schematic overall view of a hermetically encapsulated refrigerant compressor having a discharge silencer according to the invention (top view)
- FIG. 2 a side view of the refrigerant compressor from FIG. 1 , with the compressor housing partly in section
- FIG. 3 an axonometric slanted view of a discharge silencer according to the invention
- FIG. 4 a bottom view of a discharge silencer according to the invention
- FIG. 5 a sectional view of the discharge silencer according to the invention
- FIG. 6 another axonometric slanted view of the discharge silencer according to the invention
- FIG. 7 a sectional view along line AA from FIG. 8
- FIG. 8 a side view of a hermetically encapsulated refrigerant compressor, without the upper part of the compressor housing
- FIG. 3 shows an axonometric slanted view of a discharge silencer 6 according to the invention, to be installed in a refrigerant compressor 1 , having a basic body 8 and an inlet flange 9 for a refrigerant coming from the piston/cylinder unit 4 (see FIG. 1 ).
- the basic body 8 has an elongated shape and possesses four side walls 11 , 12 , 13 , 14 , each having a longitudinal expanse 33 and a width expanse that is shorter, in comparison with the former, which side walls, in a lower end region, are delimited by or make a transition into a floor section 28 that is essentially flat and runs orthogonal to the side walls 11 , 12 , 13 , 14 , which section can be configured as a separate component.
- the side walls 11 , 12 , 13 , 14 run out into the inlet flange 9 .
- a cap-shaped ceiling section 29 is configured in the transition region between the side walls 11 , 12 , 13 and the inlet flange 9 .
- the hermetically encapsulated refrigerant compressor 1 as can be seen in FIG. 1 and FIG. 2 , in which the discharge silencer 6 according to the invention is installed, is surrounded by a hermetically sealing compressor housing 2 , the upper part of which is not shown in FIG. 1 , whereby a piston/cylinder unit 4 driven by an electric motor 25 having a rotor 42 is disposed within the compressor housing 2 .
- the piston/cylinder unit 4 comprises a piston 4 a that oscillates in a cylinder housing 4 b and compresses a refrigerant in a compression chamber 3 , in known manner, and conveys it in the direction of the discharge silencer 6 according to the invention.
- a crankshaft 26 that can rotate about an axis 27 , having a crankshaft journal 26 a that is disposed eccentric to the axis 27 , on which a connecting rod 30 that drives the piston 4 a is linked.
- the refrigerant compressed in the compression chamber 3 is first drawn in from the compressor housing, which it reaches by way of a suction line 34 that comes from an evaporator that withdraws heat from a cooling chamber, by the piston 4 a , by way of a suction silencer 5 .
- an outlet channel 10 is provided, by way of which the refrigerant can be transferred to a pressure line 7 a, b that supplies a condenser with compressed refrigerant.
- FIG. 4 which shows a view in the direction of the longitudinal expanse 33 of the discharge silencer 6 .
- the two side walls 11 and 12 which have a larger surface area, lie opposite one another and are structured to be curved in the same direction, in each instance.
- the discharge silencer 6 surrounds and sheathes an edge or bend 23 of the electric motor 25 or of parts of it and/or of the piston/cylinder unit 4 (see, in particular, FIG. 7 ).
- the edge or bend 23 sheathed by the discharge silencer 6 is an edge or bend 23 of a stator sheet-metal package 24 of the electric motor 25 .
- the present invention relates very generally to a discharge silencer that can also sheathe and surround parts of the piston/cylinder unit, in addition or completely as an alternative.
- the sections of the discharge silencer 6 that run on the left and the right of the edge or bend 23 run as close as possible to the electric motor 25 or parts of it and/or to the piston/cylinder unit 4 , in a viewing direction along the edge or bend 23 , or, alternatively, that the side surface 12 of the discharge silencer 6 that faces the edge or bend 23 forms the negative counterpart to the contour of the electric motor 25 or parts of it and/or of the piston/cylinder unit 4 , in the region of the edge or bend 23 .
- FIG. 7 shows the edge or bend 23 of the stator sheet-metal package 24 in detail.
- the cylinder housing 4 b as well as parts of the electric motor 25 were cut away, as is evident from FIG. 8 .
- the outline edges 41 of the stator sheet-metal package 24 that run on the left and the right of the edge or bend 23 , or, to state it more precisely, of the individual stator lamellae that are disposed to lie on top of one another can once again have any desired shape, in other words can either be configured to run straight, as is shown in FIG. 7 , on the left (solid line) and the right (broken line) of the edge or bend 23 , or to have an irregular curvature, as is shown in FIG. 7 to the right of the edge of bend 23 , with solid lines, depending on the requirements.
- the curvature of the side wall 11 that faces away from the electric motor 25 or the piston/cylinder unit 4 runs continuously, preferably following the shape of an arc.
- the side wall 12 that lies opposite the side wall 11 , facing the electric motor 25 or the piston/cylinder unit 4 can run discontinuously, for example as shown, in the form of at least two partial surfaces 12 a , 12 b that approximate a constant curvature and are disposed at an angle relative to one another.
- the side wall 12 has at least one kink or edge region 15 that divides the side wall 12 into at least two partial surfaces 12 a , 12 b.
- the angle drawn in FIG. 4 measured between the outer surfaces of the partial surfaces 12 a , 12 b (facing the electric motor 25 or the piston/cylinder unit 4 ), is less than 180° and preferably greater than 90°. In the present exemplary embodiment, the angle between the partial surfaces 12 a and 12 b of the side wall 12 amounts to approx. 150°.
- the discharge silencer 6 is attached to the piston/cylinder unit 4 in such a manner that the edge region 15 formed between the at least two partial surfaces 12 a , 12 b runs directly in front of the edge or bend 23 of the electric motor 25 or the piston/cylinder unit 4 .
- the curvature of the side wall 11 corresponds, at least in certain sections, to the curvature of the compressor housing 2 , in the region of the placement of the discharge silencer 6 within the compressor housing 2 , seen in a viewing direction long the axis 27 of the crankshaft 26 of the electric motor 25 .
- the opening of the inlet flange 9 of the discharge silencer 6 possesses an essentially kidney-shaped cross-section, which, in the installed position, follows the cylinder housing 4 b of the piston/cylinder unit 4 shown in FIG. 1 , or, to state it more precisely, a valve plate 35 that delimits the compression chamber 3 of the cylinder housing 4 b , whereby the opening cross-section of the inlet flange 9 encloses and seals one or more pressure openings present in the valve plate 35 .
- the inlet flange 9 of the suction silencer 6 is attached to the cylinder housing 4 b by means of one or more attachment elements 38 , whereby the at least one attachment element 38 presses the inlet flange 9 against the cylinder housing 4 b in the axial direction of the piston bore.
- the attachment element 38 is configured as a clamping element, which engages into the outer mantle of the cylinder housing 4 b , on corresponding undercuts 40 , with three shank-shaped end regions 38 a , for example (see FIG. 2 ).
- the basic body 8 of the discharge silencer 6 extends from a region adjacent to the valve plate 35 , in the direction of the electric motor 25 or in the direction of a floor region 39 of the compressor housing 2 .
- the predominant part of the discharge silencer 6 is therefore disposed below the piston/cylinder unit 4 , viewed in an operating position of the refrigerant compressor 1 .
- the volume of the basic body 8 of the discharge silencer 6 is divided into different (in the present exemplary embodiment: five) chambers 19 , 20 , 21 , 22 , 36 , by means of multiple partitions 16 , 17 , 18 , 19 that connect the side walls 11 , 12 .
- the refrigerant indicated with arrows 31 a - c in FIG. 5 flows through all the chambers 19 , 20 , 21 , 22 , 36 , before it is transferred out of the discharge silencer 6 to the pressure line 7 a, b , by way of the outlet channel 10 .
- the refrigerant that comes from the inlet flange 9 is divided into two refrigerant streams 31 a and 31 b that flow in the direction of the floor section 28 , by means of a first partition 16 ; these streams combine again to form a refrigerant stream 31 c in a collection region 32 adjacent to the floor section 28 , and enter into the third chamber 21 .
- the refrigerant stream 31 c is deflected by 180° and guided upward again, i.e.
Abstract
Description
- The present invention relates to a discharge silencer for a hermetically encapsulated refrigerant compressor, which comprises a piston/cylinder unit that compresses a refrigerant and has a compression chamber, and is surrounded by a hermetically sealed compressor housing, wherein the compression chamber is supplied with refrigerant coming from an evaporator, by way of a suction silencer, and discharges compressed refrigerant compressed by the piston/cylinder unit, into a pressure line, by way of the discharge silencer.
- The use of such discharge silencers in refrigerant compressor technology is sufficiently known and serves for reducing the noise emissions of the refrigerant compressor that occur during the discontinuous compression of refrigerant. Both metallic discharge silencers and nonmetallic variants are known. Depending on the placement and configuration of the discharge silencer, different frequency ranges can be silenced. Discharge silencers are characterized in that a chamber system is configured in the volume of a basic body, through which system compressed refrigerant must flow relatively shortly after its compression, in order to be able to achieve the desired silencing, on the one hand, but on the other hand also to be able to impede heat losses of the hot refrigerant after the compression process, in the discharge silencer, which has large surface areas as compared with the pressure line. In this connection, the configuration of the chamber system is based primarily on the frequency range to be silenced, but also on heat technology aspects.
- The requirement of building the discharge silencer as close as possible to the outlet valve of the piston/cylinder unit, in order to achieve optimal silencing and minimal heat losses, is often connected with space problems in practice, and has led to the result that discharge silencers are often disposed to disruptively project from the cylinder head of the piston/cylinder unit into the interior of the compressor housing, which has effects, among other things, on the size of the compressor housing, which appears to bulge unnaturally at this location.
- Within the course of an increase in resource efficiency and an accompanying reduction in the size of refrigerant compressors, as well as of their hermetically sealed compressor housings, however, it is desirable to accommodate the discharge silencer in the compressor housing in as space-saving a manner as possible.
- It is therefore the task of the present invention to provide a discharge silencer for a hermetically sealed refrigerant compressor, which takes up as little space as possible in the interior of the compressor housing.
- According to the invention, this is achieved, in the case of a discharge silencer of the type mentioned initially, in that the discharge silencer has a basic body on which an inlet flange for the refrigerant coming from the piston/cylinder unit is disposed, and an outlet channel, by way of which the refrigerant can be transferred to a pressure line that supplies a condenser with compressed refrigerant, and which basic body has four side walls, each having a longitudinal expanse and a shorter width expanse, in comparison with the former, whereby the two side walls that have a greater surface area lie opposite one another and are configured to be curved, in the same direction, in each instance, when viewed in a viewing direction parallel to the longitudinal expanse.
- The circumstance that the discharge silencer has two side walls that are curved in the same direction, in each instance, allows placement around a corner/edge or bend of the piston/cylinder unit and/or of components of the electric motor. Because of the two curvatures according to the invention, the discharge silencer can lie closely against the piston/cylinder unit or the electric motor with the one side wall, on the one hand, but also closely against the inside wall of the compressor housing, in order to consequently be able to also build the compressor housing as closely as possible to the piston/cylinder unit and to be able to minimize the empty space in the interior of the compressor housing.
- According to a particularly preferred embodiment variant of the invention, it is provided that the curvature of the one side wall, which has a larger surface area, takes place constantly, preferably following the shape of an arc. Such an embodiment allows ideal adaptation of the discharge silencer to the usually cylindrical or dome-shaped wall of the compressor housing.
- According to another preferred embodiment variant of the invention, it is provided that the curvature of the other side wall that is larger in surface area takes place discontinuously, in the form of at least two partial surfaces disposed at an angle relative to one another. The side wall of the discharge silencer can therefore be placed closely against an edge or bend of the electric motor (and/or components of it) and/or the piston/cylinder unit.
- In order to achieve good silencing properties at a simultaneously compact construction of the discharge silencer, it is provided, according to another preferred embodiment variant, that the volume of the basic body is divided into different chambers, by means of multiple partitions that connect the two side walls.
-
Claim 5 relates to a hermetically encapsulated refrigerant compressor, having a piston/cylinder unit that compresses a refrigerant and has a compression chamber, and is driven by an electric motor, as well as a hermetically sealed compressor housing that surrounds this unit, whereby the compression chamber is supplied with a refrigerant coming from an evaporator, by way of a suction silencer, and discharges compressed refrigerant into a pressure line, by way of the discharge silencer, by means of the piston/cylinder unit. While achieving the advantages already described in the introduction, it is provided, according to the invention, that the discharge silencer surrounds and sheathes an edge or bend of the electric motor or a part of it and/or of the piston/cylinder unit, seen in the viewing direction of the edge or bend. - In a particularly spatially economical embodiment variant of the invention, the edge or bend is an edge of the stator sheet-metal package of the electric motor.
- In a manner according to the invention, the discharge silencer comprises a basic body on which an inlet flange for the refrigerant coming from the piston/cylinder unit is disposed, and an outlet channel by way of which the refrigerant can be transferred to a pressure line that supplies a condenser with compressed refrigerant, and which basic body has four side walls, of which the two side walls that are larger in surface area and lie opposite one another are structured to be curved in the same direction, in each instance.
- According to a preferred embodiment variant, the curvature of the one side wall that is larger in surface area takes place continuously, preferably following the shape of an arc.
- According to another preferred embodiment variant, the curvature of the other side wall that is larger in surface area takes place discontinuously, i.e. approximately in the shape of at least two partial surfaces disposed at an angle relative to one another.
- The discharge silencer is advantageously attached to the piston/cylinder unit in such a manner that the edge region formed between the at least two partial surfaces runs directly in front of and essentially parallel to the edge or bend of the electric motor and/or of the piston/cylinder unit. In this manner, a particularly space-saving arrangement of the discharge silencer within the compressor housing is made possible.
- The space utilization within the compressor housing is further optimized in that, according to another preferred embodiment variant of the invention, it is provided that the curvature of one of the side walls that is larger in surface area corresponds, at least in certain sections, to the curvature of the compressor housing in the region of the placement of the discharge silencer within the compressor housing, seen in a viewing direction along the axis of the crankshaft of the electric motor.
- A brief description of the invention using figures of an exemplary embodiment now follows. These show:
-
FIG. 1 a schematic overall view of a hermetically encapsulated refrigerant compressor having a discharge silencer according to the invention (top view) -
FIG. 2 a side view of the refrigerant compressor fromFIG. 1 , with the compressor housing partly in section -
FIG. 3 an axonometric slanted view of a discharge silencer according to the invention -
FIG. 4 a bottom view of a discharge silencer according to the invention -
FIG. 5 a sectional view of the discharge silencer according to the invention -
FIG. 6 another axonometric slanted view of the discharge silencer according to the invention -
FIG. 7 a sectional view along line AA fromFIG. 8 -
FIG. 8 a side view of a hermetically encapsulated refrigerant compressor, without the upper part of the compressor housing -
FIG. 3 shows an axonometric slanted view of adischarge silencer 6 according to the invention, to be installed in arefrigerant compressor 1, having abasic body 8 and aninlet flange 9 for a refrigerant coming from the piston/cylinder unit 4 (seeFIG. 1 ). Thebasic body 8 has an elongated shape and possesses fourside walls longitudinal expanse 33 and a width expanse that is shorter, in comparison with the former, which side walls, in a lower end region, are delimited by or make a transition into afloor section 28 that is essentially flat and runs orthogonal to theside walls side walls inlet flange 9. As can be seen inFIG. 3 andFIG. 6 , in this connection, a cap-shaped ceiling section 29 is configured in the transition region between theside walls inlet flange 9. - The hermetically encapsulated
refrigerant compressor 1, as can be seen inFIG. 1 andFIG. 2 , in which thedischarge silencer 6 according to the invention is installed, is surrounded by a hermetically sealingcompressor housing 2, the upper part of which is not shown inFIG. 1 , whereby a piston/cylinder unit 4 driven by anelectric motor 25 having arotor 42 is disposed within thecompressor housing 2. The piston/cylinder unit 4 comprises apiston 4 a that oscillates in acylinder housing 4 b and compresses a refrigerant in acompression chamber 3, in known manner, and conveys it in the direction of thedischarge silencer 6 according to the invention. Also evident inFIG. 1 are acrankshaft 26 that can rotate about anaxis 27, having acrankshaft journal 26 a that is disposed eccentric to theaxis 27, on which a connectingrod 30 that drives thepiston 4 a is linked. - The refrigerant compressed in the
compression chamber 3 is first drawn in from the compressor housing, which it reaches by way of asuction line 34 that comes from an evaporator that withdraws heat from a cooling chamber, by thepiston 4 a, by way of asuction silencer 5. - In the
floor section 28 of thedischarge silencer 6, anoutlet channel 10 is provided, by way of which the refrigerant can be transferred to apressure line 7 a, b that supplies a condenser with compressed refrigerant. - As is particularly evident also in
FIG. 4 , which shows a view in the direction of thelongitudinal expanse 33 of thedischarge silencer 6, it is provided, according to the invention, that of the fourside walls basic body 8, the twoside walls - In this manner, it is possible that the
discharge silencer 6 surrounds and sheathes an edge orbend 23 of theelectric motor 25 or of parts of it and/or of the piston/cylinder unit 4 (see, in particular,FIG. 7 ). In the present exemplary embodiment, the edge orbend 23 sheathed by thedischarge silencer 6 is an edge orbend 23 of a stator sheet-metal package 24 of theelectric motor 25. In the following, for the sake of clarity, reference is made only to the concrete exemplary embodiment. However, it is clear to a person skilled in the art that the present invention relates very generally to a discharge silencer that can also sheathe and surround parts of the piston/cylinder unit, in addition or completely as an alternative. - What is meant with sheathe and surround according to the invention is that the sections of the
discharge silencer 6 that run on the left and the right of the edge orbend 23 run as close as possible to theelectric motor 25 or parts of it and/or to the piston/cylinder unit 4, in a viewing direction along the edge orbend 23, or, alternatively, that theside surface 12 of thedischarge silencer 6 that faces the edge orbend 23 forms the negative counterpart to the contour of theelectric motor 25 or parts of it and/or of the piston/cylinder unit 4, in the region of the edge orbend 23. -
FIG. 7 shows the edge orbend 23 of the stator sheet-metal package 24 in detail. For the sake of clarity, inFIG. 7 thecylinder housing 4 b as well as parts of theelectric motor 25 were cut away, as is evident fromFIG. 8 . In this connection, theoutline edges 41 of the stator sheet-metal package 24 that run on the left and the right of the edge orbend 23, or, to state it more precisely, of the individual stator lamellae that are disposed to lie on top of one another, can once again have any desired shape, in other words can either be configured to run straight, as is shown inFIG. 7 , on the left (solid line) and the right (broken line) of the edge orbend 23, or to have an irregular curvature, as is shown inFIG. 7 to the right of the edge ofbend 23, with solid lines, depending on the requirements. - As is evident in
FIG. 4 , the curvature of theside wall 11 that faces away from theelectric motor 25 or the piston/cylinder unit 4 runs continuously, preferably following the shape of an arc. - The
side wall 12 that lies opposite theside wall 11, facing theelectric motor 25 or the piston/cylinder unit 4, in contrast, can run discontinuously, for example as shown, in the form of at least twopartial surfaces side wall 12 has at least one kink oredge region 15 that divides theside wall 12 into at least twopartial surfaces - The angle drawn in
FIG. 4 , measured between the outer surfaces of thepartial surfaces electric motor 25 or the piston/cylinder unit 4), is less than 180° and preferably greater than 90°. In the present exemplary embodiment, the angle between thepartial surfaces side wall 12 amounts to approx. 150°. - In the present exemplary embodiment, the
discharge silencer 6 is attached to the piston/cylinder unit 4 in such a manner that theedge region 15 formed between the at least twopartial surfaces bend 23 of theelectric motor 25 or the piston/cylinder unit 4. - Furthermore, it can be provided that the curvature of the
side wall 11 corresponds, at least in certain sections, to the curvature of thecompressor housing 2, in the region of the placement of thedischarge silencer 6 within thecompressor housing 2, seen in a viewing direction long theaxis 27 of thecrankshaft 26 of theelectric motor 25. - As is evident in
FIG. 3 , the opening of theinlet flange 9 of thedischarge silencer 6 according to the invention possesses an essentially kidney-shaped cross-section, which, in the installed position, follows thecylinder housing 4 b of the piston/cylinder unit 4 shown inFIG. 1 , or, to state it more precisely, avalve plate 35 that delimits thecompression chamber 3 of thecylinder housing 4 b, whereby the opening cross-section of theinlet flange 9 encloses and seals one or more pressure openings present in thevalve plate 35. - In a preferred embodiment variant, the
inlet flange 9 of thesuction silencer 6 is attached to thecylinder housing 4 b by means of one ormore attachment elements 38, whereby the at least oneattachment element 38 presses theinlet flange 9 against thecylinder housing 4 b in the axial direction of the piston bore. Such an arrangement is already disclosed in connection with the attachment of a cylinder head in EP 1888918 B1. - In the exemplary embodiment according to
FIG. 1 , theattachment element 38 is configured as a clamping element, which engages into the outer mantle of thecylinder housing 4 b, on correspondingundercuts 40, with three shank-shapedend regions 38 a, for example (seeFIG. 2 ). - In a preferred embodiment variant of the invention, the
basic body 8 of thedischarge silencer 6 according to the invention extends from a region adjacent to thevalve plate 35, in the direction of theelectric motor 25 or in the direction of afloor region 39 of thecompressor housing 2. The predominant part of thedischarge silencer 6 is therefore disposed below the piston/cylinder unit 4, viewed in an operating position of therefrigerant compressor 1. - As can be seen in a sectional representation according to
FIG. 5 , the volume of thebasic body 8 of thedischarge silencer 6 is divided into different (in the present exemplary embodiment: five)chambers multiple partitions side walls - In this connection, the refrigerant indicated with arrows 31 a-c in
FIG. 5 flows through all thechambers discharge silencer 6 to thepressure line 7 a, b, by way of theoutlet channel 10. - As is evident in
FIG. 5 , the refrigerant that comes from theinlet flange 9 is divided into tworefrigerant streams floor section 28, by means of afirst partition 16; these streams combine again to form arefrigerant stream 31 c in acollection region 32 adjacent to thefloor section 28, and enter into thethird chamber 21. In this connection, therefrigerant stream 31 c is deflected by 180° and guided upward again, i.e. in a direction facing away from thefloor section 28, before it is deflected by 180° once again in the region of the ceiling section 29 (of the third chamber 21) and conveyed, over its further course, into thepressure line 7 a, b, through theoutlet channel 10. Analogous to the flow processes that take place in thethird chamber 21, the refrigerant also flows through thefourth chamber 22 and the fifth chamber 36: Refrigerant streams 31 c′ and 31 c″ are guided from thefloor section 28 to theceiling section 29 and once again back to the floor section 28 (of thechambers 22, 36), before therefrigerant streams 31 c′ and 31 c″ leave thedischarge silencer 6 through theoutlet channel 10. In theoutlet channel 10, all the refrigerant streams guided through thechambers -
-
- 1 refrigerant compressor
- 2 compressor housing
- 3 compression chamber
- 4 piston/cylinder unit
- 4 a piston
- 4 b cylinder housing
- 5 suction silencer
- 6 discharge silencer
- 7 a, b pressure line
- 8 basic body of the discharge silencer
- 9 entry flange
- 10 outlet channel
- 11 side wall of the discharge silencer
- 12 side wall of the discharge silencer
- 12 a, 12 b partial surfaces of the
side wall 12 - 13 side wall of the discharge silencer
- 14 side wall of the discharge silencer
- 15 edge on
side wall 12 - 16 first partition
- 17 second partition
- 18 third partition
- 19 first chamber
- 20 second chamber
- 21 third chamber
- 22 fourth chamber
- 23 edge/bend of the electric motor
- 24 stator sheet-metal package
- 25 electric motor
- 26 crankshaft
- 27 axis of the
crankshaft 26 - 28 floor section of the
discharge silencer 6 - 29 ceiling section of the
discharge silencer 6 - 30 connecting rod
- 31 a, 31 b, 31 c, 31 c′, 31 c″ refrigerant streams
- 32 collection region
- 33 longitudinal expanse of the side surfaces of the basic body
- 34 suction line
- 35 valve plate
- 36 fifth chamber
- 37 fourth partition
- 38 attachment element
- 39 floor region of the
compressor housing 2 - 40 undercuts on
cylinder housing 4 b - 41 outline edges of the stator sheet-metal package or the stator lamellae
- 42 rotor of the electric motor
Claims (4)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATGM290/2010U AT12789U1 (en) | 2010-05-04 | 2010-05-04 | PRESSURE SILENCER FOR A HERMETICALLY CAPACITATED REFRIGERANT COMPRESSOR |
ATGM290/2010 | 2010-05-04 | ||
PCT/AT2011/000213 WO2011137474A2 (en) | 2010-05-04 | 2011-05-04 | Discharge silencer for a hermetically encapsulated refrigerant compressor |
Publications (1)
Publication Number | Publication Date |
---|---|
US20130330214A1 true US20130330214A1 (en) | 2013-12-12 |
Family
ID=44904133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/695,881 Abandoned US20130330214A1 (en) | 2010-05-04 | 2011-05-04 | Discharge silencer for a hermetically encapsulated refrigerant compressor |
Country Status (5)
Country | Link |
---|---|
US (1) | US20130330214A1 (en) |
EP (1) | EP2567093B1 (en) |
CN (1) | CN102971533B (en) |
AT (1) | AT12789U1 (en) |
WO (1) | WO2011137474A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160131124A1 (en) * | 2014-11-10 | 2016-05-12 | Lg Electronics Inc. | Reciprocating compressor |
KR101854953B1 (en) * | 2014-11-10 | 2018-05-04 | 엘지전자 주식회사 | Reciprocating compressor |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101854933B1 (en) | 2013-04-24 | 2018-05-04 | 엘지전자 주식회사 | Muffler for compressor and compressor having the same |
AT14429U1 (en) | 2014-10-22 | 2015-11-15 | Secop Austria Gmbh | SUCTION SILENCER FOR A HERMETICALLY CAPACITATED REFRIGERANT COMPRESSOR |
KR101891928B1 (en) * | 2017-09-29 | 2018-08-24 | 엘지전자 주식회사 | Muffler for compressor |
CN216812061U (en) * | 2021-10-25 | 2022-06-24 | 思科普有限责任公司 | Discharge muffler of enclosed refrigerant compressor and enclosed refrigerant compressor |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4412791A (en) * | 1977-02-10 | 1983-11-01 | Copeland Corporation | Refrigeration compressor apparatus and method of assembly |
US5496156A (en) * | 1994-09-22 | 1996-03-05 | Tecumseh Products Company | Suction muffler |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1801721B1 (en) * | 1968-10-08 | 1970-10-01 | Danfoss As | Silencer for encapsulated refrigerant compressors |
JPS5614877A (en) * | 1979-07-13 | 1981-02-13 | Hitachi Ltd | Closed type motor compressor |
US4330239A (en) * | 1979-10-10 | 1982-05-18 | Tecumseh Products Company | Compressor muffler |
FR2532731B3 (en) * | 1982-09-02 | 1985-07-19 | Sanyo Electric Co | HERMETIC MOTOR COMPRESSOR GROUP |
US4821840A (en) * | 1988-01-20 | 1989-04-18 | Ap Parts Manufacturing Company | Stamp formed exhaust muffler with conformal outer shell |
BR8804016A (en) * | 1988-07-29 | 1990-03-20 | Brasil Compressores Sa | IMPROVEMENT IN THE SUCTION SYSTEM FOR THE HERMETIC COOLING COMPRESSOR |
BR9102288A (en) * | 1991-05-28 | 1993-01-05 | Brasileira S A Embraco Empresa | SUCTION DIFFERENT SET FOR HERMETIC COMPRESSOR |
US5205719A (en) * | 1992-01-13 | 1993-04-27 | Copeland Corporation | Refrigerant compressor discharge muffler |
BR0105694B1 (en) * | 2001-10-29 | 2009-05-05 | suction filter for reciprocating airtight compressor. | |
KR100504983B1 (en) * | 2003-03-12 | 2005-08-01 | 삼성광주전자 주식회사 | A suction muffler for compressor, A compressor and A apparatus having refrigerant cycle circuit |
KR20050063599A (en) * | 2003-12-22 | 2005-06-28 | 삼성광주전자 주식회사 | Hermetic compressor |
AT8401U1 (en) | 2005-03-31 | 2006-07-15 | Acc Austria Gmbh | REFRIGERANT COMPRESSOR |
DE102008014328B4 (en) * | 2008-03-14 | 2015-01-29 | Secop Gmbh | Suction muffler for a hermetically sealed refrigerant compressor |
-
2010
- 2010-05-04 AT ATGM290/2010U patent/AT12789U1/en not_active IP Right Cessation
-
2011
- 2011-05-04 EP EP11724515.9A patent/EP2567093B1/en active Active
- 2011-05-04 CN CN201180029958.8A patent/CN102971533B/en active Active
- 2011-05-04 US US13/695,881 patent/US20130330214A1/en not_active Abandoned
- 2011-05-04 WO PCT/AT2011/000213 patent/WO2011137474A2/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4412791A (en) * | 1977-02-10 | 1983-11-01 | Copeland Corporation | Refrigeration compressor apparatus and method of assembly |
US5496156A (en) * | 1994-09-22 | 1996-03-05 | Tecumseh Products Company | Suction muffler |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160131124A1 (en) * | 2014-11-10 | 2016-05-12 | Lg Electronics Inc. | Reciprocating compressor |
KR101854953B1 (en) * | 2014-11-10 | 2018-05-04 | 엘지전자 주식회사 | Reciprocating compressor |
US10180131B2 (en) * | 2014-11-10 | 2019-01-15 | Lg Electronics Inc. | Reciprocating compressor |
Also Published As
Publication number | Publication date |
---|---|
WO2011137474A2 (en) | 2011-11-10 |
AT12789U1 (en) | 2012-11-15 |
CN102971533B (en) | 2015-12-02 |
EP2567093A2 (en) | 2013-03-13 |
EP2567093B1 (en) | 2015-03-04 |
WO2011137474A3 (en) | 2012-02-23 |
CN102971533A (en) | 2013-03-13 |
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