EP3084214B1 - Electric fixing and connecting device of an hermetic compressor - Google Patents
Electric fixing and connecting device of an hermetic compressor Download PDFInfo
- Publication number
- EP3084214B1 EP3084214B1 EP14814861.2A EP14814861A EP3084214B1 EP 3084214 B1 EP3084214 B1 EP 3084214B1 EP 14814861 A EP14814861 A EP 14814861A EP 3084214 B1 EP3084214 B1 EP 3084214B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- rod
- connection
- compressor according
- earth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000003780 insertion Methods 0.000 claims description 33
- 230000037431 insertion Effects 0.000 claims description 33
- 239000004020 conductor Substances 0.000 claims description 21
- 239000012777 electrically insulating material Substances 0.000 claims description 5
- 230000005489 elastic deformation Effects 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 210000002105 tongue Anatomy 0.000 description 9
- 239000000463 material Substances 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Images
Classifications
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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
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0693—Details or arrangements of the wiring
-
- 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
-
- 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
- F04B39/14—Provisions for readily assembling or disassembling
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
-
- 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
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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
- F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
- F04C29/0085—Prime movers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
- H01R13/6392—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap for extension cord
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/652—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding with earth pin, blade or socket
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/73—Means for mounting coupling parts to apparatus or structures, e.g. to a wall
- H01R13/74—Means for mounting coupling parts in openings of a panel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
- H01R33/97—Holders with separate means to prevent loosening of the coupling or unauthorised removal of apparatus held
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
-
- 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
- F04C2240/00—Components
- F04C2240/30—Casings or housings
-
- 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
- F04C2240/00—Components
- F04C2240/80—Other components
- F04C2240/803—Electric connectors or cables; Fittings therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/16—Fastening of connecting parts to base or case; Insulating connecting parts from base or case
Definitions
- the invention relates to the electrical connection of a hermetic compressor for example used for domestic or commercial refrigeration and air conditioning.
- a compressor is used to compress a refrigerant before circulating it in an exchanger for cooling the fluid in contact with a hot source.
- Compressors of various types for example reciprocating or rotary, are known.
- the compressor is for example driven by an electric motor and the assembly formed by the compressor and the motor is called motorcycle compressor.
- the compressor and the motor associated with it are commonly encapsulated in an airtight envelope.
- the component thus produced is subsequently called a hermetic compressor.
- the electrical connection of the motor passes through the hermetic envelope and the hermetic compressor is delivered with several terminals coming out of the envelope on which a power cable is connected during the installation of the thermodynamic machine.
- Such a hermetic compressor is for example known from the document EP 0 422 336 A1 .
- a ground connection means connected to a particular terminal through the envelope, makes it possible to connect the equipment to a ground connection provided by the power supply network of the equipment.
- This terminal is connected to a specific electrical conductor of the power cable.
- This specific conductor is usually insulated with a special green and yellow color insulator. To ensure the proper connection of the specific conductor to the earth terminal, it implements a particular means of connection distinct from the connection means of the other conductors of the power cable carrying the electrical power.
- the power conductors are terminated by lugs simply plugged into the power terminals and the grounding conductor is terminated by a lug screwed to the ground terminal.
- connection of the various conductors of the cable to the terminals through the envelope of the hermetic compressor is subject to error which can cause an immediate or short term destruction of the compressor.
- connection time may be more or less important depending on the accessibility of the connection terminals in the equipment.
- the invention aims to make reliable the connection of the cable on the terminals of the compressor.
- the invention also aims to improve the speed of connection of the cable.
- the subject of the invention is a hermetic compressor comprising a motor pump unit, a hermetic envelope and electrical connection means, the motorcycle pump unit being disposed inside the hermetic envelope, the connection means enabling the power supply of the pump motor unit through the hermetic envelope, the connection means comprising an earth rod and at least two power supply terminals, the connection means comprising a mobile housing and a power cable, the housing being arranged at the end of the cable, the connection of the housing on the earth rod and on the supply terminals being effected by a translation movement, in one direction of insertion, the connection of the housing to the earth rod comprising anti-back means preventing movement of the housing in a direction opposite to the direction of insertion, the earth rod being formed of a rod extending out of the sealed envelope only in a direction carrying the direction of insertion, characterized in that the housing comprises a one-piece mechanical part intended to ensure the connection of the housing to the earth rod, in that the housing comprises two parts: a base and a cover, in that the mechanical part is
- the antireturn means prohibit the movement of the housing in a direction opposite to the direction of insertion, only by means of traction on the housing and allow movement of the housing, in a direction opposite to the direction of insertion, combining the traction in a direction opposite to the direction of insertion with another maneuver distinct from the traction.
- This embodiment can be implemented independently of the fact that the mechanical connection piece is monobloc and independently of the presence of two parts: base and cover, forming the housing.
- the figure 1 represents a hermetic compressor 10 comprising a hermetic envelope 11 and a motor pump unit not visible in the figure because disposed inside the hermetic envelope 11.
- the compressor hermetic 10 also includes connection means 12 for supplying power to the pump motor unit through the sealed envelope 11.
- the connection means 12 comprising a ground rod 13 and at least two power supply terminals.
- the connection means 12 comprise three supply terminals 14, 15 and 16 passing through the hermetic enclosure 11. Two of the terminals are intended to receive a phase and the third electrical connection terminal can receive one of the phases of the power supply network in the case of three-phase.
- one of the three connections can be connected to a thermal protection component which will be described later.
- the other two terminals are connected to a complementary electrical equipment, not shown, situated outside the hermetic compressor 10 and making it possible, for example, to generate an auxiliary phase that is useful for determining the direction of rotation of the motorcycle pump unit during its start-up.
- the earth rod 13 is intended to receive a protective earth delivered by the electrical network.
- connection means 12 comprise a mobile housing 20 and a power supply cable 21, the housing 20 being disposed at one end of the cable 21.
- the cable 21 comprises, for example, four insulated conductors conveying the power supply to the compressor 10.
- connection of the housing 20 on the earth rod 13 and on the supply terminals 14, 15 and 16 is in a translational movement, in a direction of insertion marked by an arrow 22.
- the figure 2 represents in section the housing 20 connected to its power supply terminals 13, 14 and 16.
- connection of the housing 20 to the earth rod 13 comprises antirust means preventing movement of the housing 20 in a direction opposite to the direction of insertion 22.
- connection of the casing 20 to the earth rod 13 may comprise means of buttressing on the earth rod 13.
- the bracing on the earth rod 13 makes it possible to simply perform the non-return of the casing 20.
- the earth rod 13 is conventionally formed of a stud or a threaded rod, a threaded part of which extends out of the hermetic envelope 11 in a direction bearing the direction 22. It is also possible to form the earth rod 13 by means of a smooth rod coming out of the hermetic envelope 11.
- the electrical connection can be provided by means of a lug designed to surround the earth rod 13 and comprising elastic means ensuring a force of the lug on the rod 13 perpendicular to the direction bearing the direction 22.
- the mechanical connection can be ensured by a pivoting element relative to the lug and bearing against the lug.
- the anti-return can be provided by gravity by providing a pivot axis of the pivoting element disposed lower than the point of contact between the pivoting element and the rod 13.
- the pivoting element by example of circular shape slides against the rod 13 without opposing mechanical strength, except a slight friction.
- the circular element is bent on the rod 13 and thus opposing a force proportional to the force exerted to try to uncouple the housing 20.
- connection of the housing 20 to the earth rod 13 is defined so that a disconnection using only traction in a direction opposite to the direction of insertion 22 is destructive of the connection on the rod of 13.
- the bracing or more precisely the relative position of the pivot axis and the point of contact of the pivoting element so as to calibrate a force allowing the disconnection of the housing, for example by deformation of the circular-shaped fastening element.
- the electrical and mechanical connections to the earth rod 13 are provided by a one-piece mechanical part 30.
- the housing 20 comprises a one-piece mechanical part intended to connect the housing 20 to the earth rod 13.
- the mechanical part 30 is integral with the housing 20.
- the figure 3 represents piece 30 alone.
- the piece 30, connected to the earth rod 13, is also visible on the figure 2 .
- the one-piece mechanical part 30 comprises a washer 31 pierced extending in a plane 32.
- the washer 31 is intended to surround the rod 13 so that the plane 32 of the washer 31 is placed perpendicular to the direction bearing the direction 22 , the terminal 13 entering the bore 34 of the washer 31.
- the washer 31 is equipped with at least one radial fin 33 partially closing the bore 34 of the washer 31, so as to fit tightly on the rod 13 .
- the washer 31 comprises several symmetrical fins 33.
- the washer 31 comprises six fins 33 extending symmetrically about the direction bearing the direction 22.
- the fins 33 are inclined relative to the plane 32 of the washer 31 so as to increase their inclination during the insertion by elastic deformation.
- the elastic deformation of the or fins 33 ensure a clamping of the washer 31 on the rod 13 and therefore the electrical connection between the washer and the rod 13
- we try to disconnect the housing 20 by exerting on the washer 31 a force in a direction opposite to the direction 22, or the fins 33 bearing on the rod 13, tend to see their inclination to be reduced which increases the clamping force of the washer 31 on the rod 13.
- the tearing of the housing 20 to disconnect can also break the attachment of the piece 30 in the housing 20.
- the housing 20 is for example made of plastic material obtained by molding. Grooves made in the housing 20 and in the plane 32 may serve to anchor the workpiece 30. The disconnection of the housing may for example break the grooves and thus break the anchoring of the workpiece 30 in the housing 20.
- the housing 20 and the power cable 21 at the end of which is disposed the housing 20 can be made in the factory thus avoiding any risk of poor connection of the cable 21 on the various terminals out of the sealed envelope 11. It can be necessary to intervene on site during the use of the equipment to repair the wiring.
- the housing 20 comprises two parts: a base 37 and a cover 38.
- the mechanical part 30 is integral with the base 37.
- the cover 38 can be removably attached to the base 37.
- the removable attachment is realized for example by screws or by clipping.
- the base 37 is made of an electrically insulating material so as to avoid any electrical contact between the components situated inside the casing 20 and the hermetic envelope 11. More generally, the casing 20 comprises an electrically insulating material arranged in order to avoid any electrical contact between components inside the housing 20 and the hermetic envelope 11.
- the figures 4 and 5 represent in perspective the inside of the housing 20, the hood 38 being open on the figure 4 and the hood being removed on the figure 5 .
- the cable 21 comprises an electrical earth conductor 40 terminating in a ground lug 41.
- the one-piece mechanical part 30 comprises a tongue 42 on which the earth lug 41 is plugged. The tongue 42 and the lug 41 enable intervene on the earth connection after opening the housing 20.
- the tongue 42 may have a width of 6.3 mm which can accommodate a lug 41 that can be easily obtained from connector manufacturers.
- the lug 41 can be crimped or welded on the end of the grounding conductor 40.
- the piece 30 has shapes defined so as to be formed in a folded sheet of constant thickness. These forms are clearly visible on the figure 3 .
- the tongue 42 must have a thickness of about 0.8 mm. It is understood that the values given for the dimensions of the lug 41 are only examples. Any other value is possible without departing from the scope of the invention. Nevertheless, depending on the material used to make the part 30, the thickness necessary for producing the washer 31 and in particular the fins 33, may be different from the thickness of the tongue 42. To adapt to the divergent stresses of the thickness of the washer 31 and the tongue 42, the tongue 42 comprises two folds 43 and 44 to increase its functional thickness vis-à-vis the lug 41. To resume the example of dimension given above, we can achieve the piece 30 in a 0.4 mm thick sheet while connecting a lug 41 provided for a tongue of 0.8 mm.
- connection means 12 comprise three supply terminals 14, 15 and 16 passing through the sealed envelope 11.
- the supply terminals 14, 15 and 16 each comprise, for example, a power supply tab. extending in the direction of insertion 22. To avoid overloading the figures, the tabs will bear the same marks as the terminals 14, 15 and 16.
- the cable 21 comprises the earth conductor 40 and at least two electrical supply conductors 47 and 48 each terminating in a lug, respectively 50 and 51, each of which is to be plugged onto one of the supply tongues 15 or 16 when the housing 20 is connected,
- the figure 6 represents the housing 20 open in position on the compressor.
- the housing 20 comprises a thermal protection component 55 of the compressor 10.
- the supply terminals comprise a protection tab 14 extending in the direction of insertion 22.
- the thermal protection component 55 comprises an electrical conductor 56 terminating in a lug 57 intended to be plugged onto the protection tab 14.
- the cable 21 comprises a third electrical conductor supply 49 ending in a lug 52.
- the cable 21 thus comprises four conductors: the earth conductor 40 and the three electrical supply conductors 47, 48 and 49.
- the electrical conductor 49 is is plugged onto a tab 58 belonging to the thermal protection component 55.
- the anti-return effect is effective when an operator tries to remove the housing 20 by exerting a pull in a direction opposite to the direction of insertion 22 on the housing 20. It is however possible to configure the antiretor means to allow disengagement of those by means of a complementary maneuver distinct from a traction in a direction opposite to the direction of insertion 22.
- This complementary maneuver can for example be obtained by inserting a tool in the housing 20 through an orifice provided for this purpose.
- the tool may for example be a screwdriver with a flat blade sliding between a fin 33 and the rod 13.
- the figure 7 represents a one-piece piece 60 forming an alternative to the part 30 further allowing the disengagement of the connection.
- the part 60 comprises alternative means to the use of a tool sliding between a fin 33 and the rod 13 allowing by a pressure or traction movement the disconnection without causing the destruction of the part 60.
- the piece 60 comprises a washer 61 pierced similar to the washer 31.
- the washer 61 extends in a plane 62 and is intended to surround the rod 13 when connecting the housing 20 on the rod 13.
- the washer 61 is equipped with at least one radial fin 63 partially occluding the bore 64 of the washer 61, so as to fit tightly on the rod 13.
- the washer 61 comprises several symmetrical fins 63, 4 in the example shown.
- the fins 63 are inclined relative to the plane 62 of the washer 61 so as to increase their inclination by elastic deformation during insertion on the rod 13.
- the fins 63 are arranged in pairs each of the pairs of fins 63 coming to rest substantially as diametrically opposed on the rod 13. As previously a simple traction on the part 60 in a direction opposite to the direction 22, tends to increase the clamping force of the washer 61 on the rod 13 by buttressing the fins 63 on the stem 13.
- connection of the housing 20 to the rod 13 comprises means for releasing the bracing by means of a maneuver distinct from the traction in a direction opposite to the direction of insertion 22.
- the one-piece piece 60 comprises at least one flange 65, two flanges 65 in the example shown, which can be operated in order to move the fins 63 away from the rod 13.
- the flanges 65 form outgrowths extending to the outside of the washer 61.
- Each wing 65 is associated with a pair of fins 63.
- Each wing 65 comprises a bearing zone, such as a hole 66 allowing a tool to pull the wing 65 perpendicularly. In the insertion direction 22, it is possible, for example, to use a circlip pliers having two fingers, each of which fits in one of the holes 66.
- the washer 61 By operating the circlip plier so as to move the holes from the rod 13, the washer 61 is deformed and the fins 63 deviate from the rod 13 by following the movement of the wings 65.
- the wings 65 may each comprise a shoulder on which can be supported a tool adapted to locally deform the washer 61 into the improvisationan t of the rod 13. The deformation of the washer 61 is in the plane 62.
- each of the flanges 65 is configured in such a way that a pressure on the wing 65 allows to separate the corresponding fins 63 of the rod 13.
- fins 70 can participate in the centering of the bore 64 on the rod 13.
- the fins 63 and 70 are distributed around the center of the bore 64 intended to coincide with the axis of the rod 13.
- the fins 70 each comprise a free end 71 bent outwards in order to avoid a jamming on the rod by allowing the fin 70 to slide against the rod when the casing 20 of the rod 13 is disconnected.
- the operation of deformation of the washer 61 is performed after removing the cover 38 in order to access the part 60. It is then sufficient to pull the base 37 in the opposite direction to the direction 22 to disconnect the housing 20.
- the figure 8 represents the base 37 and the part 60 in position in the base 37.
- the base 37 is configured to allow access to the wings 65.
- the part 60 may comprise other wings 72 extending from the washer 61 to the outside. The wings 72 enabling the part 60 to be held in position in the base 37.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Description
L'invention concerne le raccordement électrique d'un compresseur hermétique par exemple utilisé pour la réfrigération domestique ou commerciale et le conditionnement de l'air.The invention relates to the electrical connection of a hermetic compressor for example used for domestic or commercial refrigeration and air conditioning.
De façon plus générale, dans une machine thermodynamique, un compresseur est utilisé pour comprimer un fluide frigorigène avant de le faire circuler dans un échangeur permettant de refroidir le fluide au contact d'une source chaude.More generally, in a thermodynamic machine, a compressor is used to compress a refrigerant before circulating it in an exchanger for cooling the fluid in contact with a hot source.
On connaît des compresseurs de divers types, par exemple alternatifs ou rotatifs. Le compresseur est par exemple entrainé par un moteur électrique et l'ensemble formé par le compresseur et le moteur est appelé moto compresseur. Dans les machines frigorifiques, le compresseur et le moteur qui lui est associé est couramment encapsulé dans une enveloppe hermétique. Le composant ainsi réalisé est appelé par la suite compresseur hermétique. Le raccordement électrique du moteur traverse l'enveloppe hermétique et le compresseur hermétique est livré avec plusieurs bornes sortant de l'enveloppe sur lesquelles on raccorde un câble d'alimentation lors de l'installation de la machine thermodynamique. Un tel compresseur hermétique est par exemple connu du document
Cette borne, appelée borne de terre, est raccordée à un conducteur électrique spécifique du câble d'alimentation. Ce conducteur spécifique est généralement isolé au moyen d'un isolant de couleur particulière vert et jaune. Pour s'assurer de la bonne connexion du conducteur spécifique à la borne de terre, on met en oeuvre un moyen particulier de connexion distincte des moyens de connexion des autres conducteurs du câble d'alimentation véhiculant la puissance électrique. Par exemple, les conducteurs de puissance sont terminés par des cosses simplement enfichés sur les bornes d'alimentation et le conducteur de terre est terminé par une cosse vissée sur la borne de masse.This terminal, called the earth terminal, is connected to a specific electrical conductor of the power cable. This specific conductor is usually insulated with a special green and yellow color insulator. To ensure the proper connection of the specific conductor to the earth terminal, it implements a particular means of connection distinct from the connection means of the other conductors of the power cable carrying the electrical power. By for example, the power conductors are terminated by lugs simply plugged into the power terminals and the grounding conductor is terminated by a lug screwed to the ground terminal.
Le raccordement des différents conducteurs du câble sur les bornes traversant l'enveloppe du compresseur hermétique est sujet à erreur ce qui peut provoquer une destruction immédiate ou à court terme du compresseur.The connection of the various conductors of the cable to the terminals through the envelope of the hermetic compressor is subject to error which can cause an immediate or short term destruction of the compressor.
De plus, le temps de raccordement peut être plus ou moins important suivant l'accessibilité des bornes de connexion dans l'équipement.In addition, the connection time may be more or less important depending on the accessibility of the connection terminals in the equipment.
L'invention vise à fiabiliser le raccordement du câble sur les bornes du compresseur. L'invention vise également à améliorer la rapidité de connexion du câble.The invention aims to make reliable the connection of the cable on the terminals of the compressor. The invention also aims to improve the speed of connection of the cable.
A cet effet, l'invention a pour objet un compresseur hermétique comprenant un groupe moto pompe, une enveloppe hermétique et des moyens de connexion électriques, le groupe moto pompe étant disposé à l'intérieur de l'enveloppe hermétique, les moyens de connexion permettant l'alimentation électrique du groupe moto pompe en traversée de l'enveloppe hermétique, les moyens de connexion comprenant une tige de terre et au moins deux bornes d'alimentation, les moyens de connexion comprennant un boîtier mobile et un câble d'alimentation, le boîtier étant disposé à l'extrémité du câble, la connexion du boitier sur la tige de terre et sur les bornes d'alimentation se faisant par un mouvement de translation, suivant un sens d'insertion, la connexion du boîtier sur la tige de terre compreannant des moyens antiretours interdisant le mouvement du boîtier dans un sens opposée au sens d'insertion, la tige de terre étant formée d'une tige s'étendant hors de l'enveloppe hermétique dans une direction portant le sens d'insertion, caractérisé en ce que le boîtier comprend une pièce mécanique monobloc destinée à assurer la connexion du boîtier sur la tige de terre, en ce que le boîtier comprend deux parties : une embase et un capot, en ce que la pièce mécanique est solidaire de l'embase, en ce que le capot est fixé de façon amovible sur l'embase et en ce que l'embase est réalisée dans un matériau isolant électriquement de façon à éviter tout contact électrique entre des composants situés à l'intérieur du boîtier et l'enveloppe hermétique.For this purpose, the subject of the invention is a hermetic compressor comprising a motor pump unit, a hermetic envelope and electrical connection means, the motorcycle pump unit being disposed inside the hermetic envelope, the connection means enabling the power supply of the pump motor unit through the hermetic envelope, the connection means comprising an earth rod and at least two power supply terminals, the connection means comprising a mobile housing and a power cable, the housing being arranged at the end of the cable, the connection of the housing on the earth rod and on the supply terminals being effected by a translation movement, in one direction of insertion, the connection of the housing to the earth rod comprising anti-back means preventing movement of the housing in a direction opposite to the direction of insertion, the earth rod being formed of a rod extending out of the sealed envelope only in a direction carrying the direction of insertion, characterized in that the housing comprises a one-piece mechanical part intended to ensure the connection of the housing to the earth rod, in that the housing comprises two parts: a base and a cover, in that the mechanical part is integral with the base, in that the cover is removably attached to the base and in that the base is made of an electrically insulating material so as to avoid any electrical contact between components inside the housing and the airtight envelope.
Dans un mode de réalisation préféré, les moyens antiretours interdisent le mouvement du boîtier dans un sens opposé au sens d'insertion, uniquement au moyen d'une traction sur le boitier et autorisent le mouvement du boîtier, dans un sens opposée au sens d'insertion, en combinant la traction dans un sens opposée au sens d'insertion avec une autre manoeuvre distincte de la traction. Ce mode de réalisation peut être mis en oeuvre indépendamment du fait que la pièce mécanique de connexion soit monobloc et indépendamment de la présence de deux parties : embase et capot, formant le boitier.In a preferred embodiment, the antireturn means prohibit the movement of the housing in a direction opposite to the direction of insertion, only by means of traction on the housing and allow movement of the housing, in a direction opposite to the direction of insertion, combining the traction in a direction opposite to the direction of insertion with another maneuver distinct from the traction. This embodiment can be implemented independently of the fact that the mechanical connection piece is monobloc and independently of the presence of two parts: base and cover, forming the housing.
L'invention sera mieux comprise et d'autres avantages apparaîtront à la lecture de la description détaillée d'un mode de réalisation donné à titre d'exemple, description illustrée par le dessin joint dans lequel :
- la
figure 1 représente en perspective une partie de l'enveloppe d'un compresseur hermétique selon l'invention ainsi qu'à distance, un boîtier formant l'extrémité d'un câble d'alimentation ; - la
figure 2 représente en coupe l'enveloppe du compresseur et le boîtier raccordé sur des bornes du compresseur ; - la
figure 3 représente une pièce destinée à assurer la connexion du boîtier sur une tige qui constitue un moyen de fixation et joue le rôle de connexion électrique de terre du compresseur ; - les
figures 4 et5 représentent en perspective l'intérieur du boîtier ; - la
figure 6 représente le boîtier ouvert en position sur le compresseur ; - la
figure 7 représente une variante optimisée de la pièce représentéefigure 3 ; - la
figure 8 représente la pièce de lafigure 7 montée dans le boitier en position ouverte.
- the
figure 1 represents in perspective a portion of the envelope of a hermetic compressor according to the invention and remotely, a housing forming the end of a power cable; - the
figure 2 represents in section the envelope of the compressor and the housing connected to terminals of the compressor; - the
figure 3 represents a piece intended to connect the housing to a rod which constitutes a fixing means and acts as an electrical ground connection of the compressor; - the
figures 4 and5 represent in perspective the inside of the case; - the
figure 6 represents the open housing in position on the compressor; - the
figure 7 represents an optimized variant of the piece representedfigure 3 ; - the
figure 8 represents the piece of thefigure 7 mounted in the case in open position.
Par souci de clarté, les mêmes éléments porteront les mêmes repères dans les différentes figures.For the sake of clarity, the same elements will bear the same references in the different figures.
La
Alternativement, en monophasé, l'une des trois connexions peut être raccordée à un composant de protection thermique qui sera décrit ultérieurement. Dans ce cas, les deux autres bornes sont raccordées à un équipement électrique complémentaire non représenté, situé à l'extérieur du compresseur hermétique 10 et permettant par exemple de générer une phase auxiliaire utile pour déterminer le sens de rotation du groupe moto pompe lors de son démarrage. La tige de terre 13 est destinée à recevoir une terre de protection délivrée par le réseau électrique.Alternatively, in single phase, one of the three connections can be connected to a thermal protection component which will be described later. In this case, the other two terminals are connected to a complementary electrical equipment, not shown, situated outside the
Les moyens de connexion 12 comprennent un boîtier mobile 20 et un câble d'alimentation 21, le boîtier 20 étant disposé à une extrémité du câble 21. Le câble 21 comprend par exemple quatre conducteurs isolés véhiculant l'alimentation électrique du compresseur 10.The connection means 12 comprise a
La connexion du boitier 20 sur la tige de terre 13 et sur les bornes d'alimentation 14, 15 et 16 se fait dans un mouvement de translation, suivant un sens d'insertion repéré par une flèche 22.The connection of the
La
La connexion du boîtier 20 sur la tige de terre 13 comprend des moyens antiretours interdisant le mouvement du boîtier 20 dans un sens opposée au sens d'insertion 22.The connection of the
La connexion du boîtier 20 sur la tige de terre 13 peut comprendre des moyens d'arc-boutement sur la tige de terre 13. L'arc-boutement sur la tige de terre 13 permet de réaliser simplement l'antiretour du boîtier 20.The connection of the
La tige de terre 13 est classiquement formée d'un goujon ou d'une tige filetée dont une partie filetée s'étend hors de l'enveloppe hermétique 11 dans une direction portant le sens 22. Il est également possible de former la tige de terre 13 à l'aide d'une tige lisse sortant de l'enveloppe hermétique 11.The
Il est possible de différencier la connexion électrique sur la tige de terre et la connexion mécanique comprenant les moyens antiretours. La connexion électrique peut être assurée au moyen d'une cosse destinée à entourer la tige de terre 13 et comprenant des moyens élastiques assurant un effort de la cosse sur la tige 13 perpendiculairement à la direction portant le sens 22. La connexion mécanique peut être assurée par un élément pivotant par rapport à la cosse et venant en appui contre la cosse. L'antiretour peut être assuré par gravité en prévoyant un axe de pivotement de l'élément pivotant disposé plus bas que le point de contact entre l'élément pivotant et la tige 13. Ainsi, lors de l'insertion, l'élément pivotant par exemple de forme circulaire glisse contre la tige 13 sans opposer de résistance mécanique, sauf un léger frottement. Par contre, si on tente un mouvement inverse, l'élément circulaire s'arc-boute sur la tige 13 opposant ainsi un effort proportionnel à l'effort exercé pour tenter de désaccoupler le boîtier 20.It is possible to differentiate the electrical connection on the earth rod and the mechanical connection including the means antiretours. The electrical connection can be provided by means of a lug designed to surround the
Avantageusement, la connexion du boîtier 20 sur la tige de terre 13 est définie de façon à ce qu'une déconnexion ne mettant en oeuvre qu'une traction dans un sens opposée au sens d'insertion 22 soit destructrice de la connexion sur la tige de terre 13. Lorsque la connexion mécanique et la connexion électrique sont dissociées, il est possible de définir l'arc-boutement ou plus précisément la position relative de l'axe de pivotement et le point de contact de l'élément pivotant de façon calibrer un effort permettant la déconnection du boîtier, par exemple par déformation de l'élément de fixation de forme circulaire. Il est également possible de définir un effort suffisamment élevé pour dépasser le domaine élastique et entrer dans le domaine de déformation plastique voire entrainer la rupture de la cosse destinée à assurer la connexion sur la tige de terre 13. Une déformation permanente ou une rupture permettra de prouver la déconnexion du boîtier 20.Advantageously, the connection of the
Alternativement, dans une variante préférée de l'invention, les connexions électrique et mécanique à la tige de terre 13 sont assurées par une pièce mécanique monobloc 30. Autrement dit, le boîtier 20 comprend une pièce mécanique monobloc destinée à assurer la connexion du boîtier 20 sur la tige de terre 13. La pièce mécanique 30 est solidaire du boîtier 20.Alternatively, in a preferred variant of the invention, the electrical and mechanical connections to the
La
La pièce mécanique monobloc 30 comprend une rondelle 31 percée s'étendant dans un plan 32. La rondelle 31 est destinée à entourer la tige 13 de façon à ce que le plan 32 de la rondelle 31 se place perpendiculairement à la direction portant le sens 22, la borne 13 entrant dans le perçage 34 de la rondelle 31. La rondelle 31 est équipée d'au moins une ailette radiale 33 obturant partiellement le perçage 34 de la rondelle 31, de façon à s'ajuster de façon serrée sur la tige 13.The one-piece
Avantageusement, la rondelle 31 comprend plusieurs ailettes 33 symétriques. Dans l'exemple représenté sur la
La ou les ailettes 33 sont inclinées par rapport au plan 32 de la rondelle 31 de façon augmenter leur inclinaison lors de l'insertion par déformation élastique. Ainsi, à la fin de l'insertion de la rondelle sur la tige 13, la déformation élastique de la ou des ailettes 33 assurent un serrage de la rondelle 31 sur la tige 13 et par conséquent la connexion électrique entre la rondelle et la tige 13. De plus, si on tente de déconnecter le boitier 20 en exerçant sur la rondelle 31 un effort selon un sens opposé au sens 22, la ou les ailettes 33 prenant appui sur la tige 13, tendent à voir leur inclinaison se réduire ce qui augmente l'effort de serrage de la rondelle 31 sur la tige 13. Ceci crée un arc-boutement de la rondelle 31 sur la tige 13 qui empêche la déconnexion du boîtier 20, assurant ainsi l'effet antiretour interdisant le mouvement du boîtier 20 dans un sens opposée au sens d'insertion 22. En augmentant l'effort de déconnexion, il est tout de même possible d'arracher le boîtier 20. Lors de cet arrachement, la ou les ailettes 33 se déforment en inversant leur inclinaison, ce qui peut, en fonction du matériau choisi pour la rondelle, soit déformer de façon irrémédiables la ou les ailettes 33, soit les rompre si le matériau de la rondelle ne possède qu'un faible domaine de déformation plastique. Ceci est par exemple le cas pour un acier trempé à fort pourcentage de carbone. La pièce mécanique 30 est solidaire du boîtier 20. L'arrachement du boîtier 20 pour le déconnecter peut également rompre la fixation de la pièce 30 dans le boîtier 20. Le boîtier 20 est par exemple réalisé en matière plastique obtenu par moulage. Des rainures réalisées dans le boîtier 20 et dans le plan 32 peuvent servir d'encrage à la pièce 30. La déconnexion du boîtier peut par exemple rompre les rainures et donc rompre l'ancrage de la pièce 30 dans le boîtier 20.The
Le boîtier 20 et le câble d'alimentation 21 à l'extrémité duquel est disposé le boîtier 20 peuvent être réalisés en usine évitant ainsi tout risque de mauvaise connexion du câble 21 sur les différentes bornes sortant de l'enveloppe hermétique 11. Il peut être nécessaire d'intervenir sur site pendant l'utilisation de l'équipement pour réparer le câblage. A cet effet, le boîtier 20 comprend deux parties : une embase 37 et un capot 38. La pièce mécanique 30 est solidaire de l'embase 37. Le capot 38 peut être fixé de façon amovible sur l'embase 37. La fixation amovible est réalisée par exemple par vis ou par clippage.The
L'embase 37 est réalisée dans un matériau isolant électriquement de façon à éviter tout contact électrique entre les composants situés à l'intérieur du boîtier 20 et l'enveloppe hermétique 11. De façon plus générale, le boîtier 20 comprend un matériau isolant électriquement disposé de façon à éviter tout contact électrique entre des composants situés à l'intérieur du boîtier 20 et l'enveloppe hermétique 11.The
Les
La languette 42 peut avoir une largeur de 6,3 mm ce qui permet d'accueillir une cosse 41 que l'on peut se procurer facilement chez des fabricants de connecteurs. La cosse 41 peut être sertie ou soudée sur l'extrémité du conducteur de terre 40.The
Avantageusement, la pièce 30 possède des formes définies de façon à pouvoir être formées dans une tôle pliée d'épaisseur constante. Ces formes sont bien visibles sur la
Pour accueillir une cosse 41 classique, la languette 42 doit avoir une épaisseur de l'ordre de 0,8 mm. Il est bien entendu que les valeurs données pour les dimensions de la cosse 41 ne sont que des exemples. Toute autre valeur est possible sans sortir du cadre de l'invention. Néanmoins, en fonction du matériau retenu pour réaliser la pièce 30, l'épaisseur nécessaire pour la réalisation de la rondelle 31 et notamment des ailettes 33, peut être différente de l'épaisseur de la languette 42. Pour s'adapter aux contraintes divergentes d'épaisseur de la rondelle 31 et de la languette 42, la languette 42 comprend deux plis 43 et 44 permettant d'augmenter son épaisseur fonctionnelle vis-à-vis de la cosse 41. Pour reprendre l'exemple de dimension donné plus haut, on peut réaliser la pièce 30 dans une tôle d'épaisseur 0,4 mm tout en y raccordant une cosse 41 prévue pour une languette de 0,8 mm.To accommodate a
On a vu plus haut que les moyens de connexion 12 comprennent trois bornes d'alimentation 14, 15 et 16 traversant l'enveloppe hermétique 11. Les bornes d'alimentation 14, 15 et 16 comprennent par exemple chacune une languette d'alimentation s'étendant suivant la direction d'insertion 22. Pour ne pas surcharger les figures, les languettes porteront les mêmes repères que les bornes 14, 15 et 16. Le câble 21 comprend le conducteur de terre 40 et au moins deux conducteurs électriques d'alimentation 47 et 48 se terminant chacun par une cosse, respectivement 50 et 51 destinée à s'enficher chacune sur une des languettes d'alimentation 15 ou 16 lors de la connexion du boîtier 20,It has been seen above that the connection means 12 comprise three
La
L'effet antiretour est effectif lorsqu'un opérateur tente de retirer le boitier 20 en exerçant une traction dans un sens opposée au sens d'insertion 22 sur le boitier 20. Il est toutefois possible de configurer les moyens antiretours pour permettre un désengagement de ceux-ci au moyen d'une manoeuvre complémentaire distincte d'une traction dans un sens opposée au sens d'insertion 22.The anti-return effect is effective when an operator tries to remove the
Cette manoeuvre complémentaire peut par exemple être obtenue en insérant un outil dans le boitier 20 par un orifice prévu à cet effet. L'outil peut par exemple être un tournevis à lame plate se glissant entre une ailette 33 et la tige 13.This complementary maneuver can for example be obtained by inserting a tool in the
La
La pièce 60 comprend une rondelle 61 percée semblable à la rondelle 31. La rondelle 61 s'étend dans un plan 62 et est destinée à entourer la tige 13 lors de la connexion du boitier 20 sur la tige 13. La rondelle 61 est équipée d'au moins une ailette radiale 63 obturant partiellement le perçage 64 de la rondelle 61, de façon à s'ajuster de façon serrée sur la tige 13. Ici encore, la rondelle 61 comprend plusieurs ailettes 63 symétriques, 4 dans l'exemple représenté. Les ailettes 63 sont inclinées par rapport au plan 62 de la rondelle 61 de façon augmenter leur inclinaison par déformation élastique lors de l'insertion sur la tige 13. Les ailettes 63 sont disposées par paires chacune des paires d'ailettes 63 venant s'appuyer sensiblement de façon diamétralement opposée sur la tige 13. Comme précédemment une simple traction sur la pièce 60 selon un sens opposé au sens 22, tend à augmenter l'effort de serrage de la rondelle 61 sur la tige 13 en arc-boutant les ailettes 63 sur la tige 13.The
La connexion du boîtier 20 sur la tige 13 comprend des moyens pour libérer l'arc-boutement au moyen d'une manoeuvre distincte de la traction dans un sens opposé au sens d'insertion 22.The connection of the
Dans l'exemple représenté, la pièce monobloc 60 comprend au moins une aile 65, deux ailes 65 dans l'exemple représenté, pouvant être manoeuvrées afin d'écarter les ailettes 63 de la tige 13. Les ailes 65 forment des excroissances s'étendant vers l'extérieur de la rondelle 61. Chaque aile 65 est associée à une paire d'ailettes 63. Chaque aile 65 comprend une zone d'appui, comme par exemple un trou 66 permettant à un outil de tirer sur l'aile 65 perpendiculairement au sens d'insertion 22. Il est par exemple possible d'utiliser une pince à circlips possédant deux doigts venant chacun dans un des trous 66. En manoeuvrant la pince à circlips de façon à écarter les trous de la tige 13, la rondelle 61 se déforme et les ailettes 63 s'écartent de la tige 13 en suivant le mouvement des ailes 65. Alternativement aux trous 66, les ailes 65 peuvent comprendre chacune un épaulement sur lequel peut s'appuyer un outil adapté pour déformer localement la rondelle 61 en l'écartant de la tige 13. La déformation de la rondelle 61 se fait dans le plan 62.In the example shown, the one-
Alternativement, il est possible de déformer localement la rondelle 61 par torsion autour d'un axe 67 perpendiculaire au sens d'insertion 22. Cette torsion peut être réalisée en appuyant sur chacune des ailes 65 dans le sens 22 comme représenté sur la
D'autres ailettes 70 peuvent participer au centrage du perçage 64 sur la tige 13. Les ailettes 63 et 70 sont réparties autour du centre du perçage 64 destiné à coïncider avec l'axe de la tige 13. A la différence des ailettes 63, les ailettes 70 comprennent chacune une extrémité libre 71 recourbée vers l'extérieur afin d'éviter un arc-boutement sur la tige en permettant à l'ailette 70 de glisser contre la tige lorsqu'on déconnecte le boitier 20 de la tige 13.
L'opération de déformation de la rondelle 61 est réalisée après avoir retiré le capot 38 afin d'accéder à la pièce 60. Il suffit alors de tirer l'embase 37 dans les sens opposé au sens 22 pour déconnecter le boitier 20.The operation of deformation of the
La
Claims (16)
- A sealed compressor (10) comprising a motor pump unit, a hermetic casing (11) and means of electrical connection (12), the motor pump unit being positioned inside the hermetic casing (11), the connection means (12) allowing the motor pump unit to be powered electrically through the hermetic casing (11), the connection means (12) comprising an earth rod (13) and at least two power supply terminals (14, 15, 16), the connection means (12) comprising a mobile housing (20) and a power supply cable (21), the housing (20) being arranged at the end of the cable (21), connection of the housing (20) to the earth rod (13) and to the power supply terminals (14, 15, 16) being achieved by a translational movement in a direction of insertion (22), connection of the housing (20) to the earth rod (13) comprising non-return means (31) that prevent the housing (20) from moving in an opposite direction to the direction of insertion (22), the earth rod (13) being formed of a rod extending outside of the hermetic casing (11) in a direction corresponding to the direction of insertion (22), characterised in that the housing (20) comprises a one-piece mechanical part (30; 60) intended to ensure the connection of the housing (20) to the earth rod (13), in that the housing (20) comprises two parts: a base (37) and a cover (38), in that the mechanical part (30; 60) is rigidly secured to the base (37), in that the cover (38) is removably attached to the base (37), and in that the base (37) is made of an electrically insulating material so as to avoid any electrical contact between components (55) located inside the housing (20) and the hermetic casing (11).
- The sealed compressor according to Claim 1, characterised in that the non-return means (31) prevent the housing (20) from moving in an opposite direction to the direction of insertion (22) simply due to pulling on the housing (20), and in that the non-return means (31) allow the housing (20) to move in an opposite direction to the direction of insertion (22) when the pulling force in an opposite direction to the direction of insertion (22) is combined with another manoeuvre other than pulling.
- The sealed compressor according to either of the preceding claims, characterised in that the connection of the housing (20) to the earth rod (13) comprises means (31) for bracing on the earth rod (13).
- The sealed compressor according to Claims 2 and 3, characterised in that the connection of the housing (20) to the earth rod (13) includes means for releasing the bracing by means of the different manoeuvre.
- The sealed compressor according to any of the preceding claims, characterised in that the connection of the housing (20) to the earth rod (13) is defined in such a way that disconnection causing only the traction in an opposite direction to the direction of insertion (22) will destroy the connection to the earth rod (13).
- The sealed compressor according to any of the preceding claims, characterised in that the one-piece mechanical part (30; 60) includes a pierced (34; 64) washer (31; 61) extending in a plane (32; 62), the washer (31; 61) being designed to surround the rod (13) so that the plane (32; 62) of the washer (31; 61) is placed perpendicular to the direction corresponding to the direction of insertion (22), in that the washer (31; 61) has at least one radial fin (33; 63) partially blocking the hole (34; 64) of the washer (31; 61) so as to fit tightly on the rod (13), ensuring electrical connection to the earth rod (13), and in that the fin (33; 63) is inclined relative to the plane (32; 62) of the washer (31; 61) in such a way that the inclination thereof is increased during insertion (22) by elastic deformation, thereby forming the non-return means.
- The sealed compressor according to Claim 6, characterised in that the washer (31; 61) comprises several fins (33; 63).
- The sealed compressor according to either of Claims 6 or 7, characterised in that the one-piece part (60) comprises a wing (65) that can be manoeuvred to move the fin (63) away from the rod (13).
- The sealed compressor according to Claim 8, characterised in that the wing (65) comprises a bearing area (66) allowing a tool to pull on the wing (65) perpendicularly to the direction of insertion (22).
- The sealed compressor according to either of Claims 8 or 9, characterised in that the wing (65) is configured in such a way that pressure on the wing (65) allows the fin (63) to be moved away from the rod (13).
- The sealed compressor according to any of the preceding claims, characterised in that the cable (21) includes an electric earth conductor (40) ending in an earth lug (41) and in that the one-piece mechanical part (30) includes a tab (42) onto which the earth lug (41) is intended to be plugged.
- The sealed compressor according to any of the preceding claims, characterised in that the one-piece mechanical part (30; 60) has shapes defined in such a way that they may be formed in bent sheet metal of constant thickness.
- The sealed compressor according to Claims 11 and 12, characterised in that the tab (42) on which the earth lug (41) is intended to be plugged comprises two bends so as to adapt to differing requirements in terms of thickness of the washer (31) and the tab (42) on which the earth lug (41) is plugged.
- The sealed compressor according to any of the preceding claims, characterised in that the power supply terminals (14, 15, 16) each include a power supply tab extending along the direction of insertion (22) and in that the cable (21) includes at least two electric power supply conductors (47, 48, 49) each ending in a lug (50, 51, 52) designed so as to each plug onto one of the power supply tabs upon connection of the housing (20).
- The sealed compressor according to any of the preceding claims, characterised in that the housing (20) includes a thermal protection component (55) for the compressor (10), in that the power supply terminals (14, 15, 16) include a protective tab (14) extending along the direction of insertion (22), and in that the thermal protection component (55) comprises an electric conductor (56) ending in a lug (57) designed to be plugged onto the protective tab (16).
- The sealed compressor according to any of the preceding claims, characterised in that the housing (20) comprises an electrically insulating material arranged in such a way as to avoid any electrical contact between components (55) located inside the housing (20) and the hermetic casing (11).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1363340A FR3015796B1 (en) | 2013-12-20 | 2013-12-20 | FIXING DEVICE AND ELECTRICAL CONNECTION OF A HERMETIC COMPRESSOR |
PCT/EP2014/078285 WO2015091683A1 (en) | 2013-12-20 | 2014-12-17 | Device for securing and electrically connecting a sealed compressor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3084214A1 EP3084214A1 (en) | 2016-10-26 |
EP3084214B1 true EP3084214B1 (en) | 2017-11-15 |
Family
ID=50483042
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14814861.2A Active EP3084214B1 (en) | 2013-12-20 | 2014-12-17 | Electric fixing and connecting device of an hermetic compressor |
Country Status (5)
Country | Link |
---|---|
US (1) | US9651052B2 (en) |
EP (1) | EP3084214B1 (en) |
ES (1) | ES2656199T3 (en) |
FR (1) | FR3015796B1 (en) |
WO (1) | WO2015091683A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017145277A1 (en) * | 2016-02-24 | 2017-08-31 | 三菱電機株式会社 | Rotary compressor |
EP3952032A1 (en) * | 2020-08-07 | 2022-02-09 | BSH Hausgeräte GmbH | Electrical machine including contact elements forming a terminal |
EP4343151A1 (en) * | 2022-09-22 | 2024-03-27 | BSH Hausgeräte GmbH | Electrical device including an integrated temperature sensor |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1954928A1 (en) * | 1969-10-31 | 1971-05-19 | Danfoss As | Electrical connection device for a hermetically sealed refrigerant compressor |
CH659918A5 (en) * | 1983-06-09 | 1987-02-27 | Landis & Gyr Ag | Clamping device |
US4969832A (en) * | 1989-10-12 | 1990-11-13 | Tecumseh Products Company | Rotary compressor electrical ground device |
US5173057A (en) * | 1992-02-07 | 1992-12-22 | Tecumseh Products Company | Permanent protective cover |
TW372371B (en) * | 1995-12-15 | 1999-10-21 | Carrier Corp | Electrical connector plug |
US6290528B1 (en) * | 1998-07-14 | 2001-09-18 | Carrier Corporation | Electric power supply connector for sealed compressor |
US6159041A (en) * | 1999-03-01 | 2000-12-12 | The Whitaker Corporation | Electrical connector assembly for panel mounting |
FR2977407B1 (en) * | 2011-06-30 | 2013-07-05 | Valeo Japan Co Ltd | DEVICE FOR ELECTRICALLY CONNECTING AN ELECTRICAL COMPRESSOR |
-
2013
- 2013-12-20 FR FR1363340A patent/FR3015796B1/en not_active Expired - Fee Related
-
2014
- 2014-12-17 ES ES14814861.2T patent/ES2656199T3/en active Active
- 2014-12-17 EP EP14814861.2A patent/EP3084214B1/en active Active
- 2014-12-17 WO PCT/EP2014/078285 patent/WO2015091683A1/en active Application Filing
- 2014-12-17 US US15/106,186 patent/US9651052B2/en active Active
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
FR3015796B1 (en) | 2017-02-10 |
US20160319824A1 (en) | 2016-11-03 |
WO2015091683A1 (en) | 2015-06-25 |
FR3015796A1 (en) | 2015-06-26 |
ES2656199T3 (en) | 2018-02-26 |
US9651052B2 (en) | 2017-05-16 |
EP3084214A1 (en) | 2016-10-26 |
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