JP2011064095A - Hermetic compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem of a hermetic compressor wherein a fusion of a lead wire and deterioration of a film occurs with the heat for welding an upper lid to a cylindrical shell if the lead wire is brought into contact with the upper lid, and the lead wires are therefor bound at an intermediate part thereof to prevent the described problems, but it needs a high man-hour for binding the lead wires in a conventional technology, causing an obstruction to reduce cost. <P>SOLUTION: Cost of this hermetic compressor can be reduced by shortening the length of an inner peripheral side lead wire 201 among lead wires 107 to eliminate the slack of the lead wires 107 when wiring. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a hermetic compressor used in an air conditioner, a heat pump type hot water heater, or the like.

  Conventionally, as shown in FIG. 4, this type of compressor includes an electric motor 102, a bearing 104 that supports a main shaft 103 driven by the electric motor, and a compression mechanism that performs a compression process via the main shaft. A compression case 106 forming 105 is disposed on the upper side of the electric motor 102, and a lead wire 107 extending from a stator 116 of the electric motor 102 is a notch passage penetrating the bearing 104 and the compression case 106. 110 is connected to a hermetic terminal 108 disposed on the top of the container. The lower part of the sealed container 101 is an oil reservoir.

  Refrigerant gas sucked from the suction pipe 109 of the compressor enters through the suction port 111 of the compression mechanism 105 and is compressed, and is compressed from the discharge pipe 113 through the notch passage 110 through the side gap of the electric motor 102 from the discharge port 112. It is discharged out of the machine.

  When the lead wire 107 is in contact with the upper lid 114, the lead wire 107 is melted and the coating is deteriorated due to heat generated when the upper lid 114 is welded to the cylindrical shell 115. As shown in FIG. Intermediate binding 117 is applied (for example, refer to Patent Document 1).

JP-A-11-257255

  However, it is desirable that the material cost be as small as possible, especially in the recent demand for severe cost reduction. In particular, the above-described conventional technology has a high man-hour for binding, which has been a factor in hindering cost reduction.

  SUMMARY OF THE INVENTION The present invention solves such a conventional problem, and an object of the present invention is to reduce the material cost and the man-hours by eliminating the lead wire intermediate binding, thereby reducing the cost.

  In order to solve the above-described problems, the present invention is configured to shorten the inner peripheral lead wire when the lead wire is routed.

  When the lead wire is routed, the lead wire on the inner peripheral side is shortened to eliminate the slack of the lead wire, so that contact with the top cover can be avoided even without intermediate binding, and the cost can be reduced.

Sectional drawing of a hermetic compressor showing an embodiment of the present invention Detailed view of the hermetic compressor Diagram showing the assembly procedure of the hermetic compressor Cross section of a conventional hermetic compressor Detailed view of the hermetic compressor

  An electric motor and a compression mechanism that is driven by the electric motor and performs a compression process are disposed inside the sealed container, and the lead wire of the motor is connected to a sealed terminal disposed in the sealed container. The inner lead wire is shortened when the wire is routed.

  Thereby, material cost and a man-hour can be reduced and cost can be reduced.

(Embodiment 1)
Embodiments of the present invention will be described below with reference to the drawings.

  In FIG. 1, an electric motor 102, a bearing 104 that supports a main shaft 103 that is driven by the electric motor, and a compression case 106 that forms a compression mechanism 105 that performs a compression process via the bearing are provided in the sealed container 101. The lead wire 107 extending from the stator 116 of the electric motor 102 passes through the notch passage 110 penetrating the bearing 104 and the compression case 106, and is arranged at the upper portion of the hermetic container 101. It is connected to the sealed terminal 108 provided. The lower part of the sealed container 101 is an oil reservoir.

  Refrigerant gas sucked from the suction pipe 109 of the compressor enters through the suction port 111 of the compression mechanism 105 and is compressed, and is compressed from the discharge pipe 113 through the notch passage 110 through the side gap of the electric motor 102 from the discharge port 112. It is discharged out of the machine.

  FIG. 2 illustrates the detailed shape of the lead wire.

  In the figure, by shortening the lead wire 201 on the inner peripheral side of the lead wire 107, the sag of the lead wire 107 during routing is eliminated.

  The assembly procedure of the hermetic compressor will be described with reference to FIG.

  First, the assembled compression mechanism portion is inserted into the cylindrical shell 115 into which the electric motor stator 116 is shrink-fitted, and is fixed by welding. At the time of insertion, the lead wire 107 is pulled out to the notch passage 110 provided in the outer peripheral part of the compression mechanism part. Next, the lead wire 107 pulled out to the upper part is connected to the sealed terminal 108, and the upper lid 114 is put on and circumferential welding is performed for assembly.

  In the above assembling method, the lead wire 107 is surely separated from the upper lid 114 because the lead wire 107 is not slackened when being routed by shortening the lead wire on the inner peripheral side, and the heat at the time of welding is reduced. Will not melt or deteriorate. A special compressor for fixing the lead wire is not required, and an inexpensive compressor can be realized.

  As described above, the compressor according to the present invention can realize cost reduction, and can be applied to applications such as a heat pump water heater, a vehicle refrigeration air conditioner, and a refrigerator in addition to a compressor for an air conditioner. .

DESCRIPTION OF SYMBOLS 101 Sealed container 102 Electric motor 103 Main shaft 104 Bearing 105 Compression mechanism 106 Compression case 107 Lead wire 108 Sealed terminal 109 Suction pipe 110 Notch passage 111 Suction inlet 112 Discharge outlet 113 Discharge pipe 114 Upper lid 115 Cylindrical shell 116 Stator 117 Intermediate restraint 201 Inside Peripheral lead wire

Claims (1)

An electric motor and a compression mechanism that is driven by the electric motor and performs a compression process are disposed inside the sealed container, and the lead wire of the motor is connected to a sealed terminal disposed in the sealed container. A hermetic compressor characterized in that the inner lead wire is short when the wire is routed.