JP2018168770A - Electric compressor - Google Patents

Abstract

To reduce noise and vibration generated from a compression mechanism part.SOLUTION: An electric compressor comprises a motor part 190, a compression mechanism part 100c, and a discharge chamber 50 in a housing 100h. The housing 100h comprises a first housing 180 that internally houses the motor part 190, and a second housing 170 in which the discharge chamber 50 is formed, and fastened to the first housing 180 by a fastening member 90. The compression mechanism part 100c comprises a rotating shaft 150, a rotor 130, a vane 140, a tubular cylinder part 110a, and partition walls 110b and 120. The cylinder part 110a houses the rotating shaft 150, the rotor 130, and the vane 140. The partition walls 110b and 120 form a compression chamber in cooperation with the cylinder part 110a and rotatably support the rotating shaft 150. The partition wall 110b is sandwiched and connected between the first housing 180 and the second housing 170 while the fastening member 90 is inserted.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electric compressor.

  As a prior document disclosing the configuration of the electric compressor, there is JP-A-2006-102447 (Patent Document 1). The electric compressor described in Patent Literature 1 includes a rotating shaft, a motor unit, a first housing, a second housing, and a compression mechanism unit. The motor unit rotates the rotation shaft. The first housing accommodates the motor portion and has a bottomed cylindrical shape. The second housing is joined to the opening side of the first housing.

  The compression mechanism part is comprised by the rotor, the vane, the bottomed cylindrical cup member which includes a rotor, and the side plate which obstruct | occludes opening of a cup member. The compression mechanism is fixedly supported by the second housing. A cylinder chamber is formed by the cup member and the side plate.

JP, 2006-102447, A

  When the motor unit is driven, noise and vibration are generated from the compression mechanism unit as the rotating shaft and the rotor rotate. When the rigidity of the members constituting the cylinder chamber is low, noise and vibration generated from the compression mechanism are increased.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide an electric compressor that can reduce noise and vibration generated from a compression mechanism.

  The electric compressor based on this invention is an electric compressor which has a motor part, a compression mechanism part, and a discharge chamber in a housing. The housing includes a first housing that houses the motor portion therein, and a second housing that has a discharge chamber formed therein and is fastened to the first housing by a fastening member. The compression mechanism unit includes a rotation shaft, a rotor, a vane, a cylindrical cylinder unit, and a partition wall. The rotating shaft is driven by a motor unit. The rotor is connected to the rotating shaft. The rotor is provided with a plurality of vane grooves. The vane is provided so as to be able to appear and disappear in each of the plurality of vane grooves. A cylinder part accommodates a rotating shaft, a rotor, and a vane. The partition wall cooperates with the cylinder portion to form a compression chamber and supports the rotation shaft in a rotatable manner. The partition wall is sandwiched and connected between the first housing and the second housing in a state where the fastening member is inserted.

  In one aspect of the present invention, the partition wall defines a motor chamber that houses the motor unit, and is connected by being sandwiched between the first housing and the second housing in a state where the fastening member is inserted. Has been.

  In one form of this invention, the partition wall is formed integrally with the cylinder part.

  According to the present invention, noise and vibration generated from the compression mechanism can be reduced.

It is sectional drawing which shows the structure of the electric compressor which concerns on Embodiment 1 of this invention. It is sectional drawing which looked at the electric compressor of FIG. 1 from the II-II line arrow direction. It is sectional drawing which shows the structure of the electric compressor which concerns on Embodiment 2 of this invention. It is sectional drawing which shows the structure of the electric compressor which concerns on Embodiment 3 of this invention. It is sectional drawing which shows the structure of the electric compressor which concerns on Embodiment 4 of this invention. It is sectional drawing which shows the structure of the electric compressor which concerns on Embodiment 5 of this invention.

  Hereinafter, an electric compressor according to each embodiment of the present invention will be described with reference to the drawings. In the following description, the same or corresponding parts in the drawings are denoted by the same reference numerals, and the description thereof will not be repeated.

(Embodiment 1)
FIG. 1 is a cross-sectional view showing a configuration of an electric compressor according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of the electric compressor of FIG. 1 as viewed from the direction of arrows II-II.

  As shown in FIGS. 1 and 2, the electric compressor 100 according to the first embodiment of the present invention includes a housing 100 h including a motor housing 180 that is a first housing and a discharge housing 170 that is a second housing. The motor housing 180 and the discharge housing 170 are fastened to each other by a bolt 90 as a fastening member.

  Assuming that the direction in which the rotation shaft 150 extends is the axial direction X1, the motor chamber 10, the cylinder chamber 20, and the discharge chamber 50 are arranged in this order in the axial direction X1 in the housing 100h. The motor chamber 10 is formed inside the motor housing 180. The discharge chamber 50 is formed inside the discharge housing 170.

  The motor chamber 10 houses a motor unit 190 that rotates the rotating shaft 150. The cylinder chamber 20 accommodates the compression mechanism unit 100c. The compression mechanism unit 100 c is driven by the motor unit 190 through the rotation shaft 150 and compresses the refrigerant in the cylinder chamber 20. The refrigerant compressed by the compression mechanism unit 100c is discharged into the discharge chamber 50. The discharge chamber 50 discharges the refrigerant compressed by the compression mechanism unit 100c to the outside.

  The compression mechanism 100c includes a rotating shaft 150, a rotor 130, a vane 140, a cylinder 110a, a bottom 110b, and a side plate 120 of a cylinder 110 described later. The rotor 130 is connected to the rotary shaft 150, and a plurality of vane grooves 132 are formed on the outer periphery. The vane 140 is detachably mounted in each of the plurality of vane grooves 132.

  In the cylinder chamber 20, the back pressure chamber 70 is defined between each of the plurality of vane grooves 132 and the bottom surface of the vane 140, and the compression chamber 30 is defined by the rotor 130 and the vane 140.

  Specifically, the cylinder 110 includes a cylindrical cylinder portion 110a and a bottom portion 110b that is a first partition wall that closes one end side of the cylinder portion 110a. The cylinder chamber 20 is partitioned by the cooperation of the cylinder 110 and the side plate 120 that is the second partition wall that closes the other end of the cylinder portion 110 a, and the compression chamber 30 is partitioned inside the cylinder chamber 20. .

  A rotor 130 is rotatably provided in the cylinder chamber 20. The rotor 130 is coupled to the rotation shaft 150 so as to be coaxial with the rotation shaft 150. The rotating shaft 150 is driven by the motor unit 190, and the rotor 130 rotates integrally with the rotating shaft 150. The compression chamber 30 is defined by the cylinder 110, the side plate 120, the rotor 130, and the vane 140.

  A cover body 160 is fixed to the side of the discharge chamber 50 opposite to the cylinder 110 side of the side plate 120. The discharge chamber 50 is partitioned by the side plate 120, the cover body 160 and the discharge housing 170. In the discharge chamber 50, the oil separation unit 161 is fixed to the cover body 160. The oil separation unit 161 separates the lubricating oil from the refrigerant gas compressed in the compression chamber 30.

Hereinafter, each component of the electric compressor 100 will be described in detail.
The shape of the motor housing 180 is a bottomed cylindrical shape. The motor housing 180 includes a substantially disc-shaped bottom portion 180b, a cylindrical portion 180c connected to the outer periphery of the bottom portion 180b, and a flange portion provided at the end of the cylindrical portion 180c opposite to the bottom portion 180b side. 180f is included. The bottom portion 180b, the cylindrical portion 180c, and the flange portion 180f are integrally formed. The flange portion 180f is provided with a through hole 180h through which the bolt 90 is inserted.

  The flange portion 180f of the motor housing 180 is fastened to the flange portion 170f of the discharge housing 170 by a bolt 90 with the gaskets 80 and 81 and the flange portion 110f of the cylinder 110 interposed therebetween. In the present embodiment, the motor housing 180 and the discharge housing 170 are connected to each other with the flange portion 110f of the cylinder 110 interposed therebetween. The motor housing 180 defines the motor chamber 10 that houses the motor unit 190 together with the bottom 110 b of the cylinder 110.

  The cylindrical portion 180c of the motor housing 180 is provided with a suction port 181 that allows the motor chamber 10 to communicate with the outside. The motor chamber 10 functions as a suction chamber. An evaporator (not shown) is connected to the suction port 181. A shaft support 182 is provided at the center of the bottom 180 b of the motor housing 180. A bearing 189 is provided on the shaft support 182. One end of the rotating shaft 150 in the axial direction X1 is inserted and supported on the inner periphery of the bearing 189.

  The motor unit 190 is provided in the motor chamber 10. The motor unit 190 includes a stator 191 and a motor rotor 192. The stator 191 is fixed to the cylindrical portion 180 c of the motor housing 180. Power is supplied to the stator 191 through the cluster block 193. The motor rotor 192 is rotatably provided inside the stator 191. The motor rotor 192 is connected to the rotating shaft 150.

  The shape of the discharge housing 170 is a bottomed cylindrical shape. The discharge housing 170 has a substantially disc-shaped bottom 170b, a cylindrical portion 170c connected to the outer periphery of the bottom 170b, and a flange portion provided at the end of the cylindrical portion 170c opposite to the bottom 170b side. 170f is included. The bottom portion 170b, the cylindrical portion 170c, and the flange portion 170f are integrally formed. The flange portion 170f is provided with a hole portion 170h that is screwed into the bolt 90. The cylindrical portion 170c of the discharge housing 170 is provided with a discharge port 171 that communicates the discharge chamber 50 with the outside. The discharge port 171 is connected to a condenser (not shown).

  The cylinder 110 includes a substantially cylindrical cylinder portion 110a, a disc-shaped bottom portion 110b connected to the cylinder portion 110a, and a flange portion 110f provided on the outer periphery of the bottom portion 110b. The cylinder part 110a, the bottom part 110b, and the flange part 110f are integrally formed. The flange portion 110f is provided with a through-hole 110h through which the bolt 90 is inserted.

  A shaft hole 111 that is in sliding contact with the rotating shaft 150 is provided at a central portion on one end side in the axial direction X1 of the cylinder 110. It is preferable that a plating film having wear resistance is provided on the surface of the shaft hole 111.

  The cylinder 110 is provided with a recess 112 that opens to the other end side in the axial direction X1, and a cylinder chamber 20 is formed therein. The inner peripheral surface of the recess 112 has a substantially circular cross-sectional shape, and the center of the recess 112 is eccentric with respect to the position on the central axis of the rotation shaft 150. An annular groove 113 surrounding the outer periphery of the shaft hole 111 is provided on the bottom surface of the recess 112. A rotor 130 and a vane 140 are accommodated in the cylinder chamber 20.

  The cylinder 110 has a notch 117 that partitions the discharge space 40 together with the inner peripheral surface of the discharge housing 170, a discharge port 116 that connects the discharge space 40 and the cylinder chamber 20, and an opening on one end side in the direction along the axial direction X1. The suction passage 114 and the suction port 115 for communicating the inside of the suction passage 114 with the cylinder chamber 20 are provided. The motor chamber 10 and the cylinder chamber 20 communicate with each other by the suction passage 114 and the suction port 115.

  As shown in FIG. 2, a reed valve 41, a retainer 42 and a bolt 43 are arranged in the discharge space 40. The bolt 43 fixes the reed valve 41 and the retainer 42 to the cylinder 110. The reed valve 41 opens and closes the discharge port 116.

  The side plate 120 has a substantially disc shape. The outer peripheral surface of the side plate 120 faces the inner peripheral surface of the discharge housing 170. The outer peripheral surface of the side plate 120 and the inner peripheral surface of the discharge housing 170 are sealed with an O-ring.

  A shaft hole 121 that is in sliding contact with the rotating shaft 150 is provided in the center of the side plate 120. It is preferable that a plating film having wear resistance is provided on the surface of the shaft hole 121. An annular groove 123 surrounding the outer periphery of the shaft hole 121 is provided on one end side of the side plate 120 in the axial direction X1. The annular groove 123 of the side plate 120 faces the annular groove 113 of the cylinder 110. A projecting portion 125 projecting concentrically with the shaft hole 121 is provided on the other end side of the side plate 120 in the axial direction X1.

  The side plate 120 is provided with a communication hole 122 that communicates with the discharge space 40. The side plate 120 is provided with a through hole 124 communicating with the inside of the annular groove 123. The side plate 120 and the cylinder 110 are fixed to each other by a bolt 129.

  As shown in FIG. 2, the outer peripheral surface of the rotor 130 has a substantially circular cross-sectional shape. A shaft hole 131 in which the rotation shaft 150 is inserted and fixed is provided at the center of the rotor 130. A plurality of vane grooves 132 having a depth direction from the outer periphery toward the shaft hole 131 are provided in the rotor 130 at intervals in the circumferential direction.

  A vane 140 is attached to each of the plurality of vane grooves 132. A back pressure chamber 70 is defined between each of the plurality of vane grooves 132 and the bottom surface of the vane 140. As shown in FIG. 1, the back pressure chamber 70 communicates with the inside of the annular groove 113 of the cylinder 110 and the inside of the annular groove 123 of the side plate 120.

  The vane 140 is slidably in contact with the inner wall of the vane groove 132 and is provided so as to be able to protrude and retract with respect to the vane groove 132. Specifically, the vane 140 receives a force in a direction protruding from the vane groove 132 due to the centrifugal force received when the rotor 130 rotates in the direction of the arrow R1 and the back pressure received from the back pressure chamber 70. The tip of the vane 140 is in sliding contact with the inner peripheral surface of the cylinder chamber 20. Therefore, when the rotor 130 rotates in the direction of the arrow R1 and the inner peripheral surface of the cylinder chamber 20 and the outer peripheral surface of the rotor 130 are close to each other, the vane 140 enters the vane groove 132 from the inner peripheral surface of the cylinder chamber 20. To receive power. By receiving forces acting in the opposite directions, the vane 140 repeatedly appears and disappears from the vane groove 132 as the rotor 130 rotates.

  As shown in FIG. 2, in the cylinder chamber 20, the inner peripheral surface and the bottom surface of the recess 112 of the cylinder 110, the outer peripheral surface of the rotor 130, the vane 140 adjacent to each other in the circumferential direction of the rotor 130, and the side plate 120 Thus, the compression chamber 30 is partitioned.

  As shown in FIG. 1, the cover body 160 is fixed to the side plate 120 by bolts 169. A gasket is provided between the side plate 120 and the cover body 160. A concave portion facing the concave portion 112 of the cylinder 110 with the side plate 120 sandwiched between each other while having a shape along the protruding portion 125 of the side plate 120 on one end side in the axial direction X1 of the rotating shaft 150 of the cover body 160 167 is provided.

  The intermediate pressure chamber 60 is defined by the side plate 120, the cover body 160, the gasket sandwiched between the side plate 120 and the cover body 160, and the rotating shaft 150. The intermediate pressure chamber 60 communicates with the back pressure chamber 70 through the through hole 124 and the annular groove 123 of the side plate 120.

  An oil separation portion 161 is provided on the other end side in the direction along the axial direction X1 of the rotation shaft 150 of the cover body 160. The oil separation unit 161 includes an oil separation chamber 162 and a cylindrical member 163 provided in the oil separation chamber 162. An opening is provided at one end of the oil separation chamber 162, a cylindrical member 163 is fixed to the opening, and an oil discharge port 165 is provided at the other end of the oil separation chamber 162.

  The cylindrical member 163 includes a large diameter portion and a small diameter portion. The large diameter portion of the cylindrical member 163 is press-fitted into the opening of the oil separation chamber 162. The small diameter portion of the cylindrical member 163 is located inside the oil separation chamber 162 with a gap between the inner wall of the oil separation chamber 162.

  The cover body 160 is provided with a communication hole 164 that communicates with the communication hole 122 of the side plate 120. The communication hole 122 and the communication hole 164 constitute a discharge passage that connects the discharge space 40 and the oil separation chamber 162. The cover body 160 is provided with a communication passage 166 that communicates the bottom of the discharge chamber 50 with the intermediate pressure chamber 60.

  When the refrigerant gas that has flowed into the oil separation chamber 162 from the discharge space 40 moves while rotating between the outer periphery of the small diameter portion of the cylindrical member 163 and the inner wall of the oil separation chamber 162, the lubricating oil is centrifuged. . The lubricating oil separated in the oil separation chamber 162 flows out from the oil discharge port 165 to the discharge chamber 50. The refrigerant gas separated from the lubricating oil passes through the inside of the cylindrical member 163 and flows out from the opening of the large diameter portion toward the discharge port 171.

  In the electric compressor 100 according to the first embodiment of the present invention, the rotating shaft 150 rotates when the motor unit 190 is driven. Thereby, the rotor 130 rotates in the cylinder chamber 20, and the volume in the compression chamber 30 repeats expansion and contraction. The low-pressure refrigerant that has passed through the suction passage 114 and the suction port 115 flows from the motor chamber 10 into the compression chamber 30 whose volume is expanding.

  In the compression chamber 30 whose volume is reduced, the refrigerant is compressed. The compressed high-pressure refrigerant pushes away the reed valve 41, passes through the discharge port 116, and flows into the discharge space 40. The refrigerant gas from which the lubricating oil is separated from the discharge space 40 through the communication hole 122 and the communication hole 164 and separated in the oil separation chamber 162 flows into the discharge chamber 50.

  When the rotating shaft 150 is driven by the motor unit 190, the rotating shaft 150 and the rotor 130 rotate, and vibration and noise are generated. In addition, with the rotation of the rotary shaft 150 and the rotor 130, the refrigerant is compressed in the compression chamber 30, and vibration and noise are also generated in the cylinder portion 110 a and the bottom portion 110 b of the cylinder 110 that partitions the compression chamber 30.

  In the present embodiment, the flange portion 110f of the cylinder 110 is sandwiched and connected between the motor housing 180 and the discharge housing 170 in a state where the bolt 90 is inserted, so that the cylinder portion 110a and the bottom portion of the cylinder 110 are connected. 110b is firmly fixed to increase the rigidity. Therefore, the bottom portion 110b of the cylinder 110 that defines the compression chamber 30 and the cylinder portion 110a that is integrally formed with the bottom portion 110b and defines the compression chamber 30 are rotated by the rotation of the rotary shaft 150 and the rotor 130, and in the compression chamber 30. It is possible to suppress vibration due to the compression of the refrigerant. Thereby, the noise and vibration which generate | occur | produce from the compression mechanism part 100c can be reduced. Since the bottom part 110b of the cylinder 110 is located in the vicinity of the motor part 190 which is a drive source, the noise and vibration generated from the electric compressor 100 can be more effectively improved by increasing the rigidity of the bottom part 110b of the cylinder 110. Can be reduced.

  When the bottom 110b of the cylinder 110 that defines the compression chamber 30 is thinned in order to reduce the weight of the electric compressor 100 and the size in the axial direction X1, vibration and noise are easily transmitted through the bottom 110b of the cylinder 110. In particular, the bottom 110b of the cylinder 110 that defines the compression chamber 30 also has a function of supporting the rotating shaft 150, and thus it is difficult to reduce the thickness. If the flange portion 110f of the cylinder 110 is sandwiched and connected between the motor housing 180 and the discharge housing 170 with the bolt 90 inserted as in the present embodiment, the bottom portion of the cylinder 110 is used. While maintaining the function of supporting the rotating shaft 150 of 110b, the vibration and noise generated from the electric compressor 100 can be reduced while suppressing the increase in size of the cylinder 110.

  In the present embodiment, a thread groove is provided on the inner peripheral surface of the hole 170h. However, the present invention is not limited to this, and the hole 170h is a through-hole that is not provided with a thread groove on the inner peripheral surface. The flange 90f of the motor housing 180, the flange 110f of the cylinder 110, and the flange 170f of the discharge housing 170 are sandwiched between the bolt 90 and the nut inserted through the through hole 180h, the through hole 110h, and the hole 170h. May be.

(Embodiment 2)
Hereinafter, an electric compressor according to Embodiment 2 of the present invention will be described. The electric compressor according to the second embodiment of the present invention is mainly different from the electric compressor 100 according to the first embodiment in that the cylinder portion and the first partition wall are formed separately. The description of the same configuration as 100 will not be repeated.

  FIG. 3 is a cross-sectional view showing the configuration of the electric compressor according to the second embodiment of the present invention. As shown in FIG. 3, the electric compressor 200 according to Embodiment 2 of the present invention includes a substantially cylindrical cylinder portion 210a and a disk-shaped side that is a first partition wall that closes one end of the cylinder portion 210a. Plate 210b. The cylinder part 210a and the side plate 210b are configured separately.

  The cylinder portion 210a is provided with a suction passage 214b that opens to one end in the direction along the axial direction X1, and a suction port 115 that communicates the inside of the suction passage 214b with the cylinder chamber 20.

  The side plate 210b is provided with a communication hole 214a that allows the suction passage 214b of the cylinder part 210a and the motor chamber 10 to communicate with each other. A flange portion 210f is provided on the outer peripheral side of the side plate 210b. The flange portion 210f is provided with a through hole 210h through which the bolt 90 is inserted.

  In the present embodiment, the flange portion 180f of the motor housing 180 is fastened to the flange portion 270f of the discharge housing 270 by the bolt 90 with the gaskets 80 and 81 and the flange portion 210f of the side plate 210b interposed therebetween.

  In the present embodiment, since the flange portion 210f of the side plate 210b is sandwiched and connected between the motor housing 180 and the discharge housing 270 with the bolt 90 inserted, the side plate 210b is firmly fixed. The rigidity has been increased. Therefore, the side plate 210b that defines the compression chamber 30 can be prevented from vibrating due to the rotation of the rotation shaft 150 and the rotor 130 and the compression of the refrigerant in the compression chamber 30. Thereby, the noise and vibration which generate | occur | produce from the compression mechanism part 100c can be reduced.

(Embodiment 3)
Hereinafter, an electric compressor according to Embodiment 3 of the present invention will be described. The electric compressor according to the third embodiment of the present invention is mainly different from the electric compressor 100 according to the first embodiment in that the cylinder portion and the second partition wall are integrally formed. The description of the same configuration as in FIG.

  FIG. 4 is a cross-sectional view showing a configuration of an electric compressor according to Embodiment 3 of the present invention. As shown in FIG. 4, the electric compressor 300 according to the third embodiment of the present invention includes a housing 300 h that includes a motor housing 380 and a discharge housing 370. The motor housing 380 and the discharge housing 370 are fastened to each other by a bolt 90 as a fastening member.

  The electric compressor 300 includes a cylinder 320. The cylinder 320 includes a substantially cylindrical cylinder part 320a, a disk-shaped bottom part 320b that is a second partition wall that closes the other end side of the cylinder part 320a, and a flange part 320f provided on the outer periphery of the bottom part 320b. Including. The cylinder part 320a, the bottom part 320b, and the flange part 320f are integrally formed. The flange portion 320f is provided with a through hole 320h through which the bolt 90 is inserted. The cylinder chamber 20 is partitioned by the cylinder 320 and a side plate 310b that is a first partition wall that closes one end of the cylinder portion 320a.

  The cylinder portion 320a is provided with a suction passage 324b that opens to one end in the direction along the axial direction X1, and a suction port 115 that communicates the inside of the suction passage 324b with the cylinder chamber 20.

  The side plate 310b has a substantially disc shape. The side plate 310b is provided with a communication hole 314a that allows the suction passage 324b of the cylinder part 320a and the motor chamber 10 to communicate with each other. The outer peripheral surface of the side plate 310 b faces the inner peripheral surface of the motor housing 380. The outer peripheral surface of the side plate 310b and the inner peripheral surface of the motor housing 380 are sealed with an O-ring.

  The discharge housing 370 includes a substantially disc-shaped bottom portion 370b, a tubular portion 370c connected to the outer periphery of the bottom portion 370b, and a flange portion provided at the end of the tubular portion 370c opposite to the bottom portion 370b side. 370f is included. The bottom portion 370b, the cylindrical portion 370c, and the flange portion 370f are integrally formed. The flange portion 370f is provided with a hole portion 370h that is screwed into the bolt 90.

  In the present embodiment, the flange portion 380f of the motor housing 380 is fastened by the bolt 90 with the flange portion 370f of the discharge housing 370 with the gaskets 80 and 81 and the flange portion 320f of the cylinder 320 interposed therebetween.

  In the present embodiment, the flange portion 320f of the cylinder 320 is sandwiched and connected between the motor housing 380 and the discharge housing 370 with the bolt 90 inserted, and therefore the cylinder portion 320a and the bottom portion of the cylinder 320 are connected. 320b is firmly fixed to increase rigidity. Therefore, the bottom part 320b of the cylinder 320 that defines the compression chamber 30 and the cylinder part 320a that is integrally formed with the bottom part 320b and defines the compression chamber 30 are rotated by the rotation of the rotary shaft 150 and the rotor 130 and within the compression chamber 30. It is possible to suppress vibration due to the compression of the refrigerant. Thereby, the noise and vibration which generate | occur | produce from the compression mechanism part 100c can be reduced.

  In the present embodiment, the screw groove is provided on the inner peripheral surface of the hole 370h. However, the present invention is not limited to this, and the hole 370h is a through hole in which the screw groove is not provided on the inner peripheral surface. The flange portion 380f of the motor housing 380, the flange portion 320f of the cylinder 320, and the flange portion 370f of the discharge housing 370 are sandwiched between the bolt 90 and the nut inserted through the through hole 380h, the through hole 320h, and the hole portion 370h. May be.

(Embodiment 4)
Hereinafter, the electric compressor which concerns on Embodiment 4 of this invention is demonstrated. The electric compressor according to Embodiment 4 of the present invention is mainly different from the electric compressor 300 according to Embodiment 3 in that the cylinder portion and the second partition wall are formed separately. The description of the same configuration as 300 will not be repeated.

  FIG. 5 is a cross-sectional view showing a configuration of an electric compressor according to Embodiment 4 of the present invention. As shown in FIG. 5, the electric compressor 400 according to the fourth embodiment of the present invention includes a substantially cylindrical cylinder part 210 a and a disk-shaped disk that is a second partition wall that closes the other end side of the cylinder part 210 a. Side plate 420b. The cylinder part 210a and the side plate 420b are configured separately.

  A flange portion 420f is provided on the outer peripheral side of the side plate 420b. The flange portion 420f is provided with a through hole 420h through which the bolt 90 is inserted.

  In the present embodiment, the flange portion 380f of the motor housing 380 is fastened to the flange portion 370f of the discharge housing 370 and the bolt 90 with the gaskets 80 and 81 and the flange portion 420f of the side plate 420b interposed therebetween.

  In the present embodiment, the flange portion 420f of the side plate 420b is sandwiched and connected between the motor housing 380 and the discharge housing 370 with the bolt 90 inserted therethrough, so that the rigidity of the side plate 420b is increased. be able to. Therefore, the side plate 420b that partitions the compression chamber 30 can be prevented from vibrating due to the rotation of the rotating shaft 150 and the rotor 130 and the compression of the refrigerant in the compression chamber 30. Thereby, the noise and vibration which generate | occur | produce from the compression mechanism part 100c can be reduced.

(Embodiment 5)
Hereinafter, an electric compressor according to Embodiment 5 of the present invention will be described. The electric compressor according to Embodiment 5 of the present invention is mainly based on the point that the first partition wall and the second partition wall are sandwiched between the motor housing and the discharge housing. Since it is different from the electric compressor 400 according to the fourth embodiment, the description of the same configuration as the electric compressor 200 or the electric compressor 400 will not be repeated.

  FIG. 6 is a cross-sectional view showing a configuration of an electric compressor according to Embodiment 5 of the present invention. As shown in FIG. 6, the electric compressor 500 according to the fifth embodiment of the present invention includes a motor housing 180, a discharge housing 370, and an intermediate housing 570 disposed between the motor housing 180 and the discharge housing 370. And a housing 500h. The motor housing 180, the discharge housing 370, and the intermediate housing 570 are fastened to each other by a bolt 90 as a fastening member.

  The shape of the intermediate housing 570 is a cylindrical shape. A flange portion 570 f is provided on the outer peripheral side of the intermediate housing 570. The flange portion 570f is provided with a through hole 570h through which the bolt 90 is inserted.

  In the present embodiment, the flange portion 180f of the motor housing 180 includes the gaskets 80, 81, 82, 83, the flange portion 210f of the side plate 210b, the flange portion 570f of the intermediate housing 570, and the flange portion 420f of the side plate 420b. The flange portion 370f of the discharge housing 370 is fastened by a bolt 90 with a gap therebetween.

  In the present embodiment, the flange portion 210f of the side plate 210b and the flange portion 420f of the side plate 420b are sandwiched and connected between the motor housing 180 and the discharge housing 370 with the bolt 90 inserted. The rigidity of the side plate 210b and the side plate 420b can be increased. Therefore, the side plate 210b and the side plate 420b that define the compression chamber 30 can be prevented from vibrating due to the rotation of the rotating shaft 150 and the rotor 130 and the compression of the refrigerant in the compression chamber 30. Thereby, the noise and vibration which generate | occur | produce from the compression mechanism part 100c can be reduced.

  In the description of the above-described embodiment, configurations that can be combined may be combined with each other.

  It should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  10 motor chamber, 20 cylinder chamber, 30 compression chamber, 40 discharge space, 41 reed valve, 42 retainer, 43, 90, 129, 169 bolt, 50 discharge chamber, 60 intermediate pressure chamber, 70 back pressure chamber, 80, 81, 82,83 Gasket, 100, 200, 300, 400, 500 Electric compressor, 100c Compression mechanism, 100h, 200h, 300h, 400h, 500h Housing, 110, 210, 310 Cylinder, 110a, 210a, 310a Cylinder, 110b 170b, 180b, 210b, 270b, 320b, 370b Bottom, 110f, 170f, 180f, 210f, 270f, 320f, 370f, 380f, 420f, 570f Flange, 110h, 124, 180h, 210h, 320h, 380h, 420h 570h Through hole, 111, 121, 131 shaft hole, 112, 167 recess, 113, 123 annular groove, 114, 414b suction passage, 115 suction port, 116 discharge port, 117 notch, 120, 210b, 310b, 320, 420b Side plate, 122, 164, 214a, 314a Communication hole, 125 projecting portion, 130 rotor, 132 vane groove, 140 vane, 150 rotating shaft, 160 cover body, 161 oil separating portion, 162 oil separating chamber, 163 cylinder member, 165 oil discharge port, 166 communication path, 170, 270, 370 discharge housing, 170c, 180c, 370c cylindrical portion, 170h, 370h hole portion, 171 discharge port, 180, 380 motor housing, 181 suction port, 182 shaft support portion, 189 bearings, 190 motors Department, 191 stator, 192 rotor, 193 cluster block, 570 intermediate housing.

Claims (3)

An electric compressor having a motor part, a compression mechanism part and a discharge chamber in a housing,
The housing includes a first housing that houses the motor unit therein, and a second housing in which the discharge chamber is formed and fastened by a fastening member with the first housing,
The compression mechanism is
A rotating shaft driven by the motor unit;
A rotor coupled to the rotating shaft and provided with a plurality of vane grooves;
A vane provided so as to be able to appear and disappear in each of the plurality of vane grooves;
A cylindrical cylinder portion that houses the rotating shaft, the rotor, and the vane;
A compression chamber is formed in cooperation with the cylinder part, and a partition wall that rotatably supports the rotating shaft,
The partition wall is an electric compressor that is sandwiched and connected between the first housing and the second housing in a state where the fastening member is inserted.   The partition wall defines a motor chamber that houses the motor unit, and is connected by being sandwiched between the first housing and the second housing in a state where the fastening member is inserted. The electric compressor according to claim 1.   The electric compressor according to claim 1, wherein the partition wall is formed integrally with the cylinder portion.

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