CN115103962A

CN115103962A - Compressor and refrigeration cycle device

Info

Publication number: CN115103962A
Application number: CN202080096716.XA
Authority: CN
Inventors: 志田勝吾; 户田隼; 川岛裕瑞希
Original assignee: Toshiba Carrier Corp
Current assignee: Toshiba Carrier Corp
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2022-09-23
Also published as: EP4119796A1; JP7405946B2; JPWO2021181463A1; EP4119796A4; WO2021181463A1; JP2024022665A

Abstract

A compressor (2) is provided with: a closed container (11); a compression mechanism (13) housed in the closed container (11); a motor (12) having a cylindrical stator (31) fixed to the inner surface of the closed container (11), and a rotor (32) disposed inside the stator (31) and rotationally driving the compression mechanism (13); and a pair of sealed terminals (18, 19) arranged in a row on the sealed container (11). The 31 st plate-like terminals (75) of the respective sealed terminals (18, 19) are arranged on the sides of the triangle (D) so as to draw the triangle (D) and face the ventral surfaces (75 f). In the pair of hermetic terminals (18, 19), any one corner (Co) of a triangle (D1) drawn by the 31 st plate-like terminals (75) of one of the hermetic terminals (18, 19) faces any one corner (Co) of a triangle (D2) drawn by the 31 st plate-like terminals (75) of the other hermetic terminal (18, 19).

Description

Compressor and refrigeration cycle device

Technical Field

The present invention relates to a compressor and a refrigeration cycle device.

Background

A compressor including a compression mechanism and a motor for driving the compression mechanism is known. The conventional compressor motor includes a plurality of, for example, two three-phase windings. Therefore, the conventional compressor includes two lead wires and two hermetic terminals. Each of the hermetic terminals is electrically connected to each of the three-phase windings via each of the lead wires.

At least 6 electric power lines are connected to the hermetic terminals of these two systems on the inner side of the compressor, and at least 6 electric power lines are connected to the outer side of the compressor. The wiring of the plurality of power lines is complicated, and if excessive bending stress is applied to the power lines, the durability of the power lines may be reduced.

Therefore, the conventional compressor includes the 1 st hermetic terminal and the 2 nd hermetic terminal. These hermetic terminals have 3 pins electrically connected to the motor, are configured in the same shape, and are arranged in a row on the hermetic container. The 3 pins of the 1 st hermetic terminal and the 3 pins of the 2 nd hermetic terminal are disposed asymmetrically with respect to a straight line passing through the center of the discharge pipe of the compressor and the midpoint of the 1 st hermetic terminal and the 2 nd hermetic terminal.

Documents of the prior art

Patent literature

Patent document 1: japanese patent laid-open No. 2012-082776

Disclosure of Invention

Problems to be solved by the invention

However, if the displacement volume is enlarged in order to improve the performance of the compressor, the compression load increases. To cope with this increase in the compression load, the motor needs a larger current. Such an increase in current causes a temperature rise at the time of energization of the terminal of the hermetic terminal connection power line. The quick-connect terminal used in the conventional compressor is difficult to cope with such a temperature rise at the time of energization.

Therefore, by employing a type of terminal in which a plate-shaped large-sized terminal surface is brought into contact and fastened by a screw instead of the quick-connect terminal, it is possible to suppress a temperature rise of the terminal of the electric power line connected to the sealed terminal.

In order to connect the plate-like terminal and the hermetic terminal, a terminal block to which a screw is fastened is required. In the case where a plurality of hermetic terminals are provided as in the conventional compressor, a terminal block is provided for each hermetic terminal. That is, a plurality of terminal blocks are arranged in the same manner as the hermetic terminal.

However, in the conventional compressor, it is difficult to arrange the pair of terminal blocks in a row without interference due to the arrangement relationship of the pair of sealed terminals. Further, it is considered that workability in fastening a screw to each terminal is significantly reduced or that the work of fastening a screw to each terminal is difficult.

Accordingly, the present invention provides a compressor and a refrigeration cycle apparatus, which can provide a terminal block to reliably screw a sealed terminal and a terminal of an electric power line, can connect the electric power line to the sealed terminal without applying an excessive bending stress to the electric power line, and can efficiently connect the electric power line during manufacturing.

Means for solving the problems

In order to solve the above problem, a compressor according to an embodiment of the present invention includes: a closed container; a compression mechanism unit that is housed in the closed container and compresses the refrigerant introduced into the closed container; a motor having a cylindrical stator fixed to an inner surface of the closed casing and a rotor disposed inside the stator and generating a rotational driving force of the compression mechanism; and a pair of hermetic terminals arranged in a row on the hermetic container, each of the hermetic terminals having 3 plate-like terminals arranged outside the hermetic container and electrically connected to the motor, one surface of each of the plate-like terminals being along each side of the triangle and facing one surface of the other two plate-like terminals in such a manner that an imaginary surface including the one surface draws a triangle from the entire 3 plate-like terminals, and any one corner of the triangle drawn by the 3 plate-like terminals of one of the hermetic terminals faces any one corner of the triangle drawn by the 3 plate-like terminals of the other hermetic terminal.

Preferably, the compressor according to the embodiment of the present invention includes a pair of terminal blocks provided to the respective hermetic terminals. Preferably, one of the terminal blocks holds 3 power lines connected to the respective plate-shaped terminals of the corresponding hermetic terminal, and the 3 power lines are wired in a direction away from the other terminal block.

Preferably, each of the hermetic terminals of the compressor according to the embodiment of the present invention includes 32 nd plate-like terminals disposed inside the hermetic container and electrically connected to the motor. Preferably, for each of the hermetic terminals, the front and rear surfaces of one of the 2 nd plate-like terminals are along a 1 st imaginary line which is one of 3 imaginary lines substantially trisecting a circle having a center of gravity of the triangle as a center in a fan shape, the front and rear surfaces of the other two of the 2 nd plate-like terminals are substantially orthogonal to the 2 nd imaginary line which is the other two imaginary lines of the 3 imaginary lines, and the 1 st imaginary line intersects with a portion farther than a center line of the hermetic container as viewed from the pair of hermetic terminals.

A refrigeration cycle apparatus according to an embodiment of the present invention includes the compressor; a heat sink; an expansion device; a heat sink; and a refrigerant pipe for connecting the compressor, the radiator, the expansion device, and the heat absorber to each other to allow a refrigerant to flow therethrough.

Effects of the invention

According to the embodiment of the present invention, it is possible to provide a compressor and a refrigeration cycle device, in which a terminal block can be provided and a hermetic terminal and a terminal of an electric power line can be reliably screwed, an electric power line can be connected to the hermetic terminal without applying an excessive bending stress to the electric power line, and the electric power line can be efficiently connected at the time of manufacturing.

Drawings

Fig. 1 is a schematic diagram of a refrigeration cycle apparatus and a compressor according to an embodiment of the present invention.

Fig. 2 is a schematic view of a hermetic terminal of a compressor according to an embodiment of the present invention, as viewed from above.

Fig. 3 is a schematic view of a hermetic terminal of a compressor according to an embodiment of the present invention, as viewed from below.

Fig. 4 is a schematic view of the hermetic terminal and the terminal block of the compressor according to the embodiment of the present invention as viewed from above.

Fig. 5 is a longitudinal sectional view of a hermetic terminal and a terminal block of a compressor according to an embodiment of the present invention.

Fig. 6 is a plan view of a terminal block of a compressor according to an embodiment of the present invention.

Detailed Description

Embodiments of a compressor and a refrigeration cycle apparatus according to the present invention will be described with reference to fig. 1 to 6. In the drawings, the same or corresponding components are denoted by the same reference numerals.

As shown in fig. 1, the refrigeration cycle apparatus 1 of the present embodiment is, for example, an air conditioner. The refrigeration cycle apparatus 1 includes a hermetic rotary compressor 2 (hereinafter, simply referred to as "compressor 2"), a radiator 3, an expansion device 5, a heat absorber 6, an accumulator 7, and a refrigerant pipe 8. The refrigerant pipe 8 connects the compressor 2, the radiator 3, the expansion device 5, the heat absorber 6, and the accumulator 7 in this order, and circulates the refrigerant. The radiator 3 is also referred to as a condenser. The heat sink 6 is also called evaporator.

The compressor 2 sucks the refrigerant passing through the heat absorber 6 through the refrigerant pipe 8, compresses the refrigerant, and discharges the high-temperature and high-pressure refrigerant to the radiator 3 through the refrigerant pipe 8.

The compressor 2 includes a vertically-disposed cylindrical sealed container 11, an open-winding motor 12 (hereinafter, simply referred to as "motor 12") housed in an upper half portion of the sealed container 11, a compression mechanism 13 housed in a lower half portion of the sealed container 11, a rotary shaft 15 that transmits a rotational driving force of the motor 12 to the compression mechanism 13, a main bearing 16 that rotatably supports the rotary shaft 15, and a sub-bearing 17 that rotatably supports the rotary shaft 15 in cooperation with the main bearing 16.

The center line of the vertically arranged closed casing 11 extends in the vertical direction. The sealed container 11 includes a cylindrical housing portion 11a extending in the vertical direction, a mirror plate 11b closing an upper end portion of the housing portion, and a mirror plate 11c closing a lower end portion of the housing portion.

A discharge pipe 8a for discharging the refrigerant to the outside of the sealed container 11 is connected to the mirror plate 11b on the upper side of the sealed container 11. The discharge pipe 8a is connected to the refrigerant pipe 8. The mirror plate 11b on the upper side of the Sealed container 11 is provided with a pair of Sealed terminals 18 and 19(Sealed Terminal) for guiding electric power supplied to the motor 12 from the outside to the inside of the Sealed container 11, and a pair of Terminal blocks 22 and 23(Terminal block). The

terminal blocks

22 and 23 are provided to the

hermetic terminals

18 and 19, respectively. A plurality of power lines 25, which are electrically connected to the

hermetic terminals

18 and 19 and supply power, are fixed to the

terminal blocks

22 and 23. The power line 25 is a so-called conductor.

The motor 12 generates a driving force for rotating the compression mechanism 13. The motor 12 is disposed above the compression mechanism 13. The motor 12 includes: a cylindrical stator 31 fixed to an inner surface of the closed casing 11; a rotor 32 disposed inside the stator 31 and generating a rotational driving force of the compression mechanism 13; and a plurality of lead wires 33 which are led out from the stator 31 and electrically connected to the pair of

hermetic terminals

18 and 19.

The rotor 32 includes a rotor core 35 having a magnet accommodating hole (not shown) and a permanent magnet (not shown) accommodated in the magnet accommodating hole. The rotor 32 is fixed to the rotary shaft 15. The rotation center line C of the rotor 32 and the rotation shaft 15 substantially coincides with the center line of the stator 31. The rotation center line C of the rotor 32 and the rotation shaft 15 substantially coincides with the center line of the sealed container 11.

The plurality of lead wires 33 are power lines for supplying electric power to the stator 31 through the sealed

terminals

18 and 19, and are so-called lead wires. The lead wires 33 are arranged in plural numbers according to the kind of the motor 12. In the present embodiment, 6 outgoing lines 33 are arranged.

The motor 12 may be a motor having three-phase windings of a plurality of systems, for example, two systems, such as a motor of a conventional compressor, in addition to the open winding type.

The rotation shaft 15 connects the motor 12 and the compression mechanism 13. The rotary shaft 15 transmits the rotational driving force generated by the motor 12 to the compression mechanism 13.

The intermediate portion 15a of the rotary shaft 15 connects the motor 12 and the compression mechanism 13, and is rotatably supported by a main bearing 16. The lower end portion 15b of the rotary shaft 15 is rotatably supported by a sub-bearing 17. The main bearing 16 and the sub bearing 17 may be part of the compression mechanism 13. In other words, the rotary shaft 15 penetrates the compression mechanism 13.

The rotary shaft 15 includes a plurality of, for example, 3 eccentric portions 36 between an intermediate portion 15a supported by the main bearing 16 and a lower end portion 15b supported by the sub bearing 17. Each eccentric portion 36 is a disk or a cylinder having a center that does not coincide with the rotation center line of the rotation shaft 15.

The compression mechanism 13 compresses the refrigerant introduced into the closed casing 11. The motor 12 drives and rotates the rotary shaft 15, whereby the compression mechanism 13 sucks and compresses a gaseous refrigerant from the refrigerant pipe 8, and discharges the compressed high-temperature and high-pressure refrigerant into the sealed container 11.

The compression mechanism 13 is a rotary type with a plurality of cylinders, for example, 3 cylinders. The compression mechanism 13 includes a plurality of cylinders 42 each having a circular cylinder chamber 41, and a plurality of annular rollers 43 arranged in each cylinder chamber 41. The compression mechanism 13 may be a single cylinder rotary type.

Here, the cylinder 42 closest to the motor 12 is referred to as a 1 st cylinder 42A, the cylinder 42 farthest from the motor 12 is referred to as a 3 rd cylinder 42C, and the cylinder 42 disposed between the 1 st cylinder 42A and the 3 rd cylinder 42C is referred to as a 2 nd cylinder 42B.

The compression mechanism 13 includes a main bearing 16 that closes the top surface of the 1 st cylinder 42A, a 1 st partition plate 45A that closes the bottom surface of the 1 st cylinder 42A and the top surface of the 2 nd cylinder 42B, a 2 nd partition plate 45B that closes the bottom surface of the 2 nd cylinder 42B and the top surface of the 3 rd cylinder 42C, and a sub bearing 17 that closes the bottom surface of the 3 rd cylinder 42C.

In other words, the upper surface of the 1 st cylinder block 42A is closed by the main bearing 16. The lower surface of the 1 st cylinder 42A is closed by a 1 st partition plate 45A. The upper surface of the 2 nd cylinder 42B is closed by the 1 st partition plate 45A. The lower surface of the 2 nd cylinder 42B is closed by a 2 nd partition plate 45B. The upper surface of the 3 rd cylinder 42C is closed by a 2 nd partition plate 45B. The lower surface of the 3 rd cylinder 42C is closed by the sub-bearing 17.

That is, the 1 st cylinder block 42A is sandwiched between the main bearing 16 and the 1 st partition plate 45A. The 2 nd cylinder 42B is sandwiched between the 1 st partition plate 45A and the 2 nd partition plate 45B. The 3 rd cylinder 42C is sandwiched between the 2 nd partition plate 45B and the sub-bearing 17.

The main bearing 16 and the 1 st partition plate 45A are collectively fixed to the 2 nd cylinder block 42B by fastening members 46 such as bolts. That is, the main bearing 16 and the 1 st partition plate 45A are fastened together to the 2 nd cylinder block 42B by the fastening member 46. The main bearing 16 is provided with a 1 st discharge valve mechanism 51A that discharges the refrigerant compressed in the cylinder chamber 41 of the 1 st cylinder 42A, and a 1 st discharge muffler 52 that covers the 1 st discharge valve mechanism 51A. The 1 st discharge valve mechanism 51A opens a discharge port (not shown) when a pressure difference between the pressure in the cylinder chamber 41 of the 1 st cylinder block 42A and the pressure in the 1 st discharge muffler 52 reaches a predetermined value due to the compression action of the compression mechanism 13, and discharges the compressed refrigerant into the 1 st discharge muffler 52.

The 2 nd partition plate 45B is provided with a 2 nd discharge valve mechanism 51B and a discharge chamber 53 that discharge the refrigerant compressed in the cylinder chamber 41 of the 2 nd cylinder 42B. The main bearing 16, the 1 st cylinder block 42A, the 1 st partition plate 45A, and the 2 nd cylinder block 42B have a 1 st hole (not shown) connecting the discharge chamber 53 of the 2 nd partition plate 45B with the inside of the 1 st discharge muffler 52. The 2 nd discharge valve mechanism 51B opens a discharge port (not shown) when a pressure difference between the pressure in the cylinder chamber 41 of the 2 nd cylinder 42B and the pressure in the discharge chamber 53 reaches a predetermined value in accordance with the compression action of the compression mechanism 13, and discharges the compressed refrigerant into the discharge chamber 53. The refrigerant discharged into the discharge chamber 53 is discharged into the 1 st discharge muffler 52 through the 1 st hole. The refrigerant discharged into the 1 st discharge muffler 52 through the 1 st orifice joins the refrigerant compressed in the 1 st cylinder block 42A.

The sub-bearing 17, the 3 rd cylinder block 42C, and the 2 nd partition plate 45B are collectively fixed to the 2 nd cylinder block 42B by fastening members 55 such as bolts. That is, the sub-bearing 17, the 3 rd cylinder 42C, and the 2 nd partition plate 45B are commonly fastened to the 2 nd cylinder 42B by the fastening member 55. The sub-bearing 17 is provided with a 3 rd discharge valve mechanism 51C that discharges the refrigerant compressed in the cylinder chamber 41 of the 3 rd cylinder 42C, and a 2 nd discharge muffler 56 that covers the 3 rd discharge valve mechanism 51C. The main bearing 16, the 1 st cylinder block 42A, the 1 st partition plate 45A, the 2 nd cylinder block 42B, the 2 nd partition plate 45B, and the 3 rd cylinder block 42C have a 2 nd hole 57 connecting a space in the 2 nd discharge muffler 56 and a space in the 1 st discharge muffler 52. The 3 rd discharge valve mechanism 51C opens a discharge port (not shown) when a pressure difference between the pressure in the cylinder chamber 41 of the 3 rd cylinder 42C and the pressure in the 2 nd discharge muffler 56 reaches a predetermined value in accordance with the compression action of the compression mechanism 13, and discharges the compressed refrigerant into the 2 nd discharge muffler 56. The refrigerant discharged into the 2 nd discharge muffler 56 is discharged into the 1 st discharge muffler 52 through the 2 nd orifice 57. The refrigerant discharged into the 1 st discharge muffler 52 is merged with the refrigerant compressed in the 1 st cylinder block 42A and the refrigerant compressed in the 2 nd cylinder block 42B.

The 1 st discharge muffler 52 has a discharge hole (not shown) connecting the inside and outside of the 1 st discharge muffler 52. The compressed refrigerant discharged into the 1 st discharge muffler 52 is discharged into the closed casing 11 through the discharge hole.

Further, the 1 st hole may be a part of the 2 nd hole 57. Further, the discharge chamber 53 of the 2 nd partition plate 45B may be connected to the inside of the 2 nd discharge muffler 56. That is, the 1 st orifice may be connected to the inside of the 2 nd discharge muffler 56.

The 1 st cylinder 42A is fixed to a frame 58 by fastening members 59 such as bolts, and the frame 58 is fixed to the closed casing 11 at a plurality of locations by welding, for example, spot welding. That is, the frame 58 supports the rotor 32 of the motor 12, the compression mechanism 13, and the rotary shaft 15 in the closed casing 11 via the 1 st cylinder 42A. Further, the center of gravity of the rotor 32 of the motor 12, the compression mechanism 13, and the rotary shaft 15 in the height direction of the sealed container 11 is preferably located within the range of the thickness of the frame 58 (the dimension in the height direction of the compressor 2).

The plurality of suction pipes 61 penetrate the closed casing 11 and are connected to the cylinder chambers 41 of the respective cylinders 42. Each cylinder 42 has a suction hole connected to each suction pipe 61 and reaching the cylinder chamber 41. The 1 st suction pipe 61A is connected to the cylinder chamber 41 of the 1 st cylinder 42A. The 2 nd suction pipe 61B is connected to the cylinder chamber 41 of the 2 nd cylinder 42B. The 3 rd suction pipe 61C is connected to the cylinder chamber 41 of the 3 rd cylinder 42C. The number of the plurality of suction pipes 61 may be the same as that of the plurality of cylinders 42 as in the present embodiment, or may be smaller than that of the plurality of cylinders 42 by sharing the two cylinders 42. For example, the 2 nd suction pipe 61B may be connected to the 2 nd partition plate 45B. The 2 nd partition plate 45B is provided with a refrigerant passage (not shown) which is connected to the 2 nd partition plate 45B, branches to the cylinder chamber 41 of the 2 nd cylinder 42B and the cylinder chamber 41 of the 3 rd cylinder 42C, and is connected to the two cylinder chambers 41.

The lower part of the closed casing 11 is filled with the lubricating oil 62. Most of the compression mechanism 13 is immersed in the lubricating oil 62 in the closed casing 11.

The accumulator 7 prevents the liquid refrigerant that is not completely gasified by the heat absorber 6 from being sucked into the compressor 2.

Next, the

hermetic terminals

18 and 19 will be described.

As shown in fig. 2 to 5, the pair of

hermetic terminals

18 and 19 of the compressor 2 of the present embodiment are arranged on the dome-shaped mirror plate 11b of the hermetic container 11.

First, one hermetic terminal 18 will be described. The other hermetic terminal 19 has substantially the same structure and the same shape as the one hermetic terminal 18. Therefore, the other hermetic terminal 19 will not be described. For simplicity of description, one hermetic terminal 18 is hereinafter referred to as a "1 st hermetic terminal 18", and the other hermetic terminal 19 is hereinafter referred to as a "2 nd hermetic terminal 19".

The 1 st hermetic terminal 18 includes: a substantially disk-shaped body portion 71; 3 pins 72 penetrating the front and back of the body 71; 1 st plate-like terminals 75 of 3 flat plate shapes provided on the leads 72 and arranged outside the sealed container 11; and 3 flat plate-shaped 2 nd plate-shaped terminals 76 provided to the respective leads 72 and arranged inside the sealed container 11.

Fig. 2 and 3 are views of the

hermetic terminals

18 and 19 as viewed from the extending direction of the leads 72 of the pair of

hermetic terminals

18 and 19. Fig. 2 and 3 show the

hermetic terminals

18 and 19 in a direction inclined with respect to the plan view of the compressor 2.

The body portion 71 holds the 3 pins 72 and the 31 st plate-like terminals 75 in an insulated manner from each other. The 3 pins 72 and the 31 st plate-like terminals 75 are electrically connected to the motor 12.

The 3 pins 72 are arranged at the vertices of a regular triangle d having the center point O of the disk-shaped body 71 as the center of gravity. In other words, 3 pins 72 are arranged at 120 degrees intervals around the center point O. An imaginary line passing through each lead 72 from the center point O is defined as a line segment L1. That is, the 3 line segments L1 substantially trisect the circle in a fan shape.

The 1 st plate-like terminals 75 are connected to the power lines 25. Each of the 1 st plate-like terminals 75 has a ventral surface 75f as one surface and a back surface 75r as the other surface. The ventral surface 75f and the back surface 75r are in a front-back relationship with the 1 st plate-like terminal 75. The ventral surface 75f of each 1 st plate-like terminal 75 is joined to the corresponding lead 72.

As shown in fig. 2, the ventral surface 75f of each of the 1 st plate-shaped terminals 75 faces the ventral surfaces 75f of the other two 1 st plate-shaped terminals 75 along each side of the triangle D such that a virtual plane including the ventral surface 75f forms the triangle D from the entire 31 st plate-shaped terminals 75. In other words, the 31 st plate-like terminals 75 are arranged on the sides of the triangle D so that the ventral surfaces 75f face each other.

The ventral surface 75f and the back surface 75r of each 1 st plate-like terminal 75 are substantially perpendicular to the corresponding line segment L1. Here, the "corresponding line segment L1" is a line segment L1 passing through the lead 72 joined to each of the 1 st plate-like terminals 75, and is a line segment L1 passing through each of the 1 st plate-like terminals 75 from the front to the back. That is, each of the 1 st plate-like terminals 75 is arranged at the center of the corresponding side of the triangle D.

Triangle D encompasses triangle 2D depicted by 3 pins 72. Each vertex of triangle 2D is connected to or closest to the midpoint of the corresponding side of triangle D.

When the end portions of the adjacent 1 st plate-like terminals 75 are connected by a virtual straight line, the 31 st plate-like terminals 75 are arranged so as to form a hexagonal shape as a whole of the 31 st plate-like terminals 75. A virtual straight line connecting the end portions of one of the 1 st plate-like terminals 75 and the other two 1 st plate-like terminals 75 is in a relationship of opposite sides in the hexagon.

The 2 nd plate-like terminals 76 are connected to the lead wires 33. Each 2 nd plate-like terminal 76 has a ventral surface 76f as one surface and a back surface 76r as the other surface. The ventral surface 76f and the back surface 76r are in a front-back relationship with the 2 nd plate-like terminal 76. The ventral surface 76f of each 2 nd plate-like terminal 76 is joined to the corresponding lead 72.

As shown in fig. 3, the ventral surface 76f and the rear surface 76r of one 2 nd plate-like terminal 76a are along the 1 st virtual line L1a which is one of the line segments L1, and the ventral surfaces 76f and the rear surfaces 76r of the other two 2 nd plate-like terminals 76b and 76c are substantially perpendicular to the two 2 nd virtual lines L1b and L1c which are the corresponding other two line segments L1. In other words, the 2 nd plate-like terminal 76a is along a virtual plane VP2a that bisects an acute angle formed by a virtual plane VP2b including the 2 nd plate-like terminal 76b and a virtual plane VP2c including the 2 nd plate-like terminal 76 c.

Next, the relationship between the pair of

hermetic terminals

18 and 19 will be described.

The pair of

hermetic terminals

18 and 19 face each other with a plane P passing through a midpoint between the pair of

hermetic terminals

18 and 19 and a center line of the hermetic container 11 interposed therebetween.

In addition, any one of the corners Co of the triangles D1 and D2 drawn by the 31 st plate-like terminals 75 of one of the

hermetic terminals

18 and 19 faces any one of the corners Co of the triangles D1 and D2 drawn by the 31 st plate-like terminals 75 of the other hermetic terminal 18 or 19. That is, any one corner Co of the triangle D1 drawn by the 31 st plate-like terminals 75 of the 1 st hermetic terminal 18 faces any one corner Co of the triangle D2 drawn by the 31 st plate-like terminals 75 of the 2 nd hermetic terminal 19. Further, any one of the corners Co of the triangle D2 depicted by the 31 st plate-like terminals 75 of the 2 nd hermetic terminal 19 faces any one of the corners Co of the triangle D1 depicted by the 31 st plate-like terminals 75 of the 1 st hermetic terminal 18.

The pair of opposing corners Co of the pair of triangles D1 and D2 may be separated without overlapping as shown in fig. 2, or may overlap.

Therefore, any side of the 2 nd triangle d drawn by the 3 leads 72 of one

hermetic terminal

18, 19 faces any side of the 2 nd triangle d drawn by the 3 leads 72 of the other

hermetic terminal

18, 19. That is, any one side of the 2 nd triangle d described by the 3 pins 72 of the 1 st hermetic terminal 18 faces any one side of the 2 nd triangle d described by the 3 pins 72 of the 2 nd hermetic terminal 19. Further, any side of the 2 nd triangle d described by the 3 pins 72 of the 2 nd hermetic terminal 19 faces any side of the 2 nd triangle d described by the 3 pins 72 of the 1 st hermetic terminal 18.

The 1 st imaginary line L1a of the pair of

hermetic terminals

18 and 19 intersects at a position farther than the center line of the hermetic container 11 when viewed from the pair of

hermetic terminals

18 and 19. In other words, the 2 nd plate-like terminal 76a having the ventral surface 76f and the back surface 76r along the 1 st imaginary line L1a is provided at the lead 72a closest to the center line of the hermetic container 11 among the leads 72 of the

hermetic terminals

18 and 19.

Preferably, the pair of

hermetic terminals

18 and 19 have a plane-symmetric relationship with the plane P as a symmetric plane. The pair of

hermetic terminals

18 and 19 may be asymmetrical as long as one corner Co of the triangle D1 and one corner C of the triangle D2 face each other. In this case, the pair of

hermetic terminals

18 and 19 is preferably arranged such that the opposite sides of each corner Co are parallel to each other.

Next, a pair of terminal blocks 22 and 23 provided in the respective

hermetic terminals

18 and 19 will be described.

First, one terminal block 22 will be described. The other terminal block 23 has substantially the same structure and the same shape as the one terminal block 22. Therefore, the other terminal block 23 is not described. For simplicity of description, one terminal block 22 will be hereinafter referred to as "1 st terminal block 22", and the other terminal block 23 will be hereinafter referred to as "2 nd terminal block 23". The 1 st terminal block 22 is provided on the 1 st hermetic terminal 18, and the 2 nd terminal block 23 is provided on the 2 nd hermetic terminal 19.

The 1 st terminal block 22 has a T-shape as viewed from the extending direction of the 3 leads 72 of the 1 st hermetic terminal 18, and has a thickness in the extending direction of the 3 leads 72. The 1 st terminal block 22 includes 3 terminal arrangement holes 81, 3 plate-like terminal receiving portions 82, and 3 wiring holding portions 83.

The two terminal arrangement holes 81, the two plate-like terminal receiving portions 82, and the two wiring holding portions 83 are arranged in the horizontal bar portion 85 of the T-shaped 1 st terminal block 22. The other terminal arrangement hole 81, the other plate-like terminal receiving portion 82, and the other wiring holding portion 83 are arranged in a vertical rod portion 86 of the T-shaped 1 st terminal block 22.

Each of the terminal arrangement holes 81 has a shape through which each of the pins 72 of the 1 st hermetic terminal 18 and each of the 1 st plate-like terminals 75 can be inserted. Each of the terminal arrangement holes 81 is a series of holes through which the pins 72 and the 1 st plate-like terminals 75 can be integrally inserted.

Two terminal arrangement holes 81 of the crossbar portion 85 of the 1 st terminal block 22 are arranged at respective ends of the crossbar portion 85, and one terminal arrangement hole 81 of the vertical bar portion 86 of the 1 st terminal block 22 is arranged at a boundary portion between the crossbar portion 85 and the vertical bar portion 86. The boundary between the crossbar portion 85 and the side rail portion 86 is a connection portion between the crossbar portion 85 and the side rail portion 86, and is a root portion of the side rail portion 86. These 3 terminal arrangement holes 81 are arranged in a triangular D shape corresponding to the 3 leads 72 and the 31 st plate-like terminals 75 of the 1 st hermetic terminal 18. When the end portions of the adjacent terminal arrangement holes 81 are connected by an imaginary straight line, the 3 terminal arrangement holes 81 are arranged such that the entire 3 terminal arrangement holes 81 draw a hexagonal shape.

The plate-like terminal receiving portions 82 are arranged in the terminal arrangement holes 81. Each of the plate-like terminal receiving portions 82 is disposed outside a virtual triangle D in which the 3 terminal arrangement holes 81 are disposed or outside a virtual hexagon drawn by the 3 terminal arrangement holes 81.

Each of the plate-like terminal receivers 82 is a concave portion having a shape capable of bending the 1 st plate-like terminal 75 inserted into the terminal arrangement hole 81 toward the outside of the triangle D. Each of the plate-like terminal receiving portions 82 has a seat surface on which the 1 st plate-like terminal 75 inserted into the terminal arrangement hole 81 and bent outward of the triangle D is seated. A nut 91 is embedded in the plate-shaped terminal receiving portion 82. A fastening member 92, such as a screw, is fastened to the nut 91. The fastening member 92 electrically connects the plate-like terminal 93 provided at the end of the power line 25 to the 1 st plate-like terminal 75, and fastens the 1 st plate-like terminal 75 bent at the plate-like terminal receiving portion 82 and the terminal 93 of the power line 25 together to be fixed to the 1 st terminal block 22.

However, each 1 st plate-like terminal 75 before being bent protrudes in the extending direction of the lead 72 beyond the leading end of the corresponding lead 72. Each 1 st plate-like terminal 75 has an elongated hole 95 at the projecting portion. The seating position of each 1 st plate-like terminal 75 that is bent at the plate-like terminal receiving portion 82 and seated on the seating surface is not necessarily the same. Therefore, the elongated hole 95 of the 1 st plate-like terminal 75 absorbs the variation in the seating position of the 1 st plate-like terminal 75, and the fastening member 92 is smoothly fastened to the nut 91.

Each of the wiring holding portions 83 is a groove extending in the extending direction of the vertical bar portion 86 of the T-shaped 1 st terminal block 22. That is, each of the wiring holding portions 83 is a groove extending downward in the T-shape drawn by the 1 st terminal block 22. Each wiring holding portion 83 is continuously connected to each plate-like terminal receiving portion 82. Each of the wiring holding portions 83 holds the electric power lines 25 connected to the 1 st plate-like terminal 75 in each of the plate-like terminal receiving portions 82 so as to be wired in the extending direction of the vertical bar portion 86 of the T-shaped 1 st terminal block 22. That is, the wiring holding portion 83 of the vertical bar portion 86 of the 1 st terminal block 22 extends in the bending direction of the 1 st plate-like terminal 75 bent in the corresponding plate-like terminal receiving portion 82. The wiring holding portions 83 of the horizontal rod portions 85 of the 1 st terminal block 22 intersect in the bending direction of the 1 st plate-like terminal 75 bent at the corresponding plate-like terminal receiving portion 82, and extend parallel to the extending direction of the wiring holding portions 83 of the vertical rod portions 86 of the 1 st terminal block 22.

Next, the relationship between the pair of terminal blocks 22 and 23 will be described.

The pair of terminal blocks 22 and 23 face each other with a plane P passing through the center point of the pair of

hermetic terminals

18 and 19 and the center line of the hermetic container 11 interposed therebetween.

Then, 3 electric power lines 25 are held by one of the terminal blocks 22, 23, and the 3 electric power lines 25 connected to the 1 st plate-like terminals 75 of the corresponding sealed

terminals

18, 19 are routed in a direction away from the other

terminal block

22, 23. That is, the 1 st terminal block 22 holds the 3 electric power lines 25 such that the 3 electric power lines 25 connected to the 1 st plate-like terminals 75 of the 1 st encapsulated terminal 18 are routed in a direction away from the 2 nd terminal block 23. The 2 nd terminal block 23 holds the 3 power lines 25 such that the 3 power lines 25 connected to the 1 st plate-like terminals 75 of the 2 nd hermetic terminal 19 are routed in a direction away from the 1 st terminal block 22.

In other words, a pair of terminal blocks 22, 23 each having a T-shape are provided to the pair of

hermetic terminals

18, 19 in such a manner that the respective beam portions 85 of the terminal blocks 22, 23 face each other. That is, the vertical bar portions 86 of the pair of terminal blocks 22 and 23 extend in directions away from each other. Since the wiring retaining portion 83 of each

terminal block

22, 23 extends parallel to the extending direction of the vertical rod portion 86 of the corresponding terminal block 22, one

terminal block

22, 23 retains the 3 electric power lines 25 connected to the 1 st plate-like terminal 75 of the corresponding sealed

terminal

18, 19 in a direction away from the other

terminal block

22, 23.

As described above, in the compressor 2 and the refrigeration cycle apparatus 1 according to the present embodiment, any one of the corners of the triangle D drawn by the 31 st plate-like terminals 75 of one of the

hermetic terminals

18 and 19 faces any one of the corners of the triangle D drawn by the 31 st plate-like terminals 75 of the other hermetic terminal 18 or 19.

Therefore, the compressor 2 and the refrigeration cycle apparatus 1 can bend the 31 st plate-like terminals 75 of the one sealed

terminals

18 and 19 outward of the triangle D without interference. That is, the compressor 2 and the refrigeration cycle apparatus 1 can bend the 31 st plate-like terminals 75 toward the outside of the triangle D without interference with the respective

hermetic terminals

18 and 19, and can easily connect the power lines 25 having the plate-like terminals 93.

In the compressor 2 and the refrigeration cycle apparatus 1, the pair of

hermetic terminals

18 and 19 can be disposed as close as possible without interference between the 3 bent 1 st plate-like terminals 75 of one of the

hermetic terminals

18 and 19 and the 3 bent 1 st plate-like terminals 75 of the other

hermetic terminal

18 and 19. The 31 st plate-like terminals 75 are arranged radially at intervals of 120 degrees in a bent state. At this time, the arrangement relationship of the pair of

hermetic terminals

18, 19 of the present embodiment is an excellent mounting manner in which the pair of

hermetic terminals

18, 19 is brought into the closest proximity and the power line 25 can be easily arranged, when viewed from the adjacent pair of

hermetic terminals

18, 19.

Therefore, the electric power line 25 having the larger plate-shaped terminal 93 can be easily connected to the pair of

hermetic terminals

18 and 19 in the compressor 2 and the refrigeration cycle device 1. In other words, the compressor 2 and the refrigeration cycle apparatus 1 can easily adopt a larger terminal having a large contact area among the terminals 93 of the pair of

hermetic terminals

18 and 19 to which the power lines 25 are connected, and can easily supply a large current to the motor 12 while avoiding a temperature rise of the terminals 93. In the compressor 2 and the refrigeration cycle apparatus 1, the 1 st plate-shaped terminal 75 of the

hermetic terminals

18 and 19 is bent, the terminal blocks 22 and 23 are provided, and the

hermetic terminals

18 and 19 and the terminal 93 of the power line 25 can be reliably screwed. Further, the compressor 2 and the refrigeration cycle apparatus 1 can bend the 1 st plate-shaped terminal 75 of the

hermetic terminals

18 and 19, and can provide the terminal blocks 22 and 23, so that the screws for fastening the

hermetic terminals

18 and 19 and the terminal 93 of the power line 25 together can be easily fastened from the same direction. This improves the degree of freedom of the wiring path of the power lines 25, and allows the power lines 25 to be connected to the

hermetic terminals

18 and 19 without applying excessive bending stress to the power lines 25.

The compressor 2 and the refrigeration cycle apparatus 1 of the present embodiment are provided with a pair of terminal blocks 22 and 23 provided to the respective

hermetic terminals

18 and 19. One of the terminal blocks 22, 23 holds 3 electric power lines 25, and 3 electric power lines 25 connected to the 1 st plate-like terminals 75 of the corresponding

hermetic terminals

18, 19 are routed in a direction away from the other

terminal block

22, 23. Therefore, the compressor 2 and the refrigeration cycle apparatus 1 can connect the electric power lines 25 to the

hermetic terminals

18 and 19 without applying an excessive bending stress to the electric power lines 25, and can route the electric power lines 25 without interfering with each other in a state where an excessive stress is not applied to the electric power lines 25.

Further, the compressor 2 and the refrigeration cycle apparatus 1 according to the present embodiment include the 2 nd plate-like terminal 76, and the 2 nd plate-like terminal 76 is disposed such that the 1 st virtual line L1a intersects at a position farther than the center line of the hermetic container 11 as viewed from the pair of

hermetic terminals

18 and 19. Therefore, the compressor 2 and the refrigeration cycle apparatus 1 can route the lead wire 33 of the motor 12 in the space in the closed casing 11 without applying excessive stress to the lead wire 33. The compressor 2 and the refrigeration cycle apparatus 1 can connect the lead wire 33 of the motor 12 to the 2 nd plate-like terminal 76 without contacting the inner wall surface of the closed casing 11. In this way, the lead wires 33 can be protected from heat when the mirror plate 11b of the sealed container 11 is welded to the case 11a, and the risk of wire breakage can be reduced.

However, the terminal provided at the end of the lead wire 33 is exposed to the refrigerant flowing in the compressor 2. Therefore, the temperature of the terminal depends on the temperature of the refrigerant in the compressor 2. That is, the temperature of the terminal provided at the end of the lead wire 33 does not rise abnormally even when a larger current flows in the motor in accordance with an increase in the compression load. Therefore, the terminal provided at the end of the lead wire 33 of the motor 12 may be a plate-shaped terminal similar to the terminal 93 provided at the end of the power line 25, or may be a quick-connect terminal used in a conventional compressor.

Therefore, according to the refrigeration cycle apparatus 1 and the compressor 2 of the present embodiment, the terminal blocks 22 and 23 can be provided to reliably screw the

hermetic terminals

18 and 19 to the terminal 93 of the power line 25, the power line 25 can be connected to the

hermetic terminals

18 and 19 without applying excessive bending stress to the power line 25, and the power line 25 can be efficiently connected in manufacturing.

Several embodiments of the present invention have been described, but these embodiments are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in other various ways, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the inventions described in the claims and the equivalent scope thereof.

Description of the symbols

1: a refrigeration cycle device; 2: a compressor; 3: a heat sink; 5: an expansion device; 6: a heat sink; 7: a reservoir; 8: a refrigerant pipe; 8 a: a discharge pipe; 11: a closed container; 11 a: a housing portion; 11b, 11 c: a mirror plate; 12: an electric motor; 13: a compression mechanism; 15: a rotating shaft; 15 a: a middle portion; 15 b: a lower end portion; 16: a main bearing; 17: a secondary bearing; 18: a hermetic terminal (1 st hermetic terminal); 19: a hermetic terminal (2 nd hermetic terminal); 22: a terminal block (1 st terminal block); 23: a terminal block (2 nd terminal block); 25: a power line; 31: a stator; 32: a rotor; 33: an outgoing line; 35: a rotor core; 36: an eccentric portion; 41: a cylinder chamber; 42: a cylinder body; 42A: a 1 st cylinder; 42B: a 2 nd cylinder; 42C: a 3 rd cylinder body; 43: a roller; 45A: 1 st partition plate; 45B: a 2 nd partition plate; 46: a fastening member; 51A: 1 st discharge valve mechanism; 51B: a 2 nd discharge valve mechanism; 51C: a 3 rd discharge valve mechanism; 52: 1 st discharge muffler; 53: a discharge chamber; 55: a fastening member; 56: a 2 nd discharge muffler; 57: a 2 nd well; 58: a frame; 59: a fastening member; 61: a suction tube; 61A: 1 st suction pipe; 61B: a 2 nd suction pipe; 61C: a 3 rd suction pipe; 62: lubricating oil; 71: a main body portion; 72: a pin; 75: 1 st plate-like terminal; 75 f: ventral surface; 75 r: a back side; 76; 76a, 76b, 76 c: a 2 nd plate-like terminal; 76 f: ventral surface; 76 r: a back side; 81: a terminal arrangement hole; 82: a plate-like terminal receiving portion; 83: a wiring holding portion; 85: a cross bar portion; 86: a longitudinal bar portion; 91: a nut; 92: a fastening member; 93: a terminal; 95: and a long hole.

Claims

1. A compressor is provided with:

a closed container;

a compression mechanism unit that is housed in the closed container and compresses the refrigerant introduced into the closed container;

a motor having a cylindrical stator fixed to an inner surface of the closed casing and a rotor arranged inside the stator and generating a rotational driving force of the compression mechanism; and

a pair of hermetic terminals arranged in line on the hermetic container,

each of the hermetic terminals has 3 plate-like terminals disposed outside the hermetic container and electrically connected to the motor,

one surface of each of the plate-shaped terminals is along each side of the triangle and faces one surface of the other two plate-shaped terminals so that an imaginary surface including the one surface draws a triangle from the entire 3 plate-shaped terminals,

one of the corners of the triangle described by the 3 plate-shaped terminals of one of the hermetic terminals faces one of the corners of the triangle described by the 3 plate-shaped terminals of the other hermetic terminal.

2. The compressor of claim 1,

the compressor includes a pair of terminal blocks provided to the respective hermetic terminals,

one of the terminal blocks holds 3 power lines connected to the respective plate-shaped terminals of the corresponding hermetic terminal, and the 3 power lines are wired in a direction away from the other terminal block.

3. The compressor of claim 1 or 2,

each of the hermetic terminals has 32 nd plate-like terminals disposed inside the hermetic container and electrically connected to the motor,

in each of the hermetic terminals, a front-back surface of one of the 2 nd plate-like terminals is substantially perpendicular to a 2 nd imaginary line which is one of 3 imaginary lines which substantially bisect a circle having a center of gravity of the triangle as a center in a fan shape, the 1 st imaginary line being one of the 3 imaginary lines, and front-back surfaces of the other two 2 nd plate-like terminals are substantially perpendicular to the 2 nd imaginary line which is the other two imaginary lines of the 3 imaginary lines,

the 1 st imaginary line intersects the pair of hermetic terminals at a position farther than the center line of the hermetic container.

4. A refrigeration cycle device is provided with:

a compressor according to any one of claims 1 to 3;

a heat sink;

an expansion device;

a heat sink; and

and a refrigerant pipe for connecting the compressor, the radiator, the expansion device, and the heat absorber to allow the refrigerant to flow therethrough.