Scroll compressor and method for assembling scroll compressor

Abstract

Provided is a scroll compressor (100) comprising a bearing housing (10) that is formed in a cylindrical shape along an axis (X1) that is the center around which a turning scroll (42) turns, and a rear housing (20) that seals one end along the axis (X1) of the bearing housing (10). A facing surface (41Aa) of the end plate (41A) is provided with a positioning pin (44) that protrudes toward the rear housing (20). An end surface (10a) of the bearing housing (10) is provided with a positioning pin (11) that protrudes toward the rear housing (20), an end surface (20a) of the rear housing (20) is provided with an insertion hole (20c) into which the positioning pin (44) is inserted, and an insertion hole (20b) into which the positioning pin (11) is inserted, and a length (L1) from the facing surface (41Aa) to the tip of the positioning pin (44) is set to be longer than a length (L2) from the facing surface (41Aa) to the tip of the positioning pin (11).

Description

Scroll compressor and method for assembling scroll compressor

[0001] The present disclosure relates to a scroll compressor and a method for assembling a scroll compressor.

[0002] Conventionally, scroll compressors having a fixed scroll and an orbiting scroll that meshes with the fixed scroll are known (see, for example, Patent Document 1). Patent Document 1 discloses that a pair of positioning pins is provided on a support frame that houses the orbiting scroll, and the pair of positioning pins is inserted into a pair of positioning holes provided in the fixed scroll blade, thereby positioning the fixed scroll blade with respect to the support frame.

[0003] Japanese Patent Application Publication No. 5-149263

[0004] In a scroll compressor, the fixed scroll and the orbiting scroll that orbits relative to the fixed scroll must be assembled so that their phases about the orbital axis are properly maintained. When one end of a first housing that houses the orbiting scroll is sealed with a second housing, the fixed scroll must be properly fixed to the second housing, and the second housing must be properly fixed to the first housing.

[0005] However, in order to simultaneously perform the work of properly fixing the fixed scroll to the second housing and the work of properly fixing the second housing to the first housing, it is necessary to properly position the three components, i.e., the first housing, the second housing, and the fixed scroll. Therefore, when assembling a scroll compressor, a worker must perform the relatively difficult task of properly positioning the three components.

[0006] The present disclosure has been made in view of the above circumstances, and aims to improve the workability when assembling a scroll compressor having a fixed scroll and an orbiting scroll.

[0007] A scroll compressor according to one aspect of the present disclosure includes a compression section including a fixed scroll having a spiral-shaped first wall body erected on one side surface of a first end plate, and an orbiting scroll having a spiral-shaped second wall body erected on one side surface of a second end plate, the orbiting scroll being supported by the first wall body to be prevented from rotating on its own axis while being capable of orbital movement; a first housing formed in a cylindrical shape along an axis about which the orbiting scroll orbits and having an internal space to accommodate the compression section; and a second housing sealing one end of the first housing along the axis, the first end plate facing the second housing. A first positioning pin protruding toward the second housing is provided on the opposing surface, a second positioning pin protruding toward the second housing is provided on a first end face of the first housing facing the second housing, and a first insertion hole into which the first positioning pin is inserted and a second insertion hole into which the second positioning pin is inserted are provided on a second end face of the second housing facing the first housing, and a first length from the opposing surface to the tip of the first positioning pin is set to be longer than a second length from the opposing surface to the tip of the second positioning pin.

[0008] According to the present disclosure, it is possible to improve the workability when assembling a scroll compressor having a fixed scroll and an orbiting scroll.

[0009] FIG. 1 is a longitudinal sectional view showing a schematic configuration of a scroll compressor according to a first embodiment of the present disclosure. FIG. 2 is a right side view of the scroll compressor shown in FIG. 1. FIG. 3 is a sectional view taken along the arrows A-A of the scroll compressor shown in FIG. 2, showing a state in which a rear housing is attached to a bearing housing. FIG. 4 is a sectional view taken along the arrows B-B of the scroll compressor shown in FIG. 2. FIG. 5 is a flowchart showing a method of assembling a scroll compressor according to a first embodiment of the present disclosure. FIG. 6 is a sectional view taken along the arrows A-A of the scroll compressor shown in FIG. 2, showing a state in which the rear housing has been removed from the bearing housing. FIG. 7 is a sectional view taken along the arrows A-A of the scroll compressor shown in FIG. 2, showing a state in which a positioning pin of a fixed scroll is partially inserted into an insertion hole of the rear housing. FIG. 8 is a sectional view taken along the arrows A-A of a modified scroll compressor shown in FIG. 2, showing a state in which the rear housing has been removed from the bearing housing. FIG. 9 is a sectional view of a scroll compressor according to a second embodiment of the present disclosure, showing a state in which a positioning pin is partially inserted into an insertion hole. FIG. 10 is a sectional view of a modified scroll compressor according to the second embodiment of the present disclosure, showing a state in which a positioning pin is partially inserted into an insertion hole. FIG. 11 is a flowchart showing a method of assembling a scroll compressor according to a second embodiment of the present disclosure.

[0010] First Embodiment A scroll compressor 100 according to an embodiment of the present disclosure will be described with reference to the drawings. The scroll compressor 100 of this embodiment is used in, for example, a vehicle air conditioner.

[0011] Fig. 1 is a vertical cross-sectional view showing a schematic configuration of a scroll compressor 100 according to this embodiment. Fig. 2 is a right side view of the scroll compressor 100 shown in Fig. 1. Fig. 3 is a cross-sectional view taken along the line A-A of the scroll compressor 100 shown in Fig. 2, showing a state in which the rear housing 20 is attached to the bearing housing 10. Fig. 4 is a cross-sectional view taken along the line B-B of the scroll compressor 100 shown in Fig. 2.

[0012] As shown in FIG. 1 , the scroll compressor 100 includes a bearing housing (first housing) 10, a rear housing (second housing) 20, a front housing (third housing) 30, a scroll compression mechanism (compression unit) 40, a motor 50, a bearing unit 60, an inverter 70, and a gasket 80.

[0013] The bearing housing 10, the rear housing 20, and the front housing 30 form the outer shell of the scroll compressor 100 and are made of an aluminum alloy. The bearing housing 10 is formed in a cylindrical shape along an axis X1 that is the center of rotation of the orbiting scroll 42. The bearing housing 10 has an internal space that accommodates a bearing portion 60 and the scroll compression mechanism 40.

[0014] The rear housing 20 seals one end of the bearing housing 10 along the axis X1, and is provided with a discharge port (not shown) for the refrigerant gas compressed by the scroll compression mechanism 40. The front housing 30 seals the other end of the bearing housing 10 along the axis X1, and is provided with an internal space that houses the motor 50 and the inverter 70. The internal space of the front housing 30 that houses the motor 50 communicates with the internal space of the bearing housing 10 that houses the bearing portion 60. The internal space that houses the motor 50 and the internal space that houses the inverter 70 are independent spaces that do not communicate with each other.

[0015] 1, a positioning pin (second positioning pin) 11 that protrudes toward the rear housing 20 is provided on an end face (first end face) 10a of the bearing housing 10 facing the rear housing 20. The positioning pin 11 is a member that extends linearly and is formed in a shaft shape. A mounting hole 10b for mounting the positioning pin 11 is formed in the end face 10a.

[0016] An end face (second end face) 20a of the rear housing 20 facing the bearing housing 10 is provided with an insertion hole (first insertion hole) 20b into which a positioning pin 11 is inserted. With the positioning pin 11 inserted into the insertion hole 20b, the end face 10a of the bearing housing 10 and the end face 20a of the rear housing 20 are arranged opposite each other. The pair of positioning pins 11 position the rear housing 20 relative to the bearing housing 10 so that it does not rotate around the axis X1.

[0017] The front housing 30 is provided with a suction port (not shown) for drawing in a refrigerant. Refrigerant supplied from the outside is introduced into the interior space of the front housing 30 through the suction port. The refrigerant introduced into the front housing 30 passes through the motor 50 along the axis X1 and is guided toward the scroll compression mechanism 40. The refrigerant drawn in through the suction port is a mixed refrigerant (fluid) containing lubricating oil and refrigerant gas.

[0018] The scroll compression mechanism 40 is a device that is disposed inside the bearing housing 10 and rotates about the axis X1 to compress the refrigerant gas. The scroll compression mechanism 40 has a fixed scroll 41 that is fixedly sandwiched between the bearing housing 10 and the rear housing 20, and an orbiting scroll 42 that meshes with the fixed scroll 41. The scroll compression mechanism 40 compresses the refrigerant gas by causing the orbiting scroll 42 to revolve relative to the fixed scroll 41 using the driving force of the motor 50.

[0019] The fixed scroll 41 has a spiral wrap (first wall) 41B that is a wall provided on one side of an end plate (first end plate) 41A. The end plate 41A has a discharge port 41C formed therein through which the refrigerant gas compressed by the fixed scroll 41 and the orbiting scroll 42 is discharged.

[0020] The orbiting scroll 42 has a spiral wrap (second wall) 42B, which is a wall provided on one side of an end plate (second end plate) 42A. The orbiting scroll 42 is connected to an eccentric shaft (not shown) connected to a motor 50, and is supported so as to be capable of orbital rotation via a rotation-preventing mechanism (not shown). The orbiting scroll 42 is meshed with the spiral wrap 41B of the fixed scroll 41, and is supported so as to be capable of orbital rotation while being prevented from rotating.

[0021] 1, the scroll compression mechanism 40 has a reed valve 43 attached to the fixed scroll 41 so as to close the discharge port 41C. The reed valve 43 opens when the pressure of the refrigerant gas in the compression chamber 40A reaches or exceeds a predetermined pressure, and guides the refrigerant gas discharged from the discharge port 41C to the discharge space 41D. The refrigerant gas guided to the discharge space 41D is then guided to the outside through a discharge port (not shown).

[0022] 3, a positioning pin (first positioning pin) 44 protruding toward the rear housing 20 is provided on an opposing surface 41Aa of the end plate 41A of the fixed scroll 41, which faces the rear housing 20. The positioning pin 44 is a member that extends linearly and is formed in a shaft shape. A mounting hole 41Ab for mounting the positioning pin 44 is formed in the opposing surface 41Aa.

[0023] An end face 20a of the rear housing 20 facing the bearing housing 10 is provided with insertion holes (second insertion holes) 20c into which positioning pins 44 are inserted. With the positioning pins 44 inserted into the insertion holes 20c, the opposing surface 41Aa of the end plate 41A and the end face 20a of the rear housing 20 are arranged opposite each other. The pair of positioning pins 44 position the fixed scroll 41 relative to the rear housing 20 so that it does not rotate around the axis X1.

[0024] The motor 50 is a device that causes the orbiting scroll 42 of the scroll compression mechanism 40 to revolve about the axis X1 relative to the fixed scroll 41. The motor 50 is connected to the orbiting scroll 42 via an eccentric shaft (not shown).

[0025] The bearing 60 is a member that supports a rotating shaft (not shown) that rotates about the axis X1 by the motor 50. An eccentric shaft that is disposed eccentrically with respect to the axis X1 is provided at the end of the rotating shaft on the scroll compression mechanism 40 side.

[0026] The inverter 70 is a device that generates a drive voltage for driving the motor 50 and controls the rotation speed of the motor 50. The gasket 80 is disposed between the end face 10 a of the bearing housing 10 on the rear housing 20 side and the end face 20 a of the rear housing 20 on the bearing housing 10 side, and is a member that forms a sealing area to prevent refrigerant from leaking out from between the end face 10 a and the end face 20 a.

[0027] As shown in Figures 2 and 4, the rear housing 20 has insertion holes 20d formed at multiple locations (six locations in Figure 2) in the circumferential direction CD, into which fastening bolts 90 are inserted to generate a pressing force that presses the rear housing 20 toward the bearing housing 10.

[0028] A fastening hole (not shown) is formed in the end of the front housing 30 on the bearing housing 10 side, into which a male screw formed at the tip of a fastening bolt 90 is fastened. The bearing housing 10 is fixed in a state sandwiched between the rear housing 20 and the front housing 30 along the axis X1 by fastening the fastening bolt 90 inserted into the insertion hole 20d of the rear housing 20 to the fastening hole formed in the front housing 30.

[0029] Next, a method for assembling the scroll compressor of this embodiment will be described with reference to Figures 5 to 7. Figure 5 is a flowchart showing a method for assembling the scroll compressor 100 according to the first embodiment of the present disclosure. Figure 6 is a cross-sectional view of the scroll compressor 100 shown in Figure 2 taken along the line A-A, showing a state in which the rear housing 20 has been removed from the bearing housing 10. Figure 7 is a cross-sectional view of the scroll compressor 100 shown in Figure 2 taken along the line A-A, showing a state in which the positioning pin 44 of the fixed scroll 41 has been partially inserted into the insertion hole 20c of the rear housing 20.

[0030] In step S101 , the worker inserts the scroll compression mechanism 40 and the bearing portion 60 into the bearing housing 10 .

[0031] In step S102, the worker moves the end face 20a of the rear housing 20 toward the opposing surface 41Aa of the end plate 41A of the fixed scroll 41, and brings the tip of the positioning pin 44 into contact with the end face 20a. With the positioning pin 44 in contact with the end face 20a, the worker rotates the rear housing 20 about the axis X1, thereby inserting the positioning pin 44 into the insertion hole 20c. When the positioning pin 44 is inserted into the insertion hole 20c, the fixed scroll 41 is positioned with respect to the rear housing 20.

[0032] 6, the positioning pin 44 is not inserted into the insertion hole 20c when the rear housing 20 is removed from the bearing housing 10. As shown in Fig. 6, a length (first length) L1 along the axis X1 from the opposing surface 41Aa of the fixed scroll 41 to the tip of the positioning pin 44 is set to be longer than a length (second length) L2 from the opposing surface 41Aa to the tip of the positioning pin 11.

[0033] As shown in Fig. 6, the lengths of the positioning pin 11 and the positioning pin 44 are the same, and the depth of the mounting hole 10b is made deeper than the depth of the mounting hole 41Ab, so that L1 is longer than L2. Alternatively, for example, as shown in Fig. 8, the positions of the tips of the positioning pin 11 and the positioning pin 44 in the direction along the axis X1 may be the same, and the length L1A from the tip of the positioning pin 44 to the entrance of the insertion hole 20c may be set shorter than the length L2A from the tip of the positioning pin 11 to the entrance of the insertion hole 20b. Fig. 8 is a cross-sectional view taken along the arrows A-A of a modified example of the scroll compressor 100 shown in Fig. 2, showing the rear housing 20 removed from the bearing housing 10.

[0034] When the operator moves the end face 20a of the rear housing 20 toward the opposing surface 41Aa of the end plate 41A of the fixed scroll 41 and brings the tip of the positioning pin 44 into contact with the end face 20a, the state shown in Fig. 7 is reached. As shown in Fig. 7, while the tip of the positioning pin 44 is in contact with the end face 20a, the tip of the positioning pin 11 is in a non-contact state with the end face 20a. The operator further moves the end face 20a of the rear housing 20 from the state shown in Fig. 7 toward the opposing surface 41Aa and brings the tip of the positioning pin 11 into contact with the end face 20a.

[0035] In step S103, the worker rotates the rear housing 20 about the axis X1 with the positioning pin 11 in contact with the end face 20a, thereby inserting the positioning pin 11 into the insertion hole 20b, resulting in the state shown in Fig. 3. When the positioning pin 11 is inserted into the insertion hole 20b, the rear housing 20 is positioned relative to the bearing housing 10.

[0036] In step S104, the worker seals one end of the bearing housing 10 along the axis X1 with the rear housing 20. The worker inserts a fastening bolt 90 into the insertion hole 20d of the rear housing 20 and fastens the tip of the fastening bolt 90 into a fastening hole formed in the front housing 30. By fastening the fastening bolt 90 into the fastening hole of the front housing 30, the bearing housing 10 is fixed in a state where it is sandwiched between the rear housing 20 and the front housing 30 along the axis X1. One end of the bearing housing 10 is sealed by the rear housing 20.

[0037] The operation and effects of the scroll compressor 100 of the present embodiment described above will be described. According to the scroll compressor 100 of the present embodiment, the length L1 from the opposing surface 41Aa of the end plate 41A of the fixed scroll 41 to the tip of the positioning pin 44 is set to be longer than the length L2 from the opposing surface 41Aa to the tip of the positioning pin 11. Therefore, when an operator moves the end surface 20a of the rear housing 20 toward the end surface 10a of the bearing housing 10, the positioning pin 44 comes into contact with the end surface 20a. The operator can insert the positioning pin 44 into the insertion hole 20c by rotating the rear housing 20 about the axis X1 with the positioning pin 44 in contact with the end surface 20a.

[0038] Furthermore, according to the scroll compressor 100 of this embodiment, inserting the positioning pin 44 into the insertion hole 20c brings the positioning pin 11 into contact with the end face 20a. The operator can insert the positioning pin 11 into the insertion hole 20b by rotating the rear housing 20 about the axis X1 with the positioning pin 11 in contact with the end face 20a. Because the positioning pin 44 is inserted into the insertion hole 20c when the positioning pin 11 is inserted into the insertion hole 20b, the phase of the rear housing 20 about the axis X1 relative to the bearing housing 10 can be set to a desired phase while maintaining the phase of the fixed scroll 41 about the axis X1 relative to the rear housing 20. By performing the operations of inserting the positioning pin 44 into the insertion hole 20c and inserting the positioning pin 11 into the insertion hole 20b in a stepwise manner, the workability of assembling the scroll compressor 100 having the fixed scroll 41 and the orbiting scroll 42 can be improved compared to performing these operations simultaneously.

[0039] According to the scroll compressor 100 of this embodiment, the fixed scroll 41 is positioned in the rear housing 20 by the plurality of positioning pins 44, thereby making it possible to reliably align the central axis of the fixed scroll 41 with the central axis of the rear housing 20. Furthermore, the rear housing 20 is positioned in the bearing housing 10 by the plurality of positioning pins 11, thereby making it possible to reliably align the central axis of the rear housing 20 with the central axis of the bearing housing 10.

[0040] Second Embodiment Next, a second embodiment of the present disclosure will be described with reference to the drawings. This embodiment is a modification of the first embodiment, and unless otherwise specifically described below, it is assumed to be the same as the first embodiment, and therefore the description below will be omitted.

[0041] In the scroll compressor 100 of the first embodiment, the bearing housing 10 is provided with a positioning pin 11, the fixed scroll 41 is provided with a positioning pin 44, and the rear housing 20 is provided with an insertion hole 20b and an insertion hole 20c. In contrast, in the scroll compressor 100A of the present embodiment, the bearing housing 10 is provided with an insertion hole 10b1, the fixed scroll 41 is provided with an insertion hole 41Ab1, and the rear housing 20 is provided with a positioning pin 21 and a positioning pin 22.

[0042] 9 is a cross-sectional view of a scroll compressor 100A according to a second embodiment of the present disclosure, showing a state in which a positioning pin 21 is partially inserted into an insertion hole 41Ab1. As shown in Fig. 9, an end face 10a of the bearing housing 10 facing the rear housing 20 is provided with an insertion hole 10b1 into which a positioning pin (second positioning pin) 22 is inserted. An opposing surface 41Aa of the end plate 41A of the fixed scroll 41 facing the rear housing 20 is provided with an insertion hole 41Ab1 into which a positioning pin (first positioning pin) 21 is inserted.

[0043] As shown in Figure 9, the end surface 20a of the rear housing 20 is provided with a positioning pin 22 to be inserted into the insertion hole 10b1. The positioning pin 22 is a member that extends linearly and is formed in an axial shape. The end surface 20a is formed with an attachment hole 20b1 for attaching the positioning pin 22. The end surface 20a of the rear housing 20 is provided with a positioning pin 21 to be inserted into the insertion hole 41Ab1. The positioning pin 21 is a member that extends linearly and is formed in an axial shape. The end surface 20a is formed with an attachment hole 20c1 for attaching the positioning pin 21.

[0044] As shown in FIG. 9 , a length (first length) L3 along the axis X1 from the end surface 20a of the rear housing 20 to the tip of the positioning pin 21 is set to be longer than a length (second length) L4 from the end surface 20a to the tip of the positioning pin 22. As shown in FIG. 9 , the depths of the mounting holes 20b1 and 20c1 are set to be the same, and the length of the positioning pin 21 is set to be longer than the length of the positioning pin 22, so that L3 is set to be longer than L4. Alternatively, for example, as shown in FIG. 10 , the positions of the tips of the positioning pin 21 and the positioning pin 22 in the direction along the axis X1 may be set to be the same, and a length L3A from the end surface 20a to the insertion hole 41Ab1 may be set to be shorter than a length L4A from the end surface 20a to the insertion hole 41Ab1. FIG. 10 is a cross-sectional view of a modified example of the scroll compressor 100A according to the second embodiment of the present disclosure, showing the positioning pin 21 partially inserted into the insertion hole 41Ab1.

[0045] A pair of insertion holes 41Ab1 is formed in the opposing surface 41Aa of the end plate 41A. A pair of insertion holes 10b1 is formed in the end surface 10a of the bearing housing 10. A pair of positioning pins 21 and a pair of positioning pins 22 are formed in the end surface 20a of the rear housing 20.

[0046] Next, a method for assembling the scroll compressor according to this embodiment will be described with reference to Fig. 11. Fig. 11 is a flowchart showing a method for assembling the scroll compressor 100A according to the second embodiment of the present disclosure.

[0047] In step S201, the worker inserts the scroll compression mechanism 40 and the bearing portion 60 into the bearing housing 10.

[0048] In step S202, the worker moves the end surface 20a of the rear housing 20 toward the opposing surface 41Aa of the end plate 41A of the fixed scroll 41, and brings the tip of the positioning pin 21 into contact with the opposing surface 41Aa. With the positioning pin 21 in contact with the opposing surface 41Aa, the worker rotates the rear housing 20 about the axis X1, thereby inserting the positioning pin 21 into the insertion hole 41Ab1. When the positioning pin 21 is inserted into the insertion hole 41Ab1, the fixed scroll 41 is positioned with respect to the rear housing 20.

[0049] When the operator moves the end face 20a of the rear housing 20 toward the opposing surface 41Aa of the end plate 41A of the fixed scroll 41 and brings the tip of the positioning pin 21 into contact with the opposing surface 41Aa, the state shown in Fig. 9 is reached. As shown in Fig. 8, while the tip of the positioning pin 21 is in contact with the opposing surface 41Aa, the tip of the positioning pin 22 is in a non-contact state with the end face 10a. The operator further moves the end face 20a of the rear housing 20 from the state shown in Fig. 9 toward the opposing surface 41Aa and brings the tip of the positioning pin 22 into contact with the end face 10a.

[0050] In step S203, the worker rotates the rear housing 20 about the axis X1 with the positioning pin 22 in contact with the end face 10a, thereby inserting the positioning pin 22 into the insertion hole 10b1. When the positioning pin 22 is inserted into the insertion hole 10b1, the rear housing 20 is positioned relative to the bearing housing 10.

[0051] In step S204, the worker seals one end of the bearing housing 10 along the axis X1 with the rear housing 20. The worker inserts a fastening bolt 90 into the insertion hole 20d of the rear housing 20 and fastens the tip of the fastening bolt 90 into a fastening hole formed in the front housing 30. By fastening the fastening bolt 90 into the fastening hole of the front housing 30, the bearing housing 10 is fixed in a state where it is sandwiched between the rear housing 20 and the front housing 30 along the axis X1. One end of the bearing housing 10 is sealed by the rear housing 20.

[0052] According to the scroll compressor 100A of this embodiment, the length L3 from the end face 20a of the rear housing 20 to the tip of the positioning pin 21 is set to be longer than the length L4 from the end face 20a to the tip of the positioning pin 22. Therefore, when an operator moves the end face 20a of the rear housing 20 toward the end face 10a of the bearing housing 10, the positioning pin 21 comes into contact with the opposing surface 41Aa of the fixed scroll 41. The operator can insert the positioning pin 21 into the insertion hole 41Ab1 by rotating the rear housing 20 about the axis X1 with the positioning pin 21 in contact with the opposing surface 41Aa.

[0053] Furthermore, according to the scroll compressor 100A of this embodiment, inserting the positioning pin 21 into the insertion hole 41Ab1 brings the positioning pin 22 into contact with the end face 10a. The operator can insert the positioning pin 22 into the insertion hole 10b1 by rotating the rear housing 20 about the axis X1 with the positioning pin 22 in contact with the end face 10a. Because the positioning pin 21 is inserted into the insertion hole 41Ab1 when the positioning pin 22 is inserted into the insertion hole 41Ab1, the phase of the fixed scroll 41 about the axis X1 relative to the rear housing 20 can be adjusted to a desired phase about the axis X1 relative to the bearing housing 10 while maintaining the phase of the fixed scroll 41 about the axis X1 relative to the rear housing 20. By performing the operations of inserting the positioning pin 21 into the insertion hole 41Ab1 and inserting the positioning pin 22 into the insertion hole 10b1 in a stepwise manner, the workability of assembling the scroll compressor 100A having the fixed scroll 41 and the orbiting scroll 42 can be improved compared to performing these operations simultaneously.

[0054] According to the scroll compressor 100A of this embodiment, the fixed scroll 41 is positioned in the rear housing 20 by a plurality of positioning pins 21, thereby ensuring that the central axis of the fixed scroll 41 and the central axis of the rear housing 20 are aligned. Furthermore, the rear housing 20 is positioned in the bearing housing 10 by a plurality of positioning pins 22, thereby ensuring that the central axis of the rear housing 20 and the central axis of the bearing housing 10 are aligned.

[0055] The scroll compressor according to the present embodiment described above can be understood as follows, for example: A scroll compressor (100) according to a first aspect of the present disclosure includes a compression section (40) having a fixed scroll (41) having a spiral-shaped first wall body (41B) erected on one side of a first end plate (41A), and an orbiting scroll (42) having a spiral-shaped second wall body (42B) erected on one side of a second end plate (42A), the orbiting scroll (42) being supported so as to be capable of orbital revolution while being prevented from rotating by being meshed with the first wall body, a first housing (10) formed in a cylindrical shape along an axis (X1) about which the orbiting scroll orbits and having an internal space for accommodating the compression section, and a second housing (20) sealing one end of the first housing along the axis, A first positioning pin (44) protruding toward the second housing is provided on the opposing opposing surface (41Aa), a second positioning pin (11) protruding toward the second housing is provided on a first end face (10a) of the first housing on the second housing side, and a first insertion hole (20c) into which the first positioning pin is inserted and a second insertion hole (20b) into which the second positioning pin is inserted are provided on a second end face (20a) of the second housing on the first housing side, and a first length (L1) from the opposing surface to the tip of the first positioning pin is set to be longer than a second length (L2) from the opposing surface to the tip of the second positioning pin.

[0056] In the scroll compressor according to the first aspect of the present disclosure, a first length from the opposing surface of the first end plate of the fixed scroll to the tip of the first positioning pin is set to be longer than a second length from the opposing surface to the tip of the second positioning pin. Therefore, when an operator moves the second end face of the second housing toward the first end face of the first housing, the first positioning pin comes into contact with the second end face. The operator can insert the first positioning pin into the first insertion hole by rotating the second housing about its axis with the first positioning pin in contact with the second end face.

[0057] Furthermore, in the scroll compressor according to the first aspect of the present disclosure, inserting the first positioning pin into the first insertion hole causes the second positioning pin to contact the second end surface. The worker can insert the second positioning pin into the second insertion hole by rotating the second housing about its axis while the second positioning pin is in contact with the second end surface. Because the first positioning pin is inserted into the first insertion hole when the second positioning pin is inserted into the second insertion hole, the phase of the second housing about its axis relative to the first housing can be adjusted to a desired phase while maintaining the phase of the fixed scroll about its axis relative to the second housing. By performing the steps of inserting the first positioning pin into the first insertion hole and the second positioning pin into the second insertion hole in this manner, the workability of assembling a scroll compressor having a fixed scroll and an orbiting scroll can be improved compared to performing these steps simultaneously.

[0058] A scroll compressor according to a second aspect of the present disclosure is the same as the first aspect, but further includes the following configuration: a plurality of first positioning pins are provided on the opposing surface of the first end plate, a plurality of second positioning pins are provided on the first end face of the first housing, and a plurality of first insertion holes and a plurality of second insertion holes are provided on the second end face of the second housing.

[0059] In the scroll compressor according to the second aspect of the present disclosure, the fixed scroll is positioned in the second housing by a plurality of first positioning pins, thereby ensuring that the central axis of the fixed scroll and the central axis of the second housing are aligned. Also, the second housing is positioned in the first housing by a plurality of second positioning pins, thereby ensuring that the central axis of the second housing and the central axis of the first housing are aligned.

[0060] A scroll compressor (100) according to a third aspect of the present disclosure includes a compression section including a fixed scroll having a spiral-shaped first wall body erected on one side surface of a first end plate, and an orbiting scroll having a spiral-shaped second wall body erected on one side surface of a second end plate, the orbiting scroll being supported by the first wall body to be prevented from rotating on its own axis while being capable of orbital movement; a first housing formed in a cylindrical shape along an axis about which the orbiting scroll orbits and having an internal space for accommodating the compression section; and a second housing sealing one end of the first housing along the axis, A first insertion hole (41Ab1) is provided in the opposing surface facing the housing, a second insertion hole (10b1) is provided in a first end face of the first housing on the second housing side, and a first positioning pin (21) to be inserted into the first insertion hole and a second positioning pin (22) to be inserted into the second insertion hole are provided in a second end face of the second housing on the first housing side, and a first length (L3) from the second end face to the tip of the first positioning pin is set to be longer than a second length (L4) from the second end face to the tip of the second positioning pin.

[0061] According to the scroll compressor of the third aspect of the present disclosure, the first length from the second end face of the second housing to the tip of the first positioning pin is set to be longer than the second length from the second end face to the tip of the second positioning pin. Therefore, when an operator moves the second end face of the second housing toward the first end face of the first housing, the first positioning pin comes into contact with the opposing surface of the fixed scroll. The operator can insert the first positioning pin into the first insertion hole by rotating the second housing about its axis with the first positioning pin in contact with the opposing surface.

[0062] According to a scroll compressor according to a third aspect of the present disclosure, inserting the first positioning pin into the first insertion hole causes the second positioning pin to contact the first end surface. The worker can insert the second positioning pin into the second insertion hole by rotating the second housing about its axis while the second positioning pin is in contact with the first end surface. Because the first positioning pin is inserted into the first insertion hole when the second positioning pin is inserted into the second insertion hole, the phase of the second housing about its axis relative to the first housing can be adjusted to a desired phase while maintaining the phase of the fixed scroll relative to the second housing. By performing the steps of inserting the first positioning pin into the first insertion hole and the second positioning pin into the second insertion hole in this manner, the workability of assembling a scroll compressor having a fixed scroll and an orbiting scroll can be improved compared to performing these steps simultaneously.

[0063] A scroll compressor according to a fourth aspect of the present disclosure is the third aspect, further including the following configuration: a plurality of first insertion holes are provided in the opposing surface of the first end plate, a plurality of second insertion holes are provided in the first end face of the first housing, and a plurality of first positioning pins and a plurality of second positioning pins are provided in the second end face of the second housing.

[0064] According to the scroll compressor of the fourth aspect of the present disclosure, the fixed scroll is positioned in the second housing by the plurality of first positioning pins, thereby ensuring that the central axis of the fixed scroll and the central axis of the second housing are aligned. Also, the second housing is positioned in the first housing by the plurality of second positioning pins, thereby ensuring that the central axis of the second housing and the central axis of the first housing are aligned.

[0065] In a method for assembling a scroll compressor according to a fifth aspect of the present disclosure, the scroll compressor comprises: a compression section including a fixed scroll having a spiral-shaped first wall body erected on one side surface of a first end plate; and an orbiting scroll having a spiral-shaped second wall body erected on one side surface of a second end plate and supported by the first wall body so as to be prevented from rotating on its own axis and to be capable of orbital orbital movement; a first housing formed in a cylindrical shape along an axis about which the orbiting scroll orbits and having an internal space for accommodating the compression section; and a second housing sealing one end of the first housing along the axis, wherein a first positioning pin protruding toward the second housing is provided on an opposing surface of the first end plate facing the second housing, and a first end face of the first housing on the second housing side is provided with a first positioning pin protruding toward the second housing. A protruding second positioning pin is provided, and a second end face of the second housing facing the first housing is provided with a first insertion hole into which the first positioning pin is inserted and a second insertion hole into which the second positioning pin is inserted, and a first length from the opposing surface to the tip of the first positioning pin is set to be longer than a second length from the opposing surface to the tip of the second positioning pin, and the method includes an insertion step (S101) of inserting the compression part into the first housing, a first positioning step (S102) of inserting the first positioning pin into the first insertion hole, a second positioning step (S103) of rotating the second housing around the axis to insert the second positioning pin into the second insertion hole, and a sealing step (S104) of sealing one end of the first housing along the axis with the second housing.

[0066] According to the method for assembling a scroll compressor relating to the fifth aspect of the present disclosure, by performing the work of inserting the first positioning pin into the first insertion hole and the work of inserting the second positioning pin into the second insertion hole in stages, it is possible to improve the workability when assembling a scroll compressor having a fixed scroll and a rotating scroll compared to performing these works simultaneously.

[0067] In a method for assembling a scroll compressor according to a sixth aspect of the present disclosure, the scroll compressor comprises: a compression section including a fixed scroll having a spiral-shaped first wall body erected on one side surface of a first end plate; and an orbiting scroll having a spiral-shaped second wall body erected on one side surface of a second end plate and supported by the first wall body to be prevented from rotating on its own axis and to be capable of orbital orbital movement; a first housing formed in a cylindrical shape along an axis about which the orbiting scroll orbits and having an internal space to accommodate the compression section; and a second housing sealing one end of the first housing along the axis, wherein a first insertion hole is formed in an opposing surface of the first end plate facing the second housing. a first end face of the first housing facing the second housing has a second insertion hole; a second end face of the second housing facing the first housing has a first positioning pin to be inserted into the first insertion hole and a second positioning pin to be inserted into the second insertion hole; and the compression unit includes an insertion step of inserting the compression portion into the first housing, a first positioning step of inserting the first positioning pin into the first insertion hole, a second positioning step of rotating the second housing around the axis to insert the second positioning pin into the second insertion hole, and a sealing step of sealing one end of the first housing along the axis with the second housing.

[0068] According to the method for assembling a scroll compressor relating to the sixth aspect of the present disclosure, by performing the work of inserting the first positioning pin into the first insertion hole and the work of inserting the second positioning pin into the second insertion hole in stages, it is possible to improve the workability when assembling a scroll compressor having a fixed scroll and a rotating scroll compared to performing these works simultaneously.

[0069] DESCRIPTION OF SYMBOLS 10 Bearing housing (first housing) 10a End face 10b Mounting hole 10b1 Insertion hole 11, 21, 22 Positioning pin 20 Rear housing (second housing) 20a End face 20b, 20c, 20d Insertion hole 20b1, 20c1 Mounting hole 30 Front housing (third housing) 40 Scroll compression mechanism (compression section) 40A Compression chamber 41 Fixed scroll 41A End plate 41Aa Opposing surface 41Ab Mounting hole 41Ab1 Insertion hole 41B Spiral wrap 41C Discharge port 41D Discharge space 42 Orbiting scroll 43 Reed valve 44 Positioning pin 50 Motor 60 Bearing section 70 Inverter 80 Gasket 90 Fastening bolt 100, 100A Scroll compressor X1 axis line

Claims

1. A compression unit including a fixed scroll having a spiral-shaped first wall body erected on one side of a first end plate, and an orbiting scroll having a spiral-shaped second wall body erected on one side of a second end plate and supported by the first wall body to be prevented from rotating on its own axis while being capable of orbital movement; a first housing formed in a cylindrical shape along an axis about which the orbiting scroll orbits and having an internal space for accommodating the compression unit; and a second housing sealing one end of the first housing along the axis, wherein a first positioning pin protruding toward the second housing is provided on an opposing surface of the first end plate facing the second housing, a second positioning pin protruding toward the second housing, and a first insertion hole into which the first positioning pin is inserted and a second insertion hole into which the second positioning pin is inserted, A scroll compressor in which a first length from the opposing surface to the tip of the first positioning pin is set to be longer than a second length from the opposing surface to the tip of the second positioning pin.

2. A scroll compressor as described in claim 1, wherein a plurality of first positioning pins are provided on the opposing surface of the first end plate, a plurality of second positioning pins are provided on the first end face of the first housing, and a plurality of first insertion holes and a plurality of second insertion holes are provided on the second end face of the second housing.

3. A compression section including a fixed scroll having a spiral-shaped first wall body erected on one side of a first end plate, and an orbiting scroll having a spiral-shaped second wall body erected on one side of a second end plate and supported so as to be capable of orbital movement while meshing with the first wall body and being prevented from rotating on its own axis; a first housing formed in a cylindrical shape along an axis about which the orbiting scroll orbits and having an internal space for accommodating the compression section; and a second housing sealing one end of the first housing along the axis, wherein a first insertion hole is formed in the opposing surface of the first end plate facing the second housing, a second insertion hole is formed in a first end face of the first housing facing the second housing, and a first positioning pin to be inserted into the first insertion hole and a second positioning pin to be inserted into the second insertion hole are formed in a second end face of the second housing facing the first housing, A scroll compressor in which a first length from the second end face to the tip of the first positioning pin is set to be longer than a second length from the second end face to the tip of the second positioning pin.

4. A scroll compressor as described in claim 3, wherein a plurality of first insertion holes are provided in the opposing surface of the first end plate, a plurality of second insertion holes are provided in the first end face of the first housing, and a plurality of first positioning pins and a plurality of second positioning pins are provided in the second end face of the second housing.

5. A method for assembling a scroll compressor, wherein the scroll compressor comprises: a compression section including a fixed scroll having a spiral-shaped first wall body erected on one side of a first end plate; and an orbiting scroll having a spiral-shaped second wall body erected on one side of a second end plate and supported so as to be capable of orbital movement while meshing with the first wall body and being prevented from rotating on its own axis; a first housing formed in a cylindrical shape along an axis about which the orbiting scroll orbits and having an internal space for accommodating the compression section; and a second housing sealing one end of the first housing along the axis, wherein a first positioning pin protruding toward the second housing is provided on an opposing surface of the first end plate facing the second housing; a second positioning pin protruding toward the second housing is provided on a first end face of the first housing facing the second housing; and a first insertion hole into which the first positioning pin is inserted and a second insertion hole into which the second positioning pin is inserted, a first length from the opposing surface to the tip of the first positioning pin is set to be longer than a second length from the opposing surface to the tip of the second positioning pin, the method comprising: an insertion step of inserting the compression section into the first housing; a first positioning step of inserting the first positioning pin into the first insertion hole; a second positioning step of rotating the second housing around the axis to insert the second positioning pin into the second insertion hole; and a sealing step of sealing one end of the first housing along the axis with the second housing.

6. A method for assembling a scroll compressor, the scroll compressor comprising: a compression section including a fixed scroll having a spiral-shaped first wall body erected on one side of a first end plate; and an orbiting scroll having a spiral-shaped second wall body erected on one side of a second end plate and supported so as to be capable of orbital movement while meshing with the first wall body and being prevented from rotating on its own axis; a first housing formed in a cylindrical shape along an axis about which the orbiting scroll orbits and having an internal space for accommodating the compression section; and a second housing sealing one end of the first housing along the axis, wherein a first insertion hole is provided in the opposing surface of the first end plate facing the second housing, a second insertion hole is provided in a first end face of the first housing facing the second housing, and a first positioning pin to be inserted into the first insertion hole and a second positioning pin to be inserted into the second insertion hole are provided in a second end face of the second housing facing the first housing, a first positioning step of inserting the first positioning pin into the first insertion hole; a second positioning step of rotating the second housing about the axis to insert the second positioning pin into the second insertion hole; and a sealing step of sealing one end of the first housing along the axis with the second housing.

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