JP2014181686A - Compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compressor capable of simplifying an assembling operation and reducing manufacturing costs.SOLUTION: A compressor in an embodiment comprises first and second housings 1, 3, and a vane-type compression mechanism C. The first housing 1 has a first wall 1a and a first outer peripheral wall 1b, and a first housing space 5a is formed inside the first housing. Also, a female screw part 7 is formed on the first outer peripheral wall 1b. The second housing 3 has a second wall 3a and a second outer peripheral wall 3b, and a second housing space 5b is formed inside the second housing. Also, a male screw part 9 is formed on the second outer peripheral wall 3b. A housing space 5 is formed by the first and second housing spaces 5a, 5b. In the compressor, when the first and second housings 1, 3 and the vane-type compression mechanism C are assembled with each other, the female screw part 7 is screwed with the male screw part 9 while housing the vane-type compression mechanism C in the housing space 5, so that the first housing 1 and the second housing 3 can be fixed.

Description

  The present invention relates to a compressor.

  Patent Document 1 discloses a conventional compressor. The compressor includes a first housing, a second housing, and a compression mechanism. The first housing and the second housing are fixed to each other while forming an accommodation space therein. The compression mechanism is fixed in a state of being accommodated in the accommodation space. This compression mechanism has a compression chamber. The volume of the compression chamber is changed by the rotation of the rotation shaft, so that the refrigerant in the suction chamber is sucked and compressed, and the compressed refrigerant is discharged into the discharge chamber.

  In this compressor, the first housing, the second housing, and the compression mechanism are assembled by fixing the first housing and the second housing with a plurality of bolts while accommodating the compression mechanism in the accommodation space. The compression mechanism is fixed in the accommodation space by fixing the first housing and the second housing.

JP2012-26330A

  However, in order to fix the first housing and the second housing, the conventional compressor needs to individually fasten a plurality of bolts. For this reason, in this compressor, assembly work is complicated.

  In addition, this compressor requires a plurality of bolts, which increases the number of parts. For this reason, it is difficult to reduce the manufacturing cost with this compressor.

  The present invention has been made in view of the above-described conventional situation, and it is an object to be solved to provide a compressor capable of simplifying the assembling work and reducing the manufacturing cost.

The compressor according to the present invention includes a plurality of housing members that are fixed to each other while forming a storage space therein, and a compression chamber that compresses the refrigerant in the suction chamber and discharges the refrigerant in the suction chamber by the rotation of the rotation shaft A compression mechanism having
The compression mechanism is housed and fixed in the housing space, thereby forming the suction chamber and the discharge chamber in the housing space,
Each of the housing members is a compressor in which a suction port that communicates the suction chamber and the outside, and a discharge port that communicates the discharge chamber and the outside,
At least two of the housing members are fixed by screwing the housing members together (claim 1).

  In the compressor of the present invention, at least two of the plurality of housing members can be fixed by screwing together the housing members. For this reason, in this compressor, it becomes possible to fix these two housing members easily.

  Moreover, in this compressor, when fixing these two housing members, members, such as a volt | bolt, become unnecessary. For this reason, this compressor can also reduce the number of parts.

  Therefore, according to the compressor of the present invention, the assembling work can be simplified and the manufacturing cost can be reduced.

  In the compressor of the present invention, the number of housing members can be arbitrarily designed as long as it is two or more. Here, when there are three or more housing members, if the two housing members are fixed by screwing together, the remaining one housing member may be fixed by, for example, a bolt or the like. Moreover, when there are three or more housing members, all the housing members may be fixed by screwing each.

  In the compressor of the present invention, the housing member has a cup shape having a first opening at one end, a first housing having a first threaded portion formed at one end side, and a cup having a second opening at the other end. A second screw portion that is shaped and can be screwed to the first screw portion is formed on the other end side, and the first opening and the second opening are closed by screwing the first screw portion and the second screw portion. Possible second housing. Preferably, the first housing or the second housing is formed with a boss that is sealed and exposed while rotatably supporting the rotating shaft.

  In this case, the housing member is constituted by the first housing and the second housing. In this compressor, since the first housing and the second housing are both cup-shaped, an accommodation space is formed by the first housing and the second housing. Thereby, in this compressor, if the first screw portion and the second screw portion are screwed together while the compression mechanism is housed in the housing space, the first housing and the second housing can be fixed and housed. A compression mechanism can be fixed in the space. For this reason, in this compressor, the assembly | attachment operation | work of a 1st housing, a 2nd housing, and a compression mechanism can be simplified more. Moreover, in this compressor, since a bolt etc. are unnecessary when fixing a 1st housing and a 2nd housing, a number of parts can be reduced.

  Thus, when the housing member is constituted by the first housing and the second housing, for example, the suction port and the discharge port can be formed in one of the first housing and the second housing.

  In particular, it is preferable that a suction port is formed in one of the first housing and the second housing, and a discharge port is formed in the other of the first housing and the second housing. In this case, the degree of freedom in designing the compressor can be increased.

  Further, it is preferable that the relative angle between the suction port and the discharge port is determined only by screwing the first screw portion and the second screw portion. Here, screwing the first screw portion and the second screw portion means that the first housing and the second housing are fixed by screwing the first screw portion and the second screw portion. Refers to that. That is, in this compressor, if the first screw portion and the second screw portion are screwed together and the first housing and the second housing are fixed, the relative relationship between the suction port and the discharge port is not required without any additional work. The angle will be determined. For this reason, in this compressor, it is possible to further simplify the assembly work.

  In the compressor of the present invention, the relative angle between the suction port and the discharge port can be determined, for example, by adjusting the start position of the first screw portion and the start position of the second screw portion. Then, by adjusting the first screw portion and the like in this manner, in this compressor, it is possible to arbitrarily determine the relative angle between the suction port and the discharge port. For this reason, in this compressor, it becomes possible to make the freedom degree of design higher.

  In the compressor of the present invention, a fine spiral space is formed between the first screw portion and the second screw portion by screwing the first screw portion and the second screw portion, and the housing is formed by the labyrinth effect. The refrigerant gas is difficult to leak from the member. Thus, in this compressor, since the first screw portion and the second screw portion are screwed together, these can function as a sealing surface, so that the air tightness inside the compressor with respect to the outside of the compressor is ensured. It becomes possible to do. Here, in order to ensure the airtightness of the inside of the compressor with respect to the outside of the compressor with higher certainty, a sealing material can be provided on the facing surface where the first housing and the second housing face each other. For example, in the first housing and the second housing, the sealing material can be provided in an inner region than the first screw portion and the second screw portion.

  In particular, in the compressor according to the present invention, the first screw portion and the second screw portion are positioned on the opposing surfaces of the first housing and the second housing and are located outside the first screw portion and the second screw portion, and the first screw portion and the second screw portion are screwed. It is preferable that a sealing material that is compressed by being joined to seal the inside of the compressor is provided.

  Here, the outer region than the first screw portion and the second screw portion refers to a side closer to the outside of the compressor than the first screw portion and the second screw portion in the first housing and the second housing. For this reason, in the compressor in which the sealing material is provided outside the first screw portion and the second screw portion, the airtightness due to the sealing material is closer to the outside of the compressor than the first screw portion and the second screw portion. Is secured. On the contrary, the inner region than the first screw portion and the second screw portion refers to a side closer to the inside of the compressor than the first screw portion and the second screw portion in the first housing and the second housing.

  For this reason, by providing the sealing material in the outer region rather than the first screw portion and the second screw portion, the sealing material is easily provided compared to the case of providing the inner region than the first screw portion and the second screw portion. It becomes possible.

  Moreover, in this compressor, a sealing material is compressed by screwing a 1st thread part and a 2nd thread part. For this reason, in this compressor, it becomes possible to suitably ensure the airtightness inside the compressor with respect to the outside of the compressor while simplifying the assembling work.

  The sealing material is preferably provided so as to be compressed in the radial direction of the first housing and the second housing by screwing the first screw portion and the second screw portion. ). In this case, if the first screw portion and the second screw portion are loosened due to vibration during operation, etc., and the first housing and the second housing are loosened in the axial direction. Even so, since the sealing material is compressed in the radial direction, it is possible to favorably maintain the airtightness inside the compressor with respect to the outside of the compressor.

  As a compression mechanism in the compressor of the present invention, various configurations can be adopted in addition to a swash plate compression mechanism and a scroll compression mechanism. In particular, the compression mechanism is preferably a vane compression mechanism.

  Further, in this case, the housing member has a cup shape having a first opening at one end, a first housing having a first screw portion formed at one end side, and a cup shape having a second opening at the other end, A second screw portion that can be screwed to the first screw portion is formed on the other end side, and a second opening that can close the first opening and the second opening by screwing the first screw portion and the second screw portion. And a housing. Furthermore, the suction port may be formed in the second housing, and the discharge port may be formed in the first housing. Further, the second housing may be formed with a boss that is sealed and exposed while rotatably supporting the rotating shaft. The compression mechanism preferably includes a cylinder block, a front side plate, a rear side plate, a rotor, and a plurality of vanes. The cylinder block is fixed in the accommodation space and forms a cylinder chamber therein. The front side plate closes the front end of the cylinder chamber and forms a suction chamber. The rear side plate closes the rear end of the cylinder chamber and forms a discharge chamber. The rotor is provided so as to be able to rotate in synchronization with the rotation shaft in the cylinder chamber, and a plurality of vane grooves are formed. Each vane is provided in each vane groove so as to be able to appear and retract, and forms each compression chamber together with the inner surface of the cylinder chamber, the outer surface of the rotor, the rear surface of the front side plate, and the front surface of the rear side plate.

  In this case, a housing space is formed by the first housing and the second housing. And in this compressor, if the 1st screw part and the 2nd screw part are screwed together, storing the vane type compression mechanism in an accommodation space, while being able to fix to the 1st housing and the 2nd housing, A vane-type compression mechanism can be fixed in the accommodation space. Thereby, in this compressor, it becomes possible to assemble | attach a 1st housing, a 2nd housing, and a vane type compression mechanism easily. Moreover, in this compressor, since a bolt etc. are unnecessary when fixing a 1st housing and a 2nd housing, a number of parts can be reduced.

  According to the compressor of the present invention, the assembling work can be simplified and the manufacturing cost can be reduced.

It is sectional drawing of the compressor of Example 1. FIG. FIG. 3 is an enlarged cross-sectional view of a main part of the compressor according to the first embodiment. It is a reduction front view of the compressor of Example 1. FIG. 4 is a cross-sectional view of the compressor of Example 1 as seen from the direction of arrows IV-IV in FIG. 1. It is sectional drawing of the compressor of Example 2. FIG. 3 is an enlarged cross-sectional view of a main part of a compressor according to Embodiment 2. FIG. FIG. 6 is a reduced front view of the compressor according to the third embodiment.

  Embodiments 1 to 3 embodying the present invention will be described below with reference to the drawings. The compressors of Examples 1 to 3 are all mounted on a vehicle and constitute a refrigeration circuit of a vehicle air conditioner.

Example 1
As shown in FIG. 1, the compressor according to the first embodiment includes a first housing 1, a second housing 3, and a vane type compression mechanism C.

  The first housing 1 is disposed behind the compressor. The first housing 1 includes a first wall 1a extending in the vertical direction and a first outer peripheral wall 1b extending horizontally from the first wall 1a toward the front. A first opening 1c is formed at the front end of the first housing 1, that is, the front end of the first outer peripheral wall 1b. The front end of the first housing 1 corresponds to one end in the present invention.

  A first housing space 5 a that communicates with the first opening 1 c is formed inside the first housing 1. Accordingly, the first housing 1 has a cup shape extending from the rear toward the front. Further, the first housing 1 has a discharge port 1d. The discharge port 1d is formed above the first housing 1 and opens toward the outside of the compressor.

  As shown in FIG. 2, a female thread portion 7 is formed around the axis O on the front end side of the first outer peripheral wall 1b. This female screw portion 7 corresponds to the first screw portion in the present invention. Further, a portion of the first outer peripheral wall 1b that is in the vicinity of the first opening 1c, that is, the front end side of the first outer peripheral wall 1b with respect to the female screw portion 7 is a first facing surface 4a.

  As shown in FIG. 1, the second housing 3 is disposed in front of the compressor. The second housing 3 has a second wall 3a extending in the up-down direction and a second outer peripheral wall 3b extending horizontally from the second wall 3a toward the rear. A second opening 3c is formed at the rear end of the second housing 3, that is, the rear end of the second outer peripheral wall 3b. The rear end of the second housing 3 corresponds to the other end in the present invention.

  Inside the second housing 3, a second accommodation space 5b communicating with the second opening 3c is formed. Thus, the second housing 3 has a cup shape extending from the front toward the rear. In addition, the storage space 5 is formed by the first storage space 5a and the second storage space 5b.

  Further, the second housing 3 is formed with a suction port 3d and a boss 3e. The suction port 3d is formed above the second housing 3 and opens toward the outside of the compressor. The boss 3e is formed on the second wall 3a and protrudes forward from the second wall 3a. A shaft hole 3f communicating with the second accommodation space 5b is provided in the boss 3e.

  As shown in FIG. 2, a male thread 9 portion is formed around the axis O on the rear end side of the second outer peripheral wall 3b. The male screw 9 part can be screwed with the female screw part 7. The male screw portion 9 corresponds to the second screw portion in the present invention. In the second outer peripheral wall 3b, a second facing surface 4b is formed on the front end side of the male screw portion 9. In this 2nd outer peripheral wall 3b, it forms so that the 2nd opposing surface 4b may be larger diameter than all the locations of the 2nd outer peripheral wall 3b including the external thread part 9. FIG. An O-ring groove 3g is recessed in the second facing surface 4b. A rubber O-ring 11 is accommodated in the O-ring groove 3g. This O-ring 11 corresponds to the sealing material in the present invention.

  Here, in the 1st outer peripheral wall 1b, the 1st opposing surface 4a is formed in the front end side rather than the internal thread part 7, and in the 2nd outer peripheral wall 3b, the 2nd opposing surface 4b is the front end side rather than the external thread part 9. Is formed. Thereby, in this compressor, O-ring 11 is located in the outer region rather than internal thread part 7 and internal thread part 9. In addition, when the female screw portion 7 and the female screw portion 9 are screwed together, the first facing surface 4 a and the second facing surface 4 b face each other via the O-ring 11.

  As shown in FIG. 3, in this compressor, when the female screw portion 7 and the male screw portion 9 are screwed together, the female screw portion 7 is arranged so that the relative angle between the suction port 3 d and the discharge port 1 d becomes a predetermined angle. The starting position has been adjusted. Details of the relative angle between the suction port 3d and the discharge port 1d will be described later. In FIG. 3, a part of the shape of the second housing 3 and the like is illustrated in a simplified manner. The same applies to FIG. 7 described later.

  As shown in FIG. 1, the vane compression mechanism C is disposed in the accommodation space 5. The vane type compression mechanism C includes a cylinder block 13, a front side plate 15, a rear side plate 17, a rotating shaft 19, a rotor 21, and five vanes 23 shown in FIG.

  The cylinder block 13 is provided in the accommodation space 5. The cylinder block 13 is formed with an elliptical cylinder chamber 13a in a direction perpendicular to the axis. The cylinder block 13 is formed with two suction spaces 13b and a plurality of suction ports 13c. The suction space 13b and the suction port 13c communicate with each other.

  Further, two concave portions 13 d are formed on the outer peripheral surface of the cylinder block 13. These recesses 13d form two discharge spaces 13e between the cylinder block 13 and the storage space 5. The cylinder block 13 is provided with a plurality of discharge ports 13f communicating with the discharge space 13e.

  In each discharge space 13e, a plurality of discharge valves 25 for closing each discharge port 13f and a plurality of retainers 27 for regulating the lift amount of each discharge valve 25 are provided.

  As shown in FIG. 1, the front side plate 15 is provided in the accommodation space 5, more specifically in the second accommodation space 5 b, and is located in front of the cylinder block 13. The front side plate 15 closes the front end of the cylinder chamber 13a. Thus, by providing the front side plate 15 in the second storage space 5b, the suction chamber 29 is formed in the second storage space 5b. The suction chamber 29 communicates with the suction port 3d.

  Further, the front side plate 15 is provided with a shaft hole 15a and two suction holes 15b. A sliding bearing 31a is provided in the shaft hole 15a. Each suction hole 15b communicates with the suction chamber 29 and each suction space 13b. Thereby, each suction space 13 b communicates with the suction chamber 29. In FIG. 1, only one suction hole 15b is shown.

  Further, a shaft seal device 33 is provided in front of the front side plate 15. The shaft seal device 33 is also located in the second accommodation space 5b. Further, an O-ring 35a is provided between the outer peripheral surface of the front side plate 15 and the inner peripheral surface of the second outer peripheral wall 3b.

  The rear side plate 17 is provided in the storage space 5, more specifically, in the first storage space 5 a, and is located behind the cylinder block 13. The rear side plate 17 closes the rear end of the cylinder chamber 13a. Thus, by providing the rear side plate 17 in the first housing space 5a, the discharge chamber 37 is formed in the first housing space 5a. The discharge chamber 37 communicates with the discharge port 1d.

  A separator 39 is formed in the center of the rear end surface of the rear side plate 17 and bulges rearward with a certain thickness. The separator 39 is located in the discharge chamber 37. A communication hole 41 is formed below the separator 39. In the separator 39, a cylindrical guide surface 39a for circulating a refrigerant gas discharged from a compression chamber 47 described later is formed. The guide surface 39a communicates with an oil separation chamber 39b that extends vertically in a cylindrical shape. The oil separation chamber 39 b communicates with the discharge chamber 37 through the communication hole 41. Inside the guide surface 39a, a cylindrical separation cylinder 43 that presses the refrigerant gas around its own outer peripheral surface and guides the refrigerant gas from which the lubricating oil has been separated into the inside of the guide surface 39a is press-fitted. The separation cylinder 43 is formed coaxially with the guide surface 39a. An opening 43 a that opens toward the discharge chamber 37 is formed at the upper end of the separation cylinder 43.

  Further, the rear side plate 17 is formed with a discharge hole 17a and a shaft hole 17b, as well as a back pressure channel (not shown). The discharge hole 17a communicates with the discharge space 13e and the separator 39. A sliding bearing 31b is provided in the shaft hole 17b. The back pressure channel communicates with the discharge chamber 37. An O-ring 35b is provided between the outer peripheral surface of the rear side plate 17 and the inner peripheral surface of the first outer peripheral wall 1b.

  The rotary shaft 19 is inserted into the shaft holes 3f, 15a, and 17b from the front to the rear of the compressor. The rotary shaft 19 is pivotally supported by the shaft seal device 33 in the second accommodation space 5b, and is pivotally supported by the slide bearings 31a and 31b in the shaft holes 15a and 17b, respectively. Thereby, the rotating shaft 19 can rotate around the axis O.

  Further, the front end side of the rotating shaft 19 is exposed to the outside of the compressor from the boss 3e. Thereby, an electromagnetic clutch or pulley (not shown) can be fixed to the front end of the rotating shaft 19. A driving force is transmitted to the electromagnetic clutch and pulley by a vehicle engine or motor.

  The rotor 21 is press-fitted into the rotary shaft 19 and is disposed in the cylinder chamber 13a. As a result, the rotor 21 can rotate synchronously with the rotary shaft 19 in the cylinder chamber 13a.

  As shown in FIG. 4, the rotor 21 is formed in a cylindrical shape having a circular cross section. Further, five vane grooves 21 a are recessed in the outer peripheral surface of the rotor 21. The vane grooves 21 a are spaced at equal angles around the axis O of the drive shaft 19. A vane 23 is stored in each vane groove 21a. The number and size of the vane grooves 21a and the vanes 23 can be set as appropriate.

  A back pressure chamber 45 is formed between the bottom surface of each vane 23 accommodated in each vane groove 21a and the bottom surface of each vane groove 21a. Each back pressure chamber 45 is in communication with a back pressure channel. That is, the back pressure chambers 45 and the discharge chambers 37 communicate with each other through the back pressure channel. Thereby, the lubricating oil can be supplied to each back pressure chamber 45 together with the high-pressure refrigerant gas. Each vane 23 can be moved in and out with respect to each vane groove 21 a by a pressure change in each back pressure chamber 45.

  Five compression chambers 47 are formed by the cylinder chamber 13 a whose front and rear are closed by the front side plate 15 and the rear side plate 17, the five vanes 23, and the outer peripheral surface of the rotor 21. Among the compression chambers 47, the compression chambers 47 in the suction stroke communicate with the suction port 13c. On the other hand, the compression chamber 47 in the discharge stroke communicates with the discharge port 13f.

  The discharge port 1d shown in FIG. 1 is connected to the condenser by piping. The condenser is connected to the expansion valve by piping. Furthermore, the expansion valve is connected to the evaporator by piping. The evaporator is connected to the suction port 3d by piping. A refrigeration circuit of a vehicle air conditioner is configured by connecting a compressor, a condenser, an expansion valve, and an evaporator by each pipe. In addition, illustration is abbreviate | omitted for each piping, a condenser, an expansion valve, and an evaporator.

  In the compressor configured as described above, when the rotary shaft 19 is rotated by an engine or the like, the rotor 21 rotates synchronously with the drive shaft 9. For this reason, a volume change occurs in each compression chamber 47. The low-pressure refrigerant gas that has passed through the evaporator is sucked into the suction chamber 29 from the suction port 3d. The refrigerant gas in the suction chamber 29 is sucked into the compression chamber 47 in the suction stroke through the suction holes 15b, the suction spaces 13b, and the suction ports 13c and compressed. The refrigerant gas compressed in the compression chamber 47 and having a high pressure is discharged into each discharge space 13e through the discharge port 13f. The refrigerant gas discharged into each discharge space 13e reaches between the outer peripheral surface of the separation cylinder 43 of the separator 39 and the guide surface 39a through the discharge hole 17a. Then, in the separator 39, the lubricating oil is centrifuged from the refrigerant gas. The refrigerant gas from which the lubricating oil has been separated flows into the discharge chamber 37 from the opening 43 a of the separation cylinder 43. On the other hand, the lubricating oil separated from the refrigerant gas is stored below the discharge chamber 37 through the communication hole 41 from the oil separation chamber 39b. The refrigerant gas in the discharge chamber 37 is discharged from the discharge port 1d toward the condenser, and a part of the refrigerant gas is supplied into each back pressure chamber 45 together with the lubricating oil.

  In this compressor, the female screw portion 7 formed on the first outer peripheral wall 1 b of the first housing 1 and the second outer peripheral wall 3 b of the second housing 3 in a state where the vane type compression mechanism C is accommodated in the accommodating space 5. The first housing 1 and the second housing 3 can be fixed by screwing the male screw portion 9 formed in the above. Then, all of the female screw portion 7 and all of the male screw portion 9 are screwed together, and the first facing surface 4a and the second facing surface 4b face each other via the O-ring 11, and the first housing 1 and the second housing 3 As a result, the rear side plate 17 is fixed to the storage space 5, more specifically, to the first storage space 5a. Similarly, the front side plate 15 is fixed to the second accommodation space 5b. As a result, the cylinder block 13 is fixed in the accommodation space 5. Thus, in this compressor, the first housing 1, the second housing 3, and the vane compression mechanism C can be assembled, and the vane compression mechanism C can be fixed in the accommodation space 5. .

  Thus, in this compressor, the first housing 1, the second housing 3, and the vane compression mechanism C can be easily fixed.

  Moreover, in this compressor, when fixing the 1st housing 1 and the 2nd housing 3, members, such as a volt | bolt, are unnecessary. For this reason, this compressor achieves a reduction in the number of parts.

  Further, in this compressor, as shown in FIG. 2, an O-ring 11 is provided on the second facing surface 4b of the second outer peripheral wall 3b. Thus, the O-ring 11 is compressed by the first facing surface 4a and the second facing surface 4b that are close to each other when the female screw portion 7 and the male screw portion 9 are screwed together.

  For this reason, in this compressor, if the 1st housing 1, the 2nd housing 3, and the vane type compression mechanism C are fixed, the inside of the compressor with respect to the exterior of a compressor will be carried out by the O-ring 11 without performing a separate operation | work. It is possible to suitably ensure the airtightness.

  Further, in this compressor, when the O-ring 11 is provided on the second facing surface 4b of the second outer peripheral wall 3b, for example, the O-ring 11 is provided on the second outer peripheral wall 3b on the rear end side of the male screw portion 9. In comparison with the second housing 3, the O-ring 11 can be easily provided.

  In this compressor, the O-ring 11 is located between the first housing 1 and the second housing 3 and outside the female screw portion 7 and the male screw portion 9, and the inside of the compressor with respect to the outside of the compressor. It is possible to ensure the airtightness of the.

  Therefore, according to the compressor of the first embodiment, the assembling work can be simplified and the manufacturing cost can be reduced.

  In particular, in this compressor, when the female screw portion 7 and the male screw portion 9 are screwed together, the O-ring 11 is formed in the radial direction of the second housing 3 by the first opposing surface 4a and the second opposing surface 4b that are close to each other. Compressed. For this reason, in this compressor, the screwing between the female screw portion 7 and the male screw portion 9 is loosened due to vibration during operation, etc., and the first housing 1 and the second housing 3 are loosened in the axial direction. Even in such a case, the O-ring 11 compressed in the radial direction of the second housing 3 can favorably maintain the airtightness inside the compressor with respect to the outside of the compressor.

  In this compressor, a discharge port 1 d is formed in the first housing 1, and a suction port 3 d is formed in the second housing 3. And in this compressor, the 1st housing 1 and the 2nd housing 3 are each the position shown in FIG. 3 by screwing the internal thread part 7 and the external thread part 9 by adjusting the starting position of the internal thread part 7. FIG. It is fixed with. That is, the second housing 3 is fixed at a position where the center of the suction port 3d is located on a vertical line VL that passes through the axis O of the rotary shaft 19 and extends vertically in the vertical direction of the compressor. In other words, the second housing 3 passes through the axis O of the rotating shaft 19, is orthogonal to the horizontal line HL extending horizontally in the left-right direction of the compressor, and is above the axis O of the rotating shaft 19. The suction port 3d is fixed at the place where the center is arranged. On the other hand, the first housing 1 is fixed at a location where the center of the discharge port 1d is inclined by θ1 degree leftward from the vertical line VL.

  As described above, in this compressor, by adjusting the starting position of the female screw portion 7, the angle at which the first housing 1 and the second housing 3 are fixed to each other, that is, the relative relationship between the suction port 3d and the discharge port 1d. It is possible to determine the angle. That is, in this compressor, the relative angle between the suction port 3d and the discharge port 1d can be determined only by screwing the female screw portion 7 and the male screw portion 9 together.

  For these reasons, in this compressor, if the female screw portion 7 and the male screw portion 9 are screwed together and the first housing 1 and the second housing 3 are fixed, the suction port 3d and the discharge port are not required to be separately operated. It is possible to determine the relative angle with 1d.

  Further, in this compressor, the relative position between the suction port 3d and the discharge port 1d can be changed easily and at low cost by adjusting the start position of the female screw portion 7 in accordance with the vehicle to be mounted. Therefore, the degree of freedom in design is high. Thereby, in this compressor, the mounting property to a vehicle is high.

(Example 2)
The compressor of the second embodiment includes a first housing 10 shown in FIG. 5 instead of the first housing 1 in the compressor of the first embodiment.

  The first housing 10 is disposed behind the compressor. The first housing 10 includes a first wall 10a extending in the vertical direction and a first outer peripheral wall 10b extending horizontally from the first wall 10a toward the front. A first opening 10c is formed at the front end of the first outer peripheral wall 10b. Here, this 1st outer peripheral wall 10b is formed so that an outer diameter may become large in two steps toward the front end side. For this reason, the first opening 10c is formed larger than the first opening 1c in the first embodiment.

  A first housing space 5 a that communicates with the first opening 10 c is formed inside the first housing 10. Thus, like the first housing 1 of the first embodiment, the first housing 10 also has a cup shape extending from the rear toward the front. Further, the first housing 10 is formed with a discharge port 10d that opens toward the outside of the compressor. This discharge port 10 d communicates with the discharge chamber 37.

  As shown in FIG. 6, a female screw portion 7 is formed on the front end side of the first outer peripheral wall 10b. In the first outer peripheral wall 10b, a first facing surface 4a is formed on the front end surface. And in this 1st outer peripheral wall 10b, the O-ring groove | channel 10e is recessedly provided with respect to the 1st opposing surface 4a. An O-ring 12 is accommodated in the O-ring groove 10e. The O-ring 12 also corresponds to the sealing material in the present invention.

  On the other hand, unlike the compressor of the first embodiment, the second facing surface 4 b is formed on the rear end side of the second wall 3 a of the second housing 3. More specifically, the second facing surface 4b is formed on the rear end side of the second wall portion 3a and at a position facing the front end surface of the first outer peripheral wall 1b. Further, in this compressor, the O-ring groove 3g is not provided in the second outer peripheral wall 3b, and the O-ring 11 is not provided in the second outer peripheral wall 3b.

  In this compressor, the first facing surface 4a is formed on the front end surface of the first outer peripheral wall 1b, so that the O-ring 12 is positioned outside the compressor, that is, outside the female screw portion 7 and the female screw portion 9. ing. In addition, when the female screw portion 7 and the female screw portion 9 are screwed together, the first facing surface 4 a and the second facing surface 4 b face each other via the O-ring 12. Other configurations of the compressor are the same as those of the compressor according to the first embodiment, and the same components are denoted by the same reference numerals and detailed description thereof is omitted.

  In this compressor, the first housing 10 and the second housing 3 are fixed by screwing the female screw portion 7 and the male screw portion 9 in a state where the vane compression mechanism C is accommodated in the accommodating space 5. It is possible. Thereby, like the compressor of Example 1, also in this compressor, it is possible to assemble the 1st housing 10, the 2nd housing 3, and the vane type compression mechanism C.

  In this compressor, the O-ring 12 is provided on the first facing surface 4a formed on the front end surface of the first outer peripheral wall 10b. For this reason, in this compressor, when the female screw portion 7 and the male screw portion 9 are screwed together, the O-ring 12 is axially moved by the first opposed surface 4a and the second opposed surface 4b that are close to each other. Will be compressed.

  For this reason, also in this compressor, if the 1st housing 1, the 2nd housing 3, and the vane type compression mechanism C are fixed, the compressor with respect to the exterior of a compressor is simultaneously carried out by the O-ring 12 without performing another operation | work. It is possible to suitably ensure the airtightness of the interior of the.

  In this compressor, the O-ring 12 can be easily provided to the first housing 1 by providing the O-ring 12 on the first facing surface 4a. Furthermore, also in this compressor, the O-ring 12 is outside the female screw portion 7 and the male screw portion 9, and it is possible to ensure the airtightness inside the compressor with respect to the outside of the compressor. Other functions of this compressor are the same as those of the compressor of the first embodiment.

(Example 3)
The compressor of the third embodiment has the same configuration as the compressor of the first embodiment, but the start position of the female screw portion 7 is set to a position different from the start position of the female screw portion 7 in the compressor of the first embodiment. ing.

  Thereby, in this compressor, when all the internal thread parts 7 and all the external thread parts 9 are screwed together, the 1st housing 1 and the 2nd housing 3 are fixed in the position shown in FIG. That is, the second housing 3 is fixed at a location where the center of the suction port 3d is inclined by θ2 degrees to the left from the vertical line VL. On the other hand, like the compressor of the first embodiment, the first housing 1 is fixed at a location where the center of the discharge port 1d is inclined by θ1 degree to the left from the vertical line VL. That is, in this compressor, the relative angle between the suction port 3a and the discharge port 1a is determined at a position different from that of the compressor of the first embodiment only by screwing the female screw portion 7 and the male screw portion 9 together. . The operation of this compressor is the same as that of the compressor of the first embodiment.

  In the above, the present invention has been described with reference to the first to third embodiments. However, the present invention is not limited to the first to third embodiments, and can be appropriately modified and applied without departing from the spirit of the present invention. Needless to say.

  For example, in the compressors of the first and third embodiments, the relative angle between the suction port 3d and the discharge port 1d is changed by changing the position of the center of the suction port 3d with respect to the vertical line VL. Instead, the relative angle between the suction port 3d and the discharge port 1d may be changed by changing the position of the center of the discharge port 1d with respect to the vertical line VL or the horizontal line HL.

  In addition, at the position where the center of the suction port 3d and the center of the discharge port 1d are inclined to the right side with respect to the vertical line VL, the start position of the female screw portion 7 so that the relative angle between the suction port 3d and the discharge port 1d can be determined. May be adjusted.

  Furthermore, instead of the female screw portion 7, the relative angle between the suction port 3d and the discharge port 1d may be determined by the start position of the male screw portion 9.

  Further, instead of the vane type compression mechanism C, a swash plate type compression mechanism or a scroll type compression mechanism may be adopted to constitute the compressor.

  The present invention is applicable to a vehicle air conditioner or the like.

DESCRIPTION OF SYMBOLS 1 ... 1st housing 1c ... 1st opening 1d ... Discharge port 3 ... 2nd housing 3c ... 2nd opening 3d ... Inlet 3e ... Boss 4a ... 1st opposing surface (opposing surface)
4b ... 2nd opposing surface (facing surface)
5 ... Accommodating space 7 ... Female thread (first thread)
9 ... Male thread (second thread)
DESCRIPTION OF SYMBOLS 10 ... 1st housing 10c ... 1st opening 10d ... Discharge port 11, 12 ... O-ring (sealing material)
DESCRIPTION OF SYMBOLS 13 ... Cylinder block 13a ... Cylinder chamber 15 ... Front side plate 17 ... Rear side plate 19 ... Rotating shaft 21 ... Rotor 21a ... Vane groove 23 ... Vane 29 ... Suction chamber 37 ... Discharge chamber 47 ... Compression chamber C ... Vane type compression mechanism

Claims (8)

A plurality of housing members that are fixed to each other while forming an accommodation space therein, and a compression mechanism having a compression chamber that changes the volume by rotation of the rotation shaft and compresses the refrigerant in the suction chamber and discharges the refrigerant into the discharge chamber. ,
The compression mechanism is housed and fixed in the housing space, thereby forming the suction chamber and the discharge chamber in the housing space,
Each of the housing members is a compressor in which a suction port that communicates the suction chamber and the outside, and a discharge port that communicates the discharge chamber and the outside,
At least two of the housing members are fixed by screwing the housing members together. The housing member has a cup shape having a first opening at one end, and a first housing having a first screw portion formed on the one end side;
A cup shape having a second opening at the other end is formed, a second screw portion that can be screwed with the first screw portion is formed at the other end side, and the first screw portion and the second screw portion are screwed together. A second housing capable of closing the first opening and the second opening by combining the first opening and the second opening;
2. The compressor according to claim 1, wherein the first housing or the second housing is formed with a boss that is sealed and exposed while rotatably supporting the rotating shaft.   The compressor according to claim 2, wherein the suction port is formed in one of the first housing and the second housing, and the discharge port is formed in the other of the first housing and the second housing.   The compressor according to claim 3, wherein a relative angle between the suction port and the discharge port is determined only by screwing the first screw portion and the second screw portion.   The opposing surfaces of the first housing and the second housing are positioned outside the first screw portion and the second screw portion, and the first screw portion and the second screw portion are screwed together. The compressor according to any one of claims 2 to 4, further comprising a sealing material that is compressed by the airtightly sealing the inside of the compressor.   The said sealing material is provided so that it may compress in the radial direction of a said 1st housing and a said 2nd housing by screwing together the said 1st screw part and the said 2nd screw part. Compressor.   The compressor according to any one of claims 1 to 6, wherein the compression mechanism is a vane type compression mechanism. The housing member has a cup shape having a first opening at one end, and a first housing having a first screw portion formed on the one end side;
A cup shape having a second opening at the other end is formed, a second screw portion that can be screwed with the first screw portion is formed at the other end side, and the first screw portion and the second screw portion are screwed together. A second housing capable of closing the first opening and the second opening by combining the first opening and the second opening;
The suction port is formed in the second housing, the discharge port is formed in the first housing;
The second housing is formed with a boss that is sealed and exposed while rotatably supporting the rotating shaft,
The compression mechanism includes a cylinder block that is fixed in the housing space and forms a cylinder chamber therein, a front side plate that closes a front end of the cylinder chamber and forms the suction chamber, and a rear end of the cylinder chamber And a rear side plate that forms the discharge chamber, a rotor that can be rotated in synchronization with the rotating shaft in the cylinder chamber, a plurality of vane grooves, and a vane groove that can be moved in and out. The compressor according to claim 7, further comprising: a plurality of vanes that are provided together with an inner surface of the cylinder chamber, an outer surface of the rotor, a rear surface of the front side plate, and a front surface of the rear side plate. .

Images