JP2009150376A - Gas compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the inner cylinder member of an oil separator from dropping from a main body member without adding any parts and processes, in a gas compressor. <P>SOLUTION: A cyclone block 70 is provided with the main body member 71 having a substantially cylindrical space 71d and a substantially cylindrical inner cylinder member 72 inserted from an opening 71e in the main body member 71 in a direction (M) along a direction of a substantially cylindrical shaft C1. In a state that the main body member 71 is assembled to a compressor main body 60 by a fastening member 78, a through-hole 71f for arranging the fastening member 78 through the main body member 71 is formed so that a head part 78a of the fastening member 78 is positioned on a virtual trajectory line 72d of an end edge part 72c at an opening 71e side of the main body member 71 in the inner cylinder member 72 in a direction that the inner cylinder member 72 escapes out through the opening 71e of the main body member 71 (in a direction of an arrow N (an opposite direction of an arrow M)) and near the end edge part 72c. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a gas compressor, and more particularly to an improvement in an oil separator that centrifuges oil from compressed gas discharged from a compressor body.

  Conventionally, a gas compressor (compressor) for compressing a gas such as a refrigerant gas and circulating the gas through the air conditioning system is used in an air conditioning system (hereinafter referred to as an air conditioning system).

  Here, a general compressor includes a compressor main body that compresses and discharges gas, and an oil separator that separates oil such as refrigeration oil from the compressed refrigerant gas discharged from the compressor main body. It has become.

  As the oil separator, for example, a main body member having a substantially cylindrical space whose one end is closed by an end wall portion, and substantially coaxial with the substantially cylindrical space of the main body member and provided inside the main body member Having a substantially cylindrical inner cylinder member, and centrifugally separating the refrigerating machine oil by allowing the refrigerant gas to pass through the space between the inner circumferential surface of the main body member and the outer circumferential surface of the inner cylinder member. Is known (Patent Document 1).

  Here, the inner cylinder member and the main body member are separate parts, and the whole oil separator is integrally configured by press-fitting the inner cylinder member into the main body member.

  However, if the above-mentioned press-fitting portion receives excessive kinetic energy that can be generated by the refrigerant gas flowing between the inner cylinder member and the main body member, the oil separation is caused when the inner cylinder member comes out of the main body member. There is a risk that the vessel will not function sufficiently.

  Therefore, a structure that prevents the inner cylinder member from falling off from the main body member is required. For example, a structure is proposed in which the inner cylinder member is fastened and fixed to the main body member with a bolt, and the inner cylinder member is prevented from coming out of the main body member. (Patent Document 2).

Also proposed is a structure in which a snap ring groove is formed on the inner peripheral surface of the main body member, and a snap ring is provided in the snap ring groove of the main body member with the inner cylindrical member arranged on the inner periphery. (Patent Document 3).
JP-A-4-153596 JP 2000-170681 A JP 2005-171859 A

  By the way, the fastening and fixing of the inner cylinder member and the main body member, the fixing by the snap ring, and the fixing by the caulking need to be performed by adding parts and processes, which causes an increase in manufacturing cost.

  The present invention has been made in view of the above circumstances, and provides a gas compressor capable of effectively preventing an inner cylindrical member of an oil separator from dropping from a main body member without adding parts and processes. The purpose is to do.

  The gas compressor according to the present invention positions the baffle member on the virtual trajectory line of the inner cylinder member in the direction in which the inner cylinder member comes out from the main body member, so that the inner cylinder member does not have to be added without adding parts or processes. Is displaced along the virtual trajectory line (meaning a trajectory formed by passing through the edge of the inner cylinder member when the inner cylinder member is displaced). However, the contact with the baffle member restricts the displacement of the inner cylinder member.

  That is, the gas compressor according to the present invention includes a compressor main body and an oil separator that is assembled to the compressor main body and separates oil from the compressed gas discharged from the compressor main body. The container is inserted along the axial direction of the substantially cylindrical column from the opening of the main body member of the main body member having a substantially cylindrical space and the substantially cylindrical space, and is disposed in the substantially cylindrical space. A substantially cylindrical inner cylinder member, and when the main body member is assembled to the compressor main body, it is assumed that the inner cylinder member is displaced in a direction of coming out of the main body member. A baffle member for preventing the inner cylinder member from dropping from the main body member is provided on a virtual trajectory line of the opening-side edge of the cylinder member.

  According to the gas compressor according to the present invention configured as described above, when the main body member is assembled to the main body of the compressor, the main body of the inner cylindrical member can be displaced even if the inner cylindrical member is displaced in the direction of coming out of the main body member. Since the edge of the inner cylinder member abuts against the baffle member located on the virtual trajectory line of the edge on the opening side of the member to restrict the displacement of the inner cylinder member (prevent falling off), the inner cylinder member is separated from the main body member. It can be prevented from coming out or falling off.

  Here, the baffle member may be in any form as long as it does not increase the number of parts. For example, the baffle member is formed on the head of the fastening member for assembling the oil separator to the main body member or the compressor main body. It is also possible to apply a projected portion or the like. Thereby, an increase in manufacturing cost is not caused.

  Therefore, the gas compressor according to the present invention can prevent the inner cylinder member of the oil separator from dropping from the main body member without adding parts or processes.

  Further, the gas compressor according to the present invention has a fastening member head that fastens and fixes the main body member to the compressor main body on a virtual trajectory line of the inner cylindrical member in a direction in which the inner cylindrical member is pulled out from the main body member. By positioning, the inner cylinder member has its virtual trajectory line (the locus formed by passing through the edge of the inner cylinder member when it is assumed that the inner cylinder member is displaced, without adding parts or processes) The edge of the inner cylinder member abuts against the head of the fastening member to restrict the displacement of the inner cylinder member.

  That is, the gas compressor according to the present invention includes a compressor body, and an oil separator that is assembled to the compressor body by a fastening member and separates oil from the compressed gas discharged from the compressor body. The oil separator is inserted along an axial direction of the substantially cylindrical body from an opening in the main body member of the main body member having a substantially cylindrical space and the substantially cylindrical space, and the substantially cylindrical space. The opening in the inner cylinder member in a direction in which the inner cylinder member is pulled out through the opening in a state where the main body member is assembled to the compressor main body. A through-hole through which the fastening member is passed is formed in the main body member so that the head of the fastening member is positioned on a virtual trajectory line of the side edge.

  According to the gas compressor according to the present invention configured as described above, even when the main body member is assembled to the main body of the compressor, the inner cylinder member may be displaced in the direction of coming out of the main body member through the opening. The end of the inner cylinder member is positioned on the head of the fastening member passed through the through hole of the main body member, which is positioned on the virtual locus line of the end edge on the opening side of the main body member and fastens and fixes the main body member to the compressor main body. Since the edge abuts and the displacement of the inner cylinder member is restricted, it is possible to prevent the inner cylinder member from coming out of the main body member or falling off.

  Here, the fastening member against which the inner cylinder member is abutted is an existing member for fastening and fixing the main body member of the oil separator to the compressor main body. Since the position of the through hole of the main body member that passes through (and the position of the screw hole in the compressor body) is moved from the conventional position, there is no need to add new processing or assembly processes. There is no cost increase.

  Therefore, the gas compressor according to the present invention can prevent the inner cylinder member of the oil separator from dropping from the main body member without adding parts and processes.

  In the gas compressor according to the present invention, the main body member has an assembly wall portion assembled to the compressor main body, substantially parallel to the axial direction of the substantially cylindrical body, and the through hole is formed of the assembly. It is preferable that it is formed along the thickness direction of the attachment wall.

  Since the assembly wall portion of the main body member extends in a plane substantially parallel to the axis of the column in the substantially cylindrical space of the main body member, the thickness direction of the assembly wall portion is The fastening member that is perpendicular to the axis and is passed through the through hole formed along the thickness direction of the assembly wall portion is fastened along the direction perpendicular to the axis of the cylinder.

  On the other hand, the direction in which the inner cylinder member is about to come out of the main body member is the direction along the axial direction of the column, so the inner cylinder member that is about to come out of the main body member hits the head of the fastening member and is fastened. The direction in which the head of the member is pressed is not the direction in which the fastening member is pulled out (the axial direction (longitudinal direction) of the fastening member), but the direction orthogonal to the axial direction of the fastening member.

  Therefore, even if the inner cylinder member that is about to come out of the main body member hits the head of the fastening member, the load does not act on the fastening member in the pulling direction. Can be effectively prevented.

  The gas compressor according to the present invention includes a compressor main body, and an oil separator that is assembled to the compressor main body and separates oil from the compressed gas discharged from the compressor main body. The container is inserted along the axial direction of the substantially cylindrical column from the opening of the main body member of the main body member having a substantially cylindrical space and the substantially cylindrical space, and is disposed in the substantially cylindrical space. A substantially cylindrical inner cylinder member, and when the main body member is assembled to the compressor main body, it is assumed that the inner cylinder member is displaced in a direction of coming out of the main body member. A baffle member that prevents the inner cylinder member from dropping from the main body member is provided on a virtual trajectory line of the opening-side edge of the cylinder member, and a protrusion that is positioned as the baffle member on the compressor body Characteristic that is formed To.

  According to the gas compressor according to the present invention configured as described above, when the main body member is assembled to the main body of the compressor, the main body of the inner cylindrical member can be displaced even if the inner cylindrical member is displaced in the direction of coming out of the main body member. An inner cylinder member for restricting the displacement of the inner cylinder member (preventing dropping) by causing the end edge of the inner cylinder member to abut against the projecting member of the compressor main body located on the virtual locus line of the edge on the opening side of the member. Can be prevented from coming out of the main body member or falling off.

  Here, since the protrusion formed on the compressor main body against which the inner cylinder member is abutted may be formed in advance at the stage of forming the contour shape of the compressor main body, there is a running cost for adding parts. It does not occur, no new processing steps or assembly steps are added, and the manufacturing cost does not increase.

  Therefore, the gas compressor according to the present invention can prevent the inner cylinder member of the oil separator from dropping from the main body member without adding parts and processes.

  In the gas compressor according to the present invention, the main body member has an assembly wall portion assembled to the compressor main body, substantially parallel to the axial direction of the substantially circular cylinder, and is formed on the compressor main body. It is preferable that the protrusion is formed along the thickness direction of the assembly wall.

  Since the assembly wall portion of the main body member extends in a plane substantially parallel to the axis of the column in the substantially cylindrical space of the main body member, the thickness direction of the assembly wall portion is The projections of the compressor body formed in the direction perpendicular to the axis and along the thickness direction of the assembly wall are provided in a state along the direction perpendicular to the axis of the cylinder.

  On the other hand, the direction in which the inner cylinder member tries to come out of the main body member is the direction along the axial direction of the cylinder, so the inner cylinder member that tries to come out from the main body member hits the protrusion of the compressor main body. Since the direction in which the protrusion is pressed is the direction in which the protrusion is sheared, the inner cylinder member will not come out unless the protrusion is destroyed.

  Moreover, in each gas compressor which concerns on this invention mentioned above, it is preferable that one part among the said inner cylinder members is press-fitted in the said substantially cylindrical space of the said main body member.

  The fastening member as the baffle member needs to be displaced in the axial direction when fastened to the compressor body. For this reason, the fastening member is displaced between the head of the fastening member and the inner cylinder member. Accordingly, it is preferable to secure at least a slight gap so as not to cause sliding scratches or deformations in the inner cylinder member.

  Also, when assembling the oil separator to the compressor body, it is necessary to displace the oil separator toward the compressor body, but if the protrusion is formed on the compressor body as a baffle, It is preferable to secure at least a slight gap between the portion and the inner cylinder member.

  In this preferred embodiment, when the inner cylinder member is displaced with respect to the main body member, the baffle member such as the head of the fastening member or the protrusion of the compressor main body and the inner cylinder member abut against each other to generate noise.

  Therefore, it is preferable that the mechanical displacement restriction by the baffle member such as the fastening member and the protrusion described above is an auxiliary restriction, and the main restriction is the inner cylinder member and the main body member as in the conventional gas compressor. Is preferably fixed by press-fitting.

  According to the gas compressor concerning the present invention, it is possible to prevent the inner cylindrical member of the oil separator from dropping from the main body member without adding parts and processes.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, the best embodiment of the gas compressor of the invention will be described with reference to the drawings.

  FIG. 1 is a longitudinal sectional view showing a vane rotary compressor 100 which is an embodiment of a gas compressor according to the present invention, and FIG. 2A is a single cyclone block 70 (oil separator) according to an arrow A in FIG. FIG. 2B is a view showing a cross section taken along line BB shown in FIG.

  The illustrated compressor 100 is configured, for example, as a part of an air conditioning system (hereinafter simply referred to as an air conditioning system) that performs cooling using the heat of vaporization of a cooling medium, and condensing that is another component of the air conditioning system. Along with a condenser, an expansion valve, an evaporator, and the like (all not shown), they are provided on a cooling medium circulation path.

  The compressor 100 compresses the refrigerant gas G (gas) as a gaseous cooling medium taken from the evaporator of the air conditioning system, and supplies the compressed refrigerant gas G to the condenser of the air conditioning system. The condenser liquefies the compressed refrigerant gas G and sends it to the expansion valve as a high-pressure liquid refrigerant.

  The high-pressure liquid refrigerant is reduced in pressure by the expansion valve and sent to the evaporator. The low-pressure liquid refrigerant absorbs heat from ambient air and vaporizes in the evaporator, and cools the air around the evaporator by heat exchange with the heat of vaporization.

  The compressor 100 is housed in the housing 10 including the case 11 and the front head 12, and includes a compressor body 60 that compresses the refrigerant gas G (gas, compressed gas) by rotating the rotating shaft 51, and a compression. A cyclone block 70 (oil separator) that separates the refrigerating machine oil R (oil component) from the high-pressure refrigerant gas G discharged from the compressor main body 60 and the rotary shaft 51 of the compressor main body 60 are assembled to the main body 60 of the compressor. It is the structure provided with the driving force connection / disconnection part 80 which connects / disconnects the rotational driving force which should be transmitted.

  The compressor main body 60 accommodated in the housing 10 includes a rotating shaft 51 that is driven to rotate about an axis, a columnar rotor 50 that rotates integrally with the rotating shaft 51, and an outer peripheral surface of the rotor 50. Is embedded in the outer periphery of the rotor 40 and the outer periphery of the rotor 50 so that the outer end of the cylinder 40 can protrude outwardly. The amount of protrusion is variable so as to follow the contour shape of the inner peripheral surface 49, five plate-like vanes 58 embedded in the rotor 50 at equal angular intervals around the rotation shaft 51, and both open end surfaces of the cylinder 40 The front side block 30 and the rear side block 20 are fixed so as to cover the open end surface from the outside.

  The volume of each compression chamber 48 defined by the two side blocks 20, 30, the rotor 50, the cylinder 40, and the two vanes 58, 58 that precede and follow the rotation direction of the rotation shaft 51 is By repeating the increase / decrease according to the rotation, the refrigerant gas G sucked into each compression chamber 48 is compressed and discharged.

  One of the portions of the rotary shaft 51 protruding from both end surfaces of the rotor 50 is pivotally supported by the bearing portion 32 of the front side block 30 and extends outward through the front head 12. ing.

  Similarly, the other side of the protruding portion of the rotating shaft 51 is pivotally supported by the bearing portion 22 of the rear side block 20.

  The case 11 has a cylindrical body whose one end is closed, and the front head 12 is assembled so as to cover an open part on the other end side of the case 11 to form an accommodation space inside the housing 10. is doing.

  The driving force connecting / disconnecting portion 80 is disposed in a pulley 82 that is rotatably supported outside the boss of the front head 12 via a radial ball bearing 14, and in an annular space formed inside the pulley 82. 12 and an armature 83 fixed to the rotary shaft 51 and abutting against the side wall 82a of the pulley 82 by the magnetic force generated by energizing the electromagnetic coil 81 and rotating integrally with the pulley 82. ing.

  The front head 12 is formed with a suction port 12a through which a low-pressure refrigerant gas G is sucked from the evaporator. A check valve 12b for preventing the refrigerant gas G from flowing backward is provided in the suction port 12a. Yes.

  The suction port 12a communicates with a suction chamber 34 formed between the front side block 30 and the front head 12 of the compressor body 60 accommodated in the housing 10, and the refrigerant gas G 34 is sucked into the compression chamber 48 of the compressor main body 60 through the suction hole 31.

  On the other hand, the case 11 is formed with a discharge port 11a for discharging the high-pressure refrigerant gas G compressed by the compressor body 60 to the condenser.

  The discharge port 11a communicates with a discharge chamber 21 formed between the rear side block 20 of the compressor main body 60 and the case 11 accommodated in the housing 10, and the refrigerant gas G is supplied to the compressor main body 60. Is discharged into the discharge chamber 21 through the cyclone block 70.

  As shown in FIG. 2, the cyclone block 70 includes a main body member 71 having a substantially cylindrical space 71 d and an opening 71 e in the main body member 71 of the substantially cylindrical space 71 d along the direction of the substantially cylindrical axis C <b> 1. In the state where the main body member 71 is assembled to the compressor main body 60 with the fastening member 78, the inner cylindrical member 72 is inserted in the direction of the arrow M and disposed in the substantially cylindrical space 71d. The edge portion on the opening 71e side of the main body member 71 in the inner cylindrical member 72 in the direction in which the inner cylindrical member 72 is pulled out through the opening 71e of the main body member 71 (direction of arrow N (opposite direction to the direction of arrow M)). A through hole 71f through which the fastening member 78 is passed is formed in the main body member 71 so that the head portion 78a of the fastening member 78 is positioned on the virtual locus line 72d of 72c and in the vicinity of the edge portion 72c. .

  Specifically, the inner cylinder member 72 is a thick cylinder part having a diameter larger than that of the thin cylinder part 72a in addition to the thin cylinder part 72a that forms a cylindrical space for separating the refrigerating machine oil R from the refrigerant gas G by a centrifugal separation action. 72b is formed continuously, and the thick cylindrical portion 72b is press-fitted into an opening 71e which is a part of a substantially columnar space 71d of the main body member 71. By this press-fitting, the inner cylindrical member 72 is It is firmly fixed to the member 71.

  In addition to the virtual locus line 72d of the end edge portion 72c of the inner cylinder member 72 described above, two further through holes 71f are formed in the main body member 71, and a total of three through holes 71f are formed in total. . Note that these three through holes 71f are arranged so that the triangles are approximately close to regular triangles when viewed as triangles having the three through holes 71f as vertices. The moment acting on the fastening member 78 fastened to the compressor main body 60 through 71f is distributed in a substantially balanced manner in the three fastening members 78 in a balanced manner, and stress is prevented from concentrating only on any one of the fastening members 78. be able to.

  The cyclone block 70 is fastened and fixed to the outer surface 29b of the rear side block 20 of the compressor main body 60 by a fastening member 78 such as a bolt. The main body member 71 of the cyclone block 70 is substantially in the direction of the substantially cylindrical axis C1. It has an assembly wall portion 71g that extends in parallel and is assembled to the compressor body 60, and the three through holes 71f are formed along the thickness direction of the assembly wall portion 71g.

  As a result, the fastening member passed through the through hole 71f is fixed by being screwed in the direction of the arrow P, which is a substantially horizontal direction as shown in FIG. 2B.

  The cyclone block 70 configured as described above has the inner cylinder portion 72 disposed in the substantially cylindrical space 71 d of the main body member 71, so that the inner peripheral surface of the main body member 71 and the inner cylindrical member 72 are arranged. The high-pressure refrigerant gas G discharged from the compression chamber 48 passes through the cylindrical space formed between the outer circumferential surface and the refrigerating machine oil R mixed in the refrigerant gas G is centrifuged. The refrigerating machine oil R dropped onto the bottom of the substantially cylindrical space 71d is discharged to the bottom of the discharge chamber 21 from the oil drain hole 71c formed in the bottom wall of the main body member 71, and In response to the high internal pressure, the oil is supplied into the compressor main body 60 as hydraulic oil for causing the vane 58 to protrude or as lubricating oil for the sliding portion.

  On the other hand, the refrigerant gas G from which the refrigerating machine oil R has been separated is reflected by the bottom wall, is discharged to the discharge chamber 21 through the inner space of the inner cylindrical portion 72, passes through the discharge port 11a, and passes through the discharge port 11a. Supplied externally.

  According to the compressor 100 according to the present embodiment configured as described above, the fixing force due to the press-fitting of the inner cylinder member 72 with respect to the main body member 71 is weakened by the pressure of the refrigerant gas G discharged from the cyclone block 70. Even when the fixing by the cylinder cannot be maintained, the inner cylinder member 72 comes out of the main body member 71 through the opening 71e of the main body member 71 in a state where the main body member 71 of the cyclone block 70 is assembled to the compressor main body 60. Even if it is going to be displaced in the direction (direction of arrow N), the main body member 71 is fastened and fixed to the compressor main body 60 located on the virtual locus line 72d of the edge 72c of the inner cylinder member 72 on the opening 71e side of the main body member 71. The end 72c of the inner cylinder member 72 projects into the head portion 78a of the fastening member 78 passed through the through hole 71f of the body member 71. For regulating the displacement of the inner cylinder member 72 hits, it is possible to inner cylindrical member 72 is mechanically prevented from falling or coming off largely from the body member 71.

  Here, since the fastening member 78 against which the inner cylinder member 72 is abutted is an existing member for fastening and fixing the main body member 71 of the cyclone block 70 to the compressor main body 60, the addition of parts such as the fastening member 78 is added. In addition, since the formation position of the through hole 71f of the main body member 71 through which the fastening member 78 is passed (and the formation position of the screwing hole in the compressor main body 60) is moved from the conventional formation position, There is no addition of new processing steps and assembly steps, and there is no increase in manufacturing costs.

  Therefore, the compressor 100 according to the present embodiment can effectively prevent the inner cylinder member 72 of the cyclone block 70 from dropping from the main body member 71 without adding parts and processes.

  Further, when the fastening member 78 is fastened to the compressor body 60, it is necessary to displace the fastening member 78 in the direction of the axial arrow P. For this reason, between the head portion 78 a of the fastening member 78 and the inner cylinder member 72. In order to prevent the inner cylinder member 72 from causing sliding scratches or deformations due to the displacement of the fastening member 78, it is preferable to secure at least a slight gap.

  For this reason, when the inner cylinder member 72 is displaced with respect to the main body member 71, the head part 78a of the fastening member 78 and the inner cylinder member 72 may abut against each other and generate abnormal noise.

  Therefore, in the compressor 100 according to the present embodiment, the mechanical displacement restriction by the fastening member 78 described above is an auxiliary restriction, and the main restriction is the inner cylinder member 72 and the main body member 72 as in the conventional gas compressor. It may be fixed by press-fitting.

  However, the gas compressor according to the present invention is not limited to the one that is mainly fixed by such press fitting.

  Since the assembly wall portion 71g of the main body member 71 extends in a plane substantially parallel to the column axis C1 of the substantially cylindrical space 71d of the main body member 71, the assembly wall portion 71g The thickness direction (the direction along the arrow P) is a direction substantially orthogonal to the axis C1 of the cylinder, and the fastening member is passed through the through hole 71f formed along the thickness direction of the assembly wall portion 71g. 78 will be fastened along the direction (along arrow P) substantially orthogonal to the axis C1 of the cylinder.

  On the other hand, the direction in which the inner cylinder member 72 tries to escape from the main body member 71 (the direction along the arrow N) is the direction along the direction of the axis C1 of the column, and therefore the inner cylinder that tries to escape from the main body member 71. The direction in which the member 72 abuts against the head portion 78a of the fastening member 78 and presses the head portion 78a of the fastening member 78 is not the direction in which the fastening member 78 is pulled out (the direction opposite to the direction of the arrow P). A direction (direction along arrow N) perpendicular to the axial direction (direction along arrow P).

  Therefore, even if the inner cylinder member 72 that is about to come out of the main body member 71 hits the head portion 78a of the fastening member 78, the load is not applied to the fastening member 78 in the pulling direction. The head portion 78a can effectively prevent the inner cylinder member 72 from being pulled out.

  As described above, the compressor 100 according to the present embodiment can effectively prevent the inner cylinder member 72 of the cyclone block 70 from dropping from the main body member 71.

  In the compressor 100 according to the above-described embodiment, the inner cylinder member 72 is assumed when the inner cylinder member 72 is displaced in the direction of the arrow N extending from the main body member 71 in a state where the main body member 71 is assembled to the compressor main body 60. A through hole 71f formed in the main body member 71 as a baffle member that prevents the inner cylindrical member 72 from falling off the main body member 71 on the virtual locus line 72d of the edge portion 72c on the opening 71e side of the main body member 71 in FIG. However, the gas compressor according to the present invention is not limited to this mode, and the inner cylinder member 72 is dropped from the main body member 71. As long as it is a baffle member that prevents the above, other modes can be adopted.

  For example, FIGS. 3 and 4 show a vane rotary type compressor 100 which is another embodiment of the gas compressor according to the present invention. The illustrated compressor 100 is the same as the compressor 100 of FIGS. 1 and 2 with respect to the basic configuration as a gas compressor, but a baffle member that prevents the inner cylinder member 72 from falling off the main body member 71 is illustrated in FIG. This is different from the one shown in FIG.

  That is, the illustrated compressor 100 includes a compressor body 60 and a cyclone block 70 that is assembled to the rear side block 20 of the compressor body 60 and separates the refrigerating machine oil R from the refrigerant gas G discharged from the compressor body 60. The cyclone block 70 is inserted along a substantially cylindrical axis C1 direction from a main body member 71 having a substantially cylindrical space 71d and an opening 71e in the main body member 71 of the substantially cylindrical space 71d. In the state where the main body member 71 is assembled to the compressor main body 60 (rear side block 20) with the fastening member 78, the inner cylindrical member 72 is disposed in the columnar space 71d. The opening of the main body member 71 in the inner cylinder member 72 when it is assumed that the main body member 71 is displaced so as to come out in the direction of arrow N (see FIG. 4B). On 1e imaginary trajectory line of the edge 72c of the side 72d, the inner cylindrical member 72 projecting portion 23 of the baffle member to prevent the falling off from the body member 71 is provided on the rear side block 20 (FIG. 3).

  The protrusion 23 is positioned on the virtual locus line 72d of the end edge 72c on the opening 71e side of the main body member 71 in the state where the cyclone block 70 is assembled to the compressor main body 60 and close to the end edge portion 72c. Is formed.

  The inner cylinder member 72 is press-fitted into the main body member 71 and is firmly fixed, which is the same as the compressor 100 of the embodiment shown in FIG.

  As shown in FIG. 4A, the cyclone block 70 is diagonally formed on the outer surface 29b of the rear side block 20 of the compressor main body 60 with a substantially cylindrical space 71d sandwiched by fastening members 78 such as bolts. The main body member 71 of the cyclone block 70 extends substantially parallel to the direction of the substantially cylindrical axis C1 and is assembled to the compressor main body 60 (an assembly wall portion). The through hole of the wall 71g is formed along the thickness direction of the assembly wall 71g.

  Further, the protrusion 23 formed on the rear side block 20 is formed so as to protrude in the thickness direction of the wall 71g.

  And since the wall part 71g which a main body member has has extended in the surface substantially parallel to the axis | shaft C1 of the said column of the substantially cylindrical space 71d of the main body member 71, the thickness direction of this wall part 71g is The protrusion 23 of the compressor body 60 that is formed in a direction perpendicular to the axis C1 of the cylinder and protrudes along the thickness direction of the wall 71g is in a state along the direction orthogonal to the axis C1 of the cylinder. Provided.

  On the other hand, the direction in which the inner cylinder member 72 tries to escape from the main body member 71 is a direction along the direction of the axis C1 of the cylinder (the direction of arrow N). The direction in which the projection 23 is pressed against the projection 23 of the machine body 60 is a direction in which the projection 23 is sheared.

  Therefore, the inner cylinder member 72 does not come out unless the protrusion 23 is destroyed, and the extraction of the inner cylinder member 72 can be completely prevented.

  Here, the protrusion 23 formed on the compressor main body 60 against which the inner cylinder member 72 is abutted may be formed in advance by a mold or the like at the stage of forming the contour shape of the compressor main body 60. There is no running cost to add, and no new processing steps or assembly steps are added, so that the manufacturing cost does not increase.

  Further, when the cyclone block 70 is assembled to the compressor main body 60, it is necessary to displace the cyclone block 70 toward the compressor main body 60 (rear side block 20), and the protrusion 23 and the edge 72 c of the inner cylinder member 72 It is preferable to secure at least a slight gap between them.

  And in this preferable aspect, when the inner cylinder member 72 is displaced with respect to the main body member 71, the protrusion 23 and the inner cylinder member 72 may abut against each other to generate abnormal noise.

  Therefore, in the compressor 100 according to the present embodiment, the mechanical displacement restriction by the protrusion 23 described above is an auxiliary restriction, and the main restriction is the inner cylinder member 72, the main body member 72, and the like as in the conventional gas compressor. It may be fixed by press-fitting.

  However, although press-fitting is applied as the main fixing in the above-described embodiment, the gas compressor according to the present invention is not limited to the one accompanied with the main fixing by such press-fitting.

  As described above, the compressor 100 according to the present embodiment can effectively prevent the inner cylinder member 72 of the cyclone block 70 from dropping from the main body member 71.

  In the compressor 100 shown in FIG. 3, as shown in FIG. 4A, the number of fastening members 78 in which the cyclone block 70 is assembled to the compressor body 60 (rear side block 20) is sufficient. Compared to the number (three) of the fastening members 78 in the compressor 100 shown in FIG. 1, the number of parts can be reduced, which is more preferable.

It is a longitudinal section showing a vane rotary type compressor which is one embodiment of a gas compressor concerning the present invention. (A) is a side view which shows the cyclone block 70 (oil separator) single-piece | unit by arrow A in FIG. 1, (b) is a figure which shows the cross section along the BB line shown to (a). It is a longitudinal cross-sectional view which shows the vane rotary type compressor which is other embodiment of the gas compressor which concerns on this invention. (A) is a side view which shows the cyclone block 70 (oil separator) single-piece | unit by arrow A in FIG. 3, (b) is a figure which shows the cross section along the BB line shown to (a).

Explanation of symbols

60 Compressor body 70 Cyclone block (oil separator)
71 body member 71d substantially columnar space 71e opening 71f through hole 72 inner cylinder member 78 fastening member 100 compressor (gas compressor)

Claims (5)

A compressor main body, and an oil separator that is assembled to the compressor main body and separates oil from the compressed gas discharged from the compressor main body,
The oil separator is inserted along an axial direction of the substantially cylindrical body from an opening in the main body member of the main body member having a substantially cylindrical space and the substantially cylindrical space, and the substantially cylindrical space. A substantially cylindrical inner cylinder member disposed in the
In a state where the main body member is assembled to the compressor main body, when it is assumed that the inner cylinder member is displaced in a direction of coming out of the main body member, on the virtual trajectory line of the opening side edge of the inner cylinder member The gas compressor is provided with a baffle member for preventing the inner cylinder member from falling off the main body member. A compressor body, and an oil separator that is assembled to the compressor body by a fastening member and separates oil from the compressed gas discharged from the compressor body;
The oil separator is inserted along an axial direction of the substantially cylindrical body from an opening in the main body member of the main body member having a substantially cylindrical space and the substantially cylindrical space, and the substantially cylindrical space. A substantially cylindrical inner cylinder member disposed in the
In a state where the main body member is assembled to the compressor main body, the head of the fastening member is on a virtual trajectory line of an edge of the inner cylinder member on the opening side in a direction in which the inner cylinder member is pulled out through the opening. A gas compressor, wherein a through hole through which the fastening member is passed is formed in the main body member so as to be positioned. The main body member has an assembly wall portion assembled to the compressor main body, substantially parallel to the axial direction of the substantially circular cylinder, and the through hole is formed along the thickness direction of the assembly wall portion. The gas compressor according to claim 2, wherein the gas compressor is provided.   The gas compressor according to claim 1, wherein a protrusion that is positioned as the baffle member is formed in the compressor main body. The gas compressor according to any one of claims 1 to 4, wherein a part of the inner cylindrical member is press-fitted into the substantially cylindrical space of the main body member.

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