Reciprocating compressor

Abstract

A reciprocating compressor is disclosed. The reciprocating compressor comprises a shell, a driving motor, a driving shaft, a piston, a cylinder block, a muffler assembly and a clamping member, wherein the clamping member can have a clamping elastic part that is elastically deformed and allows the muffler assembly to be pressed toward the cylinder block during fastening of the clamping member. Therefore, when a clamping fixing part is fastened to the front end surface of the cylinder block, the clamping elastic part is widened and extended and the clamping elastic part serves as a type of buffer, thereby enabling the muffler assembly, which is made of a plastic material, to be firmly fixed to the cylinder block while preventing deformation thereof.

Description

reciprocating compressor

[0001] The present invention relates to a reciprocating compressor.

[0002] Compressors can be categorized into several types, including rotary compressors, scroll compressors, and reciprocating compressors, depending on the compression method and type of refrigerant used. Reciprocating compressors compress the refrigerant through the reciprocating motion of a piston in a cylinder.

[0003] Reciprocating compressors can be categorized into vibrating and coupled types, depending on the piston actuation method. In an oscillating reciprocating compressor, the piston is connected to the actuator of a reciprocating motor and vibrates, reciprocating within a cylinder to compress the refrigerant. In a coupled reciprocating compressor, the piston is connected to the shaft of a rotary motor and reciprocates within a cylinder to compress the refrigerant.

[0004] In a vibrating reciprocating compressor, the suction side and the discharge side may be arranged on one side of the piston or on both sides, but in the case of a coupled reciprocating compressor, the suction side and the discharge side are mostly arranged on one side of the piston. The present invention relates to a coupled reciprocating compressor, and a reciprocating compressor may be defined as a coupled reciprocating compressor hereinafter.

[0005] A reciprocating compressor may have a suction muffler and a discharge muffler installed separately, or the suction muffler and discharge muffler may be installed as a single assembly. This embodiment focuses on an example in which the suction muffler and discharge muffler are formed as a single assembly, but the same can be applied to cases in which the suction muffler and discharge muffler are installed separately.

[0006] The patent document (Korean Patent Publication No. 10-2016-0055499) describes a reciprocating compressor having a muffler assembly in which a suction muffler and a discharge muffler are assembled into a single assembly. In this case, since the muffler assembly is made of plastic, a separate clamping member is used to bolt the assembly to the cylinder block to enhance its fastening reliability. The clamping member is formed of a rigid body, such as spring steel, with greater rigidity than the muffler assembly, thereby preventing the clamping member from being crushed during bolt fastening.

[0007] However, as previously described, since the clamping member is formed as a rigid body, the clamping member can be prevented from being crushed when bolted to the cylinder block, thereby firmly fastening the muffler assembly made of plastic material. However, due to processing errors and / or assembly errors, the clamping member may not be in close contact with the muffler assembly, thus failing to firmly fix the muffler assembly, or conversely, the clamping member may be in excessive contact with the muffler assembly, thereby causing deformation of the muffler assembly.

[0008] In addition, conventional clamping members can increase the fixing force for the muffler assembly by providing a separate elastic member between one side of the clamping member and one side of the muffler assembly facing it, but as described above, this may not only excessively pressurize the muffler assembly, but also increase the manufacturing cost due to the addition of a separate elastic member.

[0009] The purpose of the present invention is to provide a reciprocating compressor capable of firmly fixing a muffler assembly to a cylinder block while suppressing deformation of the muffler assembly.

[0010] Another object of the present invention is to provide a reciprocating compressor having a clamping member for fixing a muffler assembly to a cylinder block, wherein deformation of the muffler assembly is suppressed when the clamping member is fastened, while the muffler assembly can be firmly fixed to the cylinder block.

[0011] Another object of the present invention is to provide a reciprocating compressor in which the clamping member for fixing a muffler assembly to a cylinder block is elastically deformed when the clamping member is fastened, thereby suppressing deformation of the muffler assembly and allowing the muffler assembly to be more firmly fixed to the cylinder block.

[0012] Another object of the present invention is to provide a reciprocating compressor that can reduce manufacturing costs by minimizing the number of parts for fixing a muffler assembly to a cylinder block and reducing the number of parts and / or assembly work.

[0013] In order to achieve the object of the present invention, a reciprocating compressor including a shell, a drive motor, a drive shaft, a piston, a cylinder block, a muffler assembly, and a clamping member may be provided. The drive motor may be provided in an internal space of the shell. The drive shaft may be coupled to a rotor of the drive motor. The drive shaft may be coupled to the rotor to reciprocate. The cylinder block may have a cylinder into which the piston is reciprocally inserted to form a compression chamber together with the piston. The muffler assembly may be coupled to the cylinder block and communicate with the compression chamber. The clamping member may be provided with a clamping elastic portion that elastically deforms when the clamping member is fastened so that the muffler assembly is pressed toward the cylinder block. Through this, the muffler assembly can be firmly fixed to the cylinder block while suppressing deformation of the muffler assembly.

[0014] For example, the clamping member may include a clamping main body and a plurality of clamping fixing parts. The clamping main body supports the muffler assembly, and the clamping fixing parts may extend from the clamping main body and be fixed to the cylinder block. The clamping elastic part may be formed to be curved at the clamping fixing part. Accordingly, when the clamping fixing part is fastened to the front end surface of the cylinder block, the clamping elastic part spreads and stretches, thereby acting as a kind of buffer, thereby suppressing deformation of the muffler assembly made of a plastic material while firmly fixing it to the cylinder block.

[0015] For example, the clamping elastic member may be formed to be curved on the side of the muffler assembly. This can suppress an increase in the height of the clamping member including the clamping elastic member, thereby preventing the clamping member from colliding with the shell when the compressor body vibrates.

[0016] Specifically, the clamping fixing member may be bent and extended from the clamping body toward the cylinder block. The clamping elastic member may be formed to be bent between both ends of the clamping fixing member. Through this, an increase in the height of the clamping member including the clamping elastic member can be effectively suppressed.

[0017] As another example, the clamping elastic member may be formed to be curved on the front surface of the muffler assembly. This allows the clamping elastic member to be rigidly fixed while effectively suppressing deformation of the muffler assembly by increasing the curvature of the clamping elastic member without expanding the space for fastening the clamping fixing member.

[0018] For example, the clamping elastic member may be formed to be curved by being bent from the clamping body toward the shell and then toward the cylinder block. Through this, the curvature of the clamping elastic member can be secured relatively large, thereby increasing elasticity.

[0019] As another example, the muffler assembly may include an upper muffler and a lower muffler. The upper muffler may be formed as a single body with an upper suction muffler and an upper discharge muffler interposed therebetween. The lower muffler may include a lower suction muffler that is coupled with the upper suction muffler to form a suction space, and a lower discharge muffler that is coupled with the upper discharge muffler to form a discharge space. The clamping member may be coupled to the cylinder block by supporting the connecting muffler. Through this, even when the upper suction muffler and the upper discharge muffler are integrally connected on both sides of the connecting muffler, the connecting muffler can be firmly fixed to the cylinder block while suppressing deformation thereof.

[0020] For example, one side of the clamping member and one side of the connecting muffler facing it may be formed flat so as to be in surface contact with each other. This allows the clamping body to evenly apply pressure to the entire area of ​​the connecting muffler when the clamping member is fastened, thereby more effectively suppressing deformation of the connecting muffler and more firmly fixing it.

[0021] As another example, the clamping member may include a clamping main body and a plurality of clamping fixing parts. The clamping main body may support the muffler assembly, and the clamping fixing parts may extend from the clamping main body and be fixed to the cylinder block together with the muffler assembly. The clamping elastic part may be formed to be curved between both ends of the clamping fixing part. Through this, the height of the clamping member including the clamping elastic part may be effectively suppressed from increasing.

[0022] For example, the muffler assembly may include a muffler body and a cylinder cover. The muffler body may be provided with a suction space or a discharge space, and the cylinder cover may be fixed to the cylinder block by accommodating the muffler body. The clamping member may pressurize the cylinder cover so that the cylinder cover and the cylinder block are coupled together. Through this, the cylinder cover may be firmly fixed to the cylinder block while suppressing deformation of the cylinder cover.

[0023] Specifically, a clamping support surface supported by the clamping body may be formed on one side of the cylinder cover facing the clamping member. A plurality of clamping fixing surfaces may be formed around the clamping support surface, to which ends of the clamping fixing portions are in close contact and fastened to the cylinder block. The clamping fixing surface may be formed to be recessed toward the cylinder block more than the clamping support surface. Through this, the clamping fixing surface may be formed lower than the clamping support surface, so that a height difference may be formed between the clamping support surface and the clamping fixing surface.

[0024] More specifically, the clamping elastic member may be formed to be positioned between the clamping support surface and the clamping fixing surface of the cylinder cover. Accordingly, the clamping elastic member may be formed to be positioned on the side of the cylinder cover, thereby preventing the clamping member from colliding with the shell when the compressor body vibrates.

[0025] In addition, the clamping support surface and one side of the clamping body portion facing it can be formed flat so as to be in surface contact with each other. This allows the clamping body portion to evenly apply pressure to the entire area of ​​the cylinder cover when the clamping member is fastened, thereby more effectively suppressing deformation of the cylinder cover and more firmly fixing it.

[0026] As another example, the clamping fixing member may extend in both directions perpendicular to the longitudinal direction of the clamping body from both ends of the clamping body. Accordingly, the fixing force transmitted from the clamping fixing member to the clamping body may be evenly distributed, allowing the clamping body to uniformly support the cylinder block.

[0027] A reciprocating compressor according to the present embodiment includes a shell, a drive motor, a drive shaft, a piston, a cylinder block, a muffler assembly, and a clamping member, wherein the clamping member may be provided with a clamping elastic member that elastically deforms when the clamping member is fastened so that the muffler assembly is pressed toward the cylinder block. Accordingly, when the clamping fixing part is fastened to the front end surface of the cylinder block, the clamping elastic member spreads and expands, thereby acting as a kind of buffer, thereby suppressing deformation of the muffler assembly made of a plastic material while firmly fixing it to the cylinder block.

[0028] In the reciprocating compressor according to the present embodiment, the clamping elastic member can be formed to be curved on the side of the muffler assembly. This can suppress an increase in the height of the clamping member including the clamping elastic member, thereby preventing the clamping member from colliding with the shell when the compressor body vibrates.

[0029] In the reciprocating compressor according to the present embodiment, the clamping elastic member can be formed to be curved on the front surface of the muffler assembly. This allows the clamping elastic member to be expanded in curvature without expanding the space for fastening the clamping fixing member, effectively suppressing deformation of the muffler assembly and securely fixing it.

[0030] A reciprocating compressor according to the present embodiment includes a plurality of clamping fixing portions in which a clamping member is fastened to a cylinder block together with a clamping body portion and a muffler assembly, and a clamping elastic portion is formed to be curved between both ends of the clamping fixing portions so that the clamping member can press the cylinder cover and be fastened to the cylinder block together with the cylinder cover. Through this, the height of the clamping member including the clamping elastic portion can be increased while simultaneously suppressing deformation of the cylinder cover and firmly fixing the cylinder cover to the cylinder block.

[0031] In the reciprocating compressor according to the present embodiment, the clamping fixing portion can extend in both directions perpendicular to the longitudinal direction of the clamping body portion from both ends of the clamping body portion. Accordingly, the clamping force transmitted from the clamping fixing portion to the clamping body portion can be evenly distributed, so that the clamping body portion can uniformly support the cylinder block.

[0032] Fig. 1 is a perspective view showing the inside of a shell of a reciprocating compressor according to the present embodiment.

[0033] Fig. 2 is a cross-sectional view showing the inside of the reciprocating compressor according to Fig. 1.

[0034] Fig. 3 is a perspective view showing an exploded view of a clamping member according to the present embodiment.

[0035] Figure 4 is a front view showing the assembled clamping member in Figure 3.

[0036] Figure 5 is a cross-sectional view taken along line “Ⅸ-Ⅸ” of Figure 4.

[0037] Figures 6a and 6b are schematic diagrams for explaining the assembly process of the clamping member, with Figure 6a showing before fastening and Figure 6b showing after fastening, respectively.

[0038] Figure 7 is an exploded perspective view of another embodiment of a clamping member.

[0039] Figure 8 is a front view showing the assembled clamping member in Figure 7.

[0040] Figure 9 is a cross-sectional view taken along the line “Ⅹ-Ⅹ” of Figure 8.

[0041] Fig. 10 is an exploded perspective view of another embodiment of a clamping member.

[0042] Fig. 11 is a front view showing the assembled clamping member of Fig. 10.

[0043] Figure 12 is a plan view of Figure 11.

[0044] Hereinafter, a reciprocating compressor according to the present invention will be described in detail based on an embodiment illustrated in the attached drawings. As previously described, the muffler may be provided as a suction muffler and a discharge muffler independently, or may be provided as a single muffler assembly connected to each other. This embodiment will be described focusing on an example in which the suction muffler and the discharge muffler are connected to each other to form a single muffler assembly. However, the present invention is not limited thereto, and the same can be applied even when the suction muffler and the discharge muffler are provided independently.

[0045] In addition, the muffler assembly can be applied to other types of compressors, including reciprocating compressors, but this embodiment is described focusing on an example applied to a reciprocating compressor.

[0046] In addition, in the following description, the side toward the compression chamber centered on the piston is defined as the front, and the opposite side as the rear. In connection with this, the muffler assembly is described by defining the side facing the shell as the front, and the side facing away from the shell as the rear.

[0047] Fig. 1 is a perspective view showing the inside of a reciprocating compressor according to the present embodiment, and Fig. 2 is a cross-sectional view showing the inside of the reciprocating compressor according to Fig. 1.

[0048] Referring to FIGS. 1 and 2, a reciprocating compressor according to the present embodiment may include a shell (110) forming an exterior, an electric motor (120) provided in an internal space (110a) of the shell (110) and providing driving force, a compression unit (130) receiving driving force from the electric motor (120) to compress refrigerant, an intake / discharge unit (140) guiding refrigerant to a compression chamber (130a) and discharging the compressed refrigerant, and a damping unit (150) that buffers impact generated when a collision occurs between the shell (110) and the compressor body (C).

[0049] The shell (110) may include a lower shell (111) and an upper shell (112). The lower shell (111) and the upper shell (112) may be combined to form a sealed internal space (110a). The internal space (110a) of the shell (110) may accommodate a power unit (120) and a compression unit (130). The shell (110) may be made of a lightweight aluminum alloy (hereinafter, abbreviated as aluminum) having a high thermal conductivity.

[0050] The lower shell (111) may be formed in an approximately hemispherical shape. A suction pipe (115), a discharge pipe (116), and a process pipe (117) may be respectively penetrated and joined to the lower shell (111). These suction pipes (115), discharge pipes (116), and process pipes (117) may each be joined to the lower shell (111) by an insert die casting method.

[0051] The upper shell (112) can be formed in a roughly hemispherical shape like the lower shell (111). The upper shell (112) can be joined to the lower shell (111) on the upper side of the lower shell (111) to form the internal space (110a) of the shell (110) described above.

[0052] Referring to FIGS. 1 and 2, the electric motor (or drive motor) (120) according to the present embodiment may include a stator (121) and a rotor (122). The stator (121) may be elastically supported against the inner space (110a) of the shell (110), i.e., the bottom surface of the lower shell (111), and the rotor (122) may be rotatably installed inside the stator (121).

[0053] The stator (121) may include a stator core (1211) and a stator coil (1212).

[0054] The stator core (1211) is made of a metal material such as electrical steel, and when voltage is applied from the outside to the electric part (120), it performs electromagnetic interaction through electromagnetic force together with the stator coil (1212) and rotor (122) described later.

[0055] The stator core (1211) is formed in a roughly rectangular shape. For example, the inner circumference of the stator core (1211) may be formed in a circular shape, and the outer circumference may be formed in a rectangular shape. The stator core (1211) may be fixed to the lower surface of a cylinder block (131), which will be described later, by a stator fastening bolt (not shown).

[0056] The stator core (1211) can be flexibly supported by a support spring (123) at the lower end of the stator core (1211) relative to the bottom surface of the shell (110) while being spaced apart axially and radially from the inner surface of the shell (110). Accordingly, vibrations generated during operation can be suppressed from being directly transmitted to the shell (110).

[0057] The stator coil (1212) may be wound inside the stator core (1211). As described above, when voltage is applied from the outside, the stator coil (1212) generates an electromagnetic force and performs an electromagnetic interaction with the stator core (1211) and the rotor (122). Through this, the electric motor (120) generates a driving force for the reciprocating motion of the compression unit (130).

[0058] The rotor (122) may include a rotor core (1221) and a magnet (1222).

[0059] The rotor core (1221), like the stator core (1211), is made of a metal material such as electrical steel and can be formed into a roughly cylindrical shape. A drive shaft (125), which will be described later, can be press-fitted and joined to the center of the rotor core (1221).

[0060] The magnet (1222) is made of a permanent magnet and can be inserted and coupled at equal intervals along the circumference of the rotor core (1221). When voltage is applied, the rotor (122) rotates through electromagnetic interaction with the stator core (1211) and the stator coil (1212). Accordingly, the driving shaft (125) rotates together with the rotor (122) and transmits the rotational power of the electric part (120) to the compression part (130) through the connecting rod (126).

[0061] Referring to FIGS. 1 and 2, the compression unit (130) according to the present embodiment may include a cylinder block (131) and a piston (132). The cylinder block (131) is elastically supported on a shell (110), and the piston (132) is coupled to a drive shaft (125) by a connecting rod (126) and moves relative to the cylinder block (131).

[0062] The cylinder block (131) may be provided on one axial side of the electric motor (120), for example, on the upper side. The cylinder block (131) is fastened to the stator (121) with a stator fastening bolt (not shown), and may be elastically supported on the lower shell (111) together with the stator (121) of the electric motor (120).

[0063] The cylinder block (131) according to the present embodiment may include a frame portion (1311), a fixed projection portion (1312) coupled to a stator (121) of an electric unit (120), a shaft portion (1313) supporting a driving shaft (125), and a cylinder portion (cylinder) (1315) forming a compression chamber (130a).

[0064] The frame portion (1311) may be formed in a flat shape extending in the transverse direction, or may be formed in a radial shape by having a portion of the edge except for the corners processed to be thin.

[0065] The fixed protrusion (1312) may be formed at the edge of the frame portion (1311). For example, the fixed protrusion (1312) may be formed to protrude downward from the edge of the frame portion (1311) toward the power unit (120).

[0066] The shaft member (1313) can be formed to extend axially on both sides from the central portion of the frame member (1311). An shaft hole (1313a) is formed to penetrate the shaft member (1313) in the axial direction so that the drive shaft (125) can pass through it, and a bushing bearing can be inserted and coupled to the inner circumferential surface of the shaft hole (1313a).

[0067] A drive shaft (125) is axially supported on the upper end of the axle member (1313), and a drive shaft (125) can be radially supported on the inner circumferential surface of the axle member (1313). Accordingly, the drive shaft (125) can be axially and radially supported by the cylinder block (131).

[0068] A cylinder portion (hereinafter, abbreviated as cylinder) (1315) may be formed radially eccentrically from one edge of a frame portion (1311). A piston (132) connected to a connecting rod (126) may be inserted into the inner opening of the cylinder (1315) through the radial direction, and a valve assembly (141) forming an intake / exhaust portion (140) to be described later may be mounted on the outer opening.

[0069] The piston (132) may be formed flat with an open side (rear side) facing the connecting rod (126), while the opposite side (front side) facing away from the connecting rod (126) is closed. Accordingly, the connecting rod (126) is inserted into the rear side of the piston (132) and rotatably coupled, and the front side of the piston (132) forms a compression chamber (130a) inside the cylinder (1315) together with the valve assembly (141) described later.

[0070] Referring to FIGS. 1 and 2, the suction / discharge unit (140) according to the present embodiment may include a valve assembly (141), a muffler assembly (142), and a clamping member (143).

[0071] The valve assembly (141) may include an intake valve portion (not shown) and a discharge valve portion (not shown). The intake valve portion may connect the compression chamber (130a) to the intake connection groove (1421c2) (shown in FIG. 3) of the connecting muffler (1421c) to be described later, and the discharge valve portion may connect the compression chamber (130a) to the discharge connection groove (1421c3) (shown in FIG. 3) of the connecting muffler (1421c) to be described later. Accordingly, the intake valve portion and the discharge valve portion may be formed to be adjacent to each other on a plane.

[0072] The muffler assembly (142) may include an upper muffler (shown in FIG. 3) (1421) and a lower muffler (shown in FIG. 3) (1422). In other words, the muffler assembly (142) may be formed by combining the upper muffler (1421) and the lower muffler (1422) to form an intake space (S1) of an intake muffler (142a) and an exhaust space (S2) of an exhaust muffler (142b), respectively. The muffler assembly (142) will be described later together with the partition member (145).

[0073] The clamping member (143) is provided at the front of the suction / discharge portion (140), that is, at the front surface of the muffler assembly (142), so as to fix the muffler assembly (142) to the cylinder block (131) of the compression portion (130).

[0074] Specifically, the clamping member (143) may include a clamping main body (1431), a clamping fixing member (1432), and a clamping elastic member (1433). The clamping main body (1431) is a part that is in close contact with the front surface of the muffler assembly (142), the clamping fixing member (1432) is a part that is fastened to the front end surface of the cylinder block (131), and the clamping elastic member (1433) is a part that elastically deforms when clamping is fixed so that the clamping main body is closely fastened to the muffler assembly (142). Accordingly, the clamping member (143) can be firmly fastened to the front end surface of the cylinder block (131) while being in close contact with the muffler assembly (142).

[0075] The clamping body (471) may be formed in a thin plate shape of a circle or an oval. For example, the clamping body (1431) may be formed in a shape approximately identical to that of the connecting muffler (1421c) forming the upper muffler (1421) of the muffler assembly (142). Accordingly, the clamping body (1431) can evenly transmit force across the entire surface of the connecting muffler (1421c) to stably support the connecting muffler (1421c).

[0076] The clamping fixing part (1432) may be formed as a single body extending from the clamping main body (1431). In other words, the clamping fixing part (1432) may be provided in multiple pieces and formed at preset intervals along the outer circumference of the clamping main body (1431). For example, the multiple clamping fixing parts (1432) may be spaced at equal intervals along the circumferential direction to form an approximately triangular shape. Accordingly, the support force of the clamping main body (1431) may be uniformly distributed along the circumferential direction.

[0077] The clamping elastic member (1433) may be formed to be curved between both ends of the clamping fixing member (1432). For example, the clamping elastic member (1433) may be formed to be bent in a semicircular cross-section shape or a wedge cross-section shape in the middle of the clamping fixing member (1432) and positioned on the side of the connecting muffler (1421c). This embodiment illustrates an example in which the clamping elastic member (1433) is bent in a semicircular cross-section shape. Accordingly, when the clamping fixing member (1432) is bolt-fastened to the front end surface of the cylinder block (131), the clamping elastic member (1433) spreads and stretches, causing the clamping main body (1431) to press the connecting muffler (1421c) of the muffler assembly (142) toward the front end surface of the cylinder block (131). Through this, when the clamping member (143) fixes the muffler assembly (142) to the cylinder block (131), the clamping elastic member (1433) acts as a kind of buffer, thereby suppressing deformation of the muffler assembly (142) made of plastic material while firmly fixing it to the cylinder block (131). The clamping member (143) will be described later together with the muffler assembly (142).

[0078] Referring to FIGS. 1 and 2, the damping unit (150) according to the present embodiment is provided on both sides of the reciprocating direction of the piston (132), and may include a front damper (151) and a rear damper (152). The front damper (151) and the rear damper (152) may be made of an elastic material such as rubber.

[0079] The front damper (151) may be provided on the upper side of the cylinder block (310) and the muffler assembly (142), that is, on the upper front side of the cylinder block (131). For example, the front damper (151) may be formed in an arc shape and provided to surround the upper surface of the cylinder block (131) and the upper surface of the muffler assembly (142). Accordingly, the front damper (151) can effectively suppress or buffer the impact caused by the collision between the compression unit (130) and the intake / exhaust unit (400) and the shell (110) when the compressor is driven.

[0080] The rear damper (152) may be provided on the upper rear side of the cylinder block (310). For example, the rear damper (152) may be formed in a plate shape and provided on both rear corners of the cylinder block (131) and / or between both corners. Accordingly, the rear damper (152) can effectively suppress or buffer the impact caused by the collision between the shell (110) and the compression unit (130) when the compressor is driven.

[0081] 1251 is the oil pipe, 1255 is the oil feeder, 127 is the balance weight, and 1422a2 is the intake.

[0082] The reciprocating compressor according to the above embodiment operates as follows.

[0083] That is, when power is applied to the electric motor (120), the rotor (122) rotates. When the rotor (122) rotates, the drive shaft (125) coupled to the rotor (122) rotates and transmits the rotational force to the piston (132) through the connecting rod (126). The piston (132) reciprocates in the forward and backward direction with respect to the cylinder (1315) by the connecting rod (126).

[0084] For example, when the piston (132) moves backward (suction stroke) in the cylinder (1315), the volume of the compression chamber (130a) increases. When the volume of the compression chamber (130a) increases, the refrigerant filled in the suction space (S1) of the muffler assembly (142) through the suction pipe (115) passes through the suction valve part of the valve assembly (141) and is sucked into the compression chamber (130a). At this time, as the suction pipe (115) is spaced apart from the suction port (1422a2) of the muffler assembly (142), a portion of the oil stored in the internal space (110a) of the shell (110) may flow into the suction space (S1) of the muffler assembly (142) together with the refrigerant.

[0085] Conversely, when the piston (132) moves forward (discharge stroke) in the cylinder (1315), the volume of the compression chamber (130a) is reduced. When the volume of the compression chamber (130a) is reduced, the refrigerant filled in the compression chamber (130a) is compressed and discharged through the discharge valve part of the valve assembly (141) into the discharge connection groove of the connecting muffler (1421c). The refrigerant is discharged into the discharge space (S2) forming the discharge muffler (142b) and then discharged to the refrigeration cycle through the discharge pipe (116) via the loop pipe (118), repeating a series of processes.

[0086] At this time, since the muffler assembly (142) is formed of a plastic material, it is possible to minimize the transfer of compression heat of the refrigerant discharged through the discharge space of the muffler assembly (142) to the internal space of the shell (110). This makes it possible to suppress the heating of the refrigerant sucked into the internal space of the shell (110), thereby minimizing suction loss.

[0087] In this case, since the muffler assembly (142) is connected to the compression chamber, the muffler assembly (142) must be tightly fastened to the cylinder block (131) with the valve assembly (141) in between so that refrigerant leakage from the compression chamber can be prevented. However, as described above, since the muffler assembly (142) is formed of a plastic material, a separate clamping member (143) is added to fasten the muffler assembly (142) to the cylinder block (131), but this may cause the muffler assembly (142) made of a plastic material to be deformed or not firmly fixed due to processing errors and / or assembly errors of the muffler assembly (142) and the clamping member (143).

[0088] Accordingly, in this embodiment, by adding a clamping elastic member (1433) to the clamping member (143), the muffler assembly (142) can be firmly fixed while preventing deformation even if the muffler assembly (142) is formed of a plastic material.

[0089] Fig. 3 is a perspective view showing an exploded view of a clamping member according to the present embodiment, Fig. 4 is a front view showing the assembled clamping member of Fig. 3, and Fig. 5 is a cross-sectional view taken along line “Ⅸ-Ⅸ” of Fig. 4.

[0090] Referring to FIGS. 3 to 5, the muffler assembly (142) according to the present embodiment is composed of an upper muffler (1421) and a lower muffler (1422) made of plastic material as described above, and the upper muffler (1421) and the lower muffler (1422) can be assembled to form a suction muffler (142a) on one side and a discharge muffler (142b) on the other side.

[0091] Specifically, the upper muffler (1421) may include an upper suction muffler (1421a), an upper discharge muffler (1421b), and a connecting muffler (1421c). In other words, the upper suction muffler (1421a) and the upper discharge muffler (1421b) may be connected as a single body by the connecting muffler (1421c) to form the upper muffler (1421).

[0092] The upper suction muffler (1421a) may be formed in a cap cross-sectional shape with one side (e.g., the lower side) open. Accordingly, the upper suction muffler (1421a) may form a suction muffler (142a) together with the lower suction muffler (1422a) described later.

[0093] At least one hook-hook groove (1421a1) may be formed at the opening end of the upper suction muffler (1421a) to be coupled to a hook projection (1422a1) of the lower suction muffler (1422a) to be described later. Accordingly, the upper suction muffler (1421a) and the lower suction muffler (1422a) may be hook-coupled.

[0094] The upper discharge muffler (1421b) may be formed in a cap cross-sectional shape with one side (e.g., the lower side) open. Accordingly, the upper discharge muffler (1421b) may form a discharge muffler (142b) together with the lower discharge muffler (1422b) described below.

[0095] The connecting muffler (1421c) may have an upper suction muffler (1421a) extended from one side of the outer surface, and an upper discharge muffler (1421b) extended from the other side of the outer surface. In other words, the upper suction muffler (1421a) and the upper discharge muffler (1421b) may be extended as a single body on both the left and right sides of the connecting muffler (1421c).

[0096] One side of the connecting muffler (1421c), for example, the inner side facing the cylinder block (131), is formed in an open cap cross-section shape, and the inner space of the connecting muffler (1421c) can be divided into a suction connection groove (not shown) communicating with the upper suction muffler (1421a) and a discharge connection groove (not shown) communicating with the upper discharge muffler (1421b) with a partition wall protrusion (not shown). Accordingly, the suction connection groove of the connecting muffler (1421c) can be communicated with the compression chamber (130a) through the suction valve portion, and the discharge connection groove of the connecting muffler (1421c) can be communicated with the compression chamber (130a) through the discharge valve portion.

[0097] The lower muffler (1422) may be formed in a cup cross-sectional shape with one side (e.g., the upper side) open. Accordingly, the lower suction muffler (1422a) may form a suction muffler (142a) together with the upper suction muffler (1421a) as described above.

[0098] At least one hook projection (1422a1) may be formed at the opening end of the lower suction muffler (1422a) so as to be hooked onto and connected to the hook groove (1421a1) of the upper suction muffler (1421a). Accordingly, the lower suction muffler (1422a) can be hook-connected to the upper suction muffler (1421a).

[0099] Additionally, a suction port (1422a2) may be formed through the outer surface of the lower suction muffler (1422a). The suction port (1422a2) is formed to face the end of a suction pipe (115) penetrating the shell (110), but may be indirectly connected through the internal space (110a) of the shell (110).

[0100] The lower discharge muffler (1422b) may be formed in a cup cross-sectional shape with one side (e.g., the upper side) open. Accordingly, the lower discharge muffler (1422b) may form a discharge muffler (142b) together with the upper discharge muffler (1421b) as described above.

[0101] The opening of the lower discharge muffler (1422b) can be sealed by being fused or bonded to the opening of the upper discharge muffler (1421b). Accordingly, the leakage of high-pressure refrigerant discharged into the discharge space (S2) of the discharge muffler (142b) can be effectively prevented.

[0102] Referring to FIGS. 3 to 5, the clamping member (143) according to the present embodiment may include a clamping main body (1431), a clamping fixing member (1432), and a clamping elastic member (1433) as described above. The clamping main body (1431), the clamping fixing member (1432), and the clamping elastic member (1433) may be formed as a single body. Accordingly, the clamping member (143) may be easily manufactured.

[0103] The clamping main body (1431) may be formed in a circular cross-section shape, an oval cross-section shape, or a polygonal cross-section shape. This embodiment illustrates an example in which the clamping main body (1431) is formed in a circular cross-section shape. For example, the connecting muffler (1421c) of the muffler assembly (142) may be formed in a circular cross-section shape, and the clamping main body (1431) may be formed in a circular cross-section shape to correspond to the front surface of the connecting muffler (1421c). In other words, the diameter of the clamping main body (1431) may be formed to be almost the same as the outer diameter of the connecting muffler (1421c). Accordingly, the clamping main body (1431) evenly applies pressure to the entire area of ​​the connecting muffler (1421c), thereby suppressing deformation of the connecting muffler (1421c) and firmly fixing it.

[0104] In addition, the clamping main body (1431) can be formed flat. In this case, one side of the clamping main body (1431), that is, the rear surface of the clamping main body (1431) facing the front surface of the connecting muffler (1421c), can be formed flat together with the front surface of the connecting muffler (1421c). Accordingly, when the clamping member (143) is fastened, the clamping main body (1431) makes surface contact with the entire area of ​​the connecting muffler (1421c) and evenly applies pressure, thereby more effectively suppressing deformation of the connecting muffler (1421c) and more firmly fixing it.

[0105] Although not shown in the drawing, a portion of the clamping body (1431) may protrude toward the connecting muffler (1421c) to form an elastic support portion (not shown). Accordingly, the elastic support portion (not shown) may press the connecting muffler (1421c) more strongly to further increase the supporting force for the connecting muffler (1421c). However, in this case, the cross-sectional area of ​​the elastic support portion may be formed as wide as possible or formed along the center and / or edge of the connecting muffler (1421c) to minimize deformation of the connecting muffler (1421c).

[0106] The clamping fixing portion (1432) may extend from the outer surface of the clamping body (1431), and a plurality of portions (three in the drawing) may be formed at equal intervals along the circumference of the clamping body (1431). In other words, the clamping fixing portions (1432) may each be bent in a direction from the outer surface of the clamping body (1431) toward the cylinder block (131). For example, when the outer diameter of the clamping body (1431) is almost the same as the outer diameter of the connecting muffler (1421c), the clamping fixing portion (1432) may be bent at an almost right angle from the outer surface of the clamping body (1431) toward the cylinder block (131), that is, toward the rear in the suction direction of the piston (132). Accordingly, it is advantageous to miniaturize the compressor body (C) including the cylinder block (131) by minimizing the area required for fastening the clamping fixing part (1432).

[0107] In addition, the end of the clamping fixing member (1432) may be bent radially to form a clamping fixing member (1432a), and a fastening hole (1432b) may be formed in the clamping fixing member (1432a) to correspond to a fastening groove (131a) provided in the cylinder block (131). Accordingly, the clamping fixing member (1432) may be firmly fastened to the cylinder block (131) by a fastening member (1434) passing through the fastening hole (1432b) of the clamping fixing member (1432a).

[0108] In addition, the length of the clamping fixing part (1432) can be formed to be smaller than the thickness of the muffler assembly (142), that is, the thickness of the connecting muffler (1421c). Accordingly, when assembling the clamping member (143), the rear surface of the clamping body part (1431) is in contact with the front surface of the connecting muffler (1421c), and the end of the clamping fixing part (1432), that is, the clamping fixing end (1432a), can be spaced apart from the cylinder block (131) by a preset deformation gap (t). This can be compensated for by the elastic deformation of the clamping elastic part (1433) when the fastening member (1434) is fastened.

[0109] Here, the thickness of the muffler assembly (142) includes the thickness of the valve assembly (141) and other parts provided between the cylinder block (131) and the clamping body (1431) in addition to the thickness of the connecting muffler (1421c), but for convenience, the entire thickness of these parts is defined as the thickness of the connecting muffler (1421c) and explained.

[0110] As described above, the clamping elastic member (1433) may be formed to be curved in the middle of each clamping fixing member (1432). For example, the clamping elastic member (1433) may be formed to be curved by a preset curvature between both ends of each clamping fixing member (1432). In other words, the clamping elastic member (1433) may be formed to be curved in a direction orthogonal to the side of the connecting muffler (1421c), that is, the reciprocating direction of the piston (132). Accordingly, the height of the clamping member (143) including the clamping elastic member (1433) is suppressed from increasing, thereby preventing the clamping member (143) from colliding with the shell (110) when the compressor body (C) vibrates.

[0111] In this case, the clamping elastic portion (1433) may be formed in the same position and / or with the same specifications in each clamping fixing portion (1432). Accordingly, when the clamping fixing portion (1432) is fastened, each clamping elastic portion (1433) may be uniformly elastically deformed, thereby transmitting a uniform force to the clamping main body portion (1431).

[0112] In this case, the clamping elastic portion may be formed only once in each clamping fixing portion (1432), or a plurality of portions may be formed at preset intervals. In the former case, processing of the clamping member (143) including the clamping elastic portion (1433) can be facilitated, and in the latter case, the elastic deformation force of the clamping elastic portion (1433) can be increased while the size of each clamping elastic portion (1433) can be formed smaller. This embodiment illustrates an example in which one clamping elastic portion (1433) is formed in each clamping fixing portion (1432).

[0113] In the case where the clamping elastic portion (1433) is provided in the clamping member (143) as described above, when the clamping member (143) is fastened, the clamping elastic portion (1433) may be elastically deformed to pressurize the muffler assembly (142). Accordingly, even if the muffler assembly (142) is formed of a plastic material, when the muffler assembly (142) is fastened, the muffler assembly (142) can be firmly fixed while suppressing deformation by the clamping member (143).

[0114] Figures 6a and 6b are schematic diagrams for explaining the assembly process of the clamping member, with Figure 6a showing before fastening and Figure 6b showing after fastening, respectively.

[0115] First, as shown in Fig. 6a, before fastening the clamping member (143), the clamping body part (1431) of the clamping member (143) is in contact with the connecting muffler (1421c) of the muffler assembly (142), but the clamping fixing part (1432) of the clamping member (143) is spaced apart from the cylinder block (131) by a preset deformation gap (t). In other words, by sufficiently securing the allowable tolerance between the connecting muffler (1421c) of the muffler assembly (142) and / or the clamping member (143), before fastening the clamping member (143), the clamping member (143) can be maintained in a spaced-off state without being in close contact with the cylinder block (131).

[0116] Next, when the clamping member (143) is fastened as shown in FIG. 6b, the clamping fixing portion (1432) of the clamping member (143) is pressed against the fastening member (1434) and pushed toward the cylinder block (131) to be in close contact. At this time, the clamping elastic portion (1433) of the clamping member (143) is elastically stretched by the deformation interval (t) described above, thereby pulling the clamping main body portion (1431) toward the cylinder block (131), that is, the connecting muffler (1421c) of the muffler assembly (142). Then, the clamping main body portion (1431) is pressed tightly against the connecting muffler (1421c) to firmly fix the muffler assembly (142).

[0117] However, in this case, the clamping elastic portion (1433) is formed to be curved and has elasticity, thereby offsetting to a certain extent the force with which the clamping main body portion (1431) presses the connecting muffler (1421c). Accordingly, the clamping main body portion (1431) is prevented from excessively pressing the connecting muffler (1421c), thereby preventing deformation of the muffler assembly (142) including the connecting muffler (1421c).

[0118] Meanwhile, there are other examples of clamping members as follows.

[0119] That is, in the above-described embodiment, the clamping elastic portion is formed on the side of the connecting muffler, but in some cases, the clamping elastic portion may be formed on the front surface of the connecting muffler.

[0120] Fig. 7 is an exploded perspective view of another embodiment of a clamping member, Fig. 8 is a front view of the clamping member of Fig. 7 assembled, and Fig. 9 is a cross-sectional view taken along line “Ⅹ-Ⅹ” of Fig. 8.

[0121] Referring to FIGS. 7 to 9, the clamping member (143) according to the present embodiment may include a clamping main body (1431), a clamping fixing part (1432), and a clamping elastic part (1433). For example, the clamping main body (1431) may be formed in a flat disc shape, the clamping fixing part (1432) may be extended as a single body at equal intervals along the circumferential direction from the outer surface of the clamping main body (1431), and the clamping elastic part (1433) may be formed to be curved in a semicircular cross-section shape having a preset curvature in the clamping fixing part (1432). Accordingly, when the clamping member (143) is fastened, the clamping elastic part (1433) is elastically deformed and the clamping body part (1431) is pulled toward the muffler assembly (142), thereby suppressing deformation of the muffler assembly (142) while firmly fixing it to the cylinder block (131).

[0122] The basic configuration and the resulting operational effects of the clamping main body (1431), clamping fixing portion (1432), and clamping elastic portion (1433) are almost similar to those of the above-described embodiment, and therefore, the description thereof is replaced with the description of the above-described embodiment.

[0123] However, in the present embodiment, the clamping elastic portion (1433) may be formed to be positioned on the front surface of the connecting muffler (1421c). In other words, the clamping elastic portion (1433) may be formed to be bent by the clamping fixing portion (1432) being first bent toward the shell (110) from the clamping main body portion (1431) and then secondarily bent toward the cylinder block (131). Accordingly, the clamping elastic portion (1433) may protrude closer to the shell (110) than the clamping main body portion (1431).

[0124] In this case, the center of curvature of the clamping elastic part (1433) may be formed outside the range of the clamping main body (1431) or may be formed within the range of the clamping main body (1431). In the former case, the outer diameter of the clamping main body (1431) is formed to be almost similar to the outer diameter of the connecting muffler (1421c) as in the above-described embodiment, thereby widely securing the pressing force against the connecting muffler (1421c), whereas in the latter case, the curvature of the clamping elastic part (1433) is secured relatively large, thereby increasing the elastic force. This embodiment illustrates an example of the latter case, that is, the center of curvature of the clamping elastic part (1433) is formed within the range of the clamping main body (1431).

[0125] In the case where the clamping elastic portion (1433) is formed on the front surface of the connecting muffler (1421c) as described above, the size of the muffler assembly (142), i.e., the space between the upper discharge muffler (1421b) and the connecting muffler (1421c) for fastening the clamping fixing end (1432a) and / or the outer diameter of the cylinder block (131) can be expanded to increase the curvature of the clamping elastic portion (1433). This increases the elastic deformation force of the clamping elastic portion (1433), thereby effectively suppressing deformation of the muffler assembly (142) and allowing it to be firmly fixed.

[0126] Although not illustrated in the drawing, the clamping elastic portion (1433) may be formed on the side and front surfaces of the connecting muffler (1421c), respectively. In other words, the clamping elastic portion (1433) may be formed by combining the embodiments of FIG. 3 and FIG. 7. In this case, the elastic deformation force of the clamping elastic portion (1433) is further increased, so that deformation of the muffler assembly (142) can be more effectively suppressed and more firmly fixed.

[0127] Meanwhile, another embodiment of the clamping member is as follows.

[0128] That is, in the above-described embodiments, when the muffler assembly is formed as a single body with the suction muffler and the discharge muffler, the clamping elastic member is provided in the clamping member. However, in some cases, even when the suction muffler and the discharge muffler forming the muffler assembly are separated, the clamping elastic member may be provided in the clamping member. In the following description, the suction muffler is defined as the muffler body.

[0129] Fig. 10 is an exploded perspective view of another embodiment of a clamping member, Fig. 11 is a front view of the clamping member of Fig. 10 assembled, and Fig. 12 is a plan view of Fig. 11.

[0130] Referring to FIGS. 10 to 12, a muffler assembly (142) according to the present embodiment may include a muffler body (142a) and a cylinder cover (1435). The muffler body (142a) is in close contact with the front surface of the valve assembly (141), and the cylinder cover (1435) may accommodate the muffler body (142a) and be fixed to the cylinder block (131) together with the valve assembly (141). Accordingly, the muffler body (142a) may be fixed to the cylinder block (131) by the cylinder cover (1435).

[0131] As described above, the muffler body (142a) is defined as a suction muffler, and a suction space (S1) communicating with the internal space (110a) of the shell (110) can be formed. Accordingly, the refrigerant sucked into the internal space (110a) of the shell (110) can be sucked into the compression chamber (130a) through the suction space (S1) of the muffler body (142a) forming the suction muffler.

[0132] The cylinder cover (1435) can be formed in a roughly square plate shape. Accordingly, the cylinder cover (1435) has a fastening hole (1435e) formed at each corner so that it can be fastened to the cylinder block (131) with a bolt.

[0133] In addition, the cylinder cover (1435) may be formed of an insulating material such as plastic, as a discharge passage groove (1435b), which will be described later, is formed on one side thereof. Accordingly, the compression heat of the refrigerant discharged through the discharge passage groove (1435b) is minimized from being transferred to the internal space (110a) of the shell (110), thereby reducing suction loss.

[0134] Specifically, the cylinder cover (1435) may have a muffler receiving groove (1435a) formed on one side, that is, the rear side facing the cylinder block (131), for receiving a muffler body (142a), and a discharge passage groove (1435b) may be formed around the muffler receiving groove (1435a) to connect the compression chamber (130a) and the discharge muffler (142b). Accordingly, the refrigerant compressed in the compression chamber (130a) may be discharged to the discharge muffler (142b) through the discharge passage groove (1435b) of the cylinder cover (1435).

[0135] The cylinder cover (1435) may have a clamping support surface (1435c) formed at the center of the front surface facing the inner surface of the shell (110), which is supported by the clamping body part (1431) described later. The clamping support surface (1435c) may be formed flat together with the rear surface of the clamping body part (1431) facing it.

[0136] In addition, a plurality of clamping fixing surfaces (1435d) may be formed around the clamping support surface (1435c), for example, at each corner of the cylinder cover (1435), in which the ends of the clamping fixing members (1432) are in close contact and fastened to the cylinder block (131). A fastening hole (1435e) may be formed in the clamping fixing surface (1435d) to correspond to the fastening groove (131a) of the cylinder block (131) described above. Accordingly, the clamping member (143) may be fastened to the cylinder block (131) by a fastening member (1434) that penetrates the fastening hole (1435e) and is fastened to the fastening groove (131a).

[0137] In addition, the clamping support surface (1435c) may be formed to be long in the axial direction, and the clamping fixing surface (1435d) may be formed to be recessed toward the cylinder block (131) lower than the clamping support surface (1435c) on both sides in the longitudinal direction of the clamping support surface (1435c). Accordingly, the clamping fixing surface (1435d) may be formed lower than the clamping support surface (1435c), so that a height difference may be formed between the clamping support surface (1435c) and the clamping fixing surface (1435d).

[0138] The clamping member (143) according to the present embodiment may include a clamping main body (1431), a clamping fixing member (1432), and a clamping elastic member (1433). The clamping main body (1431) is a part that supports the cylinder cover (1435), the clamping fixing member (1432) is a part that fixes the cylinder cover (1435) to the cylinder block (131), and the clamping elastic member (1433) is a part that elastically deforms when the clamping member (143) is fastened, thereby causing the clamping main body (1431) to press the cylinder cover (1435). Since the basic configuration and the resulting operational effects of the clamping main body (1431), the clamping fixing member (1432), and the clamping elastic member (1433) are similar to those of the above-described embodiments, a description thereof will be provided instead of the above-described embodiments.

[0139] However, in the present embodiment, since the cylinder cover (1435) to which the clamping member (143) is attached is formed in a square plate shape, the clamping member (143) may also be formed to correspond to the shape of the cylinder cover (1435). For example, the clamping main body portion (1431) may be formed to be long in the axial direction to correspond to the clamping support surface (1435c). Accordingly, the clamping main body portion (1431) evenly transmits the pressing force to the entire clamping support surface (1435c), thereby suppressing deformation of the cylinder cover (1435) and stably fixing it.

[0140] The clamping fixing part (1432) can be extended by being bent in both transverse directions from both ends of the longitudinal direction of the clamping body part (1431) toward the four corners of the cylinder cover (1435), that is, the clamping fixing surface (1435d). In this case, the clamping fixing part (1432) can be extended in both directions (e.g., the circumferential direction) perpendicular to the longitudinal direction (e.g., the axial direction) of the clamping body part (1431) from both ends of the clamping body part (1431). In other words, the clamping fixing part (1432) can be formed by extending the same length along both circumferential directions based on the clamping body part (1431). Accordingly, the fixing force transmitted from the clamping fixing part (1432) to the clamping main body (1431) is evenly distributed, so that the clamping main body (1431) can uniformly support the cylinder block (131).

[0141] Although not shown in the drawing, the clamping fixing part (1432) may extend to different lengths in the circumferential direction. For example, the length of the clamping fixing part (lower clamping fixing part) (1432) on the axially lower side may be formed shorter than the length of the clamping fixing part (upper clamping fixing part) (1432) on the axially upper side. In this case, the fixing force of the lower clamping fixing part (1432) increases, so that the muffler body (142a) extending to the lower side of the cylinder block (131) can be stably fixed.

[0142] The clamping elastic member (1433) may be formed to be positioned between the two ends of the clamping fixing member (1432), that is, between the clamping support surface (1435c) and the clamping fixing surface (1435d) of the cylinder cover (1435). Accordingly, the clamping elastic member (1433) may be formed to be positioned on the side of the cylinder cover (1435), thereby preventing the clamp member (143) from colliding with the shell (110) when the compressor body (C) vibrates.

[0143] The clamping elastic member (1433) may be formed in a semicircular cross-section shape with a preset curvature, as in the previously described embodiment, or may be formed by bending into a wedge cross-section shape. Accordingly, even if a processing error and / or assembly error occurs between the cylinder cover (1435) and / or the clamping member (143), the cylinder cover (1435) can be stably fixed.

[0144] In addition, even if the cylinder cover (1435) is formed of a material with low hardness such as plastic, it is possible to prevent the cylinder cover (1435) from being deformed and damaged during the process of fastening it to the cylinder block (131).

Claims

1. Shell; A driving motor provided in the internal space of the above shell; A driving shaft coupled to the rotor of the above driving motor; A piston coupled to the above driving shaft and performing reciprocating motion; A cylinder block having a cylinder so that the piston is reciprocally inserted to form a compression chamber together with the piston; A muffler assembly coupled to the cylinder block and connected to the compression chamber; and Including a clamping member that secures the above muffler assembly to the cylinder block, The above clamping member comprises: A reciprocating compressor having a clamping elastic member that elastically deforms when the clamping member is fastened so that the muffler assembly is pressed toward the cylinder block.

2. In paragraph 1, The above clamping member is, A clamping body part supporting the above muffler assembly; and It includes a plurality of clamping fixing parts that extend from the clamping main body and are fixed to the cylinder block, The above clamping elastic part is, A reciprocating compressor formed in a curved manner in the above clamping fixing section.

3. In paragraph 2, The above clamping elastic part is, A reciprocating compressor formed to be curved on the side of the above muffler assembly.

4. In paragraph 3, The above clamping fixing part is bent and extended from the clamping body part toward the cylinder block, The above clamping elastic part is, A reciprocating compressor formed in a curved manner between the two ends of the above clamping fixing member.

5. In paragraph 2, The above clamping elastic part is, A reciprocating compressor formed in a curved manner on the front surface of the above muffler assembly.

6. In paragraph 5, The above clamping elastic part is, A reciprocating compressor formed by bending the clamping body toward the shell and then bending toward the cylinder block.

7. In any one of paragraphs 1 to 6, The above muffler assembly, An upper muffler in which an upper intake muffler and an upper discharge muffler are formed as a single body with a connecting muffler between them; and It includes a lower muffler having a lower suction muffler that is combined with the upper suction muffler to form a suction space, and a lower discharge muffler that is combined with the upper discharge muffler to form a discharge space. The above clamping member is, A reciprocating compressor connected to the cylinder block by supporting the above connecting muffler.

8. In paragraph 7, A reciprocating compressor in which one side of the clamping member and one side of the connecting muffler facing it are formed flat so as to be in surface contact with each other.

9. In paragraph 1, The above clamping member is, A clamping body part supporting the above muffler assembly; and It includes a plurality of clamping fixing parts that extend from the clamping main body and are fixed to the cylinder block together with the muffler assembly. The above clamping elastic part is, A reciprocating compressor formed in a curved manner between the two ends of the above clamping fixing member.

10. In paragraph 9, The above muffler assembly, A muffler body having an intake space or an exhaust space; and Includes a cylinder cover that accommodates the muffler body and is fixed to the cylinder block, The above clamping member is, A reciprocating compressor that pressurizes the above cylinder cover and is connected to the cylinder block together with the cylinder cover.

11. In paragraph 10, On one side of the cylinder cover facing the clamping member, a clamping support surface supported by the clamping main body is formed, A plurality of clamping fixing surfaces are formed around the above clamping support surface, with the ends of the clamping fixing portions being in close contact with each other and fastened to the cylinder block. The above clamping fixing surface is, A reciprocating compressor formed so as to be sunken toward the cylinder block rather than the clamping support surface.

12. In paragraph 11, The above clamping elastic part is, A reciprocating compressor formed so as to be positioned between the clamping support surface and the clamping fixing surface of the above cylinder cover.

13. In paragraph 11, A reciprocating compressor in which the clamping support surface and one side of the clamping body portion facing it are formed flat so as to be in surface contact with each other.

14. In any one of paragraphs 9 to 13, The above clamping fixing part, A reciprocating compressor extending in both directions perpendicular to the longitudinal direction of the clamping body from both ends of the clamping body.

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