Hermetic compressor

Abstract

A hermetic compressor is disclosed. The vibration damping member of the hermetic compressor is disposed inside or outside the housing. A plurality of rigid parts can be arranged circumferentially around a vibrating body at predetermined intervals and are integrated with the vibrating body. A mass part can be formed in a ring shape to connect the plurality of rigid parts to each other, or formed in an arc shape so that each of the plurality of rigid parts is independently connected to the mass part. Therefore, even with a drive motor that functions as a rotary motor, the vibration damping member can absorb the torsional vibrations caused by it, thereby effectively reducing the vibration noise of the compressor.

Description

Technical Field

[0001] This utility model relates to compressors, and more particularly to a hermetic compressor with a rotary motor. Background Technology

[0002] Compressors can be classified into open-type compressors, in which the drive unit (or electric unit) is located outside the housing and only the compression unit is located inside the housing, and closed-type compressors, in which the drive unit (or electric unit) and the compression unit are located together inside the housing.

[0003] In a compressor, vibrations occur in the drive section and the compression section. Compared to an open compressor, a closed compressor, in which the drive section and the compression section are located together inside the casing, can generate greater vibrations.

[0004] Therefore, in the past, anti-vibration rubber was installed on the base supporting the compressor on the compressor mounting surface to suppress the transmission of vibrations generated inside the housing to the refrigeration cycle through the housing. However, this is not effective in absorbing vibrations generated inside the compressor, resulting in insufficient attenuation of vibrations in the compressor and the refrigeration cycle using the compressor.

[0005] Typically, the known mechanism for damping the vibration of a vibrating body is the dynamic vibration absorber (hereinafter, used interchangeably with vibration damping component). Existing dynamic vibration absorber technologies mainly set the inverse mode frequency of the dynamic vibration absorber within the same frequency band as the mode required for damping the vibrating body (mainly shafts or pipes). Therefore, the focus is on adjusting the rigidity between the mass portion of the vibrating body and the dynamic vibration absorber through various methods.

[0006] However, in hermetic compressors with rotary motors, there are not only structural difficulties in installing a dynamic vibration absorber inside the casing, but also the problem of increased compressor size when the dynamic vibration absorber is installed inside the casing.

[0007] In addition, when the dynamic vibration absorber is located outside the housing, additional components are required, which increases assembly time and may lead to higher manufacturing costs. Utility Model Content

[0008] Problems to be solved by the utility model

[0009] The purpose of this invention is to provide a hermetic compressor that has a rotary motor and a dynamic vibration absorber installed inside the housing to reduce vibration noise.

[0010] Another objective of this invention is to provide a hermetic compressor that can house a dynamic vibration absorber inside the housing without excessively increasing the size of the housing.

[0011] Another objective of this invention is to provide a hermetic compressor that can minimize the number of components while placing the power vibration absorber outside the housing.

[0012] Technical solutions to the problem

[0013] To achieve the objective of this invention, a hermetic compressor is disclosed, comprising a housing, a drive motor, a compression unit, a rotating shaft, and a vibration damping member. The drive motor can be disposed within the interior space of the housing, generating rotational force. The compression unit can be disposed within the interior space of the housing, operating under the rotational force generated by the drive motor and compressing refrigerant. The rotating shaft can connect the drive motor and the compression unit, transmitting the rotational force of the drive motor to the compression unit. The vibration damping member can be disposed inside or outside the housing, and dampens vibrations. The vibration damping member can include a plurality of rigid parts and a mass part. The plurality of rigid parts can be arranged circumferentially around a vibrating body at predetermined intervals and are connected to the vibrating body. The mass part can be formed in a ring shape to connect the plurality of rigid parts to each other, or formed in an arc shape so that each of the plurality of rigid parts is independently connected to the mass part. Thus, even with a drive motor that functions as a rotary motor, the vibration damping member can absorb the torsional vibrations caused by it, thereby effectively reducing the vibration noise of the compressor.

[0014] As an example, the compression section may include a main frame, a fixed scroll plate, and a rotary scroll plate. The main frame may be fixed to the interior space of the housing. The fixed scroll plate may be attached to the main frame on the opposite side of the drive motor. The rotary scroll plate may be disposed between the main frame and the fixed scroll plate, forming a compression chamber between the rotary scroll plate and the fixed scroll plate. The vibration damping member may be disposed within the interior space of the housing. Thus, the torsional torque generated within the interior space of the housing is attenuated within the housing, thereby preventing the compressor vibration from being transmitted to the outside in advance.

[0015] For example, the compression section can be located on the lower side of the drive motor. The vibration damping member can be located on the opposite side of the axial side of the compression section facing the drive motor. This allows for effective utilization of the internal space of the housing, suppressing an increase in the housing volume while simultaneously providing a vibration damping member within the housing's internal space.

[0016] As another example, the compression section may include a main frame, a fixed scroll plate, and a rotary scroll plate. The main frame may be fixed inside the housing. The fixed scroll plate may be attached to the main frame on the opposite side of the drive motor. The rotary scroll plate may be disposed between the main frame and the fixed scroll plate, forming a compression chamber between the rotary scroll plate and the fixed scroll plate. In the vibration damping member, one end of the rigid section may extend from the fixed scroll plate to the opposite side of the main frame. This allows for the rigid section to be formed as long as possible, thereby improving the reliability of the rigid section while damping torsional vibrations of various frequencies.

[0017] For example, a plurality of fixing grooves can be formed on the bottom surface of the fixed scroll plate. These grooves are arranged circumferentially at predetermined intervals and are recessed axially. One end of each of the plurality of rigid parts can be inserted into and engaged with one of the fixing grooves. This stably fixes one end of the rigid part to the vibrating body, thereby improving the reliability of the vibration damping component.

[0018] Specifically, the mass portion can be formed in a ring shape, and a plurality of the rigid portions can extend from one side of the mass portion as a single entity with the mass portion. This reduces the assembly time of the rigid portions and the mass portion, thereby improving the assemblability of the vibration damping component.

[0019] Specifically, the mass portion can be formed in a ring shape, and a plurality of fastening holes can be formed in the mass portion circumferentially at predetermined intervals. The plurality of rigid portions can be fastened to the mass portion through the plurality of fastening holes. Thus, the shapes of the rigid portions and / or the mass portion can be appropriately formed, and the assemblability of these rigid portions and the mass portion can be improved.

[0020] More specifically, the plurality of rigid parts can be formed of a material having a stiffness different from that of the mass parts. This allows for appropriate and proactive handling of torsional vibrations at various frequencies based on the compressor's capacity.

[0021] Furthermore, a discharge cover for accommodating refrigerant discharged from the compression chamber can be provided on one side of the fixed scroll plate, which forms the opposite side of the rotating scroll plate. The mass portion can be located axially further away from the fixed scroll plate than the discharge cover. This allows for a wider muffler space for the discharge cover, a longer length for the rigid portion, and a variety of shapes for the mass portion.

[0022] For example, an oil suction device can be provided on one side of the fixed scroll plate that forms the opposite side of the rotating scroll plate to communicate with the oil supply channel of the rotating shaft. The mass part can surround the oil suction device. Thus, a vibration damping member can be provided in the internal space of the housing, and the increase in housing volume caused by the vibration damping member can be suppressed.

[0023] As another example, the compression section may include a main frame, a fixed scroll plate, and a rotary scroll plate. The main frame may be fixed inside the housing. The fixed scroll plate may be attached to the main frame on the opposite side of the drive motor. The rotary scroll plate may be disposed between the main frame and the fixed scroll plate, forming a compression chamber between the rotary scroll plate and the fixed scroll plate. The rotating shaft may pass through the main frame, the rotary scroll plate, and the fixed scroll plate and be supported by the main frame and the fixed scroll plate. The vibration damping member may be attached to the rotating shaft at a position lower than the fixed scroll plate. Thus, since the vibration damping member is located at the vibration source of torsional vibration, the vibration damping effect can be further improved.

[0024] For example, the vibration damping member may further include a fixing portion for insertion into and engagement with the outer peripheral surface of the rotating shaft. A plurality of such rigid portions may each extend radially from the outer peripheral surface of the fixing portion. This allows the vibration damping member to be integrated with the rotating shaft while minimizing the increase in the length of the housing.

[0025] Specifically, the fixing part, the plurality of rigid parts, and the mass part can be formed as a single unit. This simplifies the assembly time of the vibration damping component, thereby reducing manufacturing costs.

[0026] As another example, the compression section may include a main frame, a fixed scroll plate, and a rotary scroll plate. The main frame may be fixed inside the housing. The fixed scroll plate may be attached to the main frame on the opposite side of the drive motor. The rotary scroll plate may be disposed between the main frame and the fixed scroll plate, forming a compression chamber between the rotary scroll plate and the fixed scroll plate. The vibration damping member may be disposed outside the housing. Thus, the vibration damping member can be easily installed, and its configuration can be varied and appropriately modified.

[0027] For example, a base can be provided on the bottom surface of the housing to support the housing against the compressor mounting surface. A plurality of the rigid portions can extend from the base in the opposite direction to the compressor mounting surface. Thus, the vibration damping member can be installed simply and stably without the need for additional components for fixing the vibration damping member.

[0028] Specifically, the base may include: a first base portion that contacts the bottom surface of the housing; and a plurality of second base portions that extend radially from the first base portion and are supported on the compressor mounting surface. The plurality of rigid portions may each extend axially from the plurality of second base portions. Thus, the mass portion constituting part of the vibration damping member can be separated from and surround the outer peripheral surface of the housing.

[0029] More specifically, each of the plurality of second base portions may have a fastening groove or a fastening hole. One end of each of the plurality of rigid portions may be inserted into and fastened to the fastening groove or the fastening hole. Thus, rigid portions constituting part of the vibration damping member can be easily and stably formed.

[0030] Additionally, a refrigerant suction pipe communicating with the compression chamber can penetrate and be integrated into the housing. The mass portion can be located lower than the refrigerant suction pipe. Thus, a vibration damping member is disposed outside the housing and positioned within the range of the refrigerant suction pipe, which forms part of the compressor, thereby suppressing an increase in the volume of the compressor including the refrigerant suction pipe.

[0031] Utility Model Effect

[0032] In the hermetic compressor of this invention, a vibration damping member is disposed inside or outside the housing. A plurality of rigid parts are arranged circumferentially around a vibrating body at predetermined intervals and are attached to the vibrating body. The mass part can be formed in a ring shape to connect the plurality of rigid parts to each other, or formed in an arc shape so that each of the plurality of rigid parts is independently connected to the mass part. Therefore, even with a drive motor that functions as a rotary motor, the vibration damping member can absorb the torsional vibrations caused by it, thereby effectively reducing the vibration noise of the compressor.

[0033] In the hermetic compressor of this invention, a vibration damping component can be disposed within the internal space of the housing. This dampens the torsional torque generated within the internal space of the housing, thereby preventing the compressor vibration from being transmitted to the outside.

[0034] In the hermetic compressor of this invention, one end of the rigid portion of the vibration damping member extends from the fixed scroll plate toward the opposite side of the main frame. This allows for the rigid portion to be formed as long as possible, thereby improving the reliability of the rigid portion while damping torsional vibrations of various frequencies.

[0035] In the hermetic compressor of this invention, the vibration damping component can be attached to the rotating shaft at a position lower than the fixed scroll plate. Therefore, since the vibration damping component is located at the vibration source of torsional vibration, the vibration damping effect can be further improved.

[0036] In the hermetic compressor of this invention, the vibration damping component can be disposed on the outside of the housing. This allows for easy installation of the vibration damping component and enables its varied and appropriate modification. Attached Figure Description

[0037] Figure 1 This is a perspective view showing the interior of the scroll compressor in this embodiment.

[0038] Figure 2 yes Figure 1 A longitudinal sectional view.

[0039] Figure 3 This is an exploded perspective view showing the vibration damping component of this embodiment.

[0040] Figure 4 This is a front view showing the assembled vibration damping component of this embodiment.

[0041] Figure 5 This is a schematic diagram illustrating the effect of the vibration damping component in this embodiment.

[0042] Figure 6 It is shown in decomposition Figure 1 A perspective view of another embodiment of the vibration damping component.

[0043] Figure 7 yes Figure 6 The assembly main view.

[0044] Figure 8 It is shown in decomposition Figure 1 A perspective view of another embodiment of the vibration damping component.

[0045] Figure 9 This is a schematic diagram illustrating the effect of vibration damping component 8.

[0046] Figure 10 It is shown Figure 1 A perspective view of another embodiment of the vibration damping component.

[0047] Figure 11 yes Figure 10 The main view.

[0048] Figure 12 It is shown in decomposition Figure 10 A three-dimensional view of the vibration damping component.

[0049] Figure 13 It is shown Figure 10 A schematic diagram illustrating the effect of vibration damping components. Detailed Implementation

[0050] The hermetic compressor of this utility model will now be described in detail with reference to the accompanying drawings. In order to clearly define the features of this utility model, descriptions of some constituent elements may be omitted in the following description.

[0051] Additionally, in the following description, "upper side" refers to the direction away from the support surface of the scroll compressor in this embodiment of the invention, that is, the drive unit (electric unit or drive motor) side is the upper side when viewed with the drive unit (electric unit or drive motor) and the compression unit as the center. "Lower side" refers to the direction closer to the support surface, that is, the compression unit side is the lower side when viewed with the drive unit (electric unit or drive motor) and the compression unit as the center.

[0052] Additionally, the term "axial" used in the following description refers to the length direction of the axis of rotation. "Axial" can be understood as the vertical direction. "Radial" refers to the direction intersecting the axis of rotation.

[0053] Furthermore, the following description uses a scroll compressor as an example, specifically a hermetic scroll compressor where the drive unit (electric unit or drive motor) and compression unit are both housed within the casing. However, the same or similar methods can be applied to compressors such as rotary compressors and reciprocating compressors that use a rotary motor as the drive unit.

[0054] Furthermore, the following description uses a lower-compression scroll compressor, where the compressor is located lower than the drive unit (electric motor or drive unit), as an example of a vertical scroll compressor where the electric motor and compressor are arranged along the vertical axis. However, it is clear that the same principles can be applied to horizontal scroll compressors where the drive unit (electric motor or drive unit) and compressor are arranged horizontally, as well as to upper-compression scroll compressors where the compressor is located higher than the drive unit (electric motor or drive unit).

[0055] Furthermore, the following description will use a high-pressure scroll compressor, where the refrigerant suction pipe forming the suction passage is directly connected to the compression section and the refrigerant discharge pipe is connected to the internal space of the casing, and the internal space of the casing forms the discharge pressure, as an example. However, the same principle can be applied to low-pressure scroll compressors where the internal space of the casing forms the suction pressure.

[0056] Figure 1 This is a perspective view showing the interior of the scroll compressor in this embodiment. Figure 2 yes Figure 1 A longitudinal sectional view.

[0057] Reference Figure 1 and Figure 2In this embodiment, the high-pressure, bottom-compression scroll compressor (hereinafter referred to as the scroll compressor) has a drive motor 120 constituting the electric motor in the upper half of the housing 110. Below the drive motor 120, a main frame 130, a fixed scroll plate 140, a rotating scroll plate 150, a discharge cover 160, and a vibration damping member 170 are arranged sequentially. As mentioned above, typically, the drive motor 120 constitutes the electric motor, and the main frame 130, fixed scroll plate 140, rotating scroll plate 150, discharge cover 160, and vibration damping member 170 constitute the compression unit C.

[0058] The drive motor 120, constituting the electric motor unit, is attached to the upper end of the rotating shaft 125 (described later), and the compressor unit C is attached to the lower end of the rotating shaft 125. Thus, the compressor 10 constitutes the aforementioned lower compression type structure, with the compressor unit C connected to the drive motor 120 via the rotating shaft 125 and operating under the rotational force of the drive motor 120. Therefore, the drive motor 120 can be understood as a drive unit that drives the compressor unit C; therefore, the drive motor will be described together with the electric motor unit or the drive unit below.

[0059] Reference Figure 1 and Figure 2 The housing 110 in this embodiment may include a cylindrical outer shell 111, an upper outer shell 112, a lower outer shell 113, and a base 114.

[0060] The cylindrical outer shell 111 is formed into a cylindrical shape with openings at both the top and bottom. The upper outer shell 112 is attached to cover the upper end of the opening of the cylindrical outer shell 111, and the lower outer shell 113 is attached to cover the lower end of the opening of the cylindrical outer shell 111. As a result, the internal space 110a of the shell 110 is sealed, and the sealed internal space 110a of the shell 110 is separated into a lower space S1 and an upper space S2 with reference to the drive motor 120.

[0061] The lower space S1 is a space formed on the lower side of the drive motor 120. The lower space S1 can be further divided into an oil storage space S11 and a discharge space S12 based on the compression section C.

[0062] The oil storage space S11 is a space formed on the lower side of the compression section C, which serves as a space for storing a mixture of oil or liquid refrigerant (hereinafter, used with oil). The discharge space S12 is a space formed between the top surface of the compression section C and the bottom surface of the drive motor 120, which serves as a space for discharging the mixture of refrigerant or oil compressed in the compression section C.

[0063] The upper space S2 is a space formed on the upper side of the drive motor 120, constituting an oil separation space for separating oil from the refrigerant discharged from the compression section C. The refrigerant discharge pipe is connected to the upper space S2.

[0064] The aforementioned drive motor 120 and main frame 130 are inserted into and fixed inside the cylindrical housing 111. Oil recovery channels (not marked) can be formed on the outer peripheral surfaces of the drive motor 120 and the main frame 130 at predetermined intervals from the inner peripheral surface of the cylindrical housing 111.

[0065] A refrigerant suction pipe 115 penetrates and is connected to the side of the cylindrical outer shell 111. Thus, the refrigerant suction pipe 115 radially penetrates and is connected to the cylindrical outer shell 111 constituting the housing 110. The refrigerant suction pipe 115 is L-shaped, with one end penetrating the cylindrical outer shell 111 and directly communicating with the suction port 1421 of the fixed scroll plate 140, which constitutes the compression section C (described later). Therefore, refrigerant can flow into the compression chamber V through the refrigerant suction pipe 115.

[0066] The inner end of the refrigerant discharge pipe 116 penetrates and connects to the internal space 110a of the housing 110 in the upper outer casing 112, specifically, it is formed in the upper space S2 above the drive motor 120 to communicate with it. The refrigerant discharge pipe 116 may be equipped with an oil separation device (not marked) to separate oil from the refrigerant discharged from the housing 110, or a check valve (not marked) to prevent the refrigerant discharged from the housing 110 from flowing back into the housing 110.

[0067] The lower outer casing 113 and the lower half of the cylindrical outer casing 111 together form an oil storage space S11. One end of the oil circulation pipe (not shown) can penetrate radially and be connected to the lower half of the lower outer casing 113.

[0068] The base 114 can be formed as a ring and attached to the bottom surface of the lower outer shell 113, or it can be formed as a plate and attached to the lower end of the opening of the cylindrical outer shell 111. In this embodiment, the base 114 will be described with an example of being formed as a ring and attached to the bottom surface of the lower outer shell 113 as the focus.

[0069] Additionally, the base 114 may include a first base portion 1141 that contacts the bottom surface of the lower housing 113, and a plurality of second base portions 1142 that extend radially from the outer peripheral surface of the first base portion 1141 and are supported on the compressor mounting surface 1. The second base portions 1142 are provided with anti-vibration rubber 1143, thereby enabling the attenuation of compressor vibration while suppressing the transmission of compressor vibration to the compressor mounting surface 1. The base 114 will be described again later in another embodiment.

[0070] Reference Figure 1 and Figure 2 The drive motor 120 in this embodiment includes a stator 121 and a rotor 122. The stator 121 is inserted into and fixed to the inner circumferential surface of the cylindrical outer shell 111, and the rotor 122 is rotatably disposed inside the stator 121.

[0071] The stator core 1211 is formed into a cylindrical shape and is hot-pressed to the inner circumferential surface of the cylindrical outer shell 111. The stator coil 1212 is wound around the stator core 1211 and is electrically connected to an external power supply through a terminal (not shown) that passes through and is connected to the housing 110.

[0072] The rotor 122 includes a rotor core 1221 and a permanent magnet 1222.

[0073] The rotor core 1221 is formed in a cylindrical shape and is rotatably inserted into the stator core 1211 with a predetermined air gap. The permanent magnet 1222 is embedded in the rotor core 1222 along the circumference with a predetermined interval.

[0074] Additionally, the rotating shaft 125 is pressed into and coupled to the center of the rotor core 1221. The cyclone scroll 150, described later, is eccentrically coupled to the upper end of the rotating shaft 125. Thus, the rotational force of the drive motor 120 can be transmitted to the cyclone scroll 150 through the rotating shaft 125.

[0075] A hollow oil supply channel 126 is formed inside the rotating shaft 125. An oil suction device 127 for pumping oil filled in the oil storage space S11 can be connected to the lower end of the rotating shaft 125. Thus, when the rotating shaft 125 rotates, the oil filled in the oil storage space S11 is sucked to the upper end of the rotating shaft 125 through the oil suction device 127 and the oil supply channel 126, thereby lubricating the sliding part.

[0076] As mentioned above, the compression unit C in this embodiment includes a main frame 130, a fixed scroll plate 140, a rotating scroll plate 150, a discharge cover 160, and a vibration damping component 170.

[0077] Reference Figure 1 and Figure 2 In this embodiment, the main frame 130 is disposed below the drive motor 120 and is fixed to the inner wall of the cylindrical outer shell 111 by hot pressing or welding. The main frame 130 includes a frame diameter plate portion 131, a frame side wall portion 132, and a main bearing portion 133.

[0078] The frame diameter plate portion 131 is formed in an annular shape and is disposed on the lower side of the drive motor 120. The frame side wall portion 132 extends in a cylindrical shape from the lower surface edge of the frame diameter plate portion 131, and the outer peripheral surface of the frame side wall portion 132 is fixed to the inner peripheral surface of the cylindrical outer shell 111 by heat pressing or welding. Thus, the oil storage space S11 and the discharge space S12 constituting the lower space S1 of the housing 110 are separated by the frame diameter plate portion 131 and the frame side wall portion 132.

[0079] The main bearing portion 133 protrudes upward toward the drive motor 120 from the top surface of the center portion of the frame diameter plate portion 131. A cylindrical main bearing hole 1331 is formed by passing through the main bearing portion 133 axially, and the rotating shaft 125 is inserted into the main bearing hole 1331 and receives radial support.

[0080] Reference Figure 1 and Figure 2 The fixed scroll plate 140 in this embodiment may include a fixed diameter plate portion 141, a fixed side wall portion 142, a secondary bearing portion 143, and a fixed scroll portion 144.

[0081] The fixed diameter plate portion 141 can be formed as a circular plate with a plurality of recessed portions on its outer peripheral surface, and a secondary bearing hole 1431, which constitutes the secondary bearing portion 143 described later, is formed through the center in a vertical direction. Discharge ports 1411 and 1412 can be formed around the secondary bearing hole 1431, and the discharge ports 1411 and 1412 communicate with the compression chamber V, so that the compressed refrigerant is discharged into the silencer space 160a of the discharge cover 160 described later.

[0082] Although not shown, only one discharge port may be formed to communicate with both the first compression chamber V1 and the second compression chamber V2, which will be described later. However, as shown in this embodiment, the first discharge port (unlabeled) may communicate with the first compression chamber V1, and the second discharge port (unlabeled) may communicate with the second compression chamber V2. Thus, the refrigerant compressed in the first compression chamber V1 and the second compression chamber V2 can be discharged independently from their respective discharge ports.

[0083] Furthermore, on the bottom surface of the fixed diameter plate portion 141, a plurality of fixing grooves 141a are formed circumferentially at predetermined intervals, and the rigid portion 171 of the vibration damping member 170, described later, can be inserted into and engaged with these fixing grooves 141a respectively. These fixing grooves 141a will be described again later along with the vibration damping member 170.

[0084] The fixed sidewall portion 142 can extend from the top edge of the fixed diameter plate portion 141 in the vertical direction to form a ring. The fixed sidewall portion 142 can be combined to form a frame sidewall portion 132 facing the main frame 130 in the vertical direction.

[0085] A suction port 1421 is formed in the fixed sidewall portion 142, extending radially through the fixed sidewall portion 142. As described above, the end of the refrigerant suction pipe 115, which penetrates the cylindrical outer shell 111, is inserted into and connected to the suction port 1421. Thus, refrigerant can be directly drawn into the compression chamber V through the refrigerant suction pipe 115.

[0086] The secondary bearing portion 143 extends axially from the center of the fixed diameter plate portion 141 toward the ejector cover 160. A cylindrical secondary bearing hole 1431 is formed axially through the center of the secondary bearing portion 143, and the lower end of the rotating shaft 125 can be inserted into the secondary bearing hole 1431 to obtain radial support.

[0087] The fixed scroll portion 144 extends axially from the top surface of the fixed diameter plate portion 141 toward the rotary scroll disk 150. The fixed scroll portion 144 engages with the rotary scroll portion 152, which will be described later, to form the compression chamber V. The fixed scroll portion 144 will be described later together with the rotary scroll portion 152.

[0088] Reference Figure 1 and Figure 2 The vortex disk 150 of this embodiment includes a vortex diameter plate portion 151, a vortex portion 152, and a rotation shaft connection portion 153.

[0089] The rotary diameter plate portion 151 is formed in the shape of a circular plate and is housed in the main frame 130. The top surface of the rotary diameter plate portion 151 can be axially supported in the main frame 130 through a back pressure sealing member (not marked).

[0090] The swirling scroll portion 152 extends from the bottom surface of the swirling diameter plate portion 151 toward the fixed scroll disk 140. The swirling scroll portion 152 engages with the fixed scroll portion 144 to form the compression chamber V.

[0091] The spiral scroll portion 152 can be formed together with the fixed scroll portion 144 in an involute shape. However, the spiral scroll portion 152 and the fixed scroll portion 144 can be formed in various shapes other than involute.

[0092] For example, the swirling scroll 152 has the shape of a plurality of circular arcs with different diameters and origins, and the outermost curve can be formed into a roughly elliptical shape with a major axis and a minor axis. This can also be formed in the fixed scroll 144.

[0093] The inner end of the swirling scroll portion 152 can be formed at the central part of the swirling diameter plate portion 151, and the rotating shaft joint portion 153 can be formed by passing through the central part of the swirling diameter plate portion 151 axially.

[0094] The eccentric portion (not marked) of the rotating shaft 125 is rotatably inserted into and engaged with the rotating shaft engagement portion 153. Thus, the outer periphery of the rotating shaft engagement portion 153 is connected to the swirling scroll portion 152, thereby forming the compression chamber V together with the fixed scroll portion 144 during the compression process.

[0095] The rotating shaft joint 153 can be formed on the same plane as the swirling scroll portion 152 at an overlapping height. That is, the rotating shaft joint 153 can be positioned at the overlapping height of the eccentric portion (not marked) of the rotating shaft 125 and the swirling scroll portion 152 on the same plane. As a result, the repulsive force and compressive force of the refrigerant are applied to the same plane based on the swirling diameter plate portion 151 and cancel each other out, thereby suppressing the tilting of the swirling scroll disk 150 caused by the action of the compressive force and the repulsive force.

[0096] Reference Figure 1 and Figure 2 In this embodiment, the discharge cover 160 is attached to the bottom surface of the fixed scroll plate 140, and a muffler space 160a is formed inside the discharge cover 160 to accommodate the discharge port of the fixed scroll plate 140. The muffler space is separated from the oil storage space S11 of the housing and is connected to the discharge space S12 between the main frame 130 and the drive motor 120 through a discharge channel (not marked) that passes through the fixed scroll plate 140 and the main frame 130.

[0097] Specifically, the outer diameter of the portion constituting the muffler space of the discharge cap 160 can be formed to be less than or equal to the outer diameter of the fixed scroll plate 140. For example, when the outer diameter of the discharge cap 160 is less than the outer diameter of the fixed scroll plate 140, the rigid portion 171 of the vibration damping member 170 (described later) can be attached to the fixed scroll plate 140 at a position further outward than the outer peripheral surface of the discharge cap 160. On the other hand, when the outer diameter of the discharge cap 160 is formed to be the same as the outer diameter of the fixed scroll plate 140, a rigid portion receiving groove (not marked) for accommodating the rigid portion 171 of the vibration damping member 170 can be recessed into the outer peripheral surface of the discharge cap 160. In this embodiment, an example is shown where the outer diameter of the discharge cap 160 is formed to be less than the outer diameter of the fixed scroll plate 140, for example, less than the diameter of the virtual circle inside the fixing groove 141a that connects and fastens the rigid portion 171 of the vibration damping member 170.

[0098] On the other hand, refer to Figure 1 and Figure 2 The vibration damping member 170 in this embodiment includes a plurality of stiffness portions 171 and mass portions 172.

[0099] A plurality of rigid portions 171 are formed in the shape of thin rods, spaced circumferentially at predetermined intervals, and arranged in a ring to connect the plurality of rigid portions 171 to each other. Thus, the rigid portions 171 constituting the upper end of the vibration damping member 170 are fixed to the fixed scroll plate 140, while the mass portion 172 constituting the lower end of the vibration damping member 170 is disposed on the underside of the discharge cover 160, thereby damping torsional vibrations transmitted along the rotation axis 125. The vibration damping member 170 of this embodiment will be described again later.

[0100] Unspecified markings in the attached diagram indicate that 117 is a gas-liquid separator, 1271 is an oil supply pipe, 1272 is an oil supply filter, 180 is a cross ring, and 190 is a flow path guide for separating the discharged refrigerant and the recovered oil.

[0101] The operation of the scroll compressor in this embodiment, as described above, is as follows.

[0102] That is, if power is applied to the drive motor 120, rotational force is generated in the rotor 122 and the rotating shaft 125 and they rotate. The eccentrically coupled rotary scroll 150 with the rotating shaft 125 rotates relative to the fixed scroll 140 using the cross ring 180.

[0103] Therefore, the volume of the compression chamber V gradually decreases as it moves from the outside to the inside. The refrigerant is then drawn into the compression chamber V through the refrigerant suction pipe 115 and compressed, and then discharged through the discharge ports 1411 and 1412 into the silencer space 160a of the discharge cover 160.

[0104] The refrigerant then passes through the muffler space 160a of the discharge cap 160 and moves to the discharge space S12 between the main frame 130 and the drive motor 120 via the discharge hole (not marked) of the fixed scroll plate 140. Furthermore, the refrigerant passes through the drive motor 120 and moves to the upper space S2 of the housing 110 formed on the upper side of the drive motor 120.

[0105] The refrigerant that moves to the upper space S2 is separated into refrigerant and oil in the upper space S2. The refrigerant separated in the upper space is discharged to the outside of the housing 110 through the refrigerant discharge pipe 116, while the oil separated from the refrigerant in the upper space S2 is recovered into the oil storage space S11 of the housing 110.

[0106] The oil is supplied to the various bearing surfaces (unmarked) and the compression chamber V through the oil supply channel 126 of the rotating shaft 125. The following series of processes is repeated: the oil supplied to the bearing surfaces and the compression chamber V is discharged together with the refrigerant to the discharge cover 160 and is recovered.

[0107] On the other hand, as mentioned above, during the operation of the compressor, the rotating shaft 125 transmits the rotational force of the drive motor 120, which is a rotary motor, to the compression section and generates torsional vibration. This torsional vibration is transmitted to the housing 110 through the compression section C, which may cause compressor vibration.

[0108] Therefore, in this embodiment, since a vibration damping member 170 constituting a dynamic vibration absorber is provided in the internal space 110a of the housing 110, the torsional vibration transmitted through the rotating shaft 125 can be attenuated.

[0109] Figure 3 This is an exploded perspective view showing the vibration damping component of this embodiment. Figure 4 This is a front view showing the assembled vibration damping component of this embodiment. Figure 5 This is a schematic diagram illustrating the effect of the vibration damping component in this embodiment.

[0110] Reference Figure 3 and Figure 4 As described above, the vibration damping member 170 of this embodiment includes a plurality of rigid parts 171 and mass parts 172. The plurality of rigid parts 171 can be inserted into and engaged with fixing grooves 141a provided on the bottom surface of the fixed scroll plate 140. For example, one end of the plurality of rigid parts 171 can be pressed into and engaged with the fixing grooves 141a of the fixed scroll plate 140. Thus, the plurality of rigid parts 171 can extend axially from the bottom surface of the fixed scroll plate 140 toward the bottom surface of the lower outer casing 113.

[0111] Specifically, the plurality of rigid portions 171 can be formed in the shape of thin rods and have a circular cross-section. In this case, each of the plurality of rigid portions 171 can be formed with a length greater than its diameter. Thus, the plurality of rigid portions 171 have sufficient elasticity to effectively dampen torsional vibrations.

[0112] Although not shown, each of the plurality of rigid portions 171 may also be formed with a non-circular cross-sectional shape. For example, each of the plurality of rigid portions 171 may also be formed with an arc-shaped cross-sectional shape. In this case, each of the plurality of rigid portions 171 may also be formed with an axial length less than or equal to the circumferential diameter. Thus, the plurality of rigid portions 171 have sufficient rigidity, thereby enabling a reduction in the number of rigid portions 171.

[0113] Furthermore, the lower ends of the plurality of rigid portions 171 can extend to the lower side of the discharge cover 160, reaching a position higher than the lower end of the oil suction unit 127. In other words, the plurality of rigid portions 171 can be configured to surround the oil supply filter 1272 constituting the oil suction unit 127, and the lower end of each rigid portion 171 can extend only to a position radially overlapping with the oil suction unit 127. Thus, an increase in the compressor's size can be prevented by suppressing excessive elongation of the plurality of rigid portions 171.

[0114] Furthermore, the plurality of rigid portions 171 can have the same stiffness. For example, the plurality of rigid portions 171 can be formed of the same material and have the same specifications. Thus, torsional vibrations are absorbed equally by the plurality of rigid portions 171, thereby stably damping the torsional vibrations transmitted through the rotating shaft 125.

[0115] On the other hand, as mentioned above, the mass portion 172 in this embodiment can be formed as a ring, and its upper side facing the fixed scroll plate 140 can be connected to the lower ends of a plurality of rigid portions 171. For example, the mass portion 172 can be formed as a ring, surrounding the oil suction device 127 on its lower side, which is lower than the bottom surface of the discharge cap 160.

[0116] In other words, the mass portion 172 can be formed to be larger than the outer diameter of the discharge cap 160 and / or the outer diameter of the oil suction device 127 when projected axially, and overlaps radially with the oil suction device 127 on the lower side of the discharge cap 160. As a result, it is possible to provide a vibration damping member 170 in the internal space 110a of the housing 110 while maintaining the axial length of the housing 110.

[0117] Although not shown, the mass portion 172 may also be formed at a position radially overlapping with the discharge cap 160. In this case, the vibration damping member 170 may be configured to be higher than the oil level in the oil reservoir. Thus, even if the vibration damping member 170 vibrates at the same frequency as the vibrator, it will not affect the oil in the oil reservoir, thereby suppressing the generation of bubbles caused by the vibration of the vibration damping member 170.

[0118] Furthermore, the mass section 172 can be formed to have the same cross-sectional area along the circumference, or it can be formed to have a plurality of cross-sectional areas along the circumference. This embodiment shows an example of the mass section 172 having the same cross-sectional area along the circumference.

[0119] For example, the mass portion 172 can be formed as a ring with a circumferential cross-sectional area greater than or equal to the longitudinal cross-sectional area of ​​each rigid portion 171. Thus, the vibration damping member 170 can absorb and attenuate torsional vibrations transmitted along the rotation axis 125.

[0120] Alternatively, the mass portion 172 may be formed of the same material as the rigid portion 171, but depending on the circumstances, it may also be formed of a different material from the rigid portion 171. This embodiment shows an example where the mass portion 172 is formed of the same material as the rigid portion 171. Therefore, the mass portion 172 can be easily connected to the rigid portion 171.

[0121] For example, the mass portion 172 and the rigid portion 171 can be formed of the same ferrous material and can extend as a single unit. In other words, a plurality of rigid portions 171 can each extend axially as a single unit from one side (top surface) of the mass portion 172. In this case, it is not necessary to separately attach the mass portion 172 to the rigid portion 171, thereby correspondingly improving the assemblability between the rigid portion 171 and the mass portion 172.

[0122] As described above, a vibration damping member 170 constituting a dynamic vibration absorber is provided in the internal space 110a of the housing 110. Therefore, even if a drive motor 120, which serves as a rotary motor, is provided in the internal space 110a of the housing 110, the vibration damping member 170 can absorb the torsional vibration caused by it, thereby effectively reducing the vibration noise of the compressor. (Ref) Figure 5 )

[0123] Furthermore, the vibration damping member 170 constituting the dynamic vibration absorber is provided on the lower side of the discharge cover 160, which is the lower space, and can be configured to surround the oil suction device 127 that communicates with the oil supply passage 126 of the rotating shaft 125. Thus, by providing the vibration damping member 170 in the internal space 110a of the housing 110 without excessively increasing the size of the housing 110, it is possible to suppress the increase in the size of the compressor caused by the provision of the vibration damping member 170.

[0124] In addition, the vibration damping member 170 constituting the dynamic vibration absorber is formed by a plurality of rigid parts 171 in the shape of a rod and a ring-shaped mass part 172. Since the plurality of rigid parts 171 and mass part 172 are formed as a single unit, the assembly of the vibration damping member 170 can be simplified.

[0125] Although not shown, the mass portion 172 can also be formed as a plurality of arc shapes. In this case, the plurality of mass portions 172 can also be formed in a one-to-one matching manner with the plurality of rigid portions 171. In this case, it is possible to attenuate vibrations in various frequency bands while improving the assemblability of the vibration damping member 170.

[0126] On the other hand, another embodiment of the vibration damping component is as follows.

[0127] That is, in the aforementioned embodiments, the plurality of rigid parts and mass parts are formed as a single unit, but depending on the circumstances, the plurality of rigid parts may also be assembled later into the mass part.

[0128] Figure 6 It is shown in decomposition Figure 1 A perspective view of another embodiment of the vibration damping component. Figure 7 yes Figure 6 The assembly main view.

[0129] Reference Figure 6 and Figure 7The basic structure and function of the scroll compressor in this embodiment are the same as those in the previous embodiments. For example, the scroll compressor in this embodiment has a housing 110, a drive motor 120 which is a rotary motor constituting the electric unit, and a compression section C including a fixed scroll plate 140, a rotating scroll plate 150, a discharge cover 160, and a vibration damping member 170. The basic structure and function of the housing 110, the drive motor 120, and the compression section C are the same as those in the previous embodiments.

[0130] However, as mentioned above Figure 3 Unlike other embodiments, in this embodiment, the rigid portion 171 and the mass portion 172 constituting the vibration damping member 170 can be assembled later. For example, the mass portion 172 can be formed as an annular shape, with a plurality of fastening holes and / or fastening grooves (hereinafter, fastening holes will be described as an example) 172a spaced circumferentially at predetermined intervals. In other words, a plurality of fastening holes 172a can be formed in the mass portion 172, and these fastening holes 172a can be formed on the same axis as the fixing groove 141a of the fixed scroll plate 140.

[0131] As mentioned above Figure 3 As shown in the embodiment, the rigid portion 171 can be formed in the shape of a thin round rod, and the outer diameter of the rigid portion 171 is larger than the inner diameter of the fastening hole 172a. In this case, a fastening protrusion 171a that inserts into or penetrates the fastening hole 172a can be formed in a stepped manner at the lower end of the rigid portion 171 that is fastened to the mass portion 172. For example, the length of the fastening protrusion 171a is formed to be longer than the length of the fastening hole 172a, so that the fastening protrusion 171a can be fastened on the other side (bottom surface) of the mass portion 172 using a fastening nut 175.

[0132] Additionally, as described in the aforementioned embodiments, the upper end of the rigid portion 171 can also be pressed into or fastened to the fixing groove 141a of the fixed scroll plate 140. This embodiment shows an example in which threads are formed on the upper end of the rigid portion 171 and the fixing groove 141a of the fixed scroll plate 140, and fastened to each other.

[0133] As described above, when the rigid part 171 and the mass part 172 are assembled later, the rigid part 171 and the mass part 172 can be formed of the same material. However, depending on the situation, the rigid part 171 and the mass part 172 can also be formed of different materials. For example, the rigid part 171 can be formed of a material with a greater rigidity per unit area than the mass part 172, and the mass part 172 can be formed of a material with a greater mass per unit area than the rigid part 171. On the other hand, depending on the situation, the opposite can also be true. This allows for effective attenuation of torsional vibrations in various frequency bands, enabling appropriate modification and application according to the compressor capacity.

[0134] Although not shown, it is also possible that a plurality of rigid portions 171 constituting part of the vibration damping member 170 extend as a single unit from the fixed scroll plate 140, and a mass portion 172 constituting another part of the vibration damping member 170 is fastened to the lower end of the plurality of rigid portions 171. In this case, the structure in which the plurality of rigid portions 171 and the mass portion 172 are fastened can be the same as described above. Figure 3 The embodiments are the same.

[0135] On the other hand, another embodiment of the vibration damping component is as follows.

[0136] That is, in the aforementioned embodiments, the vibration damping component is assembled on a fixed scroll disk, but depending on the circumstances, the vibration damping component may also be combined with a rotating shaft.

[0137] Figure 8 It is shown in decomposition Figure 1 A perspective view of another embodiment of the vibration damping component. Figure 9 It is shown Figure 8 A schematic diagram illustrating the effect of vibration damping components.

[0138] Refer again Figure 2 The basic structure and function of the scroll compressor in this embodiment are the same as those in the previous embodiments. For example, the scroll compressor in this embodiment has a housing 110, a drive motor 120 which is a rotary motor constituting the electric unit, and a compression section C including a fixed scroll plate 140, a rotating scroll plate 150, a discharge cover 160, and a vibration damping member 170. The basic structure and function of the housing 110, the drive motor 120, and the compression section C are the same as those in the previous embodiments.

[0139] However, as Figure 8 and Figure 9 As shown, unlike the previous embodiments, in this embodiment, the vibration damping member 170 can also be directly coupled to the rotating shaft 125. For example, the lower end of the rotating shaft 125 can extend long, protruding from the lower end of the secondary bearing portion 143, and the vibration damping member 170 can be fastened to the lower end of the rotating shaft 125. In this case, the vibration damping member 170 can be fastened to the rotating shaft 125 between the fixed scroll plate 140 and the oil suction device 127, for example, between the secondary bearing portion 143 and the oil supply pipe 1271 constituting the oil suction device 127.

[0140] Specifically, the vibration damping member 170 may include a plurality of rigid portions 171, a mass portion 172, and a fixing portion 173. Unlike the previous embodiments, the plurality of rigid portions 171 may extend radially and may be integrally formed with the inner circumferential surface of the mass portion 172 and the outer circumferential surface of the fixing portion 173. The mass portion 172 may be formed as a ring, with its inner circumferential surface connected to the outer ends of the plurality of rigid portions 171 respectively. The fixing portion 173 may be formed as a ring, with its outer circumferential surface connected to the inner ends of the plurality of rigid portions 171 respectively. The fixing portion 173 may be pressed into the outer circumferential surface of the rotating shaft 125, or it may be subsequently assembled to the outer circumferential surface of the rotating shaft 125. This embodiment shows an example of the fixing portion 173 being pressed into the outer circumferential surface of the rotating shaft 125.

[0141] In this case, the cross-sectional area of ​​each rigid part 171 can be made smaller than or equal to the cross-sectional area of ​​the mass part 172. As a result, torsional vibrations transmitted through the rotating shaft 125 can be effectively attenuated.

[0142] Furthermore, the cross-sectional area of ​​the fixed part 173 can be formed to be less than or equal to the cross-sectional area of ​​the mass part 172. This minimizes the weight of the portion of the vibration damping member 170 that is not related to vibration damping, thereby suppressing excessive weight increase of the vibration damping member 170, which constitutes part of the rotating body, and thus minimizing the reduction in compressor efficiency caused by the vibration damping member 170.

[0143] As described above, when the vibration damping member 170 is integrated with the rotating shaft 125, the vibration damping member 170 is directly integrated with the rotating shaft 125, which is the source of torsional vibration, thereby further effectively damping torsional vibration. This further reduces compressor vibration. (Ref) Figure 9 )

[0144] On the other hand, another embodiment of the vibration damping component is as follows.

[0145] That is, in the aforementioned embodiments, the vibration damping member is disposed inside the housing, but depending on the circumstances, the vibration damping member may also be disposed outside the housing.

[0146] Figure 10 It is shown Figure 1 A perspective view of another embodiment of the vibration damping component. Figure 11 yes Figure 10 The main view, Figure 12 It is shown in decomposition Figure 10 A three-dimensional diagram of the vibration damping component. Figure 13 It is shown Figure 10 A schematic diagram illustrating the effect of vibration damping components.

[0147] Refer again Figure 2The basic structure and function of the scroll compressor in this embodiment are the same as those in the previous embodiments. For example, the scroll compressor in this embodiment has a housing 110, a drive motor 120 which is a rotary motor constituting an electric unit, and a compression section C including a fixed scroll plate 140, a rotating scroll plate 150, and a discharge cover 160. The basic structure and function of the housing 110, the drive motor 120, and the compression section C are the same as those in the previous embodiments.

[0148] However, as Figures 10 to 12 As shown, unlike the previous embodiments, in this embodiment, the vibration damping member 170 can be disposed on the outside of the housing 110. For example, the vibration damping member 170 can be disposed on the base 114 that forms part of the housing 110.

[0149] Specifically, the vibration damping member 170 includes a plurality of rigid portions 171 and a mass portion 172. The plurality of rigid portions 171 extend axially upward from each of the second base portions 1142 that form part of the base 114. Thus, the mass portion 172 is formed in annular shape and is configured to surround the cylindrical outer shell 111 that forms part of the housing 110 at a predetermined interval.

[0150] For example, a refrigerant suction pipe 115 can be connected to one side of the cylindrical outer shell 111, and the mass portion 172 can be formed in an annular shape, surrounding the cylindrical outer shell 111 and positioned lower than the refrigerant suction pipe 115. In other words, in axial projection, the outer peripheral surface of the mass portion 172 can be located within the range of the refrigerant suction pipe 115. This suppresses the increase in the volume of the compressor including the vibration damping member 170 caused by an excessively large outer diameter of the vibration damping member 170.

[0151] Furthermore, the plurality of rigid parts 171 and mass parts 172 can be as described above. Figure 3 As in the embodiments, it is formed as a single entity or as... Figure 6 The components are assembled as in the previous embodiment. This embodiment shows an example of assembling a plurality of rigid parts 171 and mass parts 172 after assembly.

[0152] Alternatively, the plurality of rigid portions 171 can be pressed into the second base portion 1142 or fastened separately using fastening nuts 175. This embodiment shows an example of fastening each rigid portion 171 to the second base portion 1142 using fastening nuts 175.

[0153] In this case, a stepped structure is formed at the lower end of each rigid part 171, as shown in the figure. Figure 6The fastening protrusion 171a, as in the embodiment, allows the fastening protrusion 171a to be fastened to the bottom surface of the second base portion 1142 by means of a fastening nut 175 when the fastening protrusion 171a is inserted into the fastening hole 1142a provided in the second base portion 1142.

[0154] Furthermore, in this case, the plurality of rigid portions 171 and mass portions 172 can be formed of the same material or of different materials. In other words, the rigid portion 171 can be formed of a material with greater or less rigidity than the mass portion 172, and the mass portion 172 can be formed of a material that is heavier or lighter than the rigid portion 171.

[0155] As described above, when the vibration damping member 170 is disposed outside the housing 110, the vibration damping member 170 absorbs and dampens torsional vibrations transmitted to the housing 110. (Ref) Figure 13 )

[0156] In this case, since the vibration damping member 170 is disposed on the outside of the housing 110, the specifications and / or shape of the vibration damping member 170 can be varied. Furthermore, when the vibration damping member 170 is disposed on the base 114, additional components for fixing the vibration damping member 170 can be eliminated, thereby enabling the vibration damping member 170 constituting the dynamic vibration absorber to be disposed on the outside of the housing 110 while minimizing the number of components.

[0157] Although not shown, vibration damping members 170 may also be provided on the outer peripheral surface of housing 110, for example, the outer peripheral surface of cylindrical housing 111 and / or upper housing 112 and / or lower housing 113. In this case, a plurality of rigid portions 171 may also be directly connected to the outer peripheral surface of housing 110 and extend radially, or as... Figure 8 As shown in the embodiment, with the additional fixing part 173 attached to the housing 110, a plurality of rigid parts 171 extend radially from the outer peripheral surface of the fixing part 173.

[0158] On the other hand, the aforementioned embodiments were described using a scroll compressor as an example, but they can also be applied to compressors with an electric motor that functions as a rotary motor.

Claims

1. A hermetic compressor, wherein, include: case; A drive motor, located inside the housing, generates rotational force. The compression unit is disposed inside the housing and operates under the rotational force generated by the drive motor to compress the refrigerant; A rotating shaft connects the drive motor and the compression unit, transmitting the rotational force of the drive motor to the compression unit; as well as Vibration damping components are disposed inside or outside the housing to dampen vibrations; The vibration damping component includes: A plurality of rigid parts are arranged circumferentially around the vibrating body at predetermined intervals and are attached to the vibrating body; as well as The mass portion is formed in a ring shape to connect a plurality of the rigid portions to each other, or formed in an arc shape so that each of the plurality of rigid portions is independently connected to the mass portion.

2. The hermetic compressor according to claim 1, wherein, The compression section includes: The main frame is fixed inside the housing. A fixed scroll plate is attached to the main frame on the opposite side of the drive motor; and A rotary scroll plate is disposed between the main frame and the fixed scroll plate, forming a compression chamber between the rotary scroll plate and the fixed scroll plate; The vibration damping component is disposed in the internal space of the housing.

3. The hermetic compressor according to claim 2, wherein, The compression section is located on the lower side of the drive motor; The vibration damping member is disposed on the opposite side of the side of the compression section facing the drive motor.

4. The hermetic compressor according to claim 1, wherein, The compression section includes: The main frame is fixed inside the housing. A fixed scroll plate is attached to the main frame on the opposite side of the drive motor; and A rotary scroll plate is disposed between the main frame and the fixed scroll plate, forming a compression chamber between the rotary scroll plate and the fixed scroll plate; In the vibration damping member, one end of the rigid part extends from the fixed scroll disk to the opposite side of the main frame.

5. The hermetic compressor according to claim 4, wherein, A plurality of fixing grooves are formed on the bottom surface of the fixed scroll disk. The plurality of fixing grooves are arranged circumferentially at predetermined intervals and are recessed axially. One end of each of the plurality of rigid parts is inserted into and engaged with the plurality of the fixing slots.

6. The hermetic compressor according to claim 5, wherein, The mass portion is formed in a ring shape; A plurality of the rigid portions extend from one side of the mass portion as a single entity with the mass portion.

7. The hermetic compressor according to claim 5, wherein, The mass part is formed in a ring shape, and a plurality of fastening holes are formed on the mass part along the circumferential direction at predetermined intervals; The plurality of rigid portions are respectively fastened to the mass portion through the plurality of fastening holes.

8. The hermetic compressor according to claim 7, wherein, The plurality of rigid portions are formed of a material having a rigidity different from that of the mass portions.

9. The hermetic compressor according to claim 4, wherein, A discharge cap for receiving refrigerant discharged from the compression chamber is provided on one side of the fixed scroll disk that forms the opposite side of the swirling scroll disk. The mass part is located axially further away from the fixed scroll plate than the discharge cover.

10. The hermetic compressor according to claim 4, wherein, An oil suction device is provided on one side of the opposite side of the rotating scroll in the fixed scroll to communicate with the oil supply channel of the rotating shaft. The mass portion surrounds the oil suction device.

11. The hermetic compressor according to claim 1, wherein, The compression section includes: The main frame is fixed inside the housing. A fixed scroll plate is attached to the main frame on the opposite side of the drive motor; and A rotary scroll plate is disposed between the main frame and the fixed scroll plate, forming a compression chamber between the rotary scroll plate and the fixed scroll plate; The rotating shaft passes through the main frame, the swirling scroll disk, and the fixed scroll disk, and is supported by the main frame and the fixed scroll disk; The vibration damping component is attached to the rotating shaft at a position lower than the fixed scroll plate.

12. The hermetic compressor according to claim 11, wherein, The vibration damping component also includes a fixing part for the rotating shaft to be inserted into and engaged with the outer peripheral surface of the rotating shaft; Each of the plurality of rigid portions extends radially from the outer peripheral surface of the fixed portion.

13. The hermetic compressor according to claim 12, wherein, The fixed part, the plurality of the rigid parts, and the mass part are formed as a single unit.

14. The hermetic compressor according to claim 1, wherein, The compression section includes: The main frame is fixed inside the housing. A fixed scroll plate is attached to the main frame on the opposite side of the drive motor; and A rotary scroll plate is disposed between the main frame and the fixed scroll plate, forming a compression chamber between the rotary scroll plate and the fixed scroll plate; The vibration damping component is disposed on the outside of the housing.

15. The hermetic compressor according to claim 14, wherein, A base is provided on the bottom surface of the housing to support the housing on the compressor mounting surface; A plurality of the rigid portions extend from the base in the opposite direction to the compressor mounting surface.

16. The hermetic compressor according to claim 15, wherein, The base includes: The first base portion is in contact with the bottom surface of the housing; and A plurality of second base portions, extending radially from the first base portion, are supported on the compressor mounting surface; The plurality of rigid portions extend axially from the plurality of second base portions.

17. The hermetic compressor according to claim 16, wherein, Each of the plurality of second base portions has a fastening groove or a fastening hole; One end of each of the plurality of rigid parts is inserted into and secured to the fastening groove or the fastening hole.

18. The hermetic compressor according to claim 14, wherein, A refrigerant suction pipe, which communicates with the compression chamber, passes through and is connected to the housing; The mass unit is located lower than the refrigerant suction pipe.

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