KR102734369B1 - Intake check valve and compressor having the same - Google Patents

Abstract

The present invention relates to a suction check valve and a compressor including the same, and can be configured to include a core body disposed between an intake port and an intake chamber of a compressor, a spring body disposed along a portion of the periphery of the core body inside the intake port, and a protrusion block disposed on the core body so that the core body moves eccentrically with respect to the central axis of the intake port. According to the present invention, there is an effect of reducing suction pulsation by making the vibration (excitation) frequency of an engine or a pulley and the wave frequency of a suctioned fluid mismatched through a valve that operates eccentrically to the intake port of the compressor.

Description

{INTAKE CHECK VALVE AND COMPRESSOR HAVING THE SAME}

The present invention relates to a suction check valve and a compressor including the same, and more specifically, to a valve and compressor that reduce suction pulsation by making the vibration (excitation) frequency of an engine or a pulley and the wave frequency of a suctioned fluid mismatched through a valve that is operated eccentrically to the suction port of the compressor.

In general, compressors that play a role in compressing refrigerant in vehicle cooling systems have been developed in various forms. These compressors include reciprocating compressors that compress the refrigerant by reciprocating motion, and rotary compressors that compress the refrigerant by rotating motion.

Here, reciprocating compressors include a crank type that transmits the driving force of a driving source to multiple pistons using a crank, a swash plate type that transmits the driving force to a rotating shaft on which a swash plate is installed, and a wobble plate type that uses a wobble plate, and rotary compressors include a vane rotary type that uses a rotating rotary shaft and vanes, and a scroll type that uses an orbiting scroll and a fixed scroll.

Meanwhile, there are two types of swash plate compressors: a fixed capacity type in which the installation angle of the swash plate is fixed, and a variable capacity type in which the discharge capacity can be changed by changing the inclination angle of the swash plate.

Figure 1 illustrates the configuration of one form of a typical swash plate compressor. Hereinafter, a schematic configuration of a swash plate compressor will be described with reference to Figure 1.

A swash plate type compressor (10, hereinafter referred to as a 'compressor') is provided with a cylinder block (20) that forms part of the exterior and skeleton of the compressor (10). At this time, a center bore (21) is formed through the center of the cylinder block (20), and a rotation shaft (60) is rotatably installed in this center bore (21).

A plurality of cylinder bores (22) are formed through the cylinder block (20) to radially surround the center bore (21), and a piston (70) is installed inside the cylinder bore (22) so as to be able to make a linear reciprocating motion. At this time, the piston (70) is formed in a cylindrical shape, and the cylinder bore (22) is a cylindrical space corresponding thereto, and the refrigerant inside the cylinder bore (22) is compressed by the reciprocating motion of the piston (70).

A front housing (30) is coupled to the front of the cylinder block (20). The front housing (30) has a surface facing the cylinder block (20) recessed to form a crankcase (31) inside together with the cylinder block (20).

A pulley (32) that is connected to an external power source (not shown) such as an engine is rotatably installed at the front of the front housing (30), and a rotation shaft (60) rotates in conjunction with the rotation of the pulley (32).

A rear housing (40) is coupled to the rear of the cylinder block (20). At this time, a discharge chamber (41) is formed along a position adjacent to the outer peripheral edge of the rear housing (40) so as to be selectively connected to the cylinder bore (22).

And the suction port (43) and the suction chamber (42) where the suctioned fluid stays for a while can be installed in the lower housing (40) area, but other locations are also possible depending on the type of compressor (100). Therefore, it is not necessarily limited to the above location.

At this time, a valve plate (50) is interposed between the cylinder block (20) and the rear housing (40), and the discharge chamber (41) is connected to the cylinder bore (22) through a discharge port (51) formed in the valve plate (50).

In addition, a swash plate (61) is installed on the rotating shaft (60), and is connected to each piston (70) by a shoe (62) provided along the edge of the swash plate (61), and the piston (70) moves linearly and reciprocally within the cylinder bore (22) by the rotation of the swash plate (61).

At this time, the angle of the swash plate (61) with respect to the rotating shaft (60) is installed so that the refrigerant discharge amount of the compressor (10) can be adjusted. To this end, the opening of the flow path connecting the discharge chamber (41) and the crank chamber (31) is adjusted by a pressure regulating valve (not shown).

The conventional swash plate type compressor having the above configuration has a so-called radially symmetrical structure in which a plurality of cylinder bores (22) formed in a cylinder block (20) are arranged radially spaced apart from each other around a rotation axis (60).

In Fig. 2, a suction check valve (80) is placed on a conventional rear housing (40) so as to be connected to a suction port (43) and a suction chamber (42). In the conventional suction check valve (80), a press-fit portion (81) made of a metal material is fixed by being forcibly fitted into a suction port (43), and a valve case (82) is placed between the suction port (43) and the suction chamber (42).

An opening is formed in the valve case (82), and a core (83) that moves according to hydraulic pressure and a spring (85) that returns the core (83) to its original position are arranged inside the valve case (82).

As the inflowing fluid pushes the core (83), it opens and the fluid flows into the suction chamber (42) from the suction port (43).

However, as customers are demanding continuous cost reduction, a plan to lower the unit price by simplifying the structure is required.

In addition, in this case, a structure capable of reducing the pulsation frequency of the fluid is also required to reduce noise and vibration.

Domestic patent publication number: 2015-0033062 A

The present invention has been made to solve the problems in the related technical field as described above, and the purpose of the present invention is to provide a valve that reduces suction pulsation by making the vibration (excitation) frequency of an engine or a pulley and the wave frequency of a suctioned fluid mismatched through a valve that operates eccentrically to the suction port of the compressor, and a compressor including the same.

In order to achieve the above objects, the present invention relates to a suction check valve for a compressor, which may include a core body arranged between an intake port and an intake chamber of the compressor, a spring body arranged along a portion of the periphery of the core body inside the intake port, and a protrusion block arranged on the core body so that the core body moves eccentrically with respect to the central axis of the intake port.

In addition, in an embodiment of the present invention, the core body may include a first engaging portion arranged at one end located inside the suction port, a second engaging portion arranged at the other end located inside the suction chamber, a guide portion connecting the first engaging portion and the second engaging portion, and an opening portion arranged in the longitudinal direction of the guide portion.

Additionally, in an embodiment of the present invention, the protrusion block may include a first protrusion piece arranged on a portion of the circumference of the first catch portion.

In addition, in an embodiment of the present invention, the first protrusion pieces may be arranged in plurality on the first catch portion, but may be arranged at uneven intervals along the radial direction.

Additionally, in an embodiment of the present invention, the outer periphery of the first protrusion piece may be formed in a round shape.

In addition, in an embodiment of the present invention, the protrusion block may further include a second protrusion piece arranged longitudinally along a portion of the circumference of the guide portion.

In addition, in an embodiment of the present invention, the second protrusion pieces may be arranged in plurality on the guide portion, but may be arranged at uneven intervals along the radial direction.

Additionally, in an embodiment of the present invention, the outer periphery of the second protrusion piece may be formed in a round shape.

In addition, an embodiment of the present invention may include a core body disposed between an intake port and an intake chamber of a compressor, a spring body disposed along a portion of the periphery of the core body inside the intake port, and a protrusion unit disposed on the spring body so that the core body moves eccentrically with respect to the central axis of the intake port.

Additionally, in an embodiment of the present invention, the recessed unit may include a ring groove portion bent inwardly from the spring body.

In addition, in an embodiment of the present invention, the recessed unit may include a ring protrusion portion bent in an outward direction from the spring body.

In addition, an embodiment of the present invention may include a core body having a first engaging block disposed at one end located inside an intake port of a compressor and a second engaging block disposed at the other end located inside an intake chamber of the compressor, a spring body disposed along a portion of the periphery of the core body inside the intake port, and an edge block disposed at a portion of the periphery of the first engaging block so that the spring body is eccentrically disposed around an outer periphery of the core body.

In addition, the present invention is a compressor, including a cylinder block having a piston for compressing a refrigerant, and a suction chamber for receiving the refrigerant from the outside and delivering it to the cylinder block; wherein the suction chamber may include the suction check valve for reducing pulsation of the refrigerant sucked in from the outside.

According to the present invention, by moving a valve placed on an intake port through which fluid flows into a compressor eccentrically to open the intake port, the vibration (excitation) frequency of an engine or pulley generated when a vehicle is driven and the wave frequency of fluid flowing into the engine due to the operation of a compressor mounted on the engine are fundamentally prevented from coinciding, thereby alleviating the pulsation phenomenon.

This ultimately has the effect of maintaining compressor performance and reducing noise and vibration generated during compressor operation.

Figure 1 is a cross-sectional side view of a conventional swash plate compressor.
Figure 2 is a drawing showing the structure of a conventional suction port.
Figure 3 is a drawing showing a first embodiment of a check valve according to the present invention.
FIG. 4a and FIG. 4b are drawings showing one form of the core body of the present invention.
FIG. 5a and FIG. 5b are drawings showing another form of the core body of the present invention.
Fig. 6 is a drawing showing a spring body of the present invention.
Figures 7a and 7b are operating state diagrams showing a state in which the check valve illustrated in Figure 3 moves eccentrically.
Figure 8 is a drawing showing a second embodiment of the check valve of the present invention.
Figures 9a and 9b are operating state diagrams showing a state in which the check valve illustrated in Figure 8 moves eccentrically.

Hereinafter, preferred embodiments of the suction check valve and compressor according to the present invention will be described in detail with reference to the attached drawings.

First, the basic form of a swash plate compressor to which the present invention is applied will be described with reference to Fig. 1. However, the present invention is not necessarily limited to this structure, and the description of the swash plate compressor is effective only within the scope of understanding the present invention.

Referring to Fig. 1, a swash plate type compressor (10) is provided with a cylinder block (20) that forms part of the exterior and skeleton of the compressor (10). At this time, a center bore (21) is formed through the center of the cylinder block (20), and a rotation shaft (60) is rotatably installed in this center bore (21).

A plurality of cylinder bores (22) are formed through the cylinder block (20) to radially surround the center bore (21), and a piston (70) is installed inside the cylinder bore (22) so as to be able to make a linear reciprocating motion. At this time, the piston (70) is formed in a cylindrical shape, and the cylinder bore (22) is a cylindrical space corresponding thereto, and the refrigerant inside the cylinder bore (22) is compressed by the reciprocating motion of the piston (70).

A front housing (30) is coupled to the front of the cylinder block (20). The front housing (30) has a surface facing the cylinder block (20) recessed to form a crankcase (31) inside together with the cylinder block (20).

A pulley (32) that is connected to an external power source (not shown) such as an engine is rotatably installed at the front of the front housing (30), and a rotation shaft (60) rotates in conjunction with the rotation of the pulley (32).

A rear housing (200) is coupled to the rear of the cylinder block (20) as shown in FIG. 7a and FIG. 9a. The overall appearance of the rear housing (200) is similar to the rear housing (40) shown in FIG. 1, but is not necessarily limited thereto.

At this time, a discharge chamber (not shown; similar to the drawing symbol 41 of Fig. 1, but not necessarily limited thereto) is formed along a position adjacent to the outer peripheral edge of the rear housing (200) so as to be selectively connected to the cylinder bore (22).

And referring to FIG. 7a and FIG. 9a, the suction port (210) is formed on one side of the rear housing (200) and is connected to the suction chamber (230) arranged in the central portion of the rear housing (200). However, it is not necessarily limited to this, and other locations are also possible depending on the type of compressor.

Here, the suction assembly can be comprised of the suction port (210), the suction chamber (230), and the suction check valve (300) to be reviewed below. Of course, only the above components are not necessarily included, and other components that are necessary in the process of specifying the compressor design can also be included.

At this time, a valve plate (50) is interposed between the cylinder block (20) and the rear housing (200), and the discharge room (not shown) is connected to the cylinder bore (22) through a discharge port (51) formed in the valve plate (50).

In addition, a swash plate (61) is installed on the rotating shaft (60), and is connected to each piston (70) by a shoe (62) provided along the edge of the swash plate (61), and the piston (70) moves linearly and reciprocally within the cylinder bore (22) by the rotation of the swash plate (61).

At this time, the angle of the swash plate (61) with respect to the rotating shaft (60) is installed so that the refrigerant discharge amount of the compressor (10) can be adjusted. To this end, the opening of the flow path connecting the discharge chamber (not shown) and the crank chamber (31) is adjusted by a pressure regulating valve (not shown).

The conventional swash plate type compressor having the above configuration has a so-called radially symmetrical structure in which a plurality of cylinder bores (22) formed in a cylinder block (20) are arranged radially spaced apart from each other around a rotation axis (60).

When the swash plate (61) rotates through the structure described above, multiple pistons (70) move to compress the fluid, and when the valve door (52) is opened by hydraulic pressure, the compressed fluid is pushed out into the discharge chamber (not shown) through the discharge port (51) of the valve plate (50).

Below, the suction check valve of the present invention will be described by dividing it into various embodiments.

[Example 1]

FIG. 3 is a drawing showing a first embodiment of a check valve according to the present invention, FIGS. 4a and 4b are drawings showing one form of a core body according to the present invention, FIGS. 5a and 5b are drawings showing another form of a core body according to the present invention, FIG. 6 is a drawing showing a spring body according to the present invention, and FIGS. 7a and 7b are operating state diagrams showing a state in which the check valve shown in FIG. 3 moves eccentrically.

Referring to FIG. 3, an embodiment of the suction check valve of the present invention can be configured to include a core body (310), a spring body (330), and a protrusion block (350).

The above core body (310) may be placed between the suction port (210) and the suction chamber (230) of the compressor shown in Fig. 1. The above core body (310) may be made of a plastic material, but is not necessarily limited thereto.

The core body (310) may be configured to include a first engaging portion (311), a second engaging portion (313), a guide portion (315), and an opening portion (317). The first engaging portion (311) may be arranged at one end located inside the suction port (210). It may be provided in a form that protrudes slightly in a radial direction from the guide portion (315). A through hole (319) is formed in the center of the first engaging portion (311), so that fluid introduced into the suction port (210) flows into the suction chamber (230) through the opening portion (317).

The second catch portion (313) may be positioned at the other end located inside the suction chamber (230). This may also be provided in a form that protrudes slightly in a radial direction compared to the guide portion (315).

The above guide portion (315) may be a portion that connects the first catch portion (311) and the second catch portion (313), and an opening portion (317) is formed in the longitudinal direction on the guide portion (315). The fluid introduced into the through hole (319) can flow into the suction chamber (230) through the opening portion (317).

Next, the spring body (330) may be arranged along a portion of the perimeter of the core body (310) inside the suction port (210). In an embodiment of the present invention, it may be implemented in a coil spring shape, but is not necessarily limited thereto.

The above spring body (330) provides restoring force so that the core body (310) returns to its original position when the core body (310) is retracted by hydraulic pressure.

In one embodiment of the present invention, the protrusion block (350) may be placed on the core body (310) so that the core body (310) moves eccentrically with respect to the central axis of the suction port (210).

One form of the above protrusion block (350) can be implemented as a first protrusion piece (351) arranged on a portion of the circumference of the first catch portion (311).

At this time, the first protrusion piece (351) may be single as shown in Fig. 5a, or may be plural as shown in Fig. 4a. When arranged in multiples, the first protrusion pieces (351) may be arranged at uneven intervals along the radial direction of the first catch portion (311).

When the first protrusion piece (351) is arranged unevenly, the core body (310) moves eccentrically when moving along the suction port (210), which can induce a mismatch with the vibration (excitation) frequency of the engine or the pulley connected to the engine by a belt, ultimately reducing the frequency of occurrence of pulsation frequency during the suction process. This causes the effect of reducing vibration and noise during the suction process.

Here, the outer circumference of the first protrusion piece (351) can be processed into a round shape as in FIG. 4a and FIG. 5a, to facilitate movement within the suction port (210).

The following protrusion block (350) may further include a second protrusion piece (353) arranged longitudinally around a portion of the circumference of the guide portion (315). In FIG. 5b, the second protrusion piece (353) is arranged singly, but is not necessarily limited thereto, and as in FIG. 4b, the second protrusion piece (353) may be arranged in multiples.

In this case, the second protrusion pieces (353) may also be arranged in multiple numbers at uneven intervals along the radial direction of the guide portion (315).

In the case where the second protrusion piece (353) is arranged unevenly, when the core body (310) moves along the boundary block (220; see FIGS. 7a and 7b), the part that comes into contact with the inner surface of the boundary block (220) moves eccentrically due to being uneven in the radial direction, which may induce a mismatch with the vibration (excitation) frequency of the engine or pulley. This ultimately lowers the frequency of occurrence of pulsation frequency during the suction process, and induces the effect of reducing vibration and noise during the suction process.

Here, the outer perimeter of the second protrusion piece (353) can be processed into a round shape as in FIGS. 4b and 5b, to facilitate movement within the boundary block (220).

Meanwhile, in an embodiment of the present invention, the core body (310) may further include a protrusion unit (370) arranged on the spring body (330) so that the core body (310) moves eccentrically with respect to the central axis of the suction port (210). The protrusion block (350) or the protrusion unit (370) may be individually applied to the core body (310) or the spring body (330), or may be applied together as in FIG. 3.

Referring to FIGS. 3 and 6, the uneven unit (370) may be configured to include a ring groove portion (371) and a ring protrusion portion (373). The ring groove portion (371) may be provided in a shape that is bent inwardly from the spring body (330), and the ring protrusion portion (373) may be provided in a shape that is bent in an outwardly from the spring body (330).

The ring groove portion (371) bent inwardly of the spring body (330) causes the position of the spring body (330) to deviate from the center on the outer surface of the core body (310), thereby generating a difference in elasticity at local locations on the core body (310) when the spring body (330) is compressed.

Even these small shape differences can induce a mismatch in the pulsation frequency, thereby reducing noise and vibration during the suction process.

And the height (D5) of the ring protrusion (373) can be formed to be greater than the height (D2) of the first catch block (311). In this case, since the position of the ring protrusion (373) is also arranged unevenly on the spring body (330) together with the first protrusion piece (351) arranged in the radial direction of the first catch block (311), the effect of reducing the pulsation frequency through the uneven arrangement is further increased.

Now, looking at the operating state with reference to FIGS. 7a and 7b, when fluid is introduced through the suction port (210), the fluid is introduced into the through hole (319) of the core body (310) and pushes the core body (310) hydraulically.

At this time, a first protrusion piece (351) is placed on the first catch portion (311), a second protrusion piece (353) is placed on the guide portion (315), and a ring groove portion (371) and a ring protrusion portion (373) are placed on the spring body (330), so that the movement of the core body (310) is slightly eccentric with respect to the center of the inner surface of the suction port (210), as shown in FIG. 7b.

Since the compressor is usually mounted on the engine, it is affected by the vibration (excitation) frequency of the engine or the pulley connected to the engine by a belt. If it matches the wave frequency of the suctioned fluid, the pulsation frequency increases, which causes an increase in noise and vibration.

Therefore, when the core body (310) itself moves eccentrically during the suction process, the wave frequency changes during the movement of the fluid, which can induce a mismatch with the vibration (excitation) frequency of the engine or pulley. In this case, the pulsation frequency is reduced and the noise and vibration of the compressor are alleviated.

[Example 2]

FIG. 8 is a drawing showing a second embodiment of a check valve of the present invention, and FIGS. 9a and 9b are operating state diagrams showing a state in which the check valve shown in FIG. 8 moves eccentrically.

Referring to FIG. 8, the second embodiment of the suction check valve of the present invention may be configured to include a core body (310), a spring body (330), and an edge block (390).

The above core body (310) may be placed between the suction port (210) and the suction chamber (230) of the compressor shown in Fig. 1. The above core body (310) may be made of a plastic material, but is not necessarily limited thereto.

The core body (310) may be configured to include a first engaging portion (311), a second engaging portion (313), a guide portion (315), and an opening portion (317). The first engaging portion (311) may be arranged at one end located inside the suction port (210). It may be provided in a form that protrudes slightly in a radial direction from the guide portion (315). A through hole (319) is formed in the center of the first engaging portion (311), so that fluid introduced into the suction port (210) flows into the suction chamber (230) through the opening portion (317).

The second catch portion (313) may be positioned at the other end located inside the suction chamber (230). This may also be provided in a form that protrudes slightly in a radial direction compared to the guide portion (315).

The above guide portion (315) may be a portion that connects the first catch portion (311) and the second catch portion (313), and an opening portion (317) is formed in the longitudinal direction on the guide portion (315). The fluid introduced into the through hole (319) can flow into the suction chamber (230) through the opening portion (317).

Next, the spring body (330) may be arranged along a portion of the perimeter of the core body (310) inside the suction port (210). In an embodiment of the present invention, it may be implemented in a coil spring shape, but is not necessarily limited thereto.

The above spring body (330) provides restoring force so that the core body (310) returns to its original position when the core body (310) is retracted by hydraulic pressure.

And the edge block (390) can be placed on a part of the circumference of the first catch block (311) so that the spring body (330) is eccentrically placed on the outer circumference of the core body (310).

By means of the above edge block (390), the spring body (330) locally generates a difference in elasticity on the outer surface of the core body (310).

This causes the core body (310) to move eccentrically with respect to the central axis of the inner surface of the suction port (210) due to the difference in locally applied elastic force when the core body (310) moves inside the suction port (210) as shown in FIGS. 9a and 9b. Referring to FIG. 9b, a relatively higher elastic force is applied to one side of the first catch block (311) than to the other side by the edge block (390), so that the core body (310) receives a slight force from one side to the other side.

This elasticity imbalance causes the core body (310) to move slightly eccentrically inside the suction port (210).

Accordingly, even if the compressor mounted on the engine is affected by the vibration (excitation) frequency of the engine or the pulley connected to the engine by a belt, the wave frequency of the suctioned fluid is changed, so that the frequency of occurrence of the pulsation frequency can be reduced. This produces the effect of reducing noise and vibration of the compressor.

The above merely illustrates specific embodiments of the suction check valve and compressor.

Accordingly, it is to be made clear that those skilled in the art will easily understand that the present invention can be substituted and modified in various forms without departing from the spirit of the present invention as described in the claims below.

200: Rear housing 210: Intake
220:Border block 230:Suction chamber

300: Suction check valve 310: Core body
311: 1st catch 313: 2nd catch
315: Guide section 317: Open section
330: Spring body 350: Protrusion block
351:1st protrusion piece 353:2nd protrusion piece
370: Uneven unit 371: Ring home unit
373:Ring protrusion 390:Edge block

Claims (13)

A core body placed between the suction port and the suction chamber of the compressor;
A spring body arranged along a portion of the perimeter of the core body within the suction port; and
A protrusion block arranged on the core body so that the core body moves eccentrically with respect to the central axis of the suction port; and
A protruding unit arranged on the spring body so that the core body moves eccentrically with respect to the central axis of the suction port;
A suction check valve of a compressor, characterized by including a .
In the first paragraph,
The above core body is,
A first catch portion arranged at one end inside the above suction port;
A second catch portion arranged at the other end located inside the above suction chamber;
A guide portion connecting the first engaging portion and the second engaging portion; and
An opening arranged longitudinally in the above guide section;
A suction check valve of a compressor, characterized by including a .
In the second paragraph,
The above protrusion block is,
A suction check valve for a compressor, characterized by including a first protrusion piece arranged on a portion of the circumference of the first engaging jaw portion.
In the third paragraph,
A suction check valve for a compressor, characterized in that the first protrusion pieces are arranged in plurality on the first engaging jaw portion, but are arranged at uneven intervals along the radial direction.
In the third paragraph,
A suction check valve for a compressor, characterized in that the outer periphery of the first protrusion piece is formed in a round shape.
In the third paragraph,
A suction check valve for a compressor, characterized in that the above protrusion block further includes a second protrusion piece arranged longitudinally along a portion of the circumference of the guide portion.
In Article 6,
A suction check valve for a compressor, characterized in that the second protrusion pieces are arranged in plurality on the guide section, but are arranged at uneven intervals along the radial direction.
In Article 6,
A suction check valve for a compressor, characterized in that the outer periphery of the second protrusion piece is formed in a round shape.
A core body placed between the suction port and the suction chamber of the compressor;
A spring body arranged along a portion of the perimeter of the core body within the suction port; and
A protruding unit arranged on the spring body so that the core body moves eccentrically with respect to the central axis of the suction port;
A suction check valve of a compressor, characterized by including a .
In Article 9,
A suction check valve for a compressor, characterized in that the above-mentioned unit includes a ring groove portion bent inwardly from the spring body.
In Article 9,
A suction check valve for a compressor, characterized in that the above-mentioned unit includes a ring protrusion portion bent in an outward direction from the spring body.
A core body having a first engaging portion arranged at one end located inside the suction port of the compressor and a second engaging portion arranged at the other end located inside the suction chamber of the compressor;
A spring body arranged along a portion of the perimeter of the core body within the suction port; and
An edge block disposed on a portion of the periphery of the first engaging jaw portion so that the spring body is eccentrically disposed around the outer periphery of the core body;
A suction check valve of a compressor, characterized by including a .
A cylinder block having a piston for compressing refrigerant; and
Including an intake chamber that receives the refrigerant from the outside and delivers it to the cylinder block;
A compressor characterized in that the suction chamber includes a suction check valve according to any one of claims 1 to 12 to reduce pulsation of the refrigerant sucked in from the outside.

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