compressor

Abstract

The present invention discloses a compressor 1 comprising: an inner pipe 52 being closely inserted into the outer pipe 50; and the compression mechanism 20 including a suction hole 29 formed of a blind hole to extend to the side of the outer pipe 50 and an opening 29c of the suction hole 29. The inner pipe 52 is closely inserted into an opening 29c. The suction valve 40 includes a suction valve body 42, and a seal 48 attached the suction valve body 42. The outer diameter of the suction valve body 42 being larger than the outer diameter of the seal 48. The suction valve body 42 is provided with at least one through hole 42c exposed when viewed from the side of the seal 48.

Description

[0001] TITLE OF THE INVENTION

[0002] COMPRESSOR

[0003] FIELD OF INVENTION

[0004] The present invention relates to a compressor.

[0005] BACKGROUND OF THE INVENTION

[0006] It is known that a scroll compressor includes a suction pipe extending through a sealed container and connected to a suction hole of a fixed scroll of a compression mechanism, and a suction valve provided in the suction hole, as disclosed in the international publication WO 2017 / 042969A1 hereinafter called PTLL

[0007] In PTL1, the scroll compressor also includes a seal plate as a seal, which is located between the lower end of the suction pipe and the suction valve.

[0008] It is difficult to manufacture the suction pipe, the seal plate, and the suction valve with high precision so that an opening of the suction pipe is completely covered when the suction valve contacts the seal plate at the lower end of the suction pipe. As such, a gap occurs between the seal plate and the suction valve, which may cause refrigerant leakage.

[0009] Moreover, as there are various sliding and rotating parts inside the scroll compressor, microparticles are generated when the compressor is operated. As such, the microparticles may accumulate on the contact portion of the seal plate that contacts the suction valve, and the microparticles accumulated on the surface of the seal plate may affect the gap between the seal plate and the suction valve.

[0010] Therefore, the development of the compressor including the suction valve that can prevent the microparticles from accumulating on the surface of the suction valve, as well as that can close the opening of a pipe through which a refrigerant is sucked to the compression mechanism without any gaps, is required.

[0011] CITATION LIST Patent Literature

[0012] PTL 1: International Publication No. WO2017 / 042969A1

[0013] SUMMARY OF THE INVENTION

[0014] It is an objective of the present inventions to provide a compressor the compressor including the suction valve that can prevent the microparticles from accumulating on the surface of the suction valve, as well as that can close the opening of an inner pipe through which a refrigerant is sucked to the compression mechanism without any gaps.

[0015] In order to achieve the above objective, an embodiment of the present invention provides a compressor comprising: a sealed container; an outer pipe being connected from an outside to pass through the sealed container; an inner pipe being closely inserted into the outer pipe and arranged in the sealed container; a suction pipe being closely inserted into the outer pipe and through which a refrigerant is sucked; a crankshaft being accommodated in the sealed container ; and a compression mechanism accommodated in the sealed container and configured to compress the refrigerant sucked from the suction pipe through rotation of the crankshaft, the compression mechanism including a suction hole formed of a blind hole to extend to an opening of the suction hole; wherein the inner pipe is closely inserted into the opening, wherein the compressor includes a suction valve, which is arranged in the suction hole, and is configured to allow a flow of the refrigerant from the suction pipe into a compression chamber of the compression mechanism; wherein the suction valve includes a suction valve body formed in a bottomed hollow cylindrical shape, and a seal formed in a disk shape and attached the suction valve body on a side facing the opening, the outer diameter of the suction valve body being larger than the outer diameter of the seal; wherein the seal is configured to seal an entire end of the inner pipe on a side facing the suction valve when the suction valve is closed; and wherein the suction valve body is provided with at least one through hole penetrating from an internal space of the suction valve body to an external space of the suction valve body, and exposed when viewed from the side of the seal.

[0016] According to the embodiment of the present invention, firstly, the suction valve which is arranged in the suction hole, is configured to allow a flow of the refrigerant from the suction pipe into a compression chamber of the compression mechanism. As such, the refrigerant from the suction pipe is compressed in the compression chamber of the compression mechanism.

[0017] Secondly, the outer diameter of the suction valve body is larger than the outer diameter of the seal, as well as the suction valve body is provided with at least one through hole penetrating from an internal space of the suction valve body to an external space of the suction valve body and exposed when viewed from the side of the seal. As such, the refrigerant with microparticles sucked from the suction pipe flows into the compression chamber through the at least one through hole of the suction valve when the suction valve is opened. As a result, it is possible to prevent the microparticles from accumulating on the surface of the suction valve.

[0018] Thirdly, since the seal is configured to seal the entire end of the inner pipe on a side facing the suction valve when the suction valve is closed, it is possible for the seal of the suction valve to close the entire end of the inner pipe without any gaps. As such, the suction valve prevents a backward flow of the refrigerant with the microparticles from the compression chamber (high pressure side) to the suction hole (low pressure side). As a result, this can prevent the microparticles from accumulating on the surface of the suction valve when the suction valve is closed.

[0019] Therefore, it is possible for the compressor to prevent the microparticles from accumulating on the surface of the suction valve, as well as to close the opening of an inner pipe through which the refrigerant is sucked to the compression mechanism without any gaps.

[0020] BRIEF DESCRIPTION OF DRAWINGS

[0021] The principle of the present invention and its advantages will become apparent in the following description taking in consideration with the accompanying drawings in which: FIG.l is an explanation view illustrating a schematic configuration of a compressor 1 including a suction valve 40 according to an embodiment of the present invention;

[0022] FIG.2A is an enlarged view of a peripheral structure of the suction valve 40 and is a view for illustrating a state in which the suction valve 40 is opened;

[0023] FIG.2B is an enlarged view of the peripheral structure of the suction valve 40 of FIG.2A to explain the relation between a seal and an end of an inner pipe;

[0024] FIG.2C is an enlarged view of a peripheral structure of the suction valve 40 and is a view for illustrating a state in which the suction valve 40 is closed;

[0025] FIG.2D is an enlarged view of the peripheral structure of the suction valve 40 of FIG.2C to explain the relation between the seal and the end of the inner pipe;

[0026] FIG.3A is a perspective view of the suction valve 40;

[0027] FIG.3B is a plan view of the suction valve 40;

[0028] FIG.3C is an explanation view by a cross section taken along the III-III line of FIG.3B, viewed diagonally from above;

[0029] FIG.3D is a sectional view taken along line III-III of FIG.3B; and

[0030] FIG.3E is an explanation view of the suction valve 40 by a cross section of the seal and a projection portion of the suction valve 40 taken along the III-III line of FIG.3B, viewed diagonally from above.

[0031] DETAIEED DESCTIPTION OF EMBODIMENTS OF THE INVENTION

[0032] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference symbols, and description thereof is omitted or simplified as appropriate. Moreover, shapes, sizes, arrangements, and other factors of components illustrated in the drawings may be changed as appropriate without departing from the scope of the invention.

[0033] FIG.1 is an explanation view illustrating a schematic configuration of a scroll compressor 1 according to the embodiment. The compressor 1 is a fluid machine configured to compress and discharge a fluid (e.g., gas refrigerant), and can be a component of a refrigeration cycle apparatus, for example, in a refrigerator, a freezer, an automatic vending machine, an air- conditioning apparatus, a refrigeration unit, a condensing unite, and a water heater. The compressor 1 according to the embodiment is a vertically-mounted shell compressor 1.

[0034] As shown in FIG.1, the compressor 1 includes a sealed container 10 as a sealed container, a suction pipe 12 mounted penetratingly a side face of the sealed container 10 and formed as a hollow cylindrical pipe, a discharge pipe 14 discharging the fluid to the outside, a scroll compression mechanism 20 configured to compress a fluid (low-pressure gas refrigerant) in a compression chamber 28, and a motor element 30 configured to drive the compression mechanism 20 are housed in the sealed container 10.

[0035] The outer periphery of the compression mechanism 20 is fastened to a guide frame 15 by bolts (not shown). The outer periphery of the guide frame 15 is attached to the sealed container 1 through shrink fit or other methods.

[0036] A subframe 16 is provided below the motor element 30. The subframe 16 is fixed to the inner circumferential surface of the sealed container 10. The subframe 16 radially supports a lower portion of a crankshaft 36 and whose periphery is attached to the sealed container 10. An oil sump 18 is formed on a bottom of the sealed container 10. A refrigerating machine oil lubricating sliding parts such as bearings is accumulated in the oil sump 18.

[0037] The suction pipe 12 configured to suck a fluid (low-pressure gas refrigerant) into the compression mechanism 20 from outside is connected to a side face of the sealed container 10. The discharge pipe 14 configured to discharge the fluid (high-pressure gas refrigerant) to the outside of the compressor 1 is connected to a side face of the sealed container 10.

[0038] The compression mechanism 20 is accommodated in the sealed container 10 and configured to compress the refrigerant sucked from the suction pipe 12 through rotation of the crankshaft 36 that is rotated by the motor element 30. As shown in FIG.l, the compression mechanism 20 includes a fixed scroll 22 and an orbiting scroll 26.

[0039] The fixed scroll 22 is fixed to the middle shell 10a at a lower end portion of the fixed scroll 22. The fixed scroll 22 includes a fixed scroll base plate 22a and a fixed scroll body 22b having an involute curve shape and erected on one surface of the fixed scroll base plate 22a. A discharge port 24 configured to discharge a compressed fluid is formed in a central part of the fixed scroll 22.

[0040] The orbiting scroll 26 is configured to orbit opposed to the fixed scroll 22 without rotating, by a non-illustrated Oldham mechanism. The orbiting scroll 26 includes an orbiting scroll base plate 26a and an orbiting scroll body 26b having an involute curve shape and erected on one surface of the orbiting scroll base plate 26a. An orbiting bearing 26c formed in a bottomed cylindrical shape is formed in a substantially central part on an undersurface of the orbiting scroll base plate 26a. An eccentric shaft portion 36b installed on an upper end of a crankshaft 36 described later is inserted in the orbiting bearing 26c, in order to cause the orbiting scroll 26 to orbit.

[0041] The orbiting scroll body 26b is configured to be engaged with the fixed scroll body 22b to form the compression chamber 28 between the fixed scroll body 22b and the orbiting scroll body 26b. The orbiting scroll 26 is configured to orbit opposed to the fixed scroll 22.

[0042] Moreover, as shown in FIG.l, the compressor 1 includes a compliant frame 17 that axially supports an orbiting scroll 26 and radially supports the crankshaft 36 that drives the orbiting scroll 26, and the guide frame 15 that radially supports the compliant frame 17. As mentioned above, the guide frame 17 on which the fixed scroll 22 is attached and whose periphery is attached to the sealed container 10.

[0043] The motor element 30 includes an electric motor stator 32 fixed to the inner circumferential surface of the sealed container 10 through shrink fit or other method, an electric motor rotor 34 rotatably housed on an inner circumferential side of the electric motor stator 32, and the crankshaft 36 (main shaft portion 36a) fixed to the electric motor rotor 34 through shrink fit or other method. The electric motor stator 32 is connected to a glass terminal 38 via lead wires. The electric motor stator 32 is supplied with electric power from outside via the glass terminal 38 and lead wires. The electric motor rotor 34 is configured to rotate as electric power is supplied to the electric motor stator 32 and transmit a driving force to the orbiting scroll 26 through the crankshaft 36.

[0044] An eccentric shaft portion 36b located above the electric motor rotor 34 in the crankshaft 36 is rotatably supported in a radial direction by the cylindrical orbiting bearing 26c installed under the orbiting scroll base plate 26a. The main shaft portion 36a is fitted in a main bearing 39 fitted in the compliant frame 17 and slides along the main bearing 39 by an oil film of a lubricating oil. The eccentric shaft portion 36b eccentric to the main shaft portion 36a is installed on the upper end of the crankshaft 36. A part of the crankshaft 36 located below the electric motor rotor 24 is rotatably supported by the subframe 16.

[0045] A pump element 19 such as a positive displacement pump is installed at a lower end of the crankshaft 36. The pump element 19 supplies the refrigerating machine oil accumulated in the oil sump 18 to the sliding parts such as the main bearing 39. The pump element 19 is mounted on the subframe 16 and supports the crankshaft 36 in the axial direction on an upper end surface of the pump element 19.

[0046] As shown in FIG.2A to FIG.2D, the compression mechanism 20 of the compressor 1 according to the embodiment, includes a suction hole 29 formed of a blind hole to extend to an opening 29c of the suction hole 29. The suction hole 29 is formed in a bottomed cylindrical shape. The suction hole 29 includes a recessed end surface 29a in a center side of the compression mechanism 20 as a bottom part of the bottomed cylindrical shape, and the opening 29c of the suction hole 29 which is formed to open on the side of the suction pipe 12. The refrigerant sucked through the suction pipe 12 flows into the suction hole 29.

[0047] As shown in FIG.2A and FIG.2C, the suction hole 29 is formed to extend from a side of the end surface 29a to a side of the middle shell 10a. An inner wall of the suction hole 29 includes a suction hole stepped portion 29b where a radius of the suction hole cross section increases from a side of the end surface 29a to a side of the middle shell 10a in an axial direction of the suction hole 29.

[0048] As shown in FIG.2A and FIG.2C, an outer pipe 50 is a hollow cylindrical pipe and formed to be connected from an outside to pass through the sealed container 10 toward the direction of the outer pipe 50. An end 50a of the outer pipe 50 at a side of the end surface 29a is formed in an annular shape.

[0049] Also, the inner diameter of the outer pipe 50 is same as the external diameters the inner pipe 52 and the suction pipe 12. The suction pipe 12 is closely inserted into the outer pipe 50. The inner diameter of the outer pipe 50 is larger than the diameter of the opening 29c of the suction hole 29. As such, when the outer pipe 50 is inserted into the sealed container 10 toward to the direction of the suction hole 29, the end 50a of the outer pipe 50 is located at the position where the end 50a contacts with the periphery of the opening 29c of the mechanism 20.

[0050] As shown in FIG.2A and FIG.2C, the inner pipe 52 is a hollow cylindrical pipe and closely inserted into the outer pipe 50 and the suction hole 29 and arranged in the sealed container 10. An end 52a of the inner pipe 52 at a side of the end surface 29a is formed in an annular shape. Moreover, an outer wall of the inner pipe 52 includes an inner pipe stepped portion 52b where a radius of the suction hole cross section increases from a side of the end 52a to a side of the middle shell 10a in an axial direction of the inner pipe 52.

[0051] The external diameter of the inner pipe 52 is formed to be the same as the inner diameter of the outer pipe 50 and the inner diameter of the suction hole 29 between the inner pipe stepped portion 52b and the opening 29c, so that the inner pipe 52 is closely inserted into the suction hole 29c and the outer pipe 50.

[0052] As the outer wall of the inner pipe 52 includes the inner pipe stepped portion 52b, the inner pipe stepped portion 52b of the inner pipe 52 is contact with the suction hole stepped portion 29b of the suction hole 29 when the inner pipe 52 is closely inserted into the suction hole 29, and then located on the predetermined position.

[0053] Regarding hardness of the inner pipe 52, the outer pipe 50 and the suction pipe 12, hardness of the inner pipe 52 is harder than hardness of the outer pipe 50 as well as hardness of the suction pipe 12 is harder than hardness of the outer pipe 50. For example, the inner pipe 52 and the suction pipe 12 are made by steel, and the outer pipe 50 is made by copper.

[0054] When the inner pipe 52 and / or the suction pipe 12 is inserted inside the outer pipe 50, it is possible to enhance contact property between the outer pipe 50 and the inner pipe 52 and / or the suction pipe 12. As a result, since the inner pipe 52 and / or the suction pipe 12 is installed firmly inside the outer pipe 50, it is possible to improve accuracy of a set position of the inner pipe 52 and / or the suction pipe 12. Therefore, the leakage of the refrigerant from the high pressure side to the low pressure side for a specified period is surely prevented.

[0055] Furthermore, in this embodiment, the entire end 52a of the inner pipe 52 is formed in a round chamfered shape. The entire end 52a of the inner pipe 52 is formed in a round chamfered shape, but is not limited thereto. For example, the entire end 52a of the inner pipe 52 may be formed in a taper shape.

[0056] Moreover, the compressor 1 includes a suction valve 40, which is arranged in the suction hole 29, and is configured to allow a flow of the refrigerant from the suction pipe 12 into the compression chamber 28 of the compression mechanism 20. The suction valve 40 functions as a check valve so that a force of stopping the reverse rotation of the crankshaft 36 is exerted on the eccentric shaft portion 36b of the crankshaft 36.

[0057] As shown in FIG.3A to 3E, the suction valve 40 includes a suction valve body 42 formed in the shape of bottomed cylinder, and a seal 48 formed in a disk shape and attached the suction valve body 42 on a side facing the opening 29c of the suction hole 29. The outer diameter of the suction valve body 42 is formed to be larger than the outer diameter of the seal 48. As such, when the suction valve 40 is viewed from the side of the seal 48, the peripheral edge of the suction valve body 42 can be seen on the outside of the seal 48.

[0058] The suction valve body 42 includes a hollow part 42a formed in a bottomed hollow cylindrical shape, a projection portion 44 integrally formed with the suction valve body 42 and configured to move together with the seal 48 in the suction hole 29, and a spring 46 configured to urge the suction valve body 42 in a direction of sealing the entire end 52a of the inner pipe 52 on the side facing the suction valve 40. The spring 46 is formed to fit the recessed end surface 29a of the suction hole 29 and arranged within an internal space of the hollow part 42a.

[0059] In this embodiment, the suction valve body 42 is provided with four through holes 42c penetrating from an internal space of the suction valve body 42 to an external space of the suction valve body 42, and exposed when viewed from the side of the seal 48. The refrigerant from the suction pipe 12 can flows into the internal space in the hollow part 42a of the suction valve body 42 of the suction valve 40 via the through holes 42c, when the suction valve 40 is opened.

[0060] The number of through holes is not limited to 4, for example at least one may be provided in the suction valve body 42. In case that the number of the through holes 42c is multiple, it is preferable that the through holes are arranged symmetrically when the suction valve is viewed from the side of the seal 48. As the through holes are arranged symmetrically, the suction valve- 40 operates without tilting, thereby enabling stable operation of the suction valve 40.

[0061] The projection portion 44 includes a shaft part 44a which is formed on a seal mounting surface 42b of the suction valve body 42 for mounting the seal 48 opposite to the hollow part 42a to extend from the seal mounting surface 42b in an axial direction of the suction valve 40, and a head part 44b which is connected to the shaft part 44a and formed in a plate shape.

[0062] The projection portion 44 is formed in a cross-sectional T-shape in the axial direction of the suction valve 40. As such, the seal 48 is securely fixed onto the seal mounting surface 42b of the suction valve body 42 by the projection portion 44, with a simple structure.

[0063] The seal 48 is formed in a disk shape and includes a seal hole 48a which is provided at a center portion thereof and into which the shaft part 44a is inserted. Moreover, the seal 48 is configured to seal an entire end 52a of the inner pipe 52 on a side facing the suction valve 40 when the suction valve 40 is closed. The seal 48 is made of a synthetic resin, but is not limited thereto. For example, the seal 48 may be made of a rubber material.

[0064] A seal periphery edge 48b of the seal 48 is configured to seal an entire end 52a of the inner pipe 52. Moreover, the seal periphery edge 48b of the seal 48 is formed in a round chamfered shape. In this embodiment, as the entire end 52a of the inner pipe 52 is formed in a round chamfered shape, the seal 48 of the suction valve 40 can be contact with the entire end 52a smoothly when the suction valve 40 is closed. As such, it is possible for the seal 48 of the suction valve 40 to close the entire end 52a of the inner pipe 52 without any gaps.

[0065] In addition, even if the shape of the entire end 52a of the inner pipe 52 is changed from a round chamfered shape to a tapered shape, the seal 48 of the suction valve 40 can be contact with the entire end 52a smoothly when the suction valve 40 is closed. As such, it is possible for the seal 48 to close the entire end 52a of the inner pipe 52 without any gaps.

[0066] As shown in FIG.3D, in this embodiment, the relation between the height “X” of the through hole 42c along the axis “A” of the suction valve 40 (See FIG.2A.) and the height “Y” from the through hole 42c to the end of the suction valve 40, along the axis “A” of the suction valve 40, is X / Y<1. As such, it is possible to prevent the suction valve 40 from becoming unstable operation.

[0067] Next, an operation of the suction valve 40 is described in details with reference to FIG.2A to FIG.2D.

[0068] As shown in FIG.2A and FIG.2B, while the suction valve 40 is opened, the sucked refrigerant flows from the suction pipe 12 into the suction hole 29. By a force generated by a flow of the sucked refrigerant, the spring 46 is shrunk to move the suction valve body 42 to a radially inner side of the compressor 1. By the radially inner movement of the suction valve body 42, as the suction valve body 42 is provided with the through holes 42c penetrating from an internal space of the suction valve body 42 to an external space of the suction valve body 42 and exposed when viewed from the side of the seal 48, the refrigerant flows from the inner pipe 52 into the inner space inside the suction valve 40 through the through holes 42c of the suction valve 40, and then flows into the compress chamber 28.

[0069] In this manner, the suction valve body 42 can be smoothly moved to the radially inner side of the compressor 1. As such, the refrigerant from the suction pipe 12 is compressed in the compression chamber 28 of the compression mechanism 20.

[0070] Moreover, as the outer diameter of the suction valve body 42 is larger than the outer diameter of the seal 48, the refrigerant with microparticles sucked from the suction pipe 12 flows into the compression chamber 28 through the through holes 42c when the suction valve is opened. As a result, it is possible to prevent the microparticles from accumulating on the surface of the suction valve 40.

[0071] As shown in FIG.2C and FIG.2D, while the suction valve 40 is closed, the suction valve body 42 is pressed by a spring force of the spring 46 from the radially inner side of the compressor 1 to the radially outer side of the compressor 1. Further, the crankshaft 36 is rotated reversely due to a differential pressure between the compression chamber 28 and the inner space of the suction valve 40, and hence the high-pressure refrigerant in the compression chamber 28 flows into the inner space of the hollow part 42a of the suction valve 40. In this manner, a pressure in the hollow part 42a is boosted to act as a force for pressing the suction valve body 42 to the radially outer side of the compressor 1.

[0072] Moreover, since the seal 48 is configured to seal the entire end 52b of the inner pipe 52 on a side facing the suction valve 40 when the suction valve is closed, it is possible for the seal 48 of the suction valve 40 to close the entire end 52b of the inner pipe 52 without any gaps. As such, the suction valve 40 prevents a backward flow of the refrigerant with the microparticles from the compression chamber 28 to the suction hole 29c. As a result, this can prevent the microparticles from accumulating on the surface of the suction valve 40 when the suction valve 40 is closed.

[0073] Therefore, it is possible for the compressor 1 to prevent the microparticles from accumulating on the surface of the suction valve 40, as well as to close the opening of an inner pipe 52 through which the refrigerant is sucked to the compression mechanism 20 without any gaps.

[0074] Although specific embodiments of the invention have been disclosed and described as well as illustrated in the companying drawings, it is simply for the purpose of better understanding of the principle of the present invention and it is not as a limitation of the scope and spirit of the teaching of the present invention. Adaption and modification to various structures such as design or material of the invention, mounting mechanism of various parts and elements or embodiments are possible and apparent to a skilled person without departing from the scope of the present invention which is to be determined by the claims.

[0075] List of reference:

[0076] 1: compressor

[0077] 10: sealed container

[0078] 10a: middle shell

[0079] 12: suction pipe

[0080] 14: discharge pipe

[0081] 15: guide frame

[0082] 16: subframe

[0083] 17: compliant frame : oil sump : pump element : compression mechanism : fixed scroll a: fixed scroll base plate b: fixed scroll body : discharge port : orbiting scroll a: orbiting scroll base plateb: orbiting scroll body c: orbiting bearing : compression chamber : suction hole a: end surface b: suction hole stepped portionc: opening : motor element : electric motor stator : electric motor rotor : crankshaft a: main shaft portion b: eccentric shaft portion : glass terminal : main bearing : suction valve : suction valve body a: hollow part b: seal mounting surface c: through hole : projection portion a: shaft part b: head part : spring : seal 48a: seal hole

[0084] 48b: seal periphery edge

[0085] 50: outer pipe

[0086] 50a: end of the outer pipe 52: inner pipe

[0087] 52a: end of the inner pipe

[0088] 52b: inner pipe stepped portion

[0089] A: axis of the suction hole

[0090] X: height of the through hole along the axis of the suction valve Y: height from the through hole to the end of the suction valve

Claims

CLAIMS1. A compressor (1) comprising: a sealed container (10); an outer pipe (50) being connected from an outside to pass through the sealed container (10); an inner pipe (52) being closely inserted into the outer pipe (50) and arranged in the sealed container (10); a suction pipe (12) being closely inserted into the outer pipe (50) and through which a refrigerant is sucked; a crankshaft (36) being accommodated in the sealed container (10); and a compression mechanism (20) accommodated in the sealed container (10) and configured to compress the refrigerant sucked from the suction pipe (12) through rotation of the crankshaft (36), the compression mechanism (20) including a suction hole (29) formed of a blind hole to extend to an opening (29c) of the suction hole (29); wherein the inner pipe (52) is closely inserted into the opening (29c), wherein the compressor (1) includes a suction valve (40), which is arranged in the suction hole (29), and is configured to allow a flow of the refrigerant from the suction pipe (12) into a compression chamber (28) of the compression mechanism (20); wherein the suction valve (40) includes a suction valve body (42) formed in a bottomed hollow cylindrical shape, and a seal (48) formed in a disk shape and attached the suction valve body (42) on a side facing the opening (29c), the outer diameter of the suction valve body (42) being larger than the outer diameter of the seal (48); wherein the seal (48) is configured to seal an entire end (52a) of the inner pipe (52) on a side facing the suction valve (40) when the suction valve (40) is closed; and wherein the suction valve body (42) is provided with at least one through hole (42c) penetrating from an internal space of the suction valve body (42) to an external space of the suction valve body (42), and exposed when viewed from the side of the seal (48).

2. The compressor (1) of claim 1, wherein a seal periphery edge (48b) of the seal (48) configured to seal the entire end (52a) of the inner pipe (52) is formed in a round chamfered shape.

3. The compressor (1) of claim 2, wherein the entire end (52a) of the inner pipe (52) is formed in a round chamfered shape or in a taper shape.

4. The compressor (1) of claim 1, wherein the number of the through holes (42c) is multiple and the through holes (42c) are arranged symmetrically when the suction valve (40) is viewed from the side of the seal (48).

5. The compressor (1) of claim 1, wherein the relation between the height (X) of the through hole (42c) along the axis (A) of the suction valve (40) and the height (Y) from the through hole (42c) to the end of the suction valve (40), along the axis of the suction valve (40), is X / Y<l.

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