JP2016000966A - Compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To overcome a conventional problem that the compression efficiency of a compressor greatly degrades since heat of refrigerant in a muffler space is transferred to refrigerant within the inlet hole of a cylinder.SOLUTION: A compressor 1 of the present invention comprises: a rear cylinder 14 including a compression chamber 31 formed therein; a rear head 15 disposed on an end surface of the rear cylinder 14; and a muffler member 18 with a second muffler space 19 being formed between the muffler member 18 and the rear head 15. The rear cylinder 14 includes an inlet hole 32 for supplying refrigerant to the compression chamber 31. In the second muffler space 19, a heat insulation space 53 partitioned by ribs 51 and 52 is provided so as to make it difficult for the refrigerant to enter the heat insulation space 53, and the heat insulation space 53 overlaps the inlet hole 32 in a plan view.

Description

  The present invention relates to a compressor that compresses a refrigerant.

  For example, the compressor has a drive mechanism and a compression mechanism housed in an airtight container, and the compression mechanism is attached to the head, a cylinder having a compression chamber, a head disposed on an end surface of the cylinder, and the head. And a muffler member. Therefore, the refrigerant compressed in the compression chamber of the cylinder and discharged into the muffler space is discharged into the sealed container from the discharge hole formed in the muffler member.

JP-A-9-151888

  The refrigerant discharged from the compression chamber of the cylinder to the muffler space passes through a range overlapping with the suction hole communicating with the compression chamber of the cylinder in the muffler space. At this time, the heat of the refrigerant in the muffler space is transferred to the refrigerant in the suction hole of the cylinder. Thereby, there exists a problem that the compression efficiency of a compressor falls remarkably.

  Therefore, an object of the present invention is to provide a compressor with improved compression efficiency.

  A compressor according to a first aspect of the present invention includes a cylinder in which a compression chamber is formed, an end plate member disposed on an end surface of the cylinder, and an end surface of the end plate member opposite to the cylinder. A muffler member that forms a muffler space with the plate member, and the cylinder has a suction hole for supplying a refrigerant to the compression chamber, and the muffler space is partitioned by a partition member. In addition, a heat insulating space that is difficult for the refrigerant to enter is provided, and the heat insulating space overlaps with the suction hole in a plan view.

  In this compressor, the muffler space is provided with a heat insulating space in which the refrigerant is difficult to enter, and the heat insulating space is configured to overlap with the cylinder suction hole in a plan view. It is suppressed that the heat of the discharged refrigerant is transmitted to the refrigerant in the suction hole of the cylinder. Therefore, the compression efficiency of the compressor can be improved.

  A compressor according to a second aspect of the invention is the compressor according to the first aspect of the invention, wherein a roller and a blade that are divided into a suction chamber and a discharge chamber are disposed inside the compression chamber, and the cylinder includes the compression chamber The blade housing part is disposed on the radially outer side of the chamber for moving the blade back and forth, and the end plate member is located on a side opposite to the suction hole with respect to a center line of the blade housing part in a plan view. The partition member has a discharge hole that communicates with the compression chamber, and the partition member has a radially outer end disposed in a region between the suction hole and the center line in a plan view, and a radially inner side. It is characterized by inclining so as to pass through the radially outer end as it approaches and away from a straight line along the radial direction.

  In this compressor, when the heat insulating space is provided by inclining the partition member for partitioning the heat insulating space in the muffler space so as to be separated from the blade accommodating portion as it approaches the radially inner side, the discharge hole is provided in the muffler space. It is possible to suppress a nearby space from becoming narrow.

  A compressor according to a third aspect is the compressor according to the second aspect, wherein the muffler member is in the vicinity of the suction hole on the side opposite to the blade housing part with respect to the suction hole in plan view. And the radially inner end of the partition member passes through the fastening portion in a plan view and is opposite to the suction hole with respect to a straight line along the radial direction. It is characterized by being arranged in.

  In this compressor, when the heat insulating space is provided by inclining the partition member for partitioning the heat insulating space in the muffler space so that the radially inner end thereof is separated from the discharge hole, the discharge hole is formed in the muffler space. It is possible to effectively suppress the nearby space from being narrowed.

  A compressor according to a fourth aspect of the present invention is the compressor according to any one of the first to third aspects, wherein the partition member is configured integrally with the end plate member.

  In this compressor, the partition member can be easily formed.

  A compressor according to a fifth invention is the compressor according to the fourth invention, wherein the end plate member has a main body part and a boss part protruding from the main body part, and the partition member is It is a rib which connects the body part and the boss part.

  In this compressor, the strength of the end plate member can be increased.

  As described above, according to the present invention, the following effects can be obtained.

  In the first invention, the heat insulation space in which the refrigerant is difficult to enter is provided in the muffler space, and the heat insulation space is configured to overlap the suction hole of the cylinder in a plan view. It is suppressed that the heat of the refrigerant discharged to the refrigerant is transmitted to the refrigerant in the suction hole of the cylinder. Therefore, the compression efficiency of the compressor can be improved.

  In the second invention, when the heat insulating space is provided by inclining the partition member for partitioning the heat insulating space in the muffler space so as to move away from the blade accommodating portion as it approaches the radially inner side, the discharge is performed in the muffler space. It is possible to suppress the space near the hole from becoming narrow.

  In the third invention, when the heat insulating space is provided by inclining the partition member for partitioning the heat insulating space in the muffler space so that the radially inner end thereof is separated from the discharge hole, the discharge is performed in the muffler space. It is possible to effectively suppress the space near the hole from being narrowed.

  In the fourth invention, the partition member can be easily formed.

  In the fifth invention, the strength of the end plate member can be increased.

It is a longitudinal cross-sectional view of the compressor concerning embodiment of this invention. It is the elements on larger scale of FIG. It is a top view of a rear cylinder. It is a top view of a rear head. It is a figure explaining arrangement | positioning of the heat insulation space and the suction hole of a rear head. It is a top view of the rear head concerning the modification of this invention. It is a figure explaining arrangement | positioning of the heat insulation space and the suction hole of a rear head in the modification of this invention.

(First embodiment)
Hereinafter, the compressor 1 concerning 1st Embodiment of this invention is demonstrated. In the following description, the case where the compressor 1 is a vertically placed compressor arranged in the vertical direction will be described. The vertical direction in FIG. explain.

[Overall configuration of compressor]
As shown in FIG. 1, the compressor 1 is a two-cylinder rotary compressor, and includes a sealed container 2, a drive mechanism 6 and a compression mechanism 9 accommodated in the sealed container 2. The compressor 1 is used by being incorporated in a refrigeration cycle such as an air conditioner, and compresses a refrigerant (for example, R32 refrigerant) supplied to the compression mechanism 9 from the suction pipes 3a and 3b of the accumulator 3, thereby discharging the pipe 4. Discharge from.

  The sealed container 2 is a cylindrical container whose upper and lower ends are closed. The above-described two suction pipes 3a and 3b are provided on the side of the sealed container 2. A discharge tube 4 for discharging the refrigerant compressed by the compression mechanism 9 and a terminal terminal 5 for supplying a current to the coil of the drive mechanism 6 are provided on the top of the sealed container 2. In addition, lubricating oil L is stored at the bottom in the sealed container 2.

[Drive mechanism]
The drive mechanism 6 is provided to drive the compression mechanism 9 and includes a motor 7 serving as a drive source and a crankshaft 8 attached to the motor 7. The motor 7 includes a substantially annular stator that is fixed to the inner peripheral surface of the hermetic container 2 and a substantially annular rotor that is disposed on the radially inner side of the stator via an air gap. Yes. The rotor has a magnet, and the stator has a coil. The rotor is rotated by the electromagnetic force generated by passing a current through the coil of the stator.

  The crankshaft 8 is fixed to the inner peripheral surface of the rotor, and rotates integrally with the rotor to drive the compression mechanism 9. The crankshaft 8 has eccentric portions 8a and 8b in compression chambers 21 and 31, which will be described later. The eccentric portions 8 a and 8 b are both formed in a columnar shape, and the central axis thereof is eccentric with respect to the rotation center of the crankshaft 8. The eccentric portions 8 a and 8 b are disposed inside the pistons 24 and 34 (rollers 25 and 35) of the compression mechanism 9.

[Compression mechanism]
As shown in FIG. 2, the compression mechanism 9 includes a front head 11, a front cylinder 12, a middle plate 13, a rear cylinder 14, and a rear head 15. These are arranged in order from the top to the bottom of the compressor 1. In the compressor 9 of the present embodiment, the configurations of the front cylinder 12 and the piston 24 are substantially the same as the configurations of the rear cylinder 14 and the piston 34.

<Front cylinder>
The front cylinder 12 is a substantially circular plate-like member, and a compression chamber 21 that is a circular hole is formed at the center thereof. Further, the front cylinder 12 is formed with a suction hole 22 for introducing a refrigerant into the compression chamber 21 and a blade accommodating portion (not shown) recessed radially outward from the inner peripheral surface of the compression chamber 31. The piston 24 disposed in the compression chamber 21 has an annular roller 25 and a blade (not shown) protruding radially outward from the outer peripheral surface of the roller 25. The roller 25 is disposed outside the eccentric portion 8 a and rotates so that the outer peripheral surface of the roller 25 is along the inner peripheral surface of the compression chamber 21. The blade is disposed so as to be able to advance and retreat between a pair of bushes disposed in the blade accommodating portion. The compression chamber 21 is divided into a low pressure chamber and a high pressure chamber by a roller 25 and a blade. The suction hole 22 communicates with the low pressure chamber of the compression chamber 21.

<Front head>
As shown in FIG. 2, the front head 11 is disposed on the upper end surface of the front cylinder 12 and closes the upper end of the compression chamber 21. The front head 11 has a boss portion 11a formed with an insertion hole through which the crankshaft 8 is rotatably inserted, and a main body portion 11b protruding radially outward from the outer peripheral surface on the lower side of the boss portion 11a. ing. A discharge hole (not shown) for discharging the refrigerant compressed in the compression chamber 21 of the front cylinder 12 is formed in the main body 11b. The discharge hole communicates with the high-pressure chamber of the compression chamber 21 on the side opposite to the suction hole 22 with respect to the center line of the blade housing portion in plan view. In addition, a discharge valve (not shown) that opens and closes the discharge hole according to the pressure in the compression chamber 21 is attached to the upper surface of the main body 11c.

  A front muffler 16 is attached to the upper side of the front head 11. A first muffler space 17 is formed between the front head 11 and the front muffler 16. The first muffler space 17 communicates with the high pressure chamber of the compression chamber 21 through the discharge hole of the front cylinder 12. The first muffler space 17 is provided in order to reduce noise accompanying refrigerant discharge. The refrigerant compressed in the compression chamber 21 of the front cylinder 12 and discharged into the first muffler space 17 is discharged into the sealed container 2 from a discharge hole formed at the upper end of the front muffler 16.

<Middle plate>
The middle plate 13 is a circular plate-like member, and is disposed on the lower end surface of the front cylinder 12 and the upper end surface of the rear cylinder 14. The middle plate 13 closes the lower end of the compression chamber 21 of the front cylinder 12 and closes the upper end of the compression chamber 31 of the rear cylinder 14.

<Rear cylinder>
As shown in FIG. 3, the rear cylinder 14 is a substantially circular plate-like member, and a compression chamber 31 that is a circular hole is formed at the center thereof. Further, the rear cylinder 14 has a suction hole 32 for introducing the refrigerant into the compression chamber 31 and a blade accommodating portion that accommodates the blade 36 and has a shape recessed radially outward from the inner peripheral surface of the compression chamber 31. 33 is formed. The suction hole 32 is disposed in the vicinity of the blade accommodating portion 33. Specifically, it is disposed within a range of 0 ° to 90 ° away from the center line A1 of the blade accommodating portion 33 in the rotation direction of the crankshaft 8. In addition, the tip of the suction pipe 3b is fitted in the suction hole 32.

  The piston 34 includes an annular roller 35 and a blade 36 that protrudes radially outward from the outer peripheral surface of the roller 35. The roller 35 is disposed outside the eccentric portion 8 b and rotates so that the outer peripheral surface is along the inner peripheral surface of the compression chamber 31. The blade 36 is disposed between the pair of bushes 33 a disposed in the blade accommodating portion 33 so as to be able to advance and retreat. The compression chamber 31 is divided into a low pressure chamber and a high pressure chamber by the roller 35 and the blade 36. The suction hole 32 communicates with the low pressure chamber of the compression chamber 31.

<Rear head>
The rear head 15 is disposed on the lower end surface of the rear cylinder 14 and closes the lower end of the compression chamber 31 of the rear cylinder 14. The rear head 15 includes a boss portion 15a formed with an insertion hole through which the crankshaft 8 is rotatably inserted, and a main body portion 15b projecting radially outward from the outer peripheral surface on the upper side of the boss portion 15a. Yes. As shown in FIG. 4, the main body portion 15 b is formed with a discharge hole 15 c for discharging the refrigerant compressed in the compression chamber 31 of the rear cylinder 14. As shown in FIG. 5, the discharge hole 15 c communicates with the high-pressure chamber of the compression chamber 31 on the side opposite to the suction hole 32 with respect to the center line A <b> 1 of the blade accommodating portion 33 in a plan view. A discharge valve 50 that opens and closes the outlet of the discharge hole 15c according to the pressure in the compression chamber 31 is attached to the lower surface of the main body 15b.

  A rear muffler 18 is attached to the lower side of the rear head 15. A second muffler space 19 is formed between the rear head 15 and the rear muffler 18. The second muffler space 19 communicates with the high pressure chamber of the compression chamber 31 through the discharge hole 15 c of the rear cylinder 14. The second muffler space 19 is provided in order to reduce noise accompanying refrigerant discharge. The first muffler space 17 and the second muffler space 19 are communicated with each other through a through hole (not shown). Therefore, the refrigerant compressed in the compression chamber 31 of the rear cylinder 14 and discharged into the second muffler space 19 is discharged into the first muffler space 17 through the through hole. And it merges with the refrigerant | coolant compressed by the compression chamber 21 of the front cylinder 12, and is discharged to the discharge space 2b from the discharge hole formed in the upper end of the front muffler 16. FIG.

  Five fastening portions (not shown) fastened to the rear head 15 are provided on the outer peripheral portion of the rear muffler 18, and the fastening portions are fastened to five fastening portions 15 d provided on the outer peripheral portion of the rear head 15. The Bolt holes 15e are formed in the five fastening portions 15d of the rear head 15, and the rear muffler 18 is fastened to the rear head 15 through the bolt holes 15e. The five fastening portions 15d of the rear head 15 are portions that protrude radially inward around the bolt holes 15e, and are portions to which the five fastening portions of the rear muffler 18 are fastened.

  In addition, two ribs 51 and 52 that partition the second muffler space 19 are formed in the main body portion 15 b of the rear head 15. The two ribs 51 and 52 are formed integrally with the main body portion 15b of the rear head 15, and connect the boss portion 15a and the main body portion 15b. The front end surfaces of the two ribs 51 and 52 are arranged on substantially the same plane as the seal surface (including the area of the five fastening portions 15d) arranged on the entire outer periphery of the rear head 15, and the inner portions thereof. Is formed in a recess. Therefore, the second muffler space 19 is provided with a heat insulating space 53 that is difficult for refrigerant to enter by being partitioned by the two ribs 51 and 52. The heat insulating space 53 may be a space that is completely partitioned in the second muffler space 19 and into which the refrigerant does not enter, or communicates through a slight gap in the second muffler space 19 so that the refrigerant enters. It may be a difficult space. As shown in FIG. 5, the heat insulating space 53 is configured to overlap with the suction hole 32 of the rear cylinder 14 in plan view. A hatched portion in FIG. 5 indicates a range where the heat insulating space 53 and the suction hole 32 of the rear cylinder 14 overlap. In the present invention, the plan view shows a case where the compressor 1 is viewed from above or from below and is viewed from the axial direction of the crankshaft 8.

  FIG. 5 is a diagram (perspective view) for explaining the arrangement of the heat insulating space 53 and the suction holes 32 of the rear head 15. In FIG. 5, illustration of members such as the roller 35, the blade 36, and the discharge valve 50 is omitted. As shown in FIG. 5, the radially outer end portion 51 a of the rib 51 is disposed in a region between the suction hole 32 and the center line A <b> 1 of the blade accommodating portion 33 in plan view. In the present invention, the radial direction is a direction toward the axial center of the crankshaft 8 on a plane perpendicular to the axial center of the crankshaft 8 or a direction away from the axial center of the crankshaft 8 (radial direction in the horizontal section of the sealed container 2). Indicates. The region between the suction hole 32 and the center line A1 of the blade accommodating portion 33 may include a region in the suction hole 32 and a region in the blade accommodating portion 33. In addition, the rib 51 is inclined so as to pass through the center of the radially outer end portion 51a and away from the straight line A2 along the radial direction as it approaches the radially inner side from the radially outer end portion 51a in plan view ( Inclined away from the center line A1 of the blade accommodating portion 33). Accordingly, a part of the radially inner end 51b of the rib 51 passes through the center of the fastening portion 15d in the vicinity of the suction hole 32 on the side opposite to the blade accommodation portion 33 with respect to the suction hole 32 in a plan view. It is arranged on the opposite side to the suction hole 32 with respect to the straight line A3 along the radial direction. Further, the radially outer end 51a of the rib 51 and the radially outer end of the rib 52 are respectively disposed at positions away from the fastening portion 15d.

<Characteristics of the compressor of this embodiment>
The compressor 1 of this embodiment has the following characteristics.

  In the compressor 1 of the present embodiment, the second muffler space 19 is provided with a heat insulating space 53 that is difficult for refrigerant to enter, and the heat insulating space 53 overlaps with the suction hole 32 of the rear cylinder 14 in plan view. Therefore, the heat of the refrigerant discharged from the compression chamber 31 of the rear cylinder 14 to the second muffler space 19 is suppressed from being transmitted to the refrigerant in the suction hole 32. Therefore, the compression efficiency of the compressor 1 can be improved.

  In the compressor 1 of the present embodiment, the heat insulation space 53 is provided by inclining the ribs 51 for partitioning the heat insulation space 53 in the second muffler space 19 away from the blade accommodating portion 33 as it approaches the radially inner side. It is possible to prevent the space near the discharge hole 15c from becoming narrow in the second muffler space 19.

  In the compressor 1 of this embodiment, the rib 51 for partitioning the heat insulation space 53 in the second muffler space 19 is inclined so that the radially inner end portion 51b is separated from the discharge hole 15c, whereby the heat insulation space 53 is formed. When provided, it is possible to effectively suppress the space near the discharge hole 15c in the second muffler space 19 from being narrowed.

  In the compressor 1 of the present embodiment, the rib 51 is formed integrally with the rear head 15, so that the rib 51 can be easily formed.

  In the compressor 1 of this embodiment, since the rib 51 is a rib that connects the main body portion 15b and the boss portion 15a of the rear head 15, the strength of the end plate member can be increased.

(Second Embodiment)
Hereinafter, the compressor concerning a 2nd embodiment of the present invention is explained. The compressor according to the second embodiment is greatly different from the compressor according to the first embodiment in the range of the heat insulating space in the second muffler space between the rear head and the rear muffler. Since the other structure of the compressor concerning 2nd Embodiment is the same as that of the compressor concerning 1st Embodiment, detailed description is abbreviate | omitted.

<Rear head>
The rear head 115 has a boss portion 15a formed with an insertion hole through which the crankshaft 8 is rotatably inserted, and a main body portion 115b projecting radially outward from the outer peripheral surface on the upper side of the boss portion 15a. . As shown in FIG. 6, the main body 115 b is formed with a discharge hole 15 c for discharging the refrigerant compressed in the compression chamber 31 of the rear cylinder 14. As shown in FIG. 7, the discharge hole 15 c communicates with the high-pressure chamber of the compression chamber 31 on the side opposite to the suction hole 32 with respect to the center line A <b> 1 of the blade accommodating portion 33 in a plan view. A discharge valve 50 that opens and closes the outlet of the discharge hole 15c according to the pressure in the compression chamber 31 is attached to the lower surface of the main body 15b.

  A rear muffler 18 is attached below the rear head 115. A second muffler space 19 is formed between the rear head 115 and the rear muffler 18. The second muffler space 19 communicates with the high pressure chamber of the compression chamber 31 through the discharge hole 15 c of the rear cylinder 14. The second muffler space 19 is provided in order to reduce noise accompanying refrigerant discharge.

  Five fastening portions (not shown) fastened to the rear head 115 are provided on the outer peripheral portion of the rear muffler 18, and the fastening portions are fastened to the five fastening portions 15 d provided on the outer peripheral portion of the rear head 115. The Bolt holes 15e are formed in the five fastening portions 15d of the rear head 115, and the rear muffler 18 is fastened to the rear head 115 via the bolt holes 15e. The five fastening portions 15d of the rear head 115 are portions protruding radially inward around the bolt holes 15e, and are portions to which the five fastening portions of the rear muffler 18 are fastened.

  In addition, two ribs 151 and 52 that partition the second muffler space 19 are formed in the main body 115 b of the rear head 115. The two ribs 151 and 52 are integrally formed with the main body 115b of the rear head 115, and connect the boss 15a and the main body 115b. The tip surfaces of the two ribs 151 and 52 are arranged on substantially the same plane as the seal surface (including the region of the five fastening portions 15d) arranged on the entire outer periphery of the rear head 115, and the inner portions thereof. Is formed in a recess. Therefore, the second muffler space 19 is provided with a heat insulating space 153 that is difficult for the refrigerant to enter by being partitioned by the two ribs 151 and 52. The heat insulating space 153 may be a space that is completely partitioned in the second muffler space 19 and into which the refrigerant does not enter, or is communicated through a slight gap in the second muffler space 19 so that the refrigerant enters. It may be a difficult space. As shown in FIG. 7, the heat insulating space 153 is configured to overlap with the suction hole 32 of the rear cylinder 14 in plan view. 7 indicates a range where the heat insulating space 153 and the suction hole 32 of the rear cylinder 14 overlap.

  FIG. 7 is a diagram (perspective view) for explaining the arrangement of the heat insulating space 153 and the suction holes 32 of the rear head 115. In FIG. 7, illustration of members such as the roller 35, the blade 36, and the discharge valve 50 is omitted. As shown in FIG. 7, the radially outer end 151 a of the rib 151 is disposed in a region between the suction hole 32 and the center line A <b> 1 of the blade accommodating portion 33 in plan view. The region between the suction hole 32 and the center line A1 of the blade accommodating portion 33 may include a region in the suction hole 32 and a region in the blade accommodating portion 33. Moreover, the rib 151 is arrange | positioned along a radial direction in planar view. Further, the radially outer end portion 151a of the rib 51 and the radially outer end portion of the rib 52 are respectively disposed away from the fastening portion 15d.

<Characteristics of the compressor of this embodiment>
The compressor of this embodiment has the following characteristics.

  In the compressor of the present embodiment, the second muffler space 19 is provided with a heat insulating space 153 that is difficult for refrigerant to enter, and the heat insulating space 153 overlaps with the suction hole 32 of the rear cylinder 14 in plan view. As a result, the heat of the refrigerant discharged from the compression chamber 31 of the rear cylinder 14 to the second muffler space 19 is suppressed from being transmitted to the refrigerant in the suction hole 32. Therefore, the compression efficiency of the compressor can be improved.

  As mentioned above, although embodiment of this invention was described based on drawing, it should be thought that a specific structure is not limited to these embodiment. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes meanings equivalent to the scope of claims for patent and all modifications within the scope.

  In the above-described embodiment, the second muffler space 19 is provided with the heat insulation space 53 in which the refrigerant does not easily enter, and the heat insulation space 53 is configured to overlap the suction hole 32 of the rear cylinder 14 in plan view. However, the first muffler space 17 is provided with a heat insulating space in which the refrigerant is difficult to enter, and the heat insulating space may be configured to overlap the suction hole of the front cylinder 12 in plan view. .

  In the above-described embodiment, the case where the heat insulating spaces 53 and 153 are configured to overlap with a part of the suction hole 32 of the rear cylinder 14 in a plan view has been described. It may be configured to overlap all of the 14 suction holes 32. Therefore, the arrangement of the ribs (partition members) can be changed, and the range in which the heat insulating space overlaps the cylinder suction hole in plan view may be changed. Thus, when the heat insulating space overlaps at least a part of the suction hole of the cylinder in plan view, the effect of the present invention is obtained.

  In the above-described embodiment, the case where the ribs 51 and 52 are configured integrally with the rear head 15 has been described, but the ribs 51 and 52 may be configured by a member different from the rear head 15.

  In the above-described embodiment, the partition member is the ribs 51 and 52 that connect the boss portion 15a and the main body portion 15b. However, the partition member is a rib that connects the boss portion 15a and the main body portion 15b. It may be a different member.

  In the above-described embodiment, the case where the roller 35 and the blade 36 are a part of the piston 34 integrally formed has been described. However, the roller and the blade may be separate. In this case, the blade of the present invention may be referred to as a vane, and a spring that presses the blade toward the inside of the compression chamber is disposed in the blade accommodation hole, and the blade is pressed by the spring. It is pressed toward the outer peripheral surface of the roller by pressure.

  If the present invention is used, the compression efficiency of the compressor can be improved.

1 Compressor 11 Front Head 12 Front Cylinder 13 Middle Plate 14 Rear Cylinder
15, 115 Rear head (end plate member)
15a body part 15b boss part 15c discharge hole 15d fastening part 17 first muffler space (muffler space)
19 Second muffler space (muffler space)
16 Front muffler 18 Rear muffler (muffler member)
21, 31 Compression chamber 32 Suction hole 51, 151 Rib (partition member)
52 Ribs (partition members)
53, 153 Thermal insulation space 35 Roller 36 Blade 33 Blade housing portion 51a, 151a Radial outer end 51b of partition member Radial inner end of partition member

Claims (5)

A cylinder formed with a compression chamber;
An end plate member disposed on an end surface of the cylinder;
A muffler member disposed on an end surface of the end plate member opposite to the cylinder and forming a muffler space with the end plate member;
The cylinder has a suction hole for supplying a refrigerant to the compression chamber;
The muffler space is provided with a heat insulating space that is partitioned by a partition member and is difficult for refrigerant to enter,
The compressor, wherein the heat insulation space overlaps with the suction hole in a plan view. Inside the compression chamber, a roller and a blade that are divided into a suction chamber and a discharge chamber are arranged,
The cylinder is disposed on the radially outer side of the compression chamber, and has a blade accommodating portion for moving the blade forward and backward.
The end plate member has a discharge hole communicating with the compression chamber on a side opposite to the suction hole with respect to the center line of the blade housing portion in a plan view.
The partition member is arranged in a region between the suction hole and the center line in a plan view, and passes through the radially outer end as it approaches the radially inner side in a plan view. The compressor according to claim 1, wherein the compressor is inclined so as to be separated from a straight line along a radial direction. The muffler member is fastened to the end plate member at a fastening portion in the vicinity of the suction hole on the side opposite to the blade accommodation portion with respect to the suction hole in a plan view,
The radial inner end of the partition member is disposed on the opposite side of the suction hole with respect to a straight line passing through the fastening portion and in the radial direction in a plan view. Compressor.   The compressor according to any one of claims 1 to 3, wherein the partition member is configured integrally with the end plate member. The end plate member has a main body part and a boss part protruding from the main body part,
The compressor according to claim 4, wherein the partition member is a rib that connects the main body portion and the boss portion.

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