compressor

Abstract

This invention relates to a compressor. The compressor includes: a housing; an electric motor disposed inside the housing, having a crankshaft, a rotor coupled to the crankshaft, and a stator surrounding the rotor; a compression unit including a cylinder block disposed inside the housing, a piston configured to reciprocate within the cylinder block, and a connecting rod connecting the crankshaft and the piston; a fastening member passing through the stator and the cylinder block; and a vibration damper mounted on one end of the fastening member protruding from the cylinder block. Thus, the vibration damper protects the compressor body from external impacts by preventing direct collision between the drive motor and the compression unit (which are the main body of the compressor) and the housing due to vibrations occurring during compressor operation.

Description

Technical Field

[0001] The present invention relates to a compressor, specifically, to a reciprocating compressor having a shock absorber capable of protecting the body inside the housing from external impacts. Background Technology

[0002] A compressor is a device that has an electric part and a compression part, and compresses the refrigerant that has passed through the evaporator in a refrigeration and air conditioning unit such as a refrigerator or air conditioner, and then transfers the compressed refrigerant to the condenser.

[0003] Compressors can be classified into open-type and closed-type based on their sealing structure.

[0004] A hermetic compressor houses the electric motor and compressor within a completely sealed housing (also called a "shroud").

[0005] Compressors can be classified according to the way they compress refrigerant, such as reciprocating, rotary, vane, and scroll compressors.

[0006] The compression section of a reciprocating compressor includes a piston and a connecting rod. The piston reciprocates inside the cylinder block. The connecting rod converts the rotational motion of the crankshaft, which is pressed into the rotor, into linear motion.

[0007] The piston can receive power from the connecting rod and compress the refrigerant stored in the cylinder block to a preset pressure.

[0008] Existing patent document EP3730789B1 (published on October 28, 2020; hereinafter referred to as patent document 1) discloses a refrigerant compressor.

[0009] According to Patent Document 1, a reciprocating refrigerant compressor includes a block disposed inside the housing, a protrusion protruding from the upper side of the block, and a vibration damper surrounding the protrusion.

[0010] The vibration damper can act as a buffer to prevent collisions between the protrusion and the housing caused by the vibration of the block when the compressor is driven.

[0011] Two vibration dampers are provided at the front and two at the rear of the block. The front and rear vibration dampers are connected to the upper end of the drive unit. The inner surface of the housing has an upper contact portion, a front and rear contact portion, and a side contact portion that contact the vibration dampers.

[0012] The upper contact portion, front and rear contact portions, and side contact portions of the housing are characterized in that they are arranged parallel to each other on the outer surface of the shock absorber.

[0013] Existing patent document EP3283767B1 (published on September 26, 2020; hereinafter referred to as patent document 2) discloses a refrigerant compressor.

[0014] According to Patent Document 2, a refrigerant compressor includes a vibration damping device to reduce noise. The vibration damping device includes an outer element and an inner element. The outer element is formed to surround the inner element.

[0015] The internal element is connected to the drive device. The internal element is configured to support the vibration damping device.

[0016] The external element is made of a material such as rubber, thereby playing a vibration damping role in reducing the impact when it collides with the internal element.

[0017] However, the internal elements are joined through the cylinder block but not through the stator.

[0018] In the case where the internal elements only penetrate the structure of the cylinder block, the diameter of the cylinder block needs to be larger than the diameter of the stator, or the structure of the cylinder block needs to surround the stator, thus creating the problem of increasing the diameter (size) of the compressor.

[0019] In addition, additional internal elements are required to support the vibration damping device, which results in an increased number of components. Summary of the Invention

[0020] The purpose of this invention is to provide a reciprocating compressor with a vibration damper having a structure that can solve the above-mentioned problems.

[0021] The primary objective is to provide a reciprocating compressor with a structure that eliminates the need for additional components to support the vibration damper.

[0022] The second objective is to provide a reciprocating compressor with a vibration damper that has a structure that can reduce costs.

[0023] The third objective is to provide a reciprocating compressor with a vibration damper that has a structure that minimizes the number of components.

[0024] The fourth objective is to provide a reciprocating compressor with a structure that prevents the shock absorber from detaching due to impacts during use.

[0025] The fifth objective is to provide a reciprocating compressor with a simple vibration damper.

[0026] Through the inventor's in-depth research, the subject matter of this invention and the aforementioned first to fourth objectives can be achieved through the following embodiments of this invention.

[0027] To achieve the above objectives, the compressor of the present invention includes: a housing; an electric motor disposed inside the housing, having a crankshaft, a rotor coupled to the crankshaft, and a stator surrounding the rotor; a compression unit including a cylinder block disposed inside the housing, a piston configured to reciprocate inside the cylinder block, and a connecting rod connected to the crankshaft and the piston; a fastening member passing through the stator and the cylinder block and coupled thereto; and a vibration damper mounted on one end of the fastening member protruding from the cylinder block.

[0028] Thus, the damper is fixed to the end of a portion that further extends the length of the existing stator fastening member that secures the stator and cylinder block, thereby eliminating the need for additional components for fixing the damper and minimizing the number of components.

[0029] In one example, the fastening member may be made of an iron-based material. The vibration damper may be made of a rubber material.

[0030] Therefore, the fastening member can improve the support strength of the vibration damper. The vibration damper can protect the compressor body, such as the compression section and the electric section, from external impacts.

[0031] According to one example, the fastening component can be implemented with bolts.

[0032] Therefore, the assembly of the vibration damper is easy.

[0033] According to one example, the shock absorber may be configured to be spaced apart from the inner side of the housing by a predetermined interval in at least one of the vertical, front-back, and left-right directions.

[0034] Therefore, the shock absorber can buffer the impact even if it collides with the housing due to vibrations generated during the operation of the compressor.

[0035] According to one example, the damper may be a rear damper disposed on the rear side of the cylinder block in a direction away from the piston that moves to compress the refrigerant drawn into the compression chamber of the cylinder block.

[0036] Therefore, the shock absorber can attenuate external impacts when a collision occurs between the rear side of the cylinder block and the rear side of the housing.

[0037] According to one example, the housing includes a first housing and a second housing combined to cover the upper part of the first housing.

[0038] The fastening member can protrude upward from one side of the cylinder block, and the height of the shock absorber protruding from one side of the cylinder block can be greater than or equal to the distance between the top surface of the shock absorber and the inner side of the housing.

[0039] Therefore, even if the press-fitting surface of the damper to the fastening member becomes loose, the damper can still be prevented from being disassembled by external impact by being locked in the housing.

[0040] According to one example, an insertion portion may be provided at one end of the fastening member that protrudes from the cylinder block.

[0041] An accommodating portion may be formed inside the shock absorber for the insertion portion to be pressed into and engaged.

[0042] Thus, the insertion part can guide the press-fitting of the shock absorber and the fastening member by being inserted into the receiving part.

[0043] According to one example, the fastening member may also include an inclined chamfer at the end of the insertion portion.

[0044] The damper may also include a buffer space that surrounds the fastening member, spaced apart from the chamfer.

[0045] Therefore, the chamfer minimizes the risk of tearing caused by impacts from the corners of the fastening member to the damper. The buffer space provides room for the fastening member to move further inwards towards the damper, thus maximizing the damping effect of the damper.

[0046] According to one example, the buffer space may further include an inclined portion that is close to at least one side of the chamfer.

[0047] Thus, the shock absorber can utilize the inclined portion to buffer impacts by moving relative to the inclined portion in a state of contact with the end corner of the fastening member along the inclined direction.

[0048] According to one example, a stress dispersion hole may be formed through the upper part of the shock absorber toward the receiving part.

[0049] Therefore, the stress dispersion hole can disperse the stress of the vibration damper when the vibration damper is pressed against the fastening member.

[0050] According to one example, an anti-detachment groove may be formed around the periphery of the fastening member protruding in the cylinder block.

[0051] On the side of the shock absorber that is in close contact with the cylinder block, there may be an anti-detachment protrusion to engage with the anti-detachment groove.

[0052] Therefore, the anti-detachment protrusion can be inserted into the anti-detachment groove to prevent the shock absorber from detaching from the cylinder block.

[0053] According to one example, a first tapered portion inclined toward the inside of the anti-detachment groove may be formed on the outer peripheral surface of the anti-detachment protrusion. A second tapered portion whose diameter decreases as it approaches the anti-detachment groove is formed on the inner peripheral surface of the receiving portion.

[0054] Thus, the first tapered portion can be guided into the anti-disengagement groove. The second tapered portion, together with the receiving portion (first-stage press-in), can form a second-stage press-in of the fastening member.

[0055] According to one example, the fastening member may include: a first fastening member that passes through the stator and is fastened to a portion of the inner side of the cylinder block; and a second fastening member that is arranged on the same line as the first fastening member and is press-fitted into another portion of the inner side of the cylinder block.

[0056] The vibration damper can be integrated with the second fastening member.

[0057] Thus, the second fastening member is an additional connecting structure for fastening the shock absorber to the cylinder block, but the fastening and assembly of the shock absorber is easy.

[0058] According to one example, the shock absorber and the second fastening member may be made of different materials and may be combined into one unit.

[0059] Therefore, the shock absorber and the second fastening member can be manufactured as a single unit and then assembled onto the cylinder block by pressing.

[0060] According to one example, a radially protruding connecting protrusion may be formed on the inner circumferential surface of the shock absorber.

[0061] A groove may be recessed on the outer peripheral surface of the fastening member to engage with the engagement protrusion.

[0062] Therefore, the engagement protrusion of the shock absorber and the engagement groove of the fastening member can fit together to prevent the shock absorber from falling off.

[0063] According to another example, a radially recessed joint groove can be formed on the inner circumferential surface of the shock absorber.

[0064] The outer peripheral surface of the fastening member may have a protruding engagement protrusion for engaging with the engagement groove.

[0065] Therefore, the engagement groove of the shock absorber and the engagement protrusion of the fastening member can be fitted together to prevent the shock absorber from falling off.

[0066] According to embodiments of the present invention, the following effects can be achieved.

[0067] First, the fastening component can fasten the stator of the electric motor and the cylinder block of the compressor. The fastening component can be implemented with bolts. The bolts fastening the stator and the cylinder block can be named stator bolts. A single bolt can penetrate both the stator and the cylinder block for connection. The fastening component can be made of ferrous material.

[0068] One end of the fastening member can protrude from one side of the cylinder block. The damper can be press-fitted into the protruding end of the fastening member. Thus, by pressing the damper into the stator fastening member, which further extends to protrude from one side of the cylinder block, the damper can be secured to the existing stator fastening member even without additional components.

[0069] The vibration damper can be made of an elastic material such as rubber. One end of the fastening member can form an insertion portion that is inserted into the inside of the vibration damper. A receiving portion is formed inside the vibration damper so that the insertion portion is received inside the vibration damper. The diameter of the receiving portion can be slightly smaller than or equal to the diameter of the insertion portion. The receiving portion of the vibration damper can be press-fitted with the insertion portion.

[0070] Therefore, even without additional connecting structures, the vibration damper can be directly assembled to the fastening member. The vibration damper protects the compressor body from external impacts by preventing vibrations generated during compressor operation from causing direct collisions between the drive motor and compression unit, which constitute the compressor body, and the housing.

[0071] Second, the vibration damper can be configured to be spaced apart from the inner surface of the compressor housing. The bottom surface of the vibration damper is in close contact with the top surface of the cylinder block, and the vibration damper can extend from the top surface of the cylinder block to protrude upwards. The height of the vibration damper can be greater than the gap between the top surface of the vibration damper and the upper surface of the inner surface of the housing.

[0072] Therefore, even if the damper and the fastening member become loose due to reasons such as collision between the damper and the housing, the damper can be prevented from being disassembled by locking it on the upper side of the housing.

[0073] Third, an anti-detachment protrusion protruding towards the cylinder block can be formed on the bottom surface of the shock absorber. An anti-detachment groove can be formed on the top surface of the cylinder block. The anti-detachment protrusion can be inserted into the anti-detachment groove.

[0074] Therefore, by combining the anti-detachment protrusion and the anti-detachment groove, the vibration generated during the operation of the compressor can be prevented from causing the damper to detach from the top surface of the cylinder block.

[0075] Fourth, a first conical portion can be formed obliquely on the outer peripheral surface of the anti-detachment protrusion. This first conical portion can guide the tight fit between the bottom surface of the shock absorber and the top surface of the cylinder block.

[0076] Fifth, a second tapered portion inclined radially inward can be formed on the inner circumferential surface of the receiving portion of the shock absorber. Therefore, when the insertion portion of the fastening member is received in the receiving portion of the shock absorber, the second tapered portion can guide the secondary press-in engagement together with the receiving portion. For example, the first-stage press-in can be guided by the diameter of the receiving portion being slightly smaller than the diameter of the fastening member, and the second-stage press-in can be guided by the diameter of the second tapered portion being smaller than the diameter of the receiving portion, utilizing the difference in diameter between the two.

[0077] Sixth, a connecting protrusion protruding radially inward may be formed on the inner circumferential surface of the receiving portion of the shock absorber. A connecting groove recessed radially inward may be formed on the outer circumferential surface of the fastening member. Alternatively, a connecting groove recessed radially outward may be formed on the inner circumferential surface of the receiving portion of the shock absorber. A connecting protrusion protruding radially outward may be formed on the outer circumferential surface of the fastening member.

[0078] Therefore, by combining the protrusion with the groove, the vibration damper can be minimized from detaching from the fastening component. Attached Figure Description

[0079] Figure 1 This is a perspective view of a compressor according to an embodiment of the present invention.

[0080] Figure 2 yes Figure 1 The cross-sectional view of the compressor is a conceptual diagram showing the internal components of the compressor.

[0081] Figure 3 It is along Figure 1 The cross-sectional view along line III-III is a conceptual diagram showing the state of the damper moving toward the inner side of the housing in the vertical and longitudinal directions when the cylinder block is moving.

[0082] Figure 4 yes Figure 3 Exploded view of the vibration damper and fastening components.

[0083] Figure 5 It is shown Figure 4 A conceptual diagram showing a state where the height of the damper is greater than the distance between the top surface of the damper and the inner surface of the housing.

[0084] Figure 6 It is shown Figure 3 A conceptual diagram showing the contact state between the housing of the shock absorber and the end of the bolt.

[0085] Figure 7 It is shown Figure 6 A conceptual diagram showing the state in which the vibration damper and fastening components are separated from each other.

[0086] Figure 8It is shown Figure 7 A conceptual diagram showing a state where the height of the shock absorber is greater than the distance between the top surface of the shock absorber and the inner surface of the housing.

[0087] Figure 9 It is shown in Figure 6 The concept diagram omits the anti-detachment protrusion on the bottom surface of the shock absorber.

[0088] Figure 10 This is a conceptual diagram showing the state of fastening the shock absorber to the cylinder block by adding additional fastening components, rather than the shock absorber being directly assembled to the stator fastening components.

[0089] Figure 11 It is shown in Figure 6 A conceptual diagram showing a shock absorber with a connecting protrusion in the receiving part and a connecting groove in the insertion part of the fastening member.

[0090] Figure 12 It is shown in Figure 6 A conceptual diagram showing a shock absorber with a mating groove in its receiving part and a mating protrusion in the insertion part of the fastening member.

[0091] Explanation of reference numerals in the attached figures

[0092] 100: Shell 101: Upper Shell

[0093] 102: Lower housing 103: Spring

[0094] 104: First support section 105: Second support section

[0095] 110: Drive motor 111: Stator

[0096] 112: Stator core; 113: First through hole

[0097] 114: Stator coil; 115: Rotor

[0098] 116: Rotor core; 117: Rotor rod

[0099] 118a: First end ring; 118b: Second end ring

[0100] 119: Crankshaft 120: Oil Flow Path

[0101] 121: Oil flow channel 122: Oil pump

[0102] 123: Eccentric shaft 124: Counterweight

[0103] 125: Connecting rod; 126: Eccentric shaft joint.

[0104] 127: Piston joint 128: Connecting pin

[0105] 130: Compression section; 131: Cylinder block

[0106] 132: Frame; 133: Stator joint.

[0107] 134: Second through hole; 135: Shaft support section

[0108] 136: Cylinder barrel; 137: Compression chamber

[0109] 138: Piston; 140: Valve assembly

[0110] 141: Valve plate; 142: Suction valve

[0111] 143: Discharge valve 144: Discharge cap

[0112] 145: Inhalation silencer 146: Inhalation tube

[0113] 147: Exhaust silencer 148: Exhaust pipe

[0114] 149: Circuit pipe; 150: Fastening component

[0115] 151: Insertion part 152: Chamfer

[0116] 153: Vibration damper; 154: Receiving part

[0117] 155: Anti-detachment protrusion; 1551: First conical part

[0118] 156: Anti-detachment groove; 157: Second conical part

[0119] 158: Buffer space section 159: Inclined section

[0120] 160: Stress dispersion hole; 106: Curved surface area

[0121] 253: Vibration damper; 254: Receiving part

[0122] 259: Inclined section 2591: Uppermost end

[0123] 261: Inclined surface; 353: Vibration damper

[0124] 450: Fastening component; 451: First fastening component

[0125] 452: Second fastening component; 453: Vibration damper

[0126] 550: Fastening component; 551: Insertion part

[0127] 5511: Joint groove; 553: Vibration damper

[0128] 5531: Combined protrusion; 554: Receiving part

[0129] 650: Fastening component; 651: Insertion part

[0130] 6511: Combined with protrusion; 653: Vibration damper

[0131] 6531: Connecting groove; 654: Receiving section Detailed Implementation

[0132] Hereinafter, a reciprocating compressor with a vibration damper according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0133] In the following description, descriptions of certain components may be omitted to make the features of the invention clear.

[0134] 1. Definition of terms

[0135] Terms containing ordinal numbers such as "first" and "second" may be used to describe various constituent elements, but the constituent elements are not limited by the terms. The terms are used only for the purpose of distinguishing one constituent element from other constituent elements.

[0136] If a constituent element is mentioned as being "connected" or "linked" to another constituent element, it should be understood that it may be directly connected or linked to that other constituent element, but there may also be other constituent elements between them. Conversely, if a constituent element is mentioned as being "directly connected" or "directly linked" to another constituent element, it should be understood that there are no other constituent elements between them.

[0137] Unless the context clearly indicates a different meaning, the singular expressions used in this specification include the plural expressions.

[0138] In the following description, “radial” or “radial shape” refers to a shape that extends outward from the center point like spokes of a wheel.

[0139] In the following description, "axial" refers to the length direction of the crankshaft.

[0140] In the following description, "axial" can refer to the vertical direction.

[0141] In the following description, “radial” refers to the length direction of a line segment from the center of a circle or cylinder to a point on the circumference.

[0142] In the following description, "circumferential direction" refers to the circumference of the circle.

[0143] In the following description, the crankshaft refers to the shaft that converts rotational motion into linear motion, primarily the shaft used to move the piston.

[0144] The journals used in the following description are shaft parts supported by bearings, etc.

[0145] 2. Description of the configuration of a compressor according to an embodiment of the present invention

[0146] In this embodiment, the compressor can be a hermetic compressor.

[0147] In this embodiment, the compressor can be a reciprocating compressor. However, it is not limited to this.

[0148] Figure 1 This is a perspective view of a compressor according to an embodiment of the present invention.

[0149] Figure 2 yes Figure 1 The cross-sectional view of the compressor is a conceptual diagram showing the internal components of the compressor.

[0150] Figure 3 It is along Figure 1 The cross-sectional view along line III-III is a conceptual diagram showing the state in which the damper 153 moves toward the inner side of the housing 100 in the vertical and longitudinal directions when the cylinder block 131 moves.

[0151] Figure 4 yes Figure 3 Exploded view of the shock absorber 153 and fastening member 150.

[0152] Figure 5 It is shown Figure 4 A conceptual diagram showing a state where the height B of the intermediate damper 153 is greater than the distance between the top surface of the damper 153 and the inner surface of the housing 100.

[0153] The compressor in this embodiment may include a housing 100, a compression section 130, and an electric motor. The electric motor may be implemented by a drive motor 110.

[0154] The housing 100 forms the exterior of the compressor. An accommodating space is provided inside the housing 100. The accommodating space of the housing 100 can be configured to be sealed.

[0155] The housing 100 can accommodate the compression unit 130 and the drive motor 110.

[0156] The housing 100 may include a lower housing 102 and an upper housing 101.

[0157] The lower housing 102 can be formed in a semi-cylindrical or hemispherical shape. The lower housing 102 is disposed below the upper housing 101. The lower housing 102 can be formed to open upwards. The lower housing 102 can be referred to as the first housing.

[0158] The upper housing 101 is combined to cover the upper part of the lower housing 102. The upper housing 101 can be referred to as the second housing.

[0159] Thus, the upper shell 101 and the lower shell 102 can seal the accommodating space of the shell 100.

[0160] The drive motor 110 may include a stator 111 and a rotor 115.

[0161] The stator 111 can be accommodated in the receiving space of the housing 100. The stator 111 can be elastically supported relative to the bottom surface of the lower housing 102.

[0162] For example, the stator 111 can be elastically supported by the spring 103. The elastic support mechanism that elastically supports the lower part of the stator 111 may include the spring 103, the first support part 104, and the second support part 105.

[0163] Spring 103 may be a helical spring. First support portion 104 may be fixed to the bottom surface of lower housing 102. First support portion 104 may be formed in a cylindrical shape. A first flange portion that protrudes radially to support the lower end of spring 103 may be provided on the outer periphery of first support portion 104.

[0164] The second support portion 105 can be fixed to the bottom surface of the stator 111. The second support portion 105 can be configured to surround the head of the fastening member 150 described later. A receiving groove for accommodating the head of the fastening member 150 can also be provided inside the second support portion 105.

[0165] A second flange portion may be provided on the outer periphery of the second support portion 105, which protrudes radially to support the upper end of the spring 103.

[0166] Therefore, spring 103 can elastically support stator 111. Spring 103 can suppress the vibration generated during compressor operation from being directly transmitted to housing 100.

[0167] The rotor 115 can be rotatably disposed inside the stator 111.

[0168] The stator 111 may include a stator core 112 and a stator coil 114.

[0169] The stator core 112 can be formed by stacking and combining a plurality of electrical steel sheets. The stator core 112 can be formed in a quadrangular shape.

[0170] The stator core 112 can be formed with a back yoke, a plurality of teeth, and a plurality of slots. The back yoke can be formed in a circular ring shape.

[0171] The teeth can be formed to protrude radially from the inner side of the back yoke. The slots can be formed in the stator 111 to extend axially.

[0172] A plurality of teeth and a plurality of slots can be arranged alternately in the circumferential direction. An pole shoe can be provided at the inner end of the tooth. The pole shoe can be formed to protrude laterally from the inner end of the tooth along the circumferential direction. The radial thickness of the pole shoe can be formed between the radially outer and inner surfaces of the pole shoe.

[0173] The stator coil 114 can be wound around the stator core 112 through the slot.

[0174] The stator core 112 can be fixed to the bottom surface of the cylinder block 131 by a fastening member 150. The fastening member 150 can be implemented with bolts or screws.

[0175] The fastening member 150 can pass through the stator core 112 and the cylinder block 131 described later and be engaged.

[0176] A first through hole 113 can be formed through the interior of the stator core 112. A second through hole 134 can be formed through the interior of the cylinder block 131. The fastening member 150 can pass through the first through hole 113 and the second through hole 134.

[0177] Alternatively, the fastening member 150 may pass through the first through hole 113 but not through the second through hole 134, and a portion of the fastening member 150 may be accommodated in the second through hole 134.

[0178] In this embodiment, the fastening member 150 is shown to pass through the first through hole 113 and the second through hole 134 and protrude upward from the top surface of the cylinder block 131.

[0179] The fastening members 150 can be provided in a plurality of manner to fasten the stator core 112 and the cylinder block 131. For example, two fastening members 150 can be provided in front of the stator core 112 and two in rear of the cylinder block 131, for a total of four fastening members. The plurality of fastening members 150 can be arranged spaced apart in the front-back direction and the left-right direction.

[0180] A rotor receiving hole may be formed axially on the inner side of the stator core 112. The rotor receiving hole may be formed in a cylindrical shape. The stator 111 may be configured to surround the rotor 115. The rotor 115 may be received in the rotor receiving hole of the stator core 112.

[0181] The rotor 115 may include a rotor core 116 and a plurality of permanent magnets or a plurality of rotor rods 117. This embodiment shows a state in which a plurality of rotor rods 117 are mounted inside the rotor core 116.

[0182] The rotor core 116 can be formed by stacking and combining a plurality of electrical steel sheets. The rotor core 116 can be formed in a cylindrical shape.

[0183] A first shaft hole may be formed axially through the center of the rotor core 116. The first shaft hole may be located in the lower part of the rotor core 116. The lower part of the rotor core 116 may be press-fitted into at least a portion of the crankshaft 119 using the first shaft hole.

[0184] The crankshaft 119 can be coupled to the rotor core 116 through the first shaft hole.

[0185] A rotor rod receiving hole can be formed axially through the inner side of the rotor core 116. The rotor rod 117 can extend axially. The rotor rod 117 can be formed of a conductor such as aluminum or aluminum alloy.

[0186] The rotor rod 117 can be axially inserted into and engaged with the interior of the rotor core 116 via a rotor rod receiving hole. A plurality of rotor rods 117 can be arranged spaced apart along the circumferential direction of the rotor core 116.

[0187] End rings 118a and 118b can extend in the circumferential direction. End rings 118a and 118b can prevent the rotor rod 117 from detaching from the rotor rod receiving hole axially. A first end ring 118a can be attached to the lower side of the rotor core 116. A second end ring 118b can be attached to the upper side of the rotor core 116.

[0188] Therefore, if an external power source is applied to the stator coil 114, a magnetic field can be formed around the stator coil 114. The rotor 115 can rotate by electromagnetic interaction with the stator 111. The drive motor 110 can generate power for the reciprocating motion of the compression section 130.

[0189] An eccentric shaft 123 is provided at the upper end of the crankshaft 119. The eccentric shaft 123 can be configured to be radially eccentric at the upper part of the crankshaft 119. A counterweight 124 protruding radially outward can be formed at the upper part of the crankshaft 119. The eccentric shaft 123 can protrude upward from one side of the counterweight 124.

[0190] The counterweight 124 can be positioned at the upper end of the crankshaft 119, with the crankshaft 119 as a reference, in the opposite direction to the eccentric shaft 123. The counterweight 124 can be a weight body. Thus, the counterweight 124 can balance the center of rotation of the eccentric shaft 123 with the crankshaft 119 as a reference.

[0191] A connecting rod 125 may be disposed between the drive motor 110 and the compression unit 130. The connecting rod 125 is configured to convert the rotational motion of the drive motor 110 into the reciprocating motion of the compression unit 130.

[0192] An eccentric shaft coupling portion 126 in the form of a ring can be formed at one end of the connecting rod 125. The eccentric shaft coupling portion 126 can surround the eccentric shaft 123. The eccentric shaft 123 and the eccentric shaft coupling portion 126 can be coupled to each other by the eccentric shaft 123 being accommodated inside the eccentric shaft coupling portion 126.

[0193] A ring-shaped piston engagement portion 127 may be formed at the other end of the connecting rod 125. The piston engagement portion 127 is configured to surround the connecting pin 128, which will be described later. The connecting pin 128 may engage with the inner side of the piston 138. The connecting pin 128 may pass through the piston engagement portion 127 in the vertical direction and engage with the piston engagement portion 127. The connecting rod 125 may engage with the piston 138.

[0194] Therefore, the eccentric shaft 123 can rotate together with the crankshaft 119 around the crankshaft 119. The connecting rod 125 can convert the rotational motion of the eccentric shaft 123 into the reciprocating motion of the piston 138.

[0195] The compression section 130 may include a cylinder block 131 and a piston 138.

[0196] The cylinder block 131 can be disposed on the upper side of the drive motor 110. The cylinder block 131 can be attached to the upper part of the stator 111 of the drive motor 110 and is elastically supported on the housing 100.

[0197] The cylinder block 131 may include a frame 132, a stator joint 133, a shaft support 135, and a cylinder 136.

[0198] The frame 132 can be formed to extend in a horizontal direction intersecting the axis. The frame 132 can be formed in a flat plate shape.

[0199] The stator joint 133 can be formed to protrude downward from the edge of the frame 132 toward the stator 111. The stator joint 133 can be fastened to the stator 111 by a fastening member 150. The cylinder block 131 can be fastened to the stator 111 by a fastening member 150 that passes through the stator joint 133.

[0200] Thus, the cylinder block 131 can be elastically supported together with the stator 111 in the lower housing 102.

[0201] The shaft support portion 135 can extend axially from the center portion of the frame 132. A shaft receiving hole can be formed axially through the inner side of the shaft support portion 135.

[0202] The crankshaft 119 is connected to the shaft support 135 through the shaft receiving hole, thereby allowing it to be rotatably mounted inside the frame 132.

[0203] A journal bearing may be disposed between the inner circumferential surface of the shaft support 135 and the outer circumferential surface of the crankshaft 119, or the journal bearing may be omitted. The journal bearing may be formed in a cylindrical shape. The inner circumferential surface of the journal bearing is configured to surround the outer circumferential surface of the crankshaft 119.

[0204] The inner circumferential surface of the journal bearing can be in surface contact with the outer circumferential surface of the crankshaft 119. The inner circumferential surface of the shaft support portion 135 is configured to surround the outer circumferential surface of the journal bearing. The outer circumferential surface of the journal bearing and the inner circumferential surface of the shaft support portion 135 can be in surface contact with each other.

[0205] Therefore, the journal bearing can support the crankshaft 119 so that the crankshaft 119 can rotate relative to the shaft support 135. The journal bearing can restrict the radial movement of the crankshaft 119.

[0206] Compared to existing ball bearings, journal bearings are relatively inexpensive, thus helping to reduce costs. In this embodiment, the journal bearing can be omitted. However, an oil film can be formed between the inner circumferential surface of the shaft support 135 and the outer circumferential surface of the crankshaft 119. Therefore, the shaft support 135 can function as a journal bearing.

[0207] An oil flow path 120 is formed inside the crankshaft 119. An oil flow path groove 121 formed along the spiral direction can be formed on the outer peripheral surface of the crankshaft 119. The oil flow path groove 121 can be connected to the oil flow path 120 to communicate.

[0208] An oil pump 122 may be provided at the lower end of the crankshaft 119. The upper end of the oil pump 122 may be connected to the oil flow path 120 of the crankshaft 119. The lower end of the oil pump 122 may be configured to be immersed in oil stored in the lower housing 102.

[0209] Thus, the oil pump 122 can draw in oil and supply it to the inner circumferential surface of the shaft support portion 135 through the oil flow path 120 and oil flow path groove 121 of the crankshaft 119.

[0210] The shaft support 135 can be accommodated in the second shaft hole of the rotor core 116. The second shaft hole can be formed with a larger diameter at the upper end of the first shaft hole of the rotor core 116.

[0211] The second shaft hole can accommodate at least a portion of the shaft support portion 135. The second shaft hole can form a radially outward step with the first shaft hole. The second shaft hole can be located on the upper part of the rotor core 116. A gap can be formed between the inner circumferential surface of the second shaft hole and the outer circumferential surface of the shaft support portion 135.

[0212] Therefore, the rotor core 116 can rotate relative to the shaft support 135.

[0213] Cylinder 136 is disposed on one side edge of frame 132. Cylinder 136 may be configured to be radially outward from the center of frame 132.

[0214] A cylindrical hollow portion is formed inside the cylinder barrel 136. The cylinder barrel 136 can extend radially relative to the crankshaft 119. The hollow portion can be formed to extend through the front and rear directions of the housing 100. The hollow portion can extend radially through the center of the frame 132.

[0215] A piston 138 can be accommodated inside the cylinder 136. It can be configured such that the rear side of the piston 138 is open, while the front side is closed. Here, the front side of the piston 138 is arranged in the opposite direction to the connecting rod 125 (described later), while the rear side of the piston 138 is arranged towards the connecting rod 125.

[0216] A connecting pin 128 may be provided on the rear side of the piston 138. The connecting pin 128 can engage with the piston engagement portion 127 of the connecting rod 125. Thus, the piston 138 can receive driving force from the drive motor 110 via the connecting rod 125.

[0217] A valve assembly 140 may be attached to the front side of the cylinder 136. The front side of the cylinder 136 is configured in the opposite direction to the connecting rod 125. The front side of the piston 138 may form a compression chamber 137 inside the cylinder 136 together with the valve assembly 140.

[0218] The intake and exhaust section may include a valve assembly 140, an intake muffler 145, and an exhaust muffler 147. The valve assembly 140 and the intake muffler 145 may be sequentially connected from the outer opening end of the cylinder 136.

[0219] The valve assembly 140 may include a valve plate 141, an intake valve 142, an exhaust valve 143, and an exhaust cover 144.

[0220] The valve plate 141 is configured to cover the front side opening of the compression chamber 137. The valve plate 141 can be fastened to the cylinder block 131.

[0221] The valve plate 141 may be provided with an intake port and a plurality of discharge ports. The intake port may be formed through the center of the valve plate 141. The discharge ports may be formed through the periphery of the intake port. The plurality of discharge ports may be arranged at predetermined intervals along the periphery of the intake port.

[0222] The suction valve 142 is rotatably mounted on the rear side of the valve plate 141 toward the piston 138. The suction valve 142 is configured to open and close the suction port. The suction valve 142 can elastically deform according to the pressure difference between the compression chamber 137 and the discharge chamber (described later).

[0223] The discharge valve 143 is rotatably mounted on the front side of the valve plate 141 in the opposite direction to the piston 138. The discharge valve 143 is configured to open and close the discharge port. The discharge valve 143 can elastically deform according to the pressure difference between the compression chamber 137 and the discharge chamber (described later).

[0224] The suction valve 142 and the discharge valve 143 can be selectively opened and closed in opposite directions. During the suction stroke of the piston 138, the suction valve 142 can be open while the discharge valve 143 is closed. Alternatively, during the discharge stroke of the piston 138, the suction valve 142 can be closed while the discharge valve 143 is open.

[0225] The discharge cover 144 can be fastened to the outer opening end of the cylinder block 131 to cover the compression chamber 137. The discharge chamber can be recessed on the inner side of the discharge cover 144.

[0226] An intake space can be formed inside the intake muffler 145. The inlet of the intake muffler 145 can be connected to the intake pipe 146 for communication, and the outlet of the intake muffler 145 can be connected to the intake side of the valve assembly 140 for communication.

[0227] The intake muffler 145 can be fixed to the valve assembly 140. The intake muffler 145 can be connected via the intake port of the valve plate 141. The intake muffler 145 can transfer the refrigerant drawn in through the intake pipe 146 to the compression chamber 137 of the cylinder 136.

[0228] The discharge muffler 147 can be configured to be detachable from the cylinder block 131. A discharge space can be formed inside the discharge muffler 147. The inlet of the discharge muffler 147 can be connected to the discharge side of the valve assembly 140.

[0229] The following describes the operation of the compressor.

[0230] If a power source is applied to the stator coil 114, a magnetic field is generated around the coil. The rotor 115 rotates relative to the stator 111 by the electromagnetic interaction between the stator 111 and the rotor 115.

[0231] The crankshaft 119 rotates together with the rotor 115. One side of the connecting rod 125 engages with the eccentric shaft 123 of the crankshaft 119 and rotates with the gyratory motion of the eccentric shaft 123. The other side of the connecting rod 125 engages with the piston 138, thereby repeatedly advancing and retracting radially along the crankshaft 119.

[0232] Piston 138 can reciprocate in the back-and-forth direction inside cylinder 136. If piston 138 retracts in cylinder 136, the volume of compression chamber 137 expands, and the pressure in compression chamber 137 decreases. Refrigerant filled into suction muffler 145 is drawn into compression chamber 137 through suction valve 142 of valve assembly 140.

[0233] Conversely, if the piston 138 advances in the cylinder 136, the volume of the compression chamber 137 is compressed, and the pressure rises. The refrigerant filling the compression chamber 137 is compressed, the discharge valve 143 of the valve assembly 140 opens, and the refrigerant is discharged into the discharge chamber of the discharge cover 144.

[0234] The discharged refrigerant repeatedly moves through the loop pipe 149 to the discharge space of the discharge muffler 147, and then is discharged again through the loop pipe 149 and the discharge pipe 148 into the refrigeration cycle.

[0235] However, because the piston 138 reciprocates within the compression chamber 137 of the cylinder 136 by receiving power from the drive motor 110 transmitted via the connecting rod 125, vibrations occur in the compression section 130 and the electric section. These vibrations may cause collisions between components.

[0236] For example, although the cylinder block 131 of the compression section 130 and the fastening member 150 of the stator 111 of the electric section can be elastically supported by the spring 103 to suppress the transmission of the vibration to the housing 100, it is impossible to avoid the collision between the cylinder block 131 and the stator 111 and the housing 100.

[0237] The present invention provides a vibration damper 153 structure that can minimize the transmission of vibrations from cylinder block 131 and stator 111 to housing 100.

[0238] The vibration damper 153 can be mounted on the fastening member 150. A plurality of fastening members 150 can be arranged along the edges of the stator 111 and the cylinder block 131. In this embodiment, a configuration with four fastening members 150 is shown.

[0239] The damper 153 can be respectively disposed on the front side and the rear side of the cylinder block 131. In this embodiment, the damper 153 is shown disposed on the rear side of the cylinder block 131 and spaced apart from the rear side of the housing 100.

[0240] In this embodiment, the shock absorber 153 can be named the rear shock absorber, as it is positioned on the rear side of the cylinder block 131 near the rear side of the housing 100.

[0241] The fastening member 150 can be combined into a stator joint 133 that extends axially through the stator 111 and the cylinder block 131. A first through hole 113 is formed on the inner side of the stator core 112 to fasten the fastening member 150. A second through hole 134 is formed on the inner side of the stator joint 133. The first through hole 113 and the second through hole 134 are configured to correspond axially.

[0242] The fastening member 150 may extend to protrude outward from the cylinder block 131 through the first through hole 113 and the second through hole 134. An insertion portion 151 may be provided at the end of the fastening member 150 that protrudes upward from the cylinder block 131. The shock absorber 153 may be installed in the insertion portion 151.

[0243] The fastening member 150 can be made of an iron-based material. Thus, the fastening member 150 can have sufficient strength to support the vibration damper 153.

[0244] The shock absorber 153 can be made of a different material than the fastening member 150. For example, the shock absorber 153 can be made of an elastic material such as rubber. Thus, the shock absorber 153 can protect the compression part 130 and the electric part disposed inside the housing 100 from external impact when they collide with the housing 100.

[0245] The vibration damper 153 can be press-fitted into the insertion portion 151 of the fastening member 150. The vibration damper 153 can be formed in a cylindrical shape. A receiving portion 154 is provided inside the vibration damper 153 to receive the insertion portion 151. The insertion portion 151 can be formed in a cylindrical shape. The receiving portion 154 can be formed in a cylindrical shape.

[0246] The receiving portion 154 can be formed as an axial recess in the center of the damper 153.

[0247] The receiving portion 154 has a diameter corresponding to the diameter of the insertion portion 151. For example, the diameter (inner diameter) of the receiving portion 154 may be slightly smaller than or equal to the diameter (outer diameter) of the insertion portion 151. Thus, the insertion portion 151 can be pressed into the receiving portion 154.

[0248] The damper 153 may include a first surface, a second surface, and an outer peripheral surface. The first surface and the second surface may each be formed as a plane. The first surface may be configured to face the cylinder block 131. The first surface may be configured to contact the top surface of the cylinder block 131.

[0249] The first surface is located on the underside of the shock absorber 153. This first surface can be named the bottom surface.

[0250] The second surface can be configured to face the upper surface of the inner surface of the housing 100. The second surface can be configured to be opposite to the first surface. The second surface can be configured to be separated from the upper surface of the housing 100 by a predetermined interval.

[0251] The height B of the damper 153 can be formed between the first and second surfaces of the damper 153. The second surface is located on the upper side of the damper 153. The second surface can be named the top surface.

[0252] The outer peripheral surface of the damper 153 can extend axially to connect the first and second surfaces of the damper 153. The outer peripheral surface of the damper 153 is a curved surface extending in the circumferential direction.

[0253] The height B of the shock absorber 153 refers to the distance from the top surface of the cylinder block 131 to the second surface of the shock absorber 153.

[0254] The height B of the damper 153 can be greater than or equal to the distance A between the upper side of the housing 100 and the second side of the damper 153. In this embodiment, a state is shown where the height B of the damper 153 is greater than the distance A between the upper side of the housing 100 and the top surface of the damper 153.

[0255] Therefore, even if the interference fit between the damper 153 and the fastening member 150 becomes loose, causing the damper 153 to move upward from the fastening member 150, the second side of the damper 153 can be locked in the housing 100 to prevent the damper 153 from falling off the fastening member 150.

[0256] The damper 153 may also include an anti-detachment protrusion 155. The anti-detachment protrusion 155 may be formed to protrude downward from a first surface of the damper 153. A receiving portion 154 may extend recessed from the first surface of the damper 153 toward a second surface.

[0257] The anti-detachment protrusion 155 can extend circumferentially around the receiving portion 154. The anti-detachment protrusion 155 can be formed in a cone shape. A communicating hole communicating with the receiving portion 154 is formed at the center of the anti-detachment protrusion 155.

[0258] A first tapered portion 1551 is formed at an incline on the outer peripheral surface of the anti-detachment protrusion 155. The first tapered portion 1551 can extend in the circumferential direction.

[0259] A downwardly recessed anti-detachment groove 156 may be formed on the top surface of the cylinder block 131. The anti-detachment groove 156 can accommodate the anti-detachment protrusion 155. The anti-detachment groove 156 may be formed with a shape and size corresponding to the anti-detachment protrusion 155.

[0260] The anti-detachment protrusion 155 can be inserted into and engaged with the anti-detachment groove 156. Thus, the damper 153 can be tightly fitted and engaged with the stator engagement portion 133 of the cylinder block 131. The anti-detachment protrusion 155 can suppress movement of the damper 153 on the top surface of the cylinder block 131.

[0261] The anti-detachment protrusion 155 can firmly maintain the connection and assembly state between the shock absorber 153 and the cylinder block 131.

[0262] The stator joint 133 can form the corner of the cylinder block 131 when the second through hole 134 is machined to fasten the fastening member 150. Thus, the damper 153 can avoid collision between the stator joint 133 forming the corner of the cylinder block 131 and the housing 100.

[0263] A second tapered portion 157 may be formed obliquely on the inner circumferential surface of the receiving portion 154. The second tapered portion 157 may extend in a circumferential direction along the inner circumferential surface of the receiving portion 154.

[0264] The location where the second conical portion 157 begins to form in the receiving portion 154 can be the lower part of the receiving portion 154. The location where the formation of the second conical portion 157 ends can be the inner end of the anti-detachment protrusion 155. The location where the formation of the second conical portion 157 ends can be the lower end of the receiving portion 154.

[0265] The second tapered portion 157 may be formed at the lower part of the receiving portion 154 such that its diameter decreases as it approaches the lower end of the receiving portion 154 or the inner end of the anti-detachment protrusion.

[0266] The receiving portion 154 may have a first diameter that is less than or equal to the diameter of the insertion portion 151. The second tapered portion 157 may have a second diameter that is smaller than the first diameter of the receiving portion 154.

[0267] Thus, the receiving portion 154 and the second conical portion 157 can form a two-stage press-in structure for the damper 153. The upper part of the insertion portion 151 of the fastening member 150 can form a first-stage press-in to the receiving portion 154, and the lower part of the insertion portion 151 of the fastening member 150 can form a second-stage press-in to the second conical portion 157.

[0268] Since the second tapered portion 157 has a smaller diameter than the receiving portion 154, the fastening force borne by the lower part of the insertion portion 151 of the fastening member 150 can be greater than the fastening force borne by the upper part of the insertion portion 151.

[0269] At one end of the insertion portion 151, for example, a chamfer 152 may be formed at the upper end of the insertion portion 151. The chamfer 152 may be formed to be inclined relative to the axial direction. The chamfer 152 may be formed to decrease in diameter as it approaches the end of the insertion portion 151. The chamfer 152 may extend along the circumferential direction of the fastening member 150.

[0270] A buffer space 158 may also be included on the upper inner side of the receiving portion 154. The buffer space 158 can form a space separating the damper 153 and the insertion portion 151. Thus, the buffer space 158 can form a space to avoid contact with the sharp end of the bolt. The buffer space 158 can prevent damage such as tearing of the damper 153 caused by collision between the damper 153 and the housing 100 when the electric part and the compression part 130 move.

[0271] The shock absorber 153 may also include an inclined portion 159. The inclined portion 159 may be formed to be inclined relative to the axial direction. The inclined portion 159 may be disposed at the upper end of the receiving portion 154. The inclined portion 159 may be disposed in the buffer space portion 158.

[0272] The inclined portion 159 may be formed at an angle corresponding to the chamfer 152 of the insertion portion 151 of the fastening member 150. The inclined portion 159 may be configured to be spaced apart from the chamfer 152 or to be in contact with it. In this embodiment, a state in which the inclined portion 159 is spaced apart from the chamfer 152 is shown in order to form the buffer space portion 158.

[0273] The damper 153 may also include stress dispersion holes. These stress dispersion holes may be formed through the upper portion of the damper 153. The stress dispersion holes may be connected to the receiving portion 154. The stress dispersion holes may be circular.

[0274] Therefore, the stress dispersion holes can disperse the stress in the damper 153 when it collides with the housing 100. In addition, the stress dispersion holes can suppress stress concentration in the damper 153 when it collides with the housing 100.

[0275] Figure 6 yes Figure 3 A conceptual diagram showing the state in which the receiving part 254 of the damper 253 is in contact with the end of the bolt.

[0276] Figure 7 It is shown Figure 6 A conceptual diagram showing the vibration damper 253 and the fastening member 150 separated from each other.

[0277] Figure 8 It is shown Figure 7 A conceptual diagram showing a state in which the height B of the damper 253 is greater than the distance between the top surface of the damper 253 and the inner surface of the housing 100.

[0278] This embodiment is the same as the above. Figures 1 to 5 The difference in the embodiment is that the receiving portion 254, which is pressed into the damper 253, contacts the end of the fastening member 150.

[0279] An inclined portion 259 is formed at the upper end of the receiving portion 254 of the shock absorber 253. A portion of the inclined portion 259 may be configured to contact a chamfer 152 formed at the upper end of the fastening member 150.

[0280] Therefore, since the inclined portion 259 contacts the chamfer 152, it is possible to prevent damage such as tearing of the damper 253 caused by collision between the damper 253 and the housing 100 when the compression portion 130 moves.

[0281] An uppermost end portion 2591 may be provided at the upper end of the inclined portion 259. The uppermost end portion 2591 of the inclined portion 259 may be formed as a plane. Another part of the inclined portion 259 may not contact the chamfer 152. The uppermost end portion 2591 of the inclined portion 259 may be configured to be spaced apart from the upper end portion of the chamfer 152 in the vertical direction.

[0282] Therefore, when the top surface of the shock absorber 253 collides with the inner side of the housing 100 in the vertical direction, the top surface of the shock absorber 253 can be pressed against the surface due to external impact.

[0283] The upper thickness T of the damper 253 is smaller than the radial width W of the damper 253. The radial width W of the damper 253 is relatively larger than the upper thickness T of the damper 253.

[0284] The upper thickness T of the damper 253 is formed between the uppermost end 2591 of the inclined portion 259 of the damper 253 and the second surface of the damper 253. The radial width W of the damper 253 refers to the radial width W between the inner peripheral surface of the receiving portion 254 and the outer peripheral surface of the damper 253, with the radial center of the damper 253 as a reference.

[0285] When the upper part of the shock absorber 253 collides with the inner side of the housing 100, the shock absorber 253 can absorb the impact as the chamfer 152 of the fastening member 150 moves upward along the inclined portion 259 of the shock absorber 253.

[0286] This embodiment is the same as the above. Figures 1 to 5 The difference in this embodiment is that the stress dispersion holes are omitted in the upper part of the damper 253. Therefore, by filling in the stress dispersion holes in the upper part of the damper 253, the rigidity of the damper 253 can be strengthened.

[0287] This embodiment is the same as the above. Figures 1 to 5 The difference between this embodiment and the previous one is that the diameter of the damper 253 in this embodiment can be larger than that of the previous one. Figures 1 to 5 The shock absorber 253 in the embodiment has a larger diameter.

[0288] As a result, the radial width W between the receiving portion 254 of the damper 253 and the outer peripheral surface is increased, thereby preventing damage such as tearing of the damper 253.

[0289] An inclined surface may also be provided between the second surface and the outer peripheral surface of the damper 253. The inclined surface of the damper 253 may be formed to be inclined at a predetermined angle relative to the outer peripheral surface of the damper 253. The inclined surface of the damper 253 may extend along the circumferential direction of the damper 253.

[0290] A curved surface 106 may be formed on the inner side of the housing 100 between the upper side and the rear side. The curved surface 106 may be formed by bending at a predetermined curvature. The inclined surface of the damper 253 may be formed such that it will not contact the inner side of the housing 100 regardless of whether the cylinder block 131 moves in the up-down, front-back, or left-right direction during movement.

[0291] Therefore, even if the second surface of the shock absorber 253 collides with the upper side of the housing 100 or the outer peripheral surface of the shock absorber 253 collides with the rear side of the housing 100, the inclined surface of the shock absorber 253 will not come into contact with the inner side of the housing 100, thereby minimizing damage such as tearing of the shock absorber 253.

[0292] The compression section 130 and the drive motor 110 can form the compressor body.

[0293] In the event of excessive movement of the compressor body, the damper 253 first contacts the inner side of the housing 100, thereby limiting the movement of the compressor body.

[0294] The housing 100 is separated from the compressor body by a predetermined distance, and the vibration damper 253 restricts the movement of the compressor body, thereby protecting the compressor body from damage caused by impact.

[0295] Figure 9 It is shown in Figure 6 The concept diagram of the anti-detachment protrusion 155 is omitted from the bottom surface of the shock absorber 353.

[0296] This embodiment is the same as the above. Figures 1 to 8 The difference in the embodiment is that the anti-detachment protrusion 155 protruding from the bottom surface of the shock absorber 353 is removed.

[0297] In this embodiment, the state of the first tapered portion 1551 of the anti-detachment protrusion 155 of the damper 353 and the second tapered portion 157 of the receiving portion 254 of the damper 353 is omitted.

[0298] Other constituent elements and Figures 1 to 8 The embodiments are the same or similar, so repeated descriptions are omitted.

[0299] Figure 10This is a conceptual diagram showing the state in which the damper 453 is fastened to the cylinder block 131 by adding an additional fastening member 450, rather than the damper 453 being directly assembled to the stator 111 by the fastening member 450.

[0300] In this embodiment, the damper 453 is not directly assembled to the first fastening member 451 of the stator 111 and the cylinder block 131, but an additional second fastening member 452 can be added, and the damper 453 is integrated with the second fastening member 452 and fastened to the cylinder block 131.

[0301] The fastening member 450 may include a first fastening member 451 and a second fastening member 452. The first fastening member 451 and the second fastening member 452 may each be made of ferrous material.

[0302] The first fastening member 451 can be implemented as a bolt. The length of the first fastening member 451 can be greater than the axial length of the stator core 112 (or the stacking length of the stator core 112). The length of the first fastening member 451 can be less than the sum of the axial lengths of the stator joint 133 of the stator core 112 and the cylinder block 131.

[0303] A portion of the first fastening member 451 can pass through the first through hole 113 of the stator core 112, and another portion of the first fastening member 451 can be accommodated in the second through hole 134 of the stator joint 133. Thus, the first fastening member 451 can fasten the stator 111 and the cylinder block 131.

[0304] The second fastening member 452 can be implemented in the form of a pin or a cylindrical rod. The second fastening member 452 may not have a threaded portion. The length of the second fastening member 452 may be less than the axial length of the stator joint 133 of the cylinder block 131.

[0305] The damper 453 can be integrally formed with the second fastening member 452. For example, the damper 453 and the second fastening member 452 can be made of different materials.

[0306] A portion of the second fastening member 452 can be inserted into and engaged with the receiving portion 254 of the damper 453. Another portion of the second fastening member 452 can protrude from the receiving portion 254 of the damper 453.

[0307] The second fastening member 452, which is integrated with the shock absorber 453, can be pressed into the second through hole 134 of the stator joint 133 of the cylinder block 131.

[0308] Because other constituent elements are related to the above Figures 1 to 9 The embodiments are the same or similar, so repeated descriptions are omitted.

[0309] Figure 11 It is shown in Figure 6 A conceptual diagram showing that the receiving portion 554 of the shock absorber 553 is provided with a connecting protrusion 5531 and the insertion portion 551 of the fastening member 550 is provided with a connecting groove 5511.

[0310] In this embodiment, a radially recessed engagement groove 5511 may be formed on the outer peripheral surface of the insertion portion 551 of the fastening member 550, and an engagement protrusion 5531 that protrudes radially toward the engagement groove 5511 may be formed on the inner peripheral surface of the receiving portion 554 of the damper 553.

[0311] The engaging protrusion 5531 of the damper 553 and the engaging groove 5511 of the fastening member 550 can be formed in corresponding shapes. For example, the engaging protrusion 5531 of the damper 553 and the engaging groove 5511 of the fastening member 550 can be formed in a semi-circular shape. However, the shapes of the engaging protrusion 5531 and the engaging groove 5511 are not limited to a semi-circular shape, and can be formed in various shapes such as polygons.

[0312] Therefore, the engagement protrusion 5531 of the damper 553 can engage with the engagement groove 5511 of the fastening member 550 to prevent the damper 553 from falling off the insertion part 551 of the fastening member 550.

[0313] Because other constituent elements are related to the above Figures 1 to 10 The embodiments are the same or similar, so repeated descriptions are omitted.

[0314] Figure 12 It is shown in Figure 6 A conceptual diagram showing the state in which the receiving portion 654 of the shock absorber 653 is provided with a connecting groove 6531 and the insertion portion 651 of the fastening member 650 is provided with a connecting protrusion 6511.

[0315] In this embodiment, a radially recessed connecting groove 6531 may be formed on the inner peripheral surface of the receiving portion 654 of the damper 653, and a connecting protrusion 6511 that protrudes radially toward the connecting groove 6531 may be formed on the outer peripheral surface of the insertion portion 651 of the fastening member 650.

[0316] The engaging protrusion 6511 of the fastening member 650 and the engaging groove 6531 of the damper 653 can be formed in corresponding shapes. For example, the engaging protrusion 6511 of the fastening member 650 and the engaging groove 6531 of the damper 653 can be formed in a semi-circular shape. However, the shapes of the engaging protrusion 6511 and the engaging groove 6531 are not limited to semi-circular shapes, and can be formed in various shapes such as polygons.

[0317] Thus, the engagement protrusion 6511 of the fastening member 650 can engage with the engagement groove 6531 of the damper 653 to prevent the damper 653 from falling out of the insertion portion 651 of the fastening member 650.

[0318] Because other constituent elements are related to the above Figures 1 to 11 The embodiments are the same or similar, so repeated descriptions are omitted.

Claims

1. A compressor characterized by, include: case; The electric motor is located inside the housing and has a crankshaft, a rotor connected to the crankshaft, and a stator surrounding the rotor. The compression section includes a cylinder block disposed inside the housing, a piston configured to reciprocate inside the cylinder block, and a connecting rod connecting the crankshaft and the piston; Fastening members, penetrating the stator and the cylinder block for connection; and A shock absorber is installed at one end of the fastening member that protrudes from the cylinder block.

2. The compressor according to claim 1, characterized in that, The fastening component is made of an iron-based material; The shock absorber is made of rubber.

3. The compressor according to claim 1, characterized in that, The fastening components are secured with bolts.

4. The compressor according to claim 1, characterized in that, The vibration damper is configured to be spaced apart from the inner side of the housing by a predetermined interval in at least one of the vertical, front-back, and left-right directions.

5. The compressor according to claim 1, characterized in that, The shock absorber is a rear shock absorber disposed on the rear side of the cylinder block in a direction away from the piston that moves to compress the refrigerant drawn into the compression chamber of the cylinder block.

6. The compressor according to claim 1, characterized in that, The housing includes: First shell; and The second housing is combined to cover the upper part of the first housing; The fastening member protrudes upward from one side of the cylinder block, and the height of the shock absorber protruding from one side of the cylinder block is greater than or equal to the distance between the top surface of the shock absorber and the inner side of the housing.

7. The compressor according to claim 1, characterized in that, An insertion part is provided at one end of the fastening member that protrudes from the cylinder block; An accommodating portion is formed inside the shock absorber for the insertion portion to be pressed into and engaged.

8. The compressor according to claim 7, characterized in that, The fastening member further includes an inclined chamfer at the end of the insertion portion; The damper also includes a buffer space that surrounds the fastening member, spaced apart from the chamfer.

9. The compressor according to claim 8, characterized in that, The buffer space also includes an inclined portion that is in close contact with at least one side of the chamfer.

10. The compressor according to claim 7, characterized in that, A stress dispersion hole is formed in the upper part of the shock absorber, extending towards the receiving part.

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