compressor

Abstract

The present application relates to a kind of compressors.The compressor includes: housing;Electric part, set to the inside of the housing, with crankshaft, rotor combined with the crankshaft and the stator surrounding the rotor;Compression part, including the cylinder block set to the inside of the housing, the piston configured to be able to reciprocatingly move inside the cylinder block and the connecting rod connected with the crankshaft and the piston;Cylinder cover, combined with one side of the cylinder block;And damper, installed on the side of the cylinder cover.The damper can be directly assembled to the separable cylinder cover, and only the part where the damping function is needed to form damper.Thereby, the cost of damper can be reduced, and assembly and production efficiency are improved.

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 cylinder block disposed inside the housing, a protrusion protruding from the upper side of the cylinder 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 cylinder block when the compressor is driven.

[0011] A cylinder cover is attached to one side of the cylinder block. The protrusion and the damper surrounding the protrusion are disposed on the upper side of the cylinder block, which functions as a cylinder housing, rather than on a separable cylinder cover.

[0012] However, the shock absorber in Patent Document 1 not only uses high-cost rubber, but also requires additional assembly structures to fix it to a body made of different materials (e.g., iron-based materials).

[0013] In addition, the vibration damper is shaped to cover the upper part of the complex cylinder block, thus increasing the amount of materials needed, raising costs, and reducing assemblability.

[0014] Existing patent document EP3283767B1 (published on September 26, 2020; hereinafter referred to as patent document 2) discloses a refrigerant compressor.

[0015] 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.

[0016] The internal element is connected to the drive device. The internal element is configured to support the vibration damping device.

[0017] 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.

[0018] However, the internal elements are joined through the cylinder block but not through the stator.

[0019] 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.

[0020] 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

[0021] 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.

[0022] The primary objective is to provide a reciprocating compressor with a structure that allows the vibration damper to be installed only at specific locations requiring vibration damping without the need for additional connecting structures.

[0023] The second objective is to provide a reciprocating compressor with a structure that minimizes material consumption and reduces costs.

[0024] The third objective is to provide a reciprocating compressor with a structure that allows for easy assembly of a single component with a separable cylinder head.

[0025] The fourth objective is to provide a reciprocating compressor with a structure that prevents the damper from detaching or tearing due to external impacts during operation.

[0026] The fifth objective is to provide a reciprocating compressor with a simple vibration damper.

[0027] 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.

[0028] 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 cylinder cover coupled to one side of the cylinder block; and a vibration damper mounted on the side of the cylinder cover.

[0029] Therefore, the vibration damper is installed on the part that needs vibration damping, such as the cylinder head, thus reducing the amount of material and cost of vibration dampers made of expensive rubber.

[0030] According to one example, the vibration damper may be provided in a plurality of manner; the plurality of vibration dampers may further include: a first vibration damper attached to one side of the cylinder head; and a second vibration damper attached to the other side of the cylinder head in the opposite direction to the first vibration damper.

[0031] Therefore, the shock absorber can minimize the impact transmitted from both sides of the cylinder head to the housing.

[0032] In one example, the shock absorber is mounted on a mounting portion that protrudes from the side of the cylinder head. The shock absorber includes a receiving portion that surrounds and accommodates the mounting portion.

[0033] Thus, the shock absorber can be combined with and supported by the housing portion and the mounting portion of the cylinder head.

[0034] According to one example, the mounting portion may include: an extension that protrudes in one direction from the side of the cylinder head; and a protrusion that protrudes from the extension in another direction intersecting the first direction.

[0035] Thus, the extension and the protrusion can stably support the vibration damper with a simple structure.

[0036] According to one example, the receiving portion may include: a first receiving portion that receives the protrusion and is formed in a straight line shape; and a second receiving portion that receives the extension that extends from the first receiving portion along the direction.

[0037] Thus, the first and second receiving portions can stably support the protrusions and extensions of the shock absorber with a simple structure.

[0038] According to one example, the shock absorber may have a curved surface portion provided at the outer corner of the receiving portion that accommodates the protrusion. The curved surface portion may be spaced apart from the inner surface of the housing by a predetermined interval and is formed corresponding to the curved surface shape of the inner surface of the housing.

[0039] Thus, the curved surface is formed to have the same or similar curvature as the inner surface of the housing, thereby protecting the compressor body from external impacts.

[0040] According to one example, the damper may include: a top portion of the damper, forming the top surface of the damper to cover the upper part of the protrusion and the extension; a front portion of the damper, arranged in the opposite direction to the piston, forming the front of the damper; a back portion of the damper, arranged towards the piston, forming the back of the damper; and a side portion of the damper, connecting the front portion of the damper and the back portion of the damper.

[0041] The curved surface may include: a first curved surface formed at the corner where the top surface of the shock absorber connects to the side surface of the shock absorber; and a second curved surface formed at the corner where the front surface of the shock absorber connects to the side surface of the shock absorber.

[0042] Therefore, the first curved surface is formed with the same or similar curvature as the surface at the corner where the top and side surfaces intersect on the inner side of the upper housing, thus protecting the compressor body from external impacts.

[0043] In addition, the second curved surface is formed with the same or similar curvature as the curved surface that intersects the front and side portions in the inner side of the upper housing, thus protecting the compressor body from external impacts.

[0044] According to one example, the protrusion is provided in a plurality of portions, the plurality of protrusions including: a first protrusion protruding from one side of the extension in a direction intersecting the first direction; and a second protrusion protruding from one side of the extension in a direction opposite to the first protrusion in another direction intersecting the first direction.

[0045] Therefore, the first protrusion and the second protrusion can prevent the shock absorber from falling off the mounting part of the cylinder head.

[0046] According to one example, the receiving portion may include a plurality of locking protrusions, the plurality of locking protrusions being formed to protrude toward one side of the extension and engage with the protrusion.

[0047] The plurality of the locking protrusions may include: a first locking protrusion configured to overlap with the first protrusion along the one direction; and a second locking protrusion configured to overlap with the second protrusion along the one direction.

[0048] Thus, the plurality of the locking protrusions engage with the protrusion to strengthen the connection between the shock absorber and the mounting portion.

[0049] According to one example, the damper includes: a damper back portion disposed toward the piston and surrounding the back of the protrusion; and a damper front portion disposed in the opposite direction to the piston and surrounding the front of the protrusion.

[0050] Therefore, the front and back portions of the shock absorber are arranged in the front-rear direction with the protrusion between them, thus restricting the movement of the shock absorber relative to the protrusion in the front-rear direction.

[0051] In one example, the extension and the protrusion may form a right angle with each other.

[0052] Therefore, the extension and the protrusion are configured to intersect each other, thus maintaining structural stability.

[0053] 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.

[0054] Therefore, the outer side of the shock absorber and the inner side of the housing can be configured with a predetermined interval, thus reducing the impact when colliding with the housing.

[0055] According to one example, the damper may be a front damper disposed on the front side of the cylinder block in a direction close to the piston moving toward the piston to compress the refrigerant drawn into the compression chamber of the cylinder block.

[0056] Therefore, the front shock absorber can reduce external impact when the front side of the cylinder block collides with the housing.

[0057] According to one example, the cylinder head can be formed as a quadrilateral, and the corners of the cylinder head can be fastened to the cylinder block by a plurality of fastening members.

[0058] The shock absorber can be installed to cover the upper corner of the cylinder head.

[0059] Therefore, the shock absorber can reduce the impact when the upper side of the cylinder head collides with the inner side of the housing.

[0060] According to embodiments of the present invention, the following effects can be achieved.

[0061] First, multiple shock absorbers can be mounted on the upper part of both sides of the cylinder head. A mounting portion can be provided on the upper part of the side of the cylinder head. The mounting portion can be configured to protrude laterally from the upper part of the side of the cylinder head.

[0062] The mounting section is integrally formed with the cylinder head. Therefore, without the need for additional connecting structures, the shock absorber can be directly assembled to the cylinder head by mounting it on the mounting section, thus reducing the number of parts.

[0063] Secondly, the vibration damper is installed only at the parts that require vibration damping, thereby reducing material costs and expenses.

[0064] Third, the cylinder head can be fastened to the cylinder block using bolts or other fastening components. The cylinder head can be separated from the cylinder block. The cylinder head can be manufactured as a separate component relative to the cylinder block. The cylinder head forms the ejection chamber and is rectangular, thus simplifying the structure.

[0065] The mounting portion may include an extension and a protrusion. The extension is formed to protrude laterally from the side of the cylinder head. The protrusion may include a first protrusion and a second protrusion.

[0066] The first protrusion can be formed to protrude upward from the top surface of the extension. The second protrusion can be formed to protrude downward from the bottom surface of the extension.

[0067] The shock absorber includes a receiving portion. The receiving portion is formed to receive and surround the mounting portion. The receiving portion can be press-fitted into the mounting portion.

[0068] Therefore, the shock absorber can be easily assembled onto the side of the cylinder head via the mounting part.

[0069] Fourth, the receiving part may have a first receiving part and a second receiving part.

[0070] The first receiving portion is configured to surround and receive one side of the protrusion and the extension. The second receiving portion is configured to surround and receive a part of the extension, as an example, the top surface and the bottom surface.

[0071] The shock absorber includes a locking protrusion. The locking protrusion may have a first locking protrusion and a second locking protrusion. The first locking protrusion may be formed to protrude from the inner side of the receiving portion toward the top surface of the extension portion.

[0072] The second locking protrusion can be formed to protrude from the inner side of the receiving portion toward the bottom surface of the extension portion. The first locking protrusion can engage with the first protrusion. The second locking protrusion can engage with the second protrusion.

[0073] Therefore, the locking protrusion can restrict the vibration damper from moving from the mounting part in the left and right directions.

[0074] The vibration damper may also include a front portion and a back portion. The front portion forms the front of the vibration damper. The front portion surrounds the front of the protrusion and extension. The back portion forms the back of the vibration damper. The back portion surrounds the back of the vibration damper.

[0075] Therefore, the front and back sides of the shock absorber can restrict the shock absorber from moving in the front-to-back direction from the mounting part.

[0076] The vibration damper may also include a top surface and a bottom surface. The top surface forms the top surface of the vibration damper. The bottom surface forms the bottom surface of the vibration damper. The top and bottom surfaces of the vibration damper can prevent the vibration damper from detaching from the mounting portion in the vertical direction by surrounding the mounting portion.

[0077] Fifth, the receiving portion of the shock absorber includes a straight section. The straight section is configured to face the side of the protruding portion. The straight section may be formed as a plane. The side surfaces of the straight section and the protruding portion may be in surface contact with each other.

[0078] Therefore, by having the straight portion and the protruding portion of the shock absorber in surface contact with each other, the receiving portion and the protruding portion of the mounting portion of the shock absorber can be tightly fitted together. This maximizes the bonding force between the shock absorber and the mounting portion.

[0079] The shock absorber has a simple structure and can be compactly configured on the upper part of the cylinder block. Attached Figure Description

[0080] Figure 1 This is a perspective view of a compressor according to an embodiment of the present invention.

[0081] Figure 2 along Figure 1 A sectional view along line II-II.

[0082] Figure 3 Viewed from the front side Figure 1 A conceptual diagram showing the shock absorber mounted on the side of the cylinder head.

[0083] Figure 4 Viewed from the rear side Figure 3 A conceptual diagram showing the shock absorber mounted on the side of the cylinder head.

[0084] Figure 5 yes Figure 3 Exploded view of the shock absorber and cylinder head.

[0085] Figure 6 (a) through (c) show the views from the front, top, and right sides. Figure 5 A conceptual diagram of the cylinder head's state.

[0086] Figure 7 It is along Figure 3 The sectional view along line VII-VII is a conceptual diagram showing the state of the shock absorber mounted on both sides of the cylinder head as viewed from above.

[0087] Figure 8 It is along Figure 3 The cross-sectional view along line VIII-VIII is a conceptual diagram showing the state of the shock absorber mounted on both sides of the cylinder head as viewed from the front.

[0088] Explanation of reference numerals in the attached figures

[0089] 100: Shell 101: Upper Shell

[0090] 102: Lower housing 103: Spring

[0091] 104: First support section 105: Second support section

[0092] 110: Drive motor 111: Stator

[0093] 112: Stator core; 114: Stator coil

[0094] 115: Rotor; 116: Rotor core

[0095] 117: Rotor rod; 118a: First end ring

[0096] 118b: Second end ring; 119: Crankshaft

[0097] 120: Oil flow path 121: Oil flow path groove

[0098] 122: Oil pump; 123: Eccentric shaft

[0099] 124: Counterweight; 125: Connecting rod

[0100] 126: Eccentric shaft joint 127: Piston joint

[0101] 128: Connecting pin; 130: Compression section

[0102] 131: Cylinder block; 132: Frame

[0103] 133: Stator joint; 135: Shaft support section

[0104] 136: Cylinder barrel; 137: Compression chamber

[0105] 138: Piston; 140: Valve assembly

[0106] 141: Valve plate; 142: Suction valve

[0107] 143: Discharge valve; 145: Intake silencer

[0108] 146: Inhalation tube 147: Exhalation silencer

[0109] 148: Discharge pipe 149: Return pipe

[0110] 150: Cylinder head 151: Ejection chamber

[0111] 152: Fastening hole; 153: Fastening component

[0112] 154: Recessed portion 155: Mounting portion

[0113] 155a: First mounting section; 155b: Second mounting section

[0114] 156: Extension 1561: Neck

[0115] 157: Protrusion 157a: First protrusion

[0116] 157b: Second protrusion; 160: Vibration damper

[0117] 161: Front shock absorber; 161a: First shock absorber

[0118] 161b: Second shock absorber; 1611: Front view of the shock absorber

[0119] 1612: Back of the shock absorber 1613: Side of the shock absorber

[0120] 1614: Top surface of the shock absorber; 1615: Bottom surface of the shock absorber

[0121] 162: Rear shock absorber 163: Receiving part

[0122] 163a: First receiving section; 163b: Second receiving section

[0123] 164: Curved face 164a: First curved face

[0124] 164b: Second curve of the face; 165: Positioning protrusion.

[0125] 165a: First card slot protrusion; 165b: Second card slot protrusion.

[0126] 166: Cover section 167: Rounded section

[0127] 168: Anti-interference unit 168a: First anti-interference unit

[0128] 168b: Second Anti-interference Unit Detailed Implementation

[0129] 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.

[0130] In the following description, descriptions of certain components may be omitted to make the features of the invention clear.

[0131] 1. Definition of terms

[0132] 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.

[0133] 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.

[0134] Unless the context clearly indicates a different meaning, the singular expressions used in this specification include the plural expressions.

[0135] In the following description, “radial” or “radial shape” refers to a shape that extends outward from the center point like spokes of a wheel.

[0136] In the following description, "axial" refers to the length direction of the crankshaft.

[0137] In the following description, "axial" can refer to the vertical direction.

[0138] 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.

[0139] In the following description, "circumferential direction" refers to the circumference of the circle.

[0140] 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.

[0141] The journals used in the following description are shaft parts supported by bearings, etc.

[0142] The terms “front side,” “rear side,” “left side,” “right side,” “upper side,” and “lower side” used in the following description can be found in [reference needed]. Figure 1 Understanding the coordinate system shown.

[0143] 2. Description of the configuration of a compressor according to an embodiment of the present invention

[0144] In this embodiment, the compressor can be a hermetic compressor.

[0145] In this embodiment, the compressor can be a reciprocating compressor. However, it is not limited to this.

[0146] Figure 1 This is a perspective view of a compressor according to an embodiment of the present invention.

[0147] Figure 2 along Figure 1 A sectional view along line II-II.

[0148] Figure 3 Viewed from the front side Figure 1 A conceptual diagram showing the shock absorber mounted on the side of the cylinder head.

[0149] Figure 4 Viewed from the rear side Figure 3 A conceptual diagram showing the shock absorber mounted on the side of the cylinder head.

[0150] Figure 5 yes Figure 3 Exploded view of the shock absorber and cylinder head.

[0151] Figure 6 (a) through (c) show the views from the front, top, and right sides. Figure 5 A conceptual diagram of the cylinder head's state.

[0152] Figure 7 It is along Figure 3 The sectional view along line VII-VII is a conceptual diagram showing the state of the shock absorber mounted on both sides of the cylinder head as viewed from above.

[0153] Figure 8 It is along Figure 3 The cross-sectional view along line VIII-VIII is a conceptual diagram showing the state of the shock absorber mounted on both sides of the cylinder head as viewed from the front.

[0154] 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.

[0155] 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.

[0156] The housing 100 can accommodate the compression unit 130 and the drive motor 110.

[0157] The housing 100 may include a lower housing 102 and an upper housing 101.

[0158] 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.

[0159] 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.

[0160] Thus, the upper shell 101 and the lower shell 102 can seal the accommodating space of the shell 100.

[0161] The drive motor 110 may include a stator 111 and a rotor 115.

[0162] 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.

[0163] 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.

[0164] 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.

[0165] 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 described later. A receiving groove for accommodating the head of the fastening member can also be provided inside the second support portion 105.

[0166] 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.

[0167] 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.

[0168] The rotor 115 can be rotatably disposed inside the stator 111.

[0169] The stator 111 may include a stator core 112 and a stator coil 114.

[0170] 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.

[0171] 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.

[0172] 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.

[0173] 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.

[0174] The stator coil 114 can be wound around the stator core 112 through the slot.

[0175] The stator core 112 can be fixed to the bottom surface of the cylinder block 131 by fastening components. The fastening components can be bolts or screws.

[0176] The fastening component can penetrate the stator core 112 and the cylinder block 131 described later to be joined together.

[0177] A first through hole can be formed inside the stator core 112. A second through hole can be formed inside the cylinder block 131. Fastening components can pass through the first and second through holes.

[0178] A plurality of fastening components may be provided to fasten the stator core 112 and the cylinder block 131. For example, two fastening components may be provided in front of the stator core 112 and two in rear of the cylinder block 131, for a total of four fastening components. The plurality of fastening components may be arranged spaced apart in the front-back direction and the left-right direction.

[0179] 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.

[0180] 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.

[0181] 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.

[0182] 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.

[0183] The crankshaft 119 can be coupled to the rotor core 116 through the first shaft hole.

[0184] 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.

[0185] 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.

[0186] 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.

[0187] 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.

[0188] 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.

[0189] 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.

[0190] 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.

[0191] 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.

[0192] 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.

[0193] 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.

[0194] The compression section 130 may include a cylinder block 131 and a piston 138.

[0195] 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.

[0196] The cylinder block 131 may include a frame 132, a stator joint 133, a shaft support 135, and a cylinder 136.

[0197] 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.

[0198] 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. The cylinder block 131 can be fastened to the stator 111 by a fastening member that penetrates the stator joint 133.

[0199] Thus, the cylinder block 131 can be elastically supported together with the stator 111 in the lower housing 102.

[0200] 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.

[0201] 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.

[0202] 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.

[0203] 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.

[0204] 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.

[0205] 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.

[0206] 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.

[0207] 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.

[0208] 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.

[0209] 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.

[0210] 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.

[0211] Therefore, the rotor core 116 can rotate relative to the shaft support 135.

[0212] 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.

[0213] 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.

[0214] 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.

[0215] 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.

[0216] 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.

[0217] 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.

[0218] The valve assembly 140 may include a valve plate 141, an intake valve 142, an exhaust valve 143, and a cylinder cover 144.

[0219] 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.

[0220] 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.

[0221] 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).

[0222] 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).

[0223] 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.

[0224] The cylinder head 144 can be fastened to the outer opening end of the cylinder block 131 to cover the compression chamber 137. An ejection chamber can be formed by a recess on the inner side of the cylinder head 144.

[0225] 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.

[0226] 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.

[0227] 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. A plurality of discharge mufflers can be provided on the upper part of the cylinder block. The discharge mufflers can be arranged spaced apart in the left-right direction on the front side of the cylinder block.

[0228] The following describes the operation of the compressor.

[0229] 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.

[0230] 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.

[0231] 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.

[0232] 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 cylinder head 144.

[0233] 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.

[0234] 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.

[0235] For example, although the fastening members of the cylinder block 131 of the compression section 130 and 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.

[0236] The present invention provides a vibration damper 160 structure capable of minimizing the transmission of vibrations from cylinder block 131 and stator 111 to housing 100.

[0237] For example, two dampers 160 may be provided on the front side and the rear side of the cylinder block 131. The damper 161 provided on the front side of the cylinder block 131 may be named the front damper 161. The damper 162 provided on the rear side of the cylinder block 131 may be named the rear damper 162.

[0238] The front side of cylinder block 131 can refer to the front side of cylinder block 131 with reference to the direction of piston movement, in which the refrigerant drawn into the compression chamber from the upper side of cylinder block 131 is compressed. The rear side of cylinder block 131 can refer to the rear side of cylinder block 131 with reference to the direction of piston movement, in which the refrigerant drawn into the compression chamber from the upper side of cylinder block 131 expands.

[0239] A plurality of rear shock absorbers 162 can be press-fitted with fastening members that penetrate the stator and cylinder block 131. A plurality of fastening members may be arranged on the edges of the stator 111 and cylinder block 131.

[0240] A plurality of front shock absorbers 161 may be coupled to the two sides of the cylinder head 150. In the following description, shock absorber 161 refers to front shock absorber 161.

[0241] The cylinder cover 150 may include a front, back, left side, right side, top, and bottom surface.

[0242] The front of the cylinder head 150 can be configured to face the front side of the inner side of the housing 100 at a predetermined interval. Here, the front side of the inner side of the housing 100 can refer to the side that is close to the piston that moves to compress the refrigerant in the compression chamber.

[0243] The front side of the cylinder head 150 may be formed in a shape corresponding to the front side of the housing 100. The front side of the cylinder head 150 may include a curved surface formed with a gentle curvature.

[0244] The back side of the cylinder head 150 can be configured to face the valve plate 141 of the valve assembly 140. The back side can be flat. A recessed discharge chamber 151 can be formed on the inner side of the back side of the cylinder head 150.

[0245] A left side, a right side, a top side, and a bottom side are formed between the front and back sides of the cylinder head 150. The left side of the cylinder head 150 is the side of the cylinder head 150 facing to the left.

[0246] The right side of the cylinder head 150 is the side of the cylinder head 150 facing to the right. The top surface of the cylinder head 150 is the side of the cylinder head 150 facing upwards. The bottom surface of the cylinder head 150 is the side of the cylinder head 150 facing downwards.

[0247] The cylinder head 150 can be formed in a quadrilateral shape. Fastening holes 152 extending in the front-to-back direction can be formed at the four corners of the cylinder head 150. Fastening components 153 such as bolts can be fastened to the cylinder 136 of the cylinder block 131 through the fastening holes 152.

[0248] Recesses 154, which are recessed from the front to the back of the cylinder 136 and surround the fastening hole 152, can be formed at the four corners of the cylinder cover 150.

[0249] The cylinder head 150 may also include a mounting portion 155. The mounting portion 155 may be formed to protrude from one side of the cylinder head 150. The shock absorber 161 may be mounted on the mounting portion 155. The mounting portion 155 may include a first mounting portion 155a and a second mounting portion 155b.

[0250] The first mounting portion 155a can be formed to protrude from one side of the cylinder head 150, for example, the left side. The first damper 161a can be mounted on the first mounting portion 155a. The second mounting portion 155b can be formed to protrude from the other side of the cylinder head 150, for example, the right side. The second damper 161b can be mounted on the second mounting portion 155b.

[0251] The mounting portion 155 may have an extension 156 and a protrusion 157. The extension 156 may be formed to protrude in one direction from the side of the cylinder head 150. Here, as an example, one direction may refer to the left or right direction. A neck 1561 may be formed at the position where the extension 156 begins to protrude.

[0252] The extension 156 can be disposed on the upper side of the cylinder head 150 with reference to the center of the cylinder head 150 in the vertical direction.

[0253] The extension 156 may be formed in the form of a rectangle. The corners of the extension 156 may be rounded. The size (area) of the extension 156 is larger than the size (area) of the neck 1561. Here, area may refer to the size of the surface perpendicular to the protruding direction of the extension 156.

[0254] The extension 156 may be formed to protrude rearward from the back of the neck 1561. The extension 156 may be formed to protrude rearward from the back of the cylinder head 150.

[0255] A front-to-back width is formed between the front and back sides of the extension 156. A front-to-back width (thickness) of the neck 1561 is formed between the front and back sides of the neck 1561. The front-to-back width of the extension 156 may be greater than the front-to-back width of the neck 1561.

[0256] A vertical length is formed between the top and bottom surfaces of the extension 156. A vertical length is formed between the top and bottom surfaces of the neck 1561. The vertical length of the extension 156 may be the same as the vertical length of the neck 1561.

[0257] The neck 1561 can connect the side of the cylinder head 150 and the extension 156. Thus, the neck 1561 can improve the support of the cylinder head 150 for the extension 156.

[0258] The vertical length of the extension 156 can be greater than the front-to-back width of the extension 156.

[0259] The protrusion 157 can be formed to protrude from one side of the extension 156. A plurality of protrusions 157 can be provided. The protrusion 157 can be formed in a rectangular shape.

[0260] The plurality of protrusions 157 may be composed of a first protrusion 157a and a second protrusion 157b.

[0261] The first protrusion 157a can be formed to protrude upwards from the top surface of the extension 156 in one direction, for example. The front-to-back width of the first protrusion 157a can be the same as the front-to-back width of the extension 156.

[0262] The second protrusion 157b can be formed to protrude downwards from the bottom surface of the extension 156 in another direction, for example. The front-to-back width of the second protrusion 157b can be the same as the front-to-back width of the extension 156. The first protrusion 157a and the second protrusion 157b can protrude in opposite directions to each other.

[0263] The protrusion 157 can form a right angle with the extension 156.

[0264] The above description of the extension 156 and the protrusion 157 can be applied to the first mounting portion 155a and the second mounting portion 155b, respectively. However, the left-right length of the first extension 156a of the first mounting portion 155a may be different from the left-right length of the second extension 156b of the second mounting portion 155b.

[0265] In this embodiment, it is shown that the left-right length of the first extension 156a of the first mounting portion 155a is shorter than the left-right length of the second extension 156b of the second mounting portion 155b.

[0266] Furthermore, the lateral length of the protrusion 157 of the first mounting portion 155a may differ from the lateral length of the protrusion 157 of the second mounting portion 155b. In this embodiment, a state is shown where the lateral length of the protrusion 157 of the first mounting portion 155a is shorter than the lateral length of the protrusion 157 of the second mounting portion 155b.

[0267] The shock absorber 161 can be formed of an elastic material such as rubber. Thus, the shock absorber 161 can absorb or reduce external impacts.

[0268] The shock absorber 161 includes a receiving portion 163. The receiving portion 163 is configured to receive a mounting portion 155. The receiving portion 163 is configured to surround the mounting portion 155. The receiving portion 163 can be press-fitted into the mounting portion 155.

[0269] Reception section 163 (refer to) Figure 8 The extension 156 may include a first receiving portion 163a and a second receiving portion 163b. The first receiving portion 163a is configured to receive the protrusion 157. The first receiving portion 163a is formed to surround the protrusion 157. The first receiving portion 163a may be configured to surround one side of the extension 156.

[0270] The second receiving portion 163b can extend in one direction from the first receiving portion 163a. ​​The second receiving portion 163b is configured to receive part of the extension 156. The second receiving portion 163b is formed to surround part of the extension 156, serving as the top and bottom surfaces of an example extension 156.

[0271] The vibration damper 161 may include a front portion 1611 and a back portion 1612. The front portion 1611 forms the front side of the vibration damper 161. The front portion 1611 is formed to cover the front side of the protrusion 157. The front portion 1611 may also be configured to cover a portion of the front side of the extension 156.

[0272] The back side portion 1612 of the shock absorber forms the back side of the shock absorber 161. The back side portion 1612 of the shock absorber is formed to cover the back side of the protrusion 157. The back side portion 1612 of the shock absorber may also be configured to cover a portion of the back side of the extension 156.

[0273] Therefore, the front part 1611 and the back part 1612 of the shock absorber can prevent the shock absorber 161 from detaching from the mounting part 155 in the front-rear direction.

[0274] The damper 161 may also include a damper side portion 1613. The damper side portion 1613 is formed to cover the side of the protrusion 157 of the damper 161. The damper side portion 1613 may extend to cover the side of the extension 156.

[0275] Therefore, the side portion 1613 of the shock absorber can prevent the shock absorber 161 from detaching from the mounting portion 155 in the left-right direction.

[0276] The damper 161 may also include a top portion 1614. The top portion 1614 is formed to cover the top surface of the protrusion 157 of the damper 161. The top portion 1614 may extend to cover a portion of the top surface of the extension 156.

[0277] Therefore, the top part 1614 of the shock absorber can prevent the shock absorber 161 from detaching downward from the mounting part 155.

[0278] The damper 161 may also include a bottom portion 1615. The bottom portion 1615 is formed to cover the bottom surface of the protrusion 157 of the damper 161. The bottom portion 1615 may extend to cover a portion of the bottom surface of the extension 156.

[0279] Therefore, the bottom part 1615 of the shock absorber can prevent the shock absorber 161 from detaching upward from the mounting part 155.

[0280] The damper 161 may also include a curved surface 164. The curved surface 164 may have a first curved surface 164a and a second curved surface 164b. The first curved surface 164a may be formed into an arc shape with a predetermined curvature at the corner where the top surface 1614 of the damper connects to the side surface 1613 of the damper.

[0281] The second curved surface 164b can be formed into an arc shape with a predetermined curvature at the corner where the front part 1611 of the shock absorber and the side part 1613 of the shock absorber connect. The first curved surface 164a can be configured to face the front part of the inner side of the upper housing 101 at a predetermined interval.

[0282] The first curved surface 164a can be configured to face the top surface in the inner side of the upper housing 101 at a predetermined interval.

[0283] The second curved face 164b can be configured to face the side portion of the inner side of the upper housing 101 at a predetermined interval.

[0284] The curved surface 164 can be formed with the same or similar curvature as the inner surface facing the housing 100. Thus, the curved surface 164 can minimize impact when colliding with the inner surface of the housing 100.

[0285] The shock absorber 161 may also include a locking protrusion 165. The locking protrusion 165 is formed to protrude vertically from the inner side of the receiving portion 163 toward the extension portion 156. The locking protrusion 165 may be composed of a first locking protrusion 165a and a second locking protrusion 165b.

[0286] The first locking protrusion 165a can be formed to protrude from the upper side of the receiving portion 163 toward the top surface of the extension portion 156. The second locking protrusion 165b can be formed to protrude from the lower side of the receiving portion 163 toward the bottom surface of the extension portion 156.

[0287] The locking protrusion 165 can contact one side of the extension 156. As an example, the first locking protrusion 165a can protrude downward to contact the top surface of the extension 156. The second locking protrusion 165b can protrude upward to contact the bottom surface of the extension 156.

[0288] The locking protrusion 165 and the protrusion 157 can be configured to overlap each other in one direction, for example, in the extending direction of the extension 156. The locking protrusion 165 and the protrusion 157 can be joined to contact and engage each other along said one direction.

[0289] Therefore, the locking protrusion 165 can prevent the shock absorber 161 from detaching from the mounting part 155 in the left and right directions.

[0290] The shock absorber 161 may also include a cover 166. The cover 166 may extend in the left-right direction along a vertical centerline passing through the center of the cylinder cover 150 on the top surface 1614 of the shock absorber. The top surface (outer side), front surface, and back surface of the cover 166 may be planar.

[0291] An arcuate portion 167 can be formed on the bottom surface (inner surface) of the cover portion 166. The arcuate portion 167 is formed to surround the cylinder head 150. Thus, the cover portion can cover part of the top surface and side surface of the cylinder head 150.

[0292] On two adjacent sides of the cylinder head 150, for example, the top and side surfaces or the bottom and side surfaces may have arc-shaped corners. The arc-shaped corners may be formed in a circular arc shape. The cover 166 of the shock absorber 161 is formed to cover the arc-shaped corners of the cylinder head 150.

[0293] The shock absorber 161 may also include an anti-interference section 168. The anti-interference section 168 is configured to prevent interference between the shock absorber 161 and its surrounding components, such as the cylinder block 131. The anti-interference section 168 may be formed in an arc shape.

[0294] The anti-interference part 168 can be disposed at the corner of the back side 1612 of the shock absorber and the inner side of the shock absorber 161. The anti-interference part 168 can be formed in the back side 1612 of the shock absorber to be recessed into the inner side of the shock absorber 161 or the receiving part 163.

[0295] The anti-interference part 168 may be recessed into the inner side of the damper 161 or into the receiving part 163. The anti-interference part 168 may be located at the lower part of the back surface of the damper 1612 with reference to the horizontal center line passing through the center of the vertical length of the back surface of the damper 1612 in the left-right direction.

[0296] Therefore, the anti-interference part 168 can prevent the corners of the back part 1612 of the shock absorber and the inner side part of the shock absorber 161 from interfering with a part of the cylinder block 131.

[0297] The anti-interference unit 168 may have a first anti-interference unit 168a and a second anti-interference unit 168b. The first anti-interference unit 168a may be provided on the back surface 1612 of the first damper 161a and at the corner of the inner side surface of the damper 161. The second anti-interference unit 168b may be provided on the back surface 1612 of the second damper 161b and at the corner of the inner side surface of the damper 161.

[0298] The shock absorber 161 can be configured to be spaced apart from the inner side of the housing 100 by a predetermined interval. For example, the top surface of the outer side of the shock absorber 161 can be configured to be spaced apart from the top surface of the inner side of the upper housing 101 by a predetermined interval.

[0299] The vertical length of the damper 161 can be greater than or equal to the distance between the top surface of the damper 161 and the top surface of the upper housing 101. Therefore, even if the press-fit between the receiving portion 163 of the damper 161 and the mounting portion 155 of the cylinder head 150 loosens, causing the damper 161 to move upward along the mounting portion 155, the damper 161 can be prevented from detaching from the mounting portion 155 upward by contacting the top surface of the damper 161 with the top surface of the inner side of the upper housing 101.

[0300] The front surface of the outer side of the shock absorber 161 can be configured to be spaced apart from the front surface of the inner side of the upper housing 101 by a predetermined interval. The side surface of the outer side of the shock absorber 161 can be configured to be spaced apart from the side surface of the inner side of the upper housing 101 by a predetermined interval.

[0301] Therefore, according to the present invention, a plurality of dampers 161 can be mounted on the upper side surfaces of the cylinder head 150. A mounting portion 155 can be provided on the upper side surface of the cylinder head 150. The mounting portion 155 can be formed to protrude laterally from the upper side surface of the cylinder head 150.

[0302] Mounting portion 155 may include an extension 156 and a protrusion 157. The extension 156 is formed to protrude laterally from the side of cylinder head 150. The protrusion 157 may include a first protrusion 157a and a second protrusion 157b.

[0303] The first protrusion 157a may be formed to protrude upward from the top surface of the extension 156. The second protrusion 157b may be formed to protrude downward from the bottom surface of the extension 156.

[0304] The shock absorber 161 includes a receiving portion 163. The receiving portion 163 is configured to receive and surround the mounting portion 155. The receiving portion 163 can be press-fitted into the mounting portion 155. The receiving portion 163 may have a first receiving portion 163a and a second receiving portion 163b.

[0305] The first receiving portion 163a is configured to receive and surround one side of the protrusion 157 and the extension 156. The second receiving portion 163b is configured to surround and receive a portion of the extension 156, as an example of a top surface and a bottom surface.

[0306] The shock absorber 161 also includes a locking protrusion 165. The locking protrusion 165 may have a first locking protrusion 165a and a second locking protrusion 165b. The first locking protrusion 165a may be formed to protrude from the inner side of the receiving portion 163 toward the top surface of the extension portion 156.

[0307] The second locking protrusion 165b can be formed to protrude from the inner side of the receiving portion 163 toward the bottom surface of the extension portion 156. The first locking protrusion 165a can engage with the first protrusion 157a. The second locking protrusion 165b can engage with the second protrusion 157b.

[0308] Therefore, the locking protrusion 165 can restrict the shock absorber 161 from moving from the mounting part 155 in the left and right directions.

[0309] The vibration damper 161 may further include a front portion 1611 and a back portion 1612. The front portion 1611 forms the front side of the vibration damper 161. The front portion 1611 surrounds the front side of the protrusion 157 and the extension 156. The back portion 1612 forms the back side of the vibration damper 161. The back portion 1612 surrounds the back side of the vibration damper 161.

[0310] Therefore, the front part 1611 and the back part 1612 of the shock absorber can restrict the shock absorber 161 from moving in the front-rear direction from the mounting part 155.

[0311] The vibration damper 161 may further include a top portion 1614 and a bottom portion 1615. The top portion 1614 forms the top surface of the vibration damper 161. The bottom portion 1615 forms the bottom surface of the vibration damper 161. The top portion 1614 and the bottom portion 1615 respectively surround the top and bottom surfaces of the mounting portion 155, thereby preventing the vibration damper 161 from detaching from the mounting portion 155 in the vertical direction.

[0312] The receiving portion 163 of the shock absorber 161 includes a straight portion. The straight portion is configured to face the side of the protrusion 157. The straight portion may be formed as a plane. The side surfaces of the straight portion and the protrusion 157 may be in surface contact with each other.

[0313] Therefore, by having the straight portion and the protrusion 157 of the damper 161 in surface contact with each other, the receiving portion 163 of the damper 161 and the protrusion 157 of the mounting portion 155 can be tightly fitted together. This maximizes the bonding force between the damper 161 and the mounting portion 155.

Claims

1. A compressor, characterized in that, include: case; The electric motor is located inside the housing and has a crankshaft, a rotor coupled 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 connected to the crankshaft and the piston; The cylinder head is attached to one side of the cylinder block; as well as A shock absorber is installed on the side of the cylinder head.

2. The compressor according to claim 1, characterized in that, The vibration damper is provided in multiple units; The plurality of said shock absorbers include: The first shock absorber is attached to one side of the cylinder head; as well as The second shock absorber is attached to the other side of the cylinder head in the opposite direction to the first shock absorber.

3. The compressor according to claim 1, characterized in that, The shock absorber is mounted on a mounting portion that protrudes from the side of the cylinder head; The vibration damper includes a receiving portion that surrounds and houses the mounting portion.

4. The compressor according to claim 3, characterized in that, The mounting unit includes: An extension protrudes in one direction from the side of the cylinder head; and The protrusion is formed to protrude from the extension in another direction that intersects with the first direction.

5. The compressor according to claim 4, characterized in that, The receiving portion includes: A first receiving portion, accommodating the protrusion, is formed in a straight line shape; and The second receiving portion receives the extension portion, which extends from the first receiving portion along the direction.

6. The compressor according to claim 4, characterized in that, The shock absorber has a curved section at the outer corner of the receiving portion that accommodates the protrusion; The curved surface is separated from the inner side of the housing by a predetermined interval and is formed in accordance with the curved shape of the inner side of the housing.

7. The compressor according to claim 6, characterized in that, The vibration damper includes: The top surface of the shock absorber is formed to cover the upper part of the protrusion and the extension; The front face of the shock absorber is arranged in the opposite direction to the piston, forming the front face of the shock absorber; The back side of the shock absorber, disposed towards the piston, forms the back side of the shock absorber; and The side portion of the vibration damper connects the front portion of the vibration damper and the back portion of the vibration damper; The curved surface includes: The first curved surface is formed at the corner where the top surface of the shock absorber connects to the side surface of the shock absorber; and The second curved surface is formed at the corner where the front part of the shock absorber connects to the side part of the shock absorber.

8. The compressor according to claim 4, characterized in that, The protrusions are provided in multiples; The plurality of said protrusions include: A first protrusion protrudes from one side of the extension in another direction intersecting the first direction; and The second protrusion protrudes from one side of the extension in a direction opposite to that of the first protrusion, in another direction that intersects with the first direction.

9. The compressor according to claim 8, characterized in that, The receiving portion includes a plurality of locking protrusions, which are formed to protrude toward one side of the extension portion and engage with the protrusion portion; The plurality of said card slot protrusions include: The first card slot protrusion is configured to overlap with the first protrusion along the said direction; as well as The second locking protrusion is configured to overlap with the second protrusion along the said direction.

10. The compressor according to claim 4, characterized in that, The vibration damper includes: The rear portion of the shock absorber, positioned towards the piston, surrounds the rear of the protrusion and the extension; and The front face of the shock absorber is arranged in the opposite direction to the piston, surrounding the front face of the protrusion and the extension.

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