WO2023204355A1

WO2023204355A1 - Reciprocating compressor

Info

Publication number: WO2023204355A1
Application number: PCT/KR2022/010938
Authority: WO
Inventors: 김영환; 김진국; 김승욱
Original assignee: 엘지전자 주식회사
Priority date: 2022-04-20
Filing date: 2022-07-26
Publication date: 2023-10-26
Also published as: KR20230149578A

Abstract

A reciprocating compressor is provided. A reciprocating compressor according to one aspect of the present specification may comprise: a case; a drive motor disposed inside the case; a rotary shaft connected to the drive motor; a cylinder disposed inside the case and forming a compression space; a piston that linearly reciprocates in the cylinder according to the rotation of the rotary shaft; a valve assembly including a suction hole and a discharge hole and coupled to the front end of the cylinder; a suction muffler coupled to the valve assembly and communicating with the suction hole; a suction pipe passing through the case and facing a muffler hole of the suction muffler; and a first guide member coupled to the muffler hole of the suction muffler and overlapping the suction pipe in a vertical direction.

Description

Recipro Compressor

This specification relates to a reciprocating compressor. More specifically, it relates to a reciprocating compressor that compresses refrigerant by the linear reciprocating motion of a piston.

In general, a compressor refers to a device that receives power from a power generating device such as a motor or turbine and compresses a working fluid such as air or refrigerant. Specifically, compressors are widely applied throughout industry and home appliances, especially vapor compression refrigeration cycles (hereinafter referred to as 'refrigeration cycles').

These compressors can be classified into reciprocating compressors, rotary compressors, and scroll compressors depending on the method of compressing the refrigerant.

The reciprocating compressor compresses the fluid by forming a compression space between the piston and the cylinder and the piston moves in a straight line, the rotary compressor compresses the fluid by a roller rotating eccentrically inside the cylinder, and the scroll compressor uses a spiral compressor. This is a method in which a pair of scrolls are engaged and rotated to compress the fluid.

Recipro compressors can be divided into vibration type and connected type depending on the driving method of the piston. The vibrating type reciprocating compressor compresses the refrigerant while the piston is connected to the mover of the drive motor and vibrates in a reciprocating motion in the cylinder. In the connected type reciprocating compressor, a connecting rod is coupled to the rotating shaft of the driving motor and the connecting rod This is a method in which the piston is combined to convert the rotational force of the drive motor into the linear motion of the piston.

This specification relates to a connected Recipro compressor. Hereinafter, the connected Recipro compressor is referred to as a 'Recipro compressor'.

Referring to FIG. 9, a conventional reciprocating compressor operating at low speed includes a case 110, an intake muffler 125 disposed inside the case 110 and including a muffler hole 1252, and a suction muffler 125 that penetrates the case 110. and includes a suction pipe 102 facing the muffler hole 1252.

In this case, in order to prevent oil (O1) flowing along the wall of the suction muffler 125 from flowing into the interior of the muffler hole 1252, an oil blocking wall 187 formed on the outer surface of the suction muffler 125 is installed. is formed.

However, when the reciprocating compressor operates at high speed, oil (O2) in the form of mist flows into the interior of the suction muffler 125 through the muffler hole 1252, like the refrigerant flowing through the suction pipe 102. .

When a large amount of oil (O2) in the form of mist flows into the suction muffler 125, the flow rate of the suction refrigerant decreases, leading to a decrease in compression efficiency.

In addition, since the oil (O2) in the form of mist has a higher temperature than the suction refrigerant, there is a problem that the cooling power of the suction refrigerant is lowered and compression efficiency is lowered.

The problem that this specification aims to solve is to provide a compressor with a recipe that can increase the flow rate and cooling power of the intake refrigerant and improve compression efficiency by preventing a large amount of oil in the form of mist from flowing into the interior of the intake muffler. .

In addition, the problem that this specification seeks to solve is to provide a reciprocating compressor that can prevent the refrigerant flowing through the suction pipe from leaking.

In addition, the problem to be solved by this specification is to provide a recipe compressor that can compensate for the tolerance between the first guide member and the suction pipe and prevent a large amount of oil in the form of mist from flowing into the interior of the suction muffler. .

Additionally, the problem that this specification aims to solve is to provide a reciprocating compressor that can improve space efficiency.

In addition, the problem to be solved by this specification is to provide a reciprocating compressor in which the first guide member can be stably fixed to the intake muffler and ease of coupling can be improved.

In addition, the problem to be solved by this specification is to provide a reciprocating compressor that can improve space efficiency and compensate for tolerances that may occur between the suction muffler and the first guide member.

In addition, the problem to be solved by this specification is to provide a reciprocating compressor that can compensate for the tolerance between the suction muffler, the suction pipe, and the first guide member.

In addition, the problem to be solved by this specification is to provide a compressor with a recipe that can prevent a large amount of oil in the form of mist flying to the top of the compression mechanism from moving to the area where the muffler hole of the intake muffler is located.

In addition, the problem that this specification aims to solve is a recipe that can prevent damage to the product due to vibration since the blocking portion and the case do not come into direct contact, while maintaining a constant gap between the inner surface of the case and the blocking portion. A compressor is provided.

In addition, the problem to be solved by this specification is to provide a reciprocating compressor that can improve the ease of coupling between the blocking unit and the cylinder.

In addition, the problem that the present specification seeks to solve is to provide a reciprocating compressor that can guide the oil flowing down from the front of the blocking unit to the lower part of the compression mechanism.

A reciprocal compressor according to an aspect of the present specification for achieving the above problem includes a case, a drive motor disposed within the case, a rotation shaft connected to the drive motor, and a compressor disposed within the case. A cylinder forming a space, a piston that linearly reciprocates within the cylinder as the rotation shaft rotates, a valve assembly including a suction hole and a discharge hole and coupled to the tip of the cylinder, and a valve assembly coupled to the valve assembly and It includes a suction muffler in communication with the suction hole, a suction pipe that penetrates the case and faces the muffler hole of the suction muffler, and a first guide member coupled to the muffler hole of the suction muffler and overlapping the suction pipe in a vertical direction. can do.

Through this, the flow rate and cooling power of the intake refrigerant can be increased by preventing a large amount of oil in the form of mist from flowing into the interior of the intake muffler, and the compression efficiency of the reciprocating compressor can be improved.

Additionally, at least a portion of the suction pipe may be disposed inside the first guide member.

Through this, it is possible to prevent the refrigerant flowing through the suction pipe from leaking.

Additionally, the distance between the first guide member and the upper area of the suction pipe may be shorter than the distance between the first guide member and the lower area of the suction pipe.

Additionally, a horizontal length over which the suction pipe and the first guide member vertically overlap may be longer than the distance between the first guide member and the inner surface of the case.

In addition, the horizontal length over which the suction pipe and the first guide member vertically overlap may be shorter than the distance between the suction pipe and the muffler hole of the suction muffler.

Through this, it is possible to compensate for the tolerance between the first guide member and the suction pipe and prevent a large amount of oil in the form of mist from flowing into the interior of the suction muffler.

Additionally, the inner diameter of at least a portion of the first guide member may increase as it faces the case.

Through this, space efficiency can be improved.

In addition, the first guide member includes a first area in contact with the muffler hole of the suction muffler, a second area extending from the first area and in contact with the inner surface of the suction muffler, and in the first area a third region that extends and contacts the outer surface of the suction muffler, a fourth region that extends from the third region and has an inner diameter that increases toward the case, and that extends from the fourth region toward the case and includes the suction pipe and It may include a fifth area that overlaps in the vertical direction.

In this case, the suction muffler is formed concavely from the outer surface to the inside and includes a seating groove connected to the muffler hole, and the third region of the first guide member may be in contact with the seating groove.

Through this, the first guide member can be stably fixed to the intake muffler and ease of coupling can be improved.

In addition, the suction muffler includes a connection portion connecting the outer surface of the suction muffler and the seating groove, and the angle of the connection portion with respect to the third region is greater than the angle of the fourth region with respect to the third region. It can be.

In this case, a space may be formed between the seating groove, the connection portion, and the fourth region.

Through this, space efficiency can be improved and tolerances that may occur between the intake muffler and the first guide member can be compensated.

Additionally, a straight line extending from the center of the suction pipe in the horizontal direction may be tilted at a predetermined angle with a straight line extending in the horizontal direction of the first guide member.

Through this, it is possible to compensate for the tolerance between the suction muffler, the suction pipe, and the first guide member.

In addition, it may include a discharge cover coupled to the valve assembly and in communication with the discharge hole, and a blocking portion surrounding the upper surface of the cylinder and the upper surface of the discharge cover and disposed adjacent to the inner surface of the case.

In this case, the blocking unit may isolate the upper area of the area where the piston is placed from the upper area of the area where the muffler hole of the intake muffler is placed.

Through this, it is possible to prevent a large amount of oil in the form of mist flying to the upper part of the compression mechanism from moving to the area where the muffler hole of the suction muffler is located.

Additionally, the blocking portion may be formed in a flat shape, and its upper surface may be formed in an arc shape corresponding to the inner surface of the case.

Through this, since the blocking part and the case do not come into direct contact, damage to the product due to vibration can be prevented, and the distance between the inner surface of the case and the blocking part can be kept constant.

Additionally, the cylinder may include a boss that protrudes forward from one surface, and the blocking portion may include a coupling hole penetrated by the boss.

Through this, the ease of coupling between the blocking unit and the cylinder can be improved.

Additionally, the discharge cover includes a second guide member that protrudes upward from the top surface, and the rear surface of the second guide member may contact the front surface of the blocking unit.

In this case, the front surface of the guide member may be inclined at a predetermined angle.

In addition, the discharge cover includes a third guide member that protrudes upward from the outer surface and is connected to the second guide member, and a fourth guide member that protrudes forward from the outer surface and extends in the vertical direction. , the fourth guide member may be connected to the third guide member.

Through this, the oil that collects and flows down in front of the blocking unit can be guided to the lower part of the compression mechanism unit.

Through this specification, it is possible to provide a compressor with a recipe that can increase the flow rate and cooling power of the intake refrigerant and improve compression efficiency by preventing a large amount of oil in the form of mist from flowing into the interior of the intake muffler.

In addition, through this specification, a reciprocating compressor can be provided that can prevent the refrigerant flowing through the suction pipe from leaking.

In addition, through this specification, it is possible to provide a compressor with a recipe that can compensate for the tolerance between the first guide member and the suction pipe and prevent a large amount of oil in the form of mist from flowing into the interior of the suction muffler.

In addition, through this specification, a recipipro compressor that can improve space efficiency can be provided.

In addition, through the present specification, it is possible to provide a compressor with a recipe in which the first guide member can be stably fixed to the intake muffler and ease of coupling can be improved.

In addition, through the present specification, it is possible to provide a reciprocating compressor that can improve space efficiency and compensate for tolerances that may occur between the intake muffler and the first guide member.

In addition, through this specification, a compressor with a recipe that can compensate for the tolerance between the suction muffler, the suction pipe, and the first guide member can be provided.

In addition, through the present specification, it is possible to provide a compressor with a recipe that can prevent a large amount of oil in the form of mist flying to the upper part of the compression mechanism from moving to the area where the muffler hole of the suction muffler is located.

In addition, through this specification, a recipe compressor can be provided that can prevent damage to the product due to vibration since the blocking portion and the case do not come into direct contact, while maintaining a constant gap between the inner surface of the case and the blocking portion. You can.

In addition, through the present specification, a reciprocating compressor that can improve the ease of coupling between the blocking unit and the cylinder can be provided.

In addition, through this specification, it is possible to provide a compressor with a recipe that can guide the oil flowing down from the front of the blocking unit to the lower part of the compression mechanism.

1 is a cross-sectional view of a reciprocal compressor according to an embodiment of the present specification.

Figure 2 is an enlarged view of one area of Figure 1.

Figure 3 is a cross-sectional view of a reciprocal compressor according to an embodiment of the present specification.

Figure 4 is a perspective view of the discharge cover, suction muffler, and blocking portion of the Recipro compressor according to an embodiment of the present specification.

Figure 5 is a cross-sectional view of the discharge cover and the blocking portion of the Recipro compressor according to an embodiment of the present specification.

Figure 6 is a perspective view of the case, discharge cover, suction muffler, suction pipe, first guide member, and blocking portion of the Recipro compressor according to an embodiment of the present specification.

Figure 7 is a cross-sectional view of the case, suction muffler, suction pipe, and first guide member of the Recipro compressor.

Figure 8 is a longitudinal cross-sectional view of the case, suction muffler, suction pipe, and first guide member of the reciprocal compressor.

Figure 9 is a schematic diagram of a case, suction muffler, suction pipe, and oil barrier wall of a reciprocal compressor according to the prior art.

Hereinafter, embodiments disclosed in the present specification (discloser) will be described in detail with reference to the attached drawings. However, identical or similar components will be assigned the same reference numbers regardless of reference numerals, and duplicate descriptions thereof will be omitted.

In describing the embodiments disclosed herein, when a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component. It should be understood that other components may exist in the middle.

Additionally, in describing the embodiments disclosed in this specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed descriptions will be omitted. In addition, the attached drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed in this specification is not limited by the attached drawings, and all changes included in the spirit and technical scope of this specification are not limited. , should be understood to include equivalents or substitutes.

Meanwhile, the term ‘discloser’ can be replaced with terms such as document, specification, description, etc.

1 is a cross-sectional view of a reciprocal compressor according to an embodiment of the present specification. Figure 2 is an enlarged view of one area of Figure 1.

Referring to Figures 1 and 2, the reciprocal compressor 100 according to an embodiment of the present specification includes a case 110, a compression mechanism 120, a drive motor 140, a rotation shaft 130, It may include a bearing 150, a fixed fastening member 160, a support member 170, and an elastic assembly 200, but may be implemented excluding some of these components, and excludes additional components. I don't even do it.

The case 110 may form the exterior of the compressor 100 as a recipe. Inside the case 110, there is a compression mechanism unit 120, a drive motor 140, a rotating shaft 130, a bearing 150, a fixed fastening member 160, a support member 170, and an elastic assembly ( 200) can be placed. Inside the case 110, a compression mechanism 120 for compressing the sucked refrigerant is disposed in the upper area, and a rotation shaft 130 and a drive motor 140 connected to the compression mechanism 120 are located on the lower side of the compression mechanism 120. ) can be placed.

The drive motor 140 may be disposed inside the case 110. The drive motor 140 may be fixed inside the case 110. The drive motor 140 may generate rotational force. The drive motor 140 may transmit rotational force to the compression mechanism 120 to compress the refrigerant. The driving motor 140 may be connected to the rotation shaft 130. As the rotation shaft 130 rotates by driving the drive motor 140, the refrigerant can be compressed within the compression mechanism unit 120.

The driving motor 140 may include

rotors

141 and 142, a stator 143, and a coil 144 wound around the stator 143. The stator 143 may be formed by stacking a plurality of core plates. A first rotor 141 may be rotatably disposed inside the stator 143, and a second rotor 142 may be rotatably disposed outside the stator 143. The first rotor 141 may be coupled to the rotation shaft 130 through a bearing 150. The second rotor 142 may be coupled to the rotation shaft 130 through the rotor plate 145. When power is applied to the coil 144, the

rotors

141 and 142 may rotate the rotation shaft 130 by interacting with the stator 143.

The first rotor 141 and the second rotor 142 can be selectively driven. Through this, efficient driving is possible and power consumption can be reduced by adjusting the drive according to the driving section.

An air gap may be formed between the stator 143 and the first rotor 141, and an air gap may be formed between the stator 143 and the second rotor 142. The rotor plate 145 has through holes formed at positions corresponding to the gap formed between the stator 143 and the first rotor 141 and the gap formed between the stator 143 and the second rotor 142. It may include (145a). An air gap is formed between the stator 143 and the first rotor 141 by inserting a gap liner (not shown) through the through hole 145a, and an air gap is formed between the stator 143 and the second rotor 142. It is possible to have this constant radial gap.

The drive motor 140 may be fixed to the cylinder 123 by a fixed fastening member 160. The stator 143 of the driving motor 140 may be fixed to the cylinder 123 by a fixed fastening member 160. The fixed fastening member 160 may extend in the vertical direction. The fixed fastening member 160 may be inserted and coupled to the protrusion 147 disposed on the upper part of the stator 143. The stator 143 and the protrusion 147 may be formed of different materials. In this case, an insulator 146 may be formed on the upper surface of the stator 143 to insulate the stator 143.

The compression mechanism unit 120 may compress the refrigerant by receiving rotational force from the drive motor 140. The compression mechanism unit 120 can compress and discharge the sucked refrigerant. The compression mechanism unit 120 includes a cylinder 123, a connecting rod 121, a piston 122, a valve assembly 126, an intake valve 127, an intake muffler 125, and a discharge valve 128. ) and a discharge cover 124.

The cylinder 123 forms a compressed space V1 and can be fixed inside the case 110. The refrigerant sucked into the compression space V1 may be compressed by the reciprocating motion of the piston 122 and then discharged to the outside.

The connecting rod 121 may be rotatably connected to the rotation shaft 130. The connecting rod 121 may be connected to the piston 122. Rotation by the drive motor 140 can be converted into linear reciprocating motion.

The piston 122 may be rotatably connected to the connecting rod 121. The piston 122 may reciprocate linearly within the cylinder 123. The piston 122 may compress the refrigerant in the compression space (V1).

Valve assembly 126 may be coupled to cylinder 123. The valve assembly 126 may be coupled to the tip of the cylinder 123. The valve assembly 126 may include a suction hole and a discharge hole. In one embodiment of the present specification, the valve assembly 126 is described as being formed in a plate shape, but is not limited thereto. The suction hole of the valve assembly 126 communicates with the suction muffler 125 to suction refrigerant. The discharge hole of the valve assembly 126 communicates with the discharge cover 124 to discharge compressed refrigerant.

Intake valve 127 may be coupled to valve assembly 126. The intake valve 127 may be coupled to one side of the valve assembly 126. Intake valve 127 may be disposed inside the valve assembly 126. For example, intake valve 127 may be disposed between valve assembly 126 and cylinder 123. The suction valve 127 may open and close the suction hole of the valve assembly 126.

Discharge valve 128 may be coupled to valve assembly 126. The discharge valve 128 may be coupled to the other side of the valve assembly 126. The discharge valve 128 may be disposed outside the valve assembly 126. For example, the discharge valve 128 may be disposed between the valve assembly 126 and the discharge cover 124. The discharge valve 128 may open and close the discharge hole of the valve assembly 126.

Intake muffler 125 may be coupled to valve assembly 126. The intake muffler 125 may be coupled to the other side of the valve assembly 126. The intake muffler 125 may be coupled to the outside of the valve assembly 126. The suction muffler 125 may communicate with the suction hole of the suction muffler 125. The suction muffler 125 may be combined with the discharge cover 124. The suction muffler 125 may be fitted with the discharge cover 124.

Discharge cover 124 may be coupled to valve assembly 126. The discharge cover 124 may be coupled to the other side of the valve assembly 126. The discharge cover 124 may communicate with the discharge hole of the valve assembly 126. The discharge cover 124 may form a discharge space V2. The refrigerant compressed by the piston 122 flows into the discharge space V2 through the discharge hole, and the refrigerant flowing into the discharge space V2 may be discharged to the outside.

The rotation axis 130 may extend in the vertical direction. The rotation axis 130 may extend in the vertical direction. The rotation axis 130 may be placed inside the case 110. The rotation shaft 130 may be connected to the driving motor 140. The rotation shaft 130 may be connected to the compression mechanism 120. The rotation shaft 130 may be rotated by the drive motor 140 to transmit rotational force for compressing the refrigerant to the compression mechanism unit 120.

When the rotating shaft 130 rotates, the oil feeder 131 installed at the bottom of the rotating shaft 130 pumps the oil stored in the case 110, and some of the oil flows through the oil passage 132 of the rotating shaft 130. It is supplied to the bearing surface as it is absorbed, and some of the oil may scatter from the top of the rotating shaft 130 and be supplied between the cylinder 123 and the piston 122.

Bearing 150 may be coupled to the rotating shaft 130. Bearing 150 may be a one-way bearing. The bearing 150 may be disposed on the outer peripheral surface of the rotating shaft 130. The bearing 150 may be disposed between the rotation shaft 130 and the first rotor 141. The bearing 150 can transmit only the rotational force generated by rotation of the first rotor 141 in one direction to the rotation shaft 130. For example, the first rotor 141 may rotate clockwise or counterclockwise by interaction with the stator 143, and the bearing 150 applies rotational force to the rotary shaft 130 only for clockwise (forward) rotation. ), and for counterclockwise (reverse) rotation, the rotational force may not be transmitted to the rotation shaft 130. Through this, two driving modes can be implemented by rotating both the first rotor 141 and the second rotor 142 in the forward direction, or by transmitting rotational force to the rotation shaft 130 while rotating only the second rotor 142 in the reverse direction. You can.

The support member 170 may support the compression mechanism 120. The support member 170 may support the lower portion of the compression mechanism 120. The support member 170 may extend long in the vertical direction. The support member 170 may be formed in a cylindrical shape, but is not limited thereto and may have a polygonal cross-section. The upper region of the support member 170 may be coupled to the lower portion of the compression mechanism 120, and the lower region of the support member 170 may be coupled to the upper region of the elastic assembly 200. For example, the upper portion of the support member 170 may be bolted to a lower region of the compression mechanism 120, and the lower portion of the support member 170 may be bolted to an upper region of the elastic assembly 200.

The support member 170 may include a plurality of support members. In one embodiment of the present specification, the number of the plurality of support members is 4 as an example, but the number is not limited to this and the number of the plurality of support members may be changed in various ways.

The elastic assembly 200 may be disposed between the support member 170 and the case 110. The elastic assembly 200 may extend in a vertical direction. The lower region of the elastic assembly 200 is seated on the inner surface of the case 110, and the upper region of the elastic assembly 200 is coupled to the lower region of the support member 170 and compressed against the inner surface of the case 110. The mechanical part 120 can be elastically supported.

Figure 3 is a cross-sectional view of a reciprocal compressor according to an embodiment of the present specification. Figure 4 is a perspective view of the discharge cover, suction muffler, and blocking portion of the Recipro compressor according to an embodiment of the present specification. Figure 5 is a cross-sectional view of the discharge cover and the blocking portion of the Recipro compressor according to an embodiment of the present specification. Figure 6 is a perspective view of the case, discharge cover, suction muffler, suction pipe, first guide member, and blocking portion of the Recipro compressor according to an embodiment of the present specification. Figure 7 is a cross-sectional view of the case, suction muffler, suction pipe, and first guide member of the Recipro compressor. Figure 8 is a longitudinal cross-sectional view of the case, suction muffler, suction pipe, and first guide member of the reciprocal compressor.

1 to 8, the detailed configuration of the reciprocal compressor 100 according to an embodiment of the present specification will be described.

The suction pipe 102 may be coupled to the case 110. The suction pipe 102 may penetrate the case 110 and at least a portion of the suction pipe 102 may be disposed inside the case 110. An elastic member 104 may be disposed between the suction pipe 102 and the case 110. Through this, vibration generated during operation of the reciprocating compressor 100 and transmitted to the suction pipe 102 can be reduced, and damage to the suction pipe 102 and case 110 can be prevented.

The suction pipe 102 may face the suction muffler 125. Specifically, the suction pipe 102 may face the muffler hole 1252 of the suction muffler 125. That is, external refrigerant may be supplied to the muffler hole 1252 of the suction muffler 125 disposed inside the case 110 through the suction pipe 102. The suction pipe 102 may be spaced apart from the suction muffler 125. This is because, when the suction pipe 102 is coupled to the muffler hole 1252 of the suction muffler 125, leakage of refrigerant may occur due to vibration generated during operation of the reciprocating compressor 100.

Intake muffler 125 may be coupled to valve assembly 126. The suction muffler 125 may communicate with the suction hole of the valve assembly 126. The suction muffler 125 may include a muffler hole 1252 facing the suction pipe 102. The cross section of the muffler hole 1252 may be formed in a circular shape, but is not limited to this and may be changed in various ways. A first guide member 188 may be coupled to the muffler hole 1252. The first guide member 188 may be fitted or press-fitted into the muffler hole 1252.

The suction muffler 125 has a seating groove 1254 that is concavely formed from the outer surface inward and is connected to the muffler hole 1252, and a connection portion 1256 that connects the outer surface of the suction muffler 125 and the seating groove 1254. ) may include. The third region 1885 of the first guide member 188 may be seated in the seating groove 1254. The connection portion 1256 may face the fourth region 1886 of the first guide member 188. The angle of the connection portion 1256 with respect to the third area 1885 may be greater than the angle of the fourth area 1886 with respect to the third area 1885. Through this, space efficiency can be improved and tolerances that may occur between the intake muffler 125 and the first guide member 188 can be compensated.

The first guide member 188 may be coupled to the suction muffler 125. The first guide member 188 may be coupled to the muffler hole 1252 of the suction muffler 125. The first guide member 188 may be formed of an elastic material. The first guide member 188 may be fitted or press-fitted into the muffler hole 1252.

The first guide member 188 may be coupled to the suction muffler 125 and protrude to the inner surface of the case 110. The first guide member 188 may not be in direct contact with the suction pipe 102. The first guide member 188 may be spaced apart from the suction pipe 102. The first guide member 188 may overlap the suction pipe 102 in a vertical direction. In one embodiment of the present specification, the vertical direction may be interpreted to mean a vertical direction with respect to FIG. 1.

Through this, the flow rate and cooling power of the suction refrigerant can be increased by preventing a large amount of oil in the form of mist from flowing into the interior of the suction muffler 125, and the compression efficiency of the reciprocating compressor 100 can be improved.

At least a portion of the suction pipe 102 may be disposed inside the first guide member 188. Through this, the refrigerant flowing through the suction pipe 102 can be prevented from leaking into the inner space of the case 110.

The distance L4 between the first guide member 188 and the upper region of the suction pipe 102 may be shorter than the distance L5 between the first guide member 188 and the lower region of the suction pipe 102. The horizontal length (L1) where the suction pipe 102 and the first guide member 188 overlap in the vertical direction may be longer than the distance (L2) between the first guide member 188 and the inner surface of the case 110. . The horizontal length (L1) where the suction pipe 102 and the first guide member 188 overlap in the vertical direction may be shorter than the distance (L3) between the suction pipe 102 and the muffler hole 1252 of the suction muffler 125. there is.

Through this, it is possible to compensate for the tolerance between the first guide member 188 and the suction pipe 102 and prevent a large amount of oil in the form of mist from flowing into the interior of the suction muffler 125. In addition, oil in the form of mist may be partially allowed to flow into the interior of the suction muffler 125. The oil that has partially flowed into the intake muffler 125 may serve as lubrication or sealing between the inner surface of the cylinder 123 and the outer surface of the piston 122.

At least a portion of the first guide member 188 may have an inner diameter that increases as it faces the case 110 . Through this, the space efficiency of the reciprocating compressor 100 can be improved.

The straight line I1 extending from the first guide member 188 in the horizontal direction may be tilted at a predetermined angle with the straight line I2 extending from the center of the suction pipe 102 in the horizontal direction. Through this, the tolerance between the suction muffler 125, the suction pipe 102, and the first guide member 188 can be compensated.

The first guide member 188 may include first to

fifth regions

1882, 1884, 1885, 1886, and 1887.

The first area 1882 may contact the muffler hole 1252 of the intake muffler 125. The second region 1884 may extend from the first region 1882 and contact the inner surface of the suction muffler 125. The third area 1885 may extend from the first area 1882 and contact the outer surface of the suction muffler 125. The third area 1885 may contact the seating groove 1254. The first to

third regions

1882, 1884, and 1885 may be formed of an elastic material. Through this, the first guide member 188 can be stably fixed to the suction muffler 125, and the ease of coupling the first guide member 1188 to the suction muffler 125 can be improved.

The fourth region 1886 extends from the third region 1885 and may have an inner diameter that increases toward the case 110 . The fourth area 1886 may face the connection portion 1256 of the intake muffler 125. The angle of the fourth area 1886 with respect to the third area 1885 may be smaller than the angle of the connection portion 1256 with respect to the third area 1885. A space may be formed between the seating groove 1254, the connection portion 1256, and the fourth region 1886. Through this, space efficiency can be improved and tolerances that may occur between the intake muffler 125 and the first guide member 188 can be compensated.

The fifth area 1887 extends from the fourth area 1886 toward the case 110 and may overlap the suction pipe 102 in a vertical direction. In one embodiment of the present specification, only the fifth area 1887 overlaps the suction pipe 102 in the vertical direction. However, the fourth area 1886 may also overlap the suction pipe 102 in the vertical direction.

The reciprocating compressor 100 may include a blocking unit 190. The blocking unit 190 may be disposed on the upper surface of the cylinder 123. The blocking portion 190 may surround the upper surface of the cylinder 123. The blocking unit 190 may be disposed on the upper surface of the discharge cover 124. The blocking portion 190 may surround the upper surface of the discharge cover 124. The blocking portion 190 simultaneously surrounds the upper surface of the cylinder 123 and the upper surface of the discharge cover 124 and may be disposed adjacent to the inner surface of the case 110.

The blocking portion 190 may isolate the upper area of the area where the piston 122 is placed from the upper area of the area where the muffler hole 1252 of the intake muffler 125 is placed.

Through this, it is possible to prevent a large amount of oil in the form of mist flying to the upper part of the compression mechanism 120 from moving to the area where the muffler hole 1252 of the suction muffler 125 is located.

The blocking portion 190 may be formed in a flat shape. The lower surface of the blocking unit 190 may be formed in a shape corresponding to the upper surface of the cylinder 123 and/or the upper surface of the discharge cover 124. The upper surface of the blocking unit 190 may be formed in a shape corresponding to the inner surface of the case 110 facing the upper surface of the blocking unit 190. The blocking portion 190 may be spaced apart from the inner surface of the case 110. The blocking portion 190 may be disposed adjacent to the inner surface of the case 110.

Through this, since the blocking part 190 and the case 110 do not come into direct contact, damage to the product due to vibration can be prevented, and the distance between the inner surface of the case 110 and the blocking part 190 is maintained constant. You can.

The blocking portion 190 may include a coupling hole 192. The coupling hole 192 may be penetrated by a boss 1232 protruding forward from one surface of the cylinder 123. The coupling hole 192 and the boss 1232 of the cylinder 123 may be fitted or press-fitted. Alternatively, the boss 1232 may be fixed through the adhesive while penetrating the coupling hole 192. Through this, the ease of coupling between the blocking portion 190 and the cylinder 123 can be improved.

In one embodiment of the present specification, the front refers to the direction of the compression mechanism 120 with respect to the blocking portion 190, and the rear may be interpreted to mean the opposite direction of the compression mechanism 120. For example, based on FIG. 1, the front can be interpreted as meaning the right side and the rear can be interpreted as meaning the left.

The discharge cover 124 may include a second guide member 1242 that protrudes upward. The rear surface of the second guide member 1242 may contact the front surface of the blocking unit 190. Through this, the position of the blocking unit 190 can be guided. The front surface 1244 of the second guide member 1242 may be inclined at a predetermined angle.

The discharge cover 124 may include a third guide member 1246 that protrudes upward from the outer surface. The third guide member 1246 may be connected to the second guide member 1242. The third guide member 1246 may be formed in a shape corresponding to the outer surface of the discharge cover 124. The third guide member 1246 may be formed only in front of the blocking portion 190. The third guide member 1246 may be formed in a curved shape. Like the second guide member 1242, the inner surface of the third guide member 1246 may be inclined at a predetermined angle.

The discharge cover 124 may include a fourth guide member 1248 that protrudes forward from the outer surface. The fourth guide member 1248 may extend in the vertical direction. The fourth guide member 1248 may be connected to the third guide member 1246.

Through this, the oil that flows down and gathers in front of the blocking portion 190 can be guided to the lower part of the compression mechanism portion 120. That is, the oil blocked by the blocking portion 190 can be prevented from flowing down and flowing into the muffler hole 1252 of the suction muffler 125.

Any or other embodiments of the present disclosure described above are not exclusive or distinct from each other. Certain embodiments or other embodiments of the present specification described above may have their respective components or functions used in combination or combined.

For example, this means that configuration A described in a specific embodiment and/or drawing may be combined with configuration B described in other embodiments and/or drawings. In other words, even if the combination between components is not directly explained, it means that combination is possible, except in cases where it is explained that combination is impossible.

The above detailed description should not be construed as restrictive in any respect and should be considered illustrative. The scope of this specification should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of this specification are included in the scope of this specification.

Claims

case;

a drive motor disposed inside the case;

a rotation shaft connected to the drive motor;

a cylinder disposed inside the case and forming a compressed space;

a piston that linearly reciprocates within the cylinder according to rotation of the rotation shaft;

a valve assembly including a suction hole and a discharge hole and coupled to the tip of the cylinder;

a suction muffler coupled to the valve assembly and in communication with the suction hole;

a suction pipe passing through the case and facing the muffler hole of the suction muffler; and

A reciprocating compressor including a first guide member coupled to the muffler hole of the suction muffler and overlapping the suction pipe in a vertical direction.
According to claim 1,

A reciprocating compressor wherein at least a portion of the suction pipe is disposed within the first guide member.
According to claim 2,

A reciprocal compressor wherein the distance between the first guide member and the upper region of the suction pipe is shorter than the distance between the first guide member and the lower region of the suction pipe.
According to claim 1,

The horizontal length over which the suction pipe and the first guide member vertically overlap is longer than the distance between the first guide member and the inner surface of the case.
According to claim 1,

A horizontal length over which the suction pipe and the first guide member vertically overlap is shorter than the distance between the suction pipe and the muffler hole of the suction muffler.
According to claim 1,

A reciprocating compressor wherein an inner diameter of at least a portion of the first guide member increases toward the case.
According to claim 1,

The first guide member is,

a first area in contact with the muffler hole of the intake muffler;

a second region extending from the first region and contacting an inner surface of the suction muffler;

A reciprocating compressor comprising a third region extending from the first region and contacting an outer surface of the suction muffler.
According to claim 7,

The first guide member is,

a fourth region extending from the third region and having an inner diameter that increases toward the case;

A reciprocating compressor comprising a fifth region extending from the fourth region toward the case and vertically overlapping the suction pipe.
According to claim 8,

The suction muffler is concave from the outer surface to the inner side and includes a seating groove connected to the muffler hole,

The third region of the first guide member is in contact with the seating groove.
According to clause 9,

The suction muffler includes a connection portion connecting the outer surface of the suction muffler and the seating groove,

The reciprocal compressor wherein the angle of the connection part with respect to the third area is formed to be greater than the angle of the fourth area with respect to the third area.
According to claim 10,

A reciprocating compressor in which a separation space is formed between the seating groove, the connection portion, and the fourth region.
According to claim 1,

A straight line extending horizontally from the center of the suction pipe is tilted at a predetermined angle with a straight line extending the first guide member in the horizontal direction.
According to claim 1,

a discharge cover coupled to the valve assembly and communicating with the discharge hole; and

A blocking portion surrounds the upper surface of the cylinder and the upper surface of the discharge cover and is disposed adjacent to the inner surface of the case,

The blocking unit isolates an upper area of the area where the piston is disposed from an upper area of the area where the muffler hole of the suction muffler is disposed.
According to claim 13,

The reciprocating compressor wherein the blocking portion is formed in a flat shape, and the upper surface is formed in an arc shape corresponding to the inner surface of the case.
According to claim 13,

The cylinder includes a boss protruding forward from one surface,

A reciprocal compressor wherein the blocking unit includes a coupling hole penetrated by a boss.
According to claim 13,

The discharge cover includes a second guide member protruding upward from the upper surface,

A reciprocating compressor in which the rear surface of the second guide member is in contact with the front surface of the blocking unit.
According to claim 16,

A recipe compressor where the front of the guide member is inclined at a predetermined angle.
According to claim 16,

The discharge cover protrudes upward from the outer surface and includes a third guide member connected to the second guide member.
According to claim 18,

The discharge cover protrudes forward from the outer surface and includes a fourth guide member extending in the vertical direction,

The fourth guide member is a reciprocating compressor connected to the third guide member.
case;

a drive motor disposed inside the case;

a rotation shaft connected to the drive motor;

a cylinder disposed inside the case and forming a compressed space;

a piston that linearly reciprocates within the cylinder according to rotation of the rotation shaft;

a valve assembly including a suction hole and a discharge hole and coupled to the tip of the cylinder;

a suction muffler coupled to the valve assembly and in communication with the suction hole;

a suction pipe passing through the case and facing the muffler hole of the suction muffler;

a discharge cover coupled to the valve assembly and communicating with the discharge hole; and

Surrounding the upper surface of the cylinder and the upper surface of the discharge cover, and comprising a blocking portion disposed adjacent to the inner surface of the case,

The blocking unit isolates an upper area of the area where the piston is disposed from an upper area of the area where the muffler hole of the suction muffler is disposed.