JP2006138238A - Hermetic compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress input variation by preventing intermittent splash and adhesion of oil to a vicinity of a delivery lead and stabilizing behavior of the delivery lead. <P>SOLUTION: A delivery valve device 114 includes a delivery port 141 communicating with an inside of a cylinder 111, the delivery lead 142 made of a tongue shape flat spring opening and closing the delivery port 141, a stopper 144 regulating motion of the delivery lead 142 in a recess part 140 provided on an anti-cylinder 111 side of a valve plate 113. A delivery space 116 is divided into roughly two chambers by a wall 150 projecting upward, an outlet port 152 bored on a valve plate 113 opens in one chamber 151 of the two chambers and a blow out port 155 blowing out refrigerant gas 107 to an outer circumference 154 direction of another chamber 153 is formed in the recess part 140. Consequently, the oil is hardly stored at a lower side in the gravity direction of another chamber 153 and intermittent splash and adhesion of oil to the delivery lead 142 can be prevented. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hermetic compressor used in a refrigerator-freezer or the like.

  As a conventional hermetic compressor, there is a compressor equipped with a discharge valve device that improves energy efficiency by reducing noise during opening and closing of the discharge lead while reducing noise during operation (for example, patent document) 1).

  Hereinafter, the conventional hermetic compressor will be described with reference to the drawings.

  7 is a cross-sectional view of a conventional hermetic compressor, FIG. 8 is a plan view of the conventional hermetic compressor, FIG. 9 is a side cross-sectional view of a discharge valve device of the conventional hermetic compressor, and FIG. FIG. 11 is an exploded view of the discharge valve device of the conventional compressor, and FIG. 11 is a cross-sectional view of the head of the conventional hermetic compressor.

  7, 8, 9, 10, and 11, the sealed container 1 includes a discharge pipe 2 and a suction pipe 3 connected to a cooling system (not shown), and stores oil 4 at the bottom. An electric element 7 including a stator 5 and a rotor 6 and a compression mechanism 8 driven by the electric element 7 are accommodated, and the inside is filled with a refrigerant 9.

  Next, the main configuration of the compression mechanism 8 will be described.

  The cylinder block 10 includes a substantially cylindrical compression chamber 11 and a bearing portion 12. The valve plate 13 includes a discharge valve device 14 on the side opposite to the cylinder block 10 and closes the compression chamber 11. The head 15 covers the valve plate 13. One end of the suction muffler 16 opens into the sealed container 1, and the other end communicates with the compression chamber 11. The crankshaft 17 has a main shaft portion 18 and an eccentric portion 19, and is supported by the bearing portion 12 of the cylinder block 10 and the rotor 6 is press-fitted and fixed. The piston 20 is inserted into the compression chamber 11 so as to be slidable back and forth, and is connected to the eccentric portion 19 by a connecting rod 21.

  Next, the discharge valve device 14 provided in the compression mechanism 8 will be described.

  The valve plate 13 has a recess 22 on the side opposite to the cylinder block 10. The recess 22 is provided with a discharge hole 23 communicating with the compression chamber 11 and a valve seat portion 24 formed so as to surround the discharge hole 23. 24 and a pedestal 25 formed on substantially the same plane. A discharge lead 26, a spring lead 27, and a stopper 28 are sequentially fixed to the pedestal portion 25 by rivets 29, and are formed in the outlet hole 30 above the discharge hole 23 of the valve plate 113 in the gravity direction.

  The discharge lead 26 is made of a tongue-shaped leaf spring material, and includes a discharge lead holding portion 31 fixed to the pedestal portion 25 and an opening / closing portion 32 that opens and closes the valve seat portion 24.

  The spring lead 27 is made of a tongue-shaped leaf spring material, includes a spring lead holding portion 33 fixed to the pedestal portion 25 and a movable portion 34, and has a bent portion 35 near the base of the opening / closing portion 32 of the discharge lead 26. is doing.

  The stopper 28 includes a stopper holding portion 36 fixed to the pedestal portion 25 and a restriction portion 37 that restricts the movement of the discharge lead 26, and the restriction portion 37 of the stopper 28 is a plane including the valve seat portion 24 and the pedestal portion 25. On the other hand, it is shaped into a substantially parallel side surface.

  The movable part 34 of the spring lead 27 is adjusted by the bending angle of the bending part 35 so as to form a predetermined gap between the opening / closing part 32 of the discharge lead 26 and the restriction part 37 of the stopper 28. .

  The operation of the hermetic compressor configured as described above will be described below.

  When electricity is supplied to the electric element 7, the rotor 6 rotates and the crankshaft 17 is driven to rotate. At this time, the eccentric rotational movement of the eccentric portion 19 is transmitted to the piston 20 via the connecting rod 21, so that the piston 20 reciprocates in the compression chamber 11.

  As the piston 20 reciprocates, the refrigerant 9 in the sealed container 1 is sucked into the compression chamber 11 from the suction muffler 16, and the low-pressure refrigerant 9 passes through the suction pipe 3 from the cooling system (not shown). 1 flows in. The refrigerant 9 sucked into the compression chamber 11 is compressed and discharged into the head 15 through the discharge valve device 14 of the valve plate 13. Further, the high-pressure gas discharged into the head 15 passes through the outlet hole 30 and is discharged from the discharge pipe 2 to a cooling system (not shown).

At this time, the space height at the free ends of the discharge lead 26 and the spring lead 27 is secured to prevent pressure loss when the discharge lead 26 is opened, and the discharge lead is adjusted by adjusting the space height of the spring lead 27. The amount of opening 26 can be regulated to improve efficiency, and the noise can be reduced by suppressing the noise generated when the discharge lead 26 and the spring lead 27 collide because the spring lead 27 has a bending angle. can do.
JP 2002-195160 A

  However, in the above conventional configuration, when the hermetic compressor is started, when the refrigerant 9 is discharged into the head 15 via the discharge valve device 14, a small amount of oil 4 circulating in the cooling system (not shown) is also present. If the oil 4 is discharged into the head 15 together with the refrigerant 9 and the operation is continued, the oil 4 accumulates on the lower side in the direction of gravity in the head 15 due to the influence of gravity, and the refrigerant 9 blows out to the reservoir of the oil 4 (in FIG. 11). Arrow I), the flow of the refrigerant 9 along the wall in the head 15 (arrow J in FIG. 11) causes the oil 4 to intermittently scatter and adhere to the vicinity of the discharge lead 26, and the behavior of the discharge lead 26 changes. The phenomenon that the input fluctuates may occur.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a hermetic compressor with stable input.

  In order to solve the above conventional problems, the hermetic compressor according to the present invention has a discharge space divided into approximately two chambers by a wall projecting upward, and a valve plate is formed in one of the two chambers. Since the outlet hole is opened and the blowout port that blows out the refrigerant gas in the outer circumferential direction of the other chamber is formed in the concave portion, the oil is unlikely to collect in the lower side of the gravitational direction in the head, so that it is difficult to scatter around the discharge lead. Has an effect.

  Since the hermetic compressor of the present invention can stabilize the behavior of the discharge lead and suppress input fluctuations, a hermetic compressor with stable input can be provided.

  The invention according to claim 1 accommodates a compression mechanism and oil in a sealed container, and the compression mechanism seals the opening end of the cylinder and includes a discharge valve device on the non-cylinder side; and The discharge valve device has a cylinder head that accommodates the discharge valve device and forms a discharge space. The discharge valve device has a discharge hole that communicates with the cylinder in a recess provided on the opposite side of the valve plate, and the discharge hole. A discharge lead that opens and closes the stopper, and a stopper that restricts the movement of the discharge lead. The discharge space is divided into approximately two chambers by a wall projecting upward, and the valve plate is placed in one of the two chambers. The outlet hole formed in the opening is formed in the concave portion with a blowout port for blowing out refrigerant gas in the outer circumferential direction of the other chamber, and the refrigerant gas is blown out in the outer circumferential direction of the other chamber. Te, the other in the direction of gravity lower oil reservoir hardly room for the oil is less likely to scatter into the discharge reed, the behavior of the discharge reed can be suppressed input fluctuation is stabilized.

  According to a second aspect of the present invention, in the first aspect of the present invention, the blowing direction of the blowout port is a direction other than the communication path that connects the one room and the other room. Since the oil can easily flow into the communication path, the oil can be discharged, so that the behavior of the discharge lead can be stabilized and the input fluctuation can be suppressed.

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein the outlet is formed by widening the outer peripheral side of the other chamber side of the recess, and the refrigerant gas rotates in the other chamber. In order to form a flow, in addition to the effect of the invention according to claim 1 or 2, it is difficult for oil to collect on the lower side in the gravity direction of the other room, and it is difficult for oil to scatter in the vicinity of the discharge lead. It is possible to stabilize the lead behavior and suppress the input fluctuation.

  The invention according to claim 4 is the invention according to claim 1 or 2, wherein the outlet is formed by providing an inclination on the lower wall surface on the other room side of the recess. Since oil is efficiently discharged from the vicinity of the discharge lead and the refrigerant gas forms a rotating flow in the other chamber, a large amount of oil is temporarily discharged in addition to the effect of the invention according to claim 1 or 2. Even in this case, the behavior of the discharge lead is stabilized and the input fluctuation can be suppressed.

  The invention according to claim 5 is the one according to claim 1, further comprising oil supply means inside the cylinder, and when oil is forced to be supplied by the oil supply means or when the oil is supplied from the oil supply means at the start-up. Even when the amount of circulating oil varies depending on the operating conditions, the oil does not scatter in the vicinity of the discharge lead. Therefore, in addition to the effect of the invention according to claim 1, it is not affected by variation in the amount of circulating oil. Input fluctuation can be suppressed, and sufficient oil can be supplied between the cylinder and the piston to reduce sliding loss and refrigerant gas leakage.

  Embodiments of a compressor according to the present invention will be described below with reference to the drawings.

(Embodiment 1)
1 is a cross-sectional view of a hermetic compressor according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view of a discharge space in the same embodiment, and FIG. 3 is an exploded view of a discharge valve device and a discharge space in the same embodiment. It is.

  1, 2, and 3, the sealed container 101 is connected to a cooling system (not shown), stores oil 102 at the bottom, and is driven by an electric element 105 including a stator 103 and a rotor 104. And the inside is filled with the refrigerant gas 107. The refrigerant gas 107 is preferably a refrigerant gas 107 other than a specific chlorofluorocarbon target corresponding to environmental problems in recent years, such as R134a or R600a which is a natural refrigerant.

  Next, a main configuration of the compression mechanism 106 will be described.

  The cylinder block 110 includes a substantially cylindrical cylinder 111 and a bearing portion 112. The valve plate 113 includes a discharge valve device 114 on the side opposite to the cylinder 111 and closes the cylinder 111. The cylinder head 115 accommodates the discharge valve device 114 and covers the valve plate 113 to form a discharge space 116. The crankshaft 117 has a main shaft portion 118 and an eccentric portion 119, and is supported by the bearing portion 112 of the cylinder block 110 and is press-fitted and fixed to the rotor 104. The piston 120 is inserted into the cylinder 111 so as to be slidable back and forth, and is connected to the eccentric portion 119 by a connecting rod 121.

  One end of the suction muffler 130 opens into the sealed container 101, the other end communicates with the inside of the cylinder 111, and an oil supply means 131 to the inside of the cylinder 111 is provided on the side surface on the electric element 105 side. The oil supply means 131 is formed by making a small hole in the suction muffler 130 so as to communicate the inside of the sealed container 101 and the suction muffler 130.

  The discharge valve device 114 is formed with a discharge hole 141 communicating with the inside of the cylinder 111 in a recess 140 provided on the side opposite to the cylinder 111 of the valve plate 113, and a discharge lead made of a tongue-shaped leaf spring material that opens and closes the discharge hole 141. 142, a spring lead 143 that regulates the spring characteristics of the discharge lead 142, and a stopper 144 that regulates the movement of the discharge lead 142 are sequentially stacked.

  The discharge lead 142 includes a discharge lead holding portion 145 fixed to the concave portion 140 and an opening / closing portion 146 that opens and closes the discharge hole 141. The stopper 144 is press-fitted into the recess 140 and fixed. Sintered metal or the like is used as the material of the valve plate 113, and the recess 140 is integrally formed using a mold.

  The discharge space 116 is divided into approximately two rooms by a wall 150 projecting upward, and an outlet hole 152 formed in the valve plate 113 is opened in one of the two rooms 151.

  In the other chamber 153, a lower space 158 located below the discharge hole 141 in the direction of gravity is formed, and the refrigerant gas 107 is blown out toward the outer periphery 154 of the other chamber 153 (arrow A in FIG. 2). The blowout port 155 is integrally formed with the recess 140 in a mold by widening the outer periphery 157 side of the recess 140 on the other chamber 153 side.

  Further, the outlet 155 opens in the direction in which the refrigerant gas 107 easily flows when the discharge lead 142 is opened and the refrigerant gas 107 is discharged, that is, in the direction from the discharge lead holding portion 145 to the opening / closing portion 146 and from the center of the discharge hole 141. Since it is formed in the direction toward the outside in the radial direction, it does not blow in the direction of the communication path 156 that connects the one room 151 and the other room 153.

  The operation and action of the hermetic compressor configured as described above will be described below.

  When electricity is supplied to the electric element 105, the rotor 104 rotates and the crankshaft 117 is driven to rotate. At this time, the eccentric rotational motion of the eccentric portion 119 is transmitted to the piston 120 via the connecting rod 121, so that the piston 120 reciprocates in the cylinder 111.

  As the piston 120 reciprocates, the refrigerant gas 107 in the sealed container 101 is sucked into the cylinder 111 from the suction muffler 130, and the low-pressure refrigerant gas 107 flows into the sealed container 101 from a cooling system (not shown). . The refrigerant gas 107 sucked into the cylinder 111 is compressed and discharged into the discharge space 116 through the discharge valve device 114 of the valve plate 113. Further, the high-pressure gas discharged into the discharge space 116 is discharged to a cooling system (not shown) through the outlet hole 152.

  At that time, the mist-like oil 102 and the oil 102 attached around the suction muffler 130 exist together with the refrigerant gas 107 in the sealed container 101. The oil 102 is sucked together with the refrigerant gas 107 from the suction muffler 130, and this oil 102 is also compressed and discharged, so that the oil 102 is interposed in the discharge space 116 between the discharge lead 142 and the stopper 144. Yes.

  As the operation continues, the oil 102 is separated from the refrigerant gas 107 due to the influence of gravity, and tends to accumulate in a lower space 158 located on the lower side in the gravity direction of the other chamber 153. However, in the present embodiment, the refrigerant gas 107 is blown out from the outlet 155 toward the outer periphery 154 of the other chamber 153, whereby the oil 102 is caught in the flow of the refrigerant gas and discharged to the outlet hole 152, The oil 102 is less likely to accumulate in the lower space 158. Therefore, the oil 102 is less likely to be scattered near the discharge lead 142, and the change in behavior caused by intermittently adhering to the discharge lead 142 is eliminated, so that the input fluctuation can be suppressed.

  Furthermore, the direction in which the refrigerant gas 107 blows out is a direction other than the communication path 156 that connects the one room 151 and the other room 153, and disturbs the flow of the refrigerant gas 107 flowing from the other room 153 to the one room 151. Therefore, the oil 102 easily flows to the communication path 156 together with the refrigerant gas 107, and the oil 102 can be discharged. Therefore, the behavior of the discharge lead 142 is stabilized, and the input fluctuation can be suppressed.

  Further, the outlet 155 widens the outer periphery 157 side of the recess 140 on the other chamber 153 side, so that the refrigerant gas 107 forms a rotating flow (arrow B in FIG. 2) in the other chamber 153, and the oil 102 is discharged. Since it is efficiently transported along the outer periphery 154 and the wall 150 of the other room 153 to the one room 151 via the communication path 156 (arrow C in FIG. 2), it becomes easy to discharge from the outlet hole 152 (in FIG. 2). Arrow D), the accumulation of oil 102 can be eliminated, the oil 102 is less likely to scatter around the discharge lead 142, the behavior of the discharge lead 142 is stabilized, and input fluctuations can be suppressed.

  Furthermore, providing the oil supply means 131 to the inside of the cylinder 111 has an effect that the oil 102 can be stably supplied to the sliding portion between the cylinder 111 and the piston 120. On the other hand, even when the oil 102 is forcibly added by the oil supply means 131 or when the circulating amount of the oil 102 fluctuates depending on the operating conditions, such as when a large amount of oil 102 enters from the oil supply means 131 when the hermetic compressor is started, 102 does not scatter in the vicinity of the discharge lead 142, so that fluctuations in input can be suppressed without being affected by fluctuations in the circulation amount of the oil 102, and sufficient oil 102 is supplied between the cylinder 111 and the piston 120 for sliding. Loss and leakage of the refrigerant gas 107 can be reduced.

(Embodiment 2)
4 is a cross-sectional view of a hermetic compressor according to the second embodiment of the present invention, FIG. 5 is a cross-sectional view of the discharge space in the same embodiment, and FIG. 6 is an exploded view of the discharge valve device and the discharge space in the same embodiment. It is.

  4, 5, and 6, the sealed container 201 is connected to a cooling system (not shown), stores oil 202 at the bottom, and is driven by an electric element 205 including a stator 203 and a rotor 204. The inside is filled with a refrigerant gas 207. The refrigerant gas 207 is preferably a refrigerant gas 207 other than the specific chlorofluorocarbon target corresponding to environmental problems in recent years, such as R134a and R600a which is a natural refrigerant.

  Next, a main configuration of the compression mechanism 206 will be described.

  The cylinder block 210 includes a substantially cylindrical cylinder 211 and a bearing portion 212. The valve plate 213 includes a discharge valve device 214 on the side opposite to the cylinder 211 and closes the cylinder 211. The cylinder head 215 accommodates the discharge valve device 214 and covers the valve plate 213 to form a discharge space 216. The crankshaft 217 has a main shaft portion 218 and an eccentric portion 219, is supported by a bearing portion 212 of the cylinder block 210 and is press-fitted and fixed to the rotor 204. The piston 220 is inserted into the cylinder 211 so as to be slidable back and forth, and is connected to the eccentric portion 219 by a connecting rod 221.

  One end of the suction muffler 230 opens into the sealed container 201, the other end communicates with the cylinder 211, and an oil supply means 231 to the inside of the cylinder 211 is provided on the side surface on the electric element 205 side. The oil supply means 231 is formed by making a small hole in the suction muffler 230 so as to communicate the inside of the sealed container 201 and the suction muffler 230.

  The discharge valve device 214 includes a discharge lead made of a tongue-shaped leaf spring material that forms a discharge hole 241 communicating with the inside of the cylinder 211 in a recess 240 provided on the side opposite to the cylinder 211 of the valve plate 213 and opens and closes the discharge hole 241. 242, a spring lead 243 that regulates the spring characteristics of the discharge lead 242, and a stopper 244 that regulates the movement of the discharge lead 242 are sequentially stacked.

  The discharge lead 242 includes a discharge lead holding portion 245 fixed to the recess 240 and an opening / closing portion 246 that opens and closes the discharge hole 241. The stopper 244 is press-fitted into the recess 240 and fixed. Sintered metal or the like is used as the material of the valve plate 213, and the recess 240 is integrally formed using a mold.

  The discharge space 216 is divided into approximately two rooms by a wall 250 projecting upward, and an outlet hole 252 formed in the valve plate 213 is opened in one of the two rooms.

  In the other chamber 253, a lower space 258 located below the ejection hole 241 in the direction of gravity is formed. And the blower outlet 255 which blows the refrigerant gas 207 in the direction of the outer periphery 254 of the other chamber 253 (arrow E in FIG. 5) is formed by widening the outer periphery 257 on the other chamber 253 side of the recess 240. The lower wall surface 259 of 240 is inclined and formed integrally with a mold.

  Further, the blower outlet 255 opens in the direction in which the refrigerant gas 207 easily flows when the discharge lead 242 is opened and the refrigerant gas 207 is discharged, that is, the direction from the discharge lead holding part 245 toward the opening / closing part 246 and Since it is formed with an inclination in the direction toward the outside in the radial direction, it does not blow out in the direction of the communication path 256 that connects the one room 251 and the other room 253.

  The operation and action of the hermetic compressor configured as described above will be described below.

  When electricity is supplied to the electric element 205, the rotor 204 rotates and the crankshaft 217 is driven to rotate. At this time, the eccentric rotational motion of the eccentric portion 219 is transmitted to the piston 220 via the connecting rod 221, so that the piston 220 reciprocates in the cylinder 211.

  As the piston 220 reciprocates, the refrigerant gas 207 in the sealed container 201 is sucked into the cylinder 211 from the suction muffler 230 and the low-pressure refrigerant gas 207 flows into the sealed container 201 from a cooling system (not shown). . The refrigerant gas 207 sucked into the cylinder 211 is compressed and discharged into the discharge space 216 through the discharge valve device 214 of the valve plate 213. Further, the high-pressure gas discharged into the discharge space 216 is discharged to a cooling system (not shown) through the outlet hole 252.

  At that time, the mist-like oil 202 and the oil 202 attached around the suction muffler 230 exist together with the refrigerant gas 207 in the sealed container 201. The oil 202 is sucked together with the refrigerant gas 207 from the suction muffler 230, and the oil 202 is also compressed and discharged. Therefore, the oil 202 is interposed in the discharge space 216 between the discharge lead 242 and the stopper 244. Yes.

  As the operation continues, the oil 202 is separated from the refrigerant gas 207 by the influence of gravity, and tends to accumulate in the lower space 258 located on the lower side in the gravity direction of the other chamber 253. However, in the present embodiment, when the refrigerant gas 207 is blown out from the outlet 255 toward the outer periphery 254 of the other chamber 253, the oil 202 is caught in the flow of the refrigerant gas and discharged to the outlet hole 252. The oil 202 is less likely to accumulate in the lower space 258. Therefore, the oil 202 is less likely to be scattered near the discharge lead 242, and the change in behavior caused by intermittently adhering to the discharge lead 242 is eliminated, so that the input fluctuation can be suppressed.

  Further, the direction in which the refrigerant gas 207 is blown out is a direction other than the communication path 256 that connects the one room 251 and the other room 253, and the flow of the refrigerant gas 207 flowing from the other room 253 to the one room 251 is disturbed. Therefore, the oil 202 easily flows into the communication path 256 together with the refrigerant gas 207, and the oil 202 can be discharged. Therefore, the behavior of the discharge lead 242 is stabilized, and the input fluctuation can be suppressed.

  Further, since the outlet 255 is formed with an inclination on the lower wall surface 259 on the other chamber 253 side of the recess 240, the oil 202 is efficiently discharged from the vicinity of the discharge lead 242 by the flow of gravity and the refrigerant gas 207, Further, the refrigerant gas 207 forms a rotating flow in the other chamber 253. The rotational flow of the refrigerant gas 207 is directed downward in the direction of gravity (arrow E in FIG. 5) on the valve plate 213 side from the outlet 255, and upward (arrow F in FIG. 5) on the cylinder head 215 side (front side in FIG. 5). ) And flows into the communication path 256 (arrow G in FIG. 5). The rotation flow makes it easy to carry the oil 202 to one of the chambers 251 and discharge it from the outlet hole 252 (arrow H in FIG. 5), so even if a large amount of oil 202 is temporarily discharged, the discharge lead 242 The behavior is stable and input fluctuation can be suppressed.

  As described above, the hermetic compressor according to the present invention can prevent intermittent scattering and adhesion of oil to the vicinity of the discharge lead, stabilize the behavior of the discharge lead, and suppress input fluctuations. It can also be used for hermetic compressors such as vending machines.

Sectional drawing of the hermetic compressor in Embodiment 1 of this invention Sectional drawing of the discharge space in the same embodiment Exploded view of discharge valve device and discharge space in the same embodiment Sectional drawing of the hermetic compressor in Embodiment 2. Sectional drawing of the discharge space in the same embodiment Exploded view of discharge valve device and discharge space in the same embodiment Cross section of a conventional hermetic compressor Plan view of a conventional hermetic compressor Side sectional view of a discharge valve device of a conventional hermetic compressor Exploded view of discharge valve device of conventional hermetic compressor Sectional view inside the head of a conventional hermetic compressor

Explanation of symbols

101, 201 Airtight container 102, 202 Oil 106, 206 Compression mechanism 107, 207 Refrigerant gas 111, 211 Cylinder 113, 213 Valve plate 114, 214 Discharge valve device 115, 215 Cylinder head 116, 216 Discharge space 131, 231 Oil supply means 140 , 240 Recess 141, 241 Discharge hole 142, 242 Discharge lead 144, 244 Stopper 150, 250 Wall 151, 251 One room 152, 252 Outlet hole 153, 253 Other room 154, 254 Outer periphery 155, 255 Outlet Mouth 156, 256 Communication path 157, 257 Outer periphery of recess 259 Lower wall surface

Claims (5)

A compression mechanism and oil are accommodated in an airtight container. The compression mechanism seals the opening end of the cylinder and includes a discharge valve device on the side opposite to the cylinder, and accommodates the discharge valve device and discharge space. The discharge valve device includes a discharge hole communicating with the cylinder, a discharge lead that opens and closes the discharge hole, and a discharge lead that is provided in a recess provided on the side opposite to the cylinder of the valve plate. A stopper for restricting the movement of the lead is provided, and the discharge space is divided into approximately two chambers by a wall projecting upward, and an outlet hole formed in the valve plate is opened in one of the two chambers. The hermetic compressor in which the outlet for blowing the refrigerant gas in the outer peripheral direction of the other chamber is formed in the recess. The hermetic compressor according to claim 1, wherein a blow-out direction of the blow-out port is a direction other than a communication path that connects one room and the other room. The hermetic compressor according to claim 1 or 2, wherein the outlet is formed by widening the outer peripheral side of the other chamber side of the recess. The hermetic compressor according to claim 1 or 2, wherein the outlet is formed by providing an inclination on a lower wall surface on the other room side of the recess. The hermetic compressor according to claim 1, further comprising a means for supplying oil into the cylinder.

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