WO2015194181A1 - 冷媒圧縮機およびそれを用いた冷凍装置 - Google Patents
冷媒圧縮機およびそれを用いた冷凍装置 Download PDFInfo
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- WO2015194181A1 WO2015194181A1 PCT/JP2015/003052 JP2015003052W WO2015194181A1 WO 2015194181 A1 WO2015194181 A1 WO 2015194181A1 JP 2015003052 W JP2015003052 W JP 2015003052W WO 2015194181 A1 WO2015194181 A1 WO 2015194181A1
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- Prior art keywords
- valve
- suction
- synthetic resin
- valve plate
- opening
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
- F04B39/1066—Valve plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
- F04B39/0223—Lubrication characterised by the compressor type
- F04B39/023—Hermetic compressors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
- F04B39/1073—Adaptations or arrangements of distribution members the members being reed valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/123—Fluid connections
Definitions
- the present invention relates to improvement in efficiency and noise reduction of a refrigerant compressor mainly used in a home refrigerator.
- a valve plate provided with a suction valve seat disposed so as to surround the suction hole and a discharge valve seat provided so as to surround the suction hole is formed of a sintered metal material.
- FIG. 22 is a cross-sectional view of the conventional refrigerant compressor described in Patent Document 1
- FIG. 23 is an exploded perspective view around the valve plate of the conventional refrigerant compressor.
- the refrigerant compressor stores the refrigerating machine oil 2 at the bottom in the hermetic container 1, is filled with the working fluid 3, and further stores the compressor main body 4.
- the electric element 6 and the compression element 9 are elastically supported in the sealed container 1 by the suspension spring 5.
- the electric element 6 includes a stator 7 and a rotor 8.
- the compression element 9 includes a crankshaft 12 having an eccentric shaft 10 and a main shaft 11, a cylinder 14 that forms a compression chamber 13, a bearing portion 23 that supports the main shaft 11, and a piston 16 that reciprocates inside the cylinder 14. ing. Also, a valve plate 17 that seals the end face of the cylinder 14, a suction valve 20 that opens and closes a suction hole 18 and a discharge hole 19 that are provided in the valve plate 17 and communicate with the inside and outside of the compression chamber 13, a discharge valve 21, A connecting portion (not shown) for connecting the eccentric shaft 10 and the piston 16 is provided.
- a cylinder head 52 is disposed so as to cover the valve plate 17 and cover it, and a head space 56 is formed by the valve plate 17 and the cylinder head 52.
- the main shaft 11 of the crankshaft 12 is rotatably supported by the bearing portion 23, and the rotor 8 is fixed.
- a current is passed through the stator 7 to generate a magnetic field, and the rotor 8 fixed to the main shaft 11 is rotated, whereby the crankshaft 12 rotates and a connecting portion (not shown) attached to the eccentric shaft 10. ),
- the piston 16 reciprocates in the cylinder 14 and repeats a series of cycles of suction, compression, and discharge strokes.
- the discharge valve 21 starts to open due to the pressure difference. Then, the working fluid 3 inside the compression chamber 13 passes through the discharge hole 19 and flows out to the head space 56. Thereafter, the working fluid 3 is discharged from the head space 56 via a discharge muffler (not shown) to the high pressure side (not shown) of the refrigeration cycle.
- valve plate 17 is provided with recesses for disposing the suction hole 18, the discharge hole 19, and the discharge valve 21, so that it has a complicated shape and is made of a sintered metal material for improving productivity. Yes.
- valve plate 17 is made of a sintered metal material, pores unique to the sintered metal material are scattered. Therefore, the refrigerating machine oil 2 in the compressor is stored on the surface of the valve plate 17 and is also impregnated inside. The impregnated refrigerating machine oil 2 oozes out to the surface due to pressure fluctuation or the like. Such refrigerating machine oil 2 is interposed in the gap between the valve plate 17 and the suction valve 20 or the discharge valve 21.
- valve plate 17, the suction valve 20, and the valve plate 17 and the discharge valve 21 have a problem that a striking sound is generated when the valve plate 17 is closed, and noise is generated when the striking sound leaks outside the sealed container. It was.
- the inverter driving of the electric element 6 is used to operate at a low speed, and the noise of the electric element 6 is reduced. Therefore, the valve plate 17, the intake valve 20, and the valve plate 17 The striking sound of the discharge valve 21 became prominent, further causing noise.
- the present invention suppresses the delay in opening of the intake valve 20 and the discharge valve 21, thereby reducing the pressure loss during the intake stroke and the discharge stroke and improving the compressor efficiency. Further, the noise is reduced by reducing the impact sound when the valve plate 17, the suction valve 20, and the valve plate 17 and the discharge valve 21 are closed.
- a refrigerant compressor includes a cylinder that houses a reciprocating piston in a sealed container, a valve plate that is disposed at an opening end of the cylinder and has a suction valve seat provided to surround the suction hole, A suction valve for opening and closing the hole.
- the suction valve includes an opening / closing part and an arm part that operates when the opening / closing part opens and closes, and has a synthetic resin film at least in a region of the valve plate that contacts the arm part of the suction valve.
- the impact sound can be reduced and the noise can be reduced.
- the refrigerant compressor of the present invention includes a cylinder that houses a reciprocating piston in a sealed container, and a valve plate that has a discharge valve seat that is disposed at the opening end of the cylinder so as to surround the discharge hole. And a discharge valve for opening and closing the discharge hole.
- the discharge valve includes an opening / closing portion and an arm portion that operates when the opening / closing portion opens and closes, and has a synthetic resin film at least in a region of the valve plate that contacts the arm portion of the discharge valve.
- the impact sound can be reduced and the noise can be reduced.
- FIG. 1 is a cross-sectional view of the refrigerant compressor according to the first embodiment of the present invention.
- FIG. 2 is an exploded perspective view around the valve plate of the refrigerant compressor according to the first embodiment of the present invention.
- FIG. 3 is a cross-sectional view of a main part of the refrigerant compressor according to the first embodiment of the present invention.
- FIG. 4 is a plan view of the suction valve of the refrigerant compressor according to the first embodiment of the present invention.
- FIG. 5 is a plan view of the discharge valve of the refrigerant compressor according to the first embodiment of the present invention.
- FIG. 6 is a plan view on the suction side of the valve plate of the refrigerant compressor according to the first embodiment of the present invention.
- FIG. 7 is a cross-sectional view of the synthetic resin film of the refrigerant compressor according to the first embodiment of the present invention.
- FIG. 8 is a characteristic diagram showing a collision impact value associated with opening / closing of the valve of the refrigerant compressor according to the first embodiment of the present invention.
- FIG. 9 is a cross-sectional view of a main part of the refrigerant compressor according to the second embodiment of the present invention.
- FIG. 10 is a plan view of the discharge side of the valve plate of the refrigerant compressor according to the second embodiment of the present invention.
- FIG. 11 is a schematic diagram showing the configuration of the refrigeration apparatus in the third embodiment of the present invention.
- FIG. 12 is a cross-sectional view of a refrigerant compressor in the fourth embodiment of the present invention.
- FIG. 13 is an exploded perspective view around the valve plate of the refrigerant compressor according to the fourth embodiment of the present invention.
- FIG. 14 is a cross-sectional view of the main part of the valve plate of the refrigerant compressor according to the fourth embodiment of the present invention.
- FIG. 15 is a plan view of the valve plate of the refrigerant compressor according to the fourth embodiment of the present invention.
- FIG. 16 is sectional drawing which shows the surface treatment film
- FIG. 17 is principal part sectional drawing of the valve plate of the refrigerant compressor in the 5th Embodiment of this invention.
- FIG. 18 is a plan view of a valve plate of a refrigerant compressor according to the fifth embodiment of the present invention.
- FIG. 19 is a cross-sectional view of the main part of the valve plate of the refrigerant compressor according to the sixth embodiment of the present invention.
- FIG. 20 is a plan view of the valve plate of the refrigerant compressor according to the sixth embodiment of the present invention.
- FIG. 21A is a cross-sectional view of main parts of a valve plate of a refrigerant compressor according to a seventh embodiment of the present invention.
- FIG. 21B is a cross-sectional view of the valve plate of the refrigerant compressor in the seventh embodiment of the present invention.
- FIG. 22 is a cross-sectional view of a conventional refrigerant compressor.
- FIG. 23 is an exploded perspective view around a valve plate of a conventional refrigerant compressor.
- FIG. 1 is a cross-sectional view of the refrigerant compressor according to the first embodiment of the present invention.
- FIG. 2 is an exploded perspective view around the valve plate of the refrigerant compressor according to the first embodiment of the present invention.
- FIG. 3 is a cross-sectional view of a main part of the refrigerant compressor according to the first embodiment of the present invention.
- FIG. 4 is a plan view of the suction valve of the refrigerant compressor according to the first embodiment of the present invention.
- FIG. 5 is a plan view of the discharge valve of the refrigerant compressor according to the first embodiment of the present invention.
- FIG. 6 is a plan view on the suction side of the valve plate of the refrigerant compressor according to the first embodiment of the present invention.
- FIG. 7 is a cross-sectional view of the surface treatment of the refrigerant compressor according to the first embodiment of the present invention.
- the refrigerant compressor according to the first embodiment of the present invention stores, for example, low-viscosity mineral oil as the refrigerating machine oil 102 at the bottom of the hermetic container 101, and as the working fluid 103, for example, global warming.
- a hydrocarbon-based R600a having a low conversion coefficient is enclosed.
- the sealed container 101 is formed by drawing an iron plate, and has one end connected to the closed container 101 and the other end connected to the low-pressure side (not shown) of the refrigeration cycle, and one end Is provided with a discharge pipe 157 that penetrates the sealed container 101 and communicates with a discharge muffler (not shown), and has the other end connected to the high-pressure side (not shown) of the refrigeration cycle.
- a compressor body 104 including a compression element 109 and an electric element 106 is elastically supported and accommodated with respect to the sealed container 101 by a suspension spring 105.
- the compression element 109 includes a crankshaft 112, a block 115, a piston 116, a connecting portion 122, and the like.
- the crankshaft 112 includes an eccentric shaft 110 and a main shaft 111, and a spiral shape provided on the surface of the main shaft 111.
- An oil supply mechanism 151 including a groove or the like is provided.
- the electric element 106 includes a stator 107 screwed to the lower side of the block 115 with bolts (not shown), and a rotor 108 arranged coaxially inside the stator 107 and fixed to the main shaft 111 by shrink fitting. Yes.
- a cylinder 114 that forms the compression chamber 113 and a bearing portion 123 that rotatably supports the main shaft 111 are integrally formed.
- a valve plate 117 having a suction hole 118 and a discharge hole 119 communicating with the inside and outside of the compression chamber 113 formed of a sintered metal material, and a suction valve 120 for opening and closing the suction hole 118,
- a cylinder head 152 serving as a lid of the valve plate 117 is provided.
- the valve plate 117, the intake valve 120 and the cylinder head 152 are all pressed and fixed by the head bolt 153 so as to seal the end face of the cylinder 114, and the suction is provided between the valve plate 117 and the cylinder head 152.
- the muffler 154 is gripped and fixed.
- a suction valve seat 141 is provided around the suction hole 118 of the valve plate 117 so as to surround the suction hole 118, and a discharge valve seat 142 is provided around the discharge hole 119 so as to surround the discharge hole 119. Is provided.
- the suction valve 120 includes an opening / closing part 120a for opening and closing the suction hole 118, and an arm part 120b that operates when the opening / closing part 120a opens and closes.
- a discharge valve 121 that opens and closes the discharge hole 119 is disposed on the surface of the valve plate 117 that is disposed on the cylinder head 152 side.
- the spring lead 130 that elastically supports the discharge valve 121, the discharge valve 121, and the spring lead 130 are provided.
- a discharge valve device including a valve stop 131 to be fixed is provided.
- a head space 156 is formed by the valve plate 117 and the cylinder head 152.
- the discharge valve 121 includes an opening / closing part 121a that opens and closes the discharge hole 119, and an arm part 121b that operates when the opening / closing part 121a opens and closes.
- the refrigerant compressor causes a current to flow through the stator 107 to generate a magnetic field, and rotates the rotor 108 fixed to the main shaft 111, whereby the crankshaft 112 rotates and a connecting portion that is rotatably attached to the eccentric shaft 110.
- the piston 116 reciprocates in the cylinder 114 via 122. As the piston 116 reciprocates, the working fluid 103 is sucked into the compression chamber 113 via the suction muffler 154, and after being compressed, passes through the discharge hole 119 and the head space 156, and then a refrigeration cycle (not shown). ).
- the piston 116 operates in a direction in which the volume of the compression chamber 113 increases, the working fluid 103 in the compression chamber 113 expands, and the pressure in the compression chamber 113 falls below the pressure in the suction muffler 154. Due to the difference between the pressure in the chamber 113 and the pressure in the suction muffler 154, the suction valve 120 starts to open. Then, the arm portion 120b of the suction valve 120 is operated, and the low-temperature working fluid 103 returned from the refrigeration cycle (not shown) is once released from the suction pipe 150 into the sealed container 101, and then the suction muffler 154 is opened. Then, it flows into the compression chamber 113.
- the pressure of the working fluid 103 in the compression chamber 113 rises, becomes higher than the pressure in the head space 156 formed by the valve plate 117 and the cylinder head 152, and the force generated by the pressure difference is
- the discharge hole 119 opens.
- the arm part 121 b of the discharge valve 121 operates, and the working fluid 103 inside the compression chamber 113 passes through the discharge hole 119 and flows out to the head space 156.
- the working fluid 103 is discharged from the head space 156 through the discharge muffler (not shown) to the high pressure side (not shown) of the refrigeration cycle from the discharge pipe 157.
- the synthetic resin film 160 is formed at least in a region of the valve plate 117 that contacts the arm portion 121b of the suction valve 120.
- the synthetic resin film 160 contains a fluororesin that is a solid lubricant 162 in a substantially uniform manner with a synthetic resin made of fluororubber as a binder 161.
- the synthetic resin film 160 having such a structure is formed by the following method.
- preheating is performed to raise the valve plate 117 to a predetermined temperature.
- the purpose of this is to evaporate the solvent dissolved in the synthetic resin film 160 applied to the region in contact with the arm portion 120b of the suction valve 120 and apply it uniformly.
- the surface treatment agent containing and adjusted to contain the solid lubricant 162 is applied to the region of the valve plate 117 in contact with the arm portion 120b of the suction valve 120 by spraying. Note that a masking jig having an appropriate shape is attached in order to prevent the coating agent from adhering to an unnecessary place during application.
- the buff is preferably a horse hair buff, not a nylon buff containing abrasive grains or a relatively hard steel buff.
- baking is performed at about 150 ° C. to 230 ° C. for about 30 minutes to 2 hours to evaporate all of the diluent in the coating agent, and the synthetic resin film 160 is completely in contact with the arm portion 120b of the suction valve 120. Secure to.
- valve plate 117 is provided with a suction valve seat 141, a discharge valve seat 142, and the like, and thus has a complicated shape. Therefore, the valve plate 117 is molded from a sintered metal material in terms of productivity and cost.
- the refrigerating machine oil 102 in the refrigerant compressor is stored on the surface of the valve plate 117 and impregnated inside.
- the impregnated refrigerating machine oil 102 oozes out to the surface due to pressure fluctuation or the like.
- Such refrigerating machine oil 102 is interposed in the gap between the valve plate 117 and the arm portion 120b of the intake valve 120.
- the refrigerating machine oil 102 interposed in the gap generates an adsorbing force, and sucks the arm portion 120b of the intake valve 120 to the valve plate 117.
- the synthetic resin film 160 is formed at least in the region of the valve plate 117 that contacts the arm portion 120b of the suction valve 120.
- the holes unique to the sintered metal material can be sealed with the synthetic resin film 160. Further, by applying the synthetic resin film 160, oil repellency can be made higher than that of the metal surface.
- the delay in opening of the intake valve 120 due to the adsorption force generated by the refrigerating machine oil 102 interposed in the gap between the valve plate 117 and the arm portion 120b of the intake valve 120 can be suppressed, so that the pressure loss during the intake stroke And the compressor efficiency of the refrigerant compressor can be improved.
- FIG. 8 shows the result of measuring the impact generated by opening and closing the valve with an acceleration pickup.
- A is a result in the refrigerant compressor using the valve plate 117 in which the synthetic resin film 160 of the present invention is formed
- B is a result in the refrigerant compressor using the conventional valve plate 117 in which the synthetic resin film 160 is not formed. .
- the spreading speed of the refrigerating machine oil 102 is changed to the valve plate 117 on which the synthetic resin film 160 is formed and the conventional valve on which the synthetic resin film 160 is not formed. Comparison was made with plate 117.
- the opening delay of the intake valve 120 can be improved by forming the synthetic resin film 160 in the region of the valve plate 117 that contacts the arm portion 120b of the intake valve 120.
- the opening timing of the suction valve 120 is advanced, but the time until the suction valve 120 is closed becomes longer. That is, a closing delay occurs.
- the closing delay occurs, leakage occurs in the compression stroke, and the refrigerating capacity is reduced.
- the delay in opening can be improved without lowering the rigidity of the suction valve 120, so that a refrigerant compressor with improved compressor efficiency can be provided without reducing the life of the suction valve 120.
- the impact force when the valve plate 117 and the suction valve 120 are closed can be reduced by the elastic effect of the synthetic resin film 160 applied to the valve plate 117, so that the impact sound can be reduced and the noise level can be reduced. It is possible to provide a refrigerant compressor that achieves the above.
- the synthetic resin film 160 contains fluororubber as a binder, and the solid lubricant 162 contains a fluororesin.
- the synthetic resin film 160 using fluorine has higher elasticity and higher oil repellency than other synthetic resin films 160.
- utilization to equipment that uses refrigeration oil has been limited due to its high oil repellency.
- the present invention can be used by specifying a portion that does not require ensuring lubricity and sealing performance by refrigerating machine oil.
- the elasticity of the synthetic resin film 160 can be further improved, so that it is possible to provide a refrigerant compressor that can further reduce the impact sound and achieve a reduction in noise.
- oil repellency can be improved, it is possible to provide a refrigerant compressor that can effectively suppress delay in opening and improve compressor efficiency.
- the shearing force when the valve plate 117 and the suction valve 120 are closed is reduced by the lubricating effect of the solid lubricant 162, and applied to the valve plate 117. Since peeling of the synthetic resin film 160 from the base material surface can be suppressed, a refrigerant compressor having high durability over the long term can be provided.
- a synthetic resin made of fluororubber is used as the binder 161.
- it is a thermosetting resin and is oil-resistant, heat-resistant, refrigerant-resistant, and resistant to heat. The same effect can be obtained even when polyamideimide, epoxy resin, or phenol resin, which is excellent in organic agent properties, is used.
- a fluororesin is used as the solid lubricant 162 dispersed in the synthetic resin film 160.
- MoS2 molybdenum disulfide
- PTFE tetrafluoroethylene resin
- C graphite
- antimony trioxide captures air and oxygen that have entered the synthetic resin film 160 by using antimony trioxide (Sb2O3) together.
- Sb2O3 antimony trioxide
- the total film thickness of the synthetic resin film 160 is 1 ⁇ m to 100 ⁇ m. Among them, the most balanced specification is obtained when the film thickness is 20 ⁇ m to 70 ⁇ m. This is because, by using fluororubber as a binder and containing a fluororesin in the solid lubricant, the in-film strength of the synthetic resin film 160 and the adhesion strength with the substrate interface can be maintained even when the film thickness is increased. It is possible to increase the impact sound reduction effect and to suppress wear and peeling of the synthetic resin film 160. Therefore, while ensuring durability, the surface roughness of the synthetic resin film 160 can be reduced, and in addition to ensuring long-term reliability, a refrigerant compressor having excellent productivity can be provided.
- FIG. 9 is a cross-sectional view of a main part of the refrigerant compressor according to the second embodiment of the present invention.
- FIG. 10 is a plan view of the discharge side of the valve plate of the refrigerant compressor according to the second embodiment of the present invention.
- the synthetic resin film 160 is formed at least in a region of the valve plate 117 that contacts the arm portion 121b (see FIG. 5) of the discharge valve 121.
- the synthetic resin film 160 contains a fluororesin that is a solid lubricant 162 in a substantially uniform manner with a synthetic resin made of fluororubber as a binder 161.
- the holes unique to the sintered metal material can be sealed with the synthetic resin film 160. Further, by applying the synthetic resin film 160, oil repellency can be made higher than that of the metal surface.
- the delay in opening the discharge valve 121 due to the adsorption force generated by the refrigerating machine oil 102 interposed in the gap between the valve plate 117 and the arm portion 121b of the discharge valve 121 can be suppressed, so that the pressure loss during the discharge stroke And the compressor efficiency of the refrigerant compressor can be improved.
- FIG. 8 shows the result of measuring the impact generated by opening and closing the valve with an acceleration pickup.
- A is a result in the refrigerant compressor using the valve plate 117 in which the synthetic resin film 160 of the present invention is formed
- B is a result in the refrigerant compressor using the conventional valve plate 117 in which the synthetic resin film 160 is not formed. .
- valve plate formed with the synthetic resin film generates an impact at a faster rotation angle than the conventional valve plate. That is, it is proved that the valve plate formed with the surface treatment opens the discharge valve 121 earlier and suppresses the opening delay.
- the spreading speed of the refrigerating machine oil 102 is changed to the valve plate 117 on which the synthetic resin film 160 is formed and the conventional valve on which the synthetic resin film 160 is not formed. Comparison was made with plate 117.
- the opening delay of the discharge valve 121 can be improved by forming the synthetic resin film 160 in the region of the valve plate 117 that contacts the arm portion 121b of the discharge valve 121.
- the opening timing of the discharge valve 121 is advanced, but on the contrary, the time until the discharge valve 121 is closed becomes longer. That is, a closing delay occurs.
- the closing delay occurs, a reverse flow of the refrigerant occurs in the intake stroke, and the reexpansion loss increases.
- the impact force when the valve plate 117 and the discharge valve 121 are closed can be reduced by the elastic effect of the synthetic resin film 160 applied to the valve plate 117, so that the impact sound can be reduced and the noise level can be reduced. It is possible to provide a refrigerant compressor that achieves the above.
- FIG. 11 is a schematic diagram showing the configuration of the refrigeration apparatus in the third embodiment of the present invention.
- the refrigerant circuit described in the first embodiment or the second embodiment of the present invention is mounted on the refrigerant circuit, and only an outline of the basic configuration of the refrigeration apparatus will be described.
- the refrigeration apparatus includes a heat-insulating box having an opening on one side, a main body 201 having a door structure that opens and closes the opening, and a compartment that divides the inside of the main body 201 into an article storage space 203 and a machine room 205.
- a wall 207 and a refrigerant circuit 209 for cooling the storage space 203 are provided.
- the refrigerant circuit 209 has a configuration in which the refrigerant compressor described in the first embodiment or the second embodiment as the compressor 211, the radiator 213, the decompression device 215, and the heat absorber 217 are connected in a ring shape. Yes.
- the heat absorber 217 is arrange
- the cooling heat of the heat absorber 217 is agitated so as to circulate in the storage space 203 by the blower as indicated by an arrow, and the storage space 203 is cooled.
- the refrigerant compressor in the first embodiment or the second embodiment of the present invention is mounted as the compressor 211 in the refrigeration apparatus described above.
- the compressor 211 forms a synthetic resin film 160 in a region of the valve plate 117 that contacts the arm portion 120b of the intake valve 120 or a region of the valve plate 117 that contacts the arm portion 121b of the discharge valve 121. .
- the opening delay of the intake valve 120 and the discharge valve 121 due to the adsorption force of the refrigerating machine oil 102 is suppressed, and the pressure loss during the intake stroke and the discharge stroke is reduced, thereby improving the compressor efficiency and the intake.
- the impact sound generated when the valve 120 and the discharge valve 121 are closed can be reduced by the elastic effect of the synthetic resin film 160. Therefore, since noise reduction is achieved, power consumption of the refrigeration apparatus can be reduced, energy saving can be realized, and noise reduction can also be realized.
- FIG. 12 is a cross-sectional view of a refrigerant compressor in the fourth embodiment of the present invention.
- FIG. 2 is an exploded perspective view around the valve plate of the refrigerant compressor according to the fourth embodiment of the present invention
- FIG. 12 is a cross-sectional view of the main part of the valve plate of the refrigerant compressor according to the fourth embodiment of the present invention.
- FIG. 13 is a plan view of the valve plate of the refrigerant compressor according to the fourth embodiment of the present invention.
- FIG. 14 is a cross-sectional view showing a surface treatment film of a refrigerant compressor in the fourth embodiment of the present invention.
- low-viscosity mineral oil is stored as the refrigerating machine oil 302 at the bottom of the sealed container 301 and the working fluid 303 is, for example, a global warming potential Low hydrocarbon type R600a and the like are enclosed.
- the sealed container 301 is formed by drawing a steel plate, has one end communicating with the sealed container 301 and the other end connected to the low pressure side (not shown) of the refrigeration cycle, and A discharge pipe 357 having one end penetrating the sealed container 301 and communicating with a discharge muffler (not shown) and the other end connected to a high pressure side (not shown) of the refrigeration cycle is provided.
- a compressor body 304 including a compression element 309 and an electric element 306 is accommodated and elastically supported by the suspension container 305 with respect to the sealed container 301.
- the compression element 309 includes a crankshaft 312, a block 315, a piston 316, a connecting portion 322, and the like.
- the crankshaft 312 includes an eccentric shaft 310 and a main shaft 311, and a spiral shape provided on the surface of the main shaft 311.
- An oil supply mechanism 351 including a groove is provided.
- the electric element 306 includes a stator 307 screwed to the lower side of the block 315 with a bolt (not shown), and a rotor 308 that is coaxially disposed inside the stator 307 and is shrink-fitted and fixed to the main shaft 311. Yes.
- a cylinder 314 that forms the compression chamber 313 and a bearing portion 323 that rotatably supports the main shaft 311 are integrally formed.
- the end face of the cylinder 314 is provided with a valve plate 317 having a suction hole 318 and a discharge hole 319 communicating with the inside and outside of the compression chamber 313, and a suction valve 320 for opening and closing the suction hole 318.
- the cylinder head 352 that seals the valve plate 317 is both pressed and fixed by the head bolt 353 so as to seal the end face of the cylinder 314.
- a suction muffler 354 is gripped and fixed between the valve plate 317 and the cylinder head 352.
- the suction valve 320 is formed of a spring steel material and a stainless steel material, and includes a fixing portion 320a fixed to the valve plate 317, an opening / closing portion 320b for opening / closing the suction hole 318 of the valve plate 317, a fixing portion 320a and an opening / closing portion 320b. It is comprised by the arm part 320c which has connected.
- the valve plate 317 is molded of a sintered metal material, and a discharge valve 321 that opens and closes the discharge hole 319 is disposed on a surface disposed on the cylinder head 352 side, and a spring lead 330 that elastically supports the discharge valve 321.
- a discharge valve device comprising a valve stop 331 for fixing the discharge valve 321 and the spring lead 330 is provided.
- a head space 356 is formed by the valve plate 317 and the cylinder head 352.
- the refrigerant compressor causes a current to flow through the stator 307 to generate a magnetic field, and rotates the rotor 308 fixed to the main shaft 311, thereby rotating the crankshaft 312, and a connecting portion that is rotatably attached to the eccentric shaft 310.
- the piston 316 reciprocates in the cylinder 314 via the 322. As the piston 316 reciprocates, the working fluid 303 is sucked into the compression chamber 313 via the suction muffler 354, and after being compressed, passes through the discharge hole 319 and the head space 356, and then a refrigeration cycle (not shown). ).
- the piston 316 In the suction stroke, the piston 316 operates in a direction in which the volume of the compression chamber 313 increases, the working fluid 303 in the compression chamber 313 expands, and the pressure in the compression chamber 313 falls below the pressure in the suction muffler 354. Due to the difference between the pressure in the chamber 313 and the pressure in the suction muffler 354, the suction valve 320 starts to open.
- the low-temperature working fluid 303 that has returned from the refrigeration cycle is once opened from the suction pipe 350 into the sealed container 301, and then flows into the compression chamber 313 through the suction muffler 354.
- the pressure of the working fluid 303 in the compression chamber 313 increases, becomes higher than the pressure in the head space 356 formed by the valve plate 317 and the cylinder head 352, and the force generated by the pressure difference is
- the discharge hole 319 opens.
- the working fluid 303 inside the compression chamber 313 passes through the discharge hole 319 and flows out to the head space 356.
- the working fluid 303 is discharged from the head space 356 to the high pressure side (not shown) of the refrigeration cycle through the discharge muffler (not shown).
- the synthetic resin 361 is placed in a region facing the arm portion 320c of the suction valve 320 in the valve plate 317 molded from a sintered metal material.
- a surface treatment film 360 is formed.
- the surface treatment film 360 contains molybdenum disulfide particles, which are solid lubricants 362, in a substantially uniform manner with a synthetic resin 361 made of polyamideimide (PAI) as a binder.
- PAI polyamideimide
- the surface treatment film 360 having such a structure is formed by the following method.
- preheating is performed to raise the valve plate 317 to a predetermined temperature. This preheating is performed for the purpose of uniformly coating the surface treatment film 360 applied to the region of the valve plate 317 facing the arm portion 320c by evaporating the solvent dissolved in the surface treatment film 360. is there.
- a surface treatment agent containing and adjusted to contain a solid lubricant 362 is applied to the region of the valve plate 317 facing the arm portion 320c of the suction valve 320 by spraying.
- a masking jig having an appropriate shape is attached in order to prevent the coating agent from adhering to an unnecessary place during application.
- the buff is preferably a horse hair buff rather than a nylon buff containing abrasive grains or a relatively hard steel buff.
- baking is performed at about 180 ° C. to 230 ° C. for about 30 minutes to 2 hours to evaporate all the diluent in the coating agent, and the surface treatment film 360 is completely opposed to the arm portion 320c of the suction valve 320. Secure to.
- the valve plate 317 is provided with a suction valve seat 341, a discharge valve seat 342, and the like, and has a non-uniform thickness and a complicated shape. Therefore, a sintered metal material is used in terms of productivity and cost. Molded. Further, in order to install the discharge valve device including the discharge valve 321, a concave portion 332 is formed on the side opposite to the suction valve seat, and the valve plate 317 has a convex shape on the suction valve 320 side due to processing distortion or the like. (For example, about 10 to 100 ⁇ m).
- the arm portion 320 c of the suction valve 320 comes into contact with the vicinity of the convex vertex of the valve plate 317, and then the opening / closing portion 320 b is moved to the suction hole 318. Because of this, a striking force is generated by the contact of the arm part 320c.
- the arm part 320c of the intake valve 320 may break, leading to poor compression.
- the refrigerant compressor is made of metal in the suction valve 320 by reducing the thickness of the suction valve 320 made of spring steel and the variable speed rotation mode by adopting an inverter drive in response to the recent high efficiency.
- the arm portion 320c of the intake valve 320 breaks down during long-term use, leading to compression failure.
- the surface of the valve plate 317 facing the arm portion 320c of the suction valve 320 is provided with a surface treatment film 360 containing a synthetic resin 361, so that the valve plate 317 is convex toward the suction valve 320 side.
- the arm portion 320c of the suction valve 320 comes into contact with the vicinity of the convex vertex of the valve plate 317, and the arm of the suction valve 320 is generated even if a striking force is generated.
- the striking force is mitigated by the elastic effect of the surface treatment film 360 including the synthetic resin 361 applied to the region of the valve plate 317 facing the portion 320c. Further, breakage of the intake valve 320 caused by the striking force is prevented.
- the surface treatment film 360 including the synthetic resin 361 has a total film thickness of 1 ⁇ m to 50 ⁇ m.
- the total film thickness By setting the total film thickness to 1 ⁇ m or more, the striking force reduction effect due to the elastic effect is exhibited, and the surface treatment film 360 can be formed without unevenness.
- the thickness by setting the thickness to 50 ⁇ m or less, the dimensional tolerance and surface roughness of the surface of the surface treatment film 360 are ensured while ensuring both the in-film strength of the surface treatment film 360 and the adhesion strength with the substrate interface to ensure durability. Can be suppressed. Therefore, it is possible to provide a refrigerant compressor excellent in productivity and a refrigeration apparatus using the same in addition to ensuring long-term reliability by suppressing wear and peeling of the surface treatment film 360.
- the synthetic resin 361 made of polyamideimide is used as the binder of the surface treatment film 360, but it is a thermosetting resin and is oil resistant, heat resistant, refrigerant resistant, and organic resistant. The same effect can be obtained even if an epoxy resin or phenol resin excellent in the above is used.
- the surface treatment film 360 of the present embodiment uses molybdenum disulfide (MoS2) as the solid lubricant 362 dispersed in the surface treatment film 360.
- MoS2 molybdenum disulfide
- PTFE ethylene tetrafluoride resin
- C graphite
- antimony trioxide captures air and oxygen that have entered the surface treatment film 360 by using antimony trioxide (Sb2O3) together.
- Sb2O3 antimony trioxide
- the surface treatment agent is applied only to the necessary portions by using an appropriate masking jig or using a pneumatic syringe type dispenser device (not shown). Therefore, the amount of coating can be reduced, so that productivity is high and a refrigerant compressor can be provided at low cost.
- FIG. 17 is principal part sectional drawing of the valve plate of the refrigerant compressor in the 5th Embodiment of this invention.
- FIG. 18 is a front view of the valve plate of the refrigerant compressor according to the fifth embodiment of the present invention.
- the refrigerant compressor of the present embodiment has a suction valve seat 341 provided so as to surround the suction hole 318 in a region facing the opening / closing portion 320b of the suction valve 320 in the valve plate 317 molded from a sintered metal material.
- a surface treatment film 360 containing a synthetic resin 361 is formed.
- the surface treatment film 360 containing the synthetic resin 361 By applying the surface treatment film 360 containing the synthetic resin 361 to the suction valve seat 341 as in this embodiment, the striking force when the suction valve seat 341 and the suction valve 320 are closed can be reduced. Damage such as cracks and chipping can be suppressed. Therefore, a highly reliable refrigerant compressor and a refrigeration apparatus using the same can be provided.
- the impact force when the suction valve seat 341 and the suction valve 320 are closed can be reduced by the elastic effect of the surface treatment film 360 including the synthetic resin 361 applied to the suction valve seat 341, the impact sound can be reduced, and the noise can be reduced.
- the refrigerant compressor is operated at a low speed by adopting the inverter drive of the electric element 306 in order to cope with high efficiency, and the noise of the electric element 306 is reduced.
- the striking sound with the suction valve 320 tends to be obvious.
- this type of refrigerant compressor is installed in most household refrigerators to be installed indoors, its impact sound is more obvious and noise reduction is essential, so it is effective.
- the density of the sintered metal material is increased and the pores are reduced by repeating the pressurizing and heating processes for molding the sintered metal material a plurality of times. Cost increases and processability deteriorates. Also. When the cast iron material is used, there are a plurality of processing parts, which increases the processing cost.
- the surface treatment film 360 including the synthetic resin 361 is applied to the suction valve seat 341, the holes unique to the sintered metal material scattered in the suction valve seat 341 include the synthetic resin 361.
- the surface treatment film 360 can be sealed. Accordingly, refrigerant leakage between the suction valve seat 341 and the suction valve 320 can be reduced, the sealing performance can be improved, and the back flow of the working fluid 303 during the compression and discharge strokes can be suppressed. And the refrigerant compressor which reduced the fall of refrigerating capacity, improved the compressor efficiency at low cost, and a refrigeration apparatus using the same can be provided.
- the shearing force when the suction valve seat 341 and the suction valve 320 are closed is reduced due to the lubricating effect of the solid lubricant 362.
- Separation of the surface treatment film 360 applied to the suction valve seat 341 from the substrate surface can be suppressed. Therefore, it is possible to provide a refrigerant compressor that can ensure high durability in the long term and a refrigeration apparatus using the same.
- the roughness crest can be removed early and a smooth valve seat surface can be obtained, and the sealing performance of the suction valve seat 341 and the suction valve 320 can be improved. Therefore, it is possible to provide a refrigerant compressor and a refrigeration apparatus using the refrigerant compressor, in which a decrease in the refrigeration capacity due to leakage at an early stage is suppressed and the compressor efficiency is improved.
- the surface treatment film 360 containing the synthetic resin 361 has a total film thickness of 1 ⁇ m to 50 ⁇ m.
- the total film thickness By setting the total film thickness to 1 ⁇ m or more, the effect of improving the sealing property and the effect of reducing the impact force due to the elastic effect are exhibited, and the surface treatment film 360 can be formed without unevenness.
- the thickness by setting the thickness to 50 ⁇ m or less, the dimensional tolerance and surface roughness of the surface of the surface treatment film 360 are ensured while ensuring both the in-film strength of the surface treatment film 360 and the adhesion strength with the substrate interface to ensure durability. Can be suppressed. Therefore, it is possible to provide a refrigerant compressor excellent in productivity and a refrigeration apparatus using the same in addition to ensuring long-term reliability by suppressing wear and peeling of the surface treatment film 360.
- the synthetic resin 361 made of polyamideimide is used as the binder of the surface treatment film 360, but it is a thermosetting resin and is oil resistant, heat resistant, refrigerant resistant, and organic resistant. The same effect can be obtained even if an epoxy resin or a phenol resin excellent in the above is used.
- the surface treatment film 360 of the present embodiment uses molybdenum disulfide (MoS2) as the solid lubricant 362 dispersed in the surface treatment film 360.
- MoS2 molybdenum disulfide
- PTFE ethylene tetrafluoride resin
- C graphite
- antimony trioxide captures air and oxygen that have entered the surface treatment film 360 by using antimony trioxide (Sb2O3) together.
- Sb2O3 antimony trioxide
- the surface treatment agent is applied only to the necessary portions by using an appropriate masking jig or using a pneumatic syringe type dispenser device (not shown). Therefore, the amount of coating can be reduced, so that productivity is high and a refrigerant compressor can be provided at low cost.
- FIG. 19 is a cross-sectional view of the main part of the valve plate of the refrigerant compressor according to the sixth embodiment of the present invention.
- FIG. 20 is a plan view of the valve plate of the refrigerant compressor according to the sixth embodiment of the present invention.
- the refrigerant compressor of the present embodiment has a suction valve 320 in a valve plate 317 molded from a sintered metal material in addition to the configuration of the fourth embodiment of the present invention or the fifth embodiment of the present invention.
- the surface treatment film 360 including the synthetic resin 361 is formed in a region facing the fixed portion 320a.
- the surface treatment film 360 including the synthetic resin 361 in which the vibration generated by the striking force when the suction valve seat 341 and the suction valve 320 are closed is applied to the region corresponding to the fixing portion 320a of the suction valve 320 in the valve plate 317.
- vibration propagating through the valve plate 317 can be attenuated. Therefore, it is possible to provide a refrigerant compressor that can reduce vibration and impact noise and achieve low noise, and a refrigeration apparatus using the same.
- the refrigerant compressor is effective because noise reduction is essential as described above.
- the surface treatment film 360 including the synthetic resin 361 has a total film thickness of 1 ⁇ m to 50 ⁇ m. By setting the total film thickness to 1 ⁇ m or more, the effect of attenuating vibration generated by the striking force is exhibited, and the surface treatment film 360 can be formed without unevenness. In addition, by setting the thickness to 50 ⁇ m or less, the dimensional tolerance and surface roughness of the surface of the surface treatment film 360 are ensured while ensuring both the in-film strength of the surface treatment film 360 and the adhesion strength with the substrate interface to ensure durability. Can be suppressed.
- the synthetic resin 361 made of polyamideimide is used as the binder of the surface treatment film 360, but it is a thermosetting resin and is oil resistant, heat resistant, refrigerant resistant, and organic resistant. The same effect can be obtained even if an epoxy resin or a phenol resin excellent in the above is used.
- the surface treatment film 360 of the present embodiment uses molybdenum disulfide (MoS2) as the solid lubricant 362 dispersed in the surface treatment film 360.
- MoS2 molybdenum disulfide
- PTFE ethylene tetrafluoride resin
- C graphite
- antimony trioxide captures air and oxygen that have entered the surface treatment film 360 by using antimony trioxide (Sb2O3) together.
- Sb2O3 antimony trioxide
- the surface treatment agent is applied only to necessary portions. Therefore, since the coating amount can be reduced, the productivity is high and the refrigerant compressor can be provided at low cost.
- FIG. 21A is a plan view of a valve plate of the refrigerant compressor in the seventh embodiment of the present invention.
- FIG. 21B is a cross-sectional view of the valve plate of the refrigerant compressor in the seventh embodiment of the present invention.
- a recess 332 is formed in a region facing the arm portion 320c of the intake valve 320 on the opposite side of the valve plate 317 from the intake valve seat 341.
- the recess 332 is provided with a discharge valve 321 that opens and closes the discharge hole 319, and includes a discharge valve device that includes a spring lead 330 that elastically supports the discharge valve 321, and a valve stop 331 that fixes the discharge valve 321 and the spring lead 330. Yes.
- the thickness of the valve plate 317 is partially reduced. Due to distortion during molding and finishing of the valve plate 317, the convex shape is formed on the suction valve 320 side. The opposite area becomes the apex of the convex shape.
- the arm part 320c of the suction valve 320 comes into contact with the vicinity of the apex of the convex shape of the valve plate 317, and a strong striking force is likely to be generated.
- the elastic effect of the surface treatment film 360 including the synthetic resin 361 applied to the region of the valve plate 317 facing the arm portion 320c of the intake valve 320 reduces the impact force and improves the reliability of the intake valve 320.
- a compressor and a refrigeration apparatus using the compressor can be provided.
- the present invention includes a cylinder that houses a reciprocating piston in a sealed container, and a valve plate that has a suction valve seat that is disposed at the opening end of the cylinder and that surrounds the suction hole.
- a suction valve that opens and closes the suction hole the suction valve includes an opening and closing portion and an arm portion that operates when the opening and closing portion opens and closes, and a synthetic resin film is provided at least in a region of the valve plate that contacts the arm portion of the suction valve Have.
- the impact sound generated when the intake valve is closed can be reduced by the elastic effect of the surface treatment, the noise of the refrigerant compressor can be reduced.
- the present invention also includes a cylinder that houses a reciprocating piston in a sealed container, a valve plate having a discharge valve seat that is disposed at the opening end of the cylinder so as to surround the discharge hole, and a discharge hole.
- a discharge valve that opens and closes.
- the discharge valve may include an opening / closing portion and an arm portion that operates when the opening / closing portion opens and closes, and may have a synthetic resin film at least in a region of the valve plate that contacts the arm portion of the discharge valve.
- the impact sound generated when the discharge valve is closed can be reduced by the elastic effect of the surface treatment, the noise of the refrigerant compressor can be reduced.
- the present invention provides a cylinder that houses a reciprocating piston in a sealed container, a valve plate having a suction valve seat that is disposed at the opening end of the cylinder so as to surround the suction hole, and a suction hole. And an intake valve that opens and closes.
- the intake valve may include an opening / closing portion and an arm portion that operates when the opening / closing portion opens and closes, and may have a synthetic resin film at least in a region of the arm portion of the intake valve that contacts the valve plate.
- the oil repellency of the arm portion of the intake valve is improved, and refrigeration oil is less likely to be interposed in the gap between the valve plate and the arm portion of the intake valve. be able to. Therefore, the pressure loss during the intake stroke can be reduced and the rigidity of the arm portion of the intake valve can be increased, so that the delay in closing the intake valve can be suppressed. Then, the backflow of the suction refrigerant gas can be prevented, the volume efficiency can be improved, and the compressor efficiency of the refrigerant compressor can be improved.
- the impact sound generated when the intake valve is closed can be reduced by the elastic effect of the surface treatment, the noise of the refrigerant compressor can be reduced.
- the present invention also includes a cylinder that houses a reciprocating piston in a sealed container, a valve plate having a discharge valve seat that is disposed at the opening end of the cylinder so as to surround the discharge hole, and a discharge hole.
- a discharge valve that opens and closes.
- the discharge valve may include an opening / closing portion and an arm portion that operates when the opening / closing portion opens and closes, and may have a synthetic resin film at least in a region that contacts the valve plate in the arm portion of the discharge valve.
- the impact sound generated when the discharge valve is closed can be reduced by the elastic effect of the surface treatment, the noise of the refrigerant compressor can be reduced.
- the synthetic resin film may contain fluororubber as a binder and the solid lubricant may contain a fluororesin.
- the total thickness of the synthetic resin film may be 1 ⁇ m to 100 ⁇ m.
- the impact sound reduction effect can be increased, and the wear and peeling of the synthetic resin film can be suppressed, so that the surface roughness of the synthetic resin film can be reduced while ensuring durability, and long-term reliability.
- the refrigeration apparatus of the present invention may have a refrigerant circuit in which the compressor of the present invention, a radiator, a decompressor, and a heat absorber are connected in a ring shape by piping.
- the compressor efficiency is improved, and by installing the refrigerant compressor capable of reducing the noise, the power consumption of the refrigeration apparatus can be reduced, the energy can be saved, and the noise can be reduced.
- the present invention also includes a cylinder that houses a reciprocating piston, a valve plate that is disposed at an opening end of the cylinder and that has a suction valve seat provided to surround the suction hole, and a suction valve that opens and closes the suction hole.
- a surface treatment film containing a synthetic resin may be provided in a region of the valve plate facing the opening / closing portion of the suction valve or in the opening / closing portion of the suction valve.
- the striking force generated between the region of the valve plate facing the opening / closing portion of the suction valve and the opening / closing portion of the suction valve can be applied to either the region of the valve plate facing the opening / closing portion of the suction valve or the opening / closing portion of the suction valve. It is relaxed by the elastic effect of the surface treatment film containing the synthetic resin applied to the crab. As a result, the reliability of the suction valve can be improved, and the refrigerant compressor can be realized in which the hitting sound is reduced and high reliability and low noise are realized.
- a surface treatment film containing a synthetic resin may be provided in either the region of the valve plate facing the fixed portion of the suction valve or the fixed portion of the suction valve.
- valve plate may be formed with a recess in a region facing the arm portion of the suction valve opposite to the suction valve seat.
- the present invention may contain a solid lubricant as a surface treatment film containing a synthetic resin.
- the inclusion of a solid lubricant in the synthetic resin improves the wettability of the refrigeration machine oil, so that the lubricating oil can be held between the valve plate and the valve, the impact force is reduced by the oil film, and the reliability of the intake valve is further improved.
- An improved refrigerant compressor can be provided.
- the refrigerant compressor according to the present invention is high in efficiency and low in noise, it can be applied to all uses using a refrigeration cycle such as a home refrigerator, an air conditioner, a dehumidifier, a showcase, and a vending machine. .
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Abstract
Description
図1は、本発明の第1の実施の形態における冷媒圧縮機の断面図である。図2は、本発明の第1の実施の形態における冷媒圧縮機のバルブプレート周りの分解斜視図である。図3は、本発明の第1の実施の形態における冷媒圧縮機の要部断面図である。図4は、本発明の第1の実施の形態における冷媒圧縮機の吸入バルブの平面図である。図5は、本発明の第1の実施の形態における冷媒圧縮機の吐出バルブの平面図である。図6は、本発明の第1の実施の形態における冷媒圧縮機のバルブプレートの吸入側平面図である。図7は、本発明の第1の実施の形態における冷媒圧縮機の表面処理の断面図である。
図9は、本発明の第2の実施の形態における冷媒圧縮機の要部断面図である。図10は、本発明の第2の実施の形態における冷媒圧縮機のバルブプレートの吐出側平面図である。
図11は、本発明の第3の実施の形態における冷凍装置の構成を示す模式図である。ここでは、冷媒回路に、本発明の第1の実施の形態または本発明の第2の実施の形態で説明した冷媒圧縮機を搭載した構成とし、冷凍装置の基本構成の概略についてのみ説明する。
図12は、本発明の第4の実施の形態における冷媒圧縮機の断面図である。図2は、本発明の第4の実施の形態における冷媒圧縮機のバルブプレート周りの分解斜視図、図12は、本発明の第4の実施の形態における冷媒圧縮機のバルブプレートの要部断面図である。図13は、本発明の第4の実施の形態における冷媒圧縮機のバルブプレートの平面図である。図14は、本発明の第4の実施の形態における冷媒圧縮機の表面処理膜を示す断面図である。
図17は、本発明の第5の実施の形態における冷媒圧縮機のバルブプレートの要部断面図である。図18は、本発明の第5の実施の形態における冷媒圧縮機のバルブプレートの正面図である。
図19は、本発明の第6の実施の形態における冷媒圧縮機のバルブプレートの要部断面図である。図20は、本発明の第6の実施の形態における冷媒圧縮機のバルブプレートの平面図である。
図21Aは、本発明の第7の実施の形態における冷媒圧縮機のバルブプレートの平面図である。図21Bは、本発明の第7の実施の形態における冷媒圧縮機のバルブプレートの断面図である。
2,102,302 冷凍機油
3,103,303 作動流体
4,104,304 圧縮機本体
5,105,305 サスペンションスプリング
6,106,306 電動要素
7,107,307 ステータ
8,108,308 ロータ
9,109,309 圧縮要素
10,110,310 偏心軸
11,111,311 主軸
12,112,312 クランクシャフト
13,113,313 圧縮室
14,114,314 シリンダ
16,116,316 ピストン
17,117,317 バルブプレート
18,118,318 吸入孔
19,119,319 吐出孔
20,120,320 吸入バルブ
21,121,321 吐出バルブ
23,123,323 軸受部
52,152,352 シリンダヘッド
56,156,356 ヘッド空間
115,315 ブロック
120a,121a,320b 開閉部
120b,121b,320c アーム部
122,322 連結部
141,341 吸入弁座
142,342 吐出弁座
150,350 吸入管
151,351 給油機構
157,357 吐出管
160 合成樹脂膜
161 バインダー
162,362 固体潤滑剤
209 冷媒回路
211 圧縮機
213 放熱器
215 減圧装置
217 吸熱器
320a 固定部
332 凹部
360 表面処理膜
361 合成樹脂
Claims (14)
- 密閉容器内に、往復動するピストンを収納するシリンダと、前記シリンダの開口端に配置され吸入孔を囲うように設けられた吸入弁座を有したバルブプレートと、前記吸入孔を開閉する吸入バルブとを備え、前記吸入バルブは開閉部と前記開閉部が開閉する際動作するアーム部とを備え、少なくとも前記バルブプレートにおける前記吸入バルブの前記アーム部に当接する領域に合成樹脂膜を有する冷媒圧縮機。
- 密閉容器内に、往復動するピストンを収納するシリンダと、前記シリンダの開口端に配置され吐出孔を囲うように設けられた吐出弁座を有したバルブプレートと、前記吐出孔を開閉する吐出バルブとを備え、前記吐出バルブは開閉部と前記開閉部が開閉する際動作するアーム部とを備え、少なくとも前記バルブプレートにおける前記吐出バルブの前記アーム部に当接する領域に合成樹脂膜を有する冷媒圧縮機。
- 密閉容器内に、往復動するピストンを収納するシリンダと、前記シリンダの開口端に配置され吸入孔を囲うように設けられた吸入弁座を有したバルブプレートと、前記吸入孔を開閉する吸入バルブとを備え、前記吸入バルブは開閉部と前記開閉部が開閉する際動作するアーム部とを備え、少なくとも前記吸入バルブの前記アーム部における前記バルブプレートと当接する領域に合成樹脂膜を有する冷媒圧縮機。
- 密閉容器内に、往復動するピストンを収納するシリンダと、前記シリンダの開口端に配置され吐出孔を囲うように設けられた吐出弁座を有したバルブプレートと、前記吐出孔を開閉する吐出バルブとを備え、前記吐出バルブは開閉部と前記開閉部が開閉する際動作するアーム部とを備え、少なくとも前記吐出バルブの前記アーム部における前記バルブプレートと当接する領域に合成樹脂膜を有する冷媒圧縮機。
- 密閉容器内に、往復動するピストンを収納するシリンダと、前記シリンダの開口端に配置され吸入孔を囲うように設けられた吸入弁座を有したバルブプレートと、前記吸入孔を開閉する吸入バルブとを備え、前記吸入バルブは開閉部と前記開閉部が開閉する際動作するアーム部とを備え、前記バルブプレートにおける前記吸入バルブの前記開閉部と相対する領域或いは前記吸入バルブの前記開閉部に合成樹脂を含む表面処理膜を有する冷媒圧縮機。
- 前記バルブプレートにおける前記吸入バルブの固定部と相対する領域或いは前記吸入バルブの前記固定部のいずれかに合成樹脂を含む表面処理膜を有する請求項5に記載の冷媒圧縮機。
- 前記バルブプレートは前記開閉部と反対側の前記吸入バルブの前記アーム部と相対する領域に凹部を形成した請求項5に記載の冷媒圧縮機。
- 前記バルブプレートにおける前記吸入バルブの前記開閉部と相対する領域或いは前記吸入バルブの前記開閉部に合成樹脂膜を有する請求項1に記載の冷媒圧縮機。
- 前記合成樹脂膜が、フッ素ゴムをバインダーとし、固体潤滑剤にフッ素樹脂を含有した請求項1に記載の冷媒圧縮機。
- 前記合成樹脂膜が、フッ素ゴムをバインダーとし、固体潤滑剤にフッ素樹脂を含有した請求項2に記載の冷媒圧縮機。
- 前記合成樹脂膜が、フッ素ゴムをバインダーとし、固体潤滑剤にフッ素樹脂を含有した請求項3に記載の冷媒圧縮機。
- 前記合成樹脂膜が、フッ素ゴムをバインダーとし、固体潤滑剤にフッ素樹脂を含有した請求項4に記載の冷媒圧縮機。
- 前記合成樹脂膜の総膜厚さが、1μm~100μmである請求項1から4、または9から12の、いずれか一項に記載の冷媒圧縮機。
- 請求項1から12のいずれか一項に記載の冷媒圧縮機と、放熱器、減圧装置、吸熱器を配管によって環状に連結した冷媒回路を有する冷凍装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15808895.5A EP3159540A4 (en) | 2014-06-19 | 2015-06-18 | Refrigerant compressor and refrigeration appliance using same |
CN201580008641.4A CN105980707A (zh) | 2014-06-19 | 2015-06-18 | 制冷剂压缩机和使用它的制冷装置 |
JP2016529056A JPWO2015194181A1 (ja) | 2014-06-19 | 2015-06-18 | 冷媒圧縮機およびそれを用いた冷凍装置 |
US15/120,673 US20170009759A1 (en) | 2014-06-19 | 2015-06-18 | Refrigerant compressor and refrigeration appliance using same |
Applications Claiming Priority (4)
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JP2014-125906 | 2014-06-19 | ||
JP2014125906 | 2014-06-19 | ||
JP2014230818 | 2014-11-13 | ||
JP2014-230818 | 2014-11-13 |
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WO2015194181A1 true WO2015194181A1 (ja) | 2015-12-23 |
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PCT/JP2015/003052 WO2015194181A1 (ja) | 2014-06-19 | 2015-06-18 | 冷媒圧縮機およびそれを用いた冷凍装置 |
Country Status (5)
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US (1) | US20170009759A1 (ja) |
EP (1) | EP3159540A4 (ja) |
JP (1) | JPWO2015194181A1 (ja) |
CN (1) | CN105980707A (ja) |
WO (1) | WO2015194181A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2018165503A (ja) * | 2017-03-28 | 2018-10-25 | 東芝キヤリア株式会社 | 圧縮機及び冷凍サイクル装置 |
Families Citing this family (1)
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CN108105091B (zh) * | 2018-02-02 | 2023-11-24 | 广东美芝制冷设备有限公司 | 压缩机构和具有其的压缩机 |
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- 2015-06-18 CN CN201580008641.4A patent/CN105980707A/zh active Pending
- 2015-06-18 US US15/120,673 patent/US20170009759A1/en not_active Abandoned
- 2015-06-18 EP EP15808895.5A patent/EP3159540A4/en not_active Withdrawn
- 2015-06-18 JP JP2016529056A patent/JPWO2015194181A1/ja active Pending
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JP7013138B2 (ja) | 2017-03-28 | 2022-01-31 | 東芝キヤリア株式会社 | 圧縮機及び冷凍サイクル装置 |
Also Published As
Publication number | Publication date |
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US20170009759A1 (en) | 2017-01-12 |
EP3159540A1 (en) | 2017-04-26 |
EP3159540A4 (en) | 2017-10-18 |
CN105980707A (zh) | 2016-09-28 |
JPWO2015194181A1 (ja) | 2017-04-20 |
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