CN105980707A - Refrigerant compressor and refrigeration appliance using same - Google Patents

Abstract

A synthetic resin film is formed on an area of a valve plate (117) that is in contact with an arm part of an intake valve (120), or an area of the valve plate (117) that is in contact with an arm part of a discharge valve (121). This minimizes lag in the opening of the intake valve (120) and the discharge valve (121) caused by the adsorptive force of refrigerator oil, and reduces pressure loss during the intake stroke and the discharge stroke, thereby improving compressor efficiency. The sounds of impact produced when the intake valve (120) or the discharge valve (121) closes are also reduced by the elastic effect of the synthetic resin film, thereby making the compressor less noisy.

Description

Coolant compressor and its refrigerating plant of use

Technical field

The invention mainly relates in domestic refrigerator use coolant compressor efficiency improve and The technology of low noise.

Background technology

In order to tackle the energy-saving of domestic refrigerator, it is desirable to by utilizing inverter, sensor control The variable-speed operation of system realization and expanded range etc. thereof, improve the effect of coolant compressor further Rate.

As existing coolant compressor, have and utilize sintered metal materials formation to be configured at cylinder Opening, be provided with the suction valve seat arranged in the way of surrounding inlet hole and with the row of encirclement The structure (for example, referring to patent documentation 1) of the valve plate discharging valve seat that the mode portalled is arranged.

Figure 22 is the sectional view of the existing coolant compressor described in above-mentioned patent documentation 1, Figure 23 is the exploded perspective view of the valve plate surrounding of existing coolant compressor.

As shown in Figure 22 and Figure 23, coolant compressor, in hermetic container 1, is deposited in bottom Contain refrigerator oil 2 and be filled with working fluid 3, being also accommodated with compressor main body 4.Electronic Component 6 and compression element 9 by suspension spring 5 elastic bearing in hermetic container 1.

Electrical components 6 includes stator 7 and rotor 8.

Compression element 9 includes: has the bent axle 12 of eccentric shaft 10 and main shaft 11, form compression The cylinder 14 of room 13, the bearing portion 23 of supporting spindle 11 and back and forth transport inside cylinder 14 Dynamic piston 16.Additionally, include: seal the valve plate 17 of the end face of cylinder 14, be arranged at valve plate 17 and to connection discharge chambe 13 inside and outside inlet hole 18 and tap 19 carry out opening and closing respectively Inlet valve 20, dump valve 21 and link eccentric shaft 10 and the linking part (not shown) of piston 16.

Additionally, valve plate 17 with discharge chambe 13 opposition side, become lid to cover valve plate 17 Mode be configured with cylinder cap 52, valve plate 17 and cylinder cap 52 form a space 56.

The main shaft 11 of bent axle 12 is rotatably supported by axle at bearing portion 23, and is fixed with Rotor 8.

Then, the action to existing coolant compressor illustrates.

Coolant compressor produces magnetic field at stator 7 streaming current, makes to be fixed on main shaft 11 Rotor 8 rotates, and thus bent axle 12 rotates, by being installed on the linking part of eccentric shaft 10 (not Diagram), piston 16 moves back and forth in cylinder 14, suction is repeated, compresses, discharge stroke A series of circulations.

In suction stroke, when the direction action that piston 16 increases to the volume of cylinder 14, as Really the working fluid 3 in discharge chambe 13 expands and pressure in discharge chambe 13 follows less than refrigeration The pressure of ring low-pressure side (not shown), then inlet valve 20 starts to open at.Then, follow from refrigeration The low working fluid 3 of temperature that ring returns is in inlet hole 18 is flowed into discharge chambe 13.Now The tap 19 of valve plate 17 closed by dump valve 21.

Afterwards, in compression travel, when piston 16 stops from the lower of volume maximum of discharge chambe 13 When the position of point turns to the direction of the volume reduced in discharge chambe 13, the pressure in discharge chambe 13 Rise, due to the pressure in discharge chambe 13 and kind of refrigeration cycle low-pressure side (not shown) pressure it Poor, inlet valve 20 cuts out, and discharge chambe 13 is closed.

Afterwards, when piston 16 is further to the direction action of the volume reducing making discharge chambe 13, Working fluid 3 is compressed, and boosts to the pressure of regulation.

Discharging in stroke, when the pressure of the working fluid 3 in discharge chambe 13 rise, higher than by During the pressure within head space 56 that valve plate 17 and cylinder cap 52 are formed, due to pressure differential, discharge Valve 21 starts to open at.Then, working fluid within discharge chambe 13 3 by tap 19 to Head space 56 is flowed out.Afterwards, working fluid 3 from the beginning space 56 is via exhaust silencer (not Diagram) release to the high-pressure side (not shown) of kind of refrigeration cycle.

It is said that in general, valve plate 17 is provided with for configuring inlet hole 18, tap 19 and discharging The recess of valve 21, is therefore complicated shape, and in order to improve productivity and by sintering metal material Material is constituted.

But, in existing structure, owing to valve plate 17 is by sintered metal materials structure, so It is dispersed with the distinctive emptying aperture of sintered metal materials.Therefore, the refrigerator oil 2 in compressor accumulates In the surface of valve plate 17 and also it is dipped in inside.The refrigerator oil 2 immersed is for pressure Change and wait and ooze out to surface.Such refrigerator oil 2 is present in valve plate 17 and inlet valve 20/ The gap of dump valve 21.Accordingly, because be present in the cold of valve plate 17 and the bearing surface of each valve Freezing the absorption affinity of machine oil 2, the opening action of valve is hindered, and becomes the duty cryogen passed through Resistance, have produce the pressure loss, compressor efficiency reduce problem.

Additionally, valve plate 17 produces when Guan Bi with dump valve 21 with inlet valve 20 and valve plate 17 Percussion, the problem producing noise to hermetic container external leakage due to this percussion.Particularly Use the frequency conversion drive of electrical components 6 due to the reply for high efficiency, thus become with Low-speed running, owing to the noise of electrical components 6 reduces, so valve plate 17 and inlet valve 20 and Valve plate 17 becomes notable with the percussion of dump valve 21, increasingly constitutes the reason of noise.

The present invention reduces suction row by suppression inlet valve 20 and the opening delay of dump valve 21 With the pressure loss during discharge stroke during journey, it is achieved the raising of compressor efficiency.Additionally, pass through Percussion when reducing the closing of valve plate 17 and inlet valve 20 and valve plate 17 and dump valve 21 and Realize low noise.

Prior art literature

Patent documentation

Patent documentation 1: Japanese Unexamined Patent Publication 2000-45949 publication

Summary of the invention

The coolant compressor of the present invention is provided with storage in hermetic container and moves back and forth The cylinder of piston；Be configured at cylinder opening, have and arrange in the way of surrounding inlet hole Suck the valve plate of valve seat；Inlet valve with opening and closing inlet hole.Additionally, inlet valve includes opening/closing portion With the arm of action during opening/closing portion opening and closing, the district at least abutted at the arm with inlet valve of valve plate Territory has synthetic resin film.

Thereby, it is possible to suppression is produced owing to being present in the refrigerator oil of valve plate and the gap of inlet valve The inlet valve that raw absorption affinity causes open delay.Can provide and open delay by suppression and carry The coolant compressor of high compressor efficiency and use its refrigerating plant.

Additionally, by utilize valve plate formed synthetic resin film elastic effect reduce valve plate with Impact force when inlet valve is closed, it is possible to reduce percussion, it is achieved low noise.

Carry out past additionally, the coolant compressor of the present invention is provided with storage in hermetic container The cylinder of the piston of multiple motion；Be configured at cylinder opening, have in the way of surrounding tap The valve plate discharging valve seat arranged；Dump valve with opening and closing tap.Additionally, dump valve includes The arm of action when opening/closing portion and opening/closing portion opening and closing, at least arm with dump valve at valve plate support The region connect has synthetic resin film.

Thereby, it is possible to suppression is produced owing to being present in the refrigerator oil of valve plate and the gap of dump valve The dump valve that raw absorption affinity causes open delay.Can provide and open delay by suppression and carry The coolant compressor of high compressor efficiency and use its refrigerating plant.

Additionally, by utilize valve plate formed synthetic resin film elastic effect reduce valve plate with Impact force when dump valve is closed, it is possible to reduce percussion, it is achieved low noise.

Accompanying drawing explanation

Fig. 1 is the sectional view of the coolant compressor of the 1st embodiment of the present invention.

Fig. 2 is the decomposition of the valve plate surrounding of the coolant compressor of the 1st embodiment of the present invention Axonometric chart.

Fig. 3 is the main portion sectional view of the coolant compressor of the 1st embodiment of the present invention.

Fig. 4 is the plane graph of the inlet valve of the coolant compressor of the 1st embodiment of the present invention.

Fig. 5 is the plane graph of the dump valve of the coolant compressor of the 1st embodiment of the present invention.

Fig. 6 is that the suction side of the valve plate of the coolant compressor of the 1st embodiment of the present invention is put down Face figure.

Fig. 7 is cutting of the synthetic resin film of the coolant compressor of the 1st embodiment of the present invention Face figure.

Fig. 8 is that the valve of the coolant compressor representing the 1st embodiment with the present invention is opened The performance plot of the impact value closed and produce.

Fig. 9 is the main portion sectional view of the coolant compressor of the 2nd embodiment of the present invention.

Figure 10 is that the discharge side of the valve plate of the coolant compressor of the 2nd embodiment of the present invention is put down Face figure.

Figure 11 is the schematic diagram of the structure of the refrigerating plant of the 3rd embodiment representing the present invention.

Figure 12 is the sectional view of the coolant compressor of the 4th embodiment of the present invention.

Figure 13 is the decomposition of the valve plate surrounding of the coolant compressor of the 4th embodiment of the present invention Axonometric chart.

Figure 14 is the major part of the valve plate of the coolant compressor of the 4th embodiment of the present invention Sectional view.

Figure 15 is the plane graph of the valve plate of the coolant compressor of the 4th embodiment of the present invention.

Figure 16 is the Surface Treated Films of the coolant compressor of the 4th embodiment representing the present invention Sectional view.

Figure 17 is the major part of the valve plate of the coolant compressor of the 5th embodiment of the present invention Sectional view.

Figure 18 is the plane graph of the valve plate of the coolant compressor of the 5th embodiment of the present invention.

Figure 19 is the major part of the valve plate of the coolant compressor of the 6th embodiment of the present invention Sectional view.

Figure 20 is the plane graph of the valve plate of the coolant compressor of the 6th embodiment of the present invention.

Figure 21 A is the main portion of the valve plate of the coolant compressor of the 7th embodiment of the present invention Partial cross-section figure.

Figure 21 B is the sectional view of the valve plate of the coolant compressor of the 7th embodiment of the present invention.

Figure 22 is the sectional view of existing coolant compressor.

Figure 23 is the exploded perspective view of the valve plate surrounding of existing coolant compressor.

Detailed description of the invention

Hereinafter, with reference to the accompanying drawings of embodiments of the present invention.It addition, the present invention does not limit In present embodiment.

(the 1st embodiment)

Fig. 1 is the sectional view of the coolant compressor of the 1st embodiment of the present invention.Fig. 2 is The exploded perspective view of the valve plate surrounding of the coolant compressor of the 1st embodiment of the present invention.Fig. 3 It it is the main portion sectional view of the coolant compressor of the 1st embodiment of the present invention.Fig. 4 is The plane graph of the inlet valve of the coolant compressor of the 1st embodiment of the present invention.Fig. 5 is this The plane graph of the dump valve of the coolant compressor of the 1st embodiment of invention.Fig. 6 is this The suction side plane graph of the valve plate of the coolant compressor of the 1st bright embodiment.Fig. 7 is this The sectional view that the surface of the coolant compressor of the 1st embodiment of invention processes.

In Fig. 1 to Fig. 6, the coolant compressor in the 1st embodiment of the present invention is close Low viscous mineral oil is such as accumulated as refrigerator oil 102 in the bottom closed in container 101, and And the R600a etc. of the low hydro carbons of global warming up trend such as it is sealed with as working fluid 103.

Additionally, hermetic container 101 is formed by the deep drawing molding of iron plate, and include: one end It is connected with the low-pressure side of kind of refrigeration cycle (not shown) with connection, the other end in hermetic container 101 Suction tube 150；Through with one end hermetic container 101 and with exhaust silencer (not shown) even The discharge pipe 157 that logical, the other end is connected with the high-pressure side of kind of refrigeration cycle (not shown).

Additionally, in hermetic container 101, including compression element 109 and electrical components 106 Compressor main body 104 passes through suspension spring 105 by flexibly support containing in hermetic container 101.

Compression element 109 is by structures such as bent axle 112, cylinder body 115, piston 116, linking parts 122 Becoming, bent axle 112 includes eccentric shaft 110 and main shaft 111, and includes being arranged at main shaft 111 table The oil supply mechanism 151 being made up of spiral helicine groove etc. in face.

Electrical components 106 includes: in the lower section of cylinder body 115 by bolt (not shown) by spiral shell The stator 107 that nail is fixing；Be configured at stator 107 inner side coaxial on, be fixed on by hot jacket The rotor 108 of main shaft 111.Electrical components 106 is less than by inverter driving circuit, by including Multiple operating frequencys of the operating frequency (such as, 25Hz=1500r/min) of power frequency supply frequency Driven.

At cylinder body 115, form the cylinder 114 of discharge chambe 113 and by rotatable for main shaft 111 earth's axis The bearing portion 123 of supporting forms.

Additionally, at the end face of cylinder 114, including: have and sintered metal materials will be utilized to be processed into The inlet hole 118 of the inside and outside connection of discharge chambe 113 of type and the valve plate 117 of tap 119；Opening and closing The inlet valve 120 of inlet hole 118；Cylinder cap 152 with the lid becoming valve plate 117.And, valve Plate 117, inlet valve 120 and cylinder cap 152 all by hook bolt 153, with the end face by cylinder 114 The mode sealed is pressed fixing, and holds between valve plate 117 and cylinder cap 152 and be fixed with Absorbing silencer 154.

Herein, around the inlet hole 118 of valve plate 117, to surround the side of inlet hole 118 Formula is provided with suction valve seat 141, around tap 119, to surround the side of tap 119 Formula is provided with discharge valve seat 142.

Additionally, inlet valve 120 includes the opening/closing portion 120a and opening/closing portion 120a of opening and closing inlet hole 118 The arm 120b of action during opening and closing.

Further, in the one side of cylinder cap 152 side being configured at valve plate 117, it is configured with opening and closing row Portal 119 dump valve 121, be provided with the elastic spring including elastic bearing dump valve 121 130, the discharging valve device of the valve guard 131 of fixing dump valve 121 and elastic spring 130.And, A space 156 is formed by valve plate 117 and cylinder cap 152.

Additionally, dump valve 121 includes the opening/closing portion 121a and opening/closing portion 121a of opening and closing tap 119 The arm 121b of action during opening and closing.

Hereinafter, the coolant compressor constituted as described above is illustrated its action, effect.

Coolant compressor is by producing magnetic field at stator 107 streaming current, make to be fixed on master The rotor 108 of axle 111 rotates so that bent axle 112 rotates, by being rotatably installed on The linking part 122 of eccentric shaft 110, piston 116 moves back and forth in cylinder 114.And, Along with the reciprocating motion of this piston 116, working fluid 103 passes through absorbing silencer 154 to pressure It is inhaled in contracting room 113, compressed, afterwards through tap 119 and head space 156 to system SAPMAC method (not shown) is discharged.

Then, to the suction of compressor main body 104, compress, discharge stroke and illustrate.

In suction stroke, when volume from piston 116 to discharge chambe 113 increase direction action, Working fluid 103 in discharge chambe 113 expands, pressure in discharge chambe 113 disappears less than suction During pressure in sound device 154, due to the pressure in discharge chambe 113 with in absorbing silencer 154 The difference of pressure, inlet valve 120 starts to open at.Then, the arm 120b of inlet valve 120 enters Action is made, and the low working fluid 103 of the temperature that returns from kind of refrigeration cycle (not shown) is from suction Pipe 150 opens in hermetic container 101 temporarily, afterwards, is flowed into through absorbing silencer 154 In discharge chambe 113.

Afterwards, in compression travel, when the action of piston 116 turns to discharge chambe 113 from lower dead center The direction of volume reducing time, the pressure in discharge chambe 113 rises, due in discharge chambe 113 Pressure and absorbing silencer 154 in the difference of pressure, inlet valve 120 cuts out.Then, pressure Contracting room 113 is closed, and piston 116 is dynamic to the direction of the volume reducing of discharge chambe 113 further Making, thus, working fluid 103 is compressed, and boosts to the pressure of regulation.

Afterwards, in discharging stroke, when on the pressure of the working fluid 103 in discharge chambe 113 Rise, higher than formed by valve plate 117 and cylinder cap 152 the pressure within head space 156, due to When pressure differential and the power that produces exceed the power making dump valve 121 elastic deformation, tap 119 dozens Open.Then, the arm 121b action of dump valve 121, the working fluid within discharge chambe 113 103 are flowed out to head space 156 by tap 119.

Afterwards, working fluid 103 from the beginning space 156 via exhaust silencer (not shown), from Discharge pipe 157 is disposed to the high-pressure side (not shown) of kind of refrigeration cycle.

Space 156 is reduced with the pressure differential of discharge chambe 113, is produced due to this pressure differential right overhead Apply to the force rate elastic spring 130 of dump valve 121 and the restoring force hour of dump valve 121, Dump valve 121 cuts out, and discharge chambe 113 is closed, and piston 116 moves to lower dead center direction, Again transit to suction stroke.

Herein, the coolant compressor of present embodiment at least valve plate 117 with inlet valve 120 Arm 121b abut region be formed with synthetic resin film 160.

Synthetic resin film 160 is with the synthetic resin that is made up of fluorubber for binding agent 161, the most all It is dispersed with the fluororesin as kollag 162 evenly.

The synthetic resin film 160 being made up of such structure is according to implementation shape shown below Become.

First, carry out preparation heating, valve plate 117 is promoted to the temperature of regulation.This be in order to Make to be dissolved in the synthetic resin film being applied to the region that the arm 120b with inlet valve 120 abuts 160 evaporate and are coated equably.

The surface conditioning agent being deployed into containing kollag 162 is passed through spray application in valve The region that the arm 120b with inlet valve 120 of plate 117 abuts.It addition, when coating, for The Liniment is prevented blocking of appropriate shape to be installed control in the attachment in unwanted place Tool.

Afterwards, do carrying out a few minutes with the roughly the same temperature of temperature during preparation heating temporarily Dry, make the dry tack free of synthetic resin film 160.In the stage making dry tack free, if gently Be polished, the surface roughness of the most surface of synthetic resin film 160 is finely tuned, and becomes Well.

Herein, buff wheel preferably the nylon buff wheel of internal package abrasive particle and harder Buddha's warrior attendant Buff wheel, and preferably horsehair buff wheel.

Finally, 150 DEG C～230 DEG C of degree, carry out 30 minutes～about 2 hours firing, make Diluent in Liniment all evaporates, and makes synthetic resin film 160 be fixed in completely and inlet valve The region that the arm 120b of 120 abuts.

It is said that in general, valve plate 117 is provided with suction valve seat 141 and discharges valve seat 142 grade and be Complicated shape, from the standpoint of productivity and cost, utilizes sintered metal materials machine-shaping.

But, common sintered metal materials carries out pressurizeing after metal dust is enclosed mould, Heat and molding, be therefore scattered with continuous print emptying aperture on surface and inside.Therefore, cold-producing medium pressure Refrigerator oil 102 in contracting machine lodges in the surface of valve plate 117, is also dipped in inside.Leaching The refrigerator oil 102 entered oozes out to surface due to pressure oscillation etc..Such refrigerator oil 102 It is present in the gap of valve plate 117 and the arm 120b of inlet valve 120.Owing to being present in this gap Refrigerator oil 102 and produce absorption affinity, the arm 120b of inlet valve 120 is adsorbed onto valve plate 117。

Therefore, so that inlet valve 120 carries out action, need to have more the power removing absorption affinity, The opening action of inlet valve 120 can be hindered, produce and open delay, thus produce the pressure loss, Efficiency reduces.

In order to solve this problem, it is possible to by by the pressurization of sintered metal materials machine-shaping, add The operation of heat is repeated several times, thus increases the density of sintered metal materials, makes emptying aperture diminish, but Being that cost can raise, processability is deteriorated.Additionally, in the case of using cast iron materials, processing Position becomes many places, and processing cost can raise.

Therefore, in the present embodiment, at least at the arm with inlet valve 120 of valve plate 117 The region that 120b abuts is formed with synthetic resin film 160.

According to this structure, it is possible to utilize synthetic resin film 160 sealed sintering metal material distinctive Emptying aperture.Additionally, by forming synthetic resin film 160, oil repellent can be improved compared with metal covering (grease proofness).

Acted on by these, it is possible to suppress the arm owing to being present in valve plate 117 and inlet valve 120 Beating of the inlet valve 120 that the refrigerator oil 102 in the gap of portion 120b and the absorption affinity that produces cause Open delay, therefore, it is possible to pressure loss when reducing suction stroke, it is possible to increase refrigerant compression The compressor efficiency of machine.

This point is seen from the movement of the inlet valve 120 utilizing coolant compressor physical device to carry out Examine and also be able to confirm.Represent at Fig. 8 and its result is described.

Fig. 8 is that the impact utilizing acceleration transducer to produce the opening and closing due to valve is surveyed The result determined and obtain.A is the valve plate 117 being formed with synthetic resin film 160 using the present invention The result of coolant compressor, B is the existing valve using and not forming synthetic resin film 160 The result of the coolant compressor of plate 117.

Understand as shown in Figure 6, compared with existing valve plate, be formed with the valve plate of synthetic resin film Impact is produced in the anglec of rotation earlier.That is, the inlet valve 120 of the valve plate that surface processes it is formed with Open the moment relatively early, actual verification is to the suppression opening delay.

Then, in order to the oil repellent of synthetic resin mould 160 with metal covering is compared research, With being formed with the valve plate 117 of synthetic resin film 160 and not forming the existing of synthetic resin film 160 Valve plate 117 diffusion velocity of refrigerator oil 102 is compared.

Drip refrigerator oil 102 on each surface, measures the speed of its diffusion, and results verification arrives, shape Become to have the diffusion velocity slow more than 10% of the valve plate 117 of synthetic resin film 160.If oil repellent High then the flowing of refrigerator oil 102 is suppressed, and the diffusion velocity of refrigerator oil 102 reduces.By This, the oil repellent of actual verification synthetic resin film 160 is higher.

According to above result of study, be found to by valve plate 117 with inlet valve 120 Arm 120b abut region formed synthetic resin film 160 and improve opening of inlet valve 120 Postpone.

On the other hand, as improving the existing technology opening delay, it is possible to enumerate and make inlet valve 120 is thinning or make the width of arm 120b attenuate and reduce the technology of the rigidity of inlet valve 120, If but the rigidity of inlet valve 120 reduces, the durability being equivalent to palikinesia reduces, and holds Cracky.The i.e. service life reduction of coolant compressor.

Although additionally, when inlet valve 120 rigidity reduce time inlet valve 120 open moment meeting Become early, but elongated to the time closed in contrast.That is, produce closedown to postpone.When When producing closedown delay, can leak in compression travel, refrigerating capacity reduces.

But, in accordance with the invention it is possible to the improvement rigidly not reducing inlet valve 120 is opened and is prolonged Late, therefore, it is possible to offer does not improves the refrigeration of compressor efficiency with not reducing the life-span of inlet valve 120 Agent compressor.

Then, inlet valve 120 is produced when closed the percussion with valve plate 117, due to this The noise that percussion spills outside hermetic container 101 and produces illustrates.Especially because go out The frequency conversion drive of electrical components 106 is used, so becoming with low speed in the reply of high efficiency Operating, owing to the noise of electrical components 106 reduces, so valve plate 117 and inlet valve 120 Percussion becomes notable, increasingly constitutes the reason of noise.Further, due to this cold-producing medium pressure Contracting machine is mostly loaded into domestic refrigerator, is arranged at indoor, so noise must be reduced.

Therefore, it is possible to utilize the synthetic resin film formed at valve plate 117 as in the present embodiment The elastic effect of 160 reduces the impact force during closing of valve plate 117 and inlet valve 120, therefore can Enough reduce percussion, using the teaching of the invention it is possible to provide achieve the coolant compressor of low noise.

Further, by the impact force during closing that reduces valve plate 117 and inlet valve 120, energy Enough the rupturing and the breakage such as breach of suppression inlet valve 120, using the teaching of the invention it is possible to provide the cold-producing medium that reliability is high Compressor.

Additionally, synthetic resin film 160 is with fluorubber as binding agent, contain at kollag 162 There is fluororesin.The synthetic resin film 160 using fluorine has compared with other synthetic resin film 160 Elastic height, the characteristic that oil repellent is high.On the other hand, to equipment effective using refrigerator oil Utilize and limited by the height of its oil repellent.

But, in the present invention, it is possible to be determined by the profit that need not utilize refrigerator oil to keep With sealing, slip guarantees that part effectively utilizes.Thereby, it is possible to improve synthesis tree further The elasticity of adipose membrane 160, therefore, it is possible to reduce percussion further, using the teaching of the invention it is possible to provide achieve low noise The coolant compressor of sound.

Additionally it is possible to raising oil repellent, therefore, it is possible to effectively delay is opened in suppression, it is possible to carry For improve the coolant compressor of compressor efficiency.

Additionally, for containing kollag 162 in synthetic resin film 160, it is possible to sharp Cutting when valve plate 117 is closed is reduced with inlet valve 120 with the lubricant effect of kollag 162 Shear force, suppresses the stripping with substrate surface of the synthetic resin film 160 formed at valve plate 117, The coolant compressor with long-term high-durability can be provided.

It addition, in the present embodiment, about the structure of synthetic resin film 160, as bonding Agent 161, employs the synthetic resin being made up of fluorubber, but use thermohardening type resin and Oil resistivity, thermostability, resistance to cold-producing medium and the polyamide-imides of resistance to organic agent excellence, ring Epoxy resins or phenolic resin also are able to obtain same effect.

Additionally, in the present embodiment, as the solid profit being scattered in synthetic resin film 160 Lubrication prescription 162, employs fluororesin, but by molybdenum bisuphide (MoS₂), TFE (PTFE), graphite (C) is used alone or as a mixture and also is able to obtain same effect.

Further, in the case of using molybdenum bisuphide, graphite as kollag 162, By using antimony oxide (Sb simultaneously₂O₃), antimony oxide catches and enters synthetic resin film Air and the oxygen of 160 and oneself initial oxidation, thereby, it is possible to consolidating in suppression synthetic resin film 160 It is rotten that the oxidation of body lubricant 162 causes, it is possible to plays abrasion inhibition fully.

Additionally, by as in the present embodiment, use appropriate shading fixture or use pneumatic Injection system distributors etc., it is possible to be only coated in required part, therefore, it is possible to cut down Coating amount, therefore, it is possible to improve the productivity of coolant compressor, it is achieved cost degradation.

Additionally, the total film thickness of synthetic resin film 160 is 1 μm～100 μm.Be wherein 20 μm～ During the thickness of 70 μm, balance is best.This is because, by with fluorubber as binding agent, Containing fluororesin in kollag, even if thickness thickness also is able to maintain synthetic resin film 160 In film intensity and substrate interface be close to intensity, it is possible to increase the effect reducing percussion, And suppress abrasion and the stripping of synthetic resin film 160.It is accordingly possible to ensure durability, energy Enough reduce the surface roughness of synthetic resin film 160, using the teaching of the invention it is possible to provide guarantee long-term reliability also And productivity excellence coolant compressor.

If it addition, form same synthetic resin film 160 at the arm 120b of inlet valve 120, The most certainly these same effects it are obtained in that, further, it is possible to increase the arm of inlet valve 120 The rigidity of portion 120b, therefore, it is possible to the closedown of suppression inlet valve 120 postpones.Therefore, it is possible to it is anti- Only suck the adverse current of refrigerant gas, improve volume efficiency, it is possible to increase coolant compressor Compressor efficiency.

(the 2nd embodiment)

Fig. 9 is the main portion sectional view of the coolant compressor of the 2nd embodiment of the present invention. Figure 10 is the discharge side plane of the valve plate of the coolant compressor of the 2nd embodiment of the present invention Figure.

Fig. 1 of 1st embodiment of the basic structure of present embodiment and the expression present invention is extremely Fig. 5 is identical, therefore omits the description.Additionally, to identical with Fig. 1 to structure illustrated in fig. 5 The structure identical reference of mark, omit part explanation.

The coolant compressor of present embodiment is at least at the arm with dump valve 121 of valve plate 117 The region that portion 121b (with reference to Fig. 5) abuts is formed with synthetic resin film 160.

Synthetic resin film 160 is with the synthetic resin that is made up of fluorubber for binding agent 161, the most all It is dispersed with the fluororesin as kollag 162 evenly.

According to this structure, it is possible to utilize synthetic resin film 160 sealed sintering metal material distinctive Emptying aperture.Additionally, by forming synthetic resin film 160, oil repellent can be improved compared with metal covering.

Act on according to these, it is possible to suppress the arm owing to being present in valve plate 117 and dump valve 121 Beating of the dump valve 121 that the refrigerator oil 102 in the gap of portion 121b and the absorption affinity that produces cause Open delay, therefore, it is possible to reduce pressure loss when discharging stroke, it is possible to increase refrigerant compression The compressor efficiency of machine.

This point is seen from the movement of the dump valve 121 utilizing coolant compressor physical device to carry out Examine and also be able to confirm.Utilize Fig. 8 that its result is illustrated.Fig. 8 is to utilize acceleration sensing The result that the impact that opening and closing due to valve is produced by device is measured and obtains.A is to use The result of the coolant compressor of the valve plate 117 being formed with synthetic resin film 160 of the present invention, B It it is the knot of the coolant compressor using the existing valve plate 117 not forming synthetic resin film 160 Really.

Understand as shown in Figure 8, compared with existing valve plate, be formed with the valve plate of synthetic resin film Impact is produced in the anglec of rotation earlier.That is, the dump valve 121 of the valve plate that surface processes it is formed with Open the moment relatively early, actual verification is to the suppression opening delay.

Then, in order to the oil repellent of synthetic resin mould 160 with metal covering is compared research, With being formed with the valve plate 117 of synthetic resin film 160 and not forming the existing of synthetic resin film 160 Valve plate 117 diffusion velocity of refrigerator oil 102 is compared.

Drip refrigerator oil 102 on each surface, measures the speed of its diffusion, and results verification arrives, shape Become to have the diffusion velocity slow more than 10% of the valve plate 117 of synthetic resin film 160.If oil repellent High then the flowing of refrigerator oil 102 is suppressed, and the diffusion velocity of refrigerator oil 102 reduces.By This, the oil repellent of actual verification synthetic resin film 160 is higher.

According to above result of study, be found to by valve plate 117 with dump valve 121 Arm 121b abut region formed synthetic resin film 160 and improve opening of dump valve 121 Postpone.

On the other hand, as improving the existing technology opening delay, it is possible to enumerate and make dump valve 121 is thinning or make the width of arm 121b attenuate and reduce the technology of the rigidity of dump valve 121, If but the rigidity of dump valve 121 reduces, the durability being equivalent to palikinesia reduces, and holds Cracky.The i.e. service life reduction of coolant compressor.

Although additionally, when dump valve 121 rigidity reduce time dump valve 121 open moment meeting Become early, but elongated to the time closed in contrast.That is, produce closedown to postpone.When When producing closedown delay, the adverse current of cold-producing medium, reflation loss meeting can be produced in suction stroke Increase.

But, in accordance with the invention it is possible to the improvement rigidly not reducing dump valve 121 is opened and is prolonged Late, therefore, it is possible to offer does not improves the refrigeration of compressor efficiency with not reducing the life-span of dump valve 121 Agent compressor.

Then, dump valve 121 is produced when closed the percussion with valve plate 117, due to this The noise that percussion spills outside hermetic container 101 and produces illustrates.Especially because go out The frequency conversion drive of electrical components 106 is used, so becoming with low speed in the reply of high efficiency Operating, owing to the noise of electrical components 106 reduces, so valve plate 117 and dump valve 121 Percussion becomes notable, increasingly constitutes the reason of noise.Further, due to this cold-producing medium pressure Contracting machine is mostly loaded into domestic refrigerator, is arranged at indoor, so noise must be reduced.

Therefore, it is possible to utilize the synthetic resin film formed at valve plate 117 as in the present embodiment The elastic effect of 160 reduces the impact force during closing of valve plate 117 and dump valve 121, therefore can Enough reduce percussion, using the teaching of the invention it is possible to provide achieve the coolant compressor of low noise.

If it addition, form same synthetic resin film 160 at the arm 121b of dump valve 121, Certainly it also is able to obtain these identical effects, further, owing to dump valve 121 can be improved The rigidity of arm 121b, it is possible to the closedown of suppression dump valve 121 postpones.Accordingly, it is capable to Enough prevent the adverse current of discharging refrigerant gas, reduce reflation loss, it is possible to increase cold-producing medium pressure The compressor efficiency of contracting machine.

(the 3rd embodiment)

Figure 11 is the schematic diagram of the structure of the refrigerating plant of the 3rd embodiment representing the present invention. Herein, as the 1st embodiment or the 2nd of the present invention the being mounted with the present invention at refrigerant loop The structure of the coolant compressor of explanation in embodiment, only to the basic structure of refrigerating plant Overview illustrates.

In Figure 11, refrigerating plant includes: by the casing of the thermal insulation of an opening and opening and closing, this is opened The main body 201 of the door body structure of mouth；The inside of main body 201 is divided into the storage space of article 203 with the partition wall 207 of Machine Room 205；With to the refrigeration cooled down in storage space 203 Agent loop 209.

Refrigerant loop 209 is using as the embodiment 1 of compressor 211 or embodiment 2 The coolant compressor of middle explanation, radiator 213, decompressor 215 and heat extractor 217 are with joining Pipe connects into ring-type structure.

And, heat extractor 217 is configured at the storage space 203 possessing pressure fan (not shown) In.The cooling heat of heat extractor 217 passes through pressure fan as shown by the arrows with at storage space 203 The mode being inside circulated is stirred, thus cooled in storage space 203.

It is mounted with the 1st real of the present invention as compressor 211 at refrigerating plant described above Execute mode or the coolant compressor of the 2nd embodiment.And, compressor 211 is at valve plate 117 The region that abuts of the arm 120b with inlet valve 120 or valve plate 117 with dump valve 121 The region that arm 121b abuts, is formed with synthetic resin film 160.Thereby, it is possible to freezing-inhibiting Inlet valve 120 that the absorption affinity of machine oil 102 causes, dump valve 121 open delay, reduce and inhale Pressure loss when entering stroke, when discharging stroke, it is possible to improve compressor efficiency, and When the elastic effect utilizing synthetic resin film 160 reduces the closing of inlet valve 120, dump valve 121 The percussion produced.Therefore, it is possible to realize low noise, therefore, it is possible to reduce refrigerating plant Power consumption, it is achieved energy-saving, and also it is capable of low noise.

(the 4th embodiment)

Figure 12 is the sectional view of the coolant compressor of the 4th embodiment of the present invention.Fig. 2 is The exploded perspective view of the valve plate surrounding of the coolant compressor of the 4th embodiment of the present invention, figure 12 is the major part cross section of the valve plate of the coolant compressor of the 4th embodiment of the present invention Figure.Figure 13 is the plane graph of the valve plate of the coolant compressor of the 4th embodiment of the present invention. Figure 14 is cutting of the Surface Treated Films of the coolant compressor of the 4th embodiment representing the present invention Face figure.

As shown in Figure 12 to Figure 15, coolant compressor in the present embodiment, airtight The most low viscous mineral oil is accumulated as refrigerator oil 302 in bottom in container 301, and The R600a etc. of the low hydro carbons of such as global warming up trend it is enclosed as working fluid 303.

Additionally, hermetic container 301 improves the deep drawing molding of iron plate and formed, and include one end It is connected with the low-pressure side of kind of refrigeration cycle (not shown) with connection, the other end in hermetic container 301 The through hermetic container of suction tube 350 and one end 301 and with exhaust silencer (not shown) even The discharge pipe 357 that logical, the other end is connected with the high-pressure side of kind of refrigeration cycle (not shown).

Additionally, in hermetic container 301, including compression element 309 and electrical components 306 Compressor main body 304 passes through suspension spring 305 by flexibly support containing in hermetic container 301.

Compression element 309 is by structures such as bent axle 312, cylinder body 315, piston 316, linking parts 322 Becoming, bent axle 312 includes eccentric shaft 310 and main shaft 311, and includes being arranged at main shaft 311 table The oil supply mechanism 351 being made up of spiral helicine groove etc. in face.

Electrical components 306 includes: in the lower section of cylinder body 315 by bolt (not shown) by spiral shell The stator 307 that nail is fixing；Be configured at stator 307 inner side coaxial on, be fixed on by hot jacket The rotor 308 of main shaft 311.Electrical components 306 is less than by inverter driving circuit, by including Multiple operating frequencys of the operating frequency (such as, 25Hz=1500r/min) of power frequency supply frequency Driven.

At cylinder body 315, form the cylinder 314 of discharge chambe 313 and by rotatable for main shaft 311 earth's axis The bearing portion 323 of supporting forms.

Additionally, the end face at cylinder 314 is provided with having the suction of connection inside and outside by discharge chambe 313 The valve plate 317 of hand-hole 318 and tap 319；Inlet valve 320 with opening and closing inlet hole 318. Additionally, the cylinder cap 352 that valve plate 317 is sealed all by hook bolt 353, with the end by cylinder 314 The mode of face seal is pressed fixing.Further, hold between valve plate 317 and cylinder cap 352 It is fixed with absorbing silencer 354.Inlet valve 320 is formed by spring steel and rustless steel, including fixing In the fixed part 320a of valve plate 317, the opening/closing portion 320b of the inlet hole 318 of opening and closing valve plate 317 With the arm 320c linking fixed part 320a and opening/closing portion 320b.Additionally, valve plate 317 is by burning Knot metal material processing molding, is being configured at the one side of its cylinder cap 352 side, is configured with opening and closing row Portal 319 dump valve 321, be provided with the elastic spring including elastic bearing dump valve 321 330, the discharging valve device of the valve guard 331 of fixing dump valve 321 and elastic spring 330.And, A space 356 is formed by valve plate 317 and cylinder cap 352.

Hereinafter, the coolant compressor constituted as described above is illustrated its action, effect.

Coolant compressor is by producing magnetic field at stator 307 streaming current, make to be fixed on master The rotor 308 of axle 311 rotates so that bent axle 312 rotates, by being rotatably installed on The linking part 322 of eccentric shaft 310, piston 316 moves back and forth in cylinder 314.And, Along with the reciprocating motion of this piston 316, working fluid 303 passes through absorbing silencer 354 to pressure It is inhaled in contracting room 313, compressed, afterwards through tap 319 and head space 356 to system SAPMAC method (not shown) is discharged.

Then, to the suction of compressor main body 304, compress, discharge stroke and illustrate.

In suction stroke, when volume from piston 316 to discharge chambe 313 increase direction action, Working fluid 303 in discharge chambe 313 expands, pressure in discharge chambe 313 disappears less than suction During pressure in sound device 354, due to the pressure in discharge chambe 313 with in absorbing silencer 354 The difference of pressure, inlet valve 320 starts to open at.Then, the temperature returned from kind of refrigeration cycle is low Working fluid 303 open in hermetic container 301 from suction tube 350 temporarily, afterwards, warp Absorbing silencer 354 is flowed in discharge chambe 313.

Afterwards, in compression travel, when the action of piston 316 turns to discharge chambe 313 from lower dead center The direction of volume reducing time, the pressure in discharge chambe 313 rises, due in discharge chambe 313 Pressure and absorbing silencer 354 in the difference of pressure, inlet valve 320 cuts out.Then, pressure Contracting room 313 is closed, and piston 316 is dynamic to the direction of the volume reducing of discharge chambe 313 further Making, thus, working fluid 303 is compressed, and boosts to the pressure of regulation.

Afterwards, in discharging stroke, when on the pressure of the working fluid 303 in discharge chambe 313 Rise, higher than formed by valve plate 317 and cylinder cap 352 the pressure within head space 356, due to When pressure differential and the power that produces exceed the power making dump valve 321 elastic deformation, tap 319 dozens Open.Then, the working fluid 303 within discharge chambe 313 passes through tap 319 to head space 356 flow out.Working fluid 303 from the beginning space 356 is via exhaust silencer (not shown) row certainly Go out pipe 357 and be disposed to the high-pressure side (not shown) of kind of refrigeration cycle.

Space 356 is reduced with the pressure differential of discharge chambe 313, is produced due to this pressure differential right overhead Apply to the force rate elastic spring 330 of dump valve 321 and the restoring force hour of dump valve 321, Dump valve 321 cuts out, and discharge chambe 313 is closed, and piston 316 moves to lower dead center direction, Again transit to suction stroke.

Herein, as shown in Figure 14 to Figure 16, the coolant compressor of present embodiment is to burn The district relative with the arm 320c of inlet valve 320 of the valve plate 317 of knot metal material processing molding Territory is formed with the Surface Treated Films 360 containing synthetic resin 361.

Surface Treated Films 360 is with the synthetic resin 361 being made up of polyamide-imides (PAI) For binding agent, substantially evenly it is dispersed with the molybdenum disulfide particles as kollag 362.

The Surface Treated Films 360 being made up of such structure is according to implementation shape shown below Become.

First, carry out preparation heating, valve plate 317 is promoted to the temperature of regulation.This preparation adds Heat is in order to make to be dissolved in the evaporation of the solvent of Surface Treated Films 360 and will to be applied to valve plate 317 The Surface Treated Films 360 in the region relative with arm 320c is coated equably.

Then, by spraying, the surface conditioning agent being deployed into containing kollag 362 is coated with Spread on the region relative with the arm 320c of inlet valve 320 of valve plate 317.It addition, in coating Time, in order to prevent Liniment to be provided with the screening of appropriate shape in the attachment in unwanted place Gear tool.

Afterwards, do carrying out a few minutes with the roughly the same temperature of temperature during preparation heating temporarily Dry, make the dry tack free of Surface Treated Films 360.In the stage making dry tack free, if gently Be polished, the surface roughness of the most surface of Surface Treated Films 360 is finely tuned, and becomes Well.Herein, buff wheel preferably the nylon buff wheel of internal package abrasive particle and harder gold Just buff wheel, and preferably horsehair buff wheel.

Finally, at 180 DEG C～about 230 DEG C, carry out 30 minutes～about 2 hours firing, make Diluent in Liniment all evaporates, and makes Surface Treated Films 360 be fixed in completely and inlet valve The region relative for arm 320c of 320.

It is said that in general, valve plate 317 is provided with suction valve seat 341 and discharges valve seat 342 grade and thick Degree is uneven and be the shape of complexity, thus from the standpoint of productivity and cost, utilizes sintered gold Belong to materials processing molding.Additionally, in order to arrange the discharging valve device with dump valve 321, Being formed with recess 332 with sucking valve seat opposition side, due to machining deformation etc., valve plate 317 is sucking Valve 320 side becomes convex form (such as, about 10～100 μm).

Therefore, when inlet valve 320 cuts out the inlet hole 318 of valve plate 317, at valve plate 317 Convex form summit near, abut with the arm 320c of inlet valve 320, afterwards, owing to opening Closing part 320b closes inlet hole 318, produces the impact force that the abutting of arm 320c causes.

The arm 320c that additionally, there are inlet valve 320 loses and causes the situation of mal-compression. That is, the coolant compressor of described above is because passing through for the response to current high efficiency The variable-ratio that the thinning of inlet valve 320 that is made up of spring steel, the employing of frequency conversion drive realize Rotary mode, is in inlet valve 320 and puts aside the situation of metal fatigue further, for a long time During use, the arm 320c of inlet valve 320 can lose and cause mal-compression.

In order to solve this problem, in prior art, motion have by increase valve plate 317 thickness, Added stiffness and suppress the mode of the deformation that the processing of valve plate 317 causes, but due to tap Volume in 319 increases, and the cold-producing medium meeting reflation after compression, performance reduces.

Therefore, in present embodiment, in the arm 320c phase with inlet valve 320 of valve plate 317 To region formed containing the Surface Treated Films 360 of synthetic resin 361, thus, valve plate 317 Become convex form in inlet valve 320 side, when inlet valve 320 cuts out inlet hole 318, suck The arm 320c of valve 320 abuts near the summit of the convex form of valve plate 317, hits even if producing The power of beating, also utilizes and is formed in the region of the valve plate 317 relative with the arm 320c of inlet valve 320 The Surface Treated Films 360 containing synthetic resin 361 elastic effect relax impact force.Additionally, Prevent losing of the inlet valve 320 produced due to impact force.

Thereby, it is possible to provide the coolant compressor and its refrigerating plant of use that reliability is high.

The total film thickness of the Surface Treated Films 360 containing synthetic resin 361 is 1 μm～50 μm.Logical Crossing and making total film thickness is more than 1 μm, it is possible to utilize elastic effect to play impact force reducing effect, and Surface Treated Films 360 is formed uniformly.Additionally, by below for 50 μm, it can be ensured that surface Process film 360 film in intensity and with being close to intensity of substrate interface and guarantee durability, And dimensional tolerance and the surface roughness on the surface of Surface Treated Films 360 can be suppressed.Thus, The abrasion of Surface Treated Films 360, stripping can be suppressed, it is ensured that long-term reliability, thus can Coolant compressor and its refrigerating plant of use that productivity is excellent are enough provided.

It addition, in the present embodiment, as the binding agent of Surface Treated Films 360, employ The synthetic resin 361 being made up of polyamide-imides, but use the resin of thermohardening type and resistance to Oiliness, thermostability, resistance to cold-producing medium and the epoxy resin of resistance to organic agent excellence and phenolic resin It also is able to obtain same effect.

Additionally, the Surface Treated Films 360 of present embodiment is as the solid lubrication being dispersed therein Agent 362 employs molybdenum bisuphide (MoS₂), but by TFE (PTFE), graphite (C) individually or mixedly use and also be able to obtain same effect.

Further, in the case of using molybdenum bisuphide, graphite as kollag 362, Can be by using antimony oxide (Sb simultaneously₂O₃), by make antimony oxide catch into Enter the air to Surface Treated Films 360, oxygen and oneself initial oxidation, suppress Surface Treated Films 360 In the oxidation of kollag 362 cause rotten, play abrasion inhibition fully, There is effect.

Additionally, by as in the present embodiment, use appropriate shading fixture or use pneumatic Injection system distributor (not shown) etc., it is possible to only process at required part coated surfaces Agent, therefore, it is possible to cut down coating amount, therefore, it is possible to improve productivity, provides refrigeration with low cost Agent compressor.

It addition, form the surface containing synthetic resin 361 at the arm 320c of inlet valve 320 Reason film 360, the most also has same effect.

(the 5th embodiment)

Figure 17 is the major part of the valve plate of the coolant compressor of the 5th embodiment of the present invention Sectional view.Figure 18 is the front of the valve plate of the coolant compressor of the 5th embodiment of the present invention Figure.

The basic structure of present embodiment is identical with Figure 12, therefore omits the description.Additionally, to figure The structure that in 12, the structure of explanation is identical, marks identical reference, omits part explanation.

The coolant compressor of present embodiment is at the valve plate by sintered metal materials machine-shaping The region relative with the opening/closing portion 320b of inlet valve 320 of 317, i.e. to surround inlet hole 318 Mode arrange suck valve seat 341, be formed with the Surface Treated Films containing synthetic resin 361 360。

By sucking valve seat 341 formation containing synthetic resin 361 as in the present embodiment Surface Treated Films 360, it is possible to reduce the impact during closing sucking valve seat 341 and inlet valve 320 Power, it is possible to rupturing and the breakage such as breach of suppression inlet valve 320.Thereby, it is possible to provide reliable Property high coolant compressor and use its refrigerating plant.

Furthermore it is possible to use sucking the surface containing synthetic resin 361 that valve seat 341 is formed Process the hitting when elastic effect of film 360 reduces the closing sucking valve seat 341 and inlet valve 320 The power of beating, therefore, it is possible to reduce percussion, using the teaching of the invention it is possible to provide achieve the refrigerant compression of low noise Machine and its refrigerating plant of use.Particularly coolant compressor is due to answering for high efficiency To and use the frequency conversion drive of electrical components 306, so becoming at low speed, due to electronic The noise of component 306 reduces, so it is easy with the percussion of inlet valve 320 to suck valve seat 341 Manifest.And, this coolant compressor is loaded into the most of household refrigeration being arranged at indoor Storehouse, so its percussion is more prone to manifest and must reduce noise, the most effectively.

It addition, common sintered metal materials carries out pressurizeing after metal dust is enclosed mould, Heat and molding, be therefore scattered with continuous print emptying aperture on surface and inside.Accordingly, because refrigeration Agent can be leaked by this emptying aperture, sucks the sealing deterioration of valve seat 341 and inlet valve 320, effect Rate reduces.Require especially for response energy-saving and use low viscous refrigerator oil 302, from And the sealing that refrigerator oil 302 causes reduces all the more, therefore the adverse current of working fluid 303 is led The performance caused reduces and becomes notable.

In order to solve this problem, in prior art, by repeatedly sintered metal materials being added The pressurization of work molding, the operation of heating, strengthen the density of sintered metal materials, make emptying aperture diminish, But cost uprises, processability is deteriorated.Additionally, in the case of using cast iron materials, processing Position becomes multiple, and processing cost uprises.

But, in the present embodiment, because being formed containing synthetic resin sucking valve seat 341 The Surface Treated Films 360 of 361, it is possible to utilize the Surface Treated Films containing synthetic resin 361 360 seal interspersing among the distinctive emptying aperture of sintered metal materials sucked in valve seat 341.Thus, The cold-producing medium leakage sucking valve seat 341 with inlet valve 320 can be reduced, it is possible to increase sealing, The adverse current of the working fluid 303 when suppression compression, discharge stroke.And, it is possible to reduce freezing The reduction of ability, improves coolant compressor and the use of compressor efficiency with low cost Its refrigerating plant.

Additionally, by moistening containing solid in the Surface Treated Films 360 containing synthetic resin 361 Lubrication prescription 362, it is possible to utilize the lubricant effect of kollag 362, reduces and sucks valve seat 341 Shearing force when closing with inlet valve 320, it is possible to suppress sucking the surface that valve seat 341 is formed Process the stripping with substrate surface of film 360.Can guarantee that height is resistance to for a long time thus, it is possible to provide The coolant compressor of property and its refrigerating plant of use for a long time.

Additionally, due to the effect of kollag 362, coarse protuberance is eliminated form ahead of time For smooth valve seat, it is possible to increase suck the sealing of valve seat 341 and inlet valve 320.Cause And, it is possible to the reduction of the refrigerating capacity that suppression leakage ahead of time causes, using the teaching of the invention it is possible to provide improve compression The coolant compressor of engine efficiency and its refrigerating plant of use.

Additionally, the total film thickness of Surface Treated Films 360 containing synthetic resin 361 be 1 μm～ 50μm.By making total film thickness be more than 1 μm, it is possible to utilize sealing to improve effect and elastic effect Fruit plays impact force reducing effect, and Surface Treated Films 360 is formed uniformly.Additionally, pass through It is below 50 μm, it can be ensured that intensity and tight with substrate interface in the film of Surface Treated Films 360 Paste both intensity and guarantee durability, and the size on the surface of Surface Treated Films 360 can be suppressed Tolerance and surface roughness.Thus, it is possible to the suppression abrasion of Surface Treated Films 360, stripping, Guarantee long-term reliability, it is possible to provide coolant compressor and the use that productivity is excellent Its refrigerating plant.

It addition, in the present embodiment, as the binding agent of Surface Treated Films 360, employ The synthetic resin 361 being made up of polyamide-imides, but use the resin of thermohardening type and resistance to Oiliness, thermostability, resistance to cold-producing medium and the epoxy resin of resistance to organic agent excellence and phenolic resin It also is able to obtain same effect.

Additionally, the Surface Treated Films 360 of present embodiment is as the solid lubrication being dispersed therein Agent 362 employs molybdenum bisuphide (MoS₂), but by TFE (PTFE), graphite (C) individually or mixedly use and also be able to obtain same effect.Further, two sulfur are being used In the case of change molybdenum, graphite are as kollag 362, it is possible to by using three oxidations simultaneously Two antimony (Sb₂O₃), the sky of Surface Treated Films 360 is entered to by making antimony oxide catch Gas, oxygen and oneself initial oxidation, the oxygen of the kollag 362 in suppression Surface Treated Films 360 It is rotten that change causes, and plays abrasion inhibition fully, has effect.

Additionally, by as in the present embodiment, use appropriate shading fixture or use pneumatic Injection system distributor (not shown) etc., it is possible to only process at required part coated surfaces Agent, therefore, it is possible to cut down coating amount, therefore, it is possible to improve productivity, provides refrigeration with low cost Agent compressor.

It addition, form the surface containing synthetic resin 361 at the opening/closing portion 320b of inlet valve 320 Process film 360, the most also there is same effect.

(the 6th embodiment)

Figure 19 is the major part of the valve plate of the coolant compressor of the 6th embodiment of the present invention Sectional view.Figure 20 is the plane of the valve plate of the coolant compressor of the 6th embodiment of the present invention Figure.

The basic structure of present embodiment is also identical with Figure 12, therefore omits the description.Additionally, it is right The structure that structure illustrated in fig. 12 is identical, marks identical reference, omits a part and says Bright.

The coolant compressor of present embodiment is in the 4th embodiment of the present invention or the present invention On the basis of the structure of the 5th embodiment, further by sintered metal materials machine-shaping The region relative with the fixed part 320a of inlet valve 320 of valve plate 317 is formed containing synthesis tree The Surface Treated Films 360 of fat 361.

Thereby, it is possible to utilize the fixed part 320a that is equivalent to inlet valve 320 at valve plate 317 The Surface Treated Films 360 containing synthetic resin 361 that region is formed, makes owing to sucking valve seat 341 Impact force during closing with inlet valve 320 and vibration that the vibration that produces is propagated at valve plate 317 Decay.Therefore, it is possible to reduce vibration and percussion, using the teaching of the invention it is possible to provide achieve the refrigeration of low noise Agent compressor and its refrigerating plant of use.Particularly coolant compressor as described above that Sample must reduce noise, the most effectively.

Additionally, the total film thickness of Surface Treated Films 360 containing synthetic resin 361 be 1 μm～ 50μm.By making total film thickness be more than 1 μm, it is possible to play the vibration making to produce because of impact force The effect of decay, and Surface Treated Films 360 is formed uniformly.Additionally, by below for 50 μm, Be able to ensure that intensity in the film of Surface Treated Films 360 and with substrate interface be close to intensity and Guarantee durability, and the dimensional tolerance on the surface of Surface Treated Films 360 and surface can be suppressed thick Rugosity.

Thus, it is possible to the suppression abrasion of Surface Treated Films 360, stripping, it is ensured that long-term is reliable Property, it is possible to provide coolant compressor and its refrigerating plant of use that productivity is excellent.

It addition, in the present embodiment, as the binding agent of Surface Treated Films 360, employ The synthetic resin 361 being made up of polyamide-imides, but use the resin of thermohardening type and resistance to Oiliness, thermostability, resistance to cold-producing medium and the epoxy resin of resistance to organic agent excellence and phenolic resin It also is able to obtain same effect.

Additionally, the Surface Treated Films 360 of present embodiment is as the solid lubrication being dispersed therein Agent 362 employs molybdenum bisuphide (MoS₂), but by TFE (PTFE), graphite (C) individually or mixedly use and also be able to obtain same effect.Further, two sulfur are being used In the case of change molybdenum, graphite are as kollag 362, it is possible to by using three oxidations simultaneously Two antimony (Sb₂O₃), the sky of Surface Treated Films 360 is entered to by making antimony oxide catch Gas, oxygen and oneself initial oxidation, the oxygen of the kollag 362 in suppression Surface Treated Films 360 It is rotten that change causes, and plays abrasion inhibition fully, has effect.

Additionally, by as in the present embodiment, use appropriate shading fixture or use pneumatic Injection system distributor (not shown) etc., it is possible to only process at required part coated surfaces Agent, therefore, it is possible to cut down coating amount, therefore, it is possible to improve productivity, provides refrigeration with low cost Agent compressor.

It addition, form the surface containing synthetic resin 361 at the fixed part 320a of inlet valve 320 Process film 360, the most also there is same effect.

(the 7th embodiment)

Figure 21 A is the plane graph of the valve plate of the coolant compressor of the 7th embodiment of the present invention. Figure 21 B is the sectional view of the valve plate of the coolant compressor of the 7th embodiment of the present invention.

The basic structure of present embodiment is also identical with Figure 12, therefore omits the description.Additionally, it is right The structure that structure illustrated in fig. 12 is identical, marks identical reference, omits a part and says Bright.

The coolant compressor of present embodiment valve plate 317 with suck valve seat 341 opposition side, It is formed with recess 332 in the region relative with the arm 320c of inlet valve 320.

At recess 332, be configured with the dump valve 321 of opening and closing tap 319, be provided with include right Dump valve 321 carries out flexibly mounted elastic spring 330, fixing dump valve 321 and elastic spring The discharging valve device of the valve guard 331 of 330.

In the formation of this recess 332, the caliper portion of valve plate 317 is thinning, due to valve plate 317 Molding and deformation during polish, become convex form in inlet valve 320 side, particularly with suction The region relative for arm 320c entering valve 320 becomes the summit of convex form.

When inlet valve 320 cuts out inlet hole 318, the arm 320c of inlet valve 320 and valve plate Abut near the summit of the convex form of 317, easily produce strong impact force.But, utilize with The region of the valve plate 317 relative for arm 320c of inlet valve 320 formed containing synthetic resin 361 The elastic effect of Surface Treated Films 360, it is possible to relax impact force, it is provided that improve inlet valve The coolant compressor of the reliability of 320 and its refrigerating plant of use.

As described above, the present invention is provided with storage in hermetic container and carries out back and forth The cylinder of the piston of motion；Be configured at cylinder opening, have and set in the way of surrounding inlet hole The valve plate sucking valve seat put；With the inlet valve of opening and closing inlet hole, additionally, inlet valve includes out The arm of action when closing part and opening/closing portion opening and closing, at least arm with inlet valve at valve plate abut Region there is synthetic resin film.

Thus, the region oil repellent that valve plate abuts with the arm of inlet valve improves, in valve plate and suction The gap of the arm entering valve is difficult to there is refrigerator oil, it is possible to the absorption affinity of freezing-inhibiting machine oil is drawn Rise inlet valve open delay.Pressure loss during suction stroke can be reduced, it is possible to increase Refrigerant compression engine efficiency.

Furthermore it is possible to use surface process elastic effect reduce inlet valve close time produce beat Hit sound, it is achieved the low noise of coolant compressor.

Additionally, the present invention can also be for following manner: be provided with being accommodated in hermetic container The cylinder of the reciprocating piston of row；Be configured at cylinder opening, have to surround tap The valve plate discharging valve seat that mode is arranged；Dump valve with opening and closing tap.Additionally, dump valve Including the arm of action when opening/closing portion and opening/closing portion opening and closing, at least at the arm with dump valve of valve plate The region that portion abuts has synthetic resin film.

Thus, the region oil repellent that valve plate abuts with the arm of dump valve improves, valve plate and row The gap of the arm going out valve is difficult to there is refrigerator oil.Therefore, it is possible to the suction of freezing-inhibiting machine oil The dump valve that attached power causes open delay, therefore, it is possible to reduce discharge stroke time the pressure loss, Refrigerant compression engine efficiency can be improved.

Furthermore it is possible to use surface process elastic effect reduce dump valve close time produce beat Hit sound, it is achieved the low noise of coolant compressor.

Additionally, the present invention can also be for following manner: be provided with being accommodated in hermetic container The cylinder of the reciprocating piston of row；Be configured at cylinder opening, have to surround inlet hole The valve plate sucking valve seat that mode is arranged；Inlet valve with opening and closing inlet hole.Additionally, inlet valve Including the arm of action when opening/closing portion and opening/closing portion opening and closing, at least inlet valve arm and valve The region that plate abuts has synthetic resin film.

Thus, the oil repellent of the arm of inlet valve improves, between the arm of valve plate and inlet valve Gap is difficult to there is refrigerator oil, it is possible to beating of the inlet valve that the absorption affinity of freezing-inhibiting machine oil causes Open delay.Therefore, it is possible to pressure loss when reducing suction stroke, and inlet valve can be improved The rigidity of arm, therefore, it is possible to the closedown of suppression inlet valve postpones.And, it is possible to prevent from inhaling Enter the adverse current of refrigerant gas, it is possible to increase volume efficiency, improve the compression of coolant compressor Engine efficiency.

Furthermore it is possible to use surface process elastic effect reduce inlet valve close time produce beat Hit sound, it is achieved the low noise of coolant compressor.

Additionally, the present invention can also be for following manner: be provided with being accommodated in hermetic container The cylinder of the reciprocating piston of row；Be configured at cylinder opening, have to surround tap The valve plate discharging valve seat that mode is arranged；Dump valve with opening and closing tap.Additionally, dump valve Including the arm of action when opening/closing portion and opening/closing portion opening and closing, at least dump valve arm and valve The region that plate abuts has synthetic resin film.

Thus, the oil repellent of the arm of dump valve improves, between the arm of valve plate and dump valve Gap is difficult to there is refrigerator oil, it is possible to beating of the dump valve that the absorption affinity of freezing-inhibiting machine oil causes Open delay.Therefore, it is possible to reduce pressure loss when discharging stroke, and dump valve can be improved The rigidity of arm, therefore, it is possible to the closedown of suppression dump valve postpones.And, it is possible to the row of preventing Go out the adverse current of refrigerant gas, it is possible to reduce reflation loss, improve the pressure of coolant compressor Contracting engine efficiency.

Furthermore it is possible to use surface process elastic effect reduce dump valve close time produce beat Hit sound, it is achieved the low noise of coolant compressor.

Additionally, the present invention can also be following manner: synthetic resin film with fluorubber as binding agent, Containing fluororesin in kollag.

Thereby, it is possible to improve the elasticity of synthetic resin film further, therefore, it is possible to reduce further Percussion, it is achieved the low noise of coolant compressor.Additionally, refuse oil because can also improve Property, it is possible to the most really delay is opened in suppression, it is possible to increase the pressure of coolant compressor Contracting engine efficiency.

Additionally, the present invention can also be for following manner: make the total film thickness of synthetic resin film be 1 μm～ 100μm。

Thereby, it is possible to increase percussion reducing effect, and suppress synthetic resin film abrasion and Peel off, it can be ensured that durability reduces the surface roughness of synthetic resin film simultaneously, it is possible to really There is provided, on the basis of protecting long-term reliability, the coolant compressor that productivity is excellent.

Utilize pipe arrangement by the compressor of the present invention additionally, the refrigerating plant of the present invention can also have Ring-type refrigerant loop is connected to radiator, decompressor, heat extractor.

Thereby, it is possible to by improving compressor efficiency and achieving the cold-producing medium pressure of low noise The loading of contracting machine reduces the power consumption of refrigerating plant, it is achieved energy-saving also realizes low noise.

Additionally, the present invention can also be following manner, comprising: storage carries out reciprocating The cylinder of piston；Be configured at cylinder opening, there is the suction arranged in the way of surrounding inlet hole Enter the valve plate of valve seat；With the inlet valve of opening and closing inlet hole, at the opening/closing portion with inlet valve of valve plate The opening/closing portion of relative region or write valve is provided with the Surface Treated Films containing synthetic resin.

Thereby, it is possible to utilize at the relative region of the opening/closing portion with inlet valve of valve plate or inlet valve Opening/closing portion in the elastic effect of the Surface Treated Films containing synthetic resin that formed of arbitrary place, Relax and produce between region and the opening/closing portion of inlet valve that the opening/closing portion with inlet valve of valve plate is relative Raw impact force.Thereby, it is possible to improve the reliability of inlet valve and reduce percussion, it is possible to carry For achieving the coolant compressor of high reliability and low noise.

Additionally, in the relative district of the opening/closing portion with inlet valve that Surface Treated Films is formed at valve plate In the case of territory, i.e. suction valve seat, it is possible to utilize the Surface Treated Films containing synthetic resin to dissipate It is distributed in the sintered metal materials distinctive emptying aperture sealing sucking valve seat, reduces and suck valve seat and suction The cold-producing medium leakage of valve, improves sealing.Thereby, it is possible to when suppression compression, discharge stroke The adverse current of working fluid, reduces the reduction of refrigerating capacity, it is provided that improve the system of compressor efficiency Refrigerant compressor.

Additionally, the present invention can also be following manner: in the fixed part phase with inlet valve of valve plate To region or inlet valve fixed part in any one be provided with the surface containing synthetic resin Process film.

Thereby, it is possible to utilize fixed part or write valve fixed part formed containing synthetic resin Surface Treated Films, impact force when making the closing owing to sucking valve seat and inlet valve and produce Vibrate and decay during valve plate is propagated.Therefore, it is possible to reduce vibration and percussion, it is possible to carry For achieving the coolant compressor of low noise.

Additionally, the present invention can also be following manner: valve plate with suck valve seat opposition side with The region that the arm of inlet valve is relative is formed with recess.

In the formation of this recess, the caliper portion of valve plate is thinning, due to molding and the finishing of valve plate The deformation in man-hour, becomes convex form in inlet valve side, easily produces when suction valve closure inlet hole Raw strong impact force.But, utilize the elastic effect of the Surface Treated Films containing synthetic resin, This impact force can be relaxed, using the teaching of the invention it is possible to provide improve the coolant compressor of the reliability of inlet valve.

Additionally, the present invention can also be containing kollag as the surface containing synthetic resin Reason film.

Thereby, it is possible to utilize the lubricant effect of the kollag contained in Surface Treated Films to reduce Sucking shearing force when valve seat is closed with dump valve with inlet valve and discharge valve seat, suppression is at valve seat The stripping with substrate surface of the Surface Treated Films formed, therefore, it is possible to offer has high resistance to for a long time The coolant compressor of property for a long time.Additionally, utilize the effect of kollag, it is possible to eliminate as early as possible Coarse protuberance and become smooth valve seat, improve the sealing sucking valve seat and inlet valve, It is possible to the reduction suppressing to leak the refrigerating capacity caused as early as possible, using the teaching of the invention it is possible to provide improve compression The coolant compressor of engine efficiency.

Further, utilize by synthetic resin containing kollag and realize to freezing The raising effect of the wettability of machine oil, lubricating oil can be maintained between valve plate and valve, it is possible to logical Cross oil film and reduce impact force, it is provided that further increase the refrigerant compression of the reliability of inlet valve Machine.

Industrial utilizability

As it has been described above, the refrigerant compression engine efficiency in the present invention is high, noise is low, therefore, it is possible to At the air-conditioning with domestic refrigerator as representative, dehumidifier, show window and automatic vending machine etc. use system All purposes of SAPMAC method all can be applied.

The explanation of reference

1,101,301 hermetic container

2,102,302 refrigerator oil

3,103,303 working fluid

4,104,304 compressor main body

5,105,305 suspension spring

6,106,306 electrical components

7,107,307 stator

8,108,308 rotor

9,109,309 compression element

10,110,310 eccentric shaft

11,111,311 main shaft

12,112,312 bent axle

13,113,313 discharge chambe

14,114,314 cylinder

16,116,316 piston

17,117,317 valve plate

18,118,318 inlet hole

19,119,319 tap

20,120,320 inlet valve

21,121,321 dump valve

23,123,323 bearing portion

52,152,352 cylinder cap

56,156,356 spaces

115,315 cylinder body

120a, 121a, 320b opening/closing portion

120b, 121b, 320c arm

122,322 linking part

141,341 valve seat is sucked

142,342 valve seat is discharged

150,350 suction tube

151,351 oil supply mechanism

157,357 discharge pipe

160 synthetic resin films

161 binding agents

162,362 kollag

209 refrigerant loops

211 compressors

213 radiators

215 decompressors

217 heat extractors

320a fixed part

332 recesses

360 Surface Treated Films

361 synthetic resin

Claims (14)

1. a coolant compressor, it is characterised in that:

It is provided with in hermetic container

Storage carries out the cylinder of reciprocating piston；

Be configured at described cylinder opening, there is the suction arranged in the way of surrounding inlet hole The valve plate of valve seat；With

The inlet valve of inlet hole described in opening and closing,

Described inlet valve includes the arm carrying out action when opening/closing portion and described opening/closing portion opening and closing,

The region at least abutted at the described arm with described inlet valve of described valve plate has synthesis Resin molding.

2. a coolant compressor, it is characterised in that:

It is provided with in hermetic container

Storage carries out the cylinder of reciprocating piston；

Be configured at described cylinder opening, there is the discharge arranged in the way of surrounding tap The valve plate of valve seat；With

The dump valve of tap described in opening and closing,

Described dump valve includes the arm carrying out action when opening/closing portion and described opening/closing portion opening and closing,

The region at least abutted at the described arm with described dump valve of described valve plate has synthesis Resin molding.

3. a coolant compressor, it is characterised in that:

It is provided with in hermetic container

Storage carries out the cylinder of reciprocating piston；

Be configured at described cylinder opening, there is the suction arranged in the way of surrounding inlet hole The valve plate of valve seat；With

The inlet valve of inlet hole described in opening and closing,

Described inlet valve includes the arm carrying out action when opening/closing portion and described opening/closing portion opening and closing,

At least region abutted with described valve plate at the described arm of described inlet valve has synthesis Resin molding.

4. a coolant compressor, it is characterised in that:

It is provided with in hermetic container

Storage carries out the cylinder of reciprocating piston；

Be configured at described cylinder opening, there is the discharge arranged in the way of surrounding tap The valve plate of valve seat；With

The dump valve of tap described in opening and closing,

Described dump valve includes the arm carrying out action when opening/closing portion and described opening/closing portion opening and closing,

At least region abutted with described valve plate at the described arm of described dump valve has synthesis Resin molding.

5. a coolant compressor, it is characterised in that:

Include in hermetic container:

Storage carries out the cylinder of reciprocating piston；

Be configured at described cylinder opening, there is the suction arranged in the way of surrounding inlet hole The valve plate of valve seat；With

The inlet valve of inlet hole described in opening and closing,

Described inlet valve includes the arm carrying out action when opening/closing portion and described opening/closing portion opening and closing,

The region relative with the described opening/closing portion of described inlet valve or described suction at described valve plate The described opening/closing portion of valve has the Surface Treated Films containing synthetic resin.

6. coolant compressor as claimed in claim 5, it is characterised in that:

At the relative region of the fixed part with described inlet valve of described valve plate or described inlet valve In described fixed part, any one has the Surface Treated Films containing synthetic resin.

7. coolant compressor as claimed in claim 5, it is characterised in that:

Described valve plate is relative at the described arm with described inlet valve with described opening/closing portion opposition side Region be formed with recess.

8. coolant compressor as claimed in claim 1, it is characterised in that:

The region relative with the described opening/closing portion of described inlet valve or described suction at described valve plate The described opening/closing portion of valve has synthetic resin film.

9. coolant compressor as claimed in claim 1, it is characterised in that:

Described synthetic resin film is with fluorubber as binding agent, containing fluororesin in kollag.

10. coolant compressor as claimed in claim 2, it is characterised in that:

Described synthetic resin film is with fluorubber as binding agent, containing fluororesin in kollag.

11. coolant compressors as claimed in claim 3, it is characterised in that:

Described synthetic resin film is with fluorubber as binding agent, containing fluororesin in kollag.

12. coolant compressors as claimed in claim 4, it is characterised in that:

Described synthetic resin film is with fluorubber as binding agent, containing fluororesin in kollag.

13. coolant compressors as described in any one in Claims 1 to 4 and 9～12, It is characterized in that:

The total film thickness of described synthetic resin film is 1 μm～100 μm.

14. 1 kinds of refrigerating plants, it is characterised in that including:

Pipe arrangement is utilized by the coolant compressor described in any one in claim 1～12 and to dissipate Hot device, decompressor, heat extractor connect to ring-type refrigerant loop.