CN1806122A - Hermetic compressor - Google Patents

Hermetic compressor Download PDF

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Publication number
CN1806122A
CN1806122A CNA2005800000602A CN200580000060A CN1806122A CN 1806122 A CN1806122 A CN 1806122A CN A2005800000602 A CNA2005800000602 A CN A2005800000602A CN 200580000060 A CN200580000060 A CN 200580000060A CN 1806122 A CN1806122 A CN 1806122A
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CN
China
Prior art keywords
reed
exhaust
spring
base
baffle plate
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Granted
Application number
CNA2005800000602A
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Chinese (zh)
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CN100419261C (en
Inventor
山冈正和
松本刚
井出照正
丸山富美夫
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Publication of CN1806122A publication Critical patent/CN1806122A/en
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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
    • 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
    • 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
    • F04B39/0005—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 adaptations of pistons
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/18—Leaf springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F25B31/02—Compressor arrangements of motor-compressor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S251/00—Valves and valve actuation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S251/00—Valves and valve actuation
    • Y10S251/902—Springs employed as valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps
    • Y10S417/902—Hermetically sealed motor pump unit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7879—Resilient material valve
    • Y10T137/7888—With valve member flexing about securement
    • Y10T137/7891—Flap or reed

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compressor (AREA)

Abstract

A hermetic compressor that has a pedestal of the valve plate to which a discharge reed equipped with an opening/closing part and discharge reed holding part, a spring reed equipped with a movable part and spring reed holding part, and a stopper equipped with a regulation part and stopper holding part, are fixed in this sequence, and also has a discharge valve device in which the spring reed is shaped in a substantially crank-like form is provided. A space is formed between the movable part of the spring reed and the opening/closing part of the discharge reed, and both are not adsorbed each other, thus preventing a delay in closing of the discharge reed. This makeup suppresses a decrease in freezing capacity of a fridge-freezer device and the like, thus implementing higher efficiency.

Description

Hermetic compressor
Technical field
The present invention relates to a kind of hermetic compressor that is used for refrigerator etc.
Background technique
The example of the hermetic compressor that the Japanese Patent Laid Open Publication application discloses a kind of routine 2002-195160 number (below be called " compressor ").That is, be equipped with the compressor of discharge valve apparatus, the loss of this device when reducing operating noise and On/Off exhaust reed is to improve energy efficiency.
Below, with reference to Fig. 7 to 10, this conventional compressor is described.Fig. 7 is the sectional view of conventional compressor; Fig. 8 is the plan view of conventional compressor; Fig. 9 is the side sectional view of the discharge valve apparatus of conventional compressor; Figure 10 is the exploded view of the discharge valve apparatus of conventional compressor.
Gastight container (below be called " container ") 1 is equipped with outlet pipe 2 and sucking pipe 3, all is connected with a cooling system (not shown); Electrical components 7 is housed in it, and these parts are at its bottom storage organic oil 4, and by stator 5 and rotor 6, and are made up of electrical components 7 rotation compressor driven structures 8.Be full of refrigeration agent 9 in the container 1.
Next, the chief component to compressing mechanism 8 is described.
Cylinder 10 is equipped with columniform compression chamber 11 and the bearing portion 12 of being essentially.In the both sides of valve plate 13, being equipped with discharge valve apparatus 14, with closed compression chamber 11 back to a side that contacts with cylinder 10.End cap 15 covers on the valve plate 13.One end opening of inhaling silencer 16 is in container 1, and the other end of silencing apparatus 16 is connected with the inside of compression chamber 11.Bent axle 17 has main shaft 18 and eccentric part 19, and is pivotally supported by the bearing portion 12 of cylinder, and rotor 6 is pressed into and cooperates and be fixed thereon.Piston 20 can back and forth embed in the compression chamber 11 slippingly, and is connected with eccentric part 19 by connecting rod 21.
Next, the discharge valve apparatus 14 that is provided in the compressing mechanism 8 is described.
Valve plate 13 has groove 22 in the side back to cylinder.Be equipped with the exhaust port 23 that is connected with cylinder 10 in the groove 22, form with around the valve block 24 of exhaust port 23 and be formed at basically and valve block 24 conplane bases 25.Exhaust reed 26, spring reed 27, and baffle plate 28 be fixed on successively on the base 25 by rivet 29.
Exhaust reed 26 is made of the flat spring parts of a ligule, and it is equipped with exhaust reed standing part 30 being fixed on the base 25, and ON/OFF part 31 is with On/Off valve block 24.
Spring reed 27 is made of the flat spring parts of a ligule, and it is equipped with the spring reed standing part 32 that is fixed on the base 25, and active part 33, and the position has curved section 34 near the root of the ON/OFF part 31 of exhaust reed 26.
Baffle plate 28 is equipped with the baffle plate standing part 35 that is fixed on the base 25, and the control section 36 of control exhaust reed 26 actions.The shape on one side of the control section 36 of baffle plate 28 with comprise that the plane of valve block 24 and base 25 is substantially parallel.The active part 33 of spring reed 27 is adjusted by the bend angle of curved section 34, thus the ON/OFF part 31 of active part 33 and exhaust reed 26 and with the control section 36 of baffle plate 28 between the given gap of formation.
Below, the running of compressor as constituted above is described.
Give electrical components 7 power supplies causing rotor 6 rotations, and rotation drive bent axle 17.In the case, the off-centre of eccentric part 19 rotatablely moves and passes to piston 20 by connecting rod 21, and as a result of, piston 20 moves reciprocatingly in compression chamber 11.
Along with the to-and-fro motion of piston 20, the refrigeration agent 9 in the container 1 is drawn in the compression chamber 11 by inhaling silencer 16, and low pressure refrigerant 9 is flowed in the container 1 through sucking pipe 3 by the cooling system (not shown) simultaneously.The refrigeration agent 9 that sucks in the compression chamber 11 is compressed, and is discharged in the end cap 15 through the discharge valve apparatus 14 on the valve plate 13.And the pressurized gas that are discharged in the end cap 15 are discharged in the cooling system (not shown) through outlet pipe 2.
Yet, in the structure of above-mentioned routine, can be observed following phenomenon sometimes.Just, when compressor just starts, compare, in the quite a long time, can remain on the state of low refrigerating capacity with its intrinsic refrigerating capacity.This mechanism can be described by following performance evaluation to exhaust reed 26 and spring reed 27.
When starting the compressor of this low refrigerating capacity phenomenon of meeting generation, machine oil 4 is returned by the refrigeration cycle (not shown) with refrigeration agent 9.Because machine oil 4 is compressed and discharges with refrigeration agent 9, caused a large amount of machine oil 4 to be got involved between exhaust reed 26 and the spring reed 27.
And compressor is under high pressure air-breathing usually when starting, and compression and the higher refrigeration agent 9 of emission intensity, till reducing pressure in container 1.Therefore, a heavy load is applied on the ON/OFF part 31 of exhaust reed.Simultaneously, the displacement of the ON/OFF part 31 of exhaust reed 26 is subjected to the control of the control section 36 of baffle plate 28.As a result of, the ON/OFF part 31 of exhaust reed 26 is owing to the effect of high-density refrigerant 9 is squeezed in consumingly on the active part 33 of the spring reed 27 between the control section 36 of ON/OFF part 31 and baffle plate 28.
Then, because the effect of machine oil 4, above-mentioned very big extrusion load causes the ON/OFF part 31 of exhaust reed 26 and the active part 33 of spring reed 27 to produce absorption.Like this, exhaust reed 26 and spring reed 27 are combined as a whole, and carry out the On/Off operation as the exhaust reed of same thickening.
Here, the active part 33 of spring reed 27 produces crooked to the opening direction of exhaust reed 26 at curved section 34 places, and as a result of, spring force acts on the direction opposite with the closing direction of exhaust reed 26.Like this, exhaust reed 26 is pulled to the direction of its unlatching, thereby has postponed the shut-in time.
Therefore, when piston 20 in compression chamber 11 by top dead center and after entering suction stroke, the time that exhaust reed 26 is held open is elongated.Simultaneously, one high-pressure refrigerant flow back in the compression chamber 11, thereby is reduced by the actual volume that piston arranges, and causes the phenomenon of low refrigerating capacity to take place.
When the phenomenon of this low refrigerating capacity took place, the efficient of compressor reduced and power consumpiton increases, and had caused the problem that the refrigerating capacity of the refrigerator that loads this compressor weakens simultaneously.
Summary of the invention
The invention provides a kind of hermetic compressor, a side of its medi-spring reed is the form of crank-like basically, and the position corresponding to exhaust reed ON/OFF part is formed with the gap between spring reed and exhaust reed and baffle plate.
This structure has prevented exhaust reed and spring reed owing to the absorption of intervention machine oil generation wherein and the delay that exhaust reed is closed, thereby a kind of high efficiency hermetic compressor is provided.
Description of drawings
Fig. 1 is the sectional view of the compressor that provides according to embodiment of the present invention.
Fig. 2 is the plan view of the compressor that provides according to embodiment of the present invention.
Fig. 3 is the side sectional view of discharge valve apparatus when closing that provides according to embodiment of the present invention.
Fig. 4 is the exploded view of the discharge valve apparatus that provides according to embodiment of the present invention.
Fig. 5 is the side sectional view of discharge valve apparatus when opening that provides according to embodiment of the present invention.
Fig. 6 is the spring characteristic curve figure of the discharge valve apparatus that provides according to embodiment of the present invention.
Fig. 7 is the sectional view of conventional compressor.
Fig. 8 is the plan view of conventional compressor.
Fig. 9 is the side sectional view of the discharge valve apparatus of conventional compressor.
Figure 10 is the exploded view of the discharge valve apparatus of conventional compressor.
Embodiment
The present invention relates to a kind of compressor, it comprises: a compressing mechanism; An electrical components is used to rotate drive compression mechanism; And a container, be used to hold compressing mechanism and electrical components, and store machine oil.Compressing mechanism has a piston, and a cylinder, piston can to-and-fro motion in cylinder, and a valve plate, the open end of its sealing cylinder and be equipped with a discharge valve apparatus in the side back to cylinder.The discharge valve apparatus that is formed on the valve plate has an exhaust port that is connected with cylinder internal, and one is provided in the outer valve block of exhaust port, and one be formed at basically with the same plane of valve block on base.In discharge valve apparatus, an exhaust reed, it is made of the flat spring parts, and is equipped with the ON/OFF part with the On/Off exhaust port, and the exhaust reed standing part is to be fixed on the base; A spring reed, it is made of the flat spring parts, and is equipped with active part, and spring reed standing part is to be fixed on the base; And a baffle plate, it is equipped with control section, reaches the baffle plate standing part to be fixed on the base, and fixed order is on base according to this.And a side of spring reed is the shape of crank-like basically, and between spring reed and exhaust reed and baffle plate, the ON/OFF position partly corresponding to exhaust reed is formed with the gap.Like this, for example when starting, machine oil is got involved between exhaust reed and the spring reed, even thereby have an excessive load to be applied on the exhaust reed, still be formed with the space in the ON/OFF of the active part of spring reed and exhaust reed between partly.Because active part and ON/OFF part no longer produce absorption each other, this structure has prevented the delay that exhaust reed is closed, thereby a kind of compressor that refrigerating capacity reduces and have energy-efficient that suppresses is provided.
In addition, in the compressor that the present invention provides, the curved section of exhaust reed is at a side direction valve block one lateral bending song near the ON/OFF part.Like this, stably exist a ON/OFF partly to be pressed in active force on the valve block, thereby the sealability between the ON/OFF of exhaust reed part and the valve block is improved, and then improved energy efficiency exhaust reed.
Simultaneously, in the compressor that the present invention provides, the curved section of exhaust reed is arranged on the recessed part of cutting in a place that forms between valve block and base.Like this, can stablize the inclination amount of exhaust reed, thereby can stablize and provide a ON/OFF partly to be pressed in active force on the valve block exhaust reed.Therefore, the sealability between the ON/OFF of exhaust reed part and the valve block is improved, and then has improved energy efficiency.
In addition, in the compressor that the present invention provides, on the control section of baffle plate, be formed with a contact segment that bends towards a side of spring reed.Like this, when the displacement of exhaust reed is subjected to the control of control section of baffle plate, supporting way to the active part of spring reed becomes " center impeller " by " cantilever ", so the spring force of the active part of spring reed can more effectively be utilized simultaneously.This allows segmentation to set required spring performance.Therefore, all have best spring performance in low circulating load zone and high circulating load zone, and then improved energy efficiency.
Below, referring to figs. 1 through 6, the embodiment of the compressor that provides according to the present invention is described in detail.Here, accompanying drawing is schematically, does not show correctly that by size position separately concerns.
Embodiment
Container 101 is equipped with outlet pipe 102 and sucking pipe 103, all is connected with a cooling system (not shown); At its bottom storage organic oil 104; Electrical components 107 is housed in it, and this electrical components comprises stator 105 and rotor 106, and by electrical components 107 rotation compressor driven structures 108.Be full of refrigeration agent 109 in the container 101.
Because environmental problem in recent years, preferably, refrigeration agent 109 is irrelevant with Chlorofluorocarbons (CFCs) (CFCs), and is to use the refrigeration agent as R134a and R600a.
Next, the chief component to compressing mechanism 108 is described.
Cylinder 110 is equipped with columniform compression chamber 111 and the bearing portion 112 of being essentially.In the both sides of valve plate 113, being equipped with discharge valve apparatus 114, with closed compression chamber 111 back to a side that contacts with cylinder 110.End cap 115 covers on the valve plate 113.One end opening of inhaling silencer 116 is in container 101, and the other end of silencing apparatus is connected with the inside of compression chamber 111.Bent axle 117 has main shaft 118 and eccentric part 119, and is pivotally supported by the bearing portion 112 of cylinder 110, and is pressed into and is matched with in the stator 105 and fixing.Piston 120 can back and forth embed in the compression chamber 111 slippingly, and is connected with eccentric part 119 by connecting rod 121.
Next, the discharge valve apparatus 114 that is provided in the compressing mechanism 108 is described.Valve plate 113 has groove 122, provide the exhaust port 123 that is connected with cylinder 110 in it, form with around the valve block 124 of exhaust port 123 and be formed at basically with valve block 124 same planes on base 125.
Exhaust reed 126, spring reed 127, and baffle plate 128 be fixed on successively on the base 125 by rivet 129.Exhaust reed 126 is made of the flat spring parts of a ligule, and it is equipped with exhaust reed standing part 130 being fixed on the base 125, and ON/OFF part 131 is with On/Off valve block 124.
Spring reed 127 is made of the flat spring parts of a ligule, it is equipped with spring reed standing part 132 to be fixed on the base 125, and active part 133, and, form a shape that is essentially crank-like by being provided in first curved section 134 and second curved section 135 on the active part 133.
And first curved section 134 is arranged near the position of root of the active part 133 of spring reed 127, and second curved section 135 is arranged on the active part 133 of spring reed 127.
Baffle plate 128 is equipped with baffle plate standing part 136 to be fixed on the base 125, reaches the action of control section 137 with control exhaust reed 126.The shape on one side of control section 137 with comprise that the plane of valve block 124 and base 125 is substantially parallel.
To the setting that each curved portions angle is carried out, make spring reed 127 active part 133 the ON/OFF part 131 of active part and exhaust reed 126 and and the control section 137 of baffle plate 128 between all have the gap.
The exhaust reed curved section 138 of exhaust reed 126 is at a lateral bending song of a side direction valve block 124 of close ON/OFF part 131.
The recessed part 139 of cutting that is deeper than base 125 is formed between valve block 124 and the base 125, and exhaust reed curved section 138 is arranged on recessed cutting in the part 139.
On the control section 137 of baffle plate 128, be formed with the contact segment 140 of a side that bends towards spring reed 127, and the shape on one side of contact segment 140 with comprise that the plane of valve block 124 and base 125 is substantially parallel.
To the running and the operation of compressor are described as constituted above.
Give electrical components 107 power supplies causing rotor 106 rotations, and rotation drive bent axle 117.In the case, the off-centre of eccentric part 119 rotatablely moves and passes to piston 120 by connecting rod 121, and as a result of, piston 120 moves reciprocatingly in compression chamber 111.
Along with the to-and-fro motion of piston 120, the refrigeration agent 109 in the container 101 is drawn in the compression chamber 111 by inhaling silencer 116, and low pressure refrigerant 109 is flowed in the container 101 through sucking pipe 103 by the cooling system (not shown) simultaneously.
The refrigeration agent 109 that sucks in the compression chamber 111 is compressed, and is discharged in the end cap 115 through the discharge valve apparatus 114 on the valve plate 113.And the pressurized gas that are discharged in the end cap 115 are discharged in the cooling system (not shown) through outlet pipe 102.
Here, when starting compressor, machine oil 104 is returned by the refrigeration cycle (not shown) with refrigeration agent 109.Because machine oil 104 is compressed and discharges with refrigeration agent 109, caused a large amount of machine oil 104 to be got involved between exhaust reed 126 and the spring reed 127.
And compressor is under high pressure air-breathing usually when starting, and compression and the higher refrigeration agent 109 of emission intensity, till reducing pressure in container 101.Therefore, a heavy load is applied on the ON/OFF part 131 of exhaust reed 126.
Simultaneously, the displacement of the ON/OFF part 131 of exhaust reed 126 is subjected to the control of the control section 137 of baffle plate 128.Therefore, the ON/OFF part 131 of exhaust reed 126 is owing to the effect of high-density refrigerant 109 is squeezed in consumingly on the active part 133 of the spring reed 127 between the control section 137 of ON/OFF part 131 and baffle plate 128.
This active part 133 that causes the ON/OFF part 131 of exhaust reed 126 and spring reed 127 is owing to machine oil 104 produces absorption.
Yet, on the active part 133 of spring reed 127, be formed with first and second curved sections, therefore between the active part 133 of the ON/OFF part 131 of exhaust reed 126 and spring reed 127, formed interval 141, as shown in Figure 5.Therefore, the active part 133 of spring reed 127 is able to separate immediately on the ON/OFF part 131 of exhaust reed 126.In other words, absorption no longer continues, and spring reed 127 can not become one with exhaust reed 126 and operate, and has therefore prevented to close delay.
Therefore, prevented to flow back into the phenomenon of the low refrigerating capacity that causes in the compression chamber 111, thereby a kind of compressor with energy-efficient is provided owing to high-pressure refrigerant.
Simultaneously, the exhaust reed curved section 138 of exhaust reed 126 is near one side of ON/OFF part 131 lateral bending song to valve block 124, thereby produces an ON/OFF part 131 with exhaust reed 126 and be pressed in active force on the valve block 124.
This active force prevents that the ON/OFF part 131 of exhaust reed 126 is unsteady on valve block 124, thereby has further kept favourable sealing, thereby a kind of compressor with energy-efficient is provided.
In addition, be formed between valve block 124 and the base 125, and exhaust reed curved section 138 is arranged on recessed cutting in the part 139, thereby prevents the recessed extruding that part 139 is subjected to base 125 and the spring force of spring reed 127 of cutting than the base 125 dark recessed parts 139 of cutting.Therefore, the inclination amount of the ON/OFF part 131 of exhaust reed 126 can be stablized, thereby a kind of compressor with stable refrigerating capacity is provided.
In addition, according to this embodiment, be formed with the contact segment 140 of a side that bends towards spring reed 127 on the control section 137 of baffle plate 128, thereby when spring reed 127 touched contact segment 140, exhaust reed 126 can continue displacement.
That is to say that the spring performance of exhaust reed 126 has two flex points as shown in Figure 6, therefore exist three sections spring forces.
In Fig. 6, horizontal axis is represented displacement; Vertical shaft is represented spring force." A " and " B " represents first and second flex points respectively.Here, first flex point is the point of the ON/OFF part 131 of exhaust reed 126 when touching the active part 133 of spring reed 127, and play second flex point from this point, exist the ON/OFF part 131 of an exhaust reed 126 and the synthetic spring force of the active part 133 of spring reed 127.
Second flex point is the point of the active part 133 of spring reed 127 when touching the contact segment 140 of baffle plate 128, and lights from this, and the supporting way of spring reed becomes " center impeller " by " cantilever ", and as a result of, spring force further improves.
As described above, owing to have two flex points, obtained three sections spring performances, as a result of, when exhaust reed 126 opening degrees are very big, produce very big spring force, thereby cause exhaust reed 126 quick closedowns.
Like this, even in the very big high circulating load zone of exhaust reed 126 opening degrees, because the short delay that exhaust reed 126 closes in the closed procedure the invention provides a kind of compressor with energy-efficient.
Industrial applicibility
Because even the very of short duration delay in the exhaust reed closing process is to relatively large Internal circulating load, the present invention also can provide the compressor with energy-efficient. In addition, this compression Machine can use various types of cold-producing mediums, so it also can be used for for example using the CO2 cold-producing medium Refrigeration and the apparatus of air conditioning.

Claims (4)

1. hermetic compressor, it comprises:
Compressing mechanism;
Electrical components is used for rotation and drives described compressing mechanism; And
Gastight container is used to hold described compressing mechanism and described electrical components, and stores machine oil, and wherein said compressing mechanism comprises:
Piston;
Cylinder, piston is to-and-fro motion therein; And
Valve plate, it seals the open end of described cylinder, and has discharge valve apparatus in the side back to cylinder, and wherein said discharge valve apparatus is formed with on valve plate:
The exhaust port that is connected with described cylinder internal;
Be provided in the outer valve block of described exhaust port; And
Be formed at basically with the same plane of described valve block on base, wherein said base is fixed with respectively according to following order:
Exhaust reed, it is made of the flat spring parts, have the ON/OFF part with the described exhaust port of On/Off, and the exhaust reed standing part is to be fixed on the described base;
The spring reed, it is made of the flat spring parts, has active part, and spring reed standing part is to be fixed on the described base; And
Baffle plate, it has control section, and the baffle plate standing part to be being fixed on the described base, and, one side of its medi-spring reed is the shape of crank-like basically, and all is formed with the gap corresponding to the position of the ON/OFF part of exhaust reed between the two at spring reed and exhaust reed and baffle plate.
2. hermetic compressor as claimed in claim 1, wherein said exhaust reed near the curved part office of the exhaust reed of ON/OFF part to valve block one lateral bending song.
3. hermetic compressor as claimed in claim 2, wherein the curved section of exhaust reed is arranged on the recessed part place of cutting that is formed between valve block and base.
4. as each described hermetic compressor in the claim 1 to 3, wherein the location bending near the spring reed is formed with contact segment on the control section of baffle plate.
CNB2005800000602A 2004-09-07 2005-03-11 Hermetic compressor Expired - Fee Related CN100419261C (en)

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JP2004259243A JP2006077579A (en) 2004-09-07 2004-09-07 Hermetic compressor
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CN100419261C CN100419261C (en) 2008-09-17

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EP (1) EP1802869A1 (en)
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WO (1) WO2006027864A1 (en)

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KR100723104B1 (en) 2007-05-30
EP1802869A1 (en) 2007-07-04
KR20060038911A (en) 2006-05-04
CN100419261C (en) 2008-09-17
WO2006027864A1 (en) 2006-03-16
US20080202613A1 (en) 2008-08-28
JP2006077579A (en) 2006-03-23

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