CN207064239U - Compression mechanism and rotary compressor - Google Patents

Abstract

The utility model proposes a kind of compression mechanism and rotary compressor, wherein, compression mechanism includes：Cylinder assembly, including at least one cylinder, eccentric rotary piston is correspondingly arranged in the cavity of each cylinder；At least one support component, it is equipped with each cylinder assembly, and closed cavity, wherein, madial wall, the lateral wall of eccentric rotary piston and the sealing surface of support component of cavity enclose to form at least one working chamber, and each working chamber offers at least one steam vent, the volume sum V of all working chamber, with the area of section sum S of all steam vents, meet：60mm≤V/S≤140mm.Pass through the technical solution of the utility model, on the one hand, the exhaust resistance loss of compression mechanism can be reduced, on the other hand, the operational efficiency of compression mechanism can be lifted, and reduce caused noise in compression mechanism running.

Description

Compression mechanism and rotary compressor

Technical field

Compressor field is the utility model is related to, in particular to a kind of compression mechanism and a kind of rotary compressor.

Background technology

In correlation technique, rotary compressor increasingly tends to miniaturization and high speed development, and rated speed is from common 60rps increase to 90rps and more than, maximum speed from 120rps rise to 180rps and more than.Rotating speed is higher, unit interval row The gas gone out is more, and exhaust flow rate is higher.Because exhaust resistance loss and exhaust flow rate are lost into quadratic relation, exhaust resistance The ratio for accounting for total energy consumption increased dramatically with the increase of rotating speed, cause compressor efficiency reduction.And due to exhaust flow rate Increase, cause pneumatic noise to increase.

Increase exhaust sectional area is the effective way for reducing compressor air-discharging drag losses, still, is vented the increasing of sectional area Add the increase and the reduction of volumetric efficiency that will cause clearance volume, cause the service behaviour for influenceing compressor.

Utility model content

At least one in order to solve the above-mentioned technical problem, a purpose of the present utility model is to provide a kind of compressor Structure.

Another purpose of the present utility model is to provide a kind of rotary compressor.

To achieve these goals, the embodiment of the utility model first aspect proposes a kind of compression mechanism, including：Gas Cylinder component, including at least one cylinder, eccentric rotary piston is correspondingly arranged in the cavity of each cylinder；At least one support group Part, be equipped with each cylinder assembly, and closed cavity, wherein, the madial wall of cavity, the lateral wall of eccentric rotary piston with The sealing surface of support component encloses to form at least one working chamber, and each working chamber offers at least one steam vent, Suo Yougong Make the volume sum V of chamber, the area of section sum S with all steam vents, meet：

In the technical scheme, by by the area of section sum of the volume sum of all working chamber and all steam vents it Between ratio be limited in the number range specified, compression mechanism rotating speed be at a high speed rotate when (be more than or equal to 90rps), on the one hand, the exhaust resistance loss of compression mechanism can be reduced, on the other hand, the operation of compression mechanism can be lifted Efficiency, and reduce caused noise in compression mechanism running.

Wherein, reciprocating motion of the motor of rotary compressor without the rotary motion of rotor to be converted to piston, but Directly rotary-piston is driven to rotate to complete the compression to refrigerant vapour.

Rotary compressor structure be mainly characterized by with eccentric rotor rise piston effect, refrigerant gas is pressed Contracting, rotation bent axle is coaxial with cylinder axis, and eccentric wheel is housed on rotation bent axle, and the thin-walled bullet of high-quality bracing members is housed on eccentric wheel Property sleeve rotor, to form eccentric rotary piston, the madial wall of the side of eccentric rotary piston always with cylinder is in close contact, and is entered And the working chamber of a crescent is formed between the outer surface of eccentric rotary piston and the madial wall of cylinder.

Specifically, when the rated speed of rotary compressor is more than or equal to 90rps, 60mm≤V/S≤140mm, wherein V For the volume sum of all working chamber, S is the area of section sum of all steam vents, constant in existing working chamber structure setting On the premise of, the span of the area of section S by adjusting steam vent, realize the high-speed cruising of compression mechanism.

When rated speed increases to 90rps, to keep exhaust average Mach number M scopes constant, V/S scope strains 120mm≤V/S≤200mm is turned to, and it is higher in view of rotating speed, exhaust is discontinuously bigger to the adverse effect of exhaust, and considers Be more than 90rps situation to rated speed, V/S value should reduce further, it is assumed that three working chamber volumes (9.8 × 10³mm³, 22 × 10³mm³, 48 × 10³mm³) under, and carry out three under corresponding three rotating speeds (90rps/120rps/150rps) Fluid structurecoupling simulation is tieed up to calculate, the results showed that, when V/S scope is 60mm≤V/S≤140mm, the property of rotary compressor Can be higher.

The cross sectional shape of steam vent can be circle, Long Circle, polygon etc..

In addition, the compression mechanism in above-described embodiment provided by the utility model can also have following supplementary technology special Sign：

In the above-mentioned technical solutions, it is preferable that support component includes：Clutch shaft bearing and second bearing, respectively with air cylinder group Two end face outsides fitting of part is set, and end face outside has an axially open of working chamber, and clutch shaft bearing is corresponding with axially open Region form the first sealing surface, the second sealing surface of second bearing corresponding with axially open region formation, wherein, steam vent is opened It is located on the first sealing surface and/or the second sealing surface.

In the technical scheme, by being arranged to support component to include clutch shaft bearing and second bearing, that is, it is being arranged to During single cylinder, clutch shaft bearing and second bearing, clutch shaft bearing area corresponding with axially open are set respectively at the both ends of single cylinder Domain forms the first sealing surface, and second bearing region corresponding with axially open forms the second sealing surface, by the first sealing surface And/or second open up steam vent on sealing surface, the discharge of the compressed gas of single cylinder compressor is realized.

Wherein, clutch shaft bearing is base bearing, and second bearing is supplementary bearing, and steam vent can only have one, be opened in main shaft Hold, it is possibility to have it is multiple, clutch shaft bearing is opened in respectively with second bearing, meeting 60mm≤V/S≤140mm premise Under, by increasing the area of steam vent, realize that compression mechanism raises speed.

Specifically, it is contemplated that the factor such as the offset of eccentric rotary piston and leaving area utilization rate, single steam vent Sectional area can not design excessive, and often a working chamber opens up two or more steam vents, and the sectional area of each steam vent can With it is equal can also be unequal.

For example for single cylinder compression mechanism, the steam vent of two same diameters is opened up on working chamber, is in steam vent During circular hole, in working chamber volume V=10.555 × 10 of compressor³(mm³) when, then there is steam vent is a diameter of to be more than or equal to 4.90×10^-3M, and less than or equal to 7.48 × 10^-3m。

In any of the above-described technical scheme, it is preferable that be more than or equal to 2 in the quantity of cylinder, and multiple cylinders are vertically It is arranged side by side successively, support component also includes：First partition, fitting are arranged between two cylinders of arbitrary neighborhood, any phase Be provided with axially open on two adjacent cylinders and the binding face of first partition, the both sides of first partition respectively with axially open pair The region answered forms the 3rd sealing surface and the 4th sealing surface, wherein, steam vent is opened in the 3rd sealing surface and/or the 4th sealing surface On.

In the technical scheme, cylinder quantity be more than or equal to 2 when, except axial both ends set clutch shaft bearing with Second bearing, between two adjacent cylinders fitting first partition is set, the both sides of first partition respectively with axially open pair The region answered forms the 3rd sealing surface and the 4th sealing surface, by the way that steam vent is opened in into the 3rd sealing surface and/or the 4th closing On face, realize by the function of exhaust in the middle part of compression mechanism.

Wherein, first partition can include two axial directions along eccentric rotary piston and be bonded the first sub-dividing plates and the set Two sub-dividing plates, the parts of compression mechanism comprise at least the clutch shaft bearing for being from top to bottom bonded setting successively, cylinder assembly, second Bearing and the first sound attenuation, wherein, cylinder assembly includes at least two cylinders being arranged side by side vertically, and is arranged on Two sub-dividing plates between two adjacent cylinders, the first sub-dividing plate can open up the exhaust turned on the working chamber of upper cylinder Hole, the second sub-dividing plate can open up the steam vent turned on the working chamber of lower cylinder.

Compression mechanism includes at least two cylinders, and compression mechanism surrounds at least two working chambers, and each working chamber is designed with Steam vent, separated by dividing plate between each working chamber, the volume of each working chamber can with it is equal can also be unequal, due to dynamic balance Characteristic is good, can more smoothly run at high speed, so as to realize twin-tub or multi-cylinder pressure texture in high rotating speed compressor Application.

In any of the above-described technical scheme, it is preferable that steam vent is opened on the madial wall of cavity.

In the technical scheme, by the way that steam vent is opened on the madial wall of cavity, with being opened in bearing and dividing plate On steam vent be that axial steam vent is compared, can be further by opening up steam vent while laser intensity is ensured Increase leaving area.

In any of the above-described technical scheme, it is preferable that cylinder assembly also includes：Slide plate component, including slide plate and elastomer, Slide plate is axially disposed in cavity, and one end of slide plate is bonded with the lateral wall of eccentric rotary piston, and working chamber is divided into First working chamber and the second working chamber, steam vent are arranged in the first working chamber, and air admission hole, slide plate are provided with the second working chamber The other end and one end of elastomer connect, the other end of elastomer is fixed on specified location, wherein, turn in eccentric rotary piston When dynamic, elastomer drives slide plate to move back and forth by elastic deformation, so that slide plate opposite exterior lateral sides wall slides, and realizes to the first work The gas for making intracavitary is compressed.

In the technical scheme, the slide plate in cylinder chamber body under spring force, make its one end always with The lateral wall of offset piston is in contact fitting, so as to which crescent working chamber is divided into two not connected chambers of A, B, its In, A, B chamber are respectively induction chamber and compression exhaust room, and the cumulative volume of A, B chamber is the volume of working chamber, in cylindrical cylinder Inlet and outlet mouth is offered on madial wall.

In any of the above-described technical scheme, it is preferable that also include：Air bleeding valve, it is arranged in steam vent, wherein, in gas Pressure when being more than drain pressure, exhaust valve opening, gas is discharged out of working chamber.

In the technical scheme, by setting air bleeding valve, when detecting that drain pressure reaches default threshold pressure, pass through Exhaust valve plate top is opened, realizes discharge of the compressed gas out of working chamber.

In any of the above-described technical scheme, it is preferable that when steam vent is opened on the first sealing surface, compression mechanism is also wrapped Include：Muffler, it is arranged on end face of the clutch shaft bearing away from second bearing, muffler is provided with silencing cavity, and silencing cavity can lead to Steam vent is crossed to connect with working chamber, wherein, gas drains into silencing cavity from working chamber along steam vent, passes through silencing cavity noise reduction heel row Go out.

In the technical scheme, by setting muffler, muffler is provided with silencing cavity, and gas is from working chamber along steam vent Silencing cavity is drained into, by being discharged after silencing cavity noise reduction, exhaust noise is reduced, improves the performance of compression mechanism.

Specifically, compression mechanism includes rotation bent axle, the clutch shaft bearing supported and second bearing is coordinated with rotation bent axle, is set Muffler above clutch shaft bearing, the cylinder that is located between clutch shaft bearing and second bearing, revolved round the sun in the cavity of cylinder Eccentric rotary piston, the slide plate coordinated with piston, act on slide plate the spring for making slide plate be adjacent to piston, working chamber by cylinder, Clutch shaft bearing, second bearing and piston are surrounded, and steam vent is opened on clutch shaft bearing, and the gases at high pressure for compressing completion pass through exhaust Hole discharge the inner chamber of muffler from working chamber, then is discharged to the inner chamber of housing by the inner chamber of muffler.

In any of the above-described technical scheme, it is preferable that cylinder assembly also includes：At least one second partition, revolved along bias Being axially set in cavity of plug is turned a work, cavity is separated at least two sub- inner chambers by least one second partition, any one Intracavitary is provided with eccentric rotary piston in son, to form at least two working chambers.

In the technical scheme, at least one second partition is set by being axially arranged in cavity, at least one Cavity is separated at least two sub- inner chambers by two dividing plates, eccentric rotary piston is provided with any one sub- inner chamber, with further Lift the performance of compression mechanism.

In any of the above-described technical scheme, it is preferable that when steam vent is variable cross-section hole, the area of section of steam vent is most The area of small bore.

In any of the above-described technical scheme, it is preferable that in cavity be circular cylindrical cavity, eccentric rotary piston is living for cylinder During plug, when steam vent is uiform section circular hole, a diameter of d of circular cylindrical cavity₁, a diameter of d of cylindrical piston₂, circular cylindrical cavity Height be h, the aperture of uiform section circular hole is d₃, V and S satisfactions：

In the technical scheme, the internal diameter of cylinder is d₁, the external diameter of piston is d₂, the height of cylinder is h, the body of working chamber Product is equal toA diameter of d of steam vent₃, the sectional area of steam vent is equal toRealize in cavity For circular cylindrical cavity, when eccentric rotary piston is cylindrical piston, when steam vent is uiform section circular hole, cavity volume and section face Long-pending determination.

For example, by taking single cylinder compression mechanism as an example, the internal diameter d of cylinder₁For 46mm, the outside diameter d of eccentric rotary piston₂For 38mm, the height of cylinder 10 are that h is 20mm, working chamber volume V=10.555 × 10 of compressor³(mm³)。

According to 60mm≤V/S≤140mm, the area of section S that steam vent is calculated is 75.39mm²≤S≤ 175.92mm², the diameter d of steam vent₃ 9.80mm≤d₃Small, performance is lost in≤14.97mm, now compression mechanism exhaust resistance It is high.

In any of the above-described technical scheme, it is preferable that in V >=25000mm³When, V and S meets：

In the technical scheme, it is more than or equal to 25000mm in all working cavity volume³When, due to rotary compressor The rated speed of compression mechanism is hardly higher than more than 150rps, and (volume because of working chamber is bigger, reliability at high speed It is more difficult to ensure), and the area that steam vent is cut is larger and be not easy to open up steam vent, V/S scope, which can be reduced into, to be more than or waits In 80mm, and it is less than or equal to 140mm.

In any of the above-described technical scheme, it is preferable that in V≤15000mm³When, V and S meets：

In the technical scheme, the volume of all working chamber is less than or equal to 15000mm³When, due to rotary compressor The rated speed of compression mechanism is likely to be higher than more than 150rps, and (because the volume of working chamber is smaller, compressor is at high speed Operational reliability is higher), V/S scope can be reduced into more than or equal to 60mm, and is less than or equal to 120mm.

In any of the above-described technical scheme, it is preferable that when gas is R410A, drain pressure 2.542MPa, gas exists The velocity of sound under exhaust condition is 197m/s；When gas is R290, drain pressure 1.445MPa, gas is under exhaust condition The velocity of sound is 250m/s；When gas is R32, drain pressure 2.620MPa, the velocity of sound of the gas under exhaust condition is 243m/s.

In the technical scheme, for compressor, swept volume is bigger, and rotating speed is higher, and the velocity of sound of gas is smaller, institute Need the sectional area of steam vent bigger, by introducing dimensionless group --- exhaust average Mach number M is described between this Relation, i.e.,：

Wherein V (mm³) be all working chamber volume sum, S (mm²) be all steam vents area of section sum, f (rps) it is the rated speed of compressor, C (m/s) is the velocity of sound under exhaust condition, is only referred to when exhaust average Mach number M is in When determining scope, the performance of compressor just can be optimal.

The embodiment of the utility model second aspect proposes a kind of rotary compressor, including：Compressor housing；It is bent Axle, it is arranged in compression case body；Drive mechanism, it is arranged in compression case body, drive component includes the stator for coordinating assembling With rotor, one end of rotor and bent axle is arranged connection；Compression mechanism as described in the utility model any one of first aspect, set In in compression case body, and the other end of bent axle is connected to axial arranging of the drive mechanism along bent axle, compression mechanism.

In the technical scheme, rotary compressor can be flexibly set as swing rotary compressor or rolling Rotary compressor in the form of piston, drive mechanism can be flexibly set as inner rotor type motor or external rotor electric machine.

Additional aspect and advantage of the present utility model will become obvious in following description section, or new by this practicality The practice of type is recognized.

Brief description of the drawings

Of the present utility model above-mentioned and/or additional aspect and advantage will in the description from combination accompanying drawings below to embodiment Become obvious and be readily appreciated that, wherein：

Fig. 1 shows the structural representation of the rotary compressor according to one embodiment of the present utility model；

Fig. 2 shows the cross section structure of the working chamber cross section according to the compression mechanism of one embodiment of the present utility model Schematic diagram；

Fig. 3 shows the song between refrigerating efficiency and V/S according to the compression mechanism of one embodiment of the present utility model Line graph of a relation.

Wherein, the corresponding relation in Fig. 1 and Fig. 2 between reference and component names is：

102 cylinders, 104 eccentric rotary pistons, 106 working chambers, 108 steam vents, 110 clutch shaft bearings, 112 second bearings, 114 slide plates, 116 elastomers, 118 air bleeding valves, 120 mufflers, 122 compressor housings, 124 bent axles, 126 rotors, 128 stators.

Embodiment

In order to be more clearly understood that above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the accompanying drawings and tool The utility model is further described in detail body embodiment.It should be noted that in the case where not conflicting, this Shen The feature in embodiment and embodiment please can be mutually combined.

Many details are elaborated in the following description in order to fully understand the utility model, still, this practicality New to be different from other modes described here using other to implement, therefore, the scope of protection of the utility model is simultaneously Do not limited by following public specific embodiment.

Compression mechanism referring to Fig. 1 to Fig. 3 descriptions according to some embodiments of the utility model.

As shown in the figure shown in 1 and Fig. 2, according to the compression mechanism of embodiment of the present utility model, including：Cylinder assembly, bag At least one cylinder 102 is included, eccentric rotary piston 104 is correspondingly arranged in the cavity of each cylinder 102；At least one support group Part, be equipped with each component of cylinder 102, and closed cavity, wherein, the madial wall of cavity, eccentric rotary piston 104 it is outer The sealing surface of side wall and support component encloses to form at least one working chamber 106, and each working chamber 106 offers at least one row Stomata 108, the volume sum V of all working chamber 106, the area of section sum S with all steam vents 108, meet：

In this embodiment, by by the area of section of the volume sum of all working chamber 106 and all steam vents 108 it Ratio between and is limited in the number range specified, and (is more than or equal to when the rotating speed of compression mechanism is in and rotated at a high speed 90rps), on the one hand, the exhaust resistance loss of compression mechanism can be reduced, on the other hand, the operation of compression mechanism can be lifted Efficiency, and reduce caused noise in compression mechanism running.

Wherein, reciprocating motion of the motor of rotary compressor without the rotary motion of rotor 126 to be converted to piston, and It is that direct drive rotary-piston rotates to complete the compression to refrigerant vapour.

Rotary compressor structure is mainly characterized by being acted on offset piston, and refrigerant gas is compressed, rotation Bent axle 124 is coaxial with the axle of cylinder 102, and eccentric wheel is housed on rotation bent axle 124, and the thin-walled of high-quality bracing members is housed on eccentric wheel Resilient sleeve, to form eccentric rotary piston 104, the side of eccentric rotary piston 104 is always close with the madial wall of cylinder 102 Contact, and then the working chamber of a crescent is formed between the madial wall of the outer surface of eccentric rotary piston 104 and cylinder 102 106。

Specifically, when the rated speed of rotary compressor is more than or equal to 90rps, 60mm≤V/S≤140mm, wherein V For the volume sum of all working chamber 106, S is the area of section sum of all steam vents 108, in the existing knot of working chamber 106 Structure set it is constant on the premise of, the span of the area of section S by adjusting steam vent 108, realize the high speed of compression mechanism Operation.

As shown in figure 3, the curve between the refrigerating efficiency and V/S of the compression mechanism of one embodiment of the present utility model closes System's figure, when rated speed increases to 90rps, to keep exhaust average Mach number M scopes constant, V/S scope should change For 120mm≤V/S≤200mm, and it is higher in view of rotating speed, exhaust is discontinuously bigger to the adverse effect of exhaust, and considers Rated speed is more than 90rps situation, and V/S value should reduce further, it is assumed that three volumes of working chamber 106 (9.8 × 10³mm³, 22 × 10³mm³, 48 × 10³mm³) under, and carry out three under corresponding three rotating speeds (90rps/120rps/150rps) Fluid structurecoupling simulation is tieed up to calculate, the results showed that, when V/S scope is 60mm≤V/S≤140mm, COP (refrigerating efficiency) is most The performance of height, i.e. rotary compressor is higher.

The cross sectional shape of steam vent 108 can be circle, Long Circle, polygon etc..

In addition, the compression mechanism in above-described embodiment provided by the utility model can also have following supplementary technology special Sign：

Embodiment one：

As shown in figure 1, in the above embodiment, it is preferable that support component includes：Clutch shaft bearing 110 and second bearing 112, setting is bonded with two end face outsides of the component of cylinder 102 respectively, end face outside has the axially open of working chamber 106, The region corresponding with axially open of clutch shaft bearing 110 forms the first sealing surface, the region corresponding with axially open of second bearing 112 The second sealing surface is formed, wherein, steam vent 108 is opened on the first sealing surface and/or the second sealing surface.

In this embodiment, by being arranged to support component to include clutch shaft bearing 110 and second bearing 112, that is, setting When being set to single cylinder 102, clutch shaft bearing 110 and second bearing 112, clutch shaft bearing 110 are set respectively at the both ends of single cylinder 102 Region corresponding with axially open forms the first sealing surface, and the region corresponding with axially open of second bearing 112 forms the second envelope Face is closed, by opening up steam vent 108 on the first sealing surface and/or the second sealing surface, realizes the pressure of single compressor of cylinder 102 The discharge of contracting gas.

Wherein, clutch shaft bearing 110 is base bearing, and second bearing 112 is supplementary bearing, and steam vent 108 can only have one, open It is located on base bearing, it is possibility to have it is multiple, clutch shaft bearing 110 is opened in respectively with second bearing 112, meeting 60mm≤V/ On the premise of S≤140mm, by increasing the area of steam vent 108, realize that compression mechanism raises speed.

Specifically, it is contemplated that the factor such as the offset of eccentric rotary piston 104 and leaving area utilization rate, single steam vent 108 sectional area can not design excessive, and often a working chamber 106 opens up two or more steam vents 108, each steam vent 108 sectional area can with it is equal can also be unequal.

For example for single compression mechanism of cylinder 102, the steam vent 108 of two same diameters is opened up on working chamber 106, When steam vent 108 is circular hole, in volume V=10.555 × 10 of working chamber 106 of compressor³(mm³) when, then there is steam vent 108 It is a diameter of to be more than or equal to 4.90 × 10^-3M, and less than or equal to 7.48 × 10^-3m。

Embodiment two：

In any of the above-described embodiment, it is preferable that be more than or equal to 2, and the edge of multiple cylinders 102 in the quantity of cylinder 102 Axially it is arranged side by side successively, support component also includes：First partition, fitting are arranged between two cylinders 102 of arbitrary neighborhood, Be provided with axially open on two cylinders 102 of arbitrary neighborhood and the binding face of first partition, the both sides of first partition respectively with Region corresponding to axially open forms the 3rd sealing surface and the 4th sealing surface, wherein, steam vent 108 is opened in the 3rd sealing surface And/or the 4th on sealing surface.

In this embodiment, when the quantity of cylinder 102 is more than or equal to 2, except setting clutch shaft bearing at axial both ends 110 with second bearing 112, between two adjacent cylinders 102 fitting first partition is set, the both sides of first partition respectively with Region corresponding to axially open forms the 3rd sealing surface and the 4th sealing surface, by the way that steam vent 108 is opened in into the 3rd sealing surface And/or the 4th on sealing surface, realize by the function of exhaust in the middle part of compression mechanism.

Wherein, first partition can include the first sub-dividing plate that two axial directions along eccentric rotary piston 104 are bonded setting With the second sub-dividing plate, the parts of compression mechanism comprise at least the clutch shaft bearing 110, the cylinder that are from top to bottom bonded setting successively 102 components, the sound attenuation of second bearing 112 and first, wherein, the component of cylinder 102 includes being arranged side by side vertically at least Two cylinders 102, and two sub-dividing plates being arranged between two adjacent cylinders 102, the first sub-dividing plate can open up with The steam vent 108 that the working chamber 106 of upper cylinder 102 turns on, the second sub-dividing plate can open up the working chamber with lower cylinder 102 The steam vent 108 of 106 conductings.

Compression mechanism includes at least two cylinders 102, and compression mechanism surrounds at least two working chambers 106, each working chamber 106 are designed with steam vent 108, are separated between each working chamber 106 by dividing plate, the volume of each working chamber 106 can be with equal With unequal, because dynamic balance characteristic is good, can more smoothly it run at high speed, so as to realize twin-tub or multi-cylinder compression knot Application of the structure in high rotating speed compressor.

Embodiment three：

In any of the above-described embodiment, it is preferable that steam vent 108 is opened on the madial wall of cavity.

In this embodiment, by the way that steam vent 108 is opened on the madial wall of cavity, with being opened in bearing and dividing plate On steam vent 108 be that axial steam vent 108 is compared, can be further by opening up while laser intensity is ensured Steam vent 108 increases leaving area.

As shown in Figures 1 and 2, in any of the above-described embodiment, it is preferable that the component of cylinder 102 also includes：Slide plate component, Including slide plate 114 and elastomer 116, slide plate 114 is axially disposed in cavity, one end and the eccentric rotary piston of slide plate 114 104 lateral wall fitting, is divided into the first working chamber 106 and the second working chamber 106, steam vent 108 is set by working chamber 106 In in the first working chamber 106, being provided with air admission hole, the other end of slide plate 114 and the one of elastomer 116 in the second working chamber 106 End connection, the other end of elastomer 116 are fixed on specified location, wherein, when eccentric rotary piston 104 rotates, elastomer 116 Drive slide plate 114 to move back and forth by elastic deformation, so that the opposite exterior lateral sides wall of slide plate 114 slides, and realize to the first working chamber Gas in 106 is compressed.

In this embodiment, the slide plate 114 in the cavity of cylinder 102 under spring force, makes its one end total It is be in contact to be bonded with the lateral wall of offset piston, it is not connected so as to which crescent working chamber 106 is divided into A, B two Chamber, wherein, A, B chamber are respectively induction chamber and compression exhaust room, and the cumulative volume of A, B chamber is the volume of working chamber 106, Inlet and outlet mouth is offered on the madial wall of cylindrical cylinder 102.

As shown in figure 1, in any of the above-described embodiment, it is preferable that also include：Air bleeding valve 118, it is arranged at steam vent 108 It is interior, wherein, when the pressure of gas is more than drain pressure, air bleeding valve 118 is opened, and gas is discharged out of working chamber 106.

In this embodiment, by setting air bleeding valve 118, when detecting that drain pressure reaches default threshold pressure, lead to Cross and open 118 tops of air bleeding valve, realize discharge of the compressed gas out of working chamber 106.

As shown in figure 1, in any of the above-described embodiment, it is preferable that when steam vent 108 is opened on the first sealing surface, Compression mechanism also includes：Muffler 120, it is arranged on end face of the clutch shaft bearing 110 away from second bearing 112, muffler 120 is set Silencing cavity is equipped with, silencing cavity can be connected by steam vent 108 with working chamber 106, wherein, gas is from working chamber 106 along exhaust Hole 108 drains into silencing cavity, by being discharged after silencing cavity noise reduction.

In this embodiment, by setting muffler 120, muffler 120 is provided with silencing cavity, and gas is from working chamber 106 Silencing cavity is drained into along steam vent 108, by being discharged after silencing cavity noise reduction, exhaust noise is reduced, improves the property of compression mechanism Energy.

Specifically, compression mechanism includes rotation bent axle 124, coordinates the clutch shaft bearing 110 and the of support with rotation bent axle 124 Two bearings 112, the muffler 120 for being located at the top of clutch shaft bearing 110, the gas being located between clutch shaft bearing 110 and second bearing 112 Cylinder 102, the eccentric rotary piston 104 to be revolved round the sun in the cavity of cylinder 102, with piston coordinate slide plate 114, act on slide plate Slide plate 114 is set to be adjacent to the spring of piston on 114, working chamber 106 is by cylinder 102, clutch shaft bearing 110, second bearing 112 and piston Surround, steam vent 108 is opened on clutch shaft bearing 110, compresses the gases at high pressure of completion by steam vent 108 from working chamber 106 It is discharged to the inner chamber of muffler 120, then the inner chamber of housing is discharged to by the inner chamber of muffler 120.

Example IV：

In any of the above-described embodiment, it is preferable that the component of cylinder 102 also includes：At least one second partition, revolved along bias Turn a work plug 104 to be axially set in cavity, cavity is separated at least two sub- inner chambers by least one second partition, any one Intracavitary is provided with eccentric rotary piston 104 in height, to form at least two working chambers 106.

In this embodiment, at least one second partition is set by being axially arranged in cavity, at least one second Cavity is separated at least two sub- inner chambers by dividing plate, eccentric rotary piston 104 is provided with any one sub- inner chamber, with further Lift the performance of compression mechanism.

In any of the above-described embodiment, it is preferable that when steam vent 108 is variable cross-section hole, the area of section of steam vent 108 For the area of smallest cross-sectional.

As shown in Fig. 2 in any of the above-described embodiment, it is preferable that in cavity it is circular cylindrical cavity, eccentric rotary piston 104 when being cylindrical piston, when steam vent 108 is uiform section circular hole, a diameter of d of circular cylindrical cavity₁, cylindrical piston it is straight Footpath is d₂, the height of circular cylindrical cavity is h, and the aperture of uiform section circular hole is d₃, V and S satisfactions：

In this embodiment, the internal diameter of cylinder 102 is d₁, the external diameter of piston is d₂, the height of cylinder 102 is h, working chamber 106 volume is equal toA diameter of d of steam vent 108₃, the sectional area of steam vent 108 is equal toRealize and be circular cylindrical cavity in cavity, when eccentric rotary piston 104 is cylindrical piston, steam vent 108 is During uiform section circular hole, the determination of cavity volume and area of section.

For example, by taking single compression mechanism of cylinder 102 as an example, the internal diameter d of cylinder 102₁For 46mm, eccentric rotary piston 104 Outside diameter d₂For 38mm, the height of cylinder 10210 is that h is 20mm, volume V=10.555 × 10 of working chamber 106 of compressor³ (mm³)。

According to 60mm≤V/S≤140mm, the area of section S that steam vent 108 is calculated is 75.39mm²≤S≤ 175.92mm², the diameter d of steam vent 108₃ 9.80mm≤d₃Small, property is lost in≤14.97mm, now compression mechanism exhaust resistance Can be high.

Embodiment five：

In any of the above-described embodiment, it is preferable that in V >=25000mm³When, V and S meets：

In this embodiment, it is more than or equal to 25000mm in the volume of all working chamber 106³When, due to rotary compressor The rated speed of compression mechanism be hardly higher than more than 150rps (because the volume of working chamber 106 is bigger, at high speed reliable Property is more difficult to ensure), and the area that cuts of steam vent 108 is larger and is not easy to open up steam vent 108, V/S scope can be reduced into More than or equal to 80mm, and it is less than or equal to 140mm.

Embodiment six：

In any of the above-described embodiment, it is preferable that in V≤15000mm³When, V and S meets：

In this embodiment, the volume of all working chamber 106 is less than or equal to 15000mm³When, due to rotary compressor The rated speed of compression mechanism is likely to be higher than more than 150rps, and (because the volume of working chamber 106 is smaller, compressor is in high rotating speed Lower operational reliability is higher), V/S scope can be reduced into more than or equal to 60mm, and is less than or equal to 120mm.

In any of the above-described embodiment, it is preferable that when gas is R410A, drain pressure 2.542MPa, gas is being arranged The velocity of sound under gaseity is 197m/s；When gas is R290, drain pressure 1.445MPa, sound of the gas under exhaust condition Speed is 250m/s；When gas is R32, drain pressure 2.620MPa, the velocity of sound of the gas under exhaust condition is 243m/s.

In this embodiment, for compressor, swept volume is bigger, and rotating speed is higher, and the velocity of sound of gas is smaller, required The sectional area of steam vent 108 is bigger, by introducing dimensionless group --- and exhaust average Mach number M is described between this Relation, i.e.,：

Wherein V (mm³) be all working chamber 106 volume sum, S (mm²) for all steam vents 108 area of section it With the rated speed that, f (rps) is compressor, C (m/s) is the velocity of sound under exhaust condition, only at exhaust average Mach number M When specified range, the performance of compressor just can be optimal.

As shown in figure 1, the rotary compressor of embodiment of the present utility model, including：Compressor housing 122；Bent axle 124, it is arranged in compressor housing 122；Drive mechanism, it is arranged in compressor housing 122, drive component, which includes coordinating, to be assembled Stator 128 and rotor 126, rotor 126 is arranged with one end of bent axle 124 and is connected；Such as any one of the utility model first aspect Described compression mechanism, be arranged in compressor housing 122, and with axial arranging of the drive mechanism along bent axle 124, compression mechanism It is connected to the other end of bent axle 124.

In this embodiment, rotary compressor can flexibly set as swing rotary compressor or roll work The rotary compressor of plug, drive mechanism can be flexibly set as inner rotor type motor or external rotor electric machine.

In the utility model, term " first ", " second ", " the 3rd " are only used for the purpose of description, and it is not intended that Instruction implies relative importance；Term " multiple " then refers to two or more, is limited unless otherwise clear and definite.Term " peace The term such as dress ", " connected ", " connection ", " fixation " all should be interpreted broadly, for example, " connection " can be fixedly connected, can also It is to be detachably connected, or is integrally connected；" connected " can be joined directly together, and can also be indirectly connected by intermediary.It is right For one of ordinary skill in the art, it can understand that specific in the utility model of above-mentioned term containing as the case may be Justice.

In description of the present utility model, it is to be understood that term " on ", " under ", "left", "right", "front", "rear" etc. refer to The orientation or position relationship shown be based on orientation shown in the drawings or position relationship, be for only for ease of description the utility model and Simplify description, rather than the device or unit of instruction or hint meaning there must be specific direction, with specific azimuth configuration And operation, it is thus impossible to be interpreted as to limitation of the present utility model.

In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc. Mean that combining specific features, structure, material or feature that the embodiment or example describe is contained in of the present utility model at least one In individual embodiment or example.In this manual, identical embodiment is not necessarily referring to the schematic representation of above-mentioned term Or example.Moreover, specific features, structure, material or the feature of description can be in any one or more embodiments or example In combine in an appropriate manner.

Preferred embodiment of the present utility model is these are only, is not limited to the utility model, for this area Technical staff for, the utility model can have various modifications and variations.It is all within the spirit and principles of the utility model, Any modification, equivalent substitution and improvements made etc., should be included within the scope of protection of the utility model.

Claims (14)

1. A kind of 1. compression mechanism, it is characterised in that including：

   Cylinder assembly, including at least one cylinder, each it is correspondingly arranged on eccentric rotary piston in the cavity of the cylinder；

   At least one support component, it is equipped with each cylinder assembly, and closes the cavity,

   Wherein, the madial wall of the cavity, the lateral wall of the eccentric rotary piston and the sealing surface of the support component enclose Form at least one working chamber, each working chamber offers at least one steam vent, the volumes of all working chambers it And V, the area of section sum S with all steam vents, meet：

   <mrow> <mn>60</mn> <mi>m</mi> <mi>m</mi> <mo>&amp;le;</mo> <mfrac> <mi>V</mi> <mi>S</mi> </mfrac> <mo>&amp;le;</mo> <mn>140</mn> <mi>m</mi> <mi>m</mi> <mo>.</mo> </mrow>
2. 2. compression mechanism according to claim 1, it is characterised in that the support component includes：

   Clutch shaft bearing and second bearing, it is bonded setting, the end face outside with two end face outsides of the cylinder assembly respectively Axially open with the working chamber, clutch shaft bearing region corresponding with the axially open form the first sealing surface, Second bearing region corresponding with the axially open forms the second sealing surface,

   Wherein, the steam vent is opened on first sealing surface and/or second sealing surface.
3. 3. compression mechanism according to claim 2, it is characterised in that it is more than or equal to 2 in the quantity of the cylinder, and it is more The individual cylinder is arranged side by side successively vertically, and the support component also includes：

   First partition, fitting are arranged between two cylinders of arbitrary neighborhood, two cylinders of arbitrary neighborhood and institute State and the axially open be provided with the binding face of first partition, the both sides of the first partition respectively with the axially open pair The region answered forms the 3rd sealing surface and the 4th sealing surface,

   Wherein, the steam vent is opened on the 3rd sealing surface and/or the 4th sealing surface.
4. 4. compression mechanism according to claim 1, it is characterised in that

   The steam vent is opened on the madial wall of the cavity.
5. 5. compression mechanism according to claim 2, it is characterised in that the cylinder assembly also includes：

   Slide plate component, including slide plate and elastomer, the slide plate are axially disposed in the cavity, one end of the slide plate with The lateral wall fitting of the eccentric rotary piston, is divided into the first working chamber and the second working chamber by the working chamber, described Steam vent is arranged in first working chamber, is provided with air admission hole in second working chamber, the other end of the slide plate with One end connection of the elastomer, the other end of the elastomer are fixed on specified location,

   Wherein, in the eccentric rotary piston rotation, the elastomer drives the slide plate to move back and forth by elastic deformation, So that the relatively described lateral wall of the slide plate slides, and realize and the gas in first working chamber is compressed.
6. 6. compression mechanism according to claim 5, it is characterised in that also include：

   Air bleeding valve, it is arranged in the steam vent,

   Wherein, when the pressure of the gas is more than drain pressure, the exhaust valve opening, the gas is out of described working chamber Discharge.
7. 7. compression mechanism according to claim 5, it is characterised in that be opened in first sealing surface in the steam vent When upper, the compression mechanism also includes：

   Muffler, it is arranged on end face of the clutch shaft bearing away from the second bearing, the muffler is provided with silencing cavity, The silencing cavity can be connected by the steam vent with the working chamber,

   Wherein, the gas drains into the silencing cavity from the working chamber along the steam vent, after the silencing cavity noise reduction Discharge.
8. 8. compression mechanism according to claim 1, it is characterised in that the cylinder assembly also includes：

   At least one second partition, along being axially set in the cavity for the eccentric rotary piston, described at least one The cavity is separated at least two sub- inner chambers by two dividing plates, and intracavitary is provided with the eccentric rotary work in any one of son Plug, to form at least two working chambers.
9. 9. compression mechanism according to claim 1, it is characterised in that

   When the steam vent is variable cross-section hole, the area of section of the steam vent is the area of smallest cross-sectional.
10. 10. compression mechanism according to any one of claim 1 to 8, it is characterised in that in the cavity be cylindrical cavity Body, when the eccentric rotary piston is cylindrical piston, when the steam vent is uiform section circular hole, the circular cylindrical cavity it is straight Footpath is d₁, a diameter of d of the cylindrical piston₂, the height of the circular cylindrical cavity is h, and the aperture of the uiform section circular hole is d₃, V and S satisfactions：

    <mrow> <mfrac> <mi>V</mi> <mi>S</mi> </mfrac> <mo>=</mo> <mfrac> <mrow> <msup> <msub> <mi>d</mi> <mn>1</mn> </msub> <mn>2</mn> </msup> <mo>-</mo> <msup> <msub> <mi>d</mi> <mn>2</mn> </msub> <mn>2</mn> </msup> </mrow> <mrow> <msup> <msub> <mi>d</mi> <mn>3</mn> </msub> <mn>2</mn> </msup> </mrow> </mfrac> <mo>&amp;times;</mo> <mi>h</mi> <mo>.</mo> </mrow>
11. 11. compression mechanism according to any one of claim 1 to 9, it is characterised in that in V >=25000mm³When, V and S Meet：

    <mrow> <mn>80</mn> <mi>m</mi> <mi>m</mi> <mo>&amp;le;</mo> <mfrac> <mi>V</mi> <mi>S</mi> </mfrac> <mo>&amp;le;</mo> <mn>140</mn> <mi>m</mi> <mi>m</mi> <mo>.</mo> </mrow>
12. 12. compression mechanism according to any one of claim 1 to 9, it is characterised in that in V≤15000mm³When, V and S Meet：

    <mrow> <mn>60</mn> <mi>m</mi> <mi>m</mi> <mo>&amp;le;</mo> <mfrac> <mi>V</mi> <mi>S</mi> </mfrac> <mo>&amp;le;</mo> <mn>120</mn> <mi>m</mi> <mi>m</mi> <mo>.</mo> </mrow>
13. 13. the compression mechanism according to any one of claim 5 to 7, it is characterised in that

    When the gas is R410A, the drain pressure is 2.542MPa, and the velocity of sound of the gas under exhaust condition is 197m/s；

    When the gas is R290, the drain pressure is 1.445MPa, the velocity of sound of the gas under the exhaust condition For 250m/s；

    When the gas is R32, the drain pressure is 2.620MPa, and the velocity of sound of the gas under the exhaust condition is 243m/s。
14. A kind of 14. rotary compressor, it is characterised in that including：

    Compressor housing；

    Bent axle, it is arranged in the compression case body；

    Drive mechanism, it is arranged in the compression case body, the drive component includes the stator and rotor for coordinating assembling, described Rotor is arranged with one end of the bent axle and is connected；

    Compression mechanism as any one of claim 1 to 13, be arranged in the compression case body, and with the driving Axial arranging of the mechanism along the bent axle, the compression mechanism are connected to the other end of the bent axle.