CN206221255U - Rotary compressor and refrigerating circulatory device - Google Patents

Abstract

The utility model discloses a kind of rotary compressor and refrigerating circulatory device,Rotary compressor is driven by the electric-control system of no electrolytic capacitor,Rotary compressor includes housing,Motor and compression mechanism,Electric-control system includes main circuit and control circuit,The axial two ends of housing have the first end wall and the second end wall respectively,Motor includes stator core and rotor core,In the axial direction of the housing,Ultimate range between one side end face of neighbouring first end wall of stator core and the first end wall is Dst,Compression mechanism is located at the side away from the first end wall of motor,Compression mechanism includes cylinder assembly and base bearing,Base bearing is connected on a side end face of the neighbouring motor of cylinder assembly,In the axial direction of the housing,Minimum range between one side end face of neighbouring first end wall of one side end face of neighbouring first end wall of rotor core and the flange portion of base bearing is Drt,Wherein,0.335≤Dst/Drt≤0.838.The rotary compressor has simple and reasonable, assembling simple and the low advantage of noise.

Description

Rotary compressor and refrigerating circulatory device

Technical field

The utility model is related to compressor apparatus field, is followed more particularly, to a kind of rotary compressor and a kind of refrigeration Loop device.

Background technology

Generally, strong pressure fluctuation can be produced when compressor internal high-pressure gas refrigerant is discharged, so that noise can be produced, Wherein most noise is the central cavity generation in compressor, and upper cavity is passed to through rotor vent holes, is finally passed by housing To compressor, especially when the fluctuation of the DC pulse moving voltage of motor operation in driving compressor is more notable, produce Noise also mutually strain big, and this partial noise can show abnormal due to that cannot be eliminated by Sound-proof material in air-conditioning system It is ear-piercing, influence Consumer's Experience.

Utility model content

The utility model is intended at least solve one of technical problem present in prior art.Therefore, of the present utility model One purpose is to propose a kind of rotary compressor, and the rotary compressor is driven using the electric-control system of no electrolytic capacitor It is dynamic, have the advantages that noise is small, simple and reasonable.

Another purpose of the present utility model is to propose a kind of refrigerating circulatory device.

According to the rotary compressor of the utility model one side, driven by the electric-control system of no electrolytic capacitor, the rotation Rotary compressor includes housing, motor and compression mechanism, and the electric-control system includes main circuit and control circuit, wherein, it is described The axial two ends of housing have the first end wall and the second end wall respectively, and the motor is located in the housing, and the motor includes Stator core and rotor core, in the axial direction of the housing, a side of neighbouring described first end wall of the stator core Ultimate range between face and first end wall is Dst, and the compression mechanism is located in the housing and positioned at the motor The side away from first end wall, the compression mechanism includes cylinder assembly and base bearing, and the base bearing is connected to institute On one side end face of the neighbouring described motor for stating cylinder assembly, in the axial direction of the housing, the neighbouring institute of the rotor core Between one side end face of neighbouring described first end wall for stating a side end face of the first end wall and the flange portion of the base bearing most Small distance is Drt, also, the Dst and the Drt meet relation：0.335≤Dst/Drt≤0.838；The main circuit bag The inverter that rectifier bridge, power supply unit are connected with the motor is included, the rectifier bridge is whole for being carried out to the alternating current being input into Stream, said supply unit is used to export the first Rectified alternating current and the second direct current, and absorbs what is produced during the electric power generation Energy, first Rectified alternating current is used to supply the inverter, and second direct current is used to supply the control circuit, The control circuit is used to control the inverter to drive the motor, wherein, the maximum electricity of first Rectified alternating current Pressure is more than the twice of its minimum voltage.

According to rotary compressor of the present utility model, driven by the electric-control system of no electrolytic capacitor, can substantially reduced into This, and the energy produced during electric power generation can be absorbed to prevent overvoltage, and the voltage pulsation of the first Rectified alternating current causes Noise can effectively be suppressed by the way that the value of Dst/Drt is arranged in rational scope, so as to reduce rotary compressor Noise during work so that rotary compressor has simple and reasonable, assembling simple and is effectively reduced noise, lifting The advantages of efficiency.

Further, said supply unit includes：Acceptor of energy, the acceptor of energy includes storage capacitor；DC-DC Converter, the DC-DC converter is connected to the two ends of the storage capacitor, and the DC-DC converter is used to exporting described the Two direct currents；Pulsating volage offer portion, the pulsating volage offer portion receives the output voltage of the rectifier bridge, and exports described First Rectified alternating current is to the inverter.

Wherein, the acceptor of energy also includes：First diode, the anode of first diode and the pulsation electricity The positive terminal in pressure offer portion is connected；Absorption resistance, one end of the absorption resistance is connected with the negative electrode of first diode, institute The other end for stating absorption resistance is connected with one end of the storage capacitor, the other end of the storage capacitor and the pulsating volage The negative pole end in offer portion is connected.

Preferably, being also associated between the first input end of the rectifier bridge and an output end of the alternating current can Control switch, the gate-controlled switch is also included the second diode and second resistance by the control circuit control, said supply unit, The anode of second diode is connected with an output end of the alternating current, the negative electrode of second diode and described One end of two resistance is connected, and the other end of the second resistance is connected with the storage capacitor, second diode and second Resistance is used to be charged to the storage capacitor when the gate-controlled switch disconnects.

Specifically, the Dst and the Drt further meet relation：0.568≤Dst/Drt≤0.680.

Specifically, the passage being formed through on the rotor core, the central axis of the passage with described turn The rotation axis of sub- iron core is parallel.

Further, first diameter of the passage on the rotor core is axisymmetricly distributed, the passage Width D in first diametric(al) meets：0.204mm≤D≤0.480mm.

Preferably, the D further meets：0.404mm≤D≤0.460mm.

Specifically, the passage is multiple and is evenly spaced apart in the circumference of the rotor core.

According to the refrigerating circulatory device of the utility model another aspect, including above-mentioned rotary compressor.

The utility model proposes refrigerating circulatory device, rotary compressor by no electrolytic capacitor electric-control system drive, Cost can be substantially reduced, and the energy that is produced during electric power generation can be absorbed to prevent overvoltage, and the first Rectified alternating current The noise that voltage pulsation causes can effectively be suppressed by the way that the value of Dst/Drt is arranged in rational scope, so as to can drop Low operation noise, has the advantages that noise is low, efficiency is high.

Additional aspect of the present utility model and advantage will be set forth in part in the description, partly by from following description In become obvious, or by it is of the present utility model practice recognize.

Brief description of the drawings

Figure 1A is the sectional view of the rotary compressor according to the utility model embodiment；

Figure 1B is the circuit diagram of the electric-control system of the rotary compressor according to the utility model one embodiment；

Fig. 2 is the axial schematic diagram of the rotor core according to the utility model one embodiment；

Fig. 3 is the axial schematic diagram of the rotor core according to the utility model another embodiment；

Fig. 4 is the axial schematic diagram of the rotor core according to the utility model further embodiment；

Fig. 5 is the graph of relation of the Dst/Drt values according to the utility model embodiment and level of noise；

Fig. 6 is the graph of relation of the D values according to the utility model embodiment and level of noise.

Reference：

Rotary compressor 100；

Housing 1；First housing 11；First end wall 111；

Middle casing 12；

Second housing 13；Second end wall 131；

Motor 2；Stator core 21；

Rotor core 22；Passage 221；

Compression mechanism 3；Cylinder assembly 31；Base bearing 32；Flange portion 321；

Bent axle 4；

Electric-control system 200：

Main circuit 300；Control circuit 400；

Rectifier bridge 301；Power supply unit 302；Inverter 303.

Specific embodiment

Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein ad initio Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng The embodiment for examining Description of Drawings is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model Limitation.

Following disclosure provides many different embodiments or example is used for realizing different structure of the present utility model.For Simplification disclosure of the present utility model, hereinafter part and setting to specific examples be described.Certainly, they are only and show Example, and purpose does not lie in limitation the utility model.Additionally, the utility model can in different examples repeat reference numerals And/or letter.This repetition is for purposes of simplicity and clarity, discussed various embodiments itself not to be indicated and/or is set Relation between putting.Additionally, the example of the various specific technique that provides of the utility model and material, but this area is common Technical staff can be appreciated that the use of the applicable property and/or other materials of other techniques.

The rotary compressor 100 according to the utility model embodiment is described below with reference to Figure 1A-Fig. 6, it is described rotary The refrigerant of low-temp low-pressure can be converted into compressor 100 the refrigerant discharge of HTHP.Wherein, rotary compressor 100 can Think vertical compressor or bedroom compressor etc., only illustrated so that rotary compressor 100 is as vertical compressor as an example below.

With reference to shown in Figure 1A and Figure 1B, the rotary compressor 100 according to the utility model embodiment, by no electrolytic capacitor Electric-control system 200 drive, rotary compressor 100 includes：Housing 1, motor 2, compression mechanism 3 and bent axle 4, electric-control system 200 include main circuit 300 and control circuit 400.

Wherein, the axial two ends of housing 1 have the first end wall 111 and the second end wall 131, the example of such as Figure 1A respectively In, housing 1 can include the first housing 11, middle casing 12, the second housing 13, and middle casing 12 can be formed as cylindrical shape, So as to columnar middle casing 12 can limit certain receiving space, it is easy to the parts inside rotary compressor 100 The installation of (such as motor 2 and compression mechanism 3 shown in Figure 1A).

With reference to Figure 1A, the first housing 11 (such as upper shell shown in Figure 1A) and the second housing 13 are (such as shown in Figure 1A Lower house) the axial two ends of middle casing 12 are connected to, so, the first end wall 111 can be the bottom wall of first shell body 11 Face, the second end wall 131 can be the top wall surface of second shell body 13.

Further, any one in the first housing 11 and the second housing 13 can be integrally formed with middle casing 12, ginseng Examine Figure 1A, the first housing 11 can be integrally formed with middle casing 12, so as to after parts are assembled, by middle casing 12 with Second housing 13 is fixed together, and is easy to the assembling of rotary compressor 100, improve production efficiency.Certainly, the second housing 13 Can be integrally formed with middle casing 12, so as to after parts are assembled, middle casing 12 be fixed on the first housing 11 Together, the assembling of rotary compressor 100 is completed.

Specifically, motor 2 is located in housing 1, and motor 2 includes stator core 21 and rotor core 22, in the axial direction of housing 1 On (such as the above-below direction shown in Figure 1A), a side end face of neighbouring first end wall 111 of stator core 21 and the first end wall Ultimate range between 111 is Dst, such as in the example of Figure 1A, in the vertical direction, the upper surface of stator core 21 and the The distance between one end wall 111 is Dst, needs exist for explanation, when profile of first housing 11 for irregular shape, Dst is then the ultimate range between the upper surface of stator core 21 and the madial wall of the first housing 11.

Further, compression mechanism 3 is located in housing 1 and positioned at the side away from the first end wall 111 of motor 2, for example In the example of Figure 1A, compression mechanism 3 can be arranged on the lower section of motor 2, thus compression mechanism 3 compared with motor 2 away from the first end wall 111, and it is easy to installation and the cooperating of motor 2 and compression mechanism 3.

Specifically, with reference to Figure 1A, compression mechanism 3 includes cylinder assembly 31 and base bearing 32, and base bearing 32 is connected to cylinder On one side end face (such as the upper surface of the cylinder assembly 31 shown in Figure 1A) of the neighbouring motor 2 of component 31, in the axle of housing 1 To on (such as the above-below direction shown in Figure 1A), a side end face of neighbouring first end wall 111 of rotor core 22 and base bearing Minimum range between one side end face of neighbouring first end wall 111 of 32 flange portion 321 is Drt, such as in the example of Figure 1A In, the distance between the upper surface of rotor core 22 and the top of flange portion 321 of base bearing 32 are Drt.

Wherein, Dst and Drt meet relation：0.335≤Dst/Drt≤0.838, with reference to Fig. 5, needs exist for explanation, Abscissa in Fig. 5 represents the value of Dst/Drt, and the ordinate α in Fig. 5 represents noise OA when rotary compressor 100 works Value, specifically, with the continuous increase of Dst/Drt, the operating noise OA values of rotary compressor 100 are first gradually lowered to necessarily Degree, then gradual increase again, by the different designs of the Dst/Drt ratios to rotary compressor 100, can cause rotation Formula compressor 100 has different noises, for example, when Dst/Drt is 0.4,0.45,0.55,0.6,0.75, rotary compressor 100 operating noise can be all effectively reduced.

It follows that being set to by by the Dst/Drt values of rotary compressor 100：0.335≤Dst/Drt≤ 0.838, can all be effectively reduced the operating noise of rotary compressor 100.

Explanation is needed exist for, motor 2 and compression mechanism 3 can be coaxially disposed with housing 1, that is to say, that bent axle 4 Central axis and housing 1 central axes so that the central axis weight of the rotation axis of rotor core 22 and housing 1 Close, the central axis of base bearing 32 and the central axis of cylinder assembly 31 also with the central axes of housing 1, so, can So that rotary compressor 100 is simple and reasonable, and it is easy to the assembling of rotary compressor 100.

With reference to shown in Figure 1B, main circuit 300 includes the inverter that rectifier bridge 301, power supply unit 302 are connected with motor 2 303, rectifier bridge 301 is used to carry out rectification to the alternating current being input into, and power supply unit 302 is used to exporting the first Rectified alternating current and the Two direct currents, and the energy produced when motor 2 generates electricity is absorbed, the first Rectified alternating current is used to supply inverter 303, the second direct current Electricity is used for supply control circuit 400, and control circuit 400 is used to control inverter 303 with motor 2, wherein, the first pulsation is straight The maximum voltage for flowing electricity is more than the twice of its minimum voltage.

According to one embodiment of the present utility model, as shown in Figure 1B, rectifier bridge 301 can be made up of four diodes Full bridge rectifier, inverter 303 can be the three-phase inverting circuit being made up of two switching tubes, and power supply unit 302 includes： Acceptor of energy 3021, DC-DC converter 3022 and pulsating volage offer portion 3023, acceptor of energy 3021 include storage capacitor Cs, DC-DC converter 3022 is connected to the two ends of storage capacitor Cs, DC-DC converter 3022 be used to exporting the second direct current with Supply control circuit 400, pulsating volage offer portion 3023 receives the output voltage of rectifier bridge 301, and exports the first pulsating direct current Electricity is to inverter 303.

Wherein, the first Rectified alternating current is forceful electric power, and the second direct current is light current, and power supply unit 302 is also to forceful electric power and light current It is effectively isolated.

Specifically, in one embodiment of the present utility model, as shown in Figure 1B, acceptor of energy 3021 also includes：The The anode of one diode Ds and absorption resistance Rs, the first diode Ds is connected with the positive terminal in pulsating volage offer portion 3023, inhales The one end for receiving resistance Rs is connected with the negative electrode of the first diode Ds, the other end of absorption resistance Rs and one end phase of storage capacitor Cs Even, the other end of storage capacitor Cs is connected with the negative pole end in pulsating volage offer portion 3023.

Also, in a preferred embodiment of the present utility model, in first input end and the alternating current of rectifier bridge 301 Gate-controlled switch S such as relays are also associated between one output end, the controlled circuits 400 of gate-controlled switch S are controlled, power supply unit A 302 output end phases of the anode with alternating current for also including the second diode Dss and second resistance Rss, the second diode Dss Even, the negative electrode of the second diode Dss is connected with one end of second resistance Rss, the other end and the storage capacitor Cs of second resistance Rss It is connected, the second diode Dss and second resistance Rss is used to be charged to storage capacitor Cs when gate-controlled switch S disconnects, it is ensured that control Circuit 400 can obtain electric working on.

Therefore, in embodiment of the present utility model, rotary compressor is driven by the electric-control system of no electrolytic capacitor, can The energy produced to substantially reduce cost, and when can absorb electric power generation by acceptor of energy, such that it is able to prevent electricity Pressure, and the noise that the voltage pulsation of the first Rectified alternating current causes can be arranged in rational scope by by the value of Dst/Drt Effectively suppressed.

In sum, according to the rotary compressor of the utility model embodiment, driven by the electric-control system of no electrolytic capacitor It is dynamic, cost can be substantially reduced, and the energy that is produced during electric power generation can be absorbed to prevent overvoltage, and the first Rectified alternating current The noise that causes of voltage pulsation can effectively be suppressed by the way that the value of Dst/Drt is arranged in rational scope, so as to drop Noise when low rotary compressor works so that rotary compressor has simple and reasonable, assembling simple and effective The advantages of ground reduces noise, improving energy efficiency.

Preferably, Dst and Drt further meet relation：0.568≤Dst/Drt≤0.680, for example, when Dst/Drt is 0.58th, 0.6 or 0.65 when, the operating noise of rotary compressor 100 close to minimum, it follows that by by rotary compression The Dst/Drt values of machine 100 are set to：0.568≤Dst/Drt≤0.680, can further reduce rotary compressor 100 Operating noise.

In some embodiments of the present utility model, with reference to Figure 1A and Fig. 2, the HTHP discharged from compression mechanism 3 Refrigerant can be driven upwards, the passage 221 being formed through on rotor core 22, thus can be easy to the refrigerant of HTHP to Upper transmission, reduces noise.

Further, the central axis of passage 221 is parallel with the rotation axis of rotor core 22, for example showing in Figure 1A In example, the rotation axis of rotor core 22 is above-below direction, so that the central axis of passage 221 can also be above-below direction, So as to further be easy to the upward transmission of the refrigerant of HTHP, noise is effectively further reduced.

In some embodiments of the present utility model, first diameter of the passage 221 on rotor core 22 is axisymmetricly Distribution, width D of the passage 221 in the first diametric(al) meets：0.204mm≤D≤0.480mm, such as in the example of Fig. 2 In, the first diameter k that passage 221 can be on rotor core 22 is symmetrical arranged, width of the passage 221 on the first diameter k It is D, with reference to Fig. 6, needs exist for explanation, the abscissa in Fig. 6 represents the value of D, and the ordinate α in Fig. 6 represents rotary Noise OA values when compressor 100 works, specifically, as the continuous change of D values is big, the operating noise elder generation of rotary compressor 100 It is gradually lowered to a certain degree, then gradual increase again, by the D values of the passage 221 to rotary compressor 100 not With design, can cause that rotary compressor 100 has different noises, for example, when D is 0.25mm, 0.35mm, 0.41mm, rotation The operating noise of rotary compressor 100 can be all effectively reduced.

It follows that being set to by by the D values of the passage 221 of rotary compressor 100：0.204mm≤D≤ 0.480mm, can be effectively reduced the operating noise of rotary compressor 100.

Preferably, D further meets：0.404mm≤D≤0.460mm, for example, when D be 0.41mm, 0.43mm or During 0.45mm, the operating noise of rotary compressor 100 close to minimum, it follows that by by the logical of rotary compressor 100 The D values of stomata 221 are set to：0.404mm≤D≤0.460mm, the work that can further reduce rotary compressor 100 is made an uproar Sound.

In some embodiments of the present utility model, the contour line of the cross section of passage 221 can be formed as curve or The combination of straight line and curve, for example, the cross section of passage 221 can be hollow arc shape (as shown in Figure 2), or Circular (as shown in Figure 3), can also be round rectangle (as shown in Figure 4), consequently facilitating the circulation of the refrigerant of HTHP, Reduce the operating noise of rotary compressor 100.Certainly, the utility model not limited to this, the cross section of passage 221 can also It is the combination shape of other curves or straight line and curve, preferably to meet actual use demand.

In some embodiments of the present utility model, in the rotation axis direction of rotor core 22 (such as shown in Figure 1A Above-below direction) on, the shape of cross section of passage 221, size all same, so as on the one hand be easy to the processing of passage 221, The complex manufacturing of rotary compressor 100 is reduced, on the other hand may be such that the refrigerant of HTHP by passage Flowing when 221 is more uniform, enters the operating noise of ground reduction rotary compressor 100.

In some embodiments of the present utility model, with reference to Fig. 2, passage 221 can be for multiple and in rotor core 22 Circumference on be evenly spaced apart, that is to say, that multiple passages 221 are evenly spaced apart in the circumference of rotor core 22 and set Put, so as to facilitate the processing of passage 221, and be easy to the circulation of HTHP refrigerant.

Further, with reference to Fig. 2-Fig. 4, the shape of each passage 221, size all same, so as to further facilitate The processing of passage 221, improves the circulation uniformity of HTHP refrigerant, and then is effectively reduced rotary compressor 100 Operating noise.

In some embodiments of the present utility model, with reference to Figure 1A, rotor core 22 is rotatably arranged at stator core 21 Inner side, specifically, the periphery wall of stator core 21 can be fixed with the internal perisporium of housing 1, and rotor core 22 can be with song The hot jacket of axle 4 is connected, and so as to effectively improve the fitment stability of motor 2 and compression mechanism 3, and is easy to rotary compressor 100 Assembling.Certainly, the utility model not limited to this, rotor core 22 can also rotationally be located at the outside of stator core 21.

In addition, other composition, operation principle and operating sides of the rotary compressor according to the utility model embodiment Formula is all for those of ordinary skills known, is not detailed herein.

Additionally, embodiment of the present utility model also proposed a kind of refrigerating circulatory device, it includes above-mentioned rotary pressure Contracting machine 100.

The refrigerating circulatory device of the utility model embodiment, rotary compressor is driven by the electric-control system of no electrolytic capacitor It is dynamic, cost can be substantially reduced, and the energy that is produced during electric power generation can be absorbed to prevent overvoltage, and the first Rectified alternating current The noise that causes of voltage pulsation can effectively be suppressed by the way that the value of Dst/Drt is arranged in rational scope so that can Operation noise is reduced, has the advantages that noise is low, efficiency is high.

In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outward ", The orientation or position relationship of the instruction such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " are based on shown in the drawings Orientation or position relationship, are for only for ease of description the utility model and simplify description, rather than the dress for indicating or implying meaning Put or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the utility model Limitation.

Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or Implicitly include one or more this feature.In description of the present utility model, " multiple " is meant that two or two More than, unless otherwise expressly limited specifically.

In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be Mechanically connect, or electrically connect, can also be communication；Can be joined directly together, it is also possible to by the indirect phase of intermediary Even, can be two element internals connection or two interaction relationships of element.For one of ordinary skill in the art For, can as the case may be understand concrete meaning of the above-mentioned term in the utility model.

In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score Can be the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, first is special Levy second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term State and be necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be with Combined in an appropriate manner in any one or more embodiments or example.Additionally, in the case of not conflicting, this area Technical staff the feature of the different embodiments or example described in this specification and different embodiment or example can be entered Row is combined and combined.

While there has been shown and described that embodiment of the present utility model, it will be understood by those skilled in the art that： In the case where principle of the present utility model and objective is not departed from various changes, modification, replacement can be carried out to these embodiments And modification, scope of the present utility model limits by claim and its equivalent.

Claims (10)

1. a kind of rotary compressor, it is characterised in that the rotary compressor is driven by the electric-control system of no electrolytic capacitor, The rotary compressor includes housing, motor and compression mechanism, and the electric-control system includes main circuit and control circuit, its In,

The axial two ends of the housing have the first end wall and the second end wall respectively, and the motor is located in the housing, described Motor includes stator core and rotor core, in the axial direction of the housing, neighbouring described first end wall of the stator core A side end face and first end wall between ultimate range be Dst, the compression mechanism is located in the housing and is located at The side away from first end wall of the motor, the compression mechanism includes cylinder assembly and base bearing, the base bearing It is connected on a side end face of the neighbouring described motor of the cylinder assembly, in the axial direction of the housing, the rotor core Neighbouring described first end wall a side end face and neighbouring described first end wall of the flange portion of the base bearing a side end face Between minimum range be Drt, also, the Dst and the Drt meet relation：0.335≤Dst/Drt≤0.838；

The main circuit includes the inverter that rectifier bridge, power supply unit are connected with the motor, and the rectifier bridge is used for input Alternating current carry out rectification, said supply unit is used to export the first Rectified alternating current and the second direct current, and absorbs the electricity The energy that machine is produced when generating electricity, first Rectified alternating current is used to supply the inverter, and second direct current is used to supply To the control circuit, the control circuit is used to control the inverter to drive the motor, wherein, first pulsation Galvanic maximum voltage is more than the twice of its minimum voltage.

2. rotary compressor according to claim 1, it is characterised in that said supply unit includes：

Acceptor of energy, the acceptor of energy includes storage capacitor；

DC-DC converter, the DC-DC converter is connected to the two ends of the storage capacitor, and the DC-DC converter is used for defeated Go out second direct current；

Pulsating volage offer portion, the pulsating volage offer portion receives the output voltage of the rectifier bridge, and exports described first Rectified alternating current is to the inverter.

3. rotary compressor according to claim 2, it is characterised in that the acceptor of energy also includes：

First diode, the anode of first diode is connected with the positive terminal in the pulsating volage offer portion；

Absorption resistance, one end of the absorption resistance is connected with the negative electrode of first diode, the absorption resistance it is another End is connected with one end of the storage capacitor, the negative pole end phase in the other end of the storage capacitor and the pulsating volage offer portion Even.

4. rotary compressor according to claim 2, it is characterised in that first input end and institute in the rectifier bridge Gate-controlled switch is also associated between an output end for stating alternating current, the gate-controlled switch is described by the control circuit control Power supply unit also includes the second diode and second resistance, the anode of second diode and an output of the alternating current End is connected, and the negative electrode of second diode is connected with one end of the second resistance, the other end of the second resistance and institute State storage capacitor to be connected, second diode and second resistance are used for when the gate-controlled switch disconnects to the storage capacitor Charge.

5. the rotary compressor according to any one of claim 1-4, it is characterised in that the Dst and the Drt enter One step meets relation：0.568≤Dst/Drt≤0.680.

6. rotary compressor according to claim 1, it is characterised in that what is be formed through on the rotor core is logical Stomata, the central axis of the passage is parallel with the rotation axis of the rotor core.

7. rotary compressor according to claim 6, it is characterised in that the passage is on the rotor core First diameter is axisymmetricly distributed, and width D of the passage in first diametric(al) meets：0.204mm≤D≤ 0.480mm。

8. rotary compressor according to claim 7, it is characterised in that the D further meets：0.404mm≤D≤ 0.460mm。

9. rotary compressor according to claim 6, it is characterised in that the passage is multiple and in the rotor It is evenly spaced apart in the circumference of iron core.

10. a kind of refrigerating circulatory device, it is characterised in that including the rotary pressure according to any one of claim 1-9 Contracting machine.