CN208268064U - Multi-cylinder rotary compressor and its compression mechanism - Google Patents

Abstract

The utility model discloses a kind of multi-cylinder rotary compressor and its compression mechanisms, the compression mechanism includes: at least two cylinders, the piston rolled is recycled in the compression chamber of each cylinder, the slide plate reciprocally slid in the sliding vane groove of each cylinder, the middle partition being located between per two adjacent cylinders, with extension spring part, extension spring part includes one or two semicircular main paragraphs, the half cycle of main paragraph partition between two adjacent cylinders and in winding, the length both ends of main paragraph diametrically and are respectively equipped with fixed part and enforcement division, fixed part is positioned at cylinder or middle partition, enforcement division driving slide plate is often abutted with piston.Compression mechanism according to the present utility model not only can be improved the rigidity of cylinder, and can improve the leakage problem of refrigerant.

Description

Multi-cylinder rotary compressor and its compression mechanism

Technical field

The utility model relates to compressor apparatus fields, more particularly, to a kind of multi-cylinder rotary compressor and its compressor Structure.

Background technique

Twin-tub rotation-type compressor is compared with single cylinder rotary compressor, and cylinder thickness is than relatively thin, rigidity is poor.And And it is built-in for only supporting the coil compression spring of slide plate tail end due to being required in each cylinder of twin-tub rotation-type compressor, So that require to open up the spring installation cavity being connected to sliding vane groove on each cylinder, in this way due in script thickness with regard to relatively thin Cylinder on open up spring installation cavity, to more weaken the rigidity of cylinder.In addition, opening up for spring installation cavity can also cause The leakage problem of high pressure gas in compression chamber causes the efficiency of compressor to decline, as it is well known that twin-tub rotation-type compressor Compressor efficiency (COP) is lower compared with single cylinder rotary compressor.

It points out in the related technology, in it can carry out cutting-out cylinder operating capacity-varying rotary type compressor, twin-tub rotation-type can be cancelled Spring installation cavity in compressor on a cylinder, to improve the rigidity of a cylinder, but the spring on another cylinder Installation cavity still can not be cancelled.And such scope of application for carrying out cutting-out cylinder operating capacity-varying rotary type compressor also office Limit.

Utility model content

The utility model aims to solve at least one of the technical problems existing in the prior art.For this purpose, the utility model exists In proposing a kind of compression mechanism, the rigidity of cylinder is not only can be improved in the compression mechanism, and can improve the leakage of refrigerant Problem.

The utility model also proposes a kind of multi-cylinder rotary compressor with compression mechanism.

According to the compression mechanism of the utility model first aspect embodiment, comprising: at least two cylinders；In each gas The piston rolled is recycled in the compression chamber of cylinder；The slide plate reciprocally slid in the sliding vane groove of each cylinder；It is located at every Middle partition between two adjacent cylinders；With extension spring part, the extension spring part include one or two half Circular main paragraph, the main paragraph are described between two adjacent cylinders and the half cycle of middle partition described in winding The length both ends of main paragraph diametrically and are respectively equipped with fixed part and enforcement division, and the fixed part is positioned at the cylinder or institute Middle partition is stated, the enforcement division drives the slide plate often to abut with the piston.

According to the compression mechanism of the utility model embodiment, the rigidity of cylinder not only can be improved, and can improve cold The leakage problem of matchmaker.

In some embodiments, the tail end of the slide plate has jack, and the enforcement division is L shape and includes: to prolong along axial direction The axis stretched stretches section；With；The inserting paragraph radially extended with the extending end for stretching section by the axis, the inserting paragraph inserting is described in Only to the tail end of the slide plate in jack.

In some embodiments, the jack is not provided with the height center position of the slide plate.

In some embodiments, there is the guide groove that the short transverse along the slide plate extends, the guide groove on the slide plate It is connected to the jack and for importing the inserting paragraph in the jack.

In some embodiments, the periphery of the middle partition has along axial excision to stretch cutting for section for avoiding the axis Mouthful.

In some embodiments, the main paragraph is two and is located at the two sides of the middle partition.

In some embodiments, the main paragraph is two and is located at the ipsilateral and axially spaced of the middle partition.

In some embodiments, the main paragraph is one.

In some embodiments, there is groove, the fixed part is towards the middle partition on the outer peripheral surface of the middle partition Axis direction protrusion and be embedded in the groove.

In some embodiments, there is the fastener radially worn, the fixed part is wound around institute on the middle partition It states on fastener.

In some embodiments, there is locating shaft, the fixed part is directed away from the axis of the middle partition on the cylinder It protrudes and is wound around on the locating shaft in line direction.

In some embodiments, the extension spring part is a continuous wire form springs.

According to the multi-cylinder rotary compressor of the utility model second aspect embodiment, comprising: shell；Compression mechanism, institute Compression mechanism is stated to be located in the shell and for according to the compression mechanism of the utility model first aspect embodiment；And driving machine Structure, the driving mechanism are located in the shell and for driving the compression mechanism to execute compressed action.

According to the multi-cylinder rotary compressor of the utility model embodiment, by the compressor that above-mentioned first aspect is arranged Structure, to improve the overall structure rigidity and efficiency of multi-cylinder rotary compressor.

The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description In become obvious, or recognized by the practice of the utility model.

Detailed description of the invention

Fig. 1 is the cross-sectional view according to the twin-tub rotation-type compressor of the utility model one embodiment；

Fig. 2 is the enlarged drawing of compression mechanism shown in Fig. 1；

Fig. 3 is the cross-sectional view of the Y-Y line along Fig. 2；

Fig. 4 is the schematic diagram of extension spring part shown in Fig. 3；

Fig. 5 is the side view of Fig. 4；

Fig. 6 is the installation diagram of the slide plate and extension spring part according to the utility model one embodiment；

Fig. 7 is the side view of Fig. 6；

Fig. 8 is the explosive view of the slide plate and extension spring part according to the utility model one embodiment；

Fig. 9 is the side view of slide plate shown in fig. 8；

Figure 10 is the schematic diagram according to the compression mechanism of the utility model one embodiment；

Figure 11 is the cooperation schematic diagram of middle partition shown in Figure 10 and extension spring part etc.；

Figure 12 is the schematic diagram according to the compression mechanism of the utility model one embodiment；

Figure 13 is the cooperation schematic diagram of middle partition shown in Figure 12 and extension spring part etc.；

Figure 14 is the axis projection figure according to the compression mechanism of the utility model one embodiment.

Appended drawing reference:

Twin-tub rotation-type compressor 100；

Shell 2；Circular cylindrical shell 2a；Exhaust pipe 3；Suction line 4；

Driving mechanism 5；Stator 6；Rotor 8；

Compression mechanism 10；

Crankshaft 15；First eccentric part 15a；Second eccentric part 15b；Supplementary bearing 16；Base bearing 19；

Middle partition 20；Groove 20a；Notch 20c；

First cylinder 17；First compression chamber 17a；First sliding vane groove 17b；First cylinder rear hole 17c；

Second cylinder 18；Second compression chamber 18a；Second sliding vane groove 18b；Second cylinder rear hole 18c；

First slide plate 25；First jack 271；

Second slide plate 26；Second jack 272；Guide groove 23a；

First piston 28；Second piston 29；

Coil component spring 30；

First main paragraph 30a；First enforcement division 30c；First inserting paragraph 30e1；First axle stretches a section 30g1；

Second main paragraph 30b；Second enforcement division 30d；Second inserting paragraph 30e2；Second axis stretches a section 30g2；

Fixed part 30f；

Biserial semicircle spring 33；

First main paragraph 33a；First enforcement division 33c；First inserting paragraph 33e1；First axle stretches a section 33g1；

Second main paragraph 33b；Second enforcement division 33d；Second inserting paragraph 33e2；Second axis stretches a section 33g2；

Fixed part 33f；Fixing screws 34；Sparge pipe 38；

Single-row semicircle spring 35；

Main paragraph 35a；Enforcement division 35c；Fixed part 35f；

Major diameter coil component spring 40；

First main paragraph 40a；First enforcement division 40c；

Second main paragraph 40b；Second enforcement division 40d；

Fixed part 40f；Locating shaft 43.

Specific embodiment

The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model Limitation.

Following disclosure provides many different embodiments or example is used to realize the different structure of the utility model.For The disclosure of simplified the utility model, is hereinafter described the component of specific examples and setting.Certainly, they are only and show Example, and purpose does not lie in limitation the utility model.In addition, the utility model can in different examples repeat reference numerals And/or letter.This repetition is for purposes of simplicity and clarity, itself not indicate discussed various embodiments and/or set Relationship between setting.In addition, the example of various specific techniques and material that the utility model provides, but this field is common Technical staff can be appreciated that the applicable property of other techniques and/or the use of other materials.

In the following ,-Figure 14 referring to Fig.1, describes the multi-cylinder rotary compressor and its compression according to the utility model embodiment Mechanism.

As shown in Figure 1, multi-cylinder rotary compressor (such as twin-tub rotation-type compressor 100 shown in Fig. 1) can wrap It includes: shell (such as shell 2 shown in Fig. 1) and being located at the intracorporal compression mechanism of shell (such as compressor shown in Fig. 1 Structure 10) and driving mechanism (such as driving mechanism 5 shown in Fig. 1), driving mechanism is for driving compression mechanism execution compression to move Make.Here it is possible to understand, the composition and working principle of multi-cylinder rotary compressor are well known to those skilled in the art, Such as can be with reference to the introduction of specific embodiment hereinafter, therefore do not repeat here.In addition, it should be noted that, as described herein " multi-cylinder rotary compressor " can be vertical or horizontal.

As depicted in figs. 1 and 2, since rotary compressor is multi-cylinder, so that compression mechanism (such as shown in Fig. 1 Compression mechanism 10) include at least two cylinders (such as the first cylinder 17 and second cylinder 18 shown in Fig. 1).Compression mechanism Further include: piston (such as the first piston 28 shown in Fig. 1 and second living rolled is recycled in the compression chamber of each cylinder Fill in slide plate (such as the first slide plate 25 shown in Fig. 1 and second sliding reciprocally slid 29), in the sliding vane groove of each cylinder Piece 26), be located at per the middle partition (such as middle partition 20 shown in Fig. 1) between two adjacent cylinders.

As depicted in figs. 1 and 2, compression mechanism further include: extension spring part (coil component spring 30 as described later, biserial Semicircle spring 33, single-row semicircle spring 35, major diameter coil component spring 40 etc.), extension spring part includes one or two masters Body section (such as first main paragraph 30a and the second main paragraph 30b shown in Fig. 1), main paragraph are semicircle (manage as broad sense Solution, i.e., regular semicircle and substantially semicircle).Main paragraph between two adjacent cylinders and in winding partition half Week, (it is understood that different according to the quantity of cylinder, extension spring part can be one or more, per adjacent two Extension spring part can be set respectively between cylinder), the length both ends of main paragraph diametrically and are respectively equipped with fixed part (example Fixed part 30f as shown in Figure 1) and enforcement division (such as first enforcement division 30c and the second enforcement division 30d shown in Fig. 1), Fixed part is positioned at cylinder or middle partition, and (i.e. fixed part is static or is substantially still in the position that it is positioned on cylinder or middle partition Set), enforcement division drives slide plate often to abut (i.e. slide plate can be pressed on piston by enforcement division) with corresponding piston.After in addition, Literary embodiment one can support the description of this section to embodiment five.

Here it is possible to understand, " half cycle of partition in main paragraph winding " refers to main paragraph around middle partition periphery The half-turn in face, but may not be with the periphery face contact of middle partition.Illustrate that main paragraph is semicircle or substantially semicircle (i.e. C as a result, Shape), so that the length both ends of main paragraph are located at the two sides on interval board diameter direction, so that fixed part and enforcement division are diametrically (fixed position is in the opposite of enforcement division in other words).

Since extension spring part (refers to bear pulling force but the extension spring that cannot buckle, such as can be line and stretch bullet Spring or piece extension spring etc.), when being in the state of assembly in place according to the compression mechanism of the utility model embodiment, stretch bullet Spring part is rendered as tensional state, since fixed part is in static or substantially static positioning states, thereby executing portion by main body The effect that the stretching in portion restores elastic force the axis direction (i.e. inwardly) of partition can exert a force in slide plate.

In short, extension spring part it is unassembled in place when, main part is not stretched, and extension spring part assembly in place When, main part, which is stretched, has the elastic force for being restored to original length, which applies to enforcement division towards the side of fixed part To driving force, central axial direction of the slide plate to cylinder can be pushed by the driving force effect to slide plate thereby executing portion Movement abuts so that the apex of slide plate can enter in compression chamber with the outer peripheral surface of piston.Furthermore, it is necessary to explanation It is that " apex " as described herein refers to one end of the axis direction of partition in, and opposite one end is tail end, i.e., separate One end of the axis direction of middle partition.

It crosses as a result, and the extension spring part for compressing slide plate is set in middle partition outer region, to stretch bullet in installation When spring part, without opening up spring installation cavity involved in the prior art on cylinder, and then the rigidity of cylinder can effectively improve, Improve cylinder coolant leakage problem, especially for cylinder each in multi-cylinder rotary compressor thinner thickness, rigidity not The situation of foot, improvement is more preferably obvious, can greatly improve the efficiency (i.e. COP) of multi-cylinder rotary compressor.Further, since Extension spring part bears to be drawing force when working, and does not hold compared with the compressed spring in the prior art for compressing slide plate tail end It is buckled deformation force, so that the problem of losing, is less likely to occur, long service life.

In addition, compressed spring in the related technology usually requires the back side that sliding vane groove is arranged in, due to the back side of sliding vane groove Narrow scope is smaller, is not easy to very much the installation of compressed spring, and the spring that the utility model uses is not necessarily to for extension spring part It is mounted in the narrow space of back side of sliding vane groove, the idle region between adjacent cylinder can be located at, to set around middle partition It sets, it is convenient for assembly so as to have very big installation space, do not interfere the installation of other components, meets multi-cylinder rotary The miniaturization requirement of compressor, and since extension spring part can be protected by the cylinder of its two sides, to be not easy to send out By the problems such as damaging of colliding with, functional reliability is high for raw displacement.For example, by the way that extension spring part is arranged between two cylinders, with Be incorporated in extension spring part in compression mechanism, thus extension spring part will not interfere with bearing, muffler, motor or Person is the other component of lubricating oil of injection etc., and then the reliability of multi-cylinder rotary compressor can be improved.

In some embodiments of the utility model, as depicted in figs. 1 and 2, the tail end of slide plate has jack, and enforcement division can Think L shape (such as first enforcement division 30c shown in Fig. 1) and includes: to stretch section along the axis that axial (axial direction of middle partition) extends (such as first axle shown in Fig. 1 stretches a section 30g1) and (radial direction of middle partition) is radially extended by the extending end that axis stretches section Inserting paragraph (such as top bulge-structure of the first inserting paragraph 30e1, i.e. L shape section shown in Fig. 1), inserting paragraph inserting to (or Say and be embedded into) in jack with tail end (such as the first jack shown in Fig. 2 for being inserted into 25 tail end of the first slide plate only to slide plate Only to the tail end of the first slide plate 25 in 271).In addition, following Example one also can support retouching for this section to embodiment five It states.

The structure of enforcement division is simple as a result, easy to process, and required installation space is small, utilizes existing sliding vane groove Realize installation, and when extension spring part includes two main paragraphs, two main paragraphs can be above-mentioned L-shaped by one respectively The slide plate of partition two sides in enforcement division driving avoids two enforcement division generation movement interference problems to improve realizability, Make it possible that an extension spring part drives two slide plates simultaneously, and the Reliability of Microprocessor of extension spring part is high.

Certainly, the utility model is without being limited thereto, and in the other embodiments of the utility model, slide plate and enforcement division can be with Cooperate by other means, such as lug boss can also be set at jack, while annular ring being arranged in inserting paragraph, it will be annular Snare, which is located at, realizes enforcement division only supporting for slide plate on lug boss, which is not described herein again.

In some embodiments of the utility model, as shown in Figure 6 and Figure 7, jack can not be provided with the height of slide plate Degree center (that is, center eccentric setting of the jack with respect to slide plate, such as with the eccentricity of m shown in Fig. 7), by This, can shorten the length that axis stretches section, in this way, on the one hand may insure that inserting paragraph effectively applies to slide plate only supports power, it is another Aspect can reduce axis and stretch the inclination and distortion amount of section, so that reducing axis stretches section and the contact of slide plate tail end right angle, collision problem. In addition, at least following embodiment one can support the description of this section.In addition, it should be noted that, height side as described herein To referring to: the direction vertical with the thickness direction of slide plate and glide direction.

In some embodiments of the utility model, the height along slide plate can have as shown in Figure 8 and Figure 9, on slide plate The guide groove (such as guide groove 23a shown in fig. 8, guide groove 23a can penetrate through the tail end of slide plate) that direction extends, guide groove and jack connect Lead to and for importing inserting paragraph in jack.As a result, by setting guide groove, the cooperation of inserting paragraph and jack can be convenient, improve Installation effectiveness reduces installation difficulty, and can guarantee that there is extension spring part enough drawing forces slide plate to be driven to abut with piston. In addition, at least following embodiment one can support the description of this section.

In some embodiments of the utility model, as shown in figure 14, the periphery of middle partition be can have along axial excision To stretch the notch (such as notch 20c shown in Figure 11) of section for avoiding axis.Thus, it is possible to avoid enforcement division and middle partition Outer peripheral surface, which generates, contacts conflict of colliding with.In addition, at least following embodiment five can support the description of this section.

In some embodiments of the utility model, as shown in Figures 2 and 3, main paragraph can be for two (such as in Fig. 3 Shown in the first main paragraph 30a and the second main paragraph 30b) and be located at middle partition two sides, at this point, extension spring part can for circle Shape spring 30.Thus, it is possible to partition periphery idle space in fully utilizing, and the available 3 points branch of extension spring part Support, allows extension spring part more efficient and reliably centering partition two sides slide plates drive, and two main parts are not easy Movement interference occurs, Reliability of Microprocessor is higher.In addition, when the fixed part of this two main paragraphs is integrated into one, Ke Yijian Change the overall structure of extension spring part, and makes the fixed effect of the fixed part of extension spring part relatively reliable, two main paragraphs Enforcement division implementation effect it is relatively reliable.In addition, at least following embodiment one and embodiment five can support retouching for this section It states.

In other embodiments of the utility model, as shown in Figure 10 and Figure 11, main paragraph (such as can scheme for two First main paragraph 33a and the second main paragraph 33b shown in 11) and it is located at the ipsilateral and axially spaced of middle partition.At this time Extension spring part can be biserial semicircle spring 33 (that is, including two semicircle springs being set side by side).As a result, Other components are arranged in partition other side space in can fully utilizing, such as sparge pipe 38 etc. shown in Figure 11, from And preferably meet different actual demands.In addition, can simplify drawing when the fixed part of this two main paragraphs is integrated into one The overall structure of spring part is stretched, and makes the fixed effect of the fixed part of extension spring part relatively reliable, two main paragraphs are held The implementation effect in row portion is relatively reliable.In addition, at least following embodiment two can support the description of this section.

In the still other embodiments of the utility model, as shown in Figure 12 and Figure 13, main paragraph (such as can scheme for one Main paragraph 35a shown in 13).At this point, extension spring part can be single-row semicircle spring 35 (that is, including single-row The semicircle spring of one be arranged).Thus, it is possible to meet more actual requirements, such as when the gas in multi-cylinder rotary compressor When the odd number that cylinder quantity is three or more, so that it may use this embodiment.In addition, at least following embodiment three, example IV can To support the description of this section.

In some embodiments of the utility model, as shown in figure 3, can have on the outer peripheral surface of partition groove (such as Dovetail groove, semi-circular groove etc., such as groove 20a shown in Fig. 3), fixed part towards in partition axis direction protrusion and it is embedding It is located in groove.Thus, it is possible to realize that fixed part is positioned at middle partition, to improve the assembly efficiency of fixed part.In addition, extremely Few following embodiment one, embodiment three can support the description of this section.

In other embodiments of the utility model, as shown in figure 11, there is the fastening radially worn on middle partition Part (such as fixing screws 34 etc. shown in pin or Fig. 3), fixed part is wound around on fastener.Thus, it is possible to realize solid Determine portion and be positioned at middle partition, to improve the assembly efficiency and installation reliability of fixed part.In addition, at least following embodiment Three can support the description of this section.

In the still other embodiments of the utility model, there is locating shaft (such as institute in Figure 14 as shown in figure 14, on cylinder Locating shaft 43 shown etc.), fixed part is directed away from the axis direction protrusion of middle partition and is wound around on locating shaft.Thus, it is possible to Realize that fixed part is positioned at cylinder, to improve the assembly efficiency and installation reliability of fixed part.In addition, at least following reality The description of this section can be supported by applying example five.

In other embodiments of the utility model, as represented in figures 1 through 14, extension spring part is a continuous linear bullet (extension spring part is made of spring a continuous wire form springs in other words, wherein when main paragraph is two, one continuous linear Spring can bend out fixed part of the bending section as two main paragraphs, i.e. it is one that two fixed parts, which can integrate), by This, the structure of extension spring part is simple, easy to process and reliable to the biasing effect of slide plate, and continuous linear using one Spring replaces multiple compressed springs in the prior art, can also be effectively reduced production cost.

The design freedom of extension spring part is very big, may be implemented only to control two cylinders with a continuous wire form springs Slide plate move back and forth respectively, so as to greatly reduce production cost, simplify structure, improve functional reliability.Certainly, originally Utility model is without being limited thereto, and in the other embodiments of the utility model, extension spring part can also include more continuous linear Spring, such as the first main paragraph 30a shown in Fig. 2 and the first enforcement division 30c can be a continuous wire form springs, and second is main Body section 30b and the second enforcement division 30d can be an other continuous wire form springs.

In conclusion according to the multi-cylinder rotary compressor of at least one embodiment of the utility model, by middle partition Outer region setting is round or semicircular extension spring part, and by the L shape enforcement division on extension spring part by slide plate Tail end compress so that the apex of slide plate is abutted with piston so that slide plate can be realized with the circulating rolling of piston it is past Multiple movement.In this manner it is possible to the spring installation cavity opened up on cylinder in the prior art for installing compressed spring is abolished, thus The integral rigidity of multi-cylinder rotary compressor can be improved, and the efficiency of multi-cylinder rotary compressor can be improved, reduce multi-cylinder The cost of rotary compressor.In addition, in addition to for sliding blade spring design change other than, multi-cylinder rotary compressor other Structure and shape have almost no change, to significantly reduce difficulty of processing, improve the applicable range of the utility model.

The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description In become obvious, or recognized by the practice of the utility model.

In the following ,-Figure 14 referring to Fig.1, description is according to the multi-cylinder rotary compressor of the utility model embodiment.

Embodiment one

In the present embodiment one, multi-cylinder rotary compressor is twin-tub rotation-type compressor 100, and extension spring part is circle Spring 30.

As shown in Figure 1, twin-tub rotation-type compressor 100 includes shell 2, shell 2 includes circular cylindrical shell 2a and is welded on circle Two end cap housings of the axial ends of cylinder shell 2 are fixed with compression mechanism 10 and driving machine on the inner peripheral surface of circular cylindrical shell 2a Structure 5, wherein driving mechanism 5 includes the stator 6 being fixed on circular cylindrical shell 2a inner peripheral surface and the rotor 8 being fixed on crankshaft 15.

As shown in Figure 1, compression mechanism 10 includes: the first cylinder 17, the second gas for being fixed on circular cylindrical shell 2a inner peripheral surface Cylinder 18, the middle partition 20 being located between the first cylinder 17 and the second cylinder 18, the supplementary bearing 16 for connecting the first cylinder 17, connection the The base bearing 19 of two cylinders 18, in the first compression chamber 17a of the first cylinder 17 first piston 28 of eccentric revolution, in the second gas The song that the second piston 29 of eccentric revolution, driving first piston 28 and second piston 29 roll in second compression chamber 18a of cylinder 18 (crankshaft 15 and base bearing 19, supplementary bearing 16 distinguish slidably supported cooperation to axis 15, and have on crankshaft 15 for being arranged first piston 28 the first eccentric part 15a and the second eccentric part 15b for being arranged second piston 29), move back and forth in the first cylinder 17 (coil component spring 30 is used for for first slide plate 25, the second slide plate 26 moved back and forth in the second cylinder 18 and coil component spring 30 One slide plate 25 is pressed on first piston 28 and for the second slide plate 26 to be pressed on second piston 29) etc..

As shown in figures 1 and 3, coil component spring 30 is the extension spring part being process with a steel wire, in middle partition 20 Circumferential play in stretch, L-shaped first enforcement division 30c that the both ends of coil component spring 30 are respectively provided with and L-shaped second is executed Portion 30d, the first enforcement division 30c compress the tail end (i.e. the back side) of the first slide plate 25, so that the apex of the first slide plate 25 is pressed on the On the outer peripheral surface of one piston 28 (i.e. so that the top of the first slide plate 25 is aligned with the periphery of first piston 28 and connects), second is executed Portion 30d compresses the tail end (i.e. the back side) of the second slide plate 26, so that the apex of the second slide plate 26 is pressed on the periphery of second piston 29 On face (i.e. so that the top of the second slide plate 26 is aligned with the periphery of second piston 29 and connects).

As shown in Figure 1, the first compression chamber 17a and the second compression chamber 18a can when twin-tub rotation-type compressor 100 starts With the low pressure refrigerant sucked from the suction line 4 of the first cylinder 17 of connection and the second cylinder 18 respectively, low pressure refrigerant is flowed into Into the first compression chamber 17a and the second compression chamber 18a, the first piston 28 and second piston 29 that are revolved relatively respectively and First slide plate 25 of alternate reciprocating motion and the compression of the second slide plate 26, after low pressure refrigerant is compressed to high-pressure refrigerant respectively It is discharged in shell 2 from the muffler of 19 axis side of supplementary bearing 16 and base bearing, is arranged from shell 2 after then flowing through driving mechanism 5 Tracheae 3 is discharged.

As shown in Figures 2 and 3, middle partition 20 is located between the first cylinder 17 and the second cylinder 18, middle partition 20 be for Seal the circular slab of the second compression chamber 18a on the first compression chamber 17a and the second cylinder 18 on the first cylinder 17, middle partition 20 Thickness can be close to supplementary bearing 16 flange portion (i.e. supplementary bearing 16 is used for the surface plate portion fixed with the first cylinder 17) thickness The thickness of the flange portion (i.e. base bearing 19 is used for the surface plate portion fixed with the second cylinder 18) of degree or base bearing 19, such as with When 1HP twin-tub rotation-type compressor in domestic air conditioning, the thickness of middle partition 20 may be about 7mm.

As shown in Figures 2 and 3, coil component spring 30 includes the first main paragraph 30a and the second main paragraph 30b, the first main paragraph 30a and the second main paragraph 30b surrounds middle 20 outer diameter half-turn of partition respectively, and the tail end of the first main paragraph 30a is equipped with L-shaped first The tail end of enforcement division 30c, the second main paragraph 30b are equipped with L-shaped second enforcement division 30d.In addition, it should be noted that, in order to Preferably show the connection type and coil component spring 30 of coil component spring 30 and the first slide plate 25 and the second slide plate 26 effect and Effect, coil component spring 30 shown in Fig. 3 is its integrally-built axis projection, rather than can only be shown on the section Y-Y Part.

As shown in Figures 2 and 3, the first enforcement division 30c include along crankshaft 15 axially extending first axle stretch section 30g1 and Along the first inserting paragraph 30e1 of crankshaft 15 radially extended, first axle stretches section 30g1 and the first inserting paragraph 30e1 is mutually perpendicular to structure At L-shaped, the first inserting paragraph 30e1 (is carried on the back in the first jack 271 of the first slide plate 25 with compressing the tail end of the first slide plate 25 Face) so that the apex of the first slide plate 25 is abutted with the outer peripheral surface of first piston 28.

As shown in Figures 2 and 3, the second enforcement division 30d include along crankshaft 15 the second axially extending axis stretch section 30g2 and Along the second inserting paragraph 30e2 of crankshaft 15 radially extended, the second axis stretches section 30g2 and the second inserting paragraph 30e2 is mutually perpendicular to structure At L-shaped, the second inserting paragraph 30e2 (is carried on the back in the second jack 272 of the second slide plate 26 with compressing the tail end of the second slide plate 26 Face) so that the apex of the second slide plate 26 is abutted with the outer peripheral surface of second piston 29.

As shown in Figures 2 and 3, movement and second slide plate 26 of first slide plate 25 in the first sliding vane groove 17b are sliding second Movement in film trap 18b is in opposite direction reciprocating motion mutually, moreover, the first enforcement division 30c being fixed in the first jack 271 The movement for moving and being fixed on the second enforcement division 30d in the second jack 272 is also moved back and forth in opposite direction mutually.Such as scheming In example shown in 2 and Fig. 3, when the first slide plate 25 and the first enforcement division 30c are moved downward simultaneously, the second slide plate 26 and the Two enforcement division 30d are moved right simultaneously；And when the first slide plate 25 and the first enforcement division 30c are moved right simultaneously, the second slide plate 26 and second enforcement division 30d move downward simultaneously.

As shown in Fig. 2, on the first cylinder 17 have along crankshaft 15 axially through and with the first sliding vane groove 17b tail end connect The first logical cylinder rear hole 17c, in the process of movement in the first enforcement division 30c inserting to the first cylinder rear hole 17c In do not contacted with the first cylinder 17.On second cylinder 18 have along crankshaft 15 axially through and with the second sliding vane groove 18b tail The the second cylinder rear hole 18c for holding connection, in movement in the second main paragraph 30b inserting to the second cylinder rear hole 18c It is not contacted in the process with the second cylinder 18.

As shown in Fig. 2, the path increment ST of the path increment of the first enforcement division 30c and the first slide plate 25 is the same, it is first eccentric Two times of the eccentricity of portion 15a；The path increment ST of the path increment of second enforcement division 30d and the second slide plate 26 is the same, is second inclined Two times of the eccentricity of center portion 15b.

As shown in figure 3, coil component spring 30 includes the fixed part 30f of connection the first main paragraph 30a and the second main paragraph 30b, Fixed part 30f is C-shaped and setting are as follows: with the position diametrically the first enforcement division 30c and the second enforcement division 30d and be embedded in On groove 20a on the outer peripheral surface of partition 20.

As shown in figure 3, although interaction is stretched repeatedly respectively by the first main paragraph 30a and the second main paragraph 30b, because round Spring 30 is extension spring part, so the fixed part 30f of C-shaped will not deviate from out of groove 20a.Although in addition, as shown in figure 3, It is expected that the fixed part 30f of C-shaped is located on the throw line of the first enforcement division 30c and the second enforcement division 30d, even with a little error The normal operation of coil component spring 30 will not be influenced, certainly, is held when the fixed part 30f of C-shaped is located at the first enforcement division 30c and second On the throw line of row portion 30d, the operational effect of coil component spring 30 is more preferable.

It follows that coil component spring 30 can be process by a steel wire, and by the first jack of the first slide plate 25 271, the extension spring that these three points of the groove 20a of the second jack 272 of the second slide plate 26 and middle partition 20 are supported Part.Therefore, according to the coil component spring of the utility model embodiment 30 and compressed spring (including compression type coil in the related technology Spring, compression flat spring, compression wire spring) there is very big difference, belong to entirely different design concept.

Moreover, compressed spring usually requires the back side that sliding vane groove is arranged in, since the back side narrow scope of sliding vane groove is smaller, It is not easy to very much the installation of compressed spring, and the spring that the utility model uses is extension spring part, without being mounted on sliding vane groove The narrow space of back side in, can be arranged around middle partition, so as to have very big installation space, convenient for assembly and pressure The setting of contracting machine meets the miniaturization requirement of compressor.Moreover, when installation extension spring part, without being opened up on cylinder Spring installation cavity described in present context technology so as to effectively improve the rigidity of cylinder, while can improve compression Intracavitary high pressure refrigerant leakage problem, improves the efficiency of compressor.In addition, extension spring part in the prior art for compressing cunning The compressed spring of piece tail end is compared, since there is no buckling distortion, to be less likely to occur to lose problem, long service life.

As shown in Figure 3 and Figure 4, the internal diameter of coil component spring 30 is to be similar to the circle of middle 20 outer diameter of partition and including the first main body Section 30a, the second main paragraph 30b, the first enforcement division 30c, the second enforcement division 30d and fixed part 30f.Wherein, round bullet is manufactured The line footpath of steel wire used in spring 30 can be different according to the specific discharge capacity of twin-tub rotation-type compressor 100, such as can be 0.6mm ~1.6mm.

As shown in figure 4, the part of the separate fixed part 30f of the first main paragraph 30a and the separate of the second main paragraph 30b are consolidated The part for determining portion 30f has that axial gap is C and projection can be overlapped in the axial direction or (W is first main the region that is substantially overlapped The overlap margin of body section 30a and the second main paragraph 30b), first axle, which is axially extended, at the end end of the first main paragraph 30a stretches section 30g1 and the first inserting paragraph 30e1 is extended radially out from the end end that first axle stretches section 30g1, first axle stretches section 30g1 and One inserting paragraph 30e1 forms L-shaped first enforcement division 30c, the end end of the second main paragraph 30b along it is opposite it is axially extending go out the Two axis stretch section 30g2 and extend radially out the second inserting paragraph 30e2 from the end end that the second axis stretches section 30g2, and the second axis stretches section 30g2 and the second inserting paragraph 30e2 forms L-shaped second enforcement division 30d.

As shown in Figure 2 and Figure 5, the first enforcement division 30 and the second enforcement division 30d are main from the first main paragraph 30a and second respectively Body section 30b extends towards opposite axial be bent with radius r, then each extends over out the respectively along axial parallel radial direction again One the second inserting paragraph of inserting paragraph 30e1 30e2.First inserting paragraph 30e1 and the second inserting paragraph 30e2 are embedded in the first slide plate 25 respectively In second jack 272 of the first jack 271 and the second slide plate 26.

As shown in 4 (a), in coil component spring 30 and the first slide plate 25 and the engineering of the second slide plate 26 assembling, in order to first Inserting paragraph 30e1 inserting is into the first jack 271 of the first slide plate 25, the second inserting paragraph 30e2 inserting to the second slide plate 26 In second jack 272, the direction (the dotted arrow F1 of Fig. 4) for needing the first enforcement division 30c to be directed away from fixed part 30f is stretched The first inserting paragraph 30e1 is inserted into the first jack 271 with taking advantage of a situation, and the second enforcement division 30d is needed to be directed away from fixed part The direction (the dotted arrow F2 of Fig. 4) of 30f is stretched to take advantage of a situation and the second inserting paragraph 30e2 is inserted into the second jack 272.

As shown in Fig. 4 to Fig. 3, since the first inserting paragraph 30e1 is inserted into the first jack 271, and the second inserting paragraph 30e2 is inserted Enter in the second jack 272, so that periphery of the internal diameter of the first main paragraph 30a and the second main paragraph 30b along middle partition 20 Expand, so that the first main paragraph 30a and the second main paragraph 30b can form gap between the outer peripheral surface of middle partition 20.

In this way, coil component spring 30, which can play, makes the first main paragraph 30a and the when coil component spring 30 is extension spring part The effect that two main paragraph 30b alternately stretch, that is to say, that the first enforcement division 30c and the second enforcement division 30d can be in coil component springs It alternately moves reciprocatingly on 30 center line, i.e., described above " when the first enforcement division 30c is moved downward, the second enforcement division 30d can be moved right ", " when the first enforcement division 30c is moved right, the second enforcement division 30d can be moved downward ".

Even in addition, the clearance C formed between the first main paragraph 30a and the second main paragraph 30b shown in above-mentioned Fig. 5 C=0 can also be with, but in order to preferably avoid the interference of the first enforcement division 30c and the second enforcement division 30d, it can be by The axial length of one enforcement division 30c and the second enforcement division 30d optimize, and set C > 0 for clearance C.In addition, when the first eccentric part When the eccentricity difference of 15a and the second eccentric part 15b, the path increment of the first slide plate 25 and the second slide plate 26 be can also be different.But It is, if if the gap of the axial length and middle partition 20 of the first main paragraph 30a and the second main paragraph 30b has a margin, so that it may adopt It is coped with the method for using not design for change, and with the design of 30 length of coil component spring is only adjusted.

Moreover, in the big design of the height of the long either slide plate of path increment of slide plate, if being designed to expand respectively Shaft length or internal diameter before stating, it will be able to be coped with the design for the length for increasing rear axle.But if extending the length of rear axle, The right angle that the amount of bow r of rear axle is possible to the tail end of contact slide plate can cut off slide plate tail end in order to avoid the above problem Right angle or method shown in fig. 5.

As shown in Figure 6 and Figure 7, the position that opens up of the second jack 272 of the second slide plate 26 is the center with the second slide plate 26 Highly deviated, bias m, in this manner it is possible to easily shorten the length n of the second enforcement division 30d.In this way, due to second The length n of enforcement division 30d shortens, and in the process of movement, the tilt quantity of the second enforcement division 30d just becomes smaller the second slide plate 26, So as to improve the second enforcement division 30d contact the second slide plate 26 tail end right angle the problem of.Similarly, the first enforcement division 30c With the first slide plate 25 improvement can also be designed in conjunction with the method.

As shown in Figure 8 and Figure 9, the tail end of the second slide plate 26 offers guide groove 23a, at this point, the second of the second enforcement division 30d Inserting paragraph 30e2 can be inserted into along guide groove 23a, so that the second inserting paragraph 30e2 can be easily in embedding second jack 272. Similarly, the first enforcement division 30c and the first slide plate 25 can also be designed improvement in conjunction with the method.

In the following, volume production assembling procedure of the description according to the coil component spring 30 of the present embodiment one.

Step 1: the first compression chamber 17a and the second compression chamber 18a on the first cylinder 17 and the second cylinder 18, in Aligning assembling is carried out on the basis of partition 20.Be inserted into respectively in step 2, the first compression chamber 17a and the second compression chamber 18a piston and Slide plate.

There are two types of assembly methods for the tool of coil component spring 30, one is: it is inserted into together in step 1 with middle partition 20；Secondly It is: the therefrom side insertion of partition 20 after step 2；But which kind of assembly method no matter coil component spring 30 select, and requires After step 2, by (realization that guide groove 23a facilitates the process) in protruding apex inserting to jack.Then, then pass through song The assembling aligning of axis 15 and base bearing 19 and supplementary bearing 16 completes the assembling of the element component of compression mechanism 10.

Embodiment two

In the present embodiment two, multi-cylinder rotary compressor is twin-tub rotation-type compressor, and extension spring part is biserial half Coil component spring 33.

As shown in Figure 10 and Figure 11, embodiment two replaces the coil component spring in embodiment one using biserial semicircle spring 33 30, biserial semicircle spring 33 includes be fixed on middle partition 20 by fixed part 33f two semicircle wire form springs, and two Semicircle wire form springs are respectively the first main paragraph 33a and the second main paragraph 33b, the first main paragraph 33a and the second main paragraph 33b It is respectively positioned on ipsilateral and along crankshaft 15 the axially spaced-apart of fixed part 24 and the first sliding vane groove 17b (or second sliding vane groove 18b) line L Distribution is opened, so that two semicircle wire form springs compositions are set side by side to constitute biserial semicircle spring 33.

First main paragraph 33a and the second main paragraph 33b is connected by curving the fixed part 33f of U-shaped, so that biserial half Coil component spring 33 can have a wire form springs to be process.Since biserial semicircle spring 33 is not generate the stretching bullet buckled Spring part thereby may be ensured that there is gap between the first main paragraph 33a and the second main paragraph 33b, and the first main paragraph 33a, Gap is also respectively provided between second main paragraph 33b and middle partition 20.

As shown in Figure 10 and Figure 11, the fixed part 33f of U-shaped can be fixed on the periphery of middle partition 20 by fixing screws 34 On.In addition, the first main paragraph 33a and the second main paragraph 33b can be for the identical circular arc of radius and alternately flexible, to lead to respectively Crossing the first enforcement division 33c and the second enforcement division 33d drives the first slide plate 25 and the second slide plate 26 to move back and forth in opposite direction (i.e. As described in embodiment one, when the first slide plate 25 and the first enforcement division 33c are moved downward simultaneously, the second slide plate 26 and second is executed Portion 33d is moved right simultaneously；And when the first slide plate 25 and the first enforcement division 33c are moved right simultaneously, the second slide plate 26 and the Two enforcement division 33d are moved downward simultaneously).

Further, since the first main paragraph 33a and the second main paragraph 33b are respectively positioned on ipsilateral (i.e. two main bodys of above-mentioned line L Section is located at the ipsilateral of middle partition 20), it, can (i.e. connecting line L's be another in the other side of middle partition 20 thus in the present embodiment two Side) connection sparge pipe 38 etc..

In addition, other designs of the first enforcement division 33c and the second enforcement division 33d in the present embodiment two can be with reference implementations The design of first enforcement division 30c and the second enforcement division 30d in example one, for example, the first enforcement division 33c is L shape and inserts including first Enter section 33e1 and first axle stretches a section 33g1, the second enforcement division 33d is L shape and stretches section including the second inserting paragraph 33e2 and the second axis 33g2.In addition, the disclosed feature of other in embodiment one may be applicable to the present embodiment two, Er Qieshi under the premise of reconcilable It applies two and uses identical appended drawing reference with identical component in embodiment one.

Embodiment three

In the present embodiment three, multi-cylinder rotary compressor is twin-tub rotation-type compressor, and extension spring part is single-row half Coil component spring 35.

As shown in Figure 12 and Figure 13, embodiment three replaces the biserial semicircle in embodiment two using single-row semicircle spring 35 Shape spring 33, compared with above-described embodiment two, single-row semicircle spring 35 eliminates first compared with biserial semicircle spring 33 One of them in main paragraph 33a and the second main paragraph 33b only includes a main paragraph 35a, and one end of main paragraph 35a passes through Fixed part 35f is embedded in the groove 20a on middle 20 outer diameter of partition (in addition, fixed part 30f can be with one or two, when solid Determine to be overlapped in groove 20a when portion 30f is two and inlay), the other end one slide plate compressed by L-shaped enforcement division 35c (i.e. one of them tail end of the first slide plate 25 and the second slide plate 26, the tail of the first slide plate 25 is compressed as shown in Figure 12 to tail end End).

And (i.e. another in the first slide plate 25 and the second slide plate 26, as shown in Figure 12 second is sliding for another slide plate Piece 26) can be compressed by other means (such as by the prior art backwards to compressed spring or backwards to high pressure gas Means compressed, wherein when the second slide plate 26 be by the pressure of the generated high pressure gas after movement of the first slide plate 25 When starting actuation, the actuation time that can have 5~10 seconds between the second slide plate 26 and the first slide plate 25 is poor, in addition, in twin-tub Carry out one of cylinder in the transfiguration design of cutting-out cylinder operating, about the one of slide plate tail end of omission Spring is designed as the prior art, does not repeat here).

In addition, other designs of the enforcement division 35c in the present embodiment three can be with the first enforcement division 30c in reference implementation example one Or second enforcement division 30d design.In addition, the disclosed feature of other in embodiment one may be applicable under the premise of reconcilable The present embodiment three, and implement two and use identical appended drawing reference with identical component in embodiment three.

Example IV

In the present embodiment four, multi-cylinder rotary compressor is three cylinder rotary compressors.

Rotary compressor disclosed in example IV is three cylinder rotary compressors comprising the axial direction along crankshaft is successively arranged The first cylinder, the second cylinder and the third cylinder of column are equipped with septum primum plate, the second cylinder between the first cylinder and the second cylinder Septum secundum plate is equipped between third cylinder, septum primum plate is equipped with the coil component spring 30 or above-mentioned in above-described embodiment one Biserial semicircle spring 33 in embodiment two, with for pushing the slide plate on the first cylinder and the second cylinder to work respectively, Partition is equipped with the single-row semicircle spring 35 in above-described embodiment three in two, for pushing the slide plate work on third cylinder Make.In addition, according to example IV, it is contemplated that the application of the rotary compressor of more multi-cylinder is no longer illustrated one by one here.

Embodiment five

In the present embodiment five, multi-cylinder rotary compressor is twin-tub rotation-type compressor, and extension spring part is major diameter circle Shape spring 40.

As shown in figure 14, the present embodiment five shows by increasing the inclined of the first eccentric part 15a and the second eccentric part 15b In the big twin-tub rotation-type compressor of slide plate path increment and discharge capacity, it uses major diameter coil component spring 40 to heart amount.Major diameter coil component spring 40 Design with the coil component spring 30 in above-described embodiment one is substantially the same, and also includes being distributed in the semicircular of middle 20 two sides of partition The internal diameter of first main paragraph 40a and semicircular second main paragraph 40b, the first main paragraph 40a and the second main paragraph 40b are very big, Sufficient gap is maintained with the periphery of middle partition 20, and maintains ample clearance with the inner circumferential of circular cylindrical shell 2a.

The apex of the apex of second main paragraph 40b and the first main paragraph 40a are connected by the fixed part 40f of C-shaped, fixed part 40f is wound around on locating shaft 43 (locating shaft 43 is inserted in the circular groove on the second cylinder 18), and can be perpendicular to above-mentioned It is back and forth shaken on the direction of line L.

There is the tail end of first main paragraph 40a L-shaped first enforcement division 40c, the first enforcement division 40c to compress the first slide plate 25 Tail end, abut the first slide plate 25 with first piston 28, the tail end of the second main paragraph 40b has L-shaped second enforcement division 40d, the second enforcement division 40d compress the tail end of the second slide plate 26, abut the second slide plate 26 with second piston 29.

In the present embodiment five, since slide plate path increment and middle partition outer diameter are larger, in order to avoid the first enforcement division 30c Conflict of colliding with is contacted with the generation of the outer peripheral surface of middle partition 20 with the second enforcement division 30d, can be processed on the outer diameter of middle partition 20 Notch 20c, to avoid above-mentioned conflict.

In addition, being readily apparent that referring to the design of the present embodiment five, circle of the embodiment one into example IV Spring 30, biserial semicircle spring 33, single-row semicircle spring 35 also can be fixed using locating shaft 43.

In conclusion according to the rotary compressor of the utility model embodiment, by being arranged in middle partition outer region For compressing the extension spring part of slide plate tail end, thus when installing extension spring part, without opening up spring installation on cylinder Chamber, and then the rigidity of cylinder is improved, improve the coolant leakage problem of compression chamber, improves the efficiency (COP) of rotary compressor. In addition, extension spring part is in the prior art for compared with compressing the compressed spring of slide plate tail end, since there is no buckling distortion, To be less likely to occur to lose problem, long service life.

In addition, without conflicting with each other, those skilled in the art can be by difference described in this specification The feature of embodiment or example and different embodiments or examples is combined.

In the description of the present invention, it should be understood that term " first ", " second " are used for description purposes only, and It cannot be understood as indicating or implying relative importance or implicitly indicate the quantity of indicated technical characteristic.It defines as a result, The feature of " first ", " second " can explicitly or implicitly include one or more of the features.In the utility model In description, the meaning of " plurality " is two or more, unless otherwise specifically defined.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be It is connected directly, the mutual of connection inside two elements or two elements can also be can be indirectly connected through an intermediary Interactively.For the ordinary skill in the art, it can understand that above-mentioned term is practical new at this as the case may be Concrete meaning in type.In the present invention unless specifically defined or limited otherwise, fisrt feature is in second feature "upper" Or "lower" can be that the first and second features directly contact or the first and second features are by intermediary mediate contact.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with It can be combined in any suitable manner in any one or more of the embodiments or examples.

While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that: These embodiments can be carried out with a variety of variations, modification, replacement in the case where not departing from the principles of the present invention and objective And modification, the scope of the utility model are defined by the claims and their equivalents.

Claims (13)

1. a kind of compression mechanism characterized by comprising

At least two cylinders；

The piston rolled is recycled in the compression chamber of each cylinder；

The slide plate reciprocally slid in the sliding vane groove of each cylinder；

The middle partition being located between per two adjacent cylinders；With

Extension spring part, the extension spring part include one or two semicircular main paragraphs, and the main paragraph is located at phase Between two adjacent cylinders and the half cycle of middle partition described in winding, the length both ends of the main paragraph are diametrically and respectively Equipped with fixed part and enforcement division, the fixed part is positioned at the cylinder or the middle partition, and the enforcement division drives the cunning Piece is often abutted with the piston.

2. compression mechanism according to claim 1, which is characterized in that the tail end of the slide plate has jack, the execution Portion is L shape and includes:

The axis axially extended stretches section；With

The inserting paragraph radially extended by the extending end that the axis stretches section, the inserting paragraph inserting are interior only to support to the jack The tail end of the slide plate.

3. compression mechanism according to claim 2, which is characterized in that the jack is not provided in the height of the slide plate Heart position.

4. compression mechanism according to claim 2, which is characterized in that have on the slide plate along the height side of the slide plate To the guide groove of extension, the guide groove is connected to the jack and for importing the inserting paragraph in the jack.

5. compression mechanism according to claim 2, which is characterized in that the periphery of the middle partition have along axial excision with The notch of section is stretched for avoiding the axis.

6. compression mechanism according to claim 1, which is characterized in that the main paragraph is two and is located at the middle partition Two sides.

7. compression mechanism according to claim 1, which is characterized in that the main paragraph is two and is located at the middle partition It is ipsilateral and axially spaced.

8. compression mechanism according to claim 1, which is characterized in that the main paragraph is one.

9. compression mechanism according to claim 1, which is characterized in that have groove, institute on the outer peripheral surface of the middle partition Fixed part is stated towards the axis direction protrusion of the middle partition and is embedded in the groove.

10. compression mechanism according to claim 1, which is characterized in that tight with radially wearing on the middle partition Firmware, the fixed part are wound around on the fastener.

11. compression mechanism according to claim 1, which is characterized in that have locating shaft, the fixed part on the cylinder It is directed away from the axis direction protrusion of the middle partition and is wound around on the locating shaft.

12. compression mechanism described in any one of -11 according to claim 1, which is characterized in that the extension spring part is one Continuous wire form springs.

13. a kind of multi-cylinder rotary compressor characterized by comprising

Shell；

Compression mechanism, the compression mechanism are located in the shell and for according to compression of any of claims 1-12 Mechanism；With

Driving mechanism, the driving mechanism are located in the shell and for driving the compression mechanism to execute compressed action.