CN208793231U - Cylinder, compression mechanism, rotary compressor and heat pump assembly - Google Patents

Abstract

The utility model discloses a kind of cylinder, compression mechanism, rotary compressor and heat pump assemblies.The compression chamber for roller rolls cooperation is limited in cylinder, the peripheral wall of cylinder is equipped with the sliding vane groove and the first limit port being open towards compression chamber, limits plunger shaft on the peripheral wall of cylinder, plunger shaft offers communication port on the inner peripheral surface of compression chamber.According to the cylinder of the utility model embodiment, increase the mode of capacity, the amount of parts of compressor can be reduced, reduce volume and weight, substantially reduce cost.

Description

Cylinder, compression mechanism, rotary compressor and heat pump assembly

Technical field

The utility model relates to compressor field more particularly to a kind of cylinder, compression mechanism, rotary compressor and heat pumps Device.

Background technique

It is realized in air conditioner industry there are technologies such as two-stage compression, multi-stage compression, independent compression, transfiguration compressions at present Conventional means are to increase a rotary compression chamber up in existing rotary compressor, are set by carrying out correlation to this compression chamber It counts and matches, to realize above-mentioned technical purpose.But the design structure is easy to cause two main problems, first is increased The cost of rotary compression chamber is excessively high, and a series of cost of corresponding structures is high；Second is increased rotary pressure The efficiency of contracting chamber is lower.

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 mentions A kind of cylinder of rotary compressor out, this cylinder can add plunger shaft in the peripheral wall of original compression chamber, avoid compressing Infrastructure cost increases excessive problem after amount increases.

The utility model, which also refers to, is providing a kind of compression mechanism with above-mentioned cylinder.

The utility model, which also refers to, is providing a kind of rotary compressor with compression mechanism.

The utility model, which also refers to, is providing a kind of with above-mentioned rotary compressor and heat pump assembly.

According to a kind of cylinder of rotary compressor of the utility model embodiment, limit in the cylinder for roller The compression chamber of cooperation is rolled, the peripheral wall of the cylinder is equipped with the sliding vane groove being open towards the compression chamber, the week of the cylinder Wall is equipped with the first air entry, limits plunger shaft, inner circumferential of the plunger shaft in the compression chamber on the peripheral wall of the cylinder Communication port is offered on face.

According to the cylinder of the utility model embodiment, decrement can be increased, relative to by way of increasing number of cylinders For, amount of parts can be reduced, reduce compressor volume and weight, substantially reduce cost.

In some embodiments, the plunger shaft with the shape of the communication port along the radial perforation of the compression chamber and At.

In some embodiments, the central axes of first air entry and the center line of the plunger shaft are generally aligned in the same plane On

Specifically, the plunger shaft is arranged adjacent to first air entry, and first air entry is located at the communication port Between the sliding vane groove or the communication port is between first air entry and the sliding vane groove.

In some embodiments, the inner peripheral surface of the compression chamber is equipped with connectivity slot, and one end of the connectivity slot extends to First air entry, the other end of the connectivity slot extend to the communication port.

Optionally, size of the connectivity slot in the axial direction of the compression chamber is greater than the 30% of the cylinder height, institute The depth for stating connectivity slot is more than or equal to 0.5mm.

According to a kind of compression mechanism of the utility model embodiment, comprising: cylinder, the cylinder are according to above-described embodiment The cylinder；Roller, the roller rolls cooperation is in the compression chamber of the cylinder；Slide plate, the slide plate reciprocable Ground is located in the sliding vane groove of the cylinder, and the inner end of the slide plate is connected with the roller；Piston, the piston reciprocable Ground is located in the plunger shaft of the cylinder, and the head of the piston can extend into the compression chamber and be connected with the roller.

The compression mechanism of the utility model embodiment breaches the pump body structure of existing rotary compressor, makes former single The compression of cylinder body is able to achieve the compression of at least two cylinder bodies, completes the combined compression that the main body pump housing carries small pump.Benefit Plunger shaft is formed with cylinder, i.e., constitutes compression chamber using existing part, it is compact-sized, reduce amount of parts, is conducive to Compressor volume and weight is reduced, cost is substantially reduced.

Specifically, the compression mechanism further include: air control valve plate, the air control valve plate are located on the periphery wall of the cylinder To close the plunger shaft, the air control valve plate is equipped with the second air entry and second exhaust port for being connected to the plunger shaft；Row Device of air, the exhaust apparatus are located on the air control valve plate, and the exhaust apparatus is for controlling opening for the second exhaust port It closes.

Optionally, the air control valve plate is equipped with mating groove, and the bottom wall of the mating groove is equipped with the second exhaust port, The exhaust apparatus includes the exhaust valve plate being located in the mating groove.

Optionally, the plunger shaft is circular cavity, and the piston is the cylinder to match；Alternatively, the plunger shaft is Rectangular cavity, the piston are the square plate to match.

According to the rotary compressor of the utility model embodiment, comprising: shell, the shell have the first gas outlet, First gas returning port, the second gas outlet and the second gas returning port；And compression mechanism, the compression mechanism are according to the utility model Compression mechanism described in above-described embodiment, the compression mechanism are located in the shell；Wherein, first gas outlet is for arranging The gas compressed in compression chamber in the compression mechanism out, first gas returning port are used for the compression chamber air inlet, and described the Two gas outlets are used to be discharged the gas compressed in plunger shaft in the compression mechanism, and second gas returning port is used for the piston Chamber air inlet.

According to the rotary compressor of the utility model embodiment, the capacity of rotary compressor can be increased, simultaneously Amount of parts can be reduced, reduce compressor volume and weight, substantially reduce cost.

Specifically, the rotary compressor is single cylinder compressor or duplex cylinder compressor or multicylinder compressor.

According to the heat pump assembly of the utility model embodiment, comprising: rotary compressor, the rotary compressor are root According to rotary compressor described in the utility model above-described embodiment；Two heat exchangers are connected between described two heat exchangers, institute It states one in two heat exchangers and connects first gas outlet, another described first gas returning port of connection；Two restricting elements, Described two restricting elements are connected in series between described two heat exchangers；Gas-liquid separation device, the gas-liquid separation device string Connection is connected between two restricting elements, and the gas-liquid separation device has separated gas outlet, and the separation gas goes out Mouth connects second gas returning port；And second gas outlet connects the heat exchanger being connected with first gas outlet.

It is not only energy-efficient according to the heat pump assembly of the utility model embodiment, and cost can be reduced.

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

The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will Become obvious and be readily appreciated that, in which:

Fig. 1 is the cylinder stereoscopic schematic diagram of the utility model one embodiment；

Fig. 2 is the layout simplified schematic diagram of the compression mechanism of the utility model one embodiment；

Fig. 3 is the layout simplified schematic diagram of the compression mechanism of the utility model another embodiment；

Fig. 4 is the schematic cross-sectional view of the piston of the utility model one embodiment；

Fig. 5 is the layout simplified schematic diagram of the compression mechanism of the utility model another embodiment；

Fig. 6 is the stereoscopic schematic diagram of the compression mechanism of the utility model one embodiment；

Fig. 7 is the structural schematic diagram of the heat pump assembly of the utility model one embodiment.

Appended drawing reference:

Heat pump assembly 1000,

Rotary compressor 100A, the first gas outlet 101, the first gas returning port 102, the second gas outlet 103, the second gas returning port 104、

Compression mechanism 100, cylinder 1, compression chamber 11, the first air entry 111, first row port 112, sliding vane groove 113, piston Chamber 12, second exhaust port 122, communication port 123, connectivity slot 124, thickened wall 13, roller 2, slide plate 3, is lived at second air entry 121 Plug 4, capping 41, piston rod 42, extend side 43, air control valve plate 51, mating groove 511, exhaust valve plate 52,

Heat exchanger 200, indoor heat exchanger 220, restricting element 300, gas-liquid separation device 400, divides outdoor heat exchanger 210 From gas vent 401.

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, and is only used for explaining the utility model, and should not be understood as to the utility model Limitation.

In the description of the present invention, it should be understood that term " center ", " vertical ", " depth ", " width ", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outside", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " etc. refer to The orientation or positional relationship shown be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the utility model and Simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construction And operation, therefore should not be understood as limiting the present invention.In addition, define " first ", the feature of " second " can be bright Show or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple " It is meant that two or more.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition Concrete meaning in utility model.

Below with reference to Fig. 1-Fig. 2 description according to the cylinder 1 of the rotary compressor of the utility model embodiment.

According to the cylinder 1 of the rotary compressor of the utility model embodiment, as depicted in figs. 1 and 2, limited in cylinder 1 The compression chamber 11 of cooperation is rolled for roller 2 out, the peripheral wall of cylinder 1 is equipped with the sliding vane groove 113 being open towards compression chamber 11, gas The peripheral wall of cylinder 1 is equipped with the first air entry 111 being open towards compression chamber 11.Compression chamber 11 and the first air entry 111, sliding vane groove 113 be the conventional structure of existing cylinder.The difference is that the cylinder 1 of the utility model embodiment, defines on peripheral wall Plunger shaft 12, plunger shaft 12 offer communication port 123 on the inner peripheral surface of compression chamber 11.Here communication port 123 is plunger shaft 12 Towards the opening of compression chamber 11.The hole area of communication port 123 can be less than the sectional area of plunger shaft 12, the hole face of communication port 123 Product can also be equal to the sectional area of plunger shaft 12.Plunger shaft 12 can be perforation in one end far from communication port 123, live at this time Plug chamber 12 is equivalent to the through-hole on the peripheral wall of cylinder 1.Plunger shaft 12 can not also be penetrated through in one end far from communication port 123, this When plunger shaft 12 be equivalent to the blind hole on the peripheral wall of cylinder 1.As needed, the structure of plunger shaft 12 is adjustable.

Plunger shaft 12 is arranged in the peripheral wall of cylinder 1, and compression chamber 11 is still cylindrical cavity, the setting of plunger shaft 12 not shadow It rings roller 2 and makees rolling movement in compression chamber 11.Piston 4 is configured with when use in plunger shaft 12, piston 4 utilizes the rolling of roller 2 It is dynamic come it is reciprocating, thus in plunger shaft 12 achievable gas air-breathing and compression process.

Here select for plunger shaft 12 to be arranged on cylinder 1, be had because 1 wall thickness dimension of cylinder, axial dimension are larger Space is utilized enough, and piston 4 is facilitated directly to contact with roller 2.And if by the setting of plunger shaft 12 bearing or cylinder it Between middle partition on, it is clear that roller 2 will push 4 structure of piston to become complicated, be not easy to seal, and will lead to bearing or gas Cylinder needs to thicken.Equally, the first air entry 111 is retained on cylinder 1, also in that pressing in this way without changing air-breathing connecting leg structure Contracting machine is integrally changed small, and structure is improved, and cost is relatively low.

Plunger shaft 12 is set on the peripheral wall of cylinder 1, to 2 compressed gas mode of roller in compression chamber 11, compression chamber 11 into The influences such as exhaust mode, intake and exhaust period are smaller, but compressor reduced overall amount is to increase.This increase decrement Mode can reduce amount of parts, reduce compressor volume and weight for by way of increasing number of cylinders, Reduce cost.

For convenient for further understanding the principle that cylinder 1 adds decrement, the specific structure of cylinder 1 will combine compression mechanism It is explained in detail when 100 structure illustrates.

Below with reference to Fig. 1-Fig. 6 description according to the compression mechanism 100 of the rotary compressor of the utility model embodiment.

According to the compression mechanism 100 of the utility model embodiment, as shown in Figure 2, comprising: cylinder, roller 2, slide plate 3 and work Plug 4, cylinder are cylinder 1 described in above-described embodiment, and roller 2 rolls cooperation in the compression chamber 11 of cylinder 1, and slide plate 3 is reciprocally It is located in the sliding vane groove 113 of cylinder 1 to movement, the inner end of slide plate 3 is connected with roller 2.Piston 4 is reciprocally located at cylinder In 1 plunger shaft 12, the head of piston 4 can extend into compression chamber 11 and be connected with roller 2.

Here, there are many connection types of the inner end of slide plate 3 and roller 2, such as slide plate 3 as shown in Figure 2 passes through spring It is only against on the outer peripheral surface of roller 2, in another example the inner end of slide plate 3 can be directly fixedly connected on roller 2 or roller 2 Outer peripheral surface is equipped with hinged groove, and 3 inner end of slide plate cooperates in hinged groove, and 3 opposing rollers 2 of slide plate can be rotated.

When compression mechanism 100 operates, roller 2 is rolled along the inner peripheral surface of compression chamber 11, inner end and roller due to slide plate 3 2 outer peripheral surface is connected, so that slide plate 3 cooperates roller 2, by the space between the outer peripheral surface of roller 2 and the inner peripheral surface of compression chamber 11 It is divided into high pressure chest and low pressure chamber.Compression mechanism 100 has the first air entry 111 and first row port 112, and low pressure chamber is inhaled from first Gas is sucked at port 111, high pressure chest pumps out the gas of compression from first row port 112.

And the reciprocable in plunger shaft 12 of piston 4, so that the volume of plunger shaft 12 can back and forth change.Compression mechanism 100 have the second air entry 121 and second exhaust port 122 (being not shown in Fig. 2), plunger shaft 12 and the second air entry 121, second Exhaust outlet 122 is connected, and gas can be sucked from the second air entry 121 when 12 internal volume of plunger shaft becomes larger, when in plunger shaft 12 The gas of boosting can be discharged from second exhaust port 122 when becoming smaller for volume.Plunger shaft 12 is arranged in the peripheral wall of cylinder 1, closes The axial height of compression mechanism 100 is not will increase under the premise of reason setting, and the wall thickness dimension of cylinder 1 itself is larger, sets herein Setting 12 volume of plunger shaft can satisfy demand.

Since the head of piston 4 is connected with roller 2, during roller 2 rolls in compression chamber 11, roller 2 can To be pressed on piston 4, enable piston 4 towards 12 internal slide of plunger shaft and compressed gas.Here, piston 4 is to plunger shaft 12 The dynamic structure of internal slide has determined and (suppressed and moved by roller 2), and what piston 4 slid in and out inside plunger shaft 12 Dynamic structure is with no restriction.For example, the head of piston 4 can be rotatably connected on roller 2, it will in another example being equipped in plunger shaft 12 Piston 4 is towards the spring etc. pushed inside compression chamber 11.Further for example, piston 4 can also drive by two sides pressure difference, work as compression When 11 air pressure of chamber is smaller, piston 4 can between plunger shaft 12 and compression chamber 11 pressure difference driving under, to the inside of compression chamber 11 Sliding.Certainly, piston 4, slide plate 3 and the connection type needs of roller 2 comprehensively consider, and cannot interfere.

It will be clear that piston 4 and slide plate 3 are different structure, every increasing in cylinder 1 in the utility model embodiment Add a slide plate 3,3 two sides of slide plate need to add the first air entry 111 and first row port for passing in and out gas to compression chamber 11 112.And the setting of piston 4 need to be added for the second air entry 121 to the disengaging gas of plunger shaft 12, second exhaust port 122.Slide plate 3 with the cooperation purpose of roller 2, be for be divided into the space between 11 inner peripheral surface of 2 outer peripheral surface of roller and compression chamber high pressure chest and low Chamber is pressed, and the setting of piston 4 is not involved in the division of high pressure chest and low pressure chamber.

Since cylinder 1 is separately provided with plunger shaft 12 at independently of compression chamber 11, the gas compression of plunger shaft 12 is to pass through What the reciprocating motion of piston 4 was completed, the reciprocating motion of piston 4 is driven by roller 2 to be completed.Here, the movement of piston 4 does not influence to roll The movement of son 2, does not influence the suction and discharge period of compression chamber 11, does not need to make complicated suction and discharge channel.

The compression mechanism 100 of the utility model embodiment, breaches the pump body structure of existing rotary compressor, makes former single The compression of a cylinder body is able to achieve the compression of at least two cylinder bodies, completes the combined compression that the main body pump housing carries small pump. Plunger shaft 12 is formed using cylinder 1, i.e., constitutes compression chamber using existing part, it is compact-sized, reduce amount of parts, has Conducive to compressor volume and weight is reduced, cost is substantially reduced.

The compression mechanism 100 of the utility model embodiment is applied to independent compression, twin-tub compression, transfiguration compression etc. In the compressor of compression function.The application of a variety of compression types may be implemented, reduce compressor cost.Compression mechanism 100 is in work The intake and exhaust of plunger shaft 12 can be made directly to communicate with compressor external component with external suction and discharge channel on plug chamber 12.Compressor Structure 100 can also be by suction feed channel built in cylinder channel, and the gas for enabling plunger shaft 12 to compress leads to the first air entry 111, or the gas of the compression of compression chamber 11 is enable to lead to the second air entry 121, realize Two-stage Compression.

Specifically, as depicted in figs. 1 and 2, the center line of the central axes of the first air entry 111 and plunger shaft 12 is located at same In plane.Generally it is exactly, when the axis of compression chamber 11 is vertically arranged, the center of the first air entry 111 and plunger shaft 12 On sustained height.It is appreciated that piston 4, which moves back and forth, still has certain impact power to cylinder 1, roller 2, therefore by plunger shaft 12 are provided with centre, are conducive to improve performance.

In some embodiments, radial direction of the plunger shaft 12 with the shape of communication port 123 along compression chamber 11 penetrates through.Due to Piston 4 moves back and forth in plunger shaft 12 completes compression work, therefore needs to guarantee between the inner wall of plunger shaft 12 and piston 4 It is fitted close, avoids collaborating between plunger shaft 12 and compression chamber 11.It is smooth between plunger shaft 12 and the contact surface of piston 4 to guarantee Degree and tightness, and in order to reduce frictional heat generation, it is higher to the requirement on machining accuracy of the inner wall of plunger shaft 12.And by piston Chamber 12 is made can substantially reduce with the consistent through hole of 123 shape of communication port, the difficulty of processing of cylinder 1.

In some embodiments, communication port 123 closes on the setting of the first air entry 111, here communication port 123 and the first air-breathing Mouth 111 is arranged at the same side of sliding vane groove 113, and the other side of slide plate 3 is arranged in first row port 112.

It is understood that being that line contacts between the outer peripheral surface of roller 2 and the inner peripheral surface of compression chamber 11, to be continued convenient for after Bright, the contact line between the outer peripheral surface of roller 2 and the inner peripheral surface of compression chamber 11 is referred to as separator bar.Due to the communication port of plunger shaft 12 123 are arranged on the inner peripheral surface of compression chamber 11, therefore when separator bar activity is at communication port 123, roller 2 can not be by separator bar Two sides separate stuffiness.

For the example shown in Fig. 2,2 roll counter-clockwise of roller is set gradually on the peripheral wall of cylinder 1 in the counterclockwise direction There are first row port 112, sliding vane groove 113, the first air entry 111 and communication port 123.First air entry 111 and communication port 123 it Between region be equivalent to " dead zone ".Specifically, that is, separator bar is located at the first air-breathing when roller 2 turns over the first air entry 111 Between mouth 111 and communication port 123, the led to side of the first air entry 111 is low pressure chamber, and the led to side of communication port 123 is high pressure chest. When roller 2 continues to rotate counterclockwise, continuation air-breathing in low pressure chamber, high pressure intracavity gas continues compression, air pressure rises.But works as and divide When line reaches at communication port 123, separator bar two sides can be connected to by communication port 123, and gas compressed can flow back in high pressure chest To low pressure chamber, inspiratory capacity is caused to reduce, and separator bar is in this Partial angle Jing Guo communication port 123, the rolling pressure of roller 2 Contracting be it is invalid, acting waste, efficiency can decline.

And communication port 123 is closed on into the first air entry 111 and is arranged, then it can be reduced this partial loss.This is because when connection Mouth 123 closes on the first air entry 111, and when separator bar is located between communication port 123 and the first air entry 111, high pressure chest is just opened Begin to compress, air pressure is relatively small.Later when separator bar passes through communication port 123, low pressure is flowed to from high pressure chest by communication port 123 The gas of chamber is few, and the pressure loss is few, can also reduce to the inspiratory capacity loss of low pressure chamber.

In addition, cylinder 1 has thickened wall 13, the first air entry in the part of setting sliding vane groove 113 in the embodiment having 111 close on the setting of sliding vane groove 113, therefore communication port 123 are closed on the first air entry 111 and is arranged, and plunger shaft 12 can be by adding Heavy wall 13 and volume increase.Even if the swept volume of plunger shaft 12 not can increase, the setting of the intake and exhaust structure of plunger shaft 12 It can be easy many.

Specifically, as shown in Fig. 2, the first air entry 111 can be between communication port 123 and sliding vane groove 113, such as Fig. 3 It is shown, communication port 123 can also can reduce between the first air entry 111 and sliding vane groove 113, in the case of two kinds pressure, Inspiratory capacity loss, improves overall performance.

Further, as depicted in figs. 1 and 2, the inner peripheral surface of compression chamber 11 be equipped with connectivity slot 124, the one of connectivity slot 124 End extends to the first air entry 111, and the other end of connectivity slot 124 extends to communication port 123.I.e. when separator bar moves to the first suction When between port 111 and communication port 123, due to the setting of connectivity slot 124, separator bar two sides are connections.So as to further Reduce acting loss, reduces inspiratory capacity loss.

Still shown in Fig. 2 for example, the setting of the connectivity slot 124 becomes separator bar counterclockwise from the first air entry 111 During changing to communication port 123, roller 2 will not remove the gas in compression compression chamber 11.Since by connectivity slot 124, compression Gas can not form closed compression space in chamber 11, therefore cannot compress.Only when roller 2 turns over the communication port of plunger shaft 12 After 123, closed high pressure chest just will form.After separator bar turns over communication port 123, the gas of compression chamber 11 since this angle Pressure just starts to increase.It is being formed between closed high pressure chest in this way, is not having high pressure gas and flow back into the first air entry 111, It will not influence gas freely to move, not will receive the resistance of oil.And 124 sectional area of connectivity slot it is larger when air velocity it is small, The pressure loss is small, the effective efficiency for guaranteeing compressor.

Optionally, the width (i.e. size of the connectivity slot 124 in the axial direction of compression chamber 11) of connectivity slot 124 is greater than cylinder 1 Height (size i.e. in 1 axial direction of cylinder) 30%, the depth of connectivity slot 124 is more than or equal to 0.5mm.Setting guarantees foot in this way Enough ventilatory capacities, reduce crushing.

Optionally, plunger shaft 12 is circular cavity, and piston 4 is the cylinder to match.Fitting surface is processed well in this way, is conducive to Improve assembly precision.And circular plunger shaft 12 is larger in receiving, and the exhaust decrement of plunger shaft 12 is considerable.

In the example depicted in fig. 4, piston 4 includes capping 41, piston rod 42, extends side 43, capping 41 and plunger shaft 12 Shape be adapted, capping 41 be used for sealing piston chamber 12.The connection of piston rod 42 capping 41, piston rod 42 is used for and 2 phase of roller Even, chamfering can be set out in the end face edge of piston rod 42, to reduce contact friction.The end face of piston rod 42 also can be set into Hemisphere face keeps the contact stress between roller 2 more uniform.Extend edge and housing piston rod 42 that side 43 is connected to capping 41, Extension edge 43 is provided with the tightness for being conducive to improve plunger shaft 12.

The shape of the plunger shaft 12 of certain the utility model embodiment is without being limited thereto, such as shown in figure 5, plunger shaft 12 can For rectangular cavity, piston 4 is the square plate to match.Wherein, certainly, the front end of square plate is formed as arcwall face, buffering and rolling The contact of son 2.In the case where designing needs, plunger shaft 12 can also be other shapes.

In addition in the example of fig. 1, for cylinder 1 at 12 formation of plunger shaft, peripheral wall is still complete annular.But it does not also arrange Except plunger shaft 12 is towards the open structure in the end face side of cylinder 1 or two sides, rationally can be achieved the case where sealing.

In some embodiments, as shown in fig. 6, compression mechanism 100 further include: air control valve plate 51, air control valve plate 51 are located at With closed piston chamber 12 on the periphery wall of cylinder 1, air control valve plate 51 is equipped with the second air entry 121 and the of connection plunger shaft 12 Two exhaust outlets 122.The structure of cylinder 1 in this way is simplified, and processing is more easier.

Specifically, as shown in fig. 6, compression mechanism 100 further includes exhaust apparatus, exhaust apparatus is located on air control valve plate 51, Exhaust apparatus is used to control the switch of second exhaust port 122.

In a kind of optional way, exhaust apparatus may include exhaust pipe and the Pneumatic valve that is connected in exhaust pipe.

In another optional way, as shown in fig. 6, as figure air control valve plate 51 is equipped with mating groove 511, mating groove 511 Bottom wall be equipped with second exhaust port 122, exhaust apparatus includes the exhaust valve plate 52 being located in mating groove 511.Here by row Air valve plate 52 controls the exhaust of plunger shaft 12, can make just to start to be vented when air pressure reaches setting air pressure in plunger shaft 12.It is this Pressure control mode, structure is simple, high reliablity.And the setting of mating groove 511 limits the scope of activities of exhaust valve plate 52, to exhaust Valve block 52 has protective effect.

Certainly, inlet duct also can be set in compression mechanism 100, inlet duct is arranged on air control valve plate 51, is used for Control the switch of the second air entry 121.Here inlet duct may include the check valve for controlling air inlet, also may include into Air valve plate, here with no restriction.

If compression mechanism 100 is two-stage compression, can be the second air entry of first row port 112 and plunger shaft 12 121 connections carry out second-compressed then when the exhaust of compression chamber 11 is discharged in plunger shaft 12.Likewise, working as new type of compression mechanism 100, there are 2 even 3 piston reciprocating type structures when two rotary compression chambers 11, can be set, realize multi-stage compression.Such as Fruit is integrated to air-conditioner system, it might even be possible to realize multi-stage compression and independent compression function together.

Referring to Fig. 2 and Fig. 6 description according to the rotary compressor 100A of the utility model embodiment.

According to the rotary compressor 100A of the utility model embodiment, comprising: shell and compression mechanism 100, shell tool There are the first gas outlet 101, the first gas returning port 102, the second gas outlet 103 and the second gas returning port 104.Compression mechanism 100 is this reality The compression mechanism 100 described in novel above-described embodiment, which is not described herein again for the structure of compression mechanism 100, and compression mechanism 100 is set In shell.

Wherein, the first gas outlet 101 is used to that the gas compressed in compression chamber 11 in compression mechanism 100, the first return-air to be discharged Mouth 102 is for 11 air inlet of compression chamber, the second gas outlet 103 to be used to that the gas compressed in plunger shaft 12 in compression mechanism 100 to be discharged Body, the second gas returning port 104 are used for 12 air inlet of plunger shaft.

Certainly, in the rotary compressor 100A of the utility model embodiment, shell is closing shell, and compressor further includes The interior electric machine assembly in the shell, the rotor in electric machine assembly are connected by crankshaft with the roller 2 in compression mechanism 100, turn Turn is dynamic to drive roller 2 to rotate.

Using the setting of compression mechanism 100, the capacity of rotary compressor 100A can be increased, while zero can be reduced Number of packages amount reduces compressor volume and weight, substantially reduces cost.

Specifically, rotary compressor 100A can be single cylinder compressor, and rotary compressor 100A can be duplex cylinder compressor, Rotary compressor 100A can be multicylinder compressor.Rotary compressor 100A can be invariable frequency compressor, rotary compressor 100A can be frequency-changeable compressor.

Referring to Fig. 2 and Fig. 7 description according to the heat pump assembly 1000 of the utility model embodiment.

According to the heat pump assembly 1000 of the utility model embodiment, as shown in fig. 7, comprises: rotary compressor 100A, two 200, two restricting elements 300 of a heat exchanger and gas-liquid separation device 400.Rotary compressor 100A is the rotation of above-described embodiment The structure of rotary compressor 100A, rotary compressor 100A it is stated that, which is not described herein again.Here, heat pump assembly 1000 can For single cooler, heat pump assembly 1000 can also be air conditioner.Hereafter it is illustrated by taking single cooler shown in Fig. 7 as an example, and changes in temperature Thus the case where machine, can unquestionably be derived, no longer separately state herein.

As shown in fig. 7, be connected between two heat exchangers 200, (i.e. an outdoor heat exchanger in two heat exchangers 200 210) the first gas outlet 101 is connected, another connection first of another (i.e. indoor heat exchanger 220) in two heat exchangers 200 Gas returning port 102.Two restricting elements 300 are connected in series between two heat exchangers 200, and gas-liquid separation device 400 is connected in series Between two restricting elements 300, gas-liquid separation device 400 has separated gas outlet 401, and separated gas outlet 401 connects Second gas returning port 104, the second gas outlet 103 connect 200 (the i.e. outdoor heat exchanger of heat exchanger being connected with the first gas outlet 101 210)。

That is, in heat pump assembly 1000 gas-liquid separation device 400 will flow through the refrigerant of a restricting element 300 into Row gas-liquid separation, the gas after separation return in rotary compressor 100A, rather than enter in another heat exchanger 200 and do nothing Hard, the efficiency of heat pump assembly 1000 is improved in this way.

Wherein, the separated gas outlet 401 of the second air entry 121 connection gas-liquid separation device 400 of plunger shaft 12, piston The refrigerant of the sucking of chamber 12 intermediate pressure Pm.As shown in Fig. 2, plunger shaft 12 starts to suck gas when roller 2 turns over plunger shaft 12 Body, pressure of inspiration(Pi) Pm is greater than the pressure of inspiration(Pi) Ps of compression chamber 11 at this time, and the piston 4 of plunger shaft 12 can be pushed toward cylinder axis It walks, then roller 2 is close on its head.After roller 2 is gone to farthest away from plunger shaft 12,12 aspiratory action of plunger shaft terminates, piston Chamber 12 starts to compress, and the piston 4 that roller 2 pushes plunger shaft 12 at this time back moves (far from cylinder axis).It is vented when being compressed to The exhaust valve plate 52 of second exhaust port 122 is opened after pressure Pd, and gas is discharged to compressor housing or directly row from exhaust apparatus To 210 front end pipeline of outdoor heat exchanger.

This energy-efficient compress mode reduces amount of parts, substantially reduces cost.

According to the composition of the heat pump assembly 1000 of the utility model embodiment such as heat exchanger 200, restricting element 300, gas Liquid/gas separator etc. and operation be all for those of ordinary skills it is known, be not detailed herein.

In the description of this specification, the description of reference term " embodiment ", " example " etc. mean combine the embodiment or Example particular features, structures, materials, or characteristics described are contained at least one embodiment or example of the utility model. In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.Moreover, description Particular features, structures, materials, or characteristics can be tied in an appropriate manner in any one or more of the embodiments or examples It closes.

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 cylinder of rotary compressor, the compression chamber for roller rolls cooperation, the gas are limited in the cylinder The peripheral wall of cylinder is equipped with the sliding vane groove being open towards the compression chamber, which is characterized in that the peripheral wall of the cylinder is equipped with first Air entry limits plunger shaft, plunger shaft company of offering on the inner peripheral surface of the compression chamber on the peripheral wall of the cylinder Port.

2. the cylinder of rotary compressor according to claim 1, which is characterized in that the plunger shaft is with the communication port Shape penetrated through along the radial direction of the compression chamber.

3. the cylinder of rotary compressor according to claim 1, which is characterized in that the central axes of first air entry It is in the same plane with the center line of the plunger shaft.

4. the cylinder of rotary compressor according to claim 1, which is characterized in that the plunger shaft is adjacent to described first Air entry setting, first air entry is between the communication port and the sliding vane groove or the communication port is located at institute It states between the first air entry and the sliding vane groove.

5. the cylinder of rotary compressor according to claim 1, which is characterized in that set on the inner peripheral surface of the compression chamber There is connectivity slot, one end of the connectivity slot extends to first air entry, and the other end of the connectivity slot extends to the company Port.

6. the cylinder of rotary compressor according to claim 5, which is characterized in that the connectivity slot is in the compression chamber Axial direction on size be greater than the 30% of the cylinder height, the depth of the connectivity slot is more than or equal to 0.5mm.

7. a kind of compression mechanism characterized by comprising

Cylinder, the cylinder are according to cylinder of any of claims 1-6；

Roller, the roller rolls cooperation is in the compression chamber of the cylinder；

Slide plate, the slide plate are reciprocally located in the sliding vane groove of the cylinder, the inner end of the slide plate and the roller It is connected；

Piston, the piston are reciprocally located in the plunger shaft of the cylinder, and the head of the piston can extend into institute It states in compression chamber and is connected with the roller.

8. compression mechanism according to claim 7, which is characterized in that further include:

Air control valve plate, the air control valve plate are located on the periphery wall of the cylinder to close the plunger shaft, the air control valve plate It is equipped with the second air entry and second exhaust port for being connected to the plunger shaft；

Exhaust apparatus, the exhaust apparatus are located on the air control valve plate, and the exhaust apparatus is for controlling the second exhaust The switch of mouth.

9. compression mechanism according to claim 8, which is characterized in that the air control valve plate is equipped with mating groove, described to match The bottom wall for closing slot is equipped with the second exhaust port, and the exhaust apparatus includes the exhaust valve plate being located in the mating groove.

10. compression mechanism according to claim 7, which is characterized in that the plunger shaft is circular cavity, and the piston is phase Matched cylinder；Alternatively, the plunger shaft is rectangular cavity, the piston is the square plate to match.

11. a kind of rotary compressor characterized by comprising

Shell, the shell have the first gas outlet, the first gas returning port, the second gas outlet and the second gas returning port；And

Compression mechanism, the compression mechanism are the compression mechanism according to any one of claim 7-10, the compressor Structure is located in the shell；Wherein,

First gas outlet is used to that the gas compressed in compression chamber in the compression mechanism to be discharged, and first gas returning port is used for To the compression chamber air inlet, second gas outlet is used to be discharged the gas compressed in plunger shaft in the compression mechanism, described Second gas returning port is used for the plunger shaft air inlet.

12. rotary compressor according to claim 11, which is characterized in that the rotary compressor is single cylinder compression Machine or duplex cylinder compressor or multicylinder compressor.

13. a kind of heat pump assembly characterized by comprising

Rotary compressor, the rotary compressor are the rotary compressor according to claim 11 or 12；

Two heat exchangers are connected between described two heat exchangers, connection first outlet in described two heat exchangers Mouth, another described first gas returning port of connection；

Two restricting elements, described two restricting elements are connected in series between described two heat exchangers；

Gas-liquid separation device, the gas-liquid separation device are connected in series between two restricting elements, the gas-liquid separation Device has separated gas outlet, and the separated gas outlet connects second gas returning port；And

Second gas outlet connects the heat exchanger being connected with first gas outlet.