CN209129854U - Rotary compressor, gas compression system, refrigeration system and heat pump system - Google Patents

Abstract

The utility model discloses a kind of rotary compressor, gas compression system, refrigeration system and heat pump system, rotary compressor includes: cylinder, and cylinder is equipped with sliding vane groove；Slide plate, slide plate are installed on sliding vane groove；The cam part of cam mechanism, cam mechanism is rotatably provided in cylinder；Piston shoes, piston shoes include connected piston shoes head and piston shoes end, piston shoes head has hinged face, the apex of slide plate has open slot, and hingedly so that piston shoes head and slide plate swing and connect, piston shoes end presses on the periphery of cam part for hinged face and open slot, piston shoes are θ relative to the limit swing angle of the median plane of sliding vane groove, the opening angle of open slot is γ, and the central angle in hinged face is β, is met: 2 θ of γ-(360 ° of-β) >.The rotary compressor of the utility model greatly reduces the friction power loss between slide plate cam part friction pair, and can guarantee that piston shoes are not interfered with sliding vane groove, and the reliability of rotary compressor is greatly improved.

Description

Rotary compressor, gas compression system, refrigeration system and heat pump system

Technical field

The utility model belongs to compressor manufacturing technical field, in particular to a kind of rotary compressor, has and is somebody's turn to do The gas compression system of rotary compressor, the refrigeration system with the rotary compressor and with the rotary compressor Heat pump system.

Background technique

In compressor means, the friction loss between the apex of slide plate and the periphery of piston is larger.In order to reduce this Friction loss installs needle roller in the apex of slide plate, the purpose of the structure is by the sliding between piston and slide plate in the related technology Friction becomes rolling friction, and friction power loss is effectively reduced.But requirement of the needle roller structure to reliability is high, due to needle roller Contact stress between piston sharply becomes larger, and proposes challenge to the wearability of needle roller material, and needle roller structure is easy Existing needle roller rolls the risk of stuck failure, once needle roller rolls failure, needle roller will occur sharply to wear, until compressor is stuck Failure, there are rooms for improvement.

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 The secondary friction power loss of slide plate cam part friction of a kind of rotary compressor out, the rotary compressor is small.

According to the rotary compressor of the utility model embodiment, comprising: cylinder, the cylinder are equipped with sliding vane groove；Slide plate, The slide plate is installed on the sliding vane groove；Cam mechanism, the cam part of the cam mechanism are rotatably provided in the cylinder； Piston shoes, the piston shoes include connected piston shoes head and piston shoes end, and the piston shoes head has hinged face, the elder generation of the slide plate End is with open slot, and the hinged face and the open slot are hingedly so that the piston shoes head and the slide plate swing connection, institute The periphery that piston shoes end presses on the cam part is stated, the limit of median plane of the piston shoes relative to the sliding vane groove is swung Angle is θ, and the opening angle of the open slot is γ, and the central angle in the hinged face is β, is met: 2 θ of γ-(360 ° of-β) >.

According to the rotary compressor of the utility model embodiment, slide plate apex and cam part periphery are significantly improved The stress of contact improves the lubricating status between slide plate and cam part friction pair, greatly reduces slide plate cam part friction Friction power loss between pair, and can guarantee that piston shoes are not interfered with sliding vane groove, the reliability of rotary compressor obtains greatly It improves, and the structure of the piston shoes is simple, low in cost, effect is good.

According to the rotary compressor of the utility model one embodiment, the piston shoes further include being connected to the piston shoes head The width of piston shoes neck between portion and the piston shoes end, the piston shoes neck is less than the piston shoes head and the piston shoes end The width in portion.

According to the rotary compressor of the utility model one embodiment, the open slot is arc, and is met: γ < 180°。

According to the rotary compressor of the utility model one embodiment, a length of L of the swing arm of the piston shoes, the hinged face Diameter be d, the width of the slide plate is T, is met: d≤L≤T.

According to the rotary compressor of the utility model one embodiment, a length of L of the swing arm of the piston shoes, the cylinder Internal diameter is D, and the limit eccentricity of the cam mechanism is e, is met: sin θ=e/ (0.5D+L-e).

According to the rotary compressor of the utility model one embodiment, the piston shoes end has described convex for compressing Wheel portion compresses face, and the face that compresses is one of arcwall face or plane.

According to the rotary compressor of the utility model one embodiment, the face that compresses is arc-shaped surface, and described is supported The periphery inscribe of pressure surface and the cam surface.

The utility model also proposed a kind of gas compression system, with rotary compressor described in any of the above-described kind.

The utility model also proposed a kind of refrigeration system, with rotary compressor described in any of the above-described kind.

The utility model also proposed a kind of heat pump system, with rotary compressor described in any of the above-described kind.

The gas compression system, the refrigeration system, the heat pump system and above-mentioned rotary compressor relative to Advantage possessed by the prior art is identical, and details are not described herein.

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 structural schematic diagram according to the rotary compressor of the utility model embodiment；

Fig. 2 is the end view drawing according to the rotary compressor of the utility model one embodiment at cylinder；

Fig. 3 and Fig. 4 is the partial enlarged view in Fig. 2 at A, and respectively illustrates a kind of escape groove of structure type；

Fig. 5 is the structural schematic diagram according to the slide plate of the utility model one embodiment；

Fig. 6 is the structural schematic diagram according to the piston shoes of the utility model one embodiment；

Fig. 7 is the structural schematic diagram according to the slide plate of the utility model another embodiment；

Fig. 8 is the structural schematic diagram according to the piston shoes of the utility model another embodiment；

Fig. 9 is the end view drawing according to the rotary compressor of the utility model another embodiment at cylinder；

Figure 10 is the partial enlarged view in Fig. 9 at B；

Figure 11 is the partial structural diagram according to the slide plate of the utility model one embodiment；

Figure 12 is the structural schematic diagram according to the piston shoes of the utility model one embodiment；

Figure 13 is the end view drawing according to the rotary compressor of the utility model further embodiment at cylinder；

Figure 14 is the partial enlarged view in Figure 13 at C；

Figure 15 is the partial structural diagram according to the slide plate of the utility model one embodiment；

Figure 16 and Figure 17 is the structural schematic diagram according to the piston shoes of the utility model embodiment；

Figure 18 is structure when moving to the position that notch is connected to compression chamber according to the piston shoes of the utility model embodiment Schematic diagram.

Appended drawing reference:

Cylinder 10, sliding vane groove 13, escape groove 14, the first inner wall 14a, the second inner wall 14b are oriented to inner wall 14c,

Cam mechanism 30, crankshaft 31, piston 32,

Slide plate 40, open slot 41,

Piston shoes 50, piston shoes head 51, hinged face 52, notch 53, piston shoes end 54, the first outside wall surface 54a, the second outside wall surface 54b, compresses face 55, piston shoes neck 56,

Rotor 61, stator 62, base bearing 63, supplementary bearing 64, body 71, upper housing 72, lower case 73.

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 ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " 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 " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.

Embodiment one

It describes below with reference to Fig. 1-Figure 18 according to the utility model embodiment rotary compressor, the rotary compressor packet It includes: casing, stator 62, rotor 61, cam mechanism 30, cylinder 10, base bearing 63, supplementary bearing 64, slide plate 40 and piston shoes 50.

Wherein, with reference to Fig. 1, casing may include body 71, upper housing 72, lower case 73, stator 62, rotor 61, cam Mechanism 30, cylinder 10, base bearing 63, supplementary bearing 64, slide plate 40 and piston shoes 50 may be mounted in casing.

Rotor 61 is connected with cam mechanism 30, rotates for driving cam means 30, base bearing 63, supplementary bearing 64 are set respectively Limit compression chamber between the upper and lower surfaces of cylinder 10, cylinder 10, base bearing 63 and supplementary bearing 64, cam mechanism 30 it is convex Wheel portion is rotatably provided in cylinder 10.

As shown in Fig. 2, piston 32 is set in crankshaft 31 in the embodiment that cam mechanism 30 includes crankshaft 31 and piston 32 Eccentric part outside, the cam part of cam mechanism 30 includes piston 32, and piston 32 is rotatably provided in cylinder 10, and piston 32 is in song It is rotatably fitted in compression chamber under the driving of axis 31.Certainly, cam mechanism 30 or integral type.

As shown in Figure 3, Figure 4, cylinder 10 is equipped with sliding vane groove 13 and escape groove 14, and slide plate 40 is installed on sliding vane groove 13, slide plate Slot 13 can radially extending along cylinder 10, slide plate 40 in sliding vane groove 13 move.

The one end of sliding vane groove 13 being connected with the compression chamber of cylinder 10 is arranged in escape groove 14, and escape groove 14 is arranged in slide plate The inner end of slot 13, escape groove 14 are connected to sliding vane groove 13, and in Fig. 3 and embodiment shown in Fig. 4, escape groove 14 can be opening The size of formula, escape groove 14 gradually becomes smaller from one end far from sliding vane groove 13 to the one end being connected with sliding vane groove 13.Escape groove 14 For accommodating piston shoes 50, the structure of escape groove 14 can correspond to design according to the structure of piston shoes 50.

As shown in Fig. 3, Fig. 4, Fig. 6, Fig. 8, piston shoes 50 include piston shoes head 51 and piston shoes end 54, piston shoes head 51 and cunning Boots end 54 is connected, for example piston shoes head 51 can be integrally formed with piston shoes end 54, or is connected by connection types such as welding.

Piston shoes head 51, which is swung, is connected to the apex of slide plate 40, and the apex of piston shoes head 51 and slide plate 40 is around first axle string pendulum Dynamic connection, first axle is parallel with the axis of cylinder 10, and the apex of piston shoes head 51 and slide plate 40 forms sliding friction pair, piston shoes End 54 compresses the periphery of cam part, in the rotary compressor course of work, the outer circle of piston shoes end 54 and cam part It is slidably matched between face, forms sliding friction pair.

It should be noted that the apex of slide plate 40 refers to that slide plate 40 extend into the cam part in compression chamber close to cam mechanism 30 One end of the periphery of (piston 32).Piston shoes head 51 and the apex of slide plate 40 offset, piston shoes end 54 and cam mechanism 30 The periphery of cam part (piston 32) offsets.Piston shoes end 54, which has, compresses face 55, compresses the periphery that face 55 compresses cam part.

In the rotary compressor course of work, slide plate 40 is reciprocating along sliding vane groove 13, and piston shoes 50 compress convex always The periphery of wheel portion (piston 32), piston shoes 50 are swung around first axle relative to slide plate 40, and piston shoes 50 are being parallel to 10 end of cylinder The direction in face is swung.

It is understood that by between slide plate 40 and cam part be arranged piston shoes 50, can substantially reduce slide plate 40 with Contact stress between cam part, lubricating status become hydrldynamic pressure lubrication from original boundary lubrication substantially, and friction power loss obtains Cooling capacity leakage to being effectively reduced, and between slide plate 40 and cam part also reduces.

As shown in Figure 3 and Figure 4, when slide plate 40 is in top dead centre, the wall surface of escape groove 14 is located at piston shoes end 54 It is at least partly outer, that is to say, that the shape of the wall surface of escape groove 14 can be with the shape substantially class of the outside wall surface of piston shoes end 54 Seemingly, in this way when slide plate 40 moves to top dead center position, the clearance between escape groove 14 and piston shoes end 54 is small, subtracts as much as possible Small compression chamber clearance volume avoids compressing in vain, greatly improves the performance of compressor.

As shown in Figure 3 and Figure 4, when slide plate 40 is in top dead centre, the wall surface of escape groove 14 is spaced apart with piston shoes end 54. It can guarantee that piston shoes 50 and the sliding vane groove 13 of cylinder 10 are not interfered in this way, so that its reliability is greatly improved.Some In embodiment, when slide plate 40 is in top dead centre, the minimum clearance between piston shoes end 54 and the wall surface of escape groove 14 is δ, full Foot: δ >=0.1mm, such as δ=0.2mm.

According to the rotary compressor of the utility model embodiment, 40 apex of slide plate and cam part outer circle are significantly improved The stress of face contact improves the lubricating status between slide plate 40 and cam part friction pair, greatly reduces 40 cam of slide plate Friction power loss between portion's friction pair reduces compression under the premise of guaranteeing that piston shoes 50 and sliding vane groove 13 are not interfered as much as possible Chamber clearance volume avoids compressing in vain, greatly improves the performance of compressor, and the reliability of rotary compressor obtains greatly It improves, and the structure of the piston shoes 50 is simple, low in cost, effect is good.

In some embodiments, as shown in Figures 3 and 4, the close compression chamber side (right side in Fig. 3 and Fig. 4) of escape groove 14 Wall surface include the first inner wall 14a being sequentially connected from sliding vane groove 13 to compression chamber and the second inner wall 14b, the first inner wall 14a's is connected away from second one end inner wall 14b with sliding vane groove 13, and the second inner wall 14b's deviates from first one end inner wall 14a Compression chamber is extended to, when slide plate 40 is in top dead centre, the angle of the median plane of the first inner wall 14a and sliding vane groove 13 is α 1, The angle of the plane of symmetry of second inner wall 14b and sliding vane groove 13 is α 2, is met: 90 ° of 2 < α of α, 1 <.

That is, the second inner wall 14b is shunk inwardly relative to the first inner wall 14a, second sidewall can reduce Gap at face.It is understood that the high pressure refrigerant after having compressed can remain in escape groove 14, evacuation is especially remained in A part of the close compression chamber side of slot 14 occupies 10 internal volume of cylinder after high pressure refrigerant expansion, inspiratory capacity is reduced, to reduce Compressor efficiency, the escape groove 14 by the way that above structure form is arranged can reduce compression chamber clearance volume.

It as shown in Figures 3 and 4, can be by being oriented to inner wall 14c phase between the first inner wall 14a and the second inner wall 14b It even, can by setting guiding inner wall 14c since the tilt angle between the first inner wall 14a and the second inner wall 14b is larger It is concentrated with reducing the stress at this, reduces difficulty of processing, the first inner wall 14a and the second inner wall 14b are planar shaped, guiding Inner wall 14c is arc.

As shown in Figures 3 and 4, the outer end of piston shoes end 54 is connected with piston shoes head 51, and the inner end of piston shoes end 54, which has, to be supported Be pressed on the periphery of cam part compresses face 55, has the first outer wall being sequentially connected between the outer end and inner end of piston shoes end 54 Face 54a and the second outside wall surface 54b；First inner wall 14a extends in the same direction with the first outside wall surface 54a and is spaced apart setting, in first Wall surface 14a and the first outside wall surface 54a can be arranged in parallel or general parallel orientation setting, the second inner wall 14b and the second outside wall surface 54b It extends in the same direction and is spaced apart setting.This design method can reduce compression chamber clearance volume, and prevent piston shoes 50 and sliding vane groove 13 interference.

In the embodiment shown in fig. 3, the wall surface of the close compression chamber side (right side in Fig. 3 and Fig. 4) of escape groove 14 with The wall surface of the close suction chamber side (left side in Fig. 3 and Fig. 4) of escape groove 14 is symmetrical arranged about the median plane of sliding vane groove 13.? That is escape groove 14 is symmetricly set on 13 two sides of sliding vane groove, the design of such escape groove 14 is simple, easy to process.

In the embodiment shown in fig. 4, escape groove 14 is asymmetric is arranged in 13 two sides of sliding vane groove, as shown in figure 4, escape groove The width of the wall surface of 14 close compression chamber side is less than the width of the wall surface of the close suction chamber side of escape groove 14, that is to say, that The region of the compression chamber side of escape groove 14 is smaller, can reduce compression chamber clearance volume.

Accordingly, piston shoes end 54 asymmetric can also be arranged, and the inner end of piston shoes end 54, which has, presses on cam part Periphery compresses face 55, and when slide plate 40 is in top dead centre, the width for compressing the part of the close compression chamber side in face 55 is less than Compress the width of the part of the close suction chamber side in face 55.

Compress face 55 can for arc, and compress face 55 at least partly with the periphery inscribe of cam part.In this way, slide plate Contact between 40 and cam part becomes inscribe from original circumscribed contact and contacts, and friction power loss is effectively reduced, and sliding Cooling capacity leakage between piece 40 and piston 32 also reduces.

Certainly, face 55 or plane are compressed.Piston shoes 50 are easy to process in this way, and relative to needle roller in the related technology Structure, can also reduction contact stress by a relatively large margin.

As shown in figure 4, the wall surface of the close suction chamber side of escape groove 14 is planar shaped, and inner wall and pressure with escape groove 14 The inner wall of contracting chamber is formed as obtuse angle, and the wall surface of the close suction chamber side of escape groove 14 is inclined inclined-plane.

As shown in Figure 5-Figure 8, one in the apex of slide plate 40 and piston shoes head 51 is equipped with the open slot 41 of arc, another A hinged face 52 including arc, hinged face 52 is hinged with open slot 41 so that piston shoes head 51 and slide plate 40 swing and connect.? In Fig. 5 and embodiment shown in fig. 6, the apex of slide plate 40 is equipped with the open slot 41 of arc, and piston shoes head 51 includes the hinge of arc Junction 52；In Fig. 7 and embodiment shown in Fig. 8, piston shoes head 51 is equipped with the open slot 41 of arc, and the apex of slide plate 40 includes The hinged face 52 of arc.The radian of open slot 41 is greater than 180 °, and the radian in hinged face 52 is greater than 180 °, and the radian in hinged face 52 is big In the radian of open slot 41.It in this way can anti-slip limiting plate 40 and the disengaging of piston shoes 50.

Embodiment two

It describes below with reference to Fig. 1-Figure 18 according to the utility model embodiment rotary compressor, the rotary compressor packet It includes: casing, stator 62, rotor 61, cam mechanism 30, cylinder 10, base bearing 63, supplementary bearing 64, slide plate 40 and piston shoes 50.

Wherein, with reference to Fig. 1, casing may include body 71, upper housing 72, lower case 73, stator 62, rotor 61, cam Mechanism 30, cylinder 10, base bearing 63, supplementary bearing 64, slide plate 40 and piston shoes 50 may be mounted in casing.

Rotor 61 is connected with cam mechanism 30, rotates for driving cam means 30, base bearing 63, supplementary bearing 64 are set respectively Limit compression chamber between the upper and lower surfaces of cylinder 10, cylinder 10, base bearing 63 and supplementary bearing 64, cam mechanism 30 it is convex Wheel portion is rotatably provided in cylinder 10.

As shown in figure 9, piston 32 is set in crankshaft 31 in the embodiment that cam mechanism 30 includes crankshaft 31 and piston 32 Eccentric part outside, the cam part of cam mechanism 30 includes piston 32, and piston 32 is rotatably provided in cylinder 10, and piston 32 is in song It is rotatably fitted in compression chamber under the driving of axis 31.Certainly, cam mechanism 30 or integral type.

As shown in Figure 10, cylinder 10 is equipped with sliding vane groove 13, and slide plate 40 is installed on sliding vane groove 13, and sliding vane groove 13 can be along cylinder 10 radially extend, and slide plate 40 moves in the sliding vane groove 13.

As shown in Figure 10-Figure 12, piston shoes 50 include piston shoes head 51 and piston shoes end 54, piston shoes head 51 and piston shoes end 54 are connected, for example piston shoes head 51 can be integrally formed with piston shoes end 54, or are connected by connection types such as welding.

Piston shoes head 51, which is swung, is connected to the apex of slide plate 40, and the apex of piston shoes head 51 and slide plate 40 is around first axle string pendulum Dynamic connection, first axle is parallel with the axis of cylinder 10, and the apex of piston shoes head 51 and slide plate 40 forms sliding friction pair, piston shoes End 54 compresses the periphery of cam part, in the rotary compressor course of work, the outer circle of piston shoes end 54 and cam part It is slidably matched between face, forms sliding friction pair.

Piston shoes head 51 has hinged face 52, and the apex of slide plate 40 has open slot 41, and hinged face 52 is cut with scissors with open slot 41 It connects so that piston shoes head 51 and slide plate 40 swing and connect, piston shoes end 54 presses on the periphery of cam part.

It should be noted that the apex of slide plate 40 refers to that slide plate 40 extend into the cam part in compression chamber close to cam mechanism 30 One end of the periphery of (piston 32).Piston shoes head 51 and the apex of slide plate 40 offset, piston shoes end 54 and cam mechanism 30 The periphery of cam part (piston 32) offsets.Piston shoes end 54, which has, compresses face 55, compresses the periphery that face 55 compresses cam part.

In the rotary compressor course of work, slide plate 40 is reciprocating along sliding vane groove 13, and piston shoes 50 compress convex always The periphery of wheel portion (piston 32), piston shoes 50 are swung around first axle relative to slide plate 40, and piston shoes 50 are being parallel to 10 end of cylinder The direction in face is swung.

It is understood that by between slide plate 40 and cam part be arranged piston shoes 50, can substantially reduce slide plate 40 with Contact stress between cam part, lubricating status become hydrldynamic pressure lubrication from original boundary lubrication substantially, and friction power loss obtains Cooling capacity leakage to being effectively reduced, and between slide plate 40 and cam part also reduces.

As shown in Fig. 9-Figure 12, piston shoes 50 are θ, open slot 41 relative to the limit swing angle of the median plane of sliding vane groove 13 Opening angle be γ, the central angle in hinged face 52 is β, is met: 2 θ of γ-(360 ° of-β) >.θ is the full swing angle of piston shoes 50 Degree, hinged face 52 limit the size relation of above-mentioned angle less than 360 °, piston shoes 50 can be prevented during the swing, with cunning It is interfered between the open slot 41 of piece 40, causes component and 40 open slot 41 of slide plate stuck or even compressor work energy fails.

According to the rotary compressor of the utility model embodiment, 40 apex of slide plate and cam part outer circle are significantly improved The stress of face contact improves the lubricating status between slide plate 40 and cam part friction pair, greatly reduces 40 cam of slide plate Friction power loss between portion's friction pair, and can guarantee that piston shoes 50 are not interfered with sliding vane groove 13, the reliability of rotary compressor It is greatly improved, and the structure of the piston shoes 50 is simple, low in cost, effect is good.

In some embodiments, as shown in figure 12, piston shoes 50 further include be connected to piston shoes head 51 and piston shoes end 54 it Between piston shoes neck 56, the width of piston shoes neck 56 is less than the width of piston shoes head 51 and piston shoes end 54, and piston shoes neck 56 can Rotary motion occurs to prevent on-slip boots head 51 and slide plate 40.Piston shoes neck 56 and the subtended angle of the junction on piston shoes head 51 are 360°-β。

As shown in figure 11, open slot 41 is arc, and is met: 180 ° of γ <.The central angle in hinged face 52, which can be greater than, to be opened The central angle of mouth slot 41, falls off to prevent on-slip boots 50,

As shown in Figure 9 and Figure 10, a length of L of the swing arm of piston shoes 50, i.e. center of the center on piston shoes head 51 to the face that compresses 55 Distance be L, the diameter in hinged face 52 is d, and the width of slide plate 40 is T, is met: d≤L≤T.By designing piston shoes by the requirement It is stuck can be effectively prevented piston shoes 50 for 50 structure.

As shown in Figure 9 and Figure 10, a length of L of the swing arm of piston shoes 50, the internal diameter of cylinder 10 are D, and the limit of cam mechanism is eccentric Amount is e, is met: sin θ=e/ (0.5D+L-e).By designing the structure of piston shoes 50 by the requirement, piston shoes can be effectively prevented 50 is stuck.

Piston shoes end 54, which has, compresses face 55 for compress cam part, and compressing face 55 is one in arcwall face or plane Kind.

As shown in fig. 10 and fig. 12, compressing face 55 is arc-shaped surface, and compresses the periphery inscribe in face 55 Yu cam surface.This Sample, the contact between slide plate 40 and cam part become inscribe from original circumscribed contact and contact, and friction power loss is effectively reduced, And the cooling capacity leakage between slide plate 40 and piston 32 also reduces.

Embodiment three

It describes below with reference to Fig. 1-Figure 18 according to the utility model embodiment rotary compressor, the rotary compressor packet It includes: casing, stator 62, rotor 61, cam mechanism 30, cylinder 10, base bearing 63, supplementary bearing 64, slide plate 40 and piston shoes 50.

Wherein, with reference to Fig. 1, casing may include body 71, upper housing 72, lower case 73, stator 62, rotor 61, cam Mechanism 30, cylinder 10, base bearing 63, supplementary bearing 64, slide plate 40 and piston shoes 50 may be mounted in casing.

Rotor 61 is connected with cam mechanism 30, rotates for driving cam means 30, base bearing 63, supplementary bearing 64 are set respectively Limit compression chamber between the upper and lower surfaces of cylinder 10, cylinder 10, base bearing 63 and supplementary bearing 64, cam mechanism 30 it is convex Wheel portion is rotatably provided in cylinder 10.

As shown in figure 13, in the embodiment that cam mechanism 30 includes crankshaft 31 and piston 32, piston 32 is set in crankshaft Outside 31 eccentric part, the cam part of cam mechanism 30 includes piston 32, and piston 32 is rotatably provided in cylinder 10, and piston 32 exists It is rotatably fitted in compression chamber under the driving of crankshaft 31.Certainly, cam mechanism 30 or integral type.

As shown in figure 14, cylinder 10 is equipped with sliding vane groove 13, and slide plate 40 is installed on sliding vane groove 13, and sliding vane groove 13 can be along cylinder 10 radially extend, and slide plate 40 moves in the sliding vane groove 13.

As shown in Figure 14-Figure 18, piston shoes 50 include piston shoes head 51 and piston shoes end 54, piston shoes head 51 and piston shoes end 54 are connected, for example piston shoes head 51 can be integrally formed with piston shoes end 54, or are connected by connection types such as welding.

Piston shoes head 51, which is swung, is connected to the apex of slide plate 40, and the apex of piston shoes head 51 and slide plate 40 is around first axle string pendulum Dynamic connection, first axle is parallel with the axis of cylinder 10, and the apex of piston shoes head 51 and slide plate 40 forms sliding friction pair, piston shoes End 54 compresses the periphery of cam part, in the rotary compressor course of work, the outer circle of piston shoes end 54 and cam part It is slidably matched between face, forms sliding friction pair.

Piston shoes head 51 has hinged face 52, and the apex of slide plate 40 has open slot 41, and hinged face 52 is cut with scissors with open slot 41 It connects so that piston shoes head 51 and slide plate 40 swing and connect, piston shoes end 54 presses on the periphery of cam part.

It should be noted that the apex of slide plate 40 refers to that slide plate 40 extend into the cam part in compression chamber close to cam mechanism 30 One end of the periphery of (piston 32).Piston shoes head 51 and the apex of slide plate 40 offset, piston shoes end 54 and cam mechanism 30 The periphery of cam part (piston 32) offsets.Piston shoes end 54, which has, compresses face 55, compresses the periphery that face 55 compresses cam part.

In the rotary compressor course of work, slide plate 40 is reciprocating along sliding vane groove 13, and piston shoes 50 compress convex always The periphery of wheel portion (piston 32), piston shoes 50 are swung around first axle relative to slide plate 40, and piston shoes 50 are being parallel to 10 end of cylinder The direction in face is swung.

It is understood that by between slide plate 40 and cam part be arranged piston shoes 50, can substantially reduce slide plate 40 with Contact stress between cam part, lubricating status become hydrldynamic pressure lubrication from original boundary lubrication substantially, and friction power loss obtains Cooling capacity leakage to being effectively reduced, and between slide plate 40 and cam part also reduces.

As shown in Figure 14, Figure 16-Figure 18, hinged face 52 is equipped with notch 53, and as shown in figure 18, notch 53 is set as in piston shoes At least partly time in 50 swing process is connected to the external of open slot 41.

It, can be with by the way that notch 53 is arranged in the hinged face 52 of piston shoes 50 it is understood that compressor is during the work time Lubricating oil is brought by the swing of piston shoes 50 in the open slot 41 of the slide plate 40, is guaranteeing the slide plate 40 and piston shoes 50 Under the premise of reliability, the confession between the open slot 41 and piston shoes 50 of the slide plate 40 during swinging of piston shoes 50 is effectively solved Oil guarantees that its lubrication improves, reduces the friction power loss between slide plate 40 and piston shoes 50, greatly improve the performance of compressor.

According to the rotary compressor of the utility model embodiment, 40 apex of slide plate and cam part outer circle are significantly improved The stress of face contact improves the lubricating status between slide plate 40 and cam part friction pair, greatly reduces 40 cam of slide plate Friction power loss between portion's friction pair, and the high lubricating effect between piston shoes 50 and slide plate 40, the reliability of rotary compressor It is greatly improved, and the structure of the piston shoes 50 is simple, low in cost, effect is good.

In some embodiments, the opening angle of open slot 41 be γ, one end of close the piston shoes end 54 of notch 53 and The angle of the median plane of the line and piston shoes 50 at the center on piston shoes head 51 is ω 1, the one of the separate piston shoes end 54 of notch 53 End and the angle of the line at the center on piston shoes head 51 and the median plane of piston shoes 50 are ω 2, that is to say, that the starting of the notch 53 Angle is ω 1, and ending corner is ω 2, is met: 90 ° of 2 < of 90 ° of 0.5 γ < ω, 1 <, 60 °≤ω.In this way, the size of notch 53 and setting Seated position is able to satisfy the requirement of fuel feeding, and does not influence the movement of sliding friction pair.The two sides of notch 53 are equipped with hinged face 52, Can notch 53 is arranged also prevent piston shoes neck 56 to be broken in above-mentioned position.

As shown in Figure 16 and Figure 17, notch 53 is set to the non-bearing region in hinged face 52, it should be noted that piston shoes 50 It is clamped between cam part and slide plate 40, the bearing area in hinged face 52 is predominantly located at the top in hinged face 52, i.e., hinged face 52 Away from one end of piston shoes end 54.

At least unilateral setting of notch 53, notch 53 are set to the close compression chamber side (right side in Figure 14) on piston shoes head 51 Region, compression chamber side be high-pressure side, convenient for sucking high pressure oil lubrication.

Certainly, as shown in Figure 16 and Figure 17, notch 53 is symmetrically disposed on the two sides on piston shoes head 51.

As shown in figure 16, notch 53 can be planar shaped, and the processing is simple for the notch 53 of planar shaped.

As shown in figure 17, notch 53 can also be groove type, including but not limited to arc groove, rectangular recess etc..

The invention also discloses a kind of gas compression system, the gas compression system of the utility model includes above-mentioned A kind of rotary compressor of embodiment.According to the gas compression system of the utility model embodiment, rotary compressor Efficiency is high, not easy to wear.

The invention also discloses a kind of refrigeration system, the refrigeration system of the utility model includes any of the above-described kind of implementation The rotary compressor of example.According to the refrigeration system of the utility model embodiment, the efficiency of rotary compressor is high, is not easy to grind Damage.

The invention also discloses a kind of heat pump system, the heat pump system of the utility model includes any of the above-described kind of implementation The rotary compressor of example.According to the heat pump system of the utility model embodiment, the efficiency of rotary compressor is high, is not easy to grind Damage.

Claims (10)

1. a kind of rotary compressor characterized by comprising

Cylinder, the cylinder are equipped with sliding vane groove；

Slide plate, the slide plate are installed on the sliding vane groove；

Cam mechanism, the cam part of the cam mechanism are rotatably provided in the cylinder；

Piston shoes, the piston shoes include connected piston shoes head and piston shoes end, and the piston shoes head has hinged face, the slide plate Apex there is open slot, the hinged face and the open slot are hinged so that the piston shoes head and the slide plate swing and connect It connects, the piston shoes end presses on the periphery of the cam part, pole of the piston shoes relative to the median plane of the sliding vane groove Limit swing angle is θ, and the opening angle of the open slot is γ, and the central angle in the hinged face is β, is met: γ-(360 ° of-β) 2 θ of >.

2. rotary compressor according to claim 1, which is characterized in that the piston shoes further include being connected to the piston shoes The width of piston shoes neck between head and the piston shoes end, the piston shoes neck is less than the piston shoes head and the piston shoes The width of end.

3. rotary compressor according to claim 1, which is characterized in that the open slot is arc, and is met: γ < 180°。

4. rotary compressor according to claim 1, which is characterized in that the swing arm of the piston shoes a length of L, it is described hinged The diameter in face is d, and the width of the slide plate is T, is met: d≤L≤T.

5. rotary compressor according to claim 1, which is characterized in that a length of L of the swing arm of the piston shoes, the cylinder Internal diameter be D, the limit eccentricity of the cam mechanism is e, is met: sin θ=e/ (0.5D+L-e).

6. rotary compressor according to any one of claims 1-5, which is characterized in that the piston shoes end, which has, to be used In the face that compresses for compressing the cam part, the face that compresses is one of arcwall face or plane.

7. rotary compressor according to claim 6, which is characterized in that the face that compresses is arc-shaped surface, and described Compress the periphery inscribe in face Yu the cam surface.

8. a kind of gas compression system, which is characterized in that have such as rotary compression of any of claims 1-7 Machine.

9. a kind of refrigeration system, which is characterized in that have such as rotary compressor of any of claims 1-7.

10. a kind of heat pump system, which is characterized in that have such as rotary compressor of any of claims 1-7.