CN205779693U - The pump housing of compressor and there is its compressor - Google Patents

Abstract

The utility model discloses the pump housing of a kind of compressor and there is its compressor.The pump housing includes: cylinder, two bearings, bent axle, piston and slide plate, cylinder includes that body and extension, body and extension are separately machined profiled member；Two bearings are respectively provided at the both sides of cylinder, and at least one bearing is spinning part；Bent axle includes main shaft and the eccentric part being located on main shaft, and the top of eccentric part has upper thrust piece, and the bottom of eccentric part has lower thrust piece, main shaft and eccentric part and is steel pipe；Piston is hollow-core construction and piston is steel construction piece；Slide plate is steel construction piece.The pump housing according to this utility model embodiment, the cost of the pump housing can be reduced largely, reduce the machining expense of part, can suitably reduce the wall thickness of Pump Body Parts, alleviate the weight of the pump housing, and steel construction can improve pump housing rigidity, improve pump housing fit-up gap, be conducive to improving the performance of compressor.

Description

The pump housing of compressor and there is its compressor

Technical field

This utility model relates to compressor field, especially relates to the pump housing of a kind of compressor and has its compressor.

Background technology

The pump housing six parts of existing rotary compressor, use solid casting, and weight is big, relatively costly, more than roughing chip Amount is big waits deficiency；Secondly, the physical characteristic of foundry goods is in addition to wearability is good, and remaining index elastic modelling quantity, tensile strength are equal Relatively low, thus reduce the performance of the pump housing.

Utility model content

One of technical problem that this utility model is intended to solve in correlation technique the most to a certain extent.

To this end, the utility model proposes the pump housing of a kind of compressor, the cost of the pump housing, Ke Yishi can be reduced largely When the wall thickness of minimizing Pump Body Parts, alleviate the weight of the pump housing, and steel construction can improve pump housing rigidity, improve pump housing assembling Gap, is conducive to improving the performance of compressor.

This utility model also proposes a kind of compressor with the above-mentioned pump housing.

The pump housing of the compressor according to this utility model embodiment, including: cylinder, described cylinder includes body and extension, Limiting compression chamber in described body, described extension is located on the periphery wall of described body, and described cylinder is provided with cunning Film trap, the afterbody of inwall and described vane slot that the head of described vane slot runs through described body is positioned on described extension, Described body and described extension are separately machined profiled member；Two bearings, said two bearing is respectively provided at described cylinder Both sides, at least one described bearing is spinning part；Bent axle, described bent axle through described cylinder to support said two bearing, Described bent axle includes that main shaft and the eccentric part being located on described main shaft, the top of described eccentric part have a upper thrust piece, described partially The bottom in heart portion has lower thrust piece, described main shaft and described eccentric part and is steel pipe；Piston, described piston jacket is described On eccentric part and be positioned at described compression chamber, described piston is hollow-core construction and described piston is steel construction piece；Slide plate, described Slide plate is reciprocally located in described vane slot and the described tip of slide plate contacts with the periphery wall of described piston, described cunning Sheet is steel construction piece.

The pump housing of the compressor according to this utility model embodiment, by make cylinder include separately machined molding body and Extension, at least one bearing are that spinning part, the main shaft of bent axle and eccentric part are steel pipe, piston is hollow-core construction and piston It is steel construction piece for steel construction piece, slide plate, such that it is able to reduce the cost of the pump housing, the machining of reduction part largely Expense, can suitably reduce the wall thickness of Pump Body Parts, alleviates the weight of the pump housing, and steel construction can improve pump housing rigidity, Improve pump housing fit-up gap, be conducive to improving the performance of compressor.

In embodiments more of the present utility model, described body is round steel pipe, and described extension is the one of round steel pipe Section cutting member.

In embodiments more of the present utility model, the span of the thickness of described body and described extension is 5～15mm.

In embodiments more of the present utility model, described extension and described body are welded to connect.

In embodiments more of the present utility model, for making the span of the thickness of the steel plate of described spinning part it is 3～10mm.

In embodiments more of the present utility model, described upper thrust piece is formed as steel pipe and described upper thrust piece is weldingly fixed on On described main shaft and described eccentric part；Or described upper thrust piece and described eccentric part are formed in one part.

In embodiments more of the present utility model, the upper surface of described eccentric part is that horizontal plane and described upper thrust piece are with described First Transition inclined-plane it is provided with between the upper surface of eccentric part；Or the upper surface of described eccentric part is upper by described upper thrust piece The inclined-plane of the downward-sloping extension in surface.

In embodiments more of the present utility model, described lower thrust piece is formed as steel pipe and described lower thrust piece is weldingly fixed on On described main shaft and described eccentric part；Or described lower thrust piece and described eccentric part are formed in one part.

In embodiments more of the present utility model, the lower surface of described eccentric part is that horizontal plane and described lower thrust piece are with described The second intermediate incline it is provided with between the lower surface of eccentric part；Or the lower surface of described eccentric part is by under described lower thrust piece Surface be inclined upwardly extend inclined-plane.

In embodiments more of the present utility model, the internal perisporium of described eccentric part is provided with groove, a part for described main shaft It is contained in described groove.

In embodiments more of the present utility model, between edge, periphery and the described eccentric part of described upper thrust piece, limit first Oil circuit gap.

In embodiments more of the present utility model, between edge, periphery and the described eccentric part of described lower thrust piece, limit second Oil circuit gap.

In embodiments more of the present utility model, described piston includes: the first lengths of steel pipes；Second lengths of steel pipes, described second It is enclosed within outside lengths of steel pipes in described first lengths of steel pipes and between described first lengths of steel pipes and described second lengths of steel pipes, there is gap；Close Section, described closed section axial two ends with described first lengths of steel pipes and described second lengths of steel pipes respectively are connected to close described gap Form the cavity of described piston.

Further, described closed section is respectively welded and is fixed in described first lengths of steel pipes and described second lengths of steel pipes.

In embodiments more of the present utility model, being filled with gas in the cavity of described piston, the pressure of described gas is positioned at Between pressure at expulsion and the pressure of inspiration(Pi) of described compressor.

In embodiments more of the present utility model, the through hole of the cavity described piston being communicated with in described piston.

According to the compressor of this utility model embodiment, including the pump housing of the compressor according to this utility model above-described embodiment.

According to the compressor of this utility model embodiment, by arranging the pump housing according to this utility model above-described embodiment, thus The cost of the pump housing can be reduced largely, reduce the machining expense of part, can suitably reduce the wall thickness of Pump Body Parts, Alleviate the weight of the pump housing, and steel construction can improve pump housing rigidity, improves pump housing fit-up gap, is conducive to improving compressor Performance, the unbalance mass of compressor alleviates because the eccentric part Mass lost of bent axle and piston mass reduce simultaneously, balance Weight mass alleviates and highly diminishes, and the complete machine weight of compressor can alleviate.

Accompanying drawing explanation

Fig. 1 is the profile of the pump housing of the compressor according to this utility model embodiment；

Fig. 2 is the top view of the pump housing of the compressor according to this utility model embodiment；

Fig. 3 is the decomposing schematic representation of the pump housing of the compressor according to this utility model embodiment；

Fig. 4 is the top view of the piston according to this utility model embodiment；

Fig. 5 is the profile of the piston according to this utility model embodiment；

Fig. 6 is the decomposing schematic representation of the bent axle according to one embodiment of this utility model；

Fig. 7 is the profile of the bent axle shown in Fig. 6；

Fig. 8 is the schematic diagram of the bent axle according to another embodiment of this utility model；

Fig. 9 is the eccentric part in the bent axle shown in Fig. 8, upper thrust piece and the schematic diagram of lower thrust piece；

Figure 10 is the schematic diagram of the bent axle according to this utility model further embodiment；

Figure 11 is the eccentric part in the bent axle shown in Figure 10, upper thrust piece and the schematic diagram of lower thrust piece.

Reference:

The pump housing 100,

Bent axle 1, main shaft 11, first paragraph 111, second segment 112, eccentric part 12, upper surface 121, First Transition inclined-plane 122a, Second intermediate incline 122b, lower surface 123, groove 124, upper thrust piece 13, lower thrust piece 14, oilhole the 15, first oil The 16, second oil circuit gap 17, gap, road,

Base bearing 4, supplementary bearing 5,

Piston the 6, first lengths of steel pipes the 60, second lengths of steel pipes 61, closed section 62, cavity 63, through hole 64, upper chamfering 65, Lower chamfering 66,

Cylinder 7, body 70, extension 71, compression chamber 70a, vane slot 72,

Slide plate 8.

Detailed description of the invention

Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings.Below with reference to The embodiment that accompanying drawing describes is exemplary, it is intended to be used for explaining this utility model, and it is not intended that to of the present utility model Limit.

In description of the present utility model, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length ", " width Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " The orientation of the instruction such as " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", " circumferential " or position relationship For based on orientation shown in the drawings or position relationship, it is for only for ease of description this utility model and simplifies description rather than refer to Show or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not manage Solve as to restriction of the present utility model.

Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed Or implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, example Such as two, three etc., unless otherwise expressly limited specifically.

In this utility model, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " Gu Fixed " etc. term should be interpreted broadly, connect for example, it may be fixing, it is also possible to be to removably connect, or integral；Can Be mechanically connected, it is also possible to be electrical connection or each other can communication；Can be to be joined directly together, it is also possible to by between intermediary Connect connected, can be connection or the interaction relationship of two elements of two element internals, unless otherwise clear and definite restriction. For the ordinary skill in the art, concrete in this utility model of above-mentioned term can be understood as the case may be Implication.

The pump housing 100 of the compressor according to this utility model embodiment is described in detail below with reference to Fig. 1-Figure 11.May be appreciated Being that compressor includes that the element such as housing and motor, the pump housing 100 and motor are respectively provided in housing, motor includes stator and turns Son.

The pump housing 100 of the compressor according to this utility model embodiment, including: cylinder 7, two bearings, bent axle 1, pistons 6 and slide plate 8.Cylinder 7 includes body 70 and extension 71, limits compression chamber 70a, extension in body 70 On 71 periphery walls being located at body 70, cylinder 7 is provided with vane slot 72, and the head of vane slot 72 runs through body 70 Inwall and the afterbody of vane slot 72 be positioned on extension 71, body 70 and extension 71 are separately machined profiled member. It is to say, when processing cylinder 7, first machine-shaping body 70 and extension 71, then will extend over portion 71 and be fixed on On body 70.Thus by body 70 and extension 71 being provided separately, material can be made full use of, the most greatly Save manufacture material, it is to avoid waste of material, reduce cost.

Two bearings are respectively provided at the both sides of cylinder 7, and at least one bearing is spinning part.Specifically, two bearings are main Bearing 4 and supplementary bearing 5, base bearing 4 and supplementary bearing 5 are located at the both sides of cylinder 7, base bearing 4 and/or supplementary bearing 5 for rotation Casting die.Preferably, two bearings are spinning part.Specifically, the material making spinning part is steel plate.Still optionally further, It is 3～10mm for making the span of the thickness of the steel plate of spinning part.Specifically, the material of steel plate can be that plasticity becomes The medium carbon steel of type better performances or mild steel, such as 20#～45# carbon steel.Further, it is also possible to bearing is carried out surface Process the such as heat treatment quenching and tempering anti-wear performance with the diameter of axle endoporus of the intensity of rear bearing and bearing that improve molding.

Wherein it is understood that spinning part is made by spinning process.Spinning process is by rotational workpieces, makes workpiece Stress point is by putting line, then by line to face, gives certain pressure at certain direction hobboing cutter simultaneously and make metal material along this One Direction distortion and flowing and the technique that forms a certain shape.The major advantage of spinning process includes: 1) local continuous processing, Deformation force is little；2) rotary pressing processing precision is high, and dimensional tolerance reaches IT8, and roughness reaches 3.2, and the intensity of workpiece and hardness improve； 3) stock utilization is high, and die cost is low, 1/5th of only common punch die, is suitable for batch production, good economy performance.

Thus be spinning part by making at least one bearing, be conducive to reducing the weight of bearing blank (in certain embodiments, Advantageously reduce more than the 25% of blank weight), reduce the processing cost of bearing, thus advantageously reduce the price of bearing, and And the spinning part made by spinning process has high dimensional accuracy, high intensity, high rigidity, high rigidity and high springform Amount, thus be conducive to improving overall dimensional accuracy, intensity, hardness, rigidity and the elastic modelling quantity of bearing, and ensureing On the basis of bearing bulk strength and hardness, it is also possible to reduce the wall thickness of spinning part, to reduce the size of bearing.

Bent axle 1 is through cylinder 7 to support two bearings, and bent axle 1 includes main shaft 11 and the eccentric part 12 being located on main shaft 11, Main shaft 11 is fixed on rotor and rotates to be driven by rotor.The top of eccentric part 12 has upper thrust piece 13, eccentric part 12 Bottom there is lower thrust piece 14, main shaft 11 and eccentric part 12 be steel pipe.It is understood that lower thrust piece 14 To supporting piston 6 and the effect of eccentric part 12, upper thrust piece 13 plays the effect of the axial displacement limiting eccentric part 12.

Wherein owing to the offset of bent axle 1 is by the radial dimension decision of main shaft 11 and eccentric part 12, therefore by using not The main shaft 11 of same caliber and eccentric part 12 can obtain the bent axle 1 of different offset, meet the demand that offset is changeable. Alternatively, the thickness of steel pipe of main shaft 11 is set to 2～8mm, and the steel pipe thickness of eccentric part 12 is set to 2～8mm.Specifically, The material of main shaft 11 and eccentric part 12 can be the preferable medium carbon steel of welding performance or mild steel, such as 20#～45# carbon Steel, further, it is also possible to bent axle 1 is carried out surface and processes such as heat treatment quenching and tempering, nitridation etc. to improve the strong of bent axle 1 Degree and anti-wear performance.

Being enclosed within eccentric part 12 and be positioned at compression chamber 70a outside piston 6, piston 6 is hollow-core construction and piston 6 is steel construction Part.In slide plate 8 is reciprocally located at vane slot 72 and the tip of slide plate 8 contacts with the periphery wall of piston 6, slide plate 8 For steel construction piece.Specifically, the material of slide plate 8 can be high-speed steel or rustless steel, further, it is also possible to slide plate 8 Carry out surface and process such as carburizing, nitridation etc. to improve intensity and the anti-wear performance of slide plate 8.

The pump housing 100 of the compressor according to this utility model embodiment, by making cylinder 7 include the body of separately machined molding Portion 70 and extension 71, at least one bearing are that spinning part, the main shaft 11 of bent axle 1 and eccentric part 12 are steel pipe, work Plug 6 be hollow-core construction and piston 6 be steel construction piece, slide plate 8 be steel construction piece, such that it is able to reduce the pump housing largely The cost of 100, reduce the machining expense of part, can suitably reduce the wall thickness of the pump housing 100 part, alleviate the pump housing 100 Weight, and steel construction can improve the pump housing 100 rigidity, improves the pump housing 100 fit-up gap, is conducive to improving compressor Performance.

Cylinder 7, piston 6, the structure of bent axle 1 are described by 1-accompanying drawing 11 respectively below with reference to the accompanying drawings.

Cylinder 7:

In embodiments more of the present utility model, body 70 is round steel pipe, and extension 71 is a section of round steel pipe Cutting member.Specifically, in the manufacture process of cylinder 7, can be first the circular steel of preliminary dimension by a pipe thickness Pipe is radially cut into multistage, and wherein one section can be used as body 70；Then it is preliminary dimension by another pipe thickness Round steel pipe cuts into multiple segmental arc vertically, forms multiple extension 71；Then select one of them segmental arc, should The internal face of segmental arc is connected with the outside wall surface of body 70, obtains the semi-finished product of cylinder 7；Eventually pass certain operation (example Such as polish, surface process etc.), obtain the finished product of cylinder 7.

Such as, the outside dimension of the body 70 of cylinder 7 less than the outside dimension of extension 71 and is equal to the interior of extension 71 Footpath size, can be divided into five parts along the axially cutting of the round steel pipe for manufacturing extension 71 will extend over portion 71, The cross section of every part is all formed as arc section, and so this round steel pipe being used for manufacturing extension 71 can be as five cylinders 7 Extension 71, take full advantage of material.

Thus, body 70 and the extension 71 of this cylinder 7 all can be made by round steel pipe, the cylinder 7 made Structural strength big, possess high intensity, the advantage of high rigidity, owing to the elastic modelling quantity of steel is about 1.3 times of foundry goods, because of This, it is the most thinning that the cylinder 7 of steel can more preferably reduce the various stress deformations of the pump housing 100, beneficially cylinder 7, with Cylinder 7 foundry goods in correlation technique is compared, and the blank of this cylinder 7 is lightweight, wall thickness is thin, has advantageously reduced roughing work The cost of sequence.

This structure can also strengthen the intensity of vane slot 72 bottom outlet junction, improves the processing of vane slot 72, reduces the pump housing 100 During operating, cylinder 7 inwall and piston 6 impact bad with slide plate 8 and cylinder 7 groove gap.Furthermore, by cutting one section Round steel pipe can obtain multiple extension 71, both cost savings manufacture material, it is to avoid the waste of material, reduces cost, Manufacturing process can be reduced again, it is simple to the General design of cylinder 7.

Alternatively, the span of the thickness of body 70 and extension 71 is 5～15mm.Specifically, body 70 The preferable medium carbon steel of welding performance or mild steel, such as 20#～45# carbon steel can be with the material of extension 71.

According to an embodiment of the present utility model, the outside wall surface of body 70 is weldingly connected with the internal face of extension 71. Such as, the outside wall surface of body 70 is weldingly connected by argon arc welding, soldering or Laser Welding with the internal face of extension 71. Certainly, the body 70 of this utility model embodiment is not limited to this, outside body 70 with the welding method of extension 71 Wall can also realize being connected by other welding manners with the internal face of extension 71.Thus, it is possible to realize body 70 Fixing with extension 71 is connected, it is ensured that the structural strength of this cylinder 7, connection reliability, and the use improving this cylinder 7 can By property.Furthermore, body 70 and extension 71 are in welding process, convenient and simple for operation, due to the weldability of steel part Can be good, the body 70 being therefore made up of Steel material is connected reliably with extension 71.

Wherein, the inwall of body 70 is provided with vane slot 72, and the internal face of vane slot 72 is provided with local tufftride layer, phosphatization Layer, molybdenum layer or nickel plating coating.In other words, after body 70 is connected with extension 71, first pass around finishing step, Then cylinder 7 can carry out corresponding Wear-resistant Treatment, surface processes, thus meets the high-precision requirement of cylinder 7.

For example, it is possible to the internal face of the vane slot 72 of cylinder 7 is carried out the conventional surface process reducing abrasion such as phosphatization, molybdenum, The surface quality making this cylinder 7 is improved, thus is conducive to improving the reliability of this cylinder 7.Therefore, this cylinder 7 The intensity of vane slot 72 bottom outlet junction can be strengthened, improve the processing of vane slot 72, reduce the pump housing 100 when operating, gas The inwall of cylinder 7 and the roller impact bad with slide plate 8 and cylinder 7 groove gap.

In other detailed description of the invention of the present utility model, extension 71 is connected with body 70 screw.It is to say, In the manufacture process of cylinder 7, can first the round steel pipe that pipe thickness is preliminary dimension radially be cut, To body 70；Then the round steel pipe that another pipe thickness is preliminary dimension is cut into multiple segmental arc, shape vertically Become multiple extension 71；Then select one of them segmental arc, this segmental arc is realized by screw fixing with body 70 Connect, obtain the semi-finished product of cylinder 7；Eventually pass certain operation, obtain the finished product of cylinder 7.

Preferably, extension 71 can be connected by junction of the edges of two sheets of paper screw with body 70, and this connected mode can be avoided affecting gas Cylinder 7 and the assembling of other parts.The cylinder 7 prepared by said method, simple in construction, bonding strength is high, is convenient to mount and dismount, The body 70 of cylinder 7 and extension 71 are after damage, and it is convenient to change, and can avoid waste of material.

Bent axle 1:

Bent axle 1 includes main shaft 11, eccentric part 12, upper thrust piece 13 and lower thrust piece 14, it is to be understood that main shaft 11, Fixed form between eccentric part 12, upper thrust piece 13 and lower thrust piece 14 can be varied, as long as meeting bent axle 1 Requirement of strength.

As shown in Figure 6 and Figure 7, in embodiments more of the present utility model, upper thrust piece 13 is formed as steel pipe and upper thrust Part 13 is weldingly fixed on main shaft 11 and eccentric part 12.It is to say, upper thrust piece 13 is also made up of steel pipe, so that Obtain the simple in construction of bent axle 10.Preferably, can use soldering even between upper thrust piece 13 and main shaft 11 and eccentric part 12 Connect, upper thrust piece 13 can be carried out the conventional surface reducing abrasion such as corresponding Wear-resistant Treatment, such as molybdenum phosphatization etc. and process. The part of course, it should be understood that upper thrust piece 13 and eccentric part 12 can also be formed in one.

In embodiments more of the present utility model, as shown in Figure 6 and Figure 7, lower thrust piece 14 is formed as steel pipe and lower thrust Part 14 is weldingly fixed on main shaft 11 and eccentric part 12.It is to say, lower thrust piece 14 is made up of steel pipe, so that The simple in construction of bent axle 10.Preferably, lower thrust piece 14 is connected with using soldering between main shaft 11 and eccentric part 12, Lower thrust piece 14 can carry out the conventional surface reducing abrasion such as corresponding Wear-resistant Treatment, such as molybdenum phosphatization etc. process.Certainly The part it is understood that lower thrust piece 14 and eccentric part 12 can also be formed in one.

In specific embodiments more of the present utility model, a part of internal perisporium of eccentric part 12 is welded on the periphery of main shaft 11 On wall.Further, as shown in figs, the periphery wall of main shaft 11 is provided with recessed channel, a part for eccentric part 12 It is welded in recessed channel, say, that main shaft 11 includes first paragraph 111 and second segment 112, and the external diameter of second segment 112 is little In the external diameter of first paragraph 111, eccentric part 12 is welded on the periphery wall of second segment 112, such that it is able to increase bonding area, Improve the weld strength between two steel pipes.Preferably, connect for soldering between main shaft 11 and eccentric part 12.It is of course possible to reason Solve, the solder technology such as laser welding between main shaft 11 and eccentric part 12, can also be used.

Needing here to illustrate, the lower part of the second segment 112 of main shaft 11 is that the supplementary bearing 5 with compressor 100 coordinates , it is less that the external diameter of second segment 112 is arranged, it is also possible to reduces the contact area of bent axle 1 and supplementary bearing 5, such that it is able to Reduce abrasion.Certainly, main shaft 11 can also be external diameter consistent (as shown in Figure 6 and Figure 7).

Further, with reference to Fig. 8 and Fig. 9, upper thrust piece 13 offsets with the bottom of first paragraph 111.Thus it is easy to bias Portion 12 is attached fixing with main shaft 11, and increases the contact area of eccentric part 12 and main shaft 11, such that it is able to improve The structural strength of bent axle 1 and stability.

With reference to Fig. 9 and Figure 11, in embodiments more of the present utility model, the internal perisporium of eccentric part 12 is formed with groove 124, a part for main shaft 11 is contained in groove 124.For example, it may be the part appearance of the second segment 112 of main shaft 11 It is contained in groove 124.Thus, it is possible to increase the contact area of main shaft 11 and eccentric part 12, such that it is able to improve bent axle 1 Structural strength.Such as, when main shaft 11 and eccentric part 12 are welded to connect, the weldering of main shaft 11 and eccentric part 12 can be increased Junction is amassed, such that it is able to improve weld strength.Alternatively, the shape of the periphery wall of main shaft 11 and the adhered shape of groove 124, Thus can improve the structural stability of bent axle 1 further.

It addition, by the radial depth changing eccentric part 12 upper groove 124, thus it is possible to vary the offset of bent axle 1, thus exist In the case of eccentric part 12 is selected with the caliber of main shaft 11, can be by the groove 124 of the different radial depth of processing to be formed The bent axle 1 of different offsets, such that it is able to meet the demand that offset is changeable further.

Alternatively, (in such as stove, copper brazing connects) or Laser Welding can be connected between main shaft 11 with eccentric part 12 by soldering Connect.Thus, welding deformation can be reduced by above-mentioned welding manner, improve the welding quality of bent axle 1.

It addition, with reference to Fig. 8-Figure 11, main shaft 11 and eccentric part 12 can also be respectively equipped with oilhole 15.It is understood that When being fixed on main shaft 11 by eccentric part 12, on main shaft 11 and eccentric part 12, the oilhole 15 of correspondence position simultaneously can also Use as fabrication hole.Specifically, when being weldingly fixed on main shaft 11 by eccentric part 12, pin etc. can be first passed through Securing member sequentially passes through the oilhole 15 on eccentric part 12 and main shaft 11, such that it is able to positioned by eccentric part 12, enters the most again Row welding so that eccentric part 12 and main shaft 11 weld position more convenient.Weld with main shaft 11 at eccentric part 12 After completing, above-mentioned pin can be taken off.

With reference to Fig. 8 and Fig. 9, in embodiments more of the present utility model, the upper surface 121 of eccentric part 12 be horizontal plane and First Transition inclined-plane 122a it is provided with, such as it is shown in figure 9, be somebody's turn to do between upper thrust piece 13 and the upper surface 121 of eccentric part 12 First Transition inclined-plane 122a is from the edge of upper thrust piece 13 downwards and be tilted to the right and extend to the upper surface 121 of eccentric part 12. Thus, i.e. can reduce the weight of the eccentric part 12 of bent axle 1, such that it is able to reduce compressor 100 eccentric mass produce from Heart inertia force, improves the reliability of compressor 100, and material saving, reduction cost.Need here to illustrate, this " upper surface 121 of eccentric part 12 " of Duan Suoshu refers to that the top of eccentric part 12 removes upper thrust piece 13 and First Transition is oblique The part of face 122a.

Alternatively, the upper thrust piece 13 of the upper end being formed at eccentric part 12 can be upper thrust piece 13 by with eccentric part 12 It is integrally machined and forms, it is also possible to be to be formed by machining eccentric part 12.

Alternatively, the structure of lower thrust piece 14 and upper thrust piece 13 can be identical, and the structure that thus can make bent axle 1 is well-balanced.

Such as, similarly, the lower surface 123 of eccentric part 12 is the lower surface of horizontal plane and lower thrust piece 14 and eccentric part 12 Also being provided with the second intermediate incline 122b between 123, the most as shown in Figure 8, this second intermediate incline 122b is from lower thrust piece The edge of 14 upwards and is tilted to the right and extends to the lower surface 123 of eccentric part 12.Thus, it is possible to reduce eccentric part further The weight of 12, i.e. can reduce the weight of the eccentric part 12 of bent axle 1, improves the reliability of compressor 100, and economizes on Material, reduction cost.Needing here to illustrate, " lower surface 123 of eccentric part 12 " described in this paragraph refers to eccentric part The bottom of 12 removes lower thrust piece 14 and the part of the second intermediate incline 122b.

Alternatively, the lower thrust piece 14 of the lower end being formed at eccentric part 12 can be lower thrust piece 14 by with eccentric part 12 It is integrally machined and forms, it is also possible to be to be formed by machining eccentric part 12.

With reference to Figure 10 and Figure 11, in other embodiments of the present utility model, the upper surface 121 of eccentric part 12 is by upper The inclined-plane of the downward-sloping extension of upper surface of thrust piece 13, the most as shown in Figure 10 and Figure 11, this inclined-plane is from upper thrust piece The edge of 13 downwards and is tilted to the right and extends to the outer edge of eccentric part 12.Thus, it is possible to reduce eccentric part 12 further Weight, such that it is able to reduce the centrifugal intertia force that compressor 100 eccentric mass produces, improves the reliability of compressor 100, And material saving, reduction cost.Needing here to illustrate, " upper surface 121 of eccentric part 12 " described in this paragraph is Refer to that the top of eccentric part 12 removes the part of upper thrust piece 13.

In embodiments more of the present utility model, as shown in Figure 10, the lower surface 123 of eccentric part 12 can be to be stopped by lower The lower surface of push piece 14 be inclined upwardly extend inclined-plane.Need here to illustrate, described in this paragraph " eccentric part 12 Lower surface 123 " refer to that the bottom of eccentric part 12 removes the part of lower thrust piece 14.

In embodiments more of the present utility model, as it is shown in fig. 7, between the edge, periphery of upper thrust piece 13 and eccentric part 12 Limit the first oil circuit gap 16.Thus the lubricating oil in housing can enter into main shaft 11 He by the first oil circuit gap 16 Between eccentric part 12, then lubricate the pump housing 100 by the oilhole 15 of bent axle 1, extend the service life of the pump housing 100.

In embodiments more of the present utility model, as it is shown in fig. 7, between edge, periphery and the eccentric part 12 of lower thrust piece 14 Limit the second oil circuit gap 17.Thus the lubricating oil in housing can enter into main shaft 11 He by the second oil circuit gap 17 Between eccentric part 12, then lubricate the pump housing 100 by the oilhole 15 of bent axle 10, extend the service life of the pump housing 100.

Piston 6:

As it is shown in figure 5, in embodiments more of the present utility model, piston 6 includes: first lengths of steel pipes the 60, second steel pipe Section 61 and closed section 62.It is enclosed within outside second lengths of steel pipes 61 in first lengths of steel pipes 60 and the first lengths of steel pipes 60 and the second lengths of steel pipes There is between 61 gap.Closed section 62 axial two ends with the first lengths of steel pipes 60 and the second lengths of steel pipes 61 respectively are connected with envelope Close gap and form the cavity 63 of piston 6.

It is to say, piston 6 is mainly made up of first lengths of steel pipes the 60, second lengths of steel pipes 61 and closed section 62, wherein first Lengths of steel pipes 60 and the second lengths of steel pipes 61 are all formed as vertically the pipe that (above-below direction as shown in Figure 5) extends, And the second lengths of steel pipes 61 is set in the outside of the first lengths of steel pipes 60 and is coaxially disposed with the first lengths of steel pipes 60, the first lengths of steel pipes The lateral wall of 60 is arranged spaced apart with the medial wall of the second lengths of steel pipes 61, and closed section 62 includes two, two closed sections 62 It is respectively provided at the top and bottom of the first lengths of steel pipes 60, and the inner of closed section 62 above and the first lengths of steel pipes 60 Upper end be connected, the outer end of this closed section 62 is connected with the upper end of the second lengths of steel pipes 61, and closed section 62 below being positioned at The inner is connected with the lower end of the first lengths of steel pipes 60, and the outer end of this closed section 62 is connected with the lower end of the second lengths of steel pipes 61, thus Make to limit between closed section the 62, first lengths of steel pipes 60 and the second lengths of steel pipes 61 cavity 63 of piston 6.

Thus, the simple in construction of the piston 6 of this compressor, each parts connect compact, be simple to manufacture, both can reduce this work The quality of plug 6, this piston 6, with within the compressor, can reduce the weight of balance weight, thus reduce cost, can drop again The power consumption of low compression machine, improves the efficiency of compressor.

Specifically, the wall thickness of the first lengths of steel pipes 60 and the second lengths of steel pipes 61 could be arranged to 0.5～2.5mm, and material can be weldering Meet medium carbon steel or the mild steel of better performances, such as 20#～45# carbon steel, bearing steel 20Cr etc..It is possible to further to One lengths of steel pipes 60 and the second lengths of steel pipes 61 carry out including that the process of surface treatment such as heat treatment quenching and tempering, carburizing, nitridation are lived to improve The intensity of plug 6 and anti-wear performance.

Preferably, two closed sections 62 are respectively formed as annular, the inner ring of each closed section 62 respectively with the first lengths of steel pipes 60 One end be connected, the outer ring of each closed section 62 is connected with corresponding one end of the second lengths of steel pipes 61 respectively.

Specifically, two closed sections 62 are formed as the annular element arranged in the horizontal direction, and closed section 62 above Inner ring and the upper end of the first lengths of steel pipes 60 be connected, the upper end of the outer ring of closed section 62 above and the second lengths of steel pipes 61 It is connected, and the lower end of the inner ring and the first lengths of steel pipes 60 being positioned at the closed section 62 of lower section is connected, be positioned at the closed section 62 of lower section Outer ring be connected with the lower end of the second lengths of steel pipes 61 so that annular closed section 62 close the first lengths of steel pipes 60 and the second steel pipe The top and bottom in the gap between section 61.

As it is shown in figure 5, in detailed description of the invention more of the present utility model, closed section 62 and the second lengths of steel pipes 61 one Being formed, closed section 62 is weldingly connected with the first lengths of steel pipes 60.I.e. two closed sections 62 are respectively along the footpath of the second lengths of steel pipes 61 To extending internally, and the inner ring of two closed sections 62 top and bottom with the first lengths of steel pipes 60 respectively are weldingly connected.Thus, Integral part of structure is possible not only to ensure the properity stability of piston 6, and facilitates molding, is simple to manufacture, and And eliminate unnecessary assembly parts and connect operation, substantially increase the efficiency of assembling of piston 6, it is ensured that the connection of piston 6 Reliability, furthermore, bulk strength and the stability of integral part of structure are higher, assemble more convenient, and the life-span is longer.

In other detailed description of the invention of the present utility model, closed section 62 can be respectively welded and be fixed on the first lengths of steel pipes 60 With in the second lengths of steel pipes 61.

As it is shown in figure 5, the inner circle of piston 6 has upper chamfering 65 and lower chamfering 66, further, the connection of synthesis piston 6 Seam is positioned at upper chamfering 65 or the lower chamfering 66 of the inner circle of piston 6.Thus do not affect piston 6 polish and piston 6 Assembling.

In embodiments more of the present utility model, being filled with gas in the cavity 63 of piston 6, the pressure of gas is positioned at compression Between pressure at expulsion and the pressure of inspiration(Pi) of machine.It is understood that the span of the pressure of inspiration(Pi) of compressor and pressure at expulsion Span determine that, therefore can select the pressure of suitable gas so that it is between pressure of inspiration(Pi) and pressure at expulsion Between.Preferably, the stability of gas is high, the stabilizing gas (such as coolant) that such as the perfusion coefficient of heat transfer is poorer than metal.When So it is understood that can also be normal pressure in the cavity 63 of piston 6.

As shown in Figure 4, in embodiments more of the present utility model, the cavity 63 piston 6 being communicated with in piston 6 Through hole 64.Thus by arranging through hole 64 so that the cavity 63 of piston 6 is connected with compressor internal high pressure, Ke Yishi When the resistance to pressure request reducing piston 6.As shown in Figure 4, in preferred embodiments more of the present utility model, synthesize piston 6 Connecting sewing at the through hole 64 of cavity 63 that is communicated with in piston 6, consequently facilitating the machine-shaping of piston 6.

According to the compressor of this utility model embodiment, including the pump housing of the compressor according to this utility model above-described embodiment 100。

According to the compressor of this utility model embodiment, by arranging the pump housing 100 according to this utility model above-described embodiment, from And the cost of the pump housing 100 can be reduced largely, reduce the machining expense of part, can suitably reduce the pump housing 100 The wall thickness of part, alleviates the weight of the pump housing 100, and steel construction can improve the pump housing 100 rigidity, improves the pump housing 100 and fills Joining gap, be conducive to improving the performance of compressor, the unbalance mass of compressor subtracts because of eccentric part 12 mass of bent axle 1 simultaneously Less and piston 6 Mass lost and alleviate, counterweight quality alleviates and highly diminishes, and the complete machine weight of compressor can alleviate.

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

In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or Feature is contained at least one embodiment of the present utility model or example.In this manual, schematic to above-mentioned term Statement is necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature Can be so that one or more embodiments in office or example to combine in an appropriate manner.Additionally, in the case of the most conflicting, Those skilled in the art can be by the different embodiments described in this specification or example and different embodiment or the spy of example Levy and be combined and combine.

Although above it has been shown and described that embodiment of the present utility model, it is to be understood that above-described embodiment is example Property, it is impossible to being interpreted as restriction of the present utility model, those of ordinary skill in the art can in the range of this utility model Above-described embodiment be changed, revise, to replace and modification.

Claims (17)

1. the pump housing of a compressor, it is characterised in that including:

Cylinder, described cylinder includes body and extension, limits compression chamber in described body, and described extension is located at On the periphery wall of described body, described cylinder is provided with vane slot, and the head of described vane slot runs through the interior of described body The afterbody of wall and described vane slot is positioned on described extension, and described body and described extension are separately machined profiled member；

Two bearings, said two bearing is respectively provided at the both sides of described cylinder, and at least one described bearing is spinning part；

Bent axle, described bent axle is through described cylinder to support said two bearing, and described bent axle includes main shaft and is located at described master Eccentric part on axle, the top of described eccentric part has upper thrust piece, and the bottom of described eccentric part has lower thrust piece, described Main shaft and described eccentric part are steel pipe；

Piston, described piston jacket is on described eccentric part and is positioned at described compression chamber, and described piston is hollow-core construction and institute Stating piston is steel construction piece；

Slide plate, described slide plate is reciprocally located in described vane slot and the periphery of tip and described piston of described slide plate Wall contacts, and described slide plate is steel construction piece.

The pump housing of compressor the most according to claim 1, it is characterised in that described body is round steel pipe, described Extension is one section of cutting member of round steel pipe.

The pump housing of compressor the most according to claim 2, it is characterised in that described body and the thickness of described extension The span of degree is 5～15mm.

The pump housing of compressor the most according to claim 2, it is characterised in that described extension and the welding of described body Connect.

The pump housing of compressor the most according to claim 1, it is characterised in that for making the steel plate of described spinning part The span of thickness is 3～10mm.

The pump housing of compressor the most according to claim 1, it is characterised in that described upper thrust piece is formed as steel pipe and institute State thrust piece to be weldingly fixed on described main shaft and described eccentric part；Or

Described upper thrust piece and described eccentric part are formed in one part.

The pump housing of compressor the most according to claim 1, it is characterised in that the upper surface of described eccentric part is horizontal plane And it is provided with First Transition inclined-plane between described upper thrust piece and the upper surface of described eccentric part；Or

The upper surface of described eccentric part is by the inclined-plane of the downward-sloping extension of upper surface of described upper thrust piece.

The pump housing of compressor the most according to claim 1, it is characterised in that described lower thrust piece is formed as steel pipe and institute State lower thrust piece to be weldingly fixed on described main shaft and described eccentric part；Or

Described lower thrust piece and described eccentric part are formed in one part.

The pump housing of compressor the most according to claim 1, it is characterised in that the lower surface of described eccentric part is horizontal plane And it is provided with the second intermediate incline between described lower thrust piece and the lower surface of described eccentric part；Or

The lower surface of described eccentric part be by the lower surface of described lower thrust piece be inclined upwardly extend inclined-plane.

The pump housing of compressor the most according to claim 1, it is characterised in that the internal perisporium of described eccentric part is provided with Groove, a part for described main shaft is contained in described groove.

The pump housing of 11. compressors according to claim 1, it is characterised in that edge, periphery and the institute of described upper thrust piece State and between eccentric part, limit the first oil circuit gap.

12. according to the pump housing of the compressor according to any one of claim 1-11, it is characterised in that described lower thrust piece The second oil circuit gap is limited between edge, periphery and described eccentric part.

The pump housing of 13. compressors according to claim 1, it is characterised in that described piston includes:

First lengths of steel pipes；

Second lengths of steel pipes, is enclosed within outside described second lengths of steel pipes in described first lengths of steel pipes and described first lengths of steel pipes and described second There is between lengths of steel pipes gap；

Closed section, described closed section axial two ends with described first lengths of steel pipes and described second lengths of steel pipes respectively are connected to close Described gap forms the cavity of described piston.

The pump housing of 14. compressors according to claim 13, it is characterised in that described closed section is respectively welded and is fixed on In described first lengths of steel pipes and described second lengths of steel pipes.

The pump housing of 15. compressors according to claim 1, it is characterised in that be filled with gas in the cavity of described piston Body, the pressure of described gas is between the pressure at expulsion and pressure of inspiration(Pi) of described compressor.

The pump housing of 16. compressors according to claim 1, it is characterised in that be communicated with described work on described piston The through hole of the cavity in plug.

17. 1 kinds of compressors, it is characterised in that include the pump housing according to the compressor according to any one of claim 1-16.