CN206035759U - Bent axle and compressor of compressor - Google Patents

Abstract

The utility model discloses a bent axle and compressor of compressor, the bent axle of compressor includes: first section and second section, the central line of first section be central line a, is equipped with eccentric portion in the first section, and the central line of off -centre is central line b, and the lower extreme of second section and first section upper end are connected, and the central line of second section is central line c, and central line a, central line b and central line c are located the coplanar, and central line b and central line c are located central line a both sides. According to the utility model discloses a bent axle of compressor, through setting up the bent axle into first section and second section, the central line c of messenger's second section and the central line b of off -centre portion are located the central line a's of first section both sides, can be so that the central line of first section and second section has a skew volume in advance, at the compressor during operation, the volume that should deviate in advance can effectively reduce the eccentric magnetism pulling force that moves at bent axle upper end motor position, thereby the effectual problem of improving the wearing and tearing of bent axle upper end, and then the whole life of bent axle has been improved.

Description

The bent axle and compressor of compressor

Technical field

This utility model is related to household electrical appliance technical field, specifically, more particularly to a kind of bent axle of compressor and pressure Contracting machine

Background technology

With rotary compressor small axle diameter trend and parts reduces cost demand, pump housing rigid body has weaker trend, in It is that crankshaft wear abnormal problem gradually can be highlighted, wherein main shaft upper end abrasion is one of importance.

In correlation technique, bent axle is spacing by metal (upper, and bent axle is subject to gas force, balance weight rotating inertia force, radial direction Unbalanced magnetic pull is acted on, and wherein Unbalanced-magnetic-pull includes quiet eccentric magnetic pull and dynamic bias magnetic pull effect.Through Simulation analysis and experimental verification, gas force are the main mechanical factors for causing bent axle root inordinate wear, and dynamic bias magnetic pull It is the main mechanical factor for causing the inordinate wear of bent axle upper end.

The generation of dynamic bias magnetic pull is mainly relevant with the rotating inertia force for postponing generation with balance weight.Compressor operation mistake Cheng Zhong, as rotating inertia force is acted on, crankshaft end can occur flexure so as to deviate center of rotation, and the rotor for assembling therewith also can Dynamic is produced with stator center simultaneously to deviate, thus dynamic bias magnetic pull produces.

Utility model content

This utility model is intended at least to solve to a certain extent one of technical problem in correlation technique.For this purpose, this reality With a kind of bent axle of compressor of new proposition, the bent axle of the compressor has the advantages that slow-roll stabilization, weares and teares little.

This utility model also proposes a kind of compressor, and the compressor has compressor crank shaft described above.

According to the compressor crank shaft of this utility model embodiment, the bent axle has The hole and bent axle includes：First paragraph, line a centered on the centrage of the first paragraph, the first paragraph are provided with eccentric part, institute State line b centered on the centrage of eccentric part；Second segment, the lower end of the second segment are connected with the upper end of the first paragraph, described In line c centered on the centrage of second segment, the centrage a, the centrage b and the centrage c are generally aligned in the same plane, and The centrage b and centrage c is located at the centrage a both sides.

According to the compressor crank shaft of this utility model embodiment, by bent axle is set to first paragraph and second segment, is made The centrage b of the centrage c and eccentric part of two-stage nitration is located at the both sides of the centrage a of first paragraph, can cause first paragraph and second The centrage of section has a pre- bias, and in compressor operating, the pre- bias can effectively reduce bent axle upper end motor The dynamic eccentric magnetic pull at position, the problem abnormal so as to effectively improve the abrasion of bent axle upper end, and then it is bent to improve compressor The whole service life of axle.

According to one embodiment of the present utility model, the distance between the centrage a and the centrage c are e, described E meets：0 ＜ e≤0.45mm.

According to one embodiment of the present utility model, the distance between the centrage a and the centrage c are e, described E=0.2mm.

According to one embodiment of the present utility model, the second segment includes the first side wall and second sidewall, described first Side wall is connected with the second sidewall, the first side wall and the eccentric part positioned at the same side of the centrage a, described the , positioned at the both sides of the centrage a, the wall thickness of the first side wall is less than the wall of the first paragraph for two side walls and the eccentric part Wall thickness of the wall thickness of the thick and second sidewall more than or equal to the first paragraph.

According to one embodiment of the present utility model, the second segment includes the first side wall and second sidewall, described first Side wall is connected with the second sidewall, the first side wall and the eccentric part positioned at the same side of the centrage a, described the , positioned at the both sides of the centrage a, the wall thickness of the first side wall is equal to the wall of the first paragraph for two side walls and the eccentric part Wall thickness of the wall thickness of the thick and second sidewall more than the first paragraph.

According to one embodiment of the present utility model, the bent axle is formed in one part.

According to one embodiment of the present utility model, the first paragraph is detachably connected with the second segment.

According to one embodiment of the present utility model, the first paragraph is welded with the second segment.

According to the compressor of this utility model embodiment, including：Housing；Electric machine assembly, the electric machine assembly are located at described In housing and including stator and rotor, the stator is fixed on the housing；And bent axle, the bent axle is song described above Axle, the rotor are set on the second segment of the bent axle, the internal perisporium of the periphery wall of the rotor and the stator it Between ultimate range for L1, the periphery wall of the rotor and the stator internal perisporium between minimum range be L2, the L1 Meet with the L2：0 ＜ L1-L2≤0.9mm.

According to the compressor of this utility model embodiment, by between the periphery wall and the internal perisporium of stator of setting rotor Ultimate range L1 and most under apart from L2 meet：0 ＜ L1-L2≤0.9mm, can cause the center of rotor and the center of stator to exist Pre- bias, such that it is able to effectively reduce reducing the dynamic eccentric magnetic pull at bent axle upper end motor position, so as to effectively improve The abnormal problem of bent axle upper end abrasion, and then improve the whole service life of compressor crank shaft.

According to one embodiment of the present utility model, the L1 and L2 also meets：L1-L2=2e, wherein, it is described in The distance between heart line a and the centrage c are e.

Description of the drawings

The advantage of of the present utility model above-mentioned and/or additional aspect will become from the description with reference to accompanying drawings below to embodiment Substantially with it is easy to understand.

Fig. 1 is the structural representation of the bent axle of the compressor according to this utility model embodiment；

Fig. 2 is the structural scheme of mechanism of the compressor crank shaft according to this utility model embodiment；

Fig. 3 is the close-up schematic view of part A in Fig. 2；

Fig. 4 is the structural representation of the compressor crank shaft according to this utility model embodiment；

Fig. 5 is the structural representation of the compressor crank shaft according to this utility model embodiment.

Reference：

The bent axle 100 of compressor,

Center oilhole 10,

First paragraph 20, eccentric part 210, upper bearing (metal) 230, lower bearing 240,

Second segment 30, the first side wall 310, second sidewall 320,

Electric machine assembly 220, stator 221, rotor 222.

Specific embodiment

Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings.Below by The embodiment being described with reference to the drawings is exemplary, it is intended to for explaining this utility model, and it is not intended that new to this practicality The restriction of type.

In description of the present utility model, it is to be understood that term " length ", " thickness ", " on ", D score, " front ", " afterwards ", the orientation of the instruction such as "left", "right", " interior ", " outward ", " radial direction " or position relationship are based on orientation shown in the drawings or position Relation is put, description this utility model is for only for ease of and is simplified description, rather than indicate or imply the device or element of indication Must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.

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

In this utility model, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " Gu It is fixed " etc. term should be interpreted broadly, it is for example, it may be fixedly connected, or be detachably connected or integral；Can be It is mechanically connected, or electrically connects or can communicate each other；Can be joined directly together, it is also possible to by the indirect phase of intermediary Even, can be connection or the interaction relationship of two elements of two element internals, unless otherwise clearly restriction.For this For the those of ordinary skill in field, concrete meaning of the above-mentioned term in this utility model can be understood as the case may be.

The bent axle 100 of the compressor according to this utility model embodiment, the song of the compressor are described below with reference to Fig. 1-Fig. 5 Axle 100 can be used for rotary compressor.

As Figure 1-Figure 5, the bent axle 100 according to the compressor of this utility model embodiment, bent axle 100 is with along length Its center oilhole 10 is run through in direction, and bent axle 100 includes：First paragraph 20 and second segment 30.

Specifically, line a centered on the centrage of first paragraph 20, first paragraph 20 are provided with eccentric part 210, eccentric part 210 Centrage centered on line b, the lower end of second segment 30 is connected with the upper end of first paragraph 20, line centered on the centrage of second segment 30 In c, centrage a, centrage b and centrage c are generally aligned in the same plane, and centrage b and centrage c is located at centrage a both sides.

It should be noted that in compressor operating, bent axle can be by gas force, balance weight rotating inertia force, and radial direction is not Balance magnetic pull effect, wherein Unbalanced-magnetic-pull include quiet eccentric magnetic pull and dynamic bias magnetic pull effect.Through imitative True analysis and experimental verification, gas force is the main mechanical factor for causing bent axle root inordinate wear, and dynamic bias magnetic pull is Cause the main mechanical factor of bent axle upper end inordinate wear.The generation of dynamic bias magnetic pull is mainly with balance weight with postponing generation Rotating inertia force is relevant.During compressor operation, as rotating inertia force is acted on, crankshaft end can occur flexure so as to deviate Center of rotation, the rotor for assembling therewith also can deviate while producing dynamic with stator center, and thus dynamic bias magnetic pull produces.

From the point of view of the essence that driven eccentric magnetic pull is produced, as long as rotor center is had with its stator center (i.e. center of rotation) partially From dynamic bias magnetic pull can be produced.Try to so that rotor center has rightabout with deformation pre- inclined with stator center From, you can reduce the dynamic offset of rotor in operation process, dynamic bias magnetic pull is substantially reduced, so as to realize improving bent axle Wear and tear abnormal problem for upper end.

According to the compressor crank shaft 100 of this utility model embodiment, by bent axle 100 is set to first paragraph 20 and second Section 30, makes the centrage b of the centrage c and eccentric part 210 of second segment 30 be located at the both sides of the centrage a of first paragraph 20, can be with So that the centrage of the centrage of first paragraph 20 and second segment 30 has a pre- bias, in compressor operating, this is pre- partially The dynamic eccentric magnetic pull at 100 upper end motor position of bent axle can be effectively reduced from amount, so as to effectively improve 100 upper end of bent axle The abnormal problem of abrasion, and then improve the whole service life of compressor crank shaft 100.

According to one embodiment of the present utility model, as shown in figure 3, the distance between centrage a and centrage c are e, e Meet：0 ＜ e≤0.45mm.Thus, it is possible to make between the first paragraph 20 of bent axle 100 and second segment 30, the presence of an eccentric amount e, Through verification experimental verification, when e meets：During 0 ＜ e≤0.45mm, during offset can cause 221 center of stator and rotor 222 to rotate Feel in a pre- bias, in compressor operating, the pre- bias effectively can be reduced because dynamic bias magnetic pull causes 100 upper end of bent axle abrasion, so as to improve the service behaviour of compressor crank shaft 100, improve the service life of compressor.

Further, in some embodiments of the present utility model, as shown in figure 3, the center of the first paragraph 20 of bent axle 100 Line is a, and the centrage of the second segment 30 of bent axle 100 is b, and the distance between centrage a and centrage c are eccentric amount e, are met：e =0.2mm.Through verification experimental verification, as e=0.2mm, exist can the center of stator 221 and the center of rotor 222 pre- inclined From amount, due to deflection deformation that the balance weight of 100 upper end of bent axle is produced when compressor operating can be effectively offset in the pre- bias And the dynamic eccentric magnetic pull for causing, so as to reduce the abrasion of 100 upper end of bent axle, improve the workability of compressor crank shaft 100 Energy and service life.

According to some embodiments of the present utility model, as shown in figs 2-4, second segment 30 includes the first side wall 310 and Two side walls 320, the first side wall 310 are connected with second sidewall 320, and the first side wall 310 and eccentric part 210 are positioned at the same of centrage a , positioned at the both sides of centrage a, the wall thickness of the first side wall 310 is less than first paragraph 20 for side, second sidewall 320 and eccentric part 210 Wall thickness of the wall thickness of wall thickness and second sidewall 320 more than or equal to first paragraph 20.That is, can be the first side wall 310 Wall thickness is more than the wall thickness (as shown in example in Fig. 4) of first paragraph 20 less than the wall thickness of first paragraph 20 and the wall thickness of second sidewall 320； Can also be the wall thickness of the first side wall 310 less than the wall thickness of first paragraph 20 and the wall thickness of second sidewall 320 is equal to first paragraph 20 Wall thickness (as shown in example in Fig. 2).

It should be noted that due to the imbalance when eccentric part 210 that 100 lower end of bent axle is arranged causes bent axle 100 to rotate Property, need to arrange balance weight in the upper end of bent axle 100, in compressor operating, as the inertia force of balance weight is acted on, song can be made The side of balance weight is partial in the upper end of axle 100, and the center of rotation at the center and rotor 222 that consequently leads to stator 221 occurs partially From so as to cause dynamic bias magnetic pull.By the wall thickness of the first side wall 310 to be less than wall thickness and the second sidewall of first paragraph 20 Wall thickness of 320 wall thickness more than or equal to first paragraph 20, can cause 221 center of stator to have one in advance with 222 center of rotor Offset, can should effectively be offset with bias and rotor 222 and 221 center of stator be occurred due to the inertia force of dynamic balance weight The wear problem of 100 upper end of bent axle deviateed and cause, so that improve the service behaviour and service life of bent axle 100.

According to another embodiment of the present utility model, as shown in figure 5, second segment 30 includes the first side wall 310 and second Side wall 320, the first side wall 310 are connected with second sidewall 320, and the first side wall 310 and eccentric part 210 are positioned at the same of centrage a , positioned at the both sides of centrage a, the wall thickness of the first side wall 310 is equal to the wall of first paragraph 20 for side, second sidewall 320 and eccentric part 210 Wall thickness of the wall thickness of thick and second sidewall 320 more than first paragraph 20.Thus, 221 center of stator and rotor 222 can equally be caused Be present an offset in center, led by the dynamic eccentric magnetic pull that balance weight causes in compressor operating such that it is able to effectively counteracting The problem of 100 upper end of the bent axle abrasion of cause.

According to one embodiment of the present utility model, the part as shown in Fig. 2 bent axle 100 can be formed in one.Thus, just In the processing and manufacturing of bent axle 100, so as to reduce production cost.According to other embodiments of the present utility model, such as Fig. 4, Fig. 5 institute Show, first paragraph 20 is detachably connected with second segment 30.It should be noted that on 100 first paragraph of bent axle, 20 installation settings has 230 grade part (as shown in Figure 1) of bearing, first paragraph 20 and second segment 30 is set to be detachably connected, is easy in bent axle 100 230 grade part of upper bearing (metal) is assembled on first paragraph 20.In another embodiment of the present utility model, first paragraph 20 and second segment 30 Can be welded to connect, thus, it is possible to ensure the efficiency of assembling between 100 first paragraph 20 of bent axle and second segment 30, and ensure The steadiness connected between one section 20 and second segment 30.

The compressor according to this utility model embodiment is described with 3 specific embodiments in detail referring to Fig. 1-Fig. 5 Bent axle 100, be worth being understood by, it is described below to be merely illustrative, rather than to concrete restriction of the present utility model.

Embodiment one：

As shown in Figure 1-Figure 3, the bent axle 100 according to the compressor of this utility model embodiment, bent axle 100 are formed in one There is (above-below direction i.e. shown in Fig. 1) along its length to run through its center oilhole 10 for part, bent axle 100, and bent axle 100 is wrapped Include：First paragraph 20 and second segment 30.

Wherein, line a centered on the centrage of first paragraph 20, first paragraph 20 is provided with eccentric part 210, in eccentric part 210 Line b centered on heart line, the lower end of second segment 30 are connected with the upper end of first paragraph 20, line c centered on the centrage of second segment 30, in In heart line a, centrage b and centrage c are generally aligned in the same plane, and centrage b and centrage c is located at centrage a both sides.Centrage The distance between a and centrage c are e, and e meets e=0.2mm.

The second segment 30 of bent axle 100 includes the first side wall 310 and second sidewall 320, the first side wall 310 and second sidewall 320 connections, the first side wall 310 and eccentric part 210 are located at positioned at the same side of centrage a, second sidewall 320 and eccentric part 210 The both sides of centrage a, the wall thickness of the first side wall 310 is less than the wall thickness of first paragraph 20 and the wall thickness of second sidewall 320 is equal to first The wall thickness of section 20.

Thus, by bent axle 100 is set to first paragraph 20 and second segment 30, centrage c and the bias of second segment 30 are made The centrage b in portion 210 is located at the both sides of the centrage a of first paragraph 20, can cause the centrage of first paragraph 20 and second segment 30 With a pre- bias, in compressor operating, the pre- bias can effectively reduce the dynamic of 100 upper end motor position of bent axle Eccentric magnetic pull, the problem abnormal so as to effectively improve the abrasion of 100 upper end of bent axle, and then improve compressor crank shaft 100 Whole service life.

Embodiment two：

As shown in figure 4, embodiment two with the difference of embodiment one is：Second segment 30 includes 310 He of the first side wall Second sidewall 320, the first side wall 310 are connected with second sidewall 320, and the first side wall 310 and eccentric part 210 are positioned at centrage a's The same side, second sidewall 320 and eccentric part 210 are less than first paragraph 20 positioned at the both sides of centrage a, the wall thickness of the first side wall 310 Wall thickness and second sidewall 320 wall thickness more than first paragraph 20 wall thickness, the first paragraph 20 and second segment 30 of bent axle 100 are removable Unload connection or be welded to connect.

Thus, it is possible to while 100 upper end inordinate wear problem of bent axle is effectively improved, be easy to 20 bent axle 100 of first paragraph Upper installation 230 grade parts of upper bearing (metal).

Embodiment three：

Embodiment three with the difference of embodiment one is：Second segment 30 includes the first side wall 310 and second sidewall 320, the first side wall 310 is connected with second sidewall 320, the first side wall 310 and eccentric part 210 positioned at the same side of centrage a, the Positioned at the both sides of centrage a, the wall thickness of the first side wall 310 is equal to the wall thickness of first paragraph 20 and for two side walls 320 and eccentric part 210 The wall thickness of two side walls 320 more than first paragraph 20 wall thickness, the first paragraph 20 and second segment 30 of bent axle 100 be detachably connected or It is welded to connect.

Thus, it is possible to while 100 upper end inordinate wear problem of bent axle is effectively improved, be easy in 20 bent axle of first paragraph 230 grade parts of upper bearing (metal) are installed on 100.

According to the compressor of this utility model embodiment, including：Housing, electric machine assembly 220 and bent axle 100.

Wherein, electric machine assembly 220 is located in housing, and electric machine assembly 220 includes stator 221 and rotor 222, stator 221 It is fixed on housing, bent axle 100 is bent axle 100 described above, and rotor 222 is set on the second segment 30 of bent axle 100, rotor Ultimate range between 222 periphery wall and the internal perisporium of stator 221 is L1, the periphery wall of rotor 222 and the inner circumferential of stator 221 Minimum range between wall is met for L2, L1 and L2：0 ＜ L1-L2≤0.9mm.

The first paragraph 20 of bent axle 100 is suitable to be connected with compression mechanism, and compression mechanism includes：Placement is stacked gradually from top to bottom Upper bearing (metal) 220, cylinder assembly and lower bearing 230, the lower end of the first paragraph 20 sequentially pass through from top to bottom upper bearing (metal) 220, The eccentric part in cylinder assembly and lower bearing 230, cylinder with compression chamber, bent axle is located at compression intracavity.

Thus, by ultimate range L1 between the periphery wall and the internal perisporium of stator 221 of setting rotor 222 and most narrow spacing Meet from L2：0 ＜ L1-L2≤0.9mm, can cause the center of rotor 222 and the center of stator 221 to there is pre- bias, from And effectively can reduce reducing the dynamic eccentric magnetic pull at 100 upper end motor position of bent axle, so as to effectively improve on bent axle 100 The abnormal problem of end abrasion, and then improve the whole service life of compressor crank shaft 100.

Further, in some embodiments of the present utility model, L1 and L2 can also meet：L1-L2=2e.Wherein, e Centered on the distance between line a and centrage c.Thus, can equally cause rotor 222 center and stator 221 in feel In pre- bias, such that it is able to effectively reduce the dynamic eccentric magnetic pull at 100 upper end motor position of bent axle, bent axle is effectively improved The abnormal problem of 100 upper ends abrasion, and then improve the whole service life of compressor crank shaft 100.

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

Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is Exemplary, it is impossible to it is interpreted as to restriction of the present utility model, one of ordinary skill in the art is in scope of the present utility model It is interior above-described embodiment to be changed, be changed, being replaced and modification.

Claims (10)

1. a kind of bent axle of compressor, it is characterised in that the bent axle has center oilhole and institute along its length through which Stating bent axle includes：

First paragraph, line a centered on the centrage of the first paragraph, the first paragraph are provided with eccentric part, in the eccentric part Line b centered on heart line；

Second segment, the lower end of the second segment are connected with the upper end of the first paragraph, line centered on the centrage of the second segment In c, the centrage a, the centrage b and the centrage c are generally aligned in the same plane, and the centrage b and the center Line c is located at the centrage a both sides.

2. the bent axle of compressor according to claim 1, it is characterised in that between the centrage a and the centrage c Distance be e, the e meets：0 ＜ e≤0.45mm.

3. the bent axle of compressor according to claim 2, it is characterised in that the e=0.2mm.

4. the bent axle of compressor according to claim 1, it is characterised in that the second segment includes the first side wall and second Side wall, the first side wall are connected with the second sidewall, and the first side wall and the eccentric part are positioned at the centrage a's The same side, the second sidewall and the eccentric part are less than institute positioned at the both sides of the centrage a, the wall thickness of the first side wall The wall thickness of the wall thickness and the second sidewall of stating first paragraph is more than or equal to the wall thickness of the first paragraph.

5. the bent axle of compressor according to claim 1, it is characterised in that the second segment includes the first side wall and second Side wall, the first side wall are connected with the second sidewall, and the first side wall and the eccentric part are positioned at the centrage a's The same side, the second sidewall and the eccentric part are equal to institute positioned at the both sides of the centrage a, the wall thickness of the first side wall The wall thickness of the wall thickness and the second sidewall of stating first paragraph is more than the wall thickness of the first paragraph.

6. the bent axle of compressor according to claim 1, it is characterised in that the bent axle is formed in one part.

7. the bent axle of compressor according to claim 1, it is characterised in that the first paragraph is detachable with the second segment Ground connection.

8. the bent axle of compressor according to claim 1, it is characterised in that the first paragraph is welded with the second segment.

9. a kind of compressor, it is characterised in that include：

Housing；

Electric machine assembly, the electric machine assembly are located in the housing and including stator and rotor, and the stator is fixed on the shell On body；With

Bent axle, the bent axle is the bent axle according to any one of claim 1-8, and the rotor is set in the bent axle On the second segment, the ultimate range between the internal perisporium of the periphery wall of the rotor and the stator is L1, the rotor Minimum range between the internal perisporium of periphery wall and the stator is met for L2, the L1 and the L2：0 ＜ L1-L2≤ 0.9mm。

10. compressor according to claim 9, it is characterised in that the L1 and the L2 also meet：L1-L2=2e, its In, the distance between the centrage a and the centrage c are e.