CN102562527A

CN102562527A - Refrigerant compressor

Info

Publication number: CN102562527A
Application number: CN2011104522204A
Authority: CN
Inventors: F·H·艾弗森
Original assignee: Secop GmbH
Current assignee: Secop GmbH
Priority date: 2010-11-12
Filing date: 2011-11-14
Publication date: 2012-07-11
Anticipated expiration: 2031-11-14
Also published as: DE102010051265A1; DE102010051265B4; RU2497052C2; CN102562527B; RU2011144830A

Abstract

The refrigerant compressor (1) has an electric motor (3), a stator (5), a rotor (4), a compressor unit (2) arranged on an annular base element (15), and a support element (13). The base element covers the largest portion of the periphery and most of the axial portion of the motor. The base element and the support element are designed as sheet metal portion.

Description

Coolant compressor

Technical field

The present invention relates to a kind of hermetically enclosed formula coolant compressor, it has the motor that comprises stator and rotor, and has the compressor unit that is arranged on the support that comprises support element and annular base element.

Background technique

For example, this kind compressor can obtain from DE102008024671A1.Here, compressor unit is fixed on the support element that is connected to base component, and this base component is fixed on the front side, top of this stator.This base component is made into sheet metal parts with this support element, and this support element is bigger than the thickness of this base component.

This kind coolant compressor can be manufactured into quite little quality.Yet its mode with rather unstable turns round and when this compressor unit is clashed into the shell of this compressor, can produce the Back drop wave noise when low speed.

For example, coolant compressor is used in chiller plant such as refrigerator and freezer.Except the little part height of this coolant compressor, it also needs low-energy-consumption.When this chiller plant has better isolated material, can reach lower energy consumption through the speed that reduces this coolant compressor.Yet known low speed coolant compressor usually turns round with unsettled mode.

Summary of the invention

The present invention is based on provides a kind of purpose with coolant compressor of little part height, and it also can operation reposefully under low speed.

According to the present invention, like the coolant compressor of mentioning in the preface, this purpose can through this base component cover this motor the largest portion of its circumference with and axially extended largest portion reach.

In a sense, this means that this motor partly is contained in this support.This makes and makes the part minimized height become possibility in the axial direction.Simultaneously, radially have sufficient space, so this base component can be processed and therefore has a relatively large quality with more relatively material in outside this base component of this motor.The big quality of this base component will reduce vibration and the on the other hand mobile resonance range of this coolant compressor in operation process on the one hand, so that the humorous concussion of this coolant compressor can not occur when low speed.Because the radially outer of this base component arranges that quality radially is arranged in the motor outside, significant growth has appearred in mass inertia, and this will weaken the rotation concussion at the startup and the stopping period of this coolant compressor.This has prevented the housing of this compressor unit this shell of bump or this compressor reliably.

Particularly preferably be that this base component is made into foundry goods and this support element is made into sheet metal parts.This sheet metal parts can be made into and have relatively little quality and little material thickness and still have enough intensity then.This base component is made into foundry goods and makes it possible to realize that cost is made efficiently and still possible free forming relatively.

Preferably, this support element is basically radially arranged in this base component inside.This annular base element is around free space, and wherein this motor is arranged in this free space.This free space is covered at this inner support element of this base component by radial arrangement now.Yet additionally this carrier unit also can radially cover this base component, and for example, this can help simple fixing.With this kind connection, this compressor unit is fixed on this carrier unit, and this base unit is arranged in this support element that side in the face of this motor.

In a preferred embodiment, this rotor becomes external rotor.Therefore, have same performance, this motor structure becomes to have little part height.This rotor can comprise circle segments shape permanent magnet.Since this disposed outside motor, this magnet easy mounting.

Preferably, this carrier unit axially mounting is at least one supporting point, preferably on three supporting points of this stator.Therefore, this motor all is positioned on this support element with this compressor unit.Through this supporting point, the lateral force that particularly appears at during the compression stroke can be received, thereby has reduced the bending load of element replacement or this support element or be arranged in the radial bearing in this support element.Further, the contact between this stator and this support element has strengthened the rigidity of this coolant compressor, and this makes vibration reduce.In a word, this makes this coolant compressor turn round stably.In this connected, this base component that on axial direction and circumferencial direction, covers this motor major component can be made into and make itself and this motor not have point of contact.This means that it can be manufactured with high relatively allowable deviation.

Preferably, this base component dorsad a side of compressor unit be provided with the receiving cavity that is used for supporting element.For example, this supporting element is an elastic element, and it is positioned at the bottom of the housing of this compressor case or this coolant compressor.For example, this receiving cavity end that can be made into sagged shape and hold this supporting element.Therefore, this compressor unit with motor can be by flexibly supporting in this shell.

Preferably, the radial bearing that is used to be connected to the main shaft of this rotor is connected to this support element, is pressed into especially in the opening of this support element.For example, this radial bearing with bearing housing is arranged in the inside of the opening in this stator, and this stator also is fixed on this radial bearing.Then, through this radial bearing, this stator also is fixed on this support element.The additional cod that is used for rotor can be used for limiting the axial position of this rotor with respect to this stator.Combine this radial bearing or this bearing housing realization cost effectively to make through the mode that is pressed into.

Preferably, this compressor unit comprises cylinder and the piston of in this cylinder, guiding, valve system and pressure baffler and it can be fixed on this support as builtup member especially.This has guaranteed that this coolant compressor relatively simply assembles.

An end that particularly preferably is this main shaft comprises the crank pin that is connected to piston through connecting rod.This embodiment has realized relatively simply rotatablely moving of this main shaft being transformed into the straight line motion of this piston.

Preferably, this support element interconnects with the mode of this base component through three tie points.This means that three tie points or point of contact are formed between this support element and this base component.Therefore, this base component can keep stable and on this support element, not receive tensile force.

Description of drawings

Next through preferred embodiment and explained the present invention, illustrate:

Fig. 1 is the sectional drawing of coolant compressor, and

Fig. 2 is the graphics of support.

Embodiment

Fig. 1 has shown a kind of sectional view of coolant compressor.This coolant compressor 1 comprises compressor unit 2 and motor 3 compositions.This compressor unit 2 is disposed in the sealing casing of sealing with this motor 3, and this casing does not show.

This motor 3 comprises rotor 4 and stator 5.This rotor 4 is made into external rotor and is centered around around this stator 5.This stator 5 comprises permanent magnet 6, and is radially surrounded by short-circuited conducting sleeve 7.Through base section 8, this rotor 4 can not link to each other with main shaft 9 rotationally, and this main shaft 9 extends through the center drilling at this stator 5.This main shaft 9 remains in the bearing housing 10 of radial bearing.This stator 5 is fixed on this bearing housing 10.

In the inside of this main shaft 9, arranged displacement component 11, between this displacement component 11 and this hollow main shaft 9, formed pipeline road.Formed axially support 12 in these main shaft 9 inside, it has confirmed the axial position of this rotor 4.

This compressor unit 2 is connected with each other through support 13 with this motor 3, and this support comprises the base component 15 of support element 14 and ring-type.This base component 15 is surrounded this motor 3 at its circumferential largest portion.In addition, this base component 15 covers motor on it extends axially the largest portion of direction, promptly in the axial sense of rotation of this main shaft 9 or this rotor 4.Therefore, in a sense, the major part of this motor 3 is contained in this support 13 or this base component 15.

This support element 14 has covered the free space that is surrounded by this base component 15, and motor 3 is arranged in this space.Therefore this support element 14 is disposed in the base component basically, and preferably fixes at three point of contact places and this base component 15.The point 31 one of them be positioned at piston-cylinder unit 8 zones, as shown in Figure 1.This base component 15 makes this support element 14 rigidity grows, causes distortion to avoid its power that is occurred in running.This bearing housing 10 and corresponding radial bearing link to each other with this support element 14 through the mode of the adaptive cooperation of power.This has guaranteed simple relatively Placement.But also can be bonding or weld this bearing housing 10 to this support element 14.

Through supporting point 17, this support element 14 is bearing on this stator 5 that is positioned at these piston cylinder units 18 zones.Therefore, this motor 3 all supports on this support element 14 with this compressor unit 2, and 15 of this base component are connected with this support element 14 and other part is freely arranged.

This piston cylinder units 18 comprises cylinder 19 and the linear mobile piston 20 in above-mentioned cylinder.This piston 20 is driven by connecting rod 21 and crank pin 22, and crank pin 22 is connected to this main shaft 9 prejudicially.

This base component 15 is made into foundry goods, and can be made into the required shape of relatively economical mode.This support element 14 is made into the sheet metal plate component.Therefore this base component 15 comprises than the big relatively quality of this support element.This makes has big relatively quality and therefore forms big relatively quality inertia at radially outer.Opposite, the core with coolant compressor 1 of this support element 14 then is made into light relatively and allows little part height.Yet this support element 14 is as metal plate component and link to each other a little with 15 3 of this base component that 31 embodiment still has enough mechanical stabilities, and has little material thickness, to be contained in the power that produces in the running.This quality inertia is basically by these base component 15 decisions.

This support 13 that in Fig. 2, has this support element 14 and this base component 15 illustrates with graphics.The bearing housing 10 of this radial bearing is pressed in the central opening of this support element 14 and at axial direction and extends.This base component 15 be annular and round the free space that is covered by support element 14.Connect with this, this support element 14 radially is arranged in the inside of this base component 15 basically.This support element 14 relies on the upside of this base component 15 and faces this compressor unit 2, not shown in Fig. 2.Therefore under the assembling condition of this coolant compressor 1, this base component 15 is arranged in below this support element 14.

On the bottom side 23 of this base component 15 of compressor unit 2 dorsad; This base component 15 comprises receiving

cavity

24,25,26,27; It is used to hold the purpose of supporting element, can be positioned in the housing of shell or coolant compressor 1 through this base component 15 of this mode.This supporting element can be helical spring form.Through this support 13 or this base component 15, this compressor unit 2 also receives flexibly supporting with this motor 3 then.This base component 15, this motor 3 and this compressor unit 2 are fixed on this carrier unit 14.

On its bottom side, this support element 14 has three

convexities

28,29,30, and it is used to form supporting point, axially is bearing on the stator 5 of this motor 3 through this support element 14 of this mode.Can shift lateral force through these supporting points, it shows during the compression stroke of this piston cylinder units 18 especially, and it can be pressed in this bearing housing 10 through bending.This means that this supporting point has reduced the stress of this radial bearing.

Forming accurate three protrusions or the result that causes of supporting point is that the qualification that on this stator 5, has this support element 14 is supported.If possible, this supporting point should be arranged to radially near the edge of this stator and be positioned at the lamination zone, center of this stator.At least one supporting point 17 should be arranged in this piston cylinder units 18 below.Therefore this has guaranteed good rigidity, has prevented because this bearing housing 10 tilts to make the perk of these main shaft 9 crank pins.

Through this base component is arranged in this motor around; This motor; In a sense; Be positioned at the free space of this base component, reducing has appearred in the part height of this coolant compressor, and the quality in outside radially far away relatively of this base component is arranged high quality inertia is provided simultaneously.This support element that this compressor unit is connected to this motor can be formed relative thin because it is to the not contribution of quality inertia.In view of the above, the part height of this support element and therefore the height of this integrally cooling agent compressor be minimized.The quality inertia of this disposed outside has been guaranteed can realize in the slow-speed of revolution and the smooth running that starts this coolant compressor of stopping period simultaneously.

Claims

1. coolant compressor with motor and compressor unit; This motor comprises stator and rotor; This compressor unit is arranged on the support that comprises support element and annular base element; It is characterized in that, this base component covered this motor circumference largest portion with and axially extended largest portion.

2. coolant compressor as claimed in claim 1 is characterized in that, this base component (15) is made into foundry goods and this support element (14) is made into the sheet metal parts.

3. according to claim 1 or claim 2 coolant compressor is characterized in that this support element (14) radially is arranged in the inside of this base component (15) basically.

4. like the described coolant compressor of one of claim 1 to 3, it is characterized in that this rotor (4) is made into external rotor.

5. like the described coolant compressor of one of claim 1 to 4, it is characterized in that this support element (14) axially is bearing at least one point of supporting point (17), preferably is being supported on the stator (5) on three strong points.

6. like the described coolant compressor of one of claim 1 to 5, it is characterized in that this base component (15) side (23) of compressor unit (2) dorsad is provided with the receiving cavity (24,25,26,27) that is used for supporting element.

7. like the described coolant compressor of one of claim 1 to 6, it is characterized in that the radial bearing (10) that is used to be connected to the main shaft (9) of this rotor (4) is connected to this support element (14), is pressed into especially in the opening of this support element (14).

8. like the described coolant compressor of one of claim 1 to 7; It is characterized in that; Piston (20), valve system and pressure baffler that this compressor unit (2) comprises cylinder (19) and in this cylinder, guides, and this compressor unit (2) can be used as sub-builtup member and is fixed on this support (13) especially.

9. like the described coolant compressor of one of claim 1 to 8, it is characterized in that an end of this main shaft (9) comprises the crank pin (22) that is connected to this piston (20) through connecting rod (21).

10. like the described coolant compressor of one of claim 1 to 9, it is characterized in that this support element (14) and this base component (15) interconnect through the mode of three tie points (31).