CN101630880A - Motor device of cooling compressor - Google Patents
Motor device of cooling compressor Download PDFInfo
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- CN101630880A CN101630880A CN200810040579A CN200810040579A CN101630880A CN 101630880 A CN101630880 A CN 101630880A CN 200810040579 A CN200810040579 A CN 200810040579A CN 200810040579 A CN200810040579 A CN 200810040579A CN 101630880 A CN101630880 A CN 101630880A
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Abstract
The invention relates to a motor device of a cooling compressor. A motor shell is provided with a coolant inlet and a coolant outlet, wherein the coolant inlet is provided with a barrier rib which divides the coolant inlet; a stator is divided into a plurality of stator sections by a ring groove; the outer surface of the stator is provided with an axial slot way; an air chamber communicated with the coolant inlet and the ring groove is reserved between the stator and the motor shell; and the axial slot way communicates the air chamber and a coil chamber in the motor shell directly. The motor device has the advantage of improving the overall cooling effect because the coolant is conducted to the air chamber by the barrier first rib after flowing into the device from the inlet so that the stator contacted with the air chamber is cooled.
Description
Technical field
The present invention relates to a kind of compressor, relate in particular to the cooling structure of this compressor motor.
Background technology
As seen from Figure 1: typical refrigeration system roughly comprises compressor 90, condenser 91, expansion valve 92, reaches evaporator 93.Its running is: compressor 90 receives gaseous coolant and its pressurization is formed the HTHP gaseous coolant, then refrigerant being conveyed into condenser 91 lowers the temperature and becomes liquid, the operative liquid refrigerant expansion valve 92 of flowing through carries out the puffing step then, the liquid refrigerants of puffing flows to into evaporator 93 again and is transformed into gaseous state, sends into compressor 90 afterwards again and repetitive cycling.This shows: compressor lacks one of equipment for obtaining in refrigeration system; And compressor is of a great variety, and reciprocating type, rotary, scroll-type, spiral, and centrifugal etc. is arranged.
As seen from Figure 2: it is a kind of centrifugal coolant compressor cutaway view commonly used.Centrifugal compressor is applied to medium-and-large-sized air-conditioning system more, and the main driving refrigeration system gaseous coolant of being responsible for is finished a thermodynamic cycle.
Mainly be equiped with a rotor 95, a stator 96 in the motor shell 94 of this cold medium compressor, reach a rotating shaft 97, wherein stator 96 is fixed in two fixed part 945a and 945b of hoop projection in the motor shell 94 with the outer ring surface of part (near the position at two axial ends place) contact, also surrounding rotor 95 simultaneously is fixed in the rotor 95 and unitary rotation but 97 of rotating shafts place.Respectively there are a coil- end 98a and 98b to extend in stator 96 both end sides, coil-end 98a and space, 98b place are called 941a of coil chamber and 941b at this.96 of rotor 95 and stators have a gap 951.In addition, define an air chamber 942 between two fixed part 945a and the 945b.This air chamber 942 also the position stator 96 outside among the ring surface between between part and motor shell 94 inner faces, have predetermined altitude and axial length, and air chamber 942 be hoop sealing round stator 96.
Therefore air chamber 942 is blockaded at axially be fixed 945a of portion and 945b, does not directly communicate with 941b with the 941a of coil chamber.Stator 96 is to be made of a plurality of stator sections 961 and 962, between the stator section 961 and 962 is to be separated by a circular groove groove 963 to define.
Existing cold medium compressor has a cooling way at motors designs, that is offer refrigerant inlet 943, and two refrigerant exit 944a and 944b at motor shell 94 bottom diverse locations, show among the figure that refrigerant inlet 943 is to be positioned under the air chamber 942,944 of two refrigerant exits are opened in two lateral coil chamber 941a and 941b respectively.When refrigerant is introduced into motor shell 94 from refrigerant inlet 943, its flow path is described as follows:
At first partly liquid refrigerants can be because of the big atomizating phenomenon that produce of area change suddenly less when inlet 943 enters the air chamber 942 of motor shell 94 when liquid refrigerants.In addition, because of the event of opening direction, most liquid refrigerants then can be directly towards circular groove groove 963 mobile and whole being full of, and only cool off one of corresponding circular groove groove 963 sidewalls partial stator 96 this moment; When liquid refrigerants flow to circular groove groove 963 with 951 confluces, gap, just to shunt simultaneously along two side clearances 951, can be cooled to the zone of rotor 95 outsides and stator 96 inboards this moment; Then refrigerant 951 flows out to two coil chamber 941a and 941b from the gap, mainly line two circle end 98a is cooled off with 98b, and the discharge of refrigerant is certainly just by refrigerant exit 944a and 944b discharge.
It is poor bigger with power loss that but the problem that this structure exists is a cooling effect.
Summary of the invention
The technical issues that need to address of the present invention have provided a kind of device of cooling compressor motor, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
The present invention includes: a motor shell, include two coil chamber, refrigerant inlet, reach a refrigerant exit, this two coil chamber lays respectively at two sides, and this refrigerant inlet is to provide to be communicated with inner in the surface with this refrigerant exit; One power unit, be placed in this motor shell inside, include a stator, one rotor, one rotating shaft, and two coil end, this track ring is around this rotor, the unitary rotation but this rotating shaft is passed and be fixed in this rotor, this two coil end extends to this two coil chamber from two ends of this stator respectively, wherein this stator includes a circular groove groove, an and axial slot, this circular groove groove is cut apart this stator and is defined a plurality of stator sections, this axial slot system is arranged with the outer ring surface in this stator, and to have a gap between this stator and this rotor be to be connected with this circular groove groove and this two coil chamber;
One air chamber is to be formed between the inner surface of the outer ring surface of this stator and this motor shell, and directly is communicated with this refrigerant inlet, this circular groove groove, also is connected with this two coil chamber through this axial slot; Also comprise: an inlet barrier rib, be located at this refrigerant porch, this refrigerant inlet is divided into two sons that are connected with this air chamber, guide a refrigerant to flow to this air chamber enters the mouth.
By the said structure design,,, promoted whole cooling effect so the motor stator outer surface is greatly increased by the cold degree of refrigerant cooling because of most of liquid refrigerants is guided the air chamber gasification of flowing through.
Compared with prior art, the invention has the beneficial effects as follows: flow toward air chamber because refrigerant can be blocked the rib guiding earlier after inlet flows into, make the stationary part that is contacted with air chamber obtain cooling effect, promoted the whole cooling effect of motor.
Description of drawings
Fig. 1 is typical refrigeration system schematic diagram.
Fig. 2 is a centrifugal coolant compressor cutaway view in the prior art.
Fig. 3 is the cold medium compressor stereogram of a preferred embodiment of the present invention.
Fig. 4 is the plane graph from Fig. 3 viewpoint C observation.
Fig. 5 is the cutaway view along the A-A line of Fig. 4.
Fig. 6 is the inner detailed view of motor shell.
Fig. 7 is the detailed view of refrigerant inlet.
Fig. 8 is the plan view of motor stator.
Fig. 9 is refrigerant flow path schematic diagram in motor shell.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
With reference to figure 3 to Fig. 5: cold medium compressor is roughly by the compression shell 10 that coats compression assembly, constituted with the motor shell 20 that coats motor sub-assembly.
Be equipped with a power unit in motor shell 20, power unit comprises a stator 21, a rotor 22, a rotating shaft 23 and two coil end 24a and 24b.Said stator 21 is around rotor 22, but 23 of rotating shafts are to pass and be fixed in the rotor 22 and unitary rotation.Coil- end 24a and 24b are that coil passes axially that silicon steel sheet constitutes and the part of stretching out from two terminal surfaces respectively in the stator 21, and it more extends to the other position of more inclined to one side two sides in the motor shell 20, claims that this position is 203a of coil chamber and 203b.
Provided on motor shell 20 surfaces and be communicated with one of inside and outside refrigerant inlet 201, an and refrigerant exit 202.With general facility user mode viewpoint, be reference direction just with gravity direction G, refrigerant inlet 201 is to be located at motor shell 20 tops, 202 of refrigerant exits are located at motor shell 20 bottoms.
Simultaneously with reference to figure 6, stator 21 is fixed in two fixed part 204a and 204b of hoop projection in the motor shell 20 with the outer ring surface contact of part, and defines an air chamber 25 between two fixed part 204a and the 204b herein.Especially, in this example, because of each fixed part does not surround into a unbroken loop, two ends of fixed part 204a two ends corresponding with fixed part 204b link jointly and form two walls 252 of blockading, make air chamber 25 on hoop, not open at breach 251, but at breach 251 place's blockings, so air chamber 25 is the non-closed circular air chamber of a band breach 251.Breach 251 also is communicated with two coil chamber 203a and 203b simultaneously.Air chamber 25 has predetermined height and axial length.
With reference to figure 6 and Fig. 7, clearly illustrated air chamber 25, refrigerant exit 202 among the figure, reached refrigerant inlet 201 herein.Still be installed with an inlet barrier rib 26, outlet barrier rib 27 separately in refrigerant inlet 201, refrigerant exit 202 places, while near surface location within the motor shell 20, inlet barrier rib 26 is divided into two son inlet 201a and the 201b that are connected with air chamber 25 with refrigerant inlet 201, and outlet barrier rib 27 is divided into two mouthfuls with refrigerant exit 202 too.Above-mentioned two barrier ribs all are provided with perpendicular to rotating shaft 23.So can allow gaseous coolant also under isolating, more be uniformly distributed in 203a of coil chamber and 203b both sides at outlet barrier rib 27.
With reference to figure 5 and Fig. 8: whole stator 21 is to be made of two stator section 21a and 21b that a circular groove groove 211 is separated out, certainly, has copper coil to pass wherein in the circular groove groove 211.The first-class angle of stator 21 outer ring surfaces is concaved with 12 road axial slot 212, makes air chamber 25 axially be communicated in two coil chamber 203a and 203b.
As prior art, 22 of stator 21 and rotors still have a gap 221, are to be communicated to two coil chamber 203a 203b.Therefore, air chamber 25 can be communicated in gap 221 by circular groove groove 211 too.
With reference to figure 8 and Fig. 9: when motor sees through refrigerant and cools off, its refrigerant flow path such as following: at first refrigerant enters and by 26 shuntings of inlet barrier rib and flow to two son inlet 201a and 201b (being plotted in Fig. 7), can directly not be full of along circular groove groove 211 as the most of liquid refrigerants of prior art from refrigerant inlet 201.In this stage, one of contact the cooling effect that partial stator 21 outer ring surfaces can be subjected to whole refrigerants really with air chamber 25.
Then when refrigerant after air chamber 25 gasifications are full of, one side conduit 212 vertically flows to two lateral coil chamber 203a and 203b (less on the ratio), also begins on the other hand in a large number to flow to crack 221 between 22 of stator 21 and the rotors along circular groove groove 211.In this stage, one of comprised by the position of refrigerant cooling to contact partial stator section 21a and 21b, and a part of rotor 22 and stator 21 of contact gap 221 with circular groove groove 211, therefore be that major part is cooled off by gaseous coolant the time, when motor rotor rotates, can reduce the loss of a power, avoid the liquid refrigerants shock effect.
At last, enter the 203a of coil chamber and 203b cooling coil end 24a and 24b, and flow out motor shells 20 from the refrigerant exit 202 of breach 251 (being plotted in Fig. 6) from the refrigerant of shaft orientation flowing channel 212, gap 221 outflows.
From the above, the refrigerant that the present invention enters through 26 guiding of inlet barrier rib flows to air chamber 25 and cools off, and prevents that liquid refrigerants directly is full of to circular groove groove 211.Therefore, compared to existing technology, the present invention makes motor greatly increased by the cold degree of refrigerant cooling, also improves existingly to underuse the shortcoming that air chamber cools off, and avoids consuming the effect of shaft work because of liquid refrigerants impact rotors in a large number.Refrigerant enters the mouth more can increase the cooling uniformity in the design at top, and with Fig. 2 in contrast, refrigerant exit and inlet be all in motor bottom, so after refrigerant enters, and is not easy to blow to the motor first half, causes air-flow skewness state easily.
Claims (7)
1. the device of a cooling compressor motor comprises: a motor shell, include two coil chamber, refrigerant inlet, an and refrigerant exit, and this two coil chamber lays respectively at two sides, and this refrigerant inlet is to provide in the surface to be communicated with inside with this refrigerant exit; One power unit, be placed in this motor shell inside, include a stator, one rotor, one rotating shaft, and two coil end, this track ring is around this rotor, the unitary rotation but this rotating shaft is passed and be fixed in this rotor, this two coil end extends to this two coil chamber from two ends of this stator respectively, wherein this stator includes a circular groove groove, an and axial slot, this circular groove groove is cut apart this stator and is defined a plurality of stator sections, this axial slot system is arranged with the outer ring surface in this stator, and to have a gap between this stator and this rotor be to be connected with this circular groove groove and this two coil chamber; One air chamber is to be formed between the inner surface of the outer ring surface of this stator and this motor shell, and directly is communicated with this refrigerant inlet, this circular groove groove, also is connected with this two coil chamber through this axial slot; It is characterized in that also comprising: an inlet barrier rib, be located at this refrigerant porch, this refrigerant inlet is divided into two sons that are connected with this air chamber, guide a refrigerant to flow to this air chamber enters the mouth.
2. the device of cooling compressor motor according to claim 1 is characterized in that: also comprise one the outlet barrier rib be located at this refrigerant exit place.
3. the device of cooling compressor motor according to claim 1 is characterized in that: this vertical this rotating shaft of inlet barrier rib system is provided with.
4. the device of cooling compressor motor according to claim 1 is characterized in that: this refrigerant inlet is positioned at this motor shell top.
5. the device of cooling compressor motor according to claim 1 is characterized in that: this refrigerant exit is positioned at this motor shell bottom.
6. the device of cooling compressor motor according to claim 1 is characterized in that: this air chamber is the ring-type air chamber of a band breach, and this breach is linked up this two coil chamber.
7. the device of cooling compressor motor according to claim 6 is characterized in that: this refrigerant exit is positioned at this air chamber breach scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810040579A CN101630880A (en) | 2008-07-15 | 2008-07-15 | Motor device of cooling compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810040579A CN101630880A (en) | 2008-07-15 | 2008-07-15 | Motor device of cooling compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101630880A true CN101630880A (en) | 2010-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810040579A Pending CN101630880A (en) | 2008-07-15 | 2008-07-15 | Motor device of cooling compressor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102884715A (en) * | 2010-05-14 | 2013-01-16 | 罗伯特·博世有限公司 | Method for producing an electric motor |
| CN103780022A (en) * | 2012-10-18 | 2014-05-07 | 上海汉钟精机股份有限公司 | Compressor motor cooling structure |
| CN103821717A (en) * | 2012-11-15 | 2014-05-28 | 株式会社丰田自动织机 | Motor-driven compressor |
| CN104782030A (en) * | 2012-11-12 | 2015-07-15 | 西门子公司 | Cooling system for electric generators |
| CN109038957A (en) * | 2017-06-11 | 2018-12-18 | 何巨堂 | The shield electric machine and its shielded electric pump of cold house outside electric machine casing inner stator half way |
-
2008
- 2008-07-15 CN CN200810040579A patent/CN101630880A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102884715A (en) * | 2010-05-14 | 2013-01-16 | 罗伯特·博世有限公司 | Method for producing an electric motor |
| CN103780022A (en) * | 2012-10-18 | 2014-05-07 | 上海汉钟精机股份有限公司 | Compressor motor cooling structure |
| CN104782030A (en) * | 2012-11-12 | 2015-07-15 | 西门子公司 | Cooling system for electric generators |
| CN104782030B (en) * | 2012-11-12 | 2017-02-22 | 西门子公司 | Cooling system for electric generators |
| US9882455B2 (en) | 2012-11-12 | 2018-01-30 | Siemens Aktiengesellschaft | Cooling system for electric generators |
| CN103821717A (en) * | 2012-11-15 | 2014-05-28 | 株式会社丰田自动织机 | Motor-driven compressor |
| CN103821717B (en) * | 2012-11-15 | 2016-01-20 | 株式会社丰田自动织机 | Motor driven compressor |
| US9243638B2 (en) | 2012-11-15 | 2016-01-26 | Kabushiki Kaisha Toyota Jidoshokki | Motor-driven compressor including a rotor core having a refrigerant passage |
| CN109038957A (en) * | 2017-06-11 | 2018-12-18 | 何巨堂 | The shield electric machine and its shielded electric pump of cold house outside electric machine casing inner stator half way |
| CN109038957B (en) * | 2017-06-11 | 2020-12-25 | 何巨堂 | Shielded motor of half-stroke external cooling chamber for motor shell internal stator and shielded electric pump thereof |
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Open date: 20100120 |