CN103780022A - Compressor motor cooling structure - Google Patents
Compressor motor cooling structure Download PDFInfo
- Publication number
- CN103780022A CN103780022A CN201210399314.4A CN201210399314A CN103780022A CN 103780022 A CN103780022 A CN 103780022A CN 201210399314 A CN201210399314 A CN 201210399314A CN 103780022 A CN103780022 A CN 103780022A
- Authority
- CN
- China
- Prior art keywords
- refrigerant
- stator
- air chamber
- entrance
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention relates to a compressor motor cooling structure. The motor housing is provided with a refrigerant inlet and a refrigerant outlet in a run-through manner. The refrigerant inlet is provided with a barrier rib to divide the refrigerant inlet. The stator is divided into a plurality of stator sections through an annular groove. The outer surface of the stator is provided with an axial channel, and an air chamber which is communicated with the refrigerant inlet and the annular groove exists between the stator and the motor housing. The axial channel is used to make the air chamber directly communicated with a coil chamber in the motor housing. The refrigerant is guided by the barrier rib so as to flow to the air chamber after flowing in through the inlet so as to be in contact with the stator portion of the air chamber to obtain the cooling effect, so the motor overall cooling effect can be improved.
Description
Technical field
The present invention relates to a kind of compressor, relate in particular to a kind of cooling structure of compressor motor.
Background technology
Fig. 1 is typical refrigeration system schematic diagram.Typical case's refrigeration system roughly comprises compressor 90, condenser 91, expansion valve 92 and evaporator 93, its running is: compressor 90 receives gaseous coolant and pressurizeed and forms HTHP gaseous coolant, then refrigerant being conveyed into condenser 91 lowers the temperature into liquid, then the operative liquid refrigerant expansion valve 92 of flowing through carries out puffing step, the liquid refrigerants of puffing flows to into evaporator 93 again and is transformed into gaseous state, sends into afterwards compressor 90 and repetitive cycling again.Therefore known compressor lacks one of equipment for obtaining in refrigeration system, and compressor is of a great variety, there is reciprocating, rotary, scroll-type, spiral and centrifugal etc.
With reference to figure 2, it is a kind of prior art centrifugal coolant compressor cutaway view.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 completes a thermodynamic cycle.
The motor shell 94 of this cold medium compressor is interior is mainly equiped with a rotor 95, a stator 96 and a rotating shaft 97, wherein stator 96 is fixed on two fixed part 945a and 945b of the interior hoop projection of motor shell 94 with the outer ring surface of part (near the position at two axial ends place) contact, simultaneously also surrounding rotor 95,97 of rotating shafts place is fixed in rotor 95 and can unitary rotation.Respectively there are a coil- end 98a and 98b to extend in stator 96 both end sides, at this, coil-end 98a and space, 98b place are called to the 941a of coil chamber and 941b.Between rotor 95 and stator 96, have a gap 951.
In addition, between two fixed part 945a and 945b, define an air chamber 942.This air chamber 942 also position among the outer ring surface of stator 96 between between part and motor shell 94 inner faces, there is predetermined altitude and axial length, and air chamber 942 be hoop sealing round stator 96.
Therefore air chamber 942 is blockaded at be axially the fixed 945a of portion and 945b, does not directly communicate with 941b with the 941a of coil chamber.Stator 96 is to be made up of a plurality of stator sections 961 and 962, is to be separated and defined by a circular groove groove 963 between stator section 961 and 962.
Prior art cold medium compressor has a cooling way for motors designs, that is offer a refrigerant entrance 943 and two refrigerant exit 944a and 944b at motor shell 94 bottom diverse locations, in figure, show that refrigerant entrance 943 is to be positioned under air chamber 942, two 944 of refrigerant exits are opened in respectively two lateral coil chamber 941a and 941b.When refrigerant is introduced into motor shell 94 from refrigerant entrance 943, its flow path is described as follows.
First when liquid refrigerants, in the time that entrance 943 enters the air chamber 942 of motor shell 94, part liquid refrigerants can be because of the large atomizating phenomenon that produce of area change suddenly less.In addition, because of opening direction therefore, the liquid refrigerants of major part can directly be full of towards circular groove groove 963 is mobile and whole, now one of cooling corresponding circular groove groove 963 sidewalls partial stator 96 only; In the time that liquid refrigerants flow to circular groove groove 963 with 951 confluce, gap, just shunt along two side clearances 951 simultaneously, now can be cooled to the region of rotor 95 outsides and stator 96 inner sides; Then refrigerant flows out to two coil chamber 941a and 941b from gap 951, mainly carries out cooling to line two circle end 98a and 98b.The discharge of refrigerant is just discharged by refrigerant exit 944a and 944b certainly.
So, be necessary said structure to improve.
Summary of the invention
The technical issues that need to address of the present invention have been to provide a kind of cooling structure of 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; Described motor shell includes two coil chamber, a refrigerant entrance and a refrigerant exit, and this two coil chamber lays respectively at two sides, and this refrigerant entrance is to provide to be communicated with inner in surface with this refrigerant exit; One power unit; Described power unit is placed in this motor shell inside; Described power unit includes a stator, a rotor, a rotating shaft and two coil end; This track ring is around this rotor, and this rotating shaft is passed and is fixed in this rotor and can unitary rotation, and this two coil end extends to this two coil chamber from two ends of this stator respectively; This stator includes a circular groove groove and an axial slot; This circular groove groove is cut apart this stator to define a plurality of stator sections, and this axial slot is to be arranged with ring surface outside this stator, and between this stator and this rotor, to have a gap be to be connected with this circular groove groove and this two coil chamber; One air chamber; Described air chamber is formed at outside this stator within ring surface and this motor shell between surface, and is directly communicated with this refrigerant entrance, this circular groove groove, also sees through this axial slot and is connected with this two coil chamber; An and entrance barrier rib; Described entrance barrier rib is located at this refrigerant porch, this refrigerant entrance is divided into the two sub-entrances that are connected with this air chamber, in order to guide a refrigerant to flow to this air chamber.
Compared with prior art, the invention has the beneficial effects as follows: because most of liquid refrigerants is guided the air chamber gasification of flowing through, therefore motor stator outer surface is greatly increased by the cooling cold degree of refrigerant, promoted overall cooling effect.
Accompanying drawing explanation
Fig. 1 is typical refrigeration system schematic diagram.
Fig. 2 is prior art centrifugal coolant compressor cutaway view.
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.
The inner detailed view of motor shell that Fig. 6 is.
Fig. 7 is the detailed view of refrigerant entrance.
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:
The present invention's main purpose is to provide a kind of cooling structure of compressor motor, can promote cooling effect and reduce power loss.
The present invention's compressor motor cooling structure comprises a motor shell, a power unit, an air chamber and an entrance barrier rib.Motor shell includes two coil chamber, a refrigerant entrance and a refrigerant exit.Above-mentioned two coil chamber lays respectively at two sides in motor shell, and refrigerant entrance provides and is communicated with inner in surface with refrigerant exit system.
Above-mentioned power unit is placed in motor shell inside, includes a stator, a rotor, a rotating shaft and two coil end.Track ring is around in rotor, and rotating shaft is passed and is fixed in rotor and can unitary rotation.Two coil end extends to two coil chamber from two ends of stator respectively, wherein stator also includes a circular groove groove and an axial slot, circular groove groove is cut apart stator to define a plurality of stator sections, axial slot is to be arranged with ring surface outside stator, and between stator and rotor, has a gap system and be connected with circular groove groove and two coil chamber.
Above-mentioned air chamber is to be formed at outside stator within ring surface and motor shell between surface, and is directly communicated with refrigerant entrance, circular groove groove, also sees through axial slot and is connected with two coil chamber.Entrance barrier rib is located at refrigerant porch, refrigerant entrance is divided into the two sub-entrances that are connected with air chamber, in order to guide a refrigerant to flow to air chamber.
The design of employing said structure, because most of liquid refrigerants is guided the air chamber gasification of flowing through, therefore motor stator outer surface is greatly increased by the cooling cold degree of refrigerant, has promoted overall cooling effect.
Above-mentioned refrigerant exit place can be provided with an outlet barrier rib.Above-mentioned entrance barrier rib can be perpendicular to rotating shaft setting.Above-mentioned refrigerant entrance can be positioned at motor shell top, refrigerant exit can be positioned at motor shell bottom.
Above-mentioned air chamber can be the ring-like gas chamber of a band breach, and breach is linked up two coil chamber, and refrigerant exit can be positioned at air chamber breach scope.
With reference to figure 3, to Fig. 5, cold medium compressor stereogram, Fig. 4 that Fig. 3 is a preferred embodiment of the present invention is to be the cutaway view along the A-A line of Fig. 4 from the plane graph of Fig. 3 viewpoint C observation, Fig. 5.Cold medium compressor is roughly by the compression shell 10 of coated compression assembly, formed with the motor shell 20 of coated motor sub-assembly.
In motor shell 20, be equipped with a power unit, 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 22,23 of rotating shafts be through and be fixed in rotor 22 and can unitary rotation.Coil- end 24a and 24b are the parts that stator 21 coils axially stretch out from two terminal surfaces respectively through silicon steel sheet forms, and it more extends to the position on more inclined to one side two side sides in motor shell 20, claims that this position is the 203a of coil chamber and 203b.
On motor shell 20 surfaces, provide and be communicated with one of inside and outside refrigerant entrance 201 and a refrigerant exit 202.Use state viewpoint with general facility, namely take gravity direction G as reference direction, refrigerant entrance 201 is to be located at motor shell 20 tops, and 202 of refrigerant exits are located at motor shell 20 bottoms.
Simultaneously with reference to figure 6, stator 21 is fixed on two fixed part 204a and 204b of the interior hoop projection of motor shell 20 with part outer shroud Surface Contact, and between two fixed part 204a and 204b, defines an air chamber 25 herein.Especially, in this example, because each fixed part does not surround into a unbroken loop, two ends, two ends corresponding with fixed part 204b of fixed part 204a jointly link 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, therefore air chamber 25 is the non-closed circular air chamber of a band breach 251.Breach 251 is also 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, air chamber 25, refrigerant exit 202 and refrigerant entrance 201 in figure, are clearly illustrated herein.Still be installed with separately an entrance barrier rib 26, outlet barrier rib 27 near surface location within motor shell 20 in refrigerant entrance 201, refrigerant exit 202 places, while, entrance barrier rib 26 is divided into refrigerant entrance 201 two sub-entrance 201a and the 201b that are connected with air chamber 25, and outlet barrier rib 27 is divided into two mouthfuls by refrigerant exit 202 too.Above-mentioned two barrier ribs all arrange perpendicular to rotating shaft 23.So can allow gaseous coolant also because be more uniformly distributed in the 203a of coil chamber and 203b both sides under 27 isolation of outlet barrier rib.
With reference to figure 5 and Fig. 8, Fig. 8 is the plan view of motor stator.Whole stator 21 is that the two stator section 21a and the 21b that are separated out by a circular groove groove 211 form, and certainly, in circular groove groove 211, has copper coil to pass wherein.The first-class angle of the outer ring surface of stator 21 is concaved with Shi Er road axial slot 212, makes air chamber 25 be axially communicated in two coil chamber 203a and 203b.
As prior art, between stator 21 and rotor 22, still have a gap 221, be to be communicated to two coil chamber 203a 203b.So air chamber 25 can be communicated in gap 221 by circular groove groove 211 too.
With reference to figure 8 and Fig. 9, Fig. 9 is refrigerant flow path schematic diagram in motor.Carry out when cooling when motor sees through refrigerant, its refrigerant flow path is as following.First refrigerant enters and is shunted by entrance barrier rib 26 and flow to two sub-entrance 201a and 201b (being plotted in Fig. 7) from refrigerant entrance 201, can as prior art, directly not be full of along circular groove groove 211 by most of liquid refrigerants.In this stage, one of contact the outer ring surface of partial stator 21 with air chamber 25 and can really be subject to the cooling effect of whole refrigerants.
Then, when refrigerant is after air chamber 25 gasifications are full of, one side vertically conduit 212 flows to two lateral coil chamber 203a and 203b (less in ratio), also start on the other hand to flow between stator 21 and rotor 22 along circular groove groove 211 in a large number between gap 221.In this stage, one of comprised by the cooling position of refrigerant to contact with circular groove groove 211 a part of rotor 22 and stator 21 of partial stator section 21a and 21b and contact gap 221, cooling by gaseous coolant because being now major part, in the time that motor rotor rotates, can reduce the loss of axle power, avoid liquid refrigerants shock effect.
Finally, the refrigerant flowing out from shaft orientation flowing channel 212, gap 221 enters the 203a of coil chamber and 203b cooling coil end 24a and 24b, and flows out motor shell 20 from the refrigerant exit 202 of breach 251 (being plotted in Fig. 6).
From the above, the present invention sees through entrance barrier rib 26 and guides the refrigerant entering to flow to air chamber 25 to carry out coolingly, prevent that liquid refrigerants is directly full of to circular groove groove 211.Therefore, compared to prior art, the present invention makes motor greatly increased by the cooling cold degree of refrigerant, also improves and needs technology to underuse air chamber to carry out cooling shortcoming, and avoid consuming the effect of shaft work because of liquid refrigerants impact rotors in a large number.Refrigerant entrance more can increase the cooling uniformity in the design at top, contrast with the prior art design of Fig. 2, and refrigerant exit and entrance all bottom motor, so after refrigerant enters, and are not easy to blow to the motor first half, easily cause air-flow skewness state.
Above-described embodiment is only to give an example for convenience of description, and the interest field that the present invention advocated should be as the criterion with described in claim certainly, but not only limits to above-described embodiment.
Claims (7)
1. a cooling structure for compressor motor, is characterized in that comprising: a motor shell; Described motor shell includes two coil chamber, a refrigerant entrance and a refrigerant exit, and this two coil chamber lays respectively at two sides, and this refrigerant entrance is to provide to be communicated with inner in surface with this refrigerant exit; One power unit; Described power unit is placed in this motor shell inside; Described power unit includes a stator, a rotor, a rotating shaft and two coil end; This track ring is around this rotor, and this rotating shaft is passed and is fixed in this rotor and can unitary rotation, and this two coil end extends to this two coil chamber from two ends of this stator respectively; This stator includes a circular groove groove and an axial slot; This circular groove groove is cut apart this stator to define a plurality of stator sections, and this axial slot is to be arranged with ring surface outside this stator, and between this stator and this rotor, to have a gap be to be connected with this circular groove groove and this two coil chamber; One air chamber; Described air chamber is formed at outside this stator within ring surface and this motor shell between surface, and is directly communicated with this refrigerant entrance, this circular groove groove, also sees through this axial slot and is connected with this two coil chamber; An and entrance barrier rib; Described entrance barrier rib is located at this refrigerant porch, this refrigerant entrance is divided into the two sub-entrances that are connected with this air chamber, in order to guide a refrigerant to flow to this air chamber.
2. the cooling structure of compressor motor according to claim 1, is characterized in that: also comprise that an outlet barrier rib is located at this refrigerant exit place.
3. the cooling structure of compressor motor according to claim 1, is characterized in that: this entrance barrier rib is vertical this rotating shaft setting.
4. the cooling structure of compressor motor according to claim 1, is characterized in that: this refrigerant entrance is positioned at this motor shell top.
5. the cooling structure of compressor motor according to claim 1, is characterized in that: this refrigerant exit is positioned at this motor shell bottom.
6. the cooling structure of compressor motor according to claim 1, is characterized in that: this air chamber is the ring-like gas chamber of a band breach, and this breach is linked up this two coil chamber.
7. the cooling structure of 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 |
|---|---|---|---|
| CN201210399314.4A CN103780022A (en) | 2012-10-18 | 2012-10-18 | Compressor motor cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210399314.4A CN103780022A (en) | 2012-10-18 | 2012-10-18 | Compressor motor cooling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103780022A true CN103780022A (en) | 2014-05-07 |
Family
ID=50571969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210399314.4A Pending CN103780022A (en) | 2012-10-18 | 2012-10-18 | Compressor motor cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103780022A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612220A (en) * | 2017-09-26 | 2018-01-19 | 重庆美的通用制冷设备有限公司 | Motor and there is its centrifugal compressor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070024129A1 (en) * | 2003-04-16 | 2007-02-01 | Siemens Aktiengesellschaft | Electrical machine provided with cooled metal stacks and windings of the stator rotor thereof |
| CN101630880A (en) * | 2008-07-15 | 2010-01-20 | 上海汉钟精机股份有限公司 | Motor device of cooling compressor |
| CN202918135U (en) * | 2012-10-18 | 2013-05-01 | 上海汉钟精机股份有限公司 | Cooling structure of compressor motor |
-
2012
- 2012-10-18 CN CN201210399314.4A patent/CN103780022A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070024129A1 (en) * | 2003-04-16 | 2007-02-01 | Siemens Aktiengesellschaft | Electrical machine provided with cooled metal stacks and windings of the stator rotor thereof |
| CN101630880A (en) * | 2008-07-15 | 2010-01-20 | 上海汉钟精机股份有限公司 | Motor device of cooling compressor |
| CN202918135U (en) * | 2012-10-18 | 2013-05-01 | 上海汉钟精机股份有限公司 | Cooling structure of compressor motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612220A (en) * | 2017-09-26 | 2018-01-19 | 重庆美的通用制冷设备有限公司 | Motor and there is its centrifugal compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11009043B2 (en) | Turbo compressor including intercooler | |
| US7181928B2 (en) | System and method for cooling a compressor motor | |
| US8021127B2 (en) | System and method for cooling a compressor motor | |
| CN108425862B (en) | Oil-free centrifugal compressor for use in low capacity applications | |
| CN105051467B (en) | Motor cooling system for refrigeration machine | |
| US3388559A (en) | Electric motors cooled with refrigerants | |
| US6402485B2 (en) | Compressor | |
| US2249882A (en) | Cooling apparatus for compressors | |
| CN107407269B (en) | Driven compressor motor and its cooling means and refrigerant circuit | |
| RU2614551C1 (en) | Casing for scroll compressor fan | |
| JP5984665B2 (en) | Compressor and turbo refrigerator | |
| CN101630880A (en) | Motor device of cooling compressor | |
| CN202918135U (en) | Cooling structure of compressor motor | |
| EP2980409A1 (en) | Scroll-type fluid machine | |
| US9134049B2 (en) | Energy recovery apparatus for a refrigeration system | |
| CN101900114B (en) | Compressor | |
| CN101346548A (en) | Compressor | |
| CN103518106A (en) | Condensing device | |
| CN103780022A (en) | Compressor motor cooling structure | |
| CN105392996B (en) | Screw compressor | |
| KR102018260B1 (en) | A cooling structure of motor in a electric compressor | |
| CN101334036B (en) | Semi-closed screw type refrigerating compressor air guide sleeve | |
| CN201238239Y (en) | Refrigeration structure of compressor motor | |
| JP2018035800A (en) | Hermetic electric compressor and refrigeration machine | |
| EP2153145B1 (en) | Ventilating device and the refrigerator having the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140507 |