CN102678572A - Air conditioner and air conditioner low back pressure type compressor for pre-cooling motor - Google Patents
Air conditioner and air conditioner low back pressure type compressor for pre-cooling motor Download PDFInfo
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- CN102678572A CN102678572A CN2011100630515A CN201110063051A CN102678572A CN 102678572 A CN102678572 A CN 102678572A CN 2011100630515 A CN2011100630515 A CN 2011100630515A CN 201110063051 A CN201110063051 A CN 201110063051A CN 102678572 A CN102678572 A CN 102678572A
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Abstract
The invention provides an air conditioner and air conditioner low back pressure type compressor for pre-cooling a motor. The low back pressure type compressor comprises a compressor body; a motor, a cylinder, a lower flange, an exhaust assembly, a liquid dispenser and a cooling device; wherein the motor, the cylinder and the lower flange are arranged in the compressor body, the exhaust assembly is arranged at the lower side of the compressor body, the liquid dispenser is connected with the compressor body, and the start end of the cooling device is communicated with a cavity for containing the motor, and the terminal of the cooling device is connected with an air suction pipe of the liquid dispenser; the upper end of the compressor is provided with an upper cover air suction pipe. The conditioner low back pressure type can perform pre-cooling on the motor, carries out three heat exchanges on the refrigerant gas, so that the temperature of the motor is reduced, and the reliability of the compressor and the air conditioner are improved.
Description
Technical field
The present invention relates to compressor field, refer in particular to the low back pressure compressor of a kind of air-conditioning and motor precooling thereof.
Background technique
Existing high back pressure rotor-type compressor, for the application of new cooling media or high pressure ratio high load, delivery temperature is high; Cause electric machine temperature rise too high; Not only compressor efficiency and reliability reduce, and are prone to the phenomenon of burn-down of electric motor, make the reliability of compressor unit and air conditioner be difficult to guarantee.
Summary of the invention
The present invention provides the low back pressure compressor of a kind of air-conditioning and motor precooling thereof, and it can carry out precooling to motor, and cold media air is carried out three heat exchanges, reduces motor temperature, improves compressor, and the reliability of air-conditioning.
The present invention is achieved in that
A kind of low back pressure compressor of motor precooling, it includes: compressor body, be located at motor, cylinder and lower flange in the compressor body; Be located at the discharge means of compressor body downside; The liquor separator that is connected with said compressor body, and cooling unit, the top of said cooling unit communicates with the cavity of accommodating said motor; Its terminal is connected with the sucking pipe of said liquor separator, and the upper end of said compressor is provided with the loam cake sucking pipe.
Preferably, it is single stage compressor or compound compressor.
Preferably; Performance in order to ensure low back pressure compressor; The length of the Oil Guide sheet of said compressor body inner pump extends to bent axle major axis pump oilhole place, makes fully to form lubricant film between the pump housing fitting surface in the said compressor body, reaches better lubricated and sealing effect.
The present invention also provides a kind of low back pressure compressor of motor precooling, and cold media air divides two tributaries to get into compressor body respectively, and wherein the first tributary cold media air gets into from the loam cake sucking pipe; In accommodating the cavity of motor, accomplish heat exchange for the first time, afterwards, get into cooling unit again; Accomplish heat exchange for the second time; The cold media air of accomplishing heat exchange for the second time mixed with the second tributary cold media air before getting into liquor separator, accomplished heat exchange for the third time, got into compressor body afterwards.
Preferably; For can be on basis to the cooling of said motor; And in normal inhalation temperature scope, the cold media air flow in said first tributary accounts for 1/10 to 1/5 of total cold media air flow to the cold media air that guarantees two tributaries in the temperature of mixed total cold media air flow.
The present invention more provides a kind of air-conditioning; It includes condenser; Expansion valve, vaporizer, it also comprises the low back pressure compressor like above each described motor precooling; The sucking pipe of the liquor separator of said low back pressure compressor, all be connected with the relief opening of said vaporizer with the loam cake sucking pipe of said compressor, the relief opening of said cooling unit is connected with the sucking pipe of said liquor separator.
Preferably, it also includes flow control valve, and its intakeport is connected with the relief opening of vaporizer, and its relief opening is connected with said loam cake sucking pipe, is used to control the flow of the cold media air that gets into said loam cake sucking pipe.
Preferably; In order to reduce the oil content of air-conditioning system; Guarantee low back pressure compressor and air-conditioning performance its also include oil separator, said oil separator respectively with the discharge means of said low back pressure compressor, condenser intakeport, and the liquor separator intakeport be connected.
The present invention compared with prior art has following beneficial effect:
The low back pressure compressor of air-conditioning of the present invention and motor precooling thereof; It changes the flow direction of cold media air, and cold media air gets in the low back pressure compressor at twice, and cold media air is through repeatedly heat exchange; Reduce the temperature of motor, improved the reliability of low back pressure compressor.
Description of drawings
Fig. 1 is the structural representation of the low back pressure compressor of motor precooling of the present invention;
Fig. 2 is the circulation process figure of air-conditioning of the present invention.
The title that each label is corresponding in the accompanying drawing is respectively:
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated:
Like Fig. 1 and shown in Figure 2, air-conditioning of the present invention, it includes condenser 1, expansion valve 2, vaporizer 3, low back pressure compressor 4.Wherein, Said low back pressure compressor 4 includes: compressor body 41, be located at motor 42, cylinder 43 and lower flange 44 in the compressor body 41; Be located at the discharge means 45 of compressor body 41 downsides,, be located at the loam cake sucking pipe 47 of said compressor body 41 upper ends with the liquor separator 46 that said compressor body 41 is connected; And cooling unit 5; The top of said cooling unit 5 communicates with the cavity of accommodating said motor 42 through connecting tracheae assembly 7, and the terminal of said cooling unit 5 is connected with the sucking pipe of said liquor separator 46; Said loam cake sucking pipe 47, and the sucking pipe of said liquor separator 46 all be connected with the relief opening of said vaporizer 3; The relief opening of said cooling unit 5 is connected with the sucking pipe of said liquor separator 46, and the discharge means 45 of said low back pressure compressor 4 is connected with the intakeport of said oil separator 48, and the oil drain out of said oil separator 48 is connected with the intakeport of said liquor separator 46; Said oil separator 48 also connects condenser 1, expansion valve 2 successively, reaches vaporizer 3, forms air-conditioning circulation loops (as shown in Figure 2) with said low back pressure compressor 4.
Continue as shown in Figure 2; Said air-conditioning also includes flow control valve 6; The intakeport of said quantity control valve 6 is connected with the relief opening of said vaporizer 3, and the relief opening of said flow control valve 6 is connected with said loam cake sucking pipe 47, is used to control the flow of the cold media air that gets into said loam cake sucking pipe 47; In the invention preferred embodiment, the cold media air flow that gets into said loam cake sucking pipe 47 accounts for 1/10 to 1/5 of total cold media air flow.
Air-conditioning is when work; Cold media air from the relief opening of vaporizer 3 flows out is divided into two tributaries and gets into said compressor body 41 respectively, and said flow control valve 6 controls account for 1/10 to 1/5 of total cold media air flow from the flow that said loam cake sucking pipe 47 gets into the first tributary cold media air of said compressor body 41; The first tributary cold media air fully absorbs the heat of motor 42; Make itself temperature higher, accomplish heat exchange for the first time, afterwards; The first tributary cold media air gets into said cooling unit 5 flowing out from connecting tracheae assembly 7;
In cooling unit 5, the first higher tributary cold media air of temperature carries out the heat exchange second time fully, and great amount of heat is exchanged to the external world, guarantees that the first tributary cold media air is enough low with temperature before the second tributary cold media air mixes;
Afterwards; The first tributary cold media air gets into the sucking pipe of said liquor separator 46 through cooling unit 5 relief openings; And the said first tributary cold media air, the said second tributary cold media air mixed before getting into said liquor separator 46, and carried out heat exchange for the third time, with the cold media air temperature that realizes total discharge in normal inhalation temperature scope; Guarantee the performance of low back pressure compressor, and the reliability of air-conditioning;
Mixed cold media air compresses through the cylinder 43 that liquor separator 46 gets into said compressor body 41, and the cold media air after the compression is discharged through lower flange 44 and exhaust pipe assembly 45, gets into the circulatory system of air-conditioning.
Preferably, said low back pressure compressor 41 is single stage compressor or compound compressor.When said low back pressure compressor 41 was compound compressor, the cold media air of accomplishing heat exchange for the third time got into low-pressure cylinder from connecting tracheae assembly 7.
Performance in order to ensure low back pressure compressor; The length of the Oil Guide sheet 8 of said compressor body 41 inner pumps extends to bent axle major axis pump oilhole 12 places; Make fully to form lubricant film between the pump housing fitting surface in the said compressor body, reach better lubricated and sealing effect.
More than be merely specific embodiment of the present invention, do not limit protection scope of the present invention with this; Any replacement and the improvement on the basis of not violating the present invention's design, done all belong to protection scope of the present invention.
Claims (9)
1. the low back pressure compressor of a motor precooling, it includes: compressor body, be located at motor, cylinder and lower flange in the compressor body; Be located at the discharge means of compressor body downside, the liquor separator that is connected with said compressor body, and cooling unit; The top of said cooling unit communicates with the cavity of accommodating said motor; Its terminal is connected with the sucking pipe of said liquor separator, it is characterized in that, the upper end of said compressor is provided with the loam cake sucking pipe.
2. the low back pressure compressor of motor precooling as claimed in claim 1 is characterized in that it is single stage compressor or compound compressor.
3. the low back pressure compressor of motor precooling as claimed in claim 1 is characterized in that, the length of the Oil Guide sheet of said compressor body inner pump extends to bent axle major axis pump oilhole place.。
4. the low back pressure compressor of a motor precooling is characterized in that, cold media air divides two tributaries to get into compressor body respectively; Wherein the first tributary cold media air gets into from the loam cake sucking pipe, in accommodating the cavity of motor, accomplishes heat exchange for the first time, afterwards; Get into cooling unit again, accomplish heat exchange for the second time, the cold media air of accomplishing heat exchange for the second time mixed with the second tributary cold media air before getting into liquor separator; Accomplish heat exchange for the third time, get into compressor body afterwards.
5. the low back pressure compressor of motor precooling as claimed in claim 4 is characterized in that the cold media air flow in said first tributary accounts for 1/10 to 1/5 of total cold media air flow.
6. the low back pressure compressor of motor precooling as claimed in claim 4 is characterized in that it is single stage compressor or compound compressor.
7. air-conditioning; It includes condenser, expansion valve, vaporizer; It is characterized in that; It also comprises the low back pressure compressor like each described motor precooling of claim 1 to 6, the sucking pipe of the liquor separator of said low back pressure compressor, all is connected with the relief opening of said vaporizer with the loam cake sucking pipe of said compressor, and the relief opening of said cooling unit is connected with the sucking pipe of said liquor separator.
8. air-conditioning as claimed in claim 7; It is characterized in that it also includes flow control valve, its intakeport is connected with the relief opening of said vaporizer; Its relief opening is connected with said loam cake sucking pipe, is used to control the flow of the cold media air that gets into said loam cake sucking pipe.
9. air-conditioning as claimed in claim 7 is characterized in that it also includes oil separator, said oil separator respectively with the discharge means of said low back pressure compressor, condenser intakeport, and the liquor separator intakeport be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110063051.5A CN102678572B (en) | 2011-03-16 | 2011-03-16 | Air conditioner and air conditioner low back pressure type compressor for pre-cooling motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110063051.5A CN102678572B (en) | 2011-03-16 | 2011-03-16 | Air conditioner and air conditioner low back pressure type compressor for pre-cooling motor |
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| Publication Number | Publication Date |
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| CN102678572A true CN102678572A (en) | 2012-09-19 |
| CN102678572B CN102678572B (en) | 2015-02-18 |
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| CN201110063051.5A Active CN102678572B (en) | 2011-03-16 | 2011-03-16 | Air conditioner and air conditioner low back pressure type compressor for pre-cooling motor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557646A (en) * | 2013-09-30 | 2014-02-05 | 广东美芝制冷设备有限公司 | Refrigerating system and heating system |
| CN103912494A (en) * | 2014-04-22 | 2014-07-09 | 广东美芝制冷设备有限公司 | Low-pressure-cavity rotary compressor component |
| WO2015042970A1 (en) * | 2013-09-30 | 2015-04-02 | 广东美芝制冷设备有限公司 | Cooling system and heating system |
| CN105402135A (en) * | 2014-08-18 | 2016-03-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotary compressor |
| CN110345072A (en) * | 2019-06-19 | 2019-10-18 | 珠海凌达压缩机有限公司 | Compressor and air conditioner |
| CN111022318A (en) * | 2019-12-20 | 2020-04-17 | 珠海格力节能环保制冷技术研究中心有限公司 | Semi-closed aluminum scroll compressor for vehicle |
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| CN201588788U (en) * | 2009-12-28 | 2010-09-22 | 上海日立电器有限公司 | Exhaust passage structure for intermediate backpressure two-stage rotor compressor |
| CN201991782U (en) * | 2011-03-16 | 2011-09-28 | 珠海格力电器股份有限公司 | Air conditioner and motor precooling low back pressure compressor thereof |
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2011
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| JPH05256285A (en) * | 1992-03-13 | 1993-10-05 | Toshiba Corp | Two-state compressing compressor for superlow temperature refrigerator |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557646A (en) * | 2013-09-30 | 2014-02-05 | 广东美芝制冷设备有限公司 | Refrigerating system and heating system |
| WO2015042970A1 (en) * | 2013-09-30 | 2015-04-02 | 广东美芝制冷设备有限公司 | Cooling system and heating system |
| CN103557646B (en) * | 2013-09-30 | 2015-11-18 | 广东美芝制冷设备有限公司 | Refrigeration system and heating |
| EP2977691A4 (en) * | 2013-09-30 | 2016-06-08 | Guangdong Meizhi Compressor Co Ltd | Cooling system and heating system |
| CN103912494A (en) * | 2014-04-22 | 2014-07-09 | 广东美芝制冷设备有限公司 | Low-pressure-cavity rotary compressor component |
| CN103912494B (en) * | 2014-04-22 | 2016-08-31 | 广东美芝制冷设备有限公司 | Low pressure chamber rotary compression thermomechanical components |
| CN105402135A (en) * | 2014-08-18 | 2016-03-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotary compressor |
| CN110345072A (en) * | 2019-06-19 | 2019-10-18 | 珠海凌达压缩机有限公司 | Compressor and air conditioner |
| CN111022318A (en) * | 2019-12-20 | 2020-04-17 | 珠海格力节能环保制冷技术研究中心有限公司 | Semi-closed aluminum scroll compressor for vehicle |
| CN111022318B (en) * | 2019-12-20 | 2021-09-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Semi-closed aluminum scroll compressor for vehicle |
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| CN102678572B (en) | 2015-02-18 |
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