CN102678572B - 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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- CN102678572B CN102678572B CN201110063051.5A CN201110063051A CN102678572B CN 102678572 B CN102678572 B CN 102678572B CN 201110063051 A CN201110063051 A CN 201110063051A CN 102678572 B CN102678572 B CN 102678572B
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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 easily occur the phenomenon of burn-down of electric motor, make the reliability of compressor unit and air conditioner be difficult to ensure.
Summary of the invention
The invention provides the low back pressure compressor of a kind of air-conditioning and motor precooling thereof, it can carry out precooling to motor, carries out three heat exchanges to cold media air, reduces motor temperature, improves the reliability of compressor and air-conditioning.
The present invention is achieved in that
The invention provides a kind of low back pressure compressor of motor precooling, cold media air divides two tributaries to enter compressor body respectively, wherein the first tributary cold media air enters from upper cover sucking pipe, in the cavity of collecting motor, complete first time heat exchange, afterwards, then enter cooling unit, complete second time heat exchange, the cold media air completing second time heat exchange mixed with the second tributary cold media air before entering liquor separator, completed third time heat exchange, entered compressor body afterwards.
Preferably, in order to can on the basis to described electric motor temperature reduction, and ensureing that the temperature of cold media air total cold media air flow upon mixing in two tributaries is within the scope of normal inhalation temperature, the cold media air flow in described first tributary accounts for 1/10 to 1/5 of 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 of the motor precooling as described in above any one, the sucking pipe of the liquor separator of described low back pressure compressor, be all connected with the relief opening of described vaporizer with the upper cover sucking pipe of described compressor, the relief opening of described cooling unit is connected with the sucking pipe of described 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 described upper cover sucking pipe, for controlling the flow of the cold media air entering described upper cover sucking pipe.
Preferably, in order to reduce the oil content of air-conditioning system, ensure low back pressure compressor and air-conditioning performance its also include oil separator, described oil separator is connected with the discharge means of described low back pressure compressor, condenser intakeport and liquor separator intakeport respectively.
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 enters in low back pressure compressor at twice, and cold media air is through heat exchange repeatedly, reduce the temperature of motor, improve the reliability of low back pressure compressor.
Accompanying drawing explanation
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 in accompanying drawing, each label is corresponding is respectively:
Condenser 1, expansion valve 2, vaporizer 3, low back pressure compressor 4, compressor body 41, motor 42, cylinder 43, lower flange 44, discharge means 45, liquor separator 46, upper cover sucking pipe 47, oil separator 48, and cooling unit 5, flow control valve 6, connects tracheae assembly 7, oil guide piece 8, pump oilhole 12.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail:
As shown in Figures 1 and 2, air-conditioning of the present invention, it includes condenser 1, expansion valve 2, vaporizer 3, low back pressure compressor 4.Wherein, described low back pressure compressor 4 includes: compressor body 41, be located at the motor 42 in compressor body 41, cylinder 43 and lower flange 44, be located at the discharge means 45 on the downside of compressor body 41, the liquor separator 46 be connected with described compressor body 41, be located at the upper cover sucking pipe 47 of described compressor body 41 upper end, and cooling unit 5, the top of described cooling unit 5 is by connecting tracheae assembly 7, communicate with the cavity of the described motor 42 of collecting, the terminal of described cooling unit 5 is connected with the sucking pipe of described liquor separator 46, described upper cover sucking pipe 47, and the sucking pipe of described liquor separator 46 is all connected with the relief opening of described vaporizer 3, the relief opening of described cooling unit 5 is connected with the sucking pipe of described liquor separator 46, the discharge means 45 of described low back pressure compressor 4 is connected with the intakeport of described oil separator 48, the oil drain out of described oil separator 48 is connected with the intakeport of described liquor separator 46, described oil separator 48 also connects condenser 1 successively, expansion valve 2, and vaporizer 3, Air-conditioning Cycle loop (as shown in Figure 2) is formed with described low back pressure compressor 4.
Continue as shown in Figure 2, described air-conditioning also includes flow control valve 6, the intakeport of described quantity control valve 6 is connected with the relief opening 3 of described vaporizer, the relief opening of described flow control valve 6 is connected with described upper cover sucking pipe 47, for controlling the flow of the cold media air entering described upper cover sucking pipe 47, in invention preferred embodiment, the cold media air flow entering described upper cover sucking pipe 47 accounts for 1/10 to 1/5 of total cold media air flow.
Air-conditioning operationally, from the cold media air that the relief opening of vaporizer 3 flows out, be divided into two tributaries and enter described compressor body 41 respectively, the flow that described flow control valve 6 controls to enter from described upper cover sucking pipe 47 first tributary cold media air of described compressor body 41 accounts for 1/10 to 1/5 of total cold media air flow, first tributary cold media air fully absorbs the heat of motor 42, make itself temperature higher, complete first time heat exchange, afterwards, first tributary cold media air, flowing out from connection tracheae assembly 7, enters described cooling unit 5;
In cooling unit 5, the first tributary cold media air that temperature is higher carries out second time heat exchange fully, a large amount of exchange heat is given extraneous, guarantees that the temperature of the first tributary cold media air before mixing with the second tributary cold media air is enough low;
Afterwards, first tributary cold media air enters the sucking pipe of described liquor separator 46 by cooling unit 5 relief opening, and described first tributary cold media air, described second tributary cold media air are at the forward slip value entering described liquor separator 46, and carry out third time heat exchange, to realize the cold media air temperature of total discharge within the scope of normal inhalation temperature, guarantee the performance of low back pressure compressor, and the reliability of air-conditioning;
The cylinder 43 that mixed cold media air enters described compressor body 41 by liquor separator 46 compresses, and the cold media air after compression is discharged through lower flange 44 and exhaust pipe assembly 45, enters the circulatory system of air-conditioning.
Preferably, described low back pressure compressor 41 is single stage compressor or compound compressor.When described low back pressure compressor 41 is compound compressor, the cold media air completing third time heat exchange enters low-pressure cylinder from connection tracheae assembly 7.
In order to ensure the performance of low back pressure compressor, the length of the oil guide piece 8 of described compressor body 41 inner pump extends to bent axle long-shaft pump oilhole 12 place, make fully to form lubricant film between the pump housing fitting surface in described compressor body, reach better lubrication and sealing effect.
These are only specific embodiments of the invention, do not limit protection scope of the present invention with this; Not violating any replacement and improvement that the basis of the present invention's design is done, all belong to protection scope of the present invention.
Claims (6)
1. the low back pressure compressor of a motor precooling, it is characterized in that, cold media air divides two tributaries to enter compressor body respectively, and wherein the first tributary cold media air enters from upper cover sucking pipe, completes first time heat exchange in the cavity of collecting motor, afterwards, enter cooling unit again, complete second time heat exchange, the cold media air completing second time heat exchange mixed with the second tributary cold media air before entering liquor separator, complete third time heat exchange, enter compressor body afterwards.
2. the low back pressure compressor of motor precooling as claimed in claim 1, it is characterized in that, the cold media air flow in described first tributary accounts for 1/10 to 1/5 of total cold media air flow.
3. the low back pressure compressor of motor precooling as claimed in claim 1, it is characterized in that, it is single stage compressor or compound compressor.
4. an air-conditioning, it includes condenser, expansion valve, vaporizer, it is characterized in that, it also comprises the low back pressure compressor of the motor precooling as described in any one of claims 1 to 3, the sucking pipe of the liquor separator of described low back pressure compressor, is all connected with the relief opening of described vaporizer with the upper cover sucking pipe of described compressor, and the relief opening of described cooling unit is connected with the sucking pipe of described liquor separator.
5. air-conditioning as claimed in claim 4, it is characterized in that, it also includes flow control valve, the intakeport of described flow control valve is connected with the relief opening of described vaporizer, the relief opening of described flow control valve is connected with described upper cover sucking pipe, for controlling the flow of the cold media air entering described upper cover sucking pipe.
6. air-conditioning as claimed in claim 4, it is characterized in that, it also includes oil separator, and described oil separator is connected with the discharge means of described low back pressure compressor, condenser intakeport and liquor separator intakeport respectively.
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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN102678572A CN102678572A (en) | 2012-09-19 |
| CN102678572B true CN102678572B (en) | 2015-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557646B (en) * | 2013-09-30 | 2015-11-18 | 广东美芝制冷设备有限公司 | Refrigeration system and heating |
| 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 |
| 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 |
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1420964A (en) * | 2000-03-30 | 2003-05-28 | 三洋电机株式会社 | Multi-stage compressor |
| 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 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05256285A (en) * | 1992-03-13 | 1993-10-05 | Toshiba Corp | Two-state compressing compressor for superlow temperature refrigerator |
| JPH0633886A (en) * | 1992-07-10 | 1994-02-08 | Toshiba Corp | Two-stage compression compressor for very low temperature refrigerator |
| JPH08247060A (en) * | 1995-03-15 | 1996-09-24 | Toshiba Corp | Rotary compressor |
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2011
- 2011-03-16 CN CN201110063051.5A patent/CN102678572B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1420964A (en) * | 2000-03-30 | 2003-05-28 | 三洋电机株式会社 | Multi-stage compressor |
| 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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| CN102678572A (en) | 2012-09-19 |
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