CN104806523B - Two-stage rotary type compressor and operating method thereof - Google Patents
Two-stage rotary type compressor and operating method thereof Download PDFInfo
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- CN104806523B CN104806523B CN201510206375.8A CN201510206375A CN104806523B CN 104806523 B CN104806523 B CN 104806523B CN 201510206375 A CN201510206375 A CN 201510206375A CN 104806523 B CN104806523 B CN 104806523B
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Abstract
The invention discloses a two-stage rotary type compressor and an operating method thereof. The compressor comprises a casing, a motor, a pump body, a low-pressure air inlet pipe, a medium-pressure exhaust pipe, a liquid injection pipe, a high-pressure exhaust pipe and a bracket, wherein the motor and the pump body are arranged inside the casing; the low-pressure air inlet pipe, the medium-pressure exhaust pipe, the liquid injection pipe, the high-pressure exhaust pipe and the bracket are distributed on the casing; the pump body consists of a crank shaft, a primary compression part, a secondary compression part and a middle partition plate. The operating method of the compressor comprises the following steps: low-pressure refrigerant gas passes through the primary compression part to be compressed to be medium pressure and is exhausted into the casing, one part of the gas absorbs heat of the motor and then is exhausted from the medium-pressure exhaust pipe, and the other part of the gas is mixed with a refrigerant liquid injected through the liquid injection pipe to enter the secondary compression part to be compressed to be high pressure and then is exhausted from the high-pressure exhaust pipe. According to the invention, the phenomenon that the motor is burnt down due to superheat is avoided, and heat of the motor is effectively utilized to heat water; a middle liquid injection technology is adopted, and the secondary air inlet superheat degree is reduced, so that the compressor exhaust temperature is effectively reduced.
Description
Technical field
The invention belongs to Compressor Technology field is and in particular to a kind of 2 stage rotary compressor and its method of work.
Background technology
Compressor, as the heart of whole air-source water heater blood circulation, is compressed to refrigerant vapour from low-pressure state
High pressure conditions, provide power for circulation, so that kind of refrigeration cycle is carried out again and again.Ensure compressor reliability service be to
Close important.Compared with traditional compressor, freon class Teat pump boiler compressor because its condensation temperature is high,
The reasons such as long operational time, its operating condition is more severe, and the reliability and stability of compressor is more difficult to ensure.
Due to the above-mentioned water heater special work condition state of compressor, will appear from a series of problem, reduce compressor
Reliability.First, the high pressure ratio of cold-producing medium will make compressor exhaust temperature raise, thus reducing the lubricant effect of lubricating oil
Deng；Second, the heat of motor is more difficult to shed so that electrode easily burns.3rd, the pump housing is increased by power load it is easy to wear and tear.
Content of the invention
In order to solve the problems, such as above-mentioned prior art, the present invention provides a kind of 2 stage rotary compressor and its work
Method, using middle back pressure in housing, the middle temperature cold-producing medium that one stage of compression is discharged effectively cools down motor；Refrigeration after cooling motor
Agent is directly used in heating water at low temperature, it is to avoid during two-stage compression, cold-producing medium is unnecessary overheated, is effectively utilized motor again
Heat water；Using hydrojet technology, reduce the secondary inlet degree of superheat, thus effectively reducing compressor exhaust temperature.
In order to achieve the above object, the present invention adopts the following technical scheme that
A kind of 2 stage rotary compressor, described 2 stage rotary compressor 10 include by lower cover 11a, cylinder 11b and on
Housing 11, the motor 12 being arranged in housing 11 and the pump housing 13 being driven by this motor 12 of lid 11c composition；Described upper lid
11c is provided with the seal socket assembly 14 and middle pressure trachea 15 to motor 12 power supply, and cylinder 11b is provided with middle pressure hydrojet
Pipe 16；Described motor 12 includes being installed on stator 17 and the rotor 18 being placed in this stator 17 inner side on cylinder 11b；The described pump housing
13 include fixing on a rotor 18 and be extends in the vertical direction bent axle 19, first order compression unit 20, second level compression unit 21 with
And it is clamped in the central dividing plate 22 between first order compression unit 20 and second level compression unit 21；Described first order compression unit 20 includes
It is arranged on the upper cylinder body 23 on central dividing plate 22 top, the upper piston 25 being arranged in upper cylinder body 23 and being enclosed within outside bent axle 19, will be upper
It is divided into upper cylinder body low pressure chamber 23a and the upper slide plate 27 of upper cylinder body high pressure chest 23b, by the end face closing of upper cylinder body 23 in cylinder body 23
Get up and also serve as the upper bearing (metal) 29 of bent axle 19 bearing；Described second level compression unit 21 includes being arranged under central dividing plate 22 bottom
Cylinder body 24, the lower piston 26 being arranged in lower cylinder body 24 and being enclosed within outside bent axle 19, it is divided into lower cylinder body low pressure by lower cylinder body 24
Chamber 24a and the lower slide plate 28 of lower cylinder body high pressure chest 24b, the end face of lower cylinder body 24 are closed and also serve as under bent axle 19 bearing
Bearing 30；Described upper slide plate 27 and lower slide plate 28 are able to upper on the cylinder wall being arranged at upper cylinder body 23 and lower cylinder body 24
Move back and forth in cylinder body vane slot 43 and lower cylinder body vane slot 44, and make by upper cylinder body spring 45 and lower cylinder body spring 46 respectively
It is always contacted with upper piston 25 and lower piston 26；Described central dividing plate 22 is provided with makes bent axle 19 and intermediate-pressure gas pass through
Interstitial hole 22a and side hole 22b；Exhaust silencer 31 formed with upper bearing (metal) 29 in pressure gas dead room 32, lower ball cover 33 with
Lower bearing 30 forms high pressure gas dead room 34, low pressure air suction mouth 35 along upper cylinder body 23 radially, and by low pressure air suction pipe 36 with
Reservoir 37 is connected, and high pressure air suction way 38 is from top to bottom by upper bearing (metal) 29, upper cylinder body 23 and central dividing plate 22 vertically
Perforate composition, high pressure air entry 39 is connected along lower cylinder body 24 radial direction with high pressure air suction way 38, middle pressure pore 40 and high pressure
Steam vent 41 is respectively on upper cylinder body 23 and lower cylinder body 24, and high pressure gas dead room 34 is connected with high-pressure exhaust pipe 42, high pressure
Gas in exhausting silencer room 34 is discharged by high-pressure exhaust pipe 42；Described bent axle 19 is provided with the oilhole along center vertical line direction
48 and communicate with oilhole 48 and multiple feed bore transversely.
Described upper bearing (metal) 29, upper cylinder body 23, central dividing plate 22, lower cylinder body 24 and lower bearing 30 configure from top to bottom successively
On bent axle 19, and integrally it is connected with exhaust silencer 31 and lower ball cover 33 by multiple installation bolts 47.
Installing in the outer base of described housing 11 is to have support 49.
The method of work of 2 stage rotary compressor described above, first, makes motor 12 be energized and starts, rotor driven 18
Rotation, the rotation rotarily driving bent axle 19 of rotor 18, bent axle 19 rotarily drive upper piston 25 and lower piston 26 respectively upper
Eccentric rotary in cylinder body 23 and lower cylinder body 24；Low pressure refrigerant gas are via reservoir 37, low pressure air suction pipe 36, upper cylinder body 23
Low pressure air suction mouth 35 is drawn into upper cylinder body low pressure chamber 23a, and passes through the rotary motion of upper piston 25 and the reciprocal of upper slide plate 27
Low pressure refrigerant gas are carried out the first order and are compressed to intermediate pressure by motion, then from the upper cylinder body high pressure chest 23b of upper cylinder body 23,
Drain in the housing 11 of compressor via middle pressure pore 40, middle pressure gas dead room 32 and exhaust silencer 31；Then, from upper
A refrigerant superheat gas part for what cylinder body 23 was discharged be in intermediate pressure absorbs therefrom pressure trachea after motor 12 heat
15 water discharging low-temperature zone in heat hot water device；Another part gas and the middle liquid mixing cooling pressed and spray in sparge pipe 16
Superheated vapor afterwards, via high pressure air suction way 38, and in central dividing plate 22, refrigerant gas along side hole 22b circumferential flow,
The high pressure air entry 39 then entering lower cylinder body 24 is drawn in lower cylinder body low pressure chamber 24a of lower cylinder body 24, and passes through lower piston
Medium pressure gas are carried out the second level and are compressed to high pressure, then from lower cylinder body by the reciprocating motion of 26 rotary motion and lower slide plate 28
24 lower cylinder body high pressure chest 24b, drains into compressor via high pressure gas hole 41, high pressure gas dead room 34 and high-pressure exhaust pipe 42
The water of heat hot water device high temperature section is removed outside housing；Meanwhile, by the rotation of bent axle 19, it is in the lubricating oil of housing 11 bottom,
Oilhole 48 via the vertical direction at bent axle 19 center rises, and is flowed out by the horizontal oilhole being located at midway, is supplied to bent axle 19
Bearing and respectively compression intracavity, make each moving component of compressor obtain effectively lubricating.
Compared to the prior art relatively, the present invention possesses following advantage:
1st, part intermediate-pressure gas are discharged by middle pressure trachea after crossing motor, and this gas temperature will not be too high, can be effective
Reduce motor temperature, it is to avoid motor temperature is too high to be caused to burn,
2. go to add the low-temperature zone of water heater by the refrigerant gas absorbing motor heat that middle pressure trachea is discharged
Water, is effectively utilized the heat of motor, improves efficiency of energy utilization.
3. using middle hydrojet technology, reduce the secondary inlet degree of superheat, thus effectively reducing compressor exhaust temperature.
Brief description
Fig. 1 is 2 stage rotary compressor structural representation of the present invention.
Fig. 2 is the 2 stage rotary compressor a a generalized section of Fig. 1.
Fig. 3 is the 2 stage rotary compressor b b generalized section of Fig. 1.
Fig. 4 is the 2 stage rotary compressor c c generalized section of Fig. 1.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description:
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of 2 stage rotary compressor of the present invention, described 2 stage rotary compression
Machine 10 includes the housing 11 being made up of lower cover 11a, cylinder 11b and upper lid 11c, is arranged on motor 12 in housing 11 and by this
The pump housing 13 that motor 12 drives；Described upper lid 11c is provided with seal socket assembly 14 and middle pressure to motor 12 power supply
Exhaustor 15, cylinder 11b is provided with middle pressure sparge pipe 16；Described motor 12 includes being installed on cylinder 11b stator 17 and puts
Rotor 18 in this stator 17 inner side；The described pump housing 13 include fixing on a rotor 18 and be extends in the vertical direction bent axle 19,
First order compression unit 20, second level compression unit 21 and be clamped between first order compression unit 20 and second level compression unit 21
Space bar 22；Described first order compression unit 20 includes being arranged on the upper cylinder body 23 on central dividing plate 22 top, is arranged on upper cylinder body 23
Interior and be enclosed within upper piston 25 outside bent axle 19, upper cylinder body low pressure chamber 23a and upper cylinder body high pressure chest 23b will be divided in upper cylinder body 23
Upper slide plate 27 end face of upper cylinder body 23 is closed and also serves as the upper bearing (metal) 29 of bent axle 19 bearing；Described second level compression unit
21 include being arranged on the lower cylinder body 24 of central dividing plate 22 bottom, are arranged in lower cylinder body 24 and are enclosed within the lower piston outside bent axle 19
26, the lower slide plate 28 of lower cylinder body low pressure chamber 24a and lower cylinder body high pressure chest 24b will be divided in lower cylinder body 24, by lower cylinder body 24
End face is closed and also serves as the lower bearing 30 of bent axle 19 bearing；；Described upper slide plate 27 and lower slide plate 28 are able in setting
Move back and forth in the upper cylinder body vane slot 43 on the cylinder wall of upper cylinder body 23 and lower cylinder body 24 and lower cylinder body vane slot 44, and point
It is not made always to contact with upper piston 25 and lower piston 26 by upper cylinder body spring 45 and lower cylinder body spring 46；Described central dividing plate
22 are provided with and make bent axle 19 and interstitial hole 22a that intermediate-pressure gas are passed through and side hole 22b；Exhaust silencer 31 and upper bearing (metal) 29
Pressure gas dead room 32 in formation, lower ball cover 33 forms high pressure gas dead room 34, low pressure air suction mouth 35 edge with lower bearing 30
Upper cylinder body 23 radially, and is connected with reservoir 37 by low pressure air suction pipe 36, and high pressure air suction way 38 is from top to bottom by upper bearing (metal)
29th, upper cylinder body 23 and central dividing plate 22 perforate composition vertically, high pressure air entry 39 is along lower cylinder body 24 radial direction and high pressure
Air suction way 38 is connected, and middle pressure pore 40 and high pressure gas hole 41 are respectively on upper cylinder body 23 and lower cylinder body 24, high pressure
Gas dead room 34 is connected with high-pressure exhaust pipe 42, and the gas in high pressure gas dead room 34 is discharged by high-pressure exhaust pipe 42；Institute
State bent axle 19 to be provided with along the oilhole 48 in center vertical line direction and communicate with oilhole 48 and multiple feed bore transversely.
As the preferred embodiment of the present invention, described upper bearing (metal) 29, upper cylinder body 23, central dividing plate 22, lower cylinder body 24 and
Lower bearing 30 configures on bent axle 19 from top to bottom successively, and by multiple installation bolts 47 and exhaust silencer 31 and lower bearing
Lid 33 is integrally connected.
As the preferred embodiment of the present invention, it is to have support 49 that the outer base of described housing 11 is installed.
As shown in figure 1, the method for work of 2 stage rotary compressor of the present invention, first, so that motor 12 is energized and start, band
Dynamic rotor 18 rotates, the rotation rotarily driving bent axle 19 of rotor 18, bent axle 19 rotarily drive upper piston 25 and lower piston 26
Eccentric rotary in upper cylinder body 23 and lower cylinder body 24 respectively；Low pressure refrigerant gas are via reservoir 37, low pressure air suction pipe 36, figure
The low pressure air suction mouth 35 of the upper cylinder body 23 shown in 2 is drawn into upper cylinder body low pressure chamber 23a, and by the rotary motion of upper piston 25 with
And low pressure refrigerant gas are carried out the first order and are compressed to intermediate pressure, then from upper cylinder body 23 by the reciprocating motion of upper slide plate 27
Upper cylinder body high pressure chest 23b, drains into the shell of compressor via middle pressure pore 40, middle pressure gas dead room 32 and exhaust silencer 31
In body 11；Then, the refrigerant superheat gas part being in intermediate pressure discharged from upper cylinder body 23 absorbs motor 12 heat
After amount, therefrom pressure trachea 15 discharges the water of low-temperature zone in heat hot water device；Spray in another part gas and middle pressure sparge pipe 16
Superheated vapor after the middle press liquid hybrid cooling going out, via high pressure air suction way 38, and in central dividing plate 22, as Fig. 3 institute
Show, refrigerant gas are drawn into along side hole 22b circumferential flow, the high pressure air entry 39 then entering lower cylinder body 24 as shown in Figure 4
In lower cylinder body low pressure chamber 24a of lower cylinder body 24, and the reciprocating motion of the rotary motion by lower piston 26 and lower slide plate 28 will
Medium pressure gas carry out the second level and are compressed to high pressure, then from the lower cylinder body high pressure chest 24b of lower cylinder body 24, via high pressure gas hole
41st, high pressure gas dead room 34 and high-pressure exhaust pipe 42 drain into the water that compression case goes heat hot water device high temperature section in vitro；With
When, by the rotation of bent axle 19, it is in the lubricating oil of housing 11 bottom, on the oilhole 48 via the vertical direction at bent axle 19 center
Rise, flowed out by the horizontal oilhole being located at midway, be supplied to the bearing of bent axle 19 and respectively compress intracavity, make compressor each motion portion
Part obtains effectively lubricating.
Claims (4)
1. a kind of 2 stage rotary compressor it is characterised in that: described 2 stage rotary compressor (10) is included by lower cover
(11a), the housing (11) that cylinder (11b) and upper lid (11c) form, is arranged on motor (12) in housing (11) and by this electricity
The pump housing (13) that motivation (12) drives；Described upper lid (11c) is provided with the seal socket assembly to motor (12) power supply
(14) and middle pressure trachea (15), cylinder (11b) is provided with middle pressure sparge pipe (16)；Described motor (12) includes being installed on cylinder
Stator (17) on body (11b) and be placed in the rotor (18) inside this stator (17)；
The described pump housing (13) includes bent axle (19), the first order compression unit being fixed on rotor (18) and being extends in the vertical direction
(20), second level compression unit (21) and be clamped in the middle interval between first order compression unit (20) and second level compression unit (21)
Plate (22), described first order compression unit (20) includes being arranged on the upper cylinder body (23) on central dividing plate (22) top, is arranged on upper cylinder half
In body (23) and be enclosed within bent axle (19) upper piston (25) outward, by be divided in upper cylinder body (23) upper cylinder body low pressure chamber (23a) and
The upper slide plate (27) of upper cylinder body high pressure chest (23b), the end face of upper cylinder body (23) is closed and also serves as bent axle (19) bearing
Upper bearing (metal) (29)；Described second level compression unit (21) includes being arranged on the lower cylinder body (24) of central dividing plate (22) bottom, is arranged on
Lower cylinder body (24) is interior and is enclosed within bent axle (19) lower piston (26) outward, is divided into lower cylinder body low pressure chamber 24a by lower cylinder body (24)
With the lower slide plate (28) of lower cylinder body high pressure chest (24b), the end face of lower cylinder body (24) is closed and also serves as bent axle (19) bearing
Lower bearing (30)；Described upper slide plate (27) and lower slide plate (28) are able to be arranged at upper cylinder body (23) and lower cylinder body (24)
Cylinder wall on upper cylinder body vane slot (43) and lower cylinder body vane slot (44) in move back and forth, and respectively by upper cylinder body spring
(45) it is made always to contact with upper piston (25) and lower piston (26) with lower cylinder body spring (46)；Set on described central dividing plate (22)
Have and make bent axle (19) and interstitial hole (22a) that intermediate-pressure gas are passed through and side hole (22b)；
Exhaust silencer (31) and pressure gas dead room (32), lower ball cover (33) and lower bearing (30) in upper bearing (metal) (29) formation
Formed high pressure gas dead room (34), low pressure air suction mouth (35) along upper cylinder body (23) radially, and by low pressure air suction pipe (36) with
Reservoir (37) is connected, and high pressure air suction way (38) is from top to bottom by upper bearing (metal) (29), upper cylinder body (23) and central dividing plate (22)
Perforate composition vertically, high pressure air entry (39) is radially connected with high pressure air suction way (38) along lower cylinder body (24), in
Pressure pore (40) and high pressure gas hole (41) are respectively on upper cylinder body (23) and lower cylinder body (24), high pressure gas dead room
(34) connect with high-pressure exhaust pipe (42), the gas in high pressure gas dead room (34) passes through high-pressure exhaust pipe (42) and discharges；
Described bent axle (19) is provided with the oilhole (48) along center vertical line direction and is communicated with oilhole (48) and transversely multiple
Feed bore.
2. a kind of 2 stage rotary compressor according to claim 1 it is characterised in that: described upper bearing (metal) (29), upper cylinder half
Body (23), central dividing plate (22), lower cylinder body (24) and lower bearing (30) configure from top to bottom successively on bent axle (19), and pass through
Multiple installation bolts (47) are integrally connected with exhaust silencer (31) and lower ball cover (33).
3. a kind of 2 stage rotary compressor according to claim 1 it is characterised in that: the outer base of described housing (11)
Upper installation is that have support (49).
4. 2 stage rotary compressor described in claim 1 method of work it is characterised in that: first, make motor (12) lead to
Electrically activate, rotor driven (18) rotates, the rotation rotarily driving bent axle (19) of rotor (18), the rotarily driving of bent axle (19)
Piston (25) and lower piston (26) eccentric rotary in upper cylinder body (23) and lower cylinder body (24) respectively；
Low pressure refrigerant gas are inhaled via the low pressure air suction mouth (35) of reservoir (37), low pressure air suction pipe (36), upper cylinder body (23)
Enter to upper cylinder body low pressure chamber (23a), and the reciprocating motion of the rotary motion by upper piston (25) and upper slide plate (27) will be low
Compression refrigerant gas carries out the first order and is compressed to intermediate pressure, then from the upper cylinder body high pressure chest (23b) of upper cylinder body (23), via
Middle pressure pore (40), middle pressure gas dead room (32) and exhaust silencer (31) drain in the housing (11) of compressor；Then,
After the refrigerant superheat gas part being in intermediate pressure that upper cylinder body (23) is discharged absorbs motor (12) heat therefrom
Pressure trachea (15) discharges the water of low-temperature zone in heat hot water device；Another part gas and ejection in middle pressure sparge pipe (16)
Superheated vapor after liquid mixing cooling, via high pressure air suction way (38), and in central dividing plate (22), refrigerant gas edge
Side hole (22b) circumferential flow, the high pressure air entry (39) then entering lower cylinder body (24) is drawn into the lower cylinder body of lower cylinder body (24)
In low pressure chamber (24a), and medium pressure gas are entered by the reciprocating motion of the rotary motion by lower piston (26) and lower slide plate (28)
The row second level is compressed to high pressure, then from the lower cylinder body high pressure chest (24b) of lower cylinder body (24), via high pressure gas hole (41), height
Pressure gas dead room (34) and high-pressure exhaust pipe (42) drain into the water that compression case goes heat hot water device high temperature section in vitro；
Meanwhile, by the rotation of bent axle (19), it is in the lubricating oil of housing (11) bottom, via the Vertical Square at bent axle (19) center
To oilhole (48) rise, flowed out by the horizontal oilhole being located at midway, be supplied to the bearing of bent axle (19) and respectively compress intracavity,
The each moving component of compressor is made to obtain effectively lubricating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510206375.8A CN104806523B (en) | 2015-04-27 | 2015-04-27 | Two-stage rotary type compressor and operating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510206375.8A CN104806523B (en) | 2015-04-27 | 2015-04-27 | Two-stage rotary type compressor and operating method thereof |
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| Publication Number | Publication Date |
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| CN104806523A CN104806523A (en) | 2015-07-29 |
| CN104806523B true CN104806523B (en) | 2017-02-01 |
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| CN201510206375.8A Active CN104806523B (en) | 2015-04-27 | 2015-04-27 | Two-stage rotary type compressor and operating method thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020135A (en) * | 2015-08-18 | 2015-11-04 | 武汉凌达压缩机有限公司 | Refrigerating system and compressor thereof |
| CN106089711B (en) * | 2016-07-20 | 2019-04-05 | 广东美芝制冷设备有限公司 | Multi-cylinder rotation compressor and refrigerating circulatory device with it |
| CN110056507B (en) * | 2019-05-28 | 2023-08-01 | 西安交通大学 | Multistage rotary compressor with top middle cavity and working method |
| CN112128103B (en) * | 2020-08-24 | 2022-09-06 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigeration cycle system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002276578A (en) * | 2001-03-14 | 2002-09-25 | Matsushita Electric Ind Co Ltd | Rotary type multi-stage compressor |
| CN102588291A (en) * | 2011-01-11 | 2012-07-18 | 珠海格力电器股份有限公司 | Spray liquid cooling device and compressor provided with same |
| CN102606481A (en) * | 2011-01-25 | 2012-07-25 | 广东美芝制冷设备有限公司 | Anti-overheating device for rotary compressor |
| CN102644596B (en) * | 2011-02-16 | 2014-09-10 | 广东美芝制冷设备有限公司 | Capacity control type rotary compressor |
| US9695819B2 (en) * | 2011-12-22 | 2017-07-04 | Panasonic Intellectual Property Management Co., Ltd. | Rotary compressor with cylinder immersed in oil |
| CN204591675U (en) * | 2015-04-27 | 2015-08-26 | 西安交通大学 | A kind of 2 stage rotary compressor |
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