CN104806523A - 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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- CN104806523A CN104806523A CN201510206375.8A CN201510206375A CN104806523A CN 104806523 A CN104806523 A CN 104806523A CN 201510206375 A CN201510206375 A CN 201510206375A CN 104806523 A CN104806523 A CN 104806523A
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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, be specifically related to a kind of 2 stage rotary compressor and method of work thereof.
Background technique
Compressor, as the heart of the whole air-source water heater circulatory system, is compressed to high pressure conditions refrigerant vapour from low-pressure state, for circulation provides power, refrigeration cycle is carried out again and again.The reliable operation of guarantee compressor is vital.Compared with traditional compressor, freon class heat pump water heater compressor is due to reasons such as its condensing temperature is high, long operational times, and its operating conditions is more severe, and the reliability and stability of compressor is more difficult to ensure card.
Due to the work condition state that above-mentioned water heater compressor is special, a series of problem will be there is, reduce the reliability of compressor.The first, the high pressure ratio of refrigeration agent will make compressor exhaust temperature raise, thus reduce the lubrication effect etc. of lubricant oil; The second, the heat of motor is more difficult to shed, and electrode is easily burnt.3rd, the stressed load of the pump housing increases, and is easy to wearing and tearing.
Summary of the invention
In order to solve above-mentioned prior art Problems existing, the invention provides a kind of 2 stage rotary compressor and method of work thereof, back pressure in the middle of adopting in housing, the middle temperature refrigeration agent effective cooling motor that one stage of compression is discharged; Refrigeration agent after cooling motor is directly used in heating low temperature water, and when avoiding two-stage compression, refrigeration agent is unnecessary overheated, effectively make use of again the heat heating water of motor; Adopt hydrojet technology, reduce the secondary inlet degree of superheat, thus effectively reduce compressor exhaust temperature.
In order to achieve the above object, the present invention adopts following technological scheme:
A kind of 2 stage rotary compressor, described 2 stage rotary compressor 10 comprises the housing 11 be made up of lower cover 11A, cylindrical shell 11B and upper cover 11C, the pump housing 13 being arranged on the motor 12 in housing 11 and being driven by this motor 12, described upper cover 11C is provided with the seal socket assembly 14 and middle pressure tracheae 15 of powering to motor 12, and cylindrical shell 11B is provided with middle pressure liquid-spraying pipe 16, described motor 12 comprises the rotor 18 being installed on stator on cylindrical shell 11B 17 and being placed in inside this stator 17, the described pump housing 13 comprise fixing on a rotor 18 and the bent axle 19 vertically extended, first order press part 20, second level press part 21 and the intermediate clapboard 22 that is clamped between first order press part 20 and second level press part 21, described first order press part 20 comprises the upper cylinder body 23 being arranged on intermediate clapboard 22 top, to be arranged in upper cylinder body 23 and the upper piston 25 be enclosed within outside bent axle 19, the upper slide plate 27 of upper cylinder body low-pressure cavity 23a and upper cylinder body hyperbaric chamber 23b will be divided in upper cylinder body 23, the end face of upper cylinder body 23 be closed and the double upper bearing (metal) 29 making bent axle 19 bearing, described second level press part 21 comprises the lower cylinder body 24 being arranged on intermediate clapboard 22 bottom, to be arranged in lower cylinder body 24 and the lower piston 26 be enclosed within outside bent axle 19, the lower slide plate 28 of lower cylinder body low-pressure cavity 24a and lower cylinder body hyperbaric chamber 24b will be divided in lower cylinder body 24, the end face of lower cylinder body 24 be closed and the double lower bearing 30 making bent axle 19 bearing, described upper slide plate 27 and lower slide plate 28 respectively can to-and-fro motion in upper cylinder body vane slot 43 on the cylinder wall being arranged at upper cylinder body 23 and lower cylinder body 24 and lower cylinder body vane slot 44, and make it always contact with lower piston 26 with upper piston 25 by upper cylinder body spring 45 and lower cylinder body spring 46 respectively, described intermediate clapboard 22 is provided with intermediate hole 22a and other hole 22b that bent axle 19 and intermediate-pressure gas are passed through, pressure gas anechoic room 32 during exhaust silencer 31 and upper bearing (metal) 29 are formed, lower ball cover 33 and lower bearing 30 form high pressure gas anechoic room 34, low pressure air suction mouth 35 is radial along upper cylinder body 23, and be connected with liquid-storage container 37 by low pressure air suction pipe 36, high pressure air suction way 38 is from top to bottom by upper bearing (metal) 29, upper cylinder body 23 and intermediate clapboard 22 perforate composition vertically, high pressure intakeport 39 is connected along lower cylinder body 24 radial direction with high pressure air suction way 38, middle pressure pore 40 and high pressure gas hole 41 are on upper cylinder body 23 and lower cylinder body 24 respectively, high pressure gas anechoic room 34 is communicated with high-pressure exhaust pipe 42, gas in high pressure gas anechoic room 34 is discharged by high-pressure exhaust pipe 42, described bent axle 19 is provided with the oilhole 48 in centrally vertical line direction and communicates with oilhole 48 and multiple feed bore transversely.
Described upper bearing (metal) 29, upper cylinder body 23, intermediate clapboard 22, lower cylinder body 24 and lower bearing 30 are configured on bent axle 19 from top to bottom successively, and are integrally connected and fixed with exhaust silencer 31 and lower ball cover 33 by multiple construction bolt 47.
It is have support 49 that the outer base of described housing 11 is installed.
The method of work of 2 stage rotary compressor described above, first, motor 12 is energized and starts, rotor driven 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 is drawn into upper cylinder body low-pressure cavity 23a via the low pressure air suction mouth 35 of liquid-storage container 37, low pressure air suction pipe 36, upper cylinder body 23, and by the rotary motion of upper piston 25 and the to-and-fro motion of upper slide plate 27, low pressure refrigerant gas is carried out the first order and be compressed to intermediate pressure, then from the upper cylinder body hyperbaric chamber 23b of upper cylinder body 23, drain in the housing 11 of compressor via middle pressure pore 40, middle pressure gas anechoic room 32 and exhaust silencer 31, then, after refrigerant superheat gas part absorption motor 12 heat of the pressure that mediates of upper cylinder body 23 discharge, therefrom pressure tracheae 15 discharges the water of low-temperature zone heating water heater, superheated vapor after the liquid hybrid cooling sprayed in another part gas and middle pressure liquid-spraying pipe 16, via high pressure air suction way 38, and in intermediate clapboard 22, refrigerant gas is along other hole 22b circumferential flow, the high pressure intakeport 39 then entering lower cylinder body 24 is drawn in the lower cylinder body low-pressure cavity 24a of lower cylinder body 24, and by the rotary motion of lower piston 26 and the to-and-fro motion of lower slide plate 28, medium pressure gas is carried out the second level and be compressed to high pressure, then from the lower cylinder body hyperbaric chamber 24b of lower cylinder body 24, via high pressure gas hole 41, high pressure gas anechoic room 34 and high-pressure exhaust pipe 42 drain into the external water going high temperature section in heating water heater of compression case, meanwhile, by the rotation of bent axle 19, be in the lubricant oil bottom housing 11, oilhole 48 via the Vertical direction at bent axle 19 center rises, flowed out by the horizontal oilhole being located at midway, in the bearing being supplied to bent axle 19 and each compression chamber, make each moving element of compressor obtain effectively lubricating.
Compared to the prior art comparatively, the present invention possesses following advantage:
1, part intermediate-pressure gas is discharged by middle pressure tracheae after crossing motor, and this gas temperature can not be too high, effectively can reduce motor temperature, avoids too high the causing of motor temperature to burn,
2. the refrigerant gas absorbing motor heat of being discharged by middle pressure tracheae removes the water of the low-temperature zone adding water heater, effectively make use of the heat of motor, improves efficiency of energy utilization.
3. hydrojet technology in the middle of adopting, reduces the secondary inlet degree of superheat, thus effectively reduces compressor exhaust temperature.
Accompanying drawing explanation
Fig. 1 is 2 stage rotary compressor structural representation of the present invention.
Fig. 2 is 2 stage rotary compressor A-A generalized section of Fig. 1.
Fig. 3 is 2 stage rotary compressor B-B generalized section of Fig. 1.
Fig. 4 is 2 stage rotary compressor C-C generalized section of Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail:
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 compressor 10 comprises the housing 11 be made up of lower cover 11A, cylindrical shell 11B and upper cover 11C, the pump housing 13 being arranged on the motor 12 in housing 11 and being driven by this motor 12, described upper cover 11C is provided with the seal socket assembly 14 and middle pressure tracheae 15 of powering to motor 12, and cylindrical shell 11B is provided with middle pressure liquid-spraying pipe 16, described motor 12 comprises the rotor 18 being installed on stator on cylindrical shell 11B 17 and being placed in inside this stator 17, the described pump housing 13 comprise fixing on a rotor 18 and the bent axle 19 vertically extended, first order press part 20, second level press part 21 and the intermediate clapboard 22 that is clamped between first order press part 20 and second level press part 21, described first order press part 20 comprises the upper cylinder body 23 being arranged on intermediate clapboard 22 top, to be arranged in upper cylinder body 23 and the upper piston 25 be enclosed within outside bent axle 19, the end face of upper cylinder body 23 is closed and the double upper bearing (metal) 29 making bent axle 19 bearing by the upper slide plate 27 being divided into upper cylinder body low-pressure cavity 23a and upper cylinder body hyperbaric chamber 23b in upper cylinder body 23, described second level press part 21 comprises the lower cylinder body 24 being arranged on intermediate clapboard 22 bottom, to be arranged in lower cylinder body 24 and the lower piston 26 be enclosed within outside bent axle 19, the lower slide plate 28 of lower cylinder body low-pressure cavity 24a and lower cylinder body hyperbaric chamber 24b will be divided in lower cylinder body 24, the end face of lower cylinder body 24 be closed and the double lower bearing 30 making bent axle 19 bearing, , described upper slide plate 27 and lower slide plate 28 respectively can to-and-fro motion in upper cylinder body vane slot 43 on the cylinder wall being arranged at upper cylinder body 23 and lower cylinder body 24 and lower cylinder body vane slot 44, and make it always contact with lower piston 26 with upper piston 25 by upper cylinder body spring 45 and lower cylinder body spring 46 respectively, described intermediate clapboard 22 is provided with intermediate hole 22a and other hole 22b that bent axle 19 and intermediate-pressure gas are passed through, pressure gas anechoic room 32 during exhaust silencer 31 and upper bearing (metal) 29 are formed, lower ball cover 33 and lower bearing 30 form high pressure gas anechoic room 34, low pressure air suction mouth 35 is radial along upper cylinder body 23, and be connected with liquid-storage container 37 by low pressure air suction pipe 36, high pressure air suction way 38 is from top to bottom by upper bearing (metal) 29, upper cylinder body 23 and intermediate clapboard 22 perforate composition vertically, high pressure intakeport 39 is connected along lower cylinder body 24 radial direction with high pressure air suction way 38, middle pressure pore 40 and high pressure gas hole 41 are on upper cylinder body 23 and lower cylinder body 24 respectively, high pressure gas anechoic room 34 is communicated with high-pressure exhaust pipe 42, gas in high pressure gas anechoic room 34 is discharged by high-pressure exhaust pipe 42, described bent axle 19 is provided with the oilhole 48 in centrally vertical line direction and communicates 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, intermediate clapboard 22, lower cylinder body 24 and lower bearing 30 are configured on bent axle 19 from top to bottom successively, and are integrally connected and fixed with exhaust silencer 31 and lower ball cover 33 by multiple construction bolt 47.
As the preferred embodiment of the present invention, it is have support 49 that the outer base of described housing 11 is installed.
As shown in Figure 1, the method of work of 2 stage rotary compressor of the present invention, first, motor 12 is energized start, rotor driven 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 is drawn into upper cylinder body low-pressure cavity 23a via the low pressure air suction mouth 35 of the upper cylinder body 23 shown in liquid-storage container 37, low pressure air suction pipe 36, Fig. 2, and by the rotary motion of upper piston 25 and the to-and-fro motion of upper slide plate 27, low pressure refrigerant gas is carried out the first order and be compressed to intermediate pressure, then from the upper cylinder body hyperbaric chamber 23b of upper cylinder body 23, drain in the housing 11 of compressor via middle pressure pore 40, middle pressure gas anechoic room 32 and exhaust silencer 31, then, after refrigerant superheat gas part absorption motor 12 heat of the pressure that mediates of upper cylinder body 23 discharge, therefrom pressure tracheae 15 discharges the water of low-temperature zone heating water heater, superheated vapor after the middle press liquid hybrid cooling sprayed in another part gas and middle pressure liquid-spraying pipe 16, via high pressure air suction way 38, and in intermediate clapboard 22, as shown in Figure 3, refrigerant gas is along other hole 22b circumferential flow, the high pressure intakeport 39 then entering lower cylinder body 24 is as shown in Figure 4 drawn in the lower cylinder body low-pressure cavity 24a of lower cylinder body 24, and by the rotary motion of lower piston 26 and the to-and-fro motion of lower slide plate 28, medium pressure gas is carried out the second level and be compressed to high pressure, then from the lower cylinder body hyperbaric chamber 24b of lower cylinder body 24, via high pressure gas hole 41, high pressure gas anechoic room 34 and high-pressure exhaust pipe 42 drain into the external water going high temperature section in heating water heater of compression case, meanwhile, by the rotation of bent axle 19, be in the lubricant oil bottom housing 11, oilhole 48 via the Vertical direction at bent axle 19 center rises, flowed out by the horizontal oilhole being located at midway, in the bearing being supplied to bent axle 19 and each compression chamber, make each moving element of compressor obtain effectively lubricating.
Claims (4)
1. a 2 stage rotary compressor, it is characterized in that: described 2 stage rotary compressor (10) comprises the housing (11) be made up of lower cover (11A), cylindrical shell (11B) and upper cover (11C), the pump housing (13) being arranged on the motor (12) in housing (11) and being driven by this motor (12); Described upper cover (11C) is provided with the seal socket assembly (14) and middle pressure tracheae (15) of powering to motor (12), and cylindrical shell (11B) is provided with middle pressure liquid-spraying pipe (16); Described motor (12) comprises the stator (17) be installed on cylindrical shell (11B) and the rotor (18) being placed in this stator (17) inner side;
The described pump housing (13) comprises and is fixed on the upper and bent axle (19) vertically extended of rotor (18), first order press part (20), second level press part (21) and the intermediate clapboard (22) be clamped between first order press part (20) and second level press part (21), described first order press part (20) comprises the upper cylinder body (23) being arranged on intermediate clapboard (22) top, to be arranged in upper cylinder body (23) and to be enclosed within bent axle (19) upper piston outward (25), the upper slide plate (27) of upper cylinder body low-pressure cavity (23a) and upper cylinder body hyperbaric chamber (23b) will be divided in upper cylinder body (23), the end face of upper cylinder body (23) is closed and the double upper bearing (metal) (29) making bent axle (19) bearing, described second level press part (21) comprises the lower cylinder body (24) being arranged on intermediate clapboard (22) bottom, to be arranged in lower cylinder body (24) and to be enclosed within bent axle (19) lower piston outward (26), the lower slide plate (28) of lower cylinder body low-pressure cavity 24a and lower cylinder body hyperbaric chamber (24b) will be divided in lower cylinder body (24), the end face of lower cylinder body (24) be closed and the double lower bearing (30) making bent axle (19) bearing, described upper slide plate (27) and lower slide plate (28) respectively can to-and-fro motion in upper cylinder body vane slot (43) on the cylinder wall being arranged at upper cylinder body (23) and lower cylinder body (24) and lower cylinder body vane slot (44), and make it always contact with lower piston (26) with upper piston (25) by upper cylinder body spring (45) and lower cylinder body spring (46) respectively, described intermediate clapboard (22) is provided with intermediate hole (22a) and other hole (22b) that bent axle (19) and intermediate-pressure gas are passed through,
Pressure gas anechoic room (32) during exhaust silencer (31) and upper bearing (metal) (29) are formed, lower ball cover (33) and lower bearing (30) form high pressure gas anechoic room (34), low pressure air suction mouth (35) is radial along upper cylinder body (23), and be connected with liquid-storage container (37) by low pressure air suction pipe (36), high pressure air suction way (38) is from top to bottom by upper bearing (metal) (29), upper cylinder body (23) and intermediate clapboard (22) perforate composition vertically, high pressure intakeport (39) is connected along lower cylinder body (24) radial direction with high pressure air suction way (38), middle pressure pore (40) and high pressure gas hole (41) are on upper cylinder body (23) and lower cylinder body (24) respectively, high pressure gas anechoic room (34) is communicated with high-pressure exhaust pipe (42), gas in high pressure gas anechoic room (34) is discharged by high-pressure exhaust pipe (42),
Described bent axle (19) is provided with the oilhole (48) in centrally vertical line direction and communicates with oilhole (48) and multiple feed bore transversely.
2. a kind of 2 stage rotary compressor according to claim 1, it is characterized in that: described upper bearing (metal) (29), upper cylinder body (23), intermediate clapboard (22), lower cylinder body (24) and lower bearing (30) are configured on bent axle (19) from top to bottom successively, and be integrally connected and fixed by multiple construction bolt (47) and exhaust silencer (31) and lower ball cover (33).
3. a kind of 2 stage rotary compressor according to claim 1, is characterized in that: it is have support (49) that the outer base of described housing (11) is installed.
4. the method for work of 2 stage rotary compressor described in claim 1, it is characterized in that: first, motor (12) is energized start, rotor driven (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 is via liquid-storage container (37), low pressure air suction pipe (36), the low pressure air suction mouth (35) of upper cylinder body (23) is drawn into upper cylinder body low-pressure cavity (23a), and by the rotary motion of upper piston (25) and the to-and-fro motion of upper slide plate (27), low pressure refrigerant gas is carried out the first order and be compressed to intermediate pressure, then from the upper cylinder body hyperbaric chamber (23b) of upper cylinder body (23), via middle pressure pore (40), middle pressure gas anechoic room (32) and exhaust silencer (31) drain in the housing (11) of compressor, then, after the refrigerant superheat gas part of the pressure that mediates of discharging from upper cylinder body (23) absorbs motor (12) heat, therefrom pressure tracheae (15) discharges the water of low-temperature zone heating water heater, superheated vapor after the liquid hybrid cooling sprayed in another part gas and middle pressure liquid-spraying pipe (16), via high pressure air suction way (38), and in intermediate clapboard (22), refrigerant gas is along other hole (22b) circumferential flow, the high pressure intakeport (39) then entering lower cylinder body (24) is drawn in the lower cylinder body low-pressure cavity (24a) of lower cylinder body (24), and by the rotary motion of lower piston (26) and the to-and-fro motion of lower slide plate (28), medium pressure gas is carried out the second level and be compressed to high pressure, then from the lower cylinder body hyperbaric chamber (24b) of lower cylinder body (24), via high pressure gas hole (41), high pressure gas anechoic room (34) and high-pressure exhaust pipe (42) drain into the external water going high temperature section in heating water heater of compression case,
Simultaneously, by the rotation of bent axle (19), be in the lubricant oil of housing (11) bottom, oilhole (48) via the Vertical direction at bent axle (19) center rises, flowed out by the horizontal oilhole being located at midway, in the bearing being supplied to bent axle (19) and each compression chamber, each moving element of compressor is made to obtain effectively lubricating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510206375.8A CN104806523B (en) | 2015-04-27 | 2015-04-27 | Two-stage rotary type compressor and operating method thereof |
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| CN201510206375.8A CN104806523B (en) | 2015-04-27 | 2015-04-27 | Two-stage rotary type compressor and operating method thereof |
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| CN104806523B CN104806523B (en) | 2017-02-01 |
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| CN105020135A (en) * | 2015-08-18 | 2015-11-04 | 武汉凌达压缩机有限公司 | Refrigerating system and compressor thereof |
| CN106089711A (en) * | 2016-07-20 | 2016-11-09 | 广东美芝制冷设备有限公司 | Multi-cylinder rotation compressor and there is its refrigerating circulatory device |
| CN110056507A (en) * | 2019-05-28 | 2019-07-26 | 西安交通大学 | A kind of multi-stage rotary compressor and working method with top center chamber |
| CN112128103A (en) * | 2020-08-24 | 2020-12-25 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigeration cycle system |
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| CN105020135A (en) * | 2015-08-18 | 2015-11-04 | 武汉凌达压缩机有限公司 | Refrigerating system and compressor thereof |
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| CN110056507B (en) * | 2019-05-28 | 2023-08-01 | 西安交通大学 | Multistage rotary compressor with top middle cavity and working method |
| CN112128103A (en) * | 2020-08-24 | 2020-12-25 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigeration cycle system |
| 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 |
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