CN201031797Y - Totally enclosed double screws type ammonia refrigerating compressor - Google Patents
Totally enclosed double screws type ammonia refrigerating compressor Download PDFInfo
- Publication number
- CN201031797Y CN201031797Y CNU2007200696013U CN200720069601U CN201031797Y CN 201031797 Y CN201031797 Y CN 201031797Y CN U2007200696013 U CNU2007200696013 U CN U2007200696013U CN 200720069601 U CN200720069601 U CN 200720069601U CN 201031797 Y CN201031797 Y CN 201031797Y
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- housing
- compression set
- magnet
- protecting jacket
- totally enclosed
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Abstract
The utility model discloses a totally-sealed double-screw ammonia refrigeration compressor, including an inlet pipe, an outlet pipe, a motor, and a double-screw compressing device and a magnetic coupling comprising a shield sleeve is positioned wherein between the motor and the double-screw compressing device, at the mouth of which the opening of the shielding sleeve is fixed and forms a sealing cavity with the housing of the compressing device. Using ammonia as a refrigerant, the utility model pollutes no atmospheric ozone layer, causes no greenhouse effect, has a good environmental protection performance and energy-saving performance, can be used in an air conditioner, a vehicle, a marine refrigeration device and a small refrigeration storage, etc. and in other fields needing air compressing.
Description
Technical field
The utility model relates to refrigeration compressor, relates in particular to a kind of Totally enclosed double screws type ammonia refrigerating compressor.
Background technique
Current refrigeration compressor adopts freon as refrigeration agent mostly.In order to reduce greenhouse effect, protect atmospheric ozone layer, people seek to adopt low public hazards, environmental protection class material to come the replacement fluorine Leon just hardy.Ammonia be to atmospheric ozone layer do not have destruction, to one of Global Greenhouse Effect only a few working medium like water off a duck's back, and use inexpensive efficient as refrigeration agent.But the ammonia steam has corrosive action to copper and Cuprum alloy (except the phosphor bronze), therefore, can not use copper and copper alloy in the refrigeration system of ammonia.In addition, ammonia has bigger toxicity, in case leak, with contaminated air, food, and the eyes and the respiratory apparatus that stimulate the people.Because above-mentioned shortcoming, make ammonia seldom as refrigerant applications in small-sized refrigeration plant.
The double-screw type refrigeration compressor is one of main machine in the refrigeration compressor.According to the combination form of motor and compression set, the double-screw type refrigeration compressor can be divided into opening type, semi-enclosed and totally-enclosed double-screw type refrigeration compressor.Wherein, totally enclosed type double-screw type refrigeration compressor is that compression set and motor are contained in the dead shell of weldering, and a rotor of compression set directly is connected with motor.Because the coil of motor all is to form with the copper cash coiling, and ammonia has strong corrosion to copper, thereby, adopt the totally-enclosed double-screw type refrigeration compressor of existing structure can't adopt ammonia as refrigeration agent.
Summary of the invention
The purpose of this utility model is to provide a kind of can use ammonia and safety, Totally enclosed double screws type ammonia refrigerating compressor efficiently.
The technological scheme that the utility model adopted is: a kind of Totally enclosed double screws type ammonia refrigerating compressor, comprise suction tude, outlet pipe, motor and double-screw type compression set, the double-screw type compression set comprises compression member and covers on the outer compression set housing of compression member, compression member comprises body, male rotor, female rotor, described male rotor comprises a central shaft, wherein, suction tude and outlet pipe are arranged on the compression set housing; Compressor also comprises a magnetic shaft coupling, and magnetic shaft coupling is connected between motor and the double-screw type compression set; Magnetic shaft coupling comprises the outer magnet and the inner magnet of circle ring column shape, inner magnet is coaxial to be set in the outer magnet, tighten at the external cylindrical surface of outer magnet and to be with the outer magnet protecting jacket, the outer magnet protecting jacket has the upper edge portion that is higher than outer magnet and is lower than the lower edge portion of outer magnet; On bore area, external cylindrical surface and two axial ends of inner magnet, be coated with the inner magnet protecting jacket; The outer magnet protecting jacket is fixedlyed connected with the output shaft of motor, fixedlys connected with the central shaft of the male rotor of double-screw type compression set at the inner magnet protecting jacket of the bore area of inner magnet; Magnetic shaft coupling also comprises a housing, and housing is the calyptra of a lower ending opening, and the perisporium of housing is set in the gap between outer magnet and the inner magnet protecting jacket; The opening portion of housing is fixedly arranged on the oral area of compression set housing, forms a seal chamber with the compression set housing, and inner magnet protecting jacket, inner magnet and compression member are arranged in the sealing cavity; Housing and inner magnet protecting jacket are made by nonmagnetic substance.
Above-mentioned Totally enclosed double screws type ammonia refrigerating compressor, be characterized in, compressor comprises that also one covers on the coupling housing of magnetic shaft coupling outside, respectively is provided with a flange in the top and bottom of coupling housing, fixedlys connected with the flange of this coupling housing lower end in the lower end of housing; Respectively be provided with a flange in the lower end of motor and the upper end of compression set housing, motor is fixedlyed connected by flange separately respectively with the coupling housing with coupling housing, compression set housing.
Above-mentioned Totally enclosed double screws type ammonia refrigerating compressor, be characterized in, each tile-shaped permanent magnet by the polylith radial magnetizing of outer magnet and inner magnet forms along circumferentially closely arranging in the alternating polarity mode, and is opposite with the tile-shaped permanent magnet polarity of inner magnet at the tile-shaped permanent magnet of same outer magnet in the radial direction.
Technique effect of the present utility model is: 1. the utility model can adopt ammonia as refrigeration agent, can not destroy atmospheric ozone layer and produce greenhouse effect, has favorable environment protection and energy saving; 2. the utility model can be sealed in ammonia in housing and the compression set housing, does not have to leak, and is safe in utilization; 3. adopted the double-screw type compression set, the efficient height, reliable, long service life; 4. advantages such as noise was light when the utility model also had work, volume is little, compact structure.
Description of drawings
Fig. 1 is the structural representation of first kind of mode of execution of Totally enclosed double screws type ammonia refrigerating compressor of the present utility model;
Fig. 2 is the structural representation of second kind of mode of execution of Totally enclosed double screws type ammonia refrigerating compressor of the present utility model;
Fig. 3 is the pole arrangement mode schematic representation of outer magnet of the present utility model and inner magnet.
Embodiment
Fig. 1 is the structural representation of first kind of mode of execution of the utility model Totally enclosed double screws type ammonia refrigerating compressor.The Totally enclosed double screws type ammonia refrigerating compressor of this first kind of mode of execution is a vertical compressor, and it comprises motor 3, magnetic shaft coupling 2 and compression set 1.The vertical successively from top to bottom setting of motor 3, magnetic shaft coupling 2 and compression set 1.Be provided with a flange 31 in the lower end of motor 3.Be provided with a coupling housing 4 in the outside of magnetic shaft coupling 2,4 pairs of magnetic shaft couplings 2 of coupling housing play the effect of protection and supporting.The upper end of coupling housing 4 is provided with a flange 41 that is complementary with flange 31, and motor 3 and coupling housing 4 link together by flange 31 and flange 41 usefulness bolton.Magnetic shaft coupling 2 comprises outer magnet 21, outer magnet protecting jacket 22, inner magnet 23, inner magnet protecting jacket 24, housing 25, upper bearing (metal) 26 and lower bearing 27.Outer magnet 21 and inner magnet 23 coaxial settings, be the circle ring column shape, form along circumferentially closely arranging by several tile-shaped permanent magnets respectively in the alternating polarity mode through radial magnetizing, opposite at the tile-shaped permanent magnet of same outer magnet in the radial direction with the tile-shaped permanent magnet polarity of inner magnet.Fig. 3 schematically shows the pole arrangement mode of outer magnet 21 and inner magnet 23.In a kind of optimal way, the thickness of outer magnet is than the thin thickness of inner magnet, to reach the purpose of saving materials under equal effect.Return Fig. 1, tighten at the external cylindrical surface of outer magnet 21 and overlapping an outer magnet protecting jacket 22, the upper end of outer magnet protecting jacket is than outer magnet height, and the part that is higher than outer magnet is a upper edge portion; The lower end is lower than outer magnet, and the part that is lower than outer magnet is a lower edge portion.Have axis hole 221 in the upper end of outer magnet protecting jacket 22, the output shaft 32 of motor 3 passes axis hole 221, is connected with outer magnet protecting jacket 22 by key 32a.Thus, motor 3 can drive outer magnet protecting jacket 22 and outer magnet 21 rotates together.On bore area, external cylindrical surface and two axial ends of inner magnet 23, all fixedly be wrapped in inner magnet protecting jacket 24.Housing 25 is the calyptra of a lower ending opening, and its perisporium is set in the gap between outer magnet 21 and the inner magnet protecting jacket 24, and its lower end is by on the flange 42 that is fixedly welded on the lower end that is arranged on coupling housing 4.Respectively be with upper bearing (metal) 26 and lower bearing 27 in the above and below of housing 25.Upper bearing (metal) 26 and lower bearing 27 closely cooperate with the upper edge portion of outer magnet protecting jacket 22 and the inwall of lower edge portion respectively.Be lined with a metal washer 28 between the last axial end of lower bearing 27 and the following axial end face of outer magnet 21, like this, can avoid outer magnet 21 to produce wearing and tearing when rotated and between the lower bearing 27.Inner magnet protecting jacket 24 and housing 25 are made by the nonmagnetic substance of anti-ammonia corrosion, as stainless steel, titanium, plastics etc.Outer magnet protecting jacket 22 is made by the iron and steel magnetic material, and the magnetic line of force outside to described outer magnet forms shielding, with inside increase magnetic force.Compression set 1 is a double-screw type compression set, comprises compression set housing 15 and compression member, and compression member is arranged in the compression set housing 15.Be provided with in 15 upper end of compression set housing and flange 42 flange 11 that is complementary.Above-mentioned compression member comprises body 12, female rotor 16, male rotor 17, rolling bearing 18.Coupling housing 4 links together by flange 42 and flange 11 usefulness screws with compression set 1.Also flange 11 and 42 directly can be welded together.In the present embodiment; by between housing 25 and the flange 42 be connected and flange 42 and flange 11 between be connected; make housing 25 and compression set housing 15 connect and compose the cavity of a sealing; in compression member in inner magnet protecting jacket 24, inner magnet 23 and the compression set housing is sealed in, thereby make the refrigerant vapor in the sealing chamber can not leak.In a kind of preferred implementation, the lower end of housing 25 is by welding or screw is direct and flange 11 links together.In another kind is preferably implemented, flange 11 is replaced with cover plate, the lower end of this cover plate and flange 42 and housing 25 welds together.Be fixed together by screw or welding between body 12 and the compression set housing 15.Exhaust end cap and air-breathing end cap that body 12 comprises cylinder 121 and is arranged at cylinder 121 two ends.Be provided with female rotor 16 and male rotor 17 in cylinder 121, female rotor 16 and male rotor 17 are bearing on the rolling bearing 18 of air-breathing end cap and exhaust end cap.Male rotor 17 comprises central shaft 171, and central shaft 171 passes the exhaust end cap of body 12 and the center hole of flange 42, and the center hole of inner magnet 23 is passed on its top, and is connected with the inner magnet protecting jacket of the bore area of inner magnet 23.The nut that the upper end of central shaft 171 and is enclosed within on its external diameter interconnects, and plays fixation.In the present embodiment, employing is that the inner magnet protecting jacket 24 of the high strength glue bore area that will be wrapped in inner magnet 23 and 171 outer wall bond together.In another kind of optimal way, can adopt key to connect inner magnet 23 and central shaft 171.Side at compression set housing 15 is provided with suction tude 5.On suction tude 5, also be provided with air-breathing safety check 51, its objective is in order preventing to stop the rotor reversing and to make the rotor tooth wearing and tearing.Be provided with lubricant oil 7 in compression set housing 15, the lubricated centrifugal pumping effect by the upper oil hole 171a in the central shaft 171 of the utility model compressor carries out.Lower end at central shaft 171 also is provided with oil strainer 171b.Each parts of above-mentioned compression set can adopt common ferrous materials, and preferably, suction tude 5 and outlet pipe 6 are made by stainless steel.In a kind of optimal way, outlet pipe 6 is connected with oil separator 60, is provided with an outlet pipe 602 in the upper end of oil separator 60, is provided with filter screen 603 below outlet pipe 602, to purify the ammonia steam of discharging from outlet pipe 6.Be provided with a return tube 601 in the lower end of oil separator 60, the other end of return tube 601 is connected with the bottom of compression set housing 15.The ammonia steam of discharging from outlet pipe 6 enters oil separator 60 separate through gas and oils after, the purified ammonia steam of separating is discharged by outlet pipe 602, the lubricant oil of separating sends back in the compression set housing 15 by return tube 601, and the voltage supply compression apparatus recycles.Oil separator 60 can also play the effect of eliminating noise.
During work, the ammonia steam is entered in the compression set 1 by suction tude 5.Output shaft 32 rotations of motor 3 drive outer magnet protecting jacket 22 and outer magnet 21 and rotate together.When outer magnet 21 rotations; the magnetic force bonding force that is produced between itself and the inner magnet 23; contactlessly drive the inner magnet 23 and the inner magnet protecting jacket 24 that are positioned at housing 25 and rotate together, thus the also and then rotation of the central shaft 171 of feasible and the male rotor 17 that inner magnet protecting jacket 24 links together.Correspondingly, processes such as compression set 1 beginning is air-breathing, compression, exhaust, the ammonia steam of discharge is discharged through outlet pipe 6.Because housing 25 and compression set housing 15 have formed the cavity of a sealing, so the ammonia steam can not leak into the outside of refrigeration compressor, also can not erode to the copper coil of motor.
Fig. 2 is the structural representation of second kind of mode of execution of the utility model Totally enclosed double screws type ammonia refrigerating compressor.The Totally enclosed double screws type ammonia refrigerating compressor of this second kind of mode of execution is a horizontal compressor, the main difference part of itself and first kind of mode of execution is, compression set 1 is not arranged on the below of motor 3, and being arranged on a side of motor 3, magnetic shaft coupling 2 is arranged between motor 3 and the compression set 1.In addition, owing to be horizontal compressor, be difficult to adopt the mode of centrifugal pump oil, but, come rotor is lubricated, seals and pressurized gas is cooled off by being arranged on the injection tubing on the filter 13.Outlet pipe 6 does not connect oil separator, but is provided with a filter screen in relief opening 6, to purify the ammonia steam of discharging.
The present invention can adopt the guiding valve controlling mechanism that compressor is carried out energy adjustment, also can adopt variable-frequency motor to carry out energy adjustment.
The utility model adopts ammonia as refrigeration agent, can not destroy atmospheric ozone layer and produce greenhouse effect, safety, environmental protection; Compression set has adopted the double-screw type compression set, and high working efficiency is reliable, long service life; In addition, the utility model also can use freon etc. as refrigeration agent, and light, the advantages such as volume is little, compact structure of noise when having work.Totally enclosed double screws type ammonia refrigerating compressor of the present utility model can be used for air-conditioning, vehicle and refrigeration peculiar to vessel, miniature cold storage etc., needing also to can be used for other field of gas compression.
Though description of the present utility model combines certain embodiments, but it should be understood by one skilled in the art that the utility model is not limited to embodiment described here, and can carry out various modifications and variations and do not deviate from spirit and scope of the present utility model.
Claims (10)
1. Totally enclosed double screws type ammonia refrigerating compressor, comprise suction tude, outlet pipe, motor and double-screw type compression set, described double-screw type compression set comprises compression member and covers on the outer compression set housing of described compression member, described compression member comprises body, male rotor, female rotor, described male rotor comprises a central shaft, it is characterized in that:
Described suction tude and described outlet pipe are arranged on the described compression set housing;
Described compressor also comprises a magnetic shaft coupling, and described magnetic shaft coupling is connected between described motor and the described double-screw type compression set; Described magnetic shaft coupling comprises the outer magnet and the inner magnet of circle ring column shape, described inner magnet is coaxial to be set in the described outer magnet, tighten at the external cylindrical surface of described outer magnet and to be with the outer magnet protecting jacket, described outer magnet protecting jacket has the upper edge portion that is higher than outer magnet and is lower than the lower edge portion of outer magnet; On bore area, external cylindrical surface and two axial ends of described inner magnet, be coated with the inner magnet protecting jacket; Described outer magnet protecting jacket is fixedlyed connected with the output shaft of described motor, fixedlys connected with the central shaft of the male rotor of described double-screw type compression set at the inner magnet protecting jacket of the bore area of described inner magnet;
Described magnetic shaft coupling also comprises a housing, and described housing is the calyptra of a lower ending opening, and the perisporium of housing is set in the gap between described outer magnet and the described inner magnet protecting jacket; The opening portion of described housing is fixedly arranged on the oral area of described compression set housing, forms a seal chamber with the compression set housing, and described inner magnet protecting jacket, described inner magnet and described compression member are arranged in the described seal chamber;
Described housing and described inner magnet protecting jacket are made by nonmagnetic substance.
2. Totally enclosed double screws type ammonia refrigerating compressor as claimed in claim 1 is characterized in that: upper end and bottom at described housing respectively are with a bearing, and described bearing closely cooperates with the upper edge portion of described outer magnet protecting jacket and the inwall of lower edge portion respectively.
3. Totally enclosed double screws type ammonia refrigerating compressor as claimed in claim 1 is characterized in that:
Described compressor comprises that also one covers on the coupling housing of described magnetic shaft coupling outside, respectively is provided with a flange in the top and bottom of described coupling housing, fixedlys connected with the flange of described coupling housing lower end in the lower end of described housing;
Respectively be provided with a flange in the lower end of described motor and the upper end of described compression set housing, described motor is fixedlyed connected by flange separately respectively with described coupling housing with described coupling housing, described compression set housing.
4. Totally enclosed double screws type ammonia refrigerating compressor as claimed in claim 1 is characterized in that: described compressor comprises that also one covers on the coupling housing of described magnetic shaft coupling outside, respectively is provided with a flange in the top and bottom of described coupling housing;
Respectively being provided with a flange in the lower end of described motor and the upper end of described compression set housing, fixedlys connected with the flange of described compression set housing upper end in the lower end of described housing; Described motor is fixedlyed connected by flange separately respectively with described coupling housing with described coupling, described compression set housing.
5. Totally enclosed double screws type ammonia refrigerating compressor as claimed in claim 1, it is characterized in that: each tile-shaped permanent magnet by the polylith radial magnetizing of described outer magnet and described inner magnet forms along circumferentially closely arranging in the alternating polarity mode, and is opposite with the tile-shaped permanent magnet polarity of inner magnet at the tile-shaped permanent magnet of same outer magnet in the radial direction.
6. Totally enclosed double screws type ammonia refrigerating compressor as claimed in claim 5 is characterized in that: the thickness of described outer magnet is thinner than described inner magnet.
7. Totally enclosed double screws type ammonia refrigerating compressor as claimed in claim 1 is characterized in that: described motor is a variable-frequency motor.
8. Totally enclosed double screws type ammonia refrigerating compressor as claimed in claim 1 is characterized in that: described housing and described inner magnet protecting jacket are made by the nonmagnetic substance of anti-ammonia corrosion.
9. Totally enclosed double screws type ammonia refrigerating compressor as claimed in claim 1 is characterized in that: described external magnet protecting jacket is made by the iron and steel magnetic material.
10. Totally enclosed double screws type ammonia refrigerating compressor as claimed in claim 1 is characterized in that: described compressor also comprises an oil separator, and described oil separator is connected with outlet pipe on being arranged on the compression set housing; The bottom of oil separator is provided with a return tube, and the top of oil separator is provided with an outlet pipe; Described return tube is connected with the bottom of described compression set housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200696013U CN201031797Y (en) | 2007-04-29 | 2007-04-29 | Totally enclosed double screws type ammonia refrigerating compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200696013U CN201031797Y (en) | 2007-04-29 | 2007-04-29 | Totally enclosed double screws type ammonia refrigerating compressor |
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| Publication Number | Publication Date |
|---|---|
| CN201031797Y true CN201031797Y (en) | 2008-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200696013U Expired - Fee Related CN201031797Y (en) | 2007-04-29 | 2007-04-29 | Totally enclosed double screws type ammonia refrigerating compressor |
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| CN (1) | CN201031797Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294567B (en) * | 2007-04-29 | 2010-05-19 | 崔炳如 | Totally enclosed double screws type ammonia refrigerating compressor |
| CN102536821A (en) * | 2012-02-29 | 2012-07-04 | 大连亿斯德制冷设备有限公司 | Semi-closed screw refrigerating compressor for ammonia |
| CN103233895A (en) * | 2013-05-11 | 2013-08-07 | 燕京啤酒(玉林)有限公司 | Rotary vane type vacuum pump discharge filtering mechanism |
| CN103711696A (en) * | 2013-12-29 | 2014-04-09 | 大连亿莱森玛机电有限公司 | Magnetic transmission screw refrigerating compressor |
| CN104329253A (en) * | 2014-09-18 | 2015-02-04 | 苏州欧能螺杆技术有限公司 | Efficient permanent magnet synchronous screw main-engine |
| CN105221418A (en) * | 2015-09-30 | 2016-01-06 | 耐驰（兰州）泵业有限公司 | A kind of magneto drive helical rotor pump |
| CN105221389A (en) * | 2015-10-20 | 2016-01-06 | 翟徐来 | A kind of external power compressor |
-
2007
- 2007-04-29 CN CNU2007200696013U patent/CN201031797Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294567B (en) * | 2007-04-29 | 2010-05-19 | 崔炳如 | Totally enclosed double screws type ammonia refrigerating compressor |
| CN102536821A (en) * | 2012-02-29 | 2012-07-04 | 大连亿斯德制冷设备有限公司 | Semi-closed screw refrigerating compressor for ammonia |
| CN103233895A (en) * | 2013-05-11 | 2013-08-07 | 燕京啤酒(玉林)有限公司 | Rotary vane type vacuum pump discharge filtering mechanism |
| CN103711696A (en) * | 2013-12-29 | 2014-04-09 | 大连亿莱森玛机电有限公司 | Magnetic transmission screw refrigerating compressor |
| CN104329253A (en) * | 2014-09-18 | 2015-02-04 | 苏州欧能螺杆技术有限公司 | Efficient permanent magnet synchronous screw main-engine |
| CN105221418A (en) * | 2015-09-30 | 2016-01-06 | 耐驰（兰州）泵业有限公司 | A kind of magneto drive helical rotor pump |
| CN105221389A (en) * | 2015-10-20 | 2016-01-06 | 翟徐来 | A kind of external power compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080305 Termination date: 20100429 |