CN113847746B - High-power two-stage screw refrigerating unit - Google Patents
High-power two-stage screw refrigerating unit Download PDFInfo
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- CN113847746B CN113847746B CN202111120621.XA CN202111120621A CN113847746B CN 113847746 B CN113847746 B CN 113847746B CN 202111120621 A CN202111120621 A CN 202111120621A CN 113847746 B CN113847746 B CN 113847746B
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- installation
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
- F25B1/047—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type of screw type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/003—Filters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention provides a high-power two-stage screw refrigerating unit aiming at the defects of higher production cost and more complicated assembly of the refrigerating unit in the prior art, belonging to the technical field of refrigerating equipment, and comprising a compressor, wherein a low-pressure seat of the compressor is provided with an installation pipe which is integrally formed with the low-pressure seat, the installation pipe is internally and fixedly provided with an installation seat and a support ring which are integrally formed with the installation pipe, the support ring is provided with a cover ring, the installation seat is slidably connected with a valve core, and a first spring is arranged between the installation seat and the valve core; the upper end of the cover ring is provided with an annular groove, a filter element embedded in the annular groove is further arranged in the mounting pipe, the upper end of the mounting pipe is provided with a sealing cover, and a second spring is arranged in the sealing cover; the installation pipe lateral surface still fixedly connected with installation pipe integrated into one piece's intake pipe, intake pipe and installation pipe intercommunication. The invention does not need to be provided with an independent check valve and an independent filter, but is integrated in the low-pressure seat of the compressor, thereby reducing the production cost and simplifying the assembly process.
Description
Technical Field
The invention belongs to the technical field of refrigeration equipment, and particularly relates to a high-power two-stage screw refrigerating unit.
Background
The screw compressor is applied to commercial refrigerating unit at present in a large number, and among the current refrigerating unit, generally can be in the external check valve in the air inlet position of the low pressure seat of compressor, install a filter again, set up like this and need separately produce three independent part, can cause manufacturing cost higher, and when the equipment, need assemble compressor, check valve, the three part of filter earlier, assemble these three part together again for the assembling process is comparatively loaded down with trivial details.
Disclosure of Invention
The invention provides a high-power two-stage screw refrigerating unit aiming at the defects of higher production cost and more complicated assembly of refrigerating units in the prior art, the refrigerating unit is integrated in a low-pressure seat of a compressor without an independent one-way valve and an independent filter, the production cost can be reduced, and the assembly process is simplified.
The invention aims to be realized by the following technical scheme: a high-power two-stage screw refrigerating unit comprises a compressor, wherein an installation pipe which is integrally formed with a low pressure seat is arranged on the low pressure seat of the compressor, the installation pipe is communicated with an inner cavity of the low pressure seat, an installation seat and a support ring which are integrally formed with the installation pipe are fixedly arranged in the installation pipe, an air vent for ventilation is arranged between the installation seat and the inner wall of the installation pipe, a cover ring is detachably and fixedly connected onto the support ring, the support ring and the cover ring are both of an annular structure, the inner side edge of the cover ring is protruded relative to the inner side edge of the support ring, a valve core which can penetrate through the support ring and can be tightly pressed onto the cover ring to plug the hollow part of the cover ring is slidably connected onto the installation seat, a first spring which can tightly press the valve core onto the cover ring is also arranged between the installation seat and the valve core, and a gap is reserved between the valve core and the inner wall of the support ring; an annular groove is formed in one side, back to the support ring, of the cover ring, a filter element is further arranged in the installation pipe, one end of the filter element is embedded into the annular groove, an air inlet space arranged around the filter element is formed between the outer side surface of the filter element and the inner wall of the installation pipe, one end, back to the low-pressure seat, of the installation pipe is detachably and hermetically connected with a sealing cover, and a second spring for tightly pressing the filter element in the annular groove is arranged on the sealing cover; the installation pipe lateral surface still fixedly connected with installation pipe integrated into one piece's intake pipe, intake pipe and installation pipe intercommunication.
Preferably, the valve core comprises a plug, a guide rod is fixedly connected to the plug, a guide hole matched with the guide rod is formed in the mounting seat, and the guide rod is sleeved in the guide hole and can slide along the guide hole.
Preferably, the plug comprises a pressing plate capable of pressing the cover ring, the upper end face of the pressing plate is fixedly connected with a protrusion capable of being embedded into the hollow position of the cover ring, the outer side face of the protrusion is of a spherical structure, and the guide rod is vertically and fixedly arranged in the middle of the lower end face of the pressing plate. The plug of this arrangement has excellent sealing properties.
Preferably, the first spring is sleeved at the upper end of the mounting seat, one end of the first spring is tightly attached to the lower end face of the pressing plate, and the other end of the first spring is tightly pressed on the mounting seat.
Preferably, the inner side surface of the sealing cover is provided with a limiting groove, one end of the filter element, which is back to the annular groove, is embedded into the limiting groove, and the second spring is arranged in the limiting groove.
Preferably, the upper end of the filter element is provided with an inwards concave clamping groove, a handle fixed on the filter element is arranged in the clamping groove, and the second spring is sleeved on the handle. The handle can conveniently take up the filter element and can also be used for positioning the lower end of the second spring.
Preferably, the cover ring and the support ring are detachably and fixedly connected through bolts, and a gasket is arranged between the cover ring and the support ring.
Preferably, the outer end of the air inlet pipe is detachably and fixedly connected with a valve through a bolt.
Preferably, a sealing ring is arranged between the sealing cover and the mounting pipe, and the sealing cover is detachably mounted on the mounting pipe through a bolt.
Preferably, the mounting pipe is provided with at least two first detection through holes, the inner end of at least one first detection through hole is positioned between the support ring and the mounting seat, and the inner end of at least one first detection through hole is arranged towards the filter element; a second detection through hole is formed in the sealing cover, and the inner end of the second detection through hole is located in the limiting groove and communicated with the clamping groove; and plugging bolts are screwed in the first detection through hole and the second detection through hole.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, the independent one-way valve and the independent filter in the existing compressor are integrated in the low-pressure seat of the compressor, so that the production cost can be reduced, and the assembly process is simplified.
Drawings
FIG. 1 is a perspective view of a compressor in accordance with the present invention;
FIG. 2 is a perspective view of a low pressure seat portion of the compressor;
FIG. 3 is a cross-sectional view of a low pressure seat portion of the compressor;
FIG. 4 is an enlarged view taken at A in FIG. 3;
FIG. 5 is a schematic view of a valve cartridge;
FIG. 6 is a perspective view of the filter cartridge;
the labels in the figure are: 1. the compressor, 2, low-pressure seat, 3, installation pipe, 4, mount pad, 5, support ring, 6, air vent, 7, cover ring, 8, case, 9, clamp plate, 10, arch, 11, guide bar, 12, guiding hole, 13, first spring, 14, annular groove, 15, filter core, 16, the space of admitting air, 17, closing cap, 18, spacing groove, 19, second spring, 20, draw-in groove, 21, the intake pipe, 22, valve, 23, first detection through-hole, 24, second detection through-hole, 25, the shutoff bolt, 26, the handle.
Detailed Description
The invention will be further described with reference to examples of embodiments shown in the drawings to which:
example 1
As shown in fig. 1-6, a high-power two-stage screw refrigerating unit comprises a compressor 1, an installation pipe 3 integrally formed with a low-pressure seat 2 is arranged at the upper end of the low-pressure seat 2 of the compressor 1, the installation pipe 3 is communicated with the inner cavity of the low-pressure seat 2, an installation seat 4 and a support ring 5 integrally formed with the installation pipe 3 are fixedly arranged in the installation pipe 3, a vent hole 6 for ventilation is formed between the installation seat 4 and the inner wall of the installation pipe 3, a cover ring 7 is detachably and fixedly connected to the support ring 5 through a bolt, and a gasket is arranged between the cover ring 7 and the support ring 5. Support ring 5 and cover ring 7 all are ring structure and cover ring 7 inboard border for support ring 5 inboard border protrusion, sliding connection has the case 8 that can pass support ring 5 and can compress tightly terminal surface under cover ring 7 with the shutoff of cover ring 7 hollow portion on mount pad 4, case 8 includes the end cap, the end cap is including pressing the clamp plate 9 of terminal surface under the cover ring 7, the protruding 10 of clamp plate 9 up end fixedly connected with ability embedding cover ring 7 hollow position, the lateral surface of protruding 10 is the spherical structure, the perpendicular fixedly connected with guide bar 11 of terminal surface intermediate position under the clamp plate 9, mount pad 4 upper end is equipped with and guides 11 complex guiding hole 12, guide bar 11 cover is established in guiding hole 12 and can slide along guiding hole 12. A first spring 13 capable of pressing the valve core 8 on the cover ring 7 is further arranged between the mounting seat 4 and the valve core 8, and a gap is reserved between the valve core 8 and the inner wall of the support ring 5; the first spring 13 is sleeved at the upper end of the mounting seat 4, one end of the first spring 13 is tightly attached to the lower end face of the pressing plate 9, and the other end of the first spring is tightly pressed on the mounting seat 4.
One side that the cover ring 7 is back to support ring 5 is equipped with annular groove 14, still be equipped with filter core 15 in the installation pipe 3, the embedding of 15 one end of filter core in the annular groove 14, be equipped with between 15 lateral surfaces of filter core and the 3 inner walls of installation pipe around the air inlet space 16 that 15 set up of filter core, the one end of installation pipe 3 back to low-pressure seat 2 can be dismantled sealing connection and have a closing cap 17, be equipped with the sealing washer between closing cap 17 and the installation pipe 3, closing cap 17 passes through bolt demountable installation on installation pipe 3. The inner side surface of the sealing cover 17 is provided with a limiting groove 18, one end of the filter element 15, which is back to the annular groove 14, is embedded into the limiting groove 18, and a second spring 19, which compresses the filter element 15 in the annular groove 14, is arranged in the limiting groove 18 on the sealing cover 17. The upper end of the filter element 15 is provided with an inwards concave clamping groove 20, a lifting handle 26 fixed on the filter element 15 is arranged in the clamping groove 20, and the second spring 19 is sleeved on the lifting handle 26. 3 lateral surfaces of installation pipe still fixedly connected with the installation 3 integrated into one piece's of pipe intake pipe 21, intake pipe 21 and installation 3 intercommunications of pipe, fixedly connected with valve 22 can be dismantled through the bolt in the intake pipe 21 outer end.
The mounting tube 3 is provided with three first detection through holes 23, wherein the inner end of one first detection through hole 23 is positioned between the support ring 5 and the mounting seat 4, the other two first detection through holes 23 are positioned above the cover ring 7, and the inner ends of the other two first detection through holes are arranged towards the filter element 15; a second detection through hole 24 is formed in the sealing cover 17, and the inner end of the second detection through hole 24 is located in the limiting groove 18 and communicated with the limiting groove 20; plugging bolts 25 are screwed in the first detection through hole 23 and the second detection through hole 24. Sometimes need detect the refrigerating unit, at this moment, removable shutoff bolt 25 stretches into detection instrument such as manometer in the mounting tube from first detection through-hole 23, second detection through-hole 24 and detects.
According to the invention, a single one-way valve and a filter are not required to be arranged, the one-way valve and the filter are integrated in the low-pressure seat 2 of the compressor 1, the installation tube 3, the installation seat 4, the support ring 5 and the air inlet tube 21 are integrally cast and molded when the low-pressure seat 2 is cast, the lower end of the first spring 13 is sleeved at the upper end of the installation seat 4 during assembly, the valve core 8 is installed in the installation tube 3, the guide rod 11 on the valve core 8 is sleeved in the guide hole 12 on the installation seat 4, the cover ring 7 is installed in the installation tube 3 and fixedly installed on the support ring 5 through bolts, and at the moment, the assembly of the one-way valve part is completed. Then the filter element 15 is arranged in the installation pipe 3, the lower end of the filter element 15 is embedded in the annular groove 14 on the cover plate, the lower end of the second spring 19 is sleeved on a handle of the filter element 15, then the seal cover 17 is covered on the upper end of the installation pipe 3, the upper end of the filter element 15 and the upper end of the second spring 19 are both embedded in the limit groove 18 of the seal cover 17, the seal cover 17 is fixedly arranged at the upper end of the pipe by using bolts, and at this time, the assembly of the filter part is completed. And finally, the plugging bolt 25 is screwed in the first detection through hole 23 and the second detection through hole 24, so that the assembly process and the process are greatly simplified in the whole process, the assembly time can be shortened, and the production efficiency is improved. Meanwhile, the one-way valve and the filter are integrated on the low-pressure seat 2, so that the production cost can be reduced. A valve 22 may be bolted to the outer end of the inlet pipe 21 as required.
When the compressor 1 of the valve 22 operates, negative pressure is generated inside the low-pressure seat 2, external air can pass through the filter element 15 after passing through the installation pipe 3 from the air inlet pipe 21, the valve element 8 is pressed down by the air under the action of the negative pressure, a gap is formed between the valve element 8 and the cover ring 7, and the air enters the low-pressure seat 2 from the lower end of the installation pipe 3 through the gap between the valve element 8 and the cover ring 7. When the compressor 1 is stopped, the valve core 8 can block the lower end of the cover ring 7 again under the action of the first spring 13.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. A high-power two-stage screw refrigerating unit comprises a compressor and is characterized in that a mounting pipe which is integrally formed with a low pressure seat is arranged on the low pressure seat of the compressor, the mounting pipe is communicated with an inner cavity of the low pressure seat, a mounting seat and a supporting ring which are integrally formed with the mounting pipe are fixedly arranged in the mounting pipe, an air vent for ventilation is arranged between the mounting seat and the inner wall of the mounting pipe, a cover ring is detachably and fixedly connected onto the supporting ring, the supporting ring and the cover ring are both of an annular structure, the inner side edge of the cover ring protrudes relative to the inner side edge of the supporting ring, a valve core which can penetrate through the supporting ring and can be tightly pressed on the cover ring to plug the hollow part of the cover ring is slidably connected onto the mounting seat, a first spring which can tightly press the valve core onto the cover ring is arranged between the mounting seat and the valve core, and a gap is reserved between the valve core and the inner wall of the supporting ring;
an annular groove is formed in one side, back to the support ring, of the cover ring, a filter element is further arranged in the installation tube, one end of the filter element is embedded into the annular groove, an air inlet space arranged around the filter element is formed between the outer side surface of the filter element and the inner wall of the installation tube, one end, back to the low-pressure seat, of the installation tube is detachably and hermetically connected with a sealing cover, and a second spring for pressing the filter element in the annular groove is arranged on the sealing cover; the installation pipe lateral surface still fixedly connected with installation pipe integrated into one piece's intake pipe, intake pipe and installation pipe intercommunication.
2. The high-power dual-stage screw refrigerating unit according to claim 1, wherein the valve core comprises a plug, a guide rod is fixedly connected to the plug, a guide hole matched with the guide rod is formed in the mounting seat, and the guide rod is sleeved in the guide hole and can slide along the guide hole.
3. The high-power two-stage screw refrigerating unit according to claim 2, wherein the choke plug comprises a pressing plate which can be pressed on the cover ring, the upper end surface of the pressing plate is fixedly connected with a protrusion which can be embedded into the hollow position of the cover ring, the outer side surface of the protrusion is of a spherical structure, and the guide rod is vertically and fixedly arranged in the middle of the lower end surface of the pressing plate.
4. The high power dual-stage screw refrigerating unit according to claim 3, wherein the first spring is sleeved on the upper end of the mounting seat, one end of the first spring is tightly attached to the lower end surface of the pressing plate, and the other end of the first spring is tightly pressed on the mounting seat.
5. The high power dual-stage screw refrigerating unit according to claim 1, wherein the inner side of the cover is provided with a limiting groove, one end of the filter element facing away from the annular groove is embedded in the limiting groove, and the second spring is arranged in the limiting groove.
6. The high power dual-stage screw refrigerating unit according to claim 5, wherein the filter element is provided with an inward-concave clamping groove at the upper end, a handle fixed on the filter element is arranged in the clamping groove, and the second spring is sleeved on the handle.
7. The high power dual-stage screw refrigerating unit according to claim 1, wherein the cover ring is detachably and fixedly connected with the support ring through bolts, and a gasket is arranged between the cover ring and the support ring.
8. The high power dual-stage screw refrigerating unit according to claim 1, wherein the outer end of the air inlet pipe is detachably and fixedly connected with a valve through a bolt.
9. The high power dual-stage screw refrigerating unit according to claim 1, wherein a sealing ring is arranged between the sealing cover and the mounting tube, and the sealing cover is detachably mounted on the mounting tube through a bolt.
10. The high-power dual-stage screw refrigerating unit according to claim 6, wherein the mounting tube is provided with at least two first detection through holes, the inner end of at least one first detection through hole is located between the support ring and the mounting seat, and the inner end of at least one first detection through hole is arranged towards the filter element; a second detection through hole is formed in the sealing cover, and the inner end of the second detection through hole is located in the limiting groove and communicated with the clamping groove; and plugging bolts are screwed in the first detection through hole and the second detection through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111120621.XA CN113847746B (en) | 2021-09-24 | 2021-09-24 | High-power two-stage screw refrigerating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111120621.XA CN113847746B (en) | 2021-09-24 | 2021-09-24 | High-power two-stage screw refrigerating unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113847746A CN113847746A (en) | 2021-12-28 |
| CN113847746B true CN113847746B (en) | 2023-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111120621.XA Active CN113847746B (en) | 2021-09-24 | 2021-09-24 | High-power two-stage screw refrigerating unit |
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| CN (1) | CN113847746B (en) |
Citations (2)
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| CN101476575A (en) * | 2009-01-06 | 2009-07-08 | 费斯托(中国)有限公司 | Gas circuit block of integrated leading control one-way valve |
| CN111038216A (en) * | 2019-12-30 | 2020-04-21 | 华域三电汽车空调有限公司 | Valve body integrated module and heat pump air conditioning system |
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| JP3243946B2 (en) * | 1994-10-19 | 2002-01-07 | 北越工業株式会社 | Oil-cooled rotary compressor |
| US6692234B2 (en) * | 1999-03-22 | 2004-02-17 | Water Management Systems | Pump system with vacuum source |
| JP4211477B2 (en) * | 2003-05-08 | 2009-01-21 | 株式会社豊田自動織機 | Oil separation structure of refrigerant compressor |
| JP2009079538A (en) * | 2007-09-26 | 2009-04-16 | Calsonic Compressor Inc | Variable displacement gas compressor |
| CN100529410C (en) * | 2007-11-27 | 2009-08-19 | 无锡压缩机股份有限公司 | Multifunctional pile-up valve of helical lobe compressor gas path system |
| CN201133568Y (en) * | 2007-11-27 | 2008-10-15 | 无锡压缩机股份有限公司 | Helical lobe compressor gas circuit system multifunctional integrated valve |
| CN202250869U (en) * | 2011-09-08 | 2012-05-30 | 上海维尔泰克螺杆机械有限公司 | Gas circuit control system of screw compressor |
| JP6082300B2 (en) * | 2013-03-29 | 2017-02-15 | 北越工業株式会社 | Compressor air intake structure |
| CN206889260U (en) * | 2017-04-20 | 2018-01-16 | 江西津大新材料有限公司 | A kind of spiral type air compressor |
| CN107288855B (en) * | 2017-06-07 | 2019-09-13 | 浙江科力车辆控制系统有限公司 | Multifunctional air filtering device |
| CN207500557U (en) * | 2017-11-30 | 2018-06-15 | 大连埃斯流体技术有限公司 | A kind of unitized filter check valve |
| CN207583630U (en) * | 2017-12-14 | 2018-07-06 | 浙江沃克制冷设备有限公司 | A kind of screw refrigeration unit |
| CN210484072U (en) * | 2019-08-27 | 2020-05-08 | 宁波鲍斯能源装备股份有限公司 | Integrated form helical-lobe compressor |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476575A (en) * | 2009-01-06 | 2009-07-08 | 费斯托(中国)有限公司 | Gas circuit block of integrated leading control one-way valve |
| CN111038216A (en) * | 2019-12-30 | 2020-04-21 | 华域三电汽车空调有限公司 | Valve body integrated module and heat pump air conditioning system |
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| CN113847746A (en) | 2021-12-28 |
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