CN102678562A - Double sliding valve internal volumetric ratio stepless adjusting device for single-screw refrigeration compressor - Google Patents
Double sliding valve internal volumetric ratio stepless adjusting device for single-screw refrigeration compressor Download PDFInfo
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- CN102678562A CN102678562A CN2012101821459A CN201210182145A CN102678562A CN 102678562 A CN102678562 A CN 102678562A CN 2012101821459 A CN2012101821459 A CN 2012101821459A CN 201210182145 A CN201210182145 A CN 201210182145A CN 102678562 A CN102678562 A CN 102678562A
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Abstract
The invention creates and provides a double sliding valve internal volumetric ratio stepless adjusting device for a single-screw refrigeration compressor. A compressor body, suction and exhaust end seats and end covers at the two ends are arranged in a casing; a screw rotor in the compressor body is meshed with two symmetrically arranged star wheels; a spiral groove on the screw rotor, the inner wall of the compressor body and star wheel piece tooth surfaces form a closed primitive volume; a volume adjusting sliding valve and an internal volumetric ratio adjusting sliding valve are arranged on the inner wall of the compressor body; the volume adjusting sliding valve and the internal volumetric ratio adjusting sliding valve adopt parallel structures and are arranged in parallel on the two sides of the screw rotor; and the volume adjusting sliding valve and the internal volumetric ratio adjusting sliding valve are connected with a driving device of a sliding valve at the outer part of the compressor body and an indication device of the sliding valve respectively through a volume adjusting sliding valve pull rod and an internal volumetric ratio adjusting sliding valve pull rod. The device gives full play to the advantages of the internal volumetric ratio adjustment technology and the compressor energy and stepless adjustment technology, and keeps the internal and external pressure ratio of the compressor equal under any environmental working condition and at any energy level, thereby keeping the performance of the compressor optimal.
Description
Technical field
The invention relates to a kind of compressor, and particularly a kind of single Spiral Lobe Refrigeration Compressor double slide valve interior volume specific ratio stepless adjustment device is used to regulate the interior volume specific ratio of compressor, realizes that the inner pressure ratio of compressor and outer pressure ratio are equal.
Background technique
Energy-conservation and environmental protection are the directions that the refrigeration technology development will be followed all the time, and therefore water resource heat pump has become the air conditioner refrigerating technology of main flow owing to can extract cooling and the heating that energy be used for building efficiently from various water sources at present.
The water source heat pump units of current extensive use generally has refrigeration and heats two kinds of operating modes.With the groundwater source heat pump is example, and the evaporation/condensation temperature of cooling condition is generally got 2/34 ℃; The evaporation/condensation temperature of heating condition is generally got 3/50 ℃.And the compressor that the is applied in this occasion long-pending ratio that mostly is immobilized substance, general content is long-pending than optional 2.2 or 3.0.Will cause in the running of compressor, will often occurring overcompression and the under-voltage operating mode that contracts like this; And the under-voltage still overcompression of contracting all can reduce because of the isentropic efficiency of compression process and the operational efficiency of compressor is reduced; The inner pressure ratio of compressor differs big more with outer pressure ratio, and the operational efficiency of compressor and the difference of its optimum efficiency are also big more.
In addition; The twin-screw refrigeration compressor that has minority system to be applied to handpiece Water Chilling Units and water source heat pump units has disposed a grade interior volume specific ratio controlling device; With the variation that reduces the compressor application environmental working condition influence to compressor efficiency; Because the structural feature of double-screw compressor, its interior volume specific ratio stepless regulator is 2 guiding valve cascaded structures.Interior volume specific ratio has level to regulate can not to guarantee in the inside and outside pressure ratio of the operation energy level scope inner compressor of most of operating modes and compressor equal all the time, so this has grade interior volume specific ratio controlling device limited to the lifting effect of compressor operating efficient.
To sum up, the current water source heat pumps and chillers used in refrigeration compressors are mostly single and double Yin rod volume ratio adjusting device because no content or just configured with class content volume ratio adjusting device and not well adapted to water source heat pumps and other environmental conditions change relatively large application environment to Pei, leading to configure the water source heat pump compressor Although energy efficiency in laboratory tests than Gao, but in the actual operation of the energy-saving effect is not obvious, thus affecting the energy-efficient water source heat pump technologies.
Summary of the invention
The purpose of the invention provides a kind of single Spiral Lobe Refrigeration Compressor double slide valve interior volume specific ratio stepless adjustment device; Overcome the deficiency of above-mentioned prior art; Give full play to the advantage of interior volume specific ratio Technology of stepless and compression function and Technology of stepless; Make the inside and outside pressure ratio of compressor under any environmental working condition, any energy level, can both keep equal, thereby make the performance of compressor remain at optimum level.
The technological scheme of the invention: single Spiral Lobe Refrigeration Compressor double slide valve interior volume specific ratio stepless adjustment device; Casing contains body, suction and discharge end seat and two ends end cap; The wherein star-wheel of a screw rotor and two symmetric arrangement engagement in the body; Spiral chute on the screw rotor, body inwall and spider piece flank of tooth three constitute the element volume of sealing; On the body inwall, be provided with to hold and transfer guiding valve and interior volume specific ratio regulating slide valve; Hold and transfer guiding valve and interior volume specific ratio regulating slide valve to adopt the parallel-connection structure parallel arrangement, and hold and transfer guiding valve to transfer the guiding valve pull bar to be connected with the drive unit of the guiding valve of engine body exterior and the indicating device of guiding valve through holding respectively with interior volume specific ratio regulating slide valve pull bar with the interior volume specific ratio regulating slide valve in the both sides of screw rotor.
The drive unit of said guiding valve adopts electromagnetic valve oil piston structure; Its structure is: be provided with dividing plate in the guiding valve control oil cylinder; Dividing plate is divided into two cavitys, is provided with in the cavity to hold to transfer the guiding valve piston, is provided with interior volume specific ratio regulating slide valve piston in another cavity; Connecting rod on the appearance accent guiding valve piston passes dividing plate and transfers guiding valve to be connected the crossbeam connection with appearance; Appearance transfers guiding valve pull bar and appearance accent guiding valve to be connected the crossbeam connection and to transfer the connecting rod keeping parallelism on the guiding valve piston with appearance, and the connecting rod on appearance accent guiding valve pull bar and the appearance accent guiding valve piston is positioned at jointly and holds the side that the accent guiding valve is connected crossbeam, and the opposite side of appearance accent guiding valve connection crossbeam is connected with the indicating device of guiding valve; Connecting rod on the interior volume specific ratio regulating slide valve piston passes dividing plate and is connected the crossbeam connection with the interior volume specific ratio regulating slide valve; Interior volume specific ratio regulating slide valve pull bar with hold to transfer guiding valve is connected the crossbeam connection and with interior volume specific ratio regulating slide valve piston on the connecting rod keeping parallelism; Interior volume specific ratio regulating slide valve pull bar is positioned at jointly with connecting rod on the interior volume specific ratio regulating slide valve piston and holds a side of transferring guiding valve to be connected crossbeam, holds and transfers the opposite side of guiding valve connection crossbeam to be connected with the indicating device of guiding valve; Guiding valve control oil cylinder is provided with fuel feeding and oil returning tube outward; Fuel feeding and oil returning tube are provided with solenoid valve; Solenoid valve is connected with the outer control circuit; Wherein hold and recall to solenoid and transfer the fuel feeding solenoid valve being connected in parallel with holding, the one of which end communicates with being provided with the cavity that holds accent guiding valve piston through oil supply hole, and the other end communicates with low pressure chamber on the body through the draining hole; Interior volume specific ratio is regulated oil return solenoid valve and is connected in parallel with interior volume specific ratio adjusting fuel feeding solenoid valve, and the one of which end communicates with the cavity that is provided with interior volume specific ratio regulating slide valve piston through oil supply hole, and the other end communicates with low pressure chamber on the body through the draining hole.
The indicating device of said guiding valve adopts rotating coder; Rotating coder comprises holding transfers rotating coder and interior volume specific ratio rotating coder; Appearance accent rotating coder is connected crossbeam through appearance accent screw rod and interior volume specific ratio adjusting color screw bar and appearance accent guiding valve respectively with the interior volume specific ratio rotating coder and is connected the crossbeam connection with the interior volume specific ratio regulating slide valve; Hold and transfer rotating coder to be provided with appearance accent pointer; The interior volume specific ratio rotating coder is provided with interior volume specific ratio and regulates pointer; Hold the periphery of transferring screw rod and interior volume specific ratio adjusting color screw bar and be respectively equipped with appearance accent sliding sleeve and interior volume specific ratio adjusting sliding sleeve, hold and transfer the inside of sliding sleeve and interior volume specific ratio adjusting sliding sleeve to be separately installed with Returnning spring.
The beneficial effect of the invention:
1. interior volume specific ratio stepless regulator that should list spiral shell pavilion refrigeration compressor is two pairs of guiding valve parallel-connection structures; Wherein the interior volume specific ratio regulating slide valve is used to regulate the size of relief opening; Hold the volume flowrate of transferring guiding valve to be used to regulate compressor; The inside and outside pressure ratio that can really realize compressor like this under any operating mode of compressor, all keep under any energy level equating, thereby make compressor operate in the optimum efficiency state all the time;
2. adopt the screw rod structure to transfer the interior volume specific ratio guiding valve straight-line displacement of guiding valve to transform angled variation with holding, help making the structure compact of compressor like this, stable and reliable operation;
3. adopt two angular displacement sensors; Promptly hold and transfer rotating coder and interior volume specific ratio rotating coder; Be used for transferring the real time position of guiding valve to change into curtage signal input PLC in interior volume specific ratio guiding valve and energy level appearance; So that carry out the computational process monitoring of compressor interior volume specific ratio and energy level, feasible interior volume specific ratio to compressor has high control precision.
Description of drawings
Fig. 1 is the structural representation of the invention.
Fig. 2 analyses and observe view for the A-A of Fig. 1.
Fig. 3 is the structural representation of the indicating device of guiding valve in the invention.
Fig. 4 is the working principle schematic representation of the invention.
Embodiment
As depicted in figs. 1 and 2; Single Spiral Lobe Refrigeration Compressor double slide valve interior volume specific ratio stepless adjustment device; Casing contains body 3, suction and discharge end seat and two ends end cap; The wherein star-wheel of body 3 interior screw rotors 2 and two symmetric arrangement engagement; Spiral chute on the screw rotor 2, body inwall and spider piece flank of tooth three constitute the element volume of sealing; On the body inwall, be provided with appearance accent guiding valve 1 and interior volume specific ratio regulating slide valve 26, hold and transfer guiding valve 1 and interior volume specific ratio regulating slide valve 26 employing parallel-connection structure parallel arrangements, and hold and transfer guiding valve 1 to be connected with the drive unit of the guiding valve of body 3 outsides and the indicating device of guiding valve with interior volume specific ratio regulating slide valve pull bar 22 through holding accent guiding valve pull bar 7 respectively with interior volume specific ratio regulating slide valve 26 in the both sides of screw rotor 2.
The drive unit of said guiding valve adopts electromagnetic valve oil piston structure; Its structure is: be provided with dividing plate 23 in the guiding valve control oil cylinder 24; Dividing plate 23 is divided into two cavitys; Be provided with in the cavity to hold and transfer guiding valve piston 8; Be provided with interior volume specific ratio regulating slide valve piston 21 in another cavity, hold transfer connecting rod on the guiding valve piston 8 to pass dividing plate 23 and transfer guiding valve to be connected crossbeam 14 to connect with holding, hold transfer guiding valve pull bar 7 with hold transfer guiding valve be connected crossbeam 14 connections and with appearance accent guiding valve piston 8 on the connecting rod keeping parallelism; Appearance is transferred guiding valve pull bar 7 and is held the connecting rod of transferring on the guiding valve piston 8 and is positioned at the side that appearance accent guiding valve is connected crossbeam 14 jointly, holds the opposite side of transferring guiding valve to connect crossbeam 14 and is connected with the indicating device of guiding valve; Connecting rod on the interior volume specific ratio regulating slide valve piston 21 passes dividing plate 23 and is connected crossbeam 15 connections with the interior volume specific ratio regulating slide valve; Interior volume specific ratio regulating slide valve pull bar 22 with hold to transfer guiding valve is connected crossbeam 15 connections and with interior volume specific ratio regulating slide valve piston 21 on the connecting rod keeping parallelism; Interior volume specific ratio regulating slide valve pull bar 22 is positioned at jointly with connecting rod on the interior volume specific ratio regulating slide valve piston 21 and holds a side of transferring guiding valve to be connected crossbeam 15, holds and transfers the opposite side of guiding valve connection crossbeam 15 to be connected with the indicating device of guiding valve; Guiding valve control oil cylinder 24 outer fuel feeding and the oil returning tubes of being provided with; Fuel feeding and oil returning tube are provided with solenoid valve; Solenoid valve is connected with the outer control circuit; Wherein hold and recall to solenoid 17 and transfer fuel feeding solenoid valve 18 being connected in parallel with holding, the one of which end communicates with being provided with the cavity that holds accent guiding valve piston 8 through oil supply hole 16, and the other end communicates with low pressure chamber on the body 3 through draining hole 25; Interior volume specific ratio is regulated oil return solenoid valve 20 and is regulated fuel feeding solenoid valve 19 with interior volume specific ratio and be connected in parallel, and the one of which end communicates with the cavity that is provided with interior volume specific ratio regulating slide valve piston 21 through oil supply hole 16, and the other end communicates with low pressure chamber on the body 3 through draining hole 25.
As shown in Figure 3; The indicating device of said guiding valve adopts rotating coder 12; Rotating coder 12 comprises holding transfers rotating coder 40 and interior volume specific ratio rotating coder 44; Appearance accent rotating coder 40 is connected crossbeam 14 through appearance accent screw rod 11 and interior volume specific ratio adjusting color screw bar 13 and appearance accent guiding valve respectively with interior volume specific ratio rotating coder 44 and is connected crossbeam 15 connections with the interior volume specific ratio regulating slide valve; Hold and transfer rotating coder 40 to be provided with appearance accent pointer 41; Interior volume specific ratio rotating coder 44 is provided with interior volume specific ratio and regulates pointer 43, and the periphery of holding accent screw rod 11 and interior volume specific ratio adjusting color screw bar 13 is respectively equipped with to hold transfers sliding sleeve 38 and interior volume specific ratio adjusting sliding sleeve 45, holds the inside of transferring sliding sleeve 38 and interior volume specific ratio to regulate sliding sleeve 45 and is separately installed with Returnning spring 39,46.
Working principle: as shown in Figure 4, interior volume specific ratio regulating slide valve 26 has changed the size of relief opening 33 when 1-2 move to 1 '-2 ', so can not change the compressor energy level because of the position that changes sealing helix 36; Hold to transfer guiding valve 1 when 3-4 move to 3 '-4 ', owing to only changed the size of huge system outlet valve 37, promptly carry out energy level and regulate, thereby can not change the size of relief opening 33 through the position that changes sealing helix 36.When the energy level of compressor is regulated, can obtain a suitable interior volume specific ratio like this, the inner pressure ratio of compressor is equated with outer pressure ratio, thereby guarantee the efficient operation of compressor through the adjusting of interior volume specific ratio regulating slide valve 26 positions.
Claims (3)
1. single Spiral Lobe Refrigeration Compressor double slide valve interior volume specific ratio stepless adjustment device; Casing contains body (3), suction and discharge end seat and two ends end cap; Wherein the interior screw rotor of body (3) (2) meshes with the star-wheel of two symmetric arrangement; Spiral chute on the screw rotor (2), body inwall and spider piece flank of tooth three constitute the element volume of sealing; It is characterized in that: on the body inwall, be provided with to hold and transfer guiding valve (1) and interior volume specific ratio regulating slide valve (26); Appearance transfers guiding valve (1) and interior volume specific ratio regulating slide valve (26) to adopt the parallel-connection structure parallel arrangement in the both sides of screw rotor (2), and holds and transfer guiding valve (1) to transfer the drive unit of the outside guiding valve of guiding valve pull bar (7) and interior volume specific ratio regulating slide valve pull bar (22) and body (3) and the indicating device of guiding valve to be connected through appearance respectively with interior volume specific ratio regulating slide valve (26).
2. a kind of single Spiral Lobe Refrigeration Compressor double slide valve interior volume specific ratio stepless adjustment device as claimed in claim 1; It is characterized in that; The drive unit of said guiding valve adopts electromagnetic valve oil piston structure; Its structure is: be provided with dividing plate (23) in the guiding valve control oil cylinder (24); Dividing plate (23) is divided into two cavitys, is provided with in the cavity to hold to transfer guiding valve piston (8), is provided with interior volume specific ratio regulating slide valve piston (21) in another cavity; Connecting rod on the appearance accent guiding valve piston (8) passes dividing plate (23) and transfers guiding valve to be connected crossbeam (14) connection with appearance; Appearance transfers guiding valve pull bar (7) and appearance accent guiding valve to be connected crossbeam (14) connection and to transfer the connecting rod keeping parallelism on the guiding valve piston (8) with appearance, and the connecting rod on appearance accent guiding valve pull bar (7) and the appearance accent guiding valve piston (8) is positioned at jointly and holds the side that the accent guiding valve is connected crossbeam (14), and the opposite side of appearance accent guiding valve connection crossbeam (14) is connected with the indicating device of guiding valve; Connecting rod on the interior volume specific ratio regulating slide valve piston (21) passes dividing plate (23) and is connected crossbeam (15) connection with the interior volume specific ratio regulating slide valve; Interior volume specific ratio regulating slide valve pull bar (22) with hold to transfer guiding valve is connected crossbeam (15) connection and with interior volume specific ratio regulating slide valve piston (21) on the connecting rod keeping parallelism; Interior volume specific ratio regulating slide valve pull bar (22) is positioned at jointly with connecting rod on the interior volume specific ratio regulating slide valve piston (21) and holds a side of transferring guiding valve to be connected crossbeam (15), holds and transfers the opposite side of guiding valve connection crossbeam (15) to be connected with the indicating device of guiding valve; Outer fuel feeding and the oil returning tube of being provided with of guiding valve control oil cylinder (24); Fuel feeding and oil returning tube are provided with solenoid valve; Solenoid valve is connected with the outer control circuit; Wherein hold and recall to solenoid (17) and transfer fuel feeding solenoid valve (18) being connected in parallel with holding, the one of which end communicates with the cavity that is provided with appearance accent guiding valve piston (8) through oil supply hole (16), and the other end communicates with low pressure chamber on the body (3) through draining hole (25); Interior volume specific ratio regulates oil return solenoid valve (20) and interior volume specific ratio adjusting fuel feeding solenoid valve (19) is connected in parallel; The one of which end communicates with the cavity that is provided with interior volume specific ratio regulating slide valve piston (21) through oil supply hole (16), and the other end communicates with low pressure chamber on the body (3) through draining hole (25).
3. a kind of single Spiral Lobe Refrigeration Compressor double slide valve interior volume specific ratio stepless adjustment device as claimed in claim 1; It is characterized in that: the indicating device of said guiding valve adopts rotating coder (12); Rotating coder (12) comprises holding transfers rotating coder (40) and interior volume specific ratio rotating coder (44); Appearance accent rotating coder (40) is connected crossbeam (14) through appearance accent screw rod (11) and interior volume specific ratio adjusting color screw bar (13) and appearance accent guiding valve respectively with interior volume specific ratio rotating coder (44) and is connected crossbeam (15) connection with the interior volume specific ratio regulating slide valve; Hold and transfer rotating coder (40) to be provided with appearance accent pointer (41); Interior volume specific ratio rotating coder (44) is provided with interior volume specific ratio and regulates pointer (43); Hold the periphery of transferring screw rod (11) and interior volume specific ratio adjusting color screw bar (13) and be respectively equipped with appearance accent sliding sleeve (38) and interior volume specific ratio adjusting sliding sleeve (45), hold and transfer the inside of sliding sleeve (38) and interior volume specific ratio adjusting sliding sleeve (45) to be separately installed with Returnning spring (39), (46).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210182145.9A CN102678562B (en) | 2012-06-05 | 2012-06-05 | Double sliding valve internal volumetric ratio stepless adjusting device for single-screw refrigeration compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210182145.9A CN102678562B (en) | 2012-06-05 | 2012-06-05 | Double sliding valve internal volumetric ratio stepless adjusting device for single-screw refrigeration compressor |
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| CN102678562A true CN102678562A (en) | 2012-09-19 |
| CN102678562B CN102678562B (en) | 2015-06-17 |
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| CN201210182145.9A Active CN102678562B (en) | 2012-06-05 | 2012-06-05 | Double sliding valve internal volumetric ratio stepless adjusting device for single-screw refrigeration compressor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104494A (en) * | 2012-11-15 | 2013-05-15 | 福建雪人压缩机科技有限公司 | Indication device of adjustable position of refrigeration screw compressor |
| CN105508243A (en) * | 2016-01-19 | 2016-04-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Single-screw compressor |
| CN107524599A (en) * | 2017-10-13 | 2017-12-29 | 苏州利森空调制冷有限公司 | Single screw compressor internal volume rate regulating mechanism |
| CN108468643A (en) * | 2018-05-18 | 2018-08-31 | 麦克维尔空调制冷(武汉)有限公司 | It can determine the screw compressor capacity control system and method for the operation of frequency speed-changing |
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| CN202673688U (en) * | 2012-06-05 | 2013-01-16 | 阜新金昊空压机有限公司 | Double slide valve inner volume ratio stepless regulating device of single-screw refrigerating compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104494A (en) * | 2012-11-15 | 2013-05-15 | 福建雪人压缩机科技有限公司 | Indication device of adjustable position of refrigeration screw compressor |
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| CN107524599A (en) * | 2017-10-13 | 2017-12-29 | 苏州利森空调制冷有限公司 | Single screw compressor internal volume rate regulating mechanism |
| CN108468643A (en) * | 2018-05-18 | 2018-08-31 | 麦克维尔空调制冷(武汉)有限公司 | It can determine the screw compressor capacity control system and method for the operation of frequency speed-changing |
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