CN202928186U - A double-oil level switch parallel-connection screw compressor condensing unit - Google Patents
A double-oil level switch parallel-connection screw compressor condensing unit Download PDFInfo
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- CN202928186U CN202928186U CN 201220688685 CN201220688685U CN202928186U CN 202928186 U CN202928186 U CN 202928186U CN 201220688685 CN201220688685 CN 201220688685 CN 201220688685 U CN201220688685 U CN 201220688685U CN 202928186 U CN202928186 U CN 202928186U
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Abstract
The utility model discloses a double-oil level switch parallel-connection screw compressor condensing unit and relates to refrigeration technology. An oil supply system of a conventional parallel-connection screw compressor condensing unit relies on oil supply of an external oil circuit completely, so that oil supply pipelines are complex, too many control valves and detection parts are installed, filth blockage occurs frequently, the system requires large-volume oil separators and the quantity of filled lubricating oil is large. The double-oil level switch parallel-connection screw compressor condensing unit is characterized in that screw compressors are provided with primary oil separators inside and are provided with high-oil level and low-oil level switches, and loading, unloading, lubricating and sealing of the compressors are realized through oil supply of an internal oil tank. When the high-oil level switch of a compressor is turned off, an oil return control solenoid valve between a secondary oil separator and the compressor is started for topping-up of oil of the compressor, so that the oil in the oil tank in the compressor is maintained at a normal level; and the low-oil level switches are used for halt protection of the compressors in oil shortage, so that the continuous reliable operation of the compressors is guaranteed.
Description
Technical field
The utility model belongs to Refrigeration Technique, specifically a kind of pair of oil level switch screw parallel formula Condensing units.
Background technology
Some assemblies that screw compressor is simple in structure, do not have piston compressor, as: piston, piston ring, valve block, oil pump and mechanical link.The screw compressor of having cancelled these assemblies has the characteristics of low noise, low vibration, high efficiency and high-durability.Therefore, the application of screw compressor on Condensing units is more and more, large cold unit is because of many-sided requirements such as unit energy adjustment, reliabilities, often adopt the Multi-compressor parallel design, how resolving the fuel feeding problem of each compressor, is the key point that guarantees screw parallel formula Condensing units reliability.
Present stage, the common practice of screw parallel formula Condensing units was: adopt and a plurality ofly do not carry out parallel connection with the helical-lobe compressor of oil content, fuel tank, oil level switch, enter common oil eliminator through the HTHP oil gas mixture of overcompression by the common exhaust pipe road, the refrigeration oil that separates enters to the outside oil-feed port of compressor through total oil path valve, thick oil strainer, a way solenoid valve, a road binders flow switch, branch road oil circuit visor, branch road shut-off valve, whether the switch that props up way solenoid valve according to the on off control of compressor determines to compressor oil-supplying.This oil supply system is fully by outside oil circuit fuel feeding, and oil feed line is complicated, control valve member, detection part is various, and very easily occurs dirty stifledly, and system need to configure the large volume oil eliminator and the lubricating oil charging amount is large.Stayed very large hidden danger and be unfavorable for controlling cost for to a great extent the reliability of unit.
The utility model content
The technical assignment of the technical problems to be solved in the utility model and proposition is to overcome existing screw parallel formula Condensing units oil supply system fully by outside oil circuit fuel feeding, oil feed line is complicated, control valve member, detection part is various, be prone to dirty stifled, system need to configure large volume oil eliminator and the large defective of lubricating oil charging amount, and a kind of pair of oil level switch screw parallel formula Condensing units is provided.
for this reason, the of the present utility model pair of oil level switch screw parallel formula Condensing units is by the screw compressor of parallel connection, secondary oil separator, magnetic valve is controlled in oil return, condenser, reservoir and device for drying and filtering form, the outlet of described screw compressor is surveyed successively and described secondary oil separator, condenser, reservoir, device for drying and filtering connects, described secondary oil separator also controls through described oil return the import survey that magnetic valve connects described screw compressor, it is characterized in that: the built-in oil eliminator of described screw compressor, on described screw compressor, setting tool has a high position, two oil level switch of low level.
As the optimization technique means, the both sides of described device for drying and filtering are connected with valve, and the import of described screw compressor is surveyed and is connected with valve.
As the optimization technique means, described screw compressor, two oil level switch, secondary oil separator, oil return are controlled the direct assembly unit of magnetic valve, condenser, reservoir and device for drying and filtering and are consisted of an integral body.Perhaps, the part that described screw compressor, two oil level switch, secondary oil separator, oil return are controlled in magnetic valve, condenser, reservoir and device for drying and filtering is carried out direct assembly unit, then connects and composes an integral body by pipeline.
As the optimization technique means, described condenser is a kind of in water-cooled shell and tube condenser, air cooling fin formula condenser, evaporative condenser.
As the optimization technique means, described screw compressor is totally-enclosed compressor or semi-closed compressor.
As the optimization technique means, described screw compressor is a kind of in single screw compressor, double-screw compressor, three helical-lobe compressors.
As the optimization technique means, the described pair of oil level switch be the integral type oil level switch controlled with dibit or by two independently oil level switch form.
As the optimization technique means, described pair of oil level switch is float-ball type oil level switch or photo-electric oil level switch.
The beneficial effects of the utility model are: by at the built-in oil eliminator of screw compressor, on compressor, setting tool has the dibit oil circuit breaker of a high position, low level, make compressor add unloading, lubricated, sealing realizes by the inner tank fuel feeding, when the high oil level switch of compressor disconnects, by the oil return control magnetic valve of opening between secondary oil separator and compressor, compressor is carried out repairing, the oil level of keeping in compressor sump is in normal oil level.The low oil level switch is used for compressor oil starvation stoppage protection, thereby guarantees that compressor continues reliability service.Well having solved the parallel Condensing units of conventional screw adopts and a plurality ofly whether does not determine that according to the start and stop of compressor the oil feed line that exists to compressor oil-supplying is complicated, control valve member, detection part is various when not carrying out parallel connection with the helical-lobe compressor of oil content, fuel tank, oil level switch, and very easily occur dirty stifledly, system need to configure the large volume oil eliminator and the problem such as the lubricating oil charging amount is large.
Description of drawings
Fig. 1 is the principle schematic of of the present utility model pair of oil level switch screw parallel formula Condensing units;
Of the present utility model pair of oil level switch structure of Fig. 2 and principle schematic;
Fig. 3 repairing control principle of the present utility model schematic diagram;
Number in the figure explanation: the 1-screw compressor, the two oil level switch of 2-, the 3-secondary oil separator, magnetic valve is controlled in the 4-oil return, the 5-condenser, the 6-reservoir, the 7-device for drying and filtering, 8-client surveys evaporimeter, the high oil level of H-control point, L-low oil level control point.
The specific embodiment
Below in conjunction with Figure of description, the utility model is described further.
of the present utility model pair of oil level switch screw parallel formula Condensing units, as shown in Figure 1, it is by the screw compressor 1 of parallel connection, secondary oil separator 3, magnetic valve 4 is controlled in oil return, condenser 5, reservoir 6 and device for drying and filtering 7 form, the outlet of screw compressor 1 is surveyed successively and secondary oil separator 3, condenser 5, reservoir 6, device for drying and filtering 7 connects, secondary oil separator 3 is also controlled the import survey of magnetic valve 4 connecting screw rod formula compressors 1 through oil return, the built-in oil eliminator of screw compressor 1, on screw compressor 1, setting tool has a high position, two oil level switch 2 of low level.
As further improving and replenishing technique scheme, the utility model also comprises following additional technical characterictic, although Fig. 1 has comprised following all additional technical features, it is preferred embodiment of the present utility model, but the utility model is not limited to this situation, they is selected on the described technical scheme of epimere according to specifically acting on when implementing the utility model.
At first, the both sides of device for drying and filtering 1 are connected with valve, and the import of screw compressor is surveyed and is connected with valve.
Secondly, integral body of the direct assembly unit formation of magnetic valve, condenser, reservoir and device for drying and filtering is controlled in screw compressor, two oil level switch, secondary oil separator, oil return.Perhaps, the part that screw compressor, two oil level switch, secondary oil separator, oil return are controlled in magnetic valve, condenser, reservoir and device for drying and filtering is carried out direct assembly unit, then connects and composes an integral body by pipeline.
The 3rd, condenser is a kind of in water-cooled shell and tube condenser, air cooling fin formula condenser, evaporative condenser.
The 4th, screw compressor is totally-enclosed compressor or semi-closed compressor.
The 5th, screw compressor is a kind of in single screw compressor, double-screw compressor, three helical-lobe compressors.
The 6th, two oil level switch be the integral type oil level switch controlled with dibit or by two independently oil level switch form.
The 7th, two oil level switch are float-ball type oil level switch or photo-electric oil level switch.
As shown in Figure 1: screw compressor 1 inlet flow that is connected in parallel is from the low-temperature low-pressure refrigerant steam of customer side evaporimeter 8, steam is carried out becoming after work done is compressed the superheated vapor of HTHP, enter to secondary oil separator 3 by exhaust main and carry out Oil-gas Separation, the refrigerant vapour of high pressure-temperature enters condenser 5 and carries out condensation afterwards, make gaseous refrigerant be condensed into highly pressurised liquid, and deliver to after the reservoir 6 of flowing through, device for drying and filtering 7 and enter evaporimeter after the throttling of customer side expansion valve and carry out the heat exchange evaporation.The refrigeration oil that process secondary oil separator 3 separates is controlled magnetic valve 4 by oil return and is delivered to screw compressor 1, and so forth circulation.
Of the present utility model pair of oil level switch screw parallel formula Condensing units, the built-in oil eliminator of the screw compressor of employing, on compressor, setting tool has two oil level switch 2 of a high position, low level.Compressor add unloading, lubricated, sealing realizes by the inner tank fuel feeding, when the high oil level switch of compressor disconnects, by the oil return control magnetic valve of opening between secondary oil separator and compressor, compressor is carried out repairing, the oil level of keeping in compressor sump is in normal oil level.The low oil level switch is used for compressor oil starvation stoppage protection, thereby guarantees that compressor continues reliability service.
As shown in Figure 2, two oil level switch 2 have high oil level control point H, low oil level control point L, when ball float is in two control points, have respectively corresponding detection signal output.This pair oil level switch is arranged on the fuel tank of compressor, and ball float can fluctuate with the variation of compressor oil fuel level in tank.When oil level during lower than high oil level control point H, the machine set PLC controller detects to be controlled external secondary oil separator 3 after cut-off signal and opens with the oil return control magnetic valve 4 between screw compressor 1, and compressor is carried out repairing; , control by time-delay during lower than low oil level control point L when oil level, directly corresponding compressor is made disorderly closedown and process.
As shown in Figure 3, when unit normally moved, oil return was controlled magnetic valve 4 and is in closed condition, and screw compressor 1 utilizes the oil of built-in oil-tank to supply with corresponding component.When the machine set PLC controller detects the high oil level of two oil level switch 2 control point signal on certain compressor and disconnects, the oil return control magnetic valve of opening between secondary oil separator 3 and this screw compressor carries out quick repairing to screw compressor, after repairing was completed, closed electromagnetic valve was controlled in this oil return.If outside oil path failure causes compressor repairing failure; screw-compression chance continuous service disconnects to low oil level control signal point L; compressor newspaper oil starvation error protection is shut down, and the oil return control mode that this oil inside offering combines with outside repairing is greatly improved the reliability of unit.
During concrete enforcement, can reequip two oil level switch screw parallel formula Condensing units of using according to of the present utility model pair of oil level switch screw parallel formula Condensing units, also can newly design and produce two oil level switch screw parallel formula Condensing units, can also recombinate to two oil level switch screw parallel formula Condensing units of stock.
Claims (9)
1. two oil level switch screw parallel formula Condensing units, its screw compressor by parallel connection (1), secondary oil separator (3), magnetic valve (4) is controlled in oil return, condenser (5), reservoir (6) and device for drying and filtering (7) form, the outlet of described screw compressor (1) is surveyed successively and described secondary oil separator (3), condenser (5), reservoir (6), device for drying and filtering (7) connects, described secondary oil separator (3) also controls through described oil return the import survey that magnetic valve (4) connects described screw compressor (1), it is characterized in that: the built-in oil eliminator of described screw compressor (1), the upper setting tool of described screw compressor (1) has a high position, two oil level switch (2) of low level.
2. according to claim 1 pair of oil level switch screw parallel formula Condensing units, it is characterized in that: the both sides of described device for drying and filtering (7) are connected with valve, and the import of described screw compressor (1) is surveyed and is connected with valve.
3. according to claim 1 pair of oil level switch screw parallel formula Condensing units, is characterized in that: described screw compressor (1), two oil level switch (2), secondary oil separator (3), oil return control magnetic valve (4), condenser (5), reservoir (6) and integral body of the direct assembly unit formation of device for drying and filtering (7).
4. according to claim 1 pair of oil level switch screw parallel formula Condensing units, it is characterized in that: the part that described screw compressor (1), two oil level switch (2), secondary oil separator (3), oil return are controlled in magnetic valve (4), condenser (5), reservoir (6) and device for drying and filtering (7) is carried out direct assembly unit, then connects and composes an integral body by pipeline.
5. according to claim 1 pair of oil level switch screw parallel formula Condensing units is characterized in that: a kind of in water-cooled shell and tube condenser, air cooling fin formula condenser, evaporative condenser of described condenser (5).
6. according to claim 1 pair of oil level switch screw parallel formula Condensing units, it is characterized in that: described screw compressor (1) is totally-enclosed compressor or semi-closed compressor.
7. according to claim 1 pair of oil level switch screw parallel formula Condensing units is characterized in that: a kind of in single screw compressor, double-screw compressor, three helical-lobe compressors of described screw compressor (1).
8. according to claim 1 pair of oil level switch screw parallel formula Condensing units is characterized in that: described pair of oil level switch (2) for the integral type oil level switch controlled with dibit or by two independently oil level switch form.
9. according to claim 1 pair of oil level switch screw parallel formula Condensing units, it is characterized in that: described pair of oil level switch (2) is float-ball type oil level switch or photo-electric oil level switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220688685 CN202928186U (en) | 2012-12-11 | 2012-12-11 | A double-oil level switch parallel-connection screw compressor condensing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220688685 CN202928186U (en) | 2012-12-11 | 2012-12-11 | A double-oil level switch parallel-connection screw compressor condensing unit |
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| CN202928186U true CN202928186U (en) | 2013-05-08 |
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| CN 201220688685 Expired - Lifetime CN202928186U (en) | 2012-12-11 | 2012-12-11 | A double-oil level switch parallel-connection screw compressor condensing unit |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679212A (en) * | 2016-08-30 | 2017-05-17 | 山东奥纳尔制冷科技有限公司 | Screw compressor unit for cold storage |
| CN107269537A (en) * | 2017-06-12 | 2017-10-20 | 苏州强时压缩机有限公司 | Secondary oil return block-proof type air compressor |
| CN107339826A (en) * | 2017-07-04 | 2017-11-10 | 重庆美的通用制冷设备有限公司 | Compressor assembly and there is its refrigeration system |
| CN107477920A (en) * | 2017-08-30 | 2017-12-15 | 重庆美的通用制冷设备有限公司 | Refrigeration system |
| CN107514832A (en) * | 2017-09-21 | 2017-12-26 | 无锡职业技术学院 | A kind of low-temperature air-cooling hot screw pump system |
| CN110388775A (en) * | 2019-07-25 | 2019-10-29 | 重庆美的通用制冷设备有限公司 | Water cooler and its control method and device |
| CN113503653A (en) * | 2021-08-04 | 2021-10-15 | 珠海格力电器股份有限公司 | Multi-compressor refrigeration system and air conditioner |
| WO2023087682A1 (en) * | 2021-11-22 | 2023-05-25 | 青岛海尔空调电子有限公司 | Compressor system, control method for compressor system, and air conditioner |
-
2012
- 2012-12-11 CN CN 201220688685 patent/CN202928186U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679212A (en) * | 2016-08-30 | 2017-05-17 | 山东奥纳尔制冷科技有限公司 | Screw compressor unit for cold storage |
| CN107269537A (en) * | 2017-06-12 | 2017-10-20 | 苏州强时压缩机有限公司 | Secondary oil return block-proof type air compressor |
| CN107339826A (en) * | 2017-07-04 | 2017-11-10 | 重庆美的通用制冷设备有限公司 | Compressor assembly and there is its refrigeration system |
| CN107477920A (en) * | 2017-08-30 | 2017-12-15 | 重庆美的通用制冷设备有限公司 | Refrigeration system |
| CN107514832A (en) * | 2017-09-21 | 2017-12-26 | 无锡职业技术学院 | A kind of low-temperature air-cooling hot screw pump system |
| CN110388775A (en) * | 2019-07-25 | 2019-10-29 | 重庆美的通用制冷设备有限公司 | Water cooler and its control method and device |
| CN113503653A (en) * | 2021-08-04 | 2021-10-15 | 珠海格力电器股份有限公司 | Multi-compressor refrigeration system and air conditioner |
| WO2023087682A1 (en) * | 2021-11-22 | 2023-05-25 | 青岛海尔空调电子有限公司 | Compressor system, control method for compressor system, and air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG KING AIR CONDITIONER CO., LTD. Free format text: FORMER NAME: ZHEJIANG KING AIR CONDITIONING EQUIPMENT CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 312300 Zhejiang city of Shaoxing province Shangyu city street high road No. 18 Patentee after: ZHEJIANG KING AIR CONDITIONER CO.,LTD. Address before: 312300 Hongxing Village, Shangyu Economic Development Zone (Cao E street, Shaoxing, Zhejiang) Patentee before: ZHEJIANG KING AIR CONDITIONING EQUIPMENT Co.,Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 312300 Zhejiang city of Shaoxing province Shangyu city street high road No. 18 Patentee after: ZHEJIANG KING Co.,Ltd. Address before: 312300 Zhejiang city of Shaoxing province Shangyu city street high road No. 18 Patentee before: ZHEJIANG KING AIR CONDITIONER CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130508 |