CN203744604U - Parallel unit oil equalizing system - Google Patents
Parallel unit oil equalizing system Download PDFInfo
- Publication number
- CN203744604U CN203744604U CN201320856896.4U CN201320856896U CN203744604U CN 203744604 U CN203744604 U CN 203744604U CN 201320856896 U CN201320856896 U CN 201320856896U CN 203744604 U CN203744604 U CN 203744604U
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- CN
- China
- Prior art keywords
- oil
- compressor
- electronic valve
- parallel
- balancing system
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 239000012530 fluid Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 73
- 239000010687 lubricating oil Substances 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 239000000446 fuel Substances 0.000 description 6
- 238000011067 equilibration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
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- Compressor (AREA)
Abstract
The utility model provides a parallel unit oil-balancing system, including a plurality of compressors, a plurality of oil conservators to and vapour and liquid separator, oil separator and oil balance pipe, the parallelly connected setting of a plurality of compressors, every compressor corresponds an oil conservator. The device also comprises a liquid level switch and an electronic valve; the air suction end of each compressor is connected to the air-liquid separator, the air exhaust end of each compressor is connected to the air inlet of the oil separator, the air outlet of the oil separator is used for being connected with the outdoor heat exchanger, the oil equalizing port of the oil separator is connected with the oil balancing pipe, and the oil reservoir is connected with the electronic valve in series and is connected to the oil balancing pipe; the liquid level switch is arranged in the oil reservoir and used for controlling the electronic valve to be opened and closed. The utility model discloses a parallel unit oil equalizing system has reduced parallel unit's cost. And simultaneously, the problem of distribution of lubricating oil among the parallel units is solved, so that the oil supply of each compressor is independent and not interfered with each other, and the operation reliability of the parallel units is improved.
Description
Technical field
The utility model relates to Compressor Technology field, particularly relates to a kind of unit oil-balancing system in parallel.
Background technology
At present, two kinds of equal oily modes that compressor parallel unit is conventional are gas and oil equilibration method and oil level balancing method.
Just reliable when gas and oil equilibration method is only limited to two same model compressor parallels, very high to the requirement of pipe resistance balance in the time of the compressor for different model or multiple compressors, and poor reliability.
Oil level balancing method needs outsourcing oil level balancer, and cost is very high.And the spool of oil level balancer inside is dynamic component frequently, once damage, whole oil level balancer all needs to change, and has increased maintenance cost.In the time changing oil level balancer, also need first to reclaim the oil in compressor crankcase, complex steps.
Utility model content
In view of the present situation of prior art, the purpose of this utility model is to provide a kind of unit oil-balancing system in parallel, and this parallel connection unit oil-balancing system has reduced the cost of unit in parallel, has improved the reliability of unit in parallel.
For achieving the above object, the utility model adopts following technical scheme:
A kind of unit oil-balancing system in parallel, comprises multiple compressors, multiple oil conservator, and gas-liquid separator, oil eliminator and oil balance tube, multiple described compressor parallel settings, the corresponding described oil conservator of each described compressor;
Also comprise liquid-level switch and electronic valve;
The suction end of each described compressor is all connected to described gas-liquid separator, the exhaust end of described compressor is connected to the air inlet of described oil eliminator, the gas outlet of described oil eliminator is for junction chamber external heat exchanger, the equal hydraulic fluid port of described oil eliminator connects described oil balance tube, and the described oil conservator described electronic valve of connecting is connected to described oil balance tube;
Described liquid-level switch is arranged in described oil conservator, for controlling the switching of described electronic valve.
In an embodiment, also comprise suction filter therein, the corresponding suction filter of each described compressor, described suction filter is connected between described compressor and described gas-liquid separator.
In an embodiment, also comprise air suction main therein, described air suction main connects described gas-liquid separator, and the port of export of described suction filter is communicated with described air suction main.
In an embodiment, described air suction main series connection stop valve is connected to described gas-liquid separator therein.
Therein in an embodiment, the stop valve of connecting between described electronic valve and described oil conservator, the stop valve of also connecting between described oil balance tube and described electronic valve.
In an embodiment, on the crankcase of described compressor, be also provided with and look oily mirror therein.
Therein in an embodiment, the oil level of the critical operating point of described liquid-level switch is looked 1/2 place of oily mirror described in being.
In an embodiment, described electronic valve is magnetic valve or motor-driven valve therein.
The beneficial effects of the utility model are:
Unit oil-balancing system in parallel of the present utility model, by using electronic valve and replacing oil level balancer of the prior art with the oil conservator of liquid-level switch, has reduced the cost of unit in parallel.And solve the assignment problem of lubricating oil between unit in parallel simultaneously, made the fuel feeding of each compressor separate, do not interfere with each other, improved the operational reliability of unit in parallel.In the time that the spool of electronic valve damages, the stop valve that only need close electronic valve two ends, changes electronic valve, has reduced maintenance cost.In the process of maintenance, do not need to reclaim the lubricating oil in the crankcase of compressor, convenience easy to maintenance.
Brief description of the drawings
Fig. 1 is the structural representation of unit oil-balancing system one embodiment in parallel of the present utility model.
Detailed description of the invention
In order to make the technical solution of the utility model clearer, below in conjunction with accompanying drawing, unit oil-balancing system in parallel of the present utility model is described in further detail.Should be appreciated that specific embodiment described herein is only in order to explain the utility model and to be not used in restriction the utility model.
Be illustrated in figure 1 the structural representation of unit oil-balancing system one embodiment in parallel of the present utility model, this parallel connection unit oil-balancing system comprises multiple compressors 1, multiple oil conservators 2 and gas-liquid separator 9, oil eliminator 10 and oil balance tube 5.Wherein, multiple compressors 1 are arranged in parallel, the corresponding oil conservator 2 of each compressor 1.In the present embodiment, four compressors 1 are arranged in parallel, four oil conservators 2 respectively with four corresponding settings of compressor 1.In other embodiments, the quantity of compressor 1 and oil conservator 2 can also be other quantity, specifically can expand according to the actual requirements.
This parallel connection unit oil-balancing system also comprises liquid-level switch 3 and electronic valve 4.Wherein, the suction end of each compressor 1 is all connected to gas-liquid separator 9, and the exhaust end of each compressor 1 is all connected to the air inlet of oil eliminator 10.The gas outlet of oil eliminator 10 is for junction chamber external heat exchanger, and the equal hydraulic fluid port of oil eliminator 10 connects oil balance tube 5.Each oil conservator 2 corresponding electronic valve 4 of connecting is connected to oil balance tube 5, liquid-level switch 3 correspondences be arranged on oil conservator 2 inside, for controlling the switching of corresponding electronic valve 4.Preferably, electronic valve 4 is magnetic valve or motor-driven valve.
By using electronic valve and replacing oil level balancer of the prior art with the oil conservator of liquid-level switch, reduce the cost of unit in parallel.And solve the assignment problem of lubricating oil between unit in parallel simultaneously, made the fuel feeding of each compressor separate, do not interfere with each other, improved the operational reliability of unit in parallel.
As a kind of embodiment, this parallel connection unit oil-balancing system also comprises suction filter 7 and air suction main 8.7, four suction filters 7 of the corresponding suction filter of each compressor are connected on respectively between corresponding compressor 1 and gas-liquid separator 9.Suction filter 7 is connected by air suction main 8 with gas-liquid separator 9, and the port of export of suction filter 7 is communicated with air suction main 8.Can ensure so the normal work of each compressor, non-interference.More preferably, air suction main 8 stop valve of connecting is connected to gas-liquid separator 9.
More preferably, between electronic valve 4 and oil conservator 2, be in series with stop valve 6.Between oil balance tube 5 and electronic valve 4, be also in series with respectively stop valve 6.When the spool of electronic valve damages like this, the stop valve that only need close electronic valve two ends, changes electronic valve, has reduced maintenance cost.In the process of maintenance, do not need to reclaim the lubricating oil in the crankcase of compressor, convenience easy to maintenance.
More preferably, be provided with and look oily mirror on the crankcase of compressor 1, the oil level of liquid-level switch 3 critical operating points is looked 1/2 place of oily mirror.When the liquid level in oil conservator 2 lower than or while exceeding 1/2 place of looking oily mirror of compressor 1, liquid-level switch 3 correspondingly disconnects or is closed.Preferably, when the liquid level of oil conservator 2 is when looking 1/2 place of oily mirror, liquid-level switch 3 disconnects, and mainboard control electronic valve 4 is opened.After electronic valve 4 is opened, the lubricating oil in oil eliminator 10 flow in the crankcase of compressor 1 under the effect of pressure reduction.
In the time that the liquid level of oil conservator exceedes 1/2 place of looking oily mirror, liquid-level switch 3 closures, mainboard control electronic valve 4 is closed.In the present embodiment, after liquid-level switch 3 closures, mainboard time delay 15s closes electronic valve 4 in left and right.In other embodiments, the time delay of mainboard can also be other times section or not time delay.After electronic valve 4 is closed, the lubricating oil in oil eliminator 10 no longer flows in the crankcase of compressor, completes the fuel feeding to compressor.
Illustrate the course of work of this parallel connection unit oil-balancing system below:
In unit running process, when the liquid level of oil conservator 2 is lower than 1/2 place of looking oily mirror of compressor 1, mainboard can detect the signal that liquid-level switch 3 disconnects, and now can judge compressor 1 oil starvation.Then mainboard control electronic valve 4 is opened, and oil eliminator 10 carries out fuel feeding in the crankcase of compressor 1.Look oily 1/2 when above of mirror when the liquid level of oil conservator 2 returns to, liquid-level switch 3 is closed, and mainboard postpones after 15s, and mainboard control electronic valve 4 is closed.Because in fuel feeding process, the electronic valve that all the other compressors are corresponding is not opened, so can not have influence on oil level and the ruuning situation of other compressors.
Because the spool of electronic valve is frequency dynamic component, so easily damage, this just relates to maintenance.Compared with using the mode of oil level balancer in prior art, convenience easy to maintenance of the present utility model.For example, in the time that the electronic valve 4 of compressor 1 correspondence damages, two stop valves 6 at electronic valve 4 two ends can be closed, then get final product the electronic valve 4 of direct worse damage.In the utility model, only need to change electronic valve, compared with changing whole oil level controllers in prior art, reduced cost.And simple to operate, do not need to reclaim the oil in the crankcase of compressor, also omit to compressor is again filled with oil and vacuumized the operations such as pressurize.In addition, also can not affect the normal work of other compressors in Renewal process, the operational reliability of complete machine is higher.
Unit oil-balancing system in parallel of the present utility model, by using electronic valve and replacing oil level balancer of the prior art with the oil conservator of liquid-level switch, has reduced the cost of unit in parallel.And solve the assignment problem of lubricating oil between unit in parallel simultaneously, made the fuel feeding of each compressor separate, do not interfere with each other, improved the operational reliability of unit in parallel.In the time that the spool of electronic valve damages, the stop valve that only need close electronic valve two ends, changes electronic valve, has reduced maintenance cost.In the process of maintenance, do not need to reclaim the lubricating oil in the crankcase of compressor, convenience easy to maintenance.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (8)
1. a unit oil-balancing system in parallel, comprises multiple compressors, multiple oil conservator, and gas-liquid separator, oil eliminator and oil balance tube, multiple described compressor parallel settings, and the corresponding described oil conservator of each described compressor, is characterized in that:
Also comprise liquid-level switch and electronic valve;
The suction end of each described compressor is all connected to described gas-liquid separator, the exhaust end of described compressor is connected to the air inlet of described oil eliminator, the gas outlet of described oil eliminator is for junction chamber external heat exchanger, the equal hydraulic fluid port of described oil eliminator connects described oil balance tube, and the described oil conservator described electronic valve of connecting is connected to described oil balance tube;
Described liquid-level switch is arranged in described oil conservator, for controlling the switching of described electronic valve.
2. unit oil-balancing system in parallel according to claim 1, is characterized in that:
Also comprise suction filter, the corresponding suction filter of each described compressor, described suction filter is connected between described compressor and described gas-liquid separator.
3. unit oil-balancing system in parallel according to claim 2, is characterized in that:
Also comprise air suction main, described air suction main connects described gas-liquid separator, and the port of export of described suction filter is communicated with described air suction main.
4. unit oil-balancing system in parallel according to claim 3, is characterized in that:
Described air suction main series connection stop valve is connected to described gas-liquid separator.
5. according to the unit oil-balancing system in parallel described in claim 1-4 any one, it is characterized in that:
The stop valve of connecting between described electronic valve and described oil conservator, the stop valve of also connecting between described oil balance tube and described electronic valve.
6. unit oil-balancing system in parallel according to claim 5, is characterized in that:
On the crankcase of described compressor, be also provided with and look oily mirror.
7. unit oil-balancing system in parallel according to claim 6, is characterized in that:
The oil level of the critical operating point of described liquid-level switch is looked 1/2 place of oily mirror described in being.
8. unit oil-balancing system in parallel according to claim 5, is characterized in that:
Described electronic valve is magnetic valve or motor-driven valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320856896.4U CN203744604U (en) | 2013-12-24 | 2013-12-24 | Parallel unit oil equalizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320856896.4U CN203744604U (en) | 2013-12-24 | 2013-12-24 | Parallel unit oil equalizing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203744604U true CN203744604U (en) | 2014-07-30 |
Family
ID=51344394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320856896.4U Expired - Lifetime CN203744604U (en) | 2013-12-24 | 2013-12-24 | Parallel unit oil equalizing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203744604U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729152A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Parallel unit oil equalizing system |
-
2013
- 2013-12-24 CN CN201320856896.4U patent/CN203744604U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729152A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Parallel unit oil equalizing system |
| CN104729152B (en) * | 2013-12-24 | 2017-04-12 | 珠海格力电器股份有限公司 | Parallel unit oil equalizing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |