CN206146028U - Compressed refrigerator - Google Patents
Compressed refrigerator Download PDFInfo
- Publication number
- CN206146028U CN206146028U CN201620999182.2U CN201620999182U CN206146028U CN 206146028 U CN206146028 U CN 206146028U CN 201620999182 U CN201620999182 U CN 201620999182U CN 206146028 U CN206146028 U CN 206146028U
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- CN
- China
- Prior art keywords
- sealing mechanism
- impeller
- compression
- refrigerating machine
- flow path
- Prior art date
- 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.)
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- 230000006835 compression Effects 0.000 claims abstract description 60
- 238000007906 compression Methods 0.000 claims abstract description 60
- 238000007789 sealing Methods 0.000 claims abstract description 40
- 239000010687 lubricating oil Substances 0.000 claims abstract description 33
- 239000002828 fuel tank Substances 0.000 claims description 35
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 abstract description 39
- 239000003921 oil Substances 0.000 abstract description 29
- 238000005057 refrigeration Methods 0.000 abstract description 20
- 239000006200 vaporizer Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
The utility model provides a compressed refrigerator can make from the compressor to refrigerant compress's compression unit via sealing mechanism and bleed to the refrigeration dosage of oil tank and reduce to can dissolve the messenger makes the lubricating oil that breaks away from together with the refrigerant reduce when the refrigerant of lubricating oil outgases. Compressed refrigerator possesses: support in the impeller of rotation axis (21) (11, 12) to refrigerant compress compression unit (22), its utilization, oil tank (16), it sets up as adjacently with compression unit (22) and stores lubricating oil, and sealing mechanism (24), it sets up in will carrying out the part that divided wall (23) link up to compression unit (22) and oil tank (16) by rotation axis (21), is provided with the route of being connected from this sealing mechanism's (24) interior week and periphery (24P) at sealing mechanism (24) to be provided with the bypass flow path (BP) of being connected the route (24P) and the suction side of impeller (11).
Description
Technical field
This utility model is related to a kind of compression refrigerating machine, and the compression refrigerating machine possesses：Compression unit, it utilizes and is supported on
The impeller of rotary shaft is compressed to cold-producing medium；Fuel tank, it is set to adjacent with above-mentioned compression unit and lubricating oil is store
Deposit；And sealing mechanism, it is arranged at the wall insertion being separated with above-mentioned fuel tank to above-mentioned compression unit by above-mentioned rotary shaft
Part.
Background technology
In the past, for refrigerating air conditioning device etc. compression refrigerating machine by the closed system (closed for being sealed with cold-producing medium
System) constitute, vaporizer, compressor and condenser linked using refrigerant piping and constitutes the compression refrigerating machine,
Wherein, the vaporizer captures heat from cold water (cooled fluid) makes cold-producing medium evaporate and performance refrigeration, the compressor
Refrigerant gas by above-mentioned evaporator evaporation are compressed and the refrigerant gas of high pressure are formed as, the condensation
Device is cooled down to the refrigerant gas of high pressure and is made its condensing using cooling water (cooling fluid).
Compression refrigerating machine possesses compressor, and compressor is built-in with booster engine, and the booster engine has to be carried out to rotary body
The bearing for holding, the gear for making rotary body speedup.The rotary body of compressor carries out high speed rotation, thus slides in bearing, gear etc.
It is heat that portion produces mechanical loss.In order to the sliding parts such as these bearings, gear are lubricated and are cooled down, it is necessary to supply to compressor
To lubricating oil.
Refrigeration machine possesses：Fuel tank, it is stored to lubricating oil；And oil pump, it is by the lubricating oil in fuel tank to compression
Machine is supplied, and the lubrication pressure in fuel tank is delivered to into compressor using oil pump and the sliding parts such as bearing, gear are lubricated.
Compressor is compressed and by the refrigerant gas of high pressure to cold to the refrigerant gas evaporated by vaporizer
Condenser is discharged, and in this process, refrigerant gas can be via the axle envelope part (sealer of the rotary shaft supported to impeller
Structure) and leak into oil supply system side (fuel tank).
Lubricating oil used in compression refrigerating machine is the fluid for easily dissolving cold-producing medium, therefore, in refrigeration machine
During stopping, needing to make cold-producing medium deaerate using thermal source (heater), during refrigeration machine operates, need in refrigeration
Pressure is remained into minimum pressure and makes cold-producing medium deaerate in machine.During refrigeration machine operates, lubricating oil path keeps
Low pressure till suitable with evaporating pressure, therefore, when the cold-producing medium for making to be dissolved in lubricating oil deaerates, oil also concomitantly departs from
And cause the lubricating oil in fuel tank to reduce, so as to there is a problem of stopping because hydraulic pressure reduces causing refrigeration machine to break down.
Utility model content
This utility model be in view of said circumstances and complete, its object is to provide a kind of compression refrigerating machine, its energy
The compression unit being compressed to cold-producing medium from compressor is leak into via sealing mechanism to the refrigerant amount of fuel tank reduces,
And the lubricating oil that can make to depart from together with cold-producing medium when the cold-producing medium to being dissolved in lubricating oil is de-gassed is reduced.
In order to reach above-mentioned purpose, compression refrigerating machine of the present utility model possesses：Compression unit, it utilizes and is supported on rotation
The impeller of axle is compressed to cold-producing medium；Fuel tank, it is set to adjacent with above-mentioned compression unit and lubricating oil is stored；With
And sealing mechanism, it is arranged at the portion of the wall insertion being separated with above-mentioned fuel tank to above-mentioned compression unit by above-mentioned rotary shaft
Point, the compression refrigerating machine is characterised by, is provided with from the inner circumferential of the sealing mechanism in above-mentioned sealing mechanism and is connected with periphery
Path, and be provided with the bypass flow path for being connected the path with the suction side of above-mentioned impeller.
Optimal way of the present utility model is characterised by that above-mentioned bypass flow path is arranged at compressor.
Optimal way of the present utility model is characterised by that a part for above-mentioned bypass flow path is via compression case external body
Bypass pipe.
Optimal way of the present utility model is characterised by, the pipe resistance value of above-mentioned bypass flow path be less than cold-producing medium from
The pipe resistance value of the flow path resistance value that above-mentioned sealing mechanism is leaked to above-mentioned fuel tank.
Optimal way of the present utility model is characterised by that above-mentioned sealing mechanism is made up of labyrinth, the labyrinth
Formula sealing member is opposed with the outer peripheral face of above-mentioned rotary shaft and countershaft is sealed.
Optimal way of the present utility model is characterised by that above-mentioned impeller is made up of sencond stage impeller, above-mentioned bypass flow path with
The suction side connection of first order impeller.
This utility model realizes the effect being exemplified below.
1) can make that the compression unit that cold-producing medium is compressed is leak into fuel tank via sealing mechanism from compressor
Refrigerant amount is reduced such that it is able to make the profit departed from together with cold-producing medium when the cold-producing medium to being dissolved in lubricating oil is de-gassed
Lubricating oil is reduced.
2) because the lubricating oil departed from together with cold-producing medium is reduced, so as to reduce will not the lubricating oil in fuel tank, therefore
Will not stop because oil pressure reduces causing refrigeration machine to break down.
3) because the lubricating oil departed from together with cold-producing medium is reduced, so that refrigeration machine operating range is in high-temperature area
Expand.
Description of the drawings
Fig. 1 is the schematic diagram of the embodiment for illustrating the compression refrigerating machine involved by this utility model.
Fig. 2 is the schematic sectional view of the first embodiment for illustrating bypass flow path.
Fig. 3 is the schematic sectional view of the details for illustrating sealing mechanism and its periphery shown in Fig. 2.
Fig. 4 is the schematic sectional view of the second embodiment for illustrating bypass flow path.
The explanation of reference
1... turbo-compressor；2... condenser；3... vaporizer；4... economizer；5... refrigerant piping；11...
First order impeller；12... second level impeller；13... compressor motor；14... pump blades；15... gear-box；16... it is oily
Case；17... oil pump；18... oil circulation pipeline；19... refrigerant lines are cooled down；20... oil cooler；21... rotary shaft；
22... compression unit；23... wall；24... sealing mechanism；24P... paths；26... bearing；27... gear；30... housing；
BP... bypass flow path.
Specific embodiment
Hereinafter, the embodiment of the compression refrigerating machine involved by this utility model is illustrated referring to figs. 1 to Fig. 4.
In Fig. 1 to Fig. 4, omit to structural element mark identical reference identically or comparably and by the explanation for repeating.
Fig. 1 is the schematic diagram of the embodiment for illustrating the compression refrigerating machine involved by this utility model.As shown in figure 1,
Compression refrigerating machine possesses：Turbo-compressor 1, it is compressed to cold-producing medium；Condenser 2, it utilizes cooling water (cooling stream
Body) refrigerant gas after compression are cooled down and is made its condensing；Vaporizer 3, it captures heat from cold water (cooled fluid)
Evaporate cold-producing medium and play refrigeration；And used as the economizer 4 of intercooler, it is configured at condenser 2 with evaporation
Between device 3, these each equipment are linked using the refrigerant piping 5 for refrigerant cycle and constitutes compression refrigerating machine.
In the embodiment shown in Fig. 1, turbo-compressor 1 is made up of multistage turbocompressor, multistage turbocompressor
By two-stage turbine compression mechanism into, and be configured to include first order impeller 11, second level impeller 12 and make these impellers 11,
The compressor motor 13 of 12 rotations.The suction side of first order impeller 11 be provided with to suction from refrigerant gas to impeller 11,12
The pump blades (suction vane) 14 that inbound traffics are adjusted.Using refrigerant piping 5 by turbo-compressor 1 and economizer
4 connections, by economizer 4, detached refrigerant gas (are two in the example by the multistage compression stage to turbo-compressor 1
Level) mid portion (in this for part) between first order impeller 11 and second level impeller 12 import.
In the kind of refrigeration cycle of the compression refrigerating machine for constituting as shown in Figure 1, cold-producing medium is in turbo-compressor 1, solidifying
Contracting device 2, vaporizer 3 and economizer 4 are circulated, and using the low-temperature receiver heat manufacture cold water obtained by vaporizer 3 load is tackled,
What is supplied by the heat for carrying out flash-pot 3 obtained in kind of refrigeration cycle and from motor 13 is suitable with the work(of turbo-compressor 1
Heat to supply to condenser 2 cooling water discharge.On the other hand, by economizer 4 detached refrigerant gas by
The mid portion of the multi-stage compression level of turbo-compressor 1 is imported, and is converged with the refrigerant gas from first order impeller 11 and quilt
Second level impeller 12 compresses.By two-stage compression single-stage section thermal cycle, increased based on the refrigeration part of economizer 4, because
This, refrigeration correspondingly strengthens, and compared with the situation of economizer 4 is not provided with, can realize the high efficiency of refrigeration.
Turbo-compressor 1 possesses the gear-box 15 received to bearing 26, gear 27, arranges in the bottom of gear-box 15
Have for it is countershaft hold, the fuel tank 16 of the sliding part fuel feeding such as gear.Oil pump 17 is provided with fuel tank 16.It is connected with the oil pump 17
Oil circulation pipeline (oil circulation pipe arrangement) 18.Oil circulation pipeline 18 by way of from oil cooler 20 to extend, and and gear
Case 15 and compressor motor 13 connect.Therefore, the lubricating oil in fuel tank 16 is conveyed by oil pump 17 in oil circulation pipeline 18, from
And the lubricating oil is flowed through in oil cooler 20 and is returned into gear-box 15.In oil cooler 20, in the bottom with condenser 2
Liquid refrigerant and carry out heat between the lubricating oil of the flowing of oil circulation pipeline 18 that the cooling refrigerant lines 19 of connection flow
Exchange.The heat of lubricating oil is passed to cold-producing medium, thus by refrigerant heat, and will lubricate oil cooling.Lubrication after cooling
Oil from oil circulation pipeline 18 by and by sliding parts such as the bearing 26 into gear-box 15 and in compressor motor 13, gears 27
Supply, so as to the sliding parts such as these bearings 26, gear 27 are lubricated, be cooled down.So, lubricating oil is according to fuel tank 16, oil cooling
But device 20, the order of gear-box 15 and in these parts circulate.Using balance pipe (not shown) make fuel tank 16 and vaporizer 3 or
The pressure of the low voltage sections such as the suction side of person's compressor is equal.
Next, with reference to Fig. 2～Fig. 4 in the turbo-compressor 1 for constituting as shown in Figure 1, for making from utilization
The compression unit that 11,12 pairs of cold-producing mediums of impeller are compressed leaks into the side reduced to the refrigerant amount of fuel tank 15 via sealing mechanism
The structure on through-flow road is illustrated.
Fig. 2 is the schematic sectional view of the first embodiment for illustrating bypass flow path.As shown in Fig. 2 turbo-compressor 1 has
It is standby：Compression unit 22, it is compressed using 11, the 12 pairs of cold-producing mediums of impeller for being supported on rotary shaft 21；Fuel tank 16, its be set to
Above-mentioned compression unit 22 is adjacent and lubricating oil is stored；And sealing mechanism 24, it is arranged at will be to compression by rotary shaft 21
The part of the insertion of wall 23 that portion 22 and the gear-box 15 with fuel tank 16 are separated.Sealing mechanism 24 is by labyrinth structure
It is opposed with the outer peripheral face of rotary shaft 21 into, the labyrinth and countershaft sealed.
Fig. 3 is the schematic sectional view of the details for illustrating sealing mechanism 24 and its periphery shown in Fig. 2.Such as Fig. 3 institutes
Show, compression unit 22 will arranged with the part of the insertion of wall 23 that is separated of the gear-box 15 with fuel tank 16 by rotary shaft 21
There is sealing mechanism 24.The path 24P being connected with periphery from the inner circumferential of sealing mechanism 24 is formed with sealing mechanism 24.
As shown in Fig. 2 in the compression unit 22 that will be compressed using 11,12 pairs of cold-producing mediums of impeller and with fuel tank 16
The wall 23 that gear-box 15 separates has been internally formed bypass flow path BP.In bypass flow path BP being internally formed and sealer of wall 23
The path 24P connections of structure 24.In addition, being also formed with bypass stream in the inside of the housing 30 of the compression unit 22 for possessing impeller 11,12
Road BP, the suction side opening of bypass flow path BP of the inside of housing 30 to first order impeller 11.That is, from the inner circumferential of sealing mechanism 24
The path 24P being connected with periphery via bypass flow path BP in bypass flow path BP in wall 23 and housing 30 with first order leaf
The suction side connection of wheel 11.
In the past, refrigerant gas had been compressed and were discharging using impeller and to condenser the refrigerant gas of high pressure
During, there are the following problems：Refrigerant gas can be from the rotary shaft supported to impeller and sealing mechanism (axle envelope part)
Between gap leak into fuel tank.If refrigerant gas are leak into fuel tank, during refrigeration machine operates, lubricating oil path
Low pressure is kept using balance pipe till suitable with evaporating pressure, therefore, when the cold-producing medium to being dissolved in lubricating oil is carried out
During degassing, oil also concomitantly departs from and causes the lubricating oil in fuel tank to reduce, so as to there are the following problems：Because oil pressure reduces causing
Refrigeration machine breaks down and stops.
On the other hand, in this utility model, as shown in Figures 2 and 3, the path 24P and side using sealing mechanism 24
Through-flow road BP, makes the gap between the rotary shaft 21 that supported to impeller 11,12 and sealing mechanism 24 and first order impeller 11
Suction side connection.Therefore, it is being compressed using 11,12 pairs of refrigerant gas of impeller and by the refrigerant gas of high pressure to cold
During condenser 2 is discharged, even if between refrigerant gas are flowed between rotary shaft 21 and sealing mechanism 24 from compression unit 22
Gap, it is also possible to the refrigerant gas in gap will be flowed into using the path 24P and bypass flow path BP of sealing mechanism 24 to
The suction side of one stage impeller 11 imports.Therefore, it is possible to make to flow into the system of fuel tank 16 via sealing mechanism 24 from compression unit 22
Cryogen amount is reduced such that it is able to make the profit concomitantly departed from cold-producing medium when the cold-producing medium to being dissolved in lubricating oil is de-gassed
Lubricating oil is reduced.In addition, because the lubricating oil concomitantly departed from cold-producing medium is reduced without reducing the lubricating oil in fuel tank 16, because
This, will not stop because oil pressure reduces causing refrigeration machine to produce failure.
Fig. 4 is the schematic sectional view of the second embodiment for illustrating bypass flow path.In the embodiment shown in Fig. 4, will
Bypass flow path BP that the path 24P of sealing mechanism 24 is connected with the suction side of first order impeller 11 by compression case external body side
Siphunculus is constituted.In the mistake being compressed to refrigerant gas using impeller and discharge the refrigerant gas of high pressure to condenser 2
Cheng Zhong, even if refrigerant gas flow into the gap between rotary shaft 21 and sealing mechanism 24 from compression unit 22, using sealer
The path 24P of structure 24 and bypass flow path BP that is made up of bypass pipe also can will flow into the refrigerant gas in gap to first
The suction side of level impeller 11 imports.Therefore, it is possible to make from compression unit 22 to be leak into the refrigeration of fuel tank 16 via sealing mechanism 24
Dosage is reduced.
Next, the pipe resistance value of bypass flow path BP to illustrating in Fig. 2 and Fig. 4 is illustrated.In bypass flow path BP
The driving force of the cold-producing medium of flowing is the differential pressure of discharge with the suction of compressor.Cold-producing medium is leaked from sealing mechanism 24 to fuel tank 16
Driving force be also compressor discharge with suction differential pressure.
Therefore, according to the pipe resistance of bypass flow path BP and from sealing mechanism 24 to the balance of the flow path resistance of fuel tank 16
Determine the direction of main flow.If the pipe resistance of bypass flow path BP is set to than from sealing mechanism 24 to the flow path resistance of fuel tank 16
Little, then bypass flow path side flows into as main flow.Based on the shape of the different and required pipe arrangement according to product, flexibility and
Internal diameter is calculated and is obtained pipe resistance value, and differential pressure is according to the different of product and is suitably based on JIS rated conditions and sets,
And shape, flexibility and internal diameter of the pipe arrangement of bypass flow path BP etc. are determined based on the differential pressure and pipe resistance value that set.
So far embodiment of the present utility model is illustrated, this utility model is not limited to above-mentioned embodiment party
Formula, in the range of its technological thought, it is of course possible to implement in a variety of ways.
Claims (6)
1. a kind of compression refrigerating machine, the compression refrigerating machine possesses：Compression unit, it utilizes the impeller for being supported on rotary shaft to system
Cryogen is compressed；Fuel tank, it is set to adjacent with the compression unit and lubricating oil is stored；And sealing mechanism, its
It is arranged at the part of the wall insertion being separated with the fuel tank to the compression unit by the rotary shaft,
The compression refrigerating machine is characterised by,
Be provided with the path being connected with periphery from the inner circumferential of the sealing mechanism in the sealing mechanism, and be provided with by the path with
The bypass flow path of the suction side connection of the impeller.
2. compression refrigerating machine according to claim 1, it is characterised in that
The bypass flow path is arranged at compressor.
3. compression refrigerating machine according to claim 1, it is characterised in that
A part for the bypass flow path via compression case external body bypass pipe.
4. compression refrigerating machine according to any one of claim 1 to 3, it is characterised in that
The pipe resistance value of the bypass flow path is less than cold-producing medium and hinders from the stream that the sealing mechanism is leaked to the fuel tank
The pipe resistance value of force value.
5. compression refrigerating machine according to any one of claim 1 to 3, it is characterised in that
The sealing mechanism is made up of labyrinth, the labyrinth it is opposed with the outer peripheral face of the rotary shaft and
It is countershaft to be sealed.
6. compression refrigerating machine according to any one of claim 1 to 3, it is characterised in that
The impeller is made up of sencond stage impeller, and the bypass flow path is continuous with the suction side of first order impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620999182.2U CN206146028U (en) | 2016-08-30 | 2016-08-30 | Compressed refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620999182.2U CN206146028U (en) | 2016-08-30 | 2016-08-30 | Compressed refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206146028U true CN206146028U (en) | 2017-05-03 |
Family
ID=58617853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620999182.2U Active CN206146028U (en) | 2016-08-30 | 2016-08-30 | Compressed refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206146028U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108800752A (en) * | 2018-05-28 | 2018-11-13 | 张家港富瑞氢能装备有限公司 | Evaporation hydrogen recycling device in liquefaction of hydrogen system |
-
2016
- 2016-08-30 CN CN201620999182.2U patent/CN206146028U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108800752A (en) * | 2018-05-28 | 2018-11-13 | 张家港富瑞氢能装备有限公司 | Evaporation hydrogen recycling device in liquefaction of hydrogen system |
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