CN204226200U - A kind of screw-type refrigerating system and exhaust end base of oil injection threaded bolt formula compressor thereof - Google Patents
A kind of screw-type refrigerating system and exhaust end base of oil injection threaded bolt formula compressor thereof Download PDFInfo
- Publication number
- CN204226200U CN204226200U CN201420646284.7U CN201420646284U CN204226200U CN 204226200 U CN204226200 U CN 204226200U CN 201420646284 U CN201420646284 U CN 201420646284U CN 204226200 U CN204226200 U CN 204226200U
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- Prior art keywords
- oil
- threaded bolt
- storage tank
- exhaust end
- end base
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- 238000002347 injection Methods 0.000 title claims abstract description 44
- 239000007924 injection Substances 0.000 title claims abstract description 44
- 238000003860 storage Methods 0.000 claims abstract description 35
- 238000005057 refrigeration Methods 0.000 claims description 10
- 239000006200 vaporizer Substances 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- -1 screw compressor Substances 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 abstract description 25
- 239000003507 refrigerant Substances 0.000 abstract description 23
- 238000005461 lubrication Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 7
- 230000005484 gravity Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 86
- 230000009467 reduction Effects 0.000 description 8
- 239000007788 liquid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model discloses a kind of screw-type refrigerating system and exhaust end base of oil injection threaded bolt formula compressor thereof, this exhaust end base of oil injection threaded bolt formula compressor comprises casing, is arranged at a pair axis being parallel in casing and intermeshing male rotor and female rotor, and the driver part driving male rotor to rotate, casing offers downward opening intakeport, casing inner wall offers oil storage tank near intakeport place, and the notch of oil storage tank upward.After exhaust end base of oil injection threaded bolt formula compressor quits work, lubricant oil between rotor flows under the influence of gravity in oil storage tank, when again starting compressor, suction chamber forms negative pressure, refrigerant vapour to be inhaled in suction chamber and to change at suction chamber and casing inner wall face multiple impacts and flows to and scan lubricant oil in oil storage tank, lubricant oil is made to enter negative and positive rotor inter-tooth volume together along with refrigerant vapour, between negative and positive rotor tooth, form oil film between rotor and the inwall of casing, the existence of this oil film can improve the lubrication effect at compressor start initial stage effectively.
Description
Technical field
The utility model relates to the lubrication technical field at exhaust end base of oil injection threaded bolt formula compressor start initial stage in screw-type refrigerating system, particularly a kind of screw-type refrigerating system and exhaust end base of oil injection threaded bolt formula compressor thereof.
Background technique
At present, the screw-type refrigerating system that the middle or small cold section of central air-conditioning system adopts, with its compact structure, the advantage such as size is little, operational reliability is high, quick-wear part is less, technical performance is stable, management maintenance is simple, in the refrigeration system product type selection of central air-conditioner, extremely pay attention to.
As shown in Figure 1, screw-type refrigerating system generally includes and flows to along the refrigeration working medium in figure shown in arrow " → " vaporizer 1, exhaust end base of oil injection threaded bolt formula compressor 2, oil separator 3, condenser 4 and the throttle valve 5 that are communicated with successively.Particularly, liquid refrigerant absorbs heat to evaporate and forms refrigerant vapour in vaporizer 1, this refrigerant vapour is inhaled in screw compressor, oil separator 3 is entered after the low pressure refrigerant vapor being mixed with lubricant oil being compressed to elevated pressures in its compression chamber, oil separator 3 is by after refrigerant vapour and lubricating oil separation, refrigerant vapour flows into condenser 4 and carries out condensation, and be back under the differential pressure action of lubricant oil between vaporizer 1 and condenser 4 in exhaust end base of oil injection threaded bolt formula compressor 2, with to bearing, rotors etc. lubricate, sealing, cooling, noise reduction, then lubricant oil is back to refrigerant vapour the circulation that oil separator 3 completes lubricant oil.The liquid refrigerant formed after condensation in condenser 4 is shunted, a part is back in vaporizer 1 and enters next refrigeration cycle after throttle valve 5 reduces pressure, another part flows in exhaust end base of oil injection threaded bolt formula compressor 2, for cooling for its drive motor, being back to equally after cooling motor in vaporizer 1 and participating in next refrigeration cycle.
But because the intakeport of this exhaust end base of oil injection threaded bolt formula compressor 2 is opening down, when its intakeport and exhaust ports not yet set up pressure reduction, new lubricant oil is not inhaled into and the lubricant oil residued in casing falls via intakeport under gravity.For long-time fuel injection helical lobe compressor 2 of shutting down; old oil film between the degreasing lower rotor part of refrigeration agent, between rotor and rotor chamber is destroyed; and initial start stage condenser 4 is suitable with vaporizer 1 pressure, and fuel feeding pressure reduction is not yet set up, and the delivery volume of lubricant oil is almost nil.But set up fuel feeding pressure reduction and need the regular hour, and during this period of time, screw compressor 2 is in dry operating condition always, and this will cause, and screw compressor 2 lubrication effect is poor, to start noise large, there will be between rotor or problem that rotor and casing inner wall sinter time serious.
In view of this, how solving the lubrication of exhaust end base of oil injection threaded bolt formula compressor in initial start stage, is those skilled in the art's technical problems urgently to be resolved hurrily.
Model utility content
For above-mentioned defect, core object of the present utility model is, provides a kind of exhaust end base of oil injection threaded bolt formula compressor, solves the lubrication problem of exhaust end base of oil injection threaded bolt formula compressor in initial start stage.On this basis, the utility model also provides a kind of screw-type refrigerating system comprising this exhaust end base of oil injection threaded bolt formula compressor.
In order to solve the problems of the technologies described above, the utility model provides a kind of exhaust end base of oil injection threaded bolt formula compressor, comprise casing, be arranged at a pair axis being parallel in casing and intermeshing male rotor and female rotor, and the driver part driving male rotor to rotate, casing offers downward opening intakeport, casing inner wall offers oil storage tank near intakeport place, and the notch of oil storage tank upward.
After exhaust end base of oil injection threaded bolt formula compressor quits work, lubricant oil between rotor flows under the influence of gravity in oil storage tank, when again starting compressor, suction chamber forms negative pressure, refrigerant vapour to be inhaled in suction chamber and to change at suction chamber and casing inner wall face multiple impacts and flows to, scan lubricant oil in oil storage tank simultaneously, lubricant oil is made to enter negative and positive rotor inter-tooth volume together along with refrigerant vapour, between negative and positive rotor tooth, oil film is formed between rotor and the inwall of casing, the existence of this oil film can improve the lubrication effect at compressor start initial stage effectively, and absorb sound wave reduction noise, also can to prevent between negative and positive rotor and the Sintering Problem in both and casing inner wall face simultaneously, thus ensure that the normal work of exhaust end base of oil injection threaded bolt formula compressor, extend its working life.
Preferably, described oil storage tank is specially the annular oil storage tank around described intakeport.
Preferably, the bottom land of described oil storage tank is the plane perpendicular to described intakeport axis.
Preferably, the madial wall of described oil storage tank is the curved surface be connected smoothly with described casing inner wall.
Preferably, the outer side wall of described oil storage tank is the curved surface with the transition of described intakeport interior walls be smooth.
Preferably, described oil storage tank casting is on the inwall of described casing.
Except above-mentioned exhaust end base of oil injection threaded bolt formula compressor, the utility model also provides a kind of screw-type refrigerating system, comprise and flow to along refrigeration working medium the vaporizer, screw compressor, oil separator, condenser and the throttle valve that are communicated with successively and form refrigeration cycle, described screw compressor is specially exhaust end base of oil injection threaded bolt formula compressor as above.
Because this exhaust end base of oil injection threaded bolt formula compressor has above-mentioned technique effect, be appreciated that the screw-type refrigerating system comprising this exhaust end base of oil injection threaded bolt formula compressor has same technique effect, so do not repeat them here herein.
Accompanying drawing explanation
Fig. 1 shows the structural representation of screw-type refrigerating system;
Fig. 2 shows the sectional structure schematic diagram of exhaust end base of oil injection threaded bolt formula compressor embodiment provided by the utility model;
Fig. 3 shows A place close-up schematic view in Fig. 2.
Corresponding relation in Fig. 1 to Fig. 3 between reference character and all parts title:
1 vaporizer, 2 exhaust end base of oil injection threaded bolt formula compressors, 2
inintakeport, 21 casings, 22 male rotors, 23 female rotors, 24 suction chambers, 25 oil storage tanks, 251 bottom lands, 252 madial walls, 253 outer side walls, 3 oil separators, 4 condensers, 5 throttle valve, 6 lubricant oil.
Embodiment
Core of the present utility model is, provides a kind of exhaust end base of oil injection threaded bolt formula compressor, to improve the lubrication effect at existing exhaust end base of oil injection threaded bolt formula compressor start initial stage.On this basis, the utility model also provides a kind of screw-type refrigerating system comprising this exhaust end base of oil injection threaded bolt formula compressor.
Next in conjunction with Figure of description, concrete structure and the working principle of screw-type refrigerating system provided by the utility model and exhaust end base of oil injection threaded bolt formula compressor is described.It should be noted that, composed component and the working principle of screw-type refrigerating system provided by the utility model are identical with prior art, those skilled in the art can realize completely based on prior art, so only described in detail the lubrication technology at its inventive point exhaust end base of oil injection threaded bolt formula compressor start initial stage at this herein.In addition, in technological scheme described in this programme and background technique, same parts adopt identical reference character, and in Fig. 2 of Figure of description, arrow " → " represents the flow direction of refrigerant vapour in exhaust end base of oil injection threaded bolt formula compressor.
Refer to Fig. 2 and Fig. 3, wherein, Fig. 2 shows the sectional structure schematic diagram of exhaust end base of oil injection threaded bolt formula compressor embodiment provided by the utility model, and Fig. 3 shows A place close-up schematic view in Fig. 2.
As shown in Figure 2, exhaust end base of oil injection threaded bolt formula compressor 2 is hearts of refrigeration system, comprise casing 21, be packaged in a pair axis being parallel in casing 21 and intermeshing male rotor 22 and female rotor 23 by bearing and seal element, and the drive motor for driving male rotor 22 to rotate.When teeth groove and the intakeport 2 be opened on casing 21
inwhen communicating, air-breathing starts, and along with the rotation of rotor, teeth groove departs from intakeport 2
in, a pair tooth socket space is filled refrigerant vapour; Rotor continues to rotate, tooth and the teeth groove of two rotors engage each other, the compression chamber volume formed by casing 21 and intermeshing negative and positive rotor diminishes gradually, until negative and positive rotor turns is communicated with to compression chamber with the relief opening (not shown) be opened on casing 21, discharged by the refrigerant vapour after compressing, so namely complete air-breathing, compression and an exhaust process.
The intakeport 2 of this exhaust end base of oil injection threaded bolt formula compressor 2
into be opened on casing 21 and opening down, the inwall of this casing 21 is near intakeport 2
inplace offers oil storage tank 25, and the notch of this oil storage tank 25 upward.Particularly, as shown in Figure 3, this oil storage tank 25 is around intakeport 2
inintegrally casting takes shape in the annular oil storage tank 25 of casing 21 inwall, and structure is simple, compact and reasonable be easy to realize.
After exhaust end base of oil injection threaded bolt formula compressor 2 quits work, the lubricant oil 6 between rotor flows under the influence of gravity in oil storage tank 25.When compressor starts again, suction chamber 24 forms negative pressure, and refrigerant vapour is inhaled in suction chamber 24.Refrigerant vapour changes at suction chamber 24 and casing 21 internal face multiple impacts and flows to, and scan lubricant oil 6 liquid level in oil storage tank 25 along direction arrow " → " in Fig. 2 Suo Shi, lubricant oil 6 enters negative and positive rotor 22 inter-tooth volume together along with refrigerant vapour, between negative and positive rotor tooth, oil film is formed between the inwall of rotor and casing 21, the existence of this oil film can improve the lubrication effect at compressor start initial stage effectively, and absorb sound wave reduction noise, also can to prevent between negative and positive rotor and the Sintering Problem of both and casing 21 internal face simultaneously, thus ensure that the normal work of exhaust end base of oil injection threaded bolt formula compressor 2, extend its working life.
Further, this oil storage tank 25 is specially around intakeport 2
inannular oil storage tank 25, so arrange and can increase via intakeport 2
inenter the refrigerant vapour of rotor chamber and the area of contact of lubricant oil 6, refrigerant vapour then can be made to carry more lubricant oil 6 and carry out lubrication self-loopa, thus strengthen the lubrication of this lubrication system, cooling and noise reduction.
As shown in Figure 3, the bottom land 251 of this oil storage tank 25 is perpendicular to intakeport 2
inthe plane of axis, and with compared with at the bottom of isometric curved surface or arch groove, at the bottom of planar slot, the degree of depth of 251 is more shallow, so can reduce bottom land 251 and unserviceable lubricant oil 6 amount of being deposited on, thus improve the utilization ratio of lubricant oil 6.
In addition, the madial wall 252 of this oil storage tank 25 is also away from intakeport 2 on casing 21
inthe sidewall of side, be specially the curved surface seamlessly transitted with bottom land 251 and casing 21, leading role can be had to the refrigerant vapour carrying lubricant oil 6 like this, make it climb fast along casing 21 inwall and enter negative and positive rotor engagement place, shorten the time of the dry running of exhaust end base of oil injection threaded bolt formula compressor 2.
The outer side wall 253 of oil storage tank 25, i.e. close intakeport 2 on casing 21
inthe sidewall of side, for intakeport 2
inthe curved surface of interior walls be smooth transition, in like manner, leading role can be formed like this to refrigerant vapour, it is guided to flow through the whole liquid level of lubricant oil 6 in liquid storage tank, carry lubricant oil 6 amount to increasing refrigerant vapour, and the lubrication of the larger rotor to screw compressor 2 of lubricants capacity and bearing, noise reduction are better.
The foregoing is only preferred implementation of the present utility model, do not form the restriction to the utility model protection domain.Any do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within claims of the present utility model.
Claims (7)
1. an exhaust end base of oil injection threaded bolt formula compressor, comprise casing (21), be arranged at interior a pair axis being parallel of described casing (21) and intermeshing male rotor (22) and female rotor (23), and the driver part driving described male rotor to rotate, described casing (21) offers downward opening intakeport (2
in), it is characterized in that, described casing (21) inwall is near described intakeport (2
in) place offers oil storage tank (25), the notch of described oil storage tank (25) is upward.
2. exhaust end base of oil injection threaded bolt formula compressor as claimed in claim 1, it is characterized in that, described oil storage tank (25) is specially around described intakeport (2
in) annular oil storage tank.
3. exhaust end base of oil injection threaded bolt formula compressor as claimed in claim 1 or 2, it is characterized in that, the bottom land (251) of described oil storage tank (25) is perpendicular to described intakeport (2
in) plane of axis.
4. exhaust end base of oil injection threaded bolt formula compressor as claimed in claim 3, it is characterized in that, the madial wall (252) of described oil storage tank (25) is the curved surface be connected with described casing (21) interior walls be smooth transition.
5. exhaust end base of oil injection threaded bolt formula compressor as claimed in claim 4, it is characterized in that, the outer side wall (253) of described oil storage tank (25) is and described intakeport (2
in) curved surface of interior walls be smooth transition.
6. exhaust end base of oil injection threaded bolt formula compressor as claimed in claim 1, it is characterized in that, described oil storage tank (25) casting is on the inwall of described casing (21).
7. a screw-type refrigerating system, comprise and flow to along refrigeration working medium the vaporizer, screw compressor, oil separator, condenser and the throttle valve that are communicated with successively and form refrigeration cycle, it is characterized in that, described screw compressor is specially the exhaust end base of oil injection threaded bolt formula compressor according to any one of claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420646284.7U CN204226200U (en) | 2014-10-31 | 2014-10-31 | A kind of screw-type refrigerating system and exhaust end base of oil injection threaded bolt formula compressor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420646284.7U CN204226200U (en) | 2014-10-31 | 2014-10-31 | A kind of screw-type refrigerating system and exhaust end base of oil injection threaded bolt formula compressor thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204226200U true CN204226200U (en) | 2015-03-25 |
Family
ID=52924304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420646284.7U Expired - Fee Related CN204226200U (en) | 2014-10-31 | 2014-10-31 | A kind of screw-type refrigerating system and exhaust end base of oil injection threaded bolt formula compressor thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204226200U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019104811A1 (en) * | 2017-11-30 | 2019-06-06 | 格力电器（武汉）有限公司 | Screw compressor, air conditioning device, and volume efficiency adjusting method for screw compressor |
| CN111094750A (en) * | 2017-09-04 | 2020-05-01 | 株式会社日立产机系统 | Screw compressor |
| CN115045835A (en) * | 2022-06-28 | 2022-09-13 | 德耐尔能源装备有限公司 | High-efficient oil spout screw rod host computer |
-
2014
- 2014-10-31 CN CN201420646284.7U patent/CN204226200U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111094750A (en) * | 2017-09-04 | 2020-05-01 | 株式会社日立产机系统 | Screw compressor |
| CN111094750B (en) * | 2017-09-04 | 2022-04-15 | 株式会社日立产机系统 | Screw compressor |
| WO2019104811A1 (en) * | 2017-11-30 | 2019-06-06 | 格力电器（武汉）有限公司 | Screw compressor, air conditioning device, and volume efficiency adjusting method for screw compressor |
| CN115045835A (en) * | 2022-06-28 | 2022-09-13 | 德耐尔能源装备有限公司 | High-efficient oil spout screw rod host computer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Yongda road in Shandong city of Yantai province Fushan hi tech Industrial Zone No. 720 Co-patentee after: Ebara Refrigeration Equipment Patentee after: Ebara (Chinese) Co. Ltd and cooling system Address before: Yongda road 265500 Shandong province Yantai Fushan hi tech Industrial Zone No. 720 Co-patentee before: Ebara Refrigeration Equipment Patentee before: Renyuan Air Conditioner Equipment Co., Ltd., Yantai City |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150325 Termination date: 20201031 |