CN107246389A - Screw compressor - Google Patents
Screw compressor Download PDFInfo
- Publication number
- CN107246389A CN107246389A CN201710691341.1A CN201710691341A CN107246389A CN 107246389 A CN107246389 A CN 107246389A CN 201710691341 A CN201710691341 A CN 201710691341A CN 107246389 A CN107246389 A CN 107246389A
- Authority
- CN
- China
- Prior art keywords
- casing
- low pressure
- pressure chamber
- embedded
- drainback passage
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
- F04C18/0269—Details concerning the involute wraps
- F04C18/0292—Ports or channels located in the wrap
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/80—Other components
- F04C2240/806—Pipes for fluids; Fittings therefor
Abstract
The present invention provides a kind of screw compressor, including casing, envelope are located at the end cap at casing one end open and the fixed scroll being arranged in casing, orbiter, wear-resistant pad, cross slip-ring, support, axle and motor.Orbiter, wear-resistant pad and support enclose to form bearing bore.Support and casing enclose to form low pressure chamber.Fixed scroll encloses to form high pressure chest with end cap.Fixed scroll is provided with drainback passage.High pressure chest is connected by drainback passage with bearing bore.Bearing bore is connected with low pressure chamber.The straight pin or embedded radial section that drainback passage is embedded in radial direction trimming are that the pin or embedded radial section of triangle are polygonal pins.Present invention process is simple；It is simple in construction；Reliability is high；It can prevent excessive refrigerant from entering low pressure chamber.
Description
Technical field
The present invention relates to compressor, more particularly to screw compressor.
Background technology
The lubricating oil ratio needs mixed in air-conditioning system with refrigerant are moderate, and lubricating oil crosses at most influence evaporator and condensation
The heat exchange efficiency of device, it is fragile that lubricating oil crosses compressor moving component lack of lubrication at least；The solution party of electric scroll compressor
Case is that the refrigerant allowed in discharge chamber is separated with lubricating oil mixed gas, and lubricating oil is led back to low pressure chamber rather than discharged with refrigerant and is pressed
Contracting machine, can so improve the heat exchange efficiency of evaporator and condenser, there is appropriate oil lubrication compressor again；But high pressure
Refrigerant and lubricating oil separation in chamber are not very thorough, and the lubricating oil for leading back to low pressure chamber all carries refrigerant, if excessive is cold
Matchmaker, which enters low pressure chamber, can have a strong impact on the operating efficiency of compressor.
The lubricating oil separated in high pressure chest is led back into low pressure chamber various ways, the valving that for example pressure difference is opened
Or minimum through hole can, but all there are problems that complex process, reliability not.
The content of the invention
Based on this, it is necessary to lead back to the lubricating oil separated in high pressure chest in low pressure chamber for existing screw compressor
When has the deficiency of complex process and reliability not, and there is provided the screw compressor that a kind of technique is simple, reliability is high.
A kind of screw compressor, including casing, envelope are located at the end cap at casing one end open and are arranged in casing
Fixed scroll, orbiter, wear-resistant pad, cross slip-ring, support, axle and motor.
The orbiter, wear-resistant pad and support enclose to form bearing bore.The support and casing enclose to form low pressure chamber.
The fixed scroll encloses to form high pressure chest with the end cap.The fixed scroll is provided with drainback passage.The high pressure chest leads to
The drainback passage is crossed to connect with the bearing bore.The bearing bore is connected with the low pressure chamber.The drainback passage is embedded in
The straight pin of radial direction trimming or embedded radial section are that the pin or embedded radial section of triangle are polygonal pins.
In one of the embodiments, the screw compressor also includes air inlet and steam vent.
The casing is provided with air inlet.The end cap is provided with steam vent.The steam vent is connected with the high pressure chest.
The air inlet is connected with the low pressure chamber.
Advantages of the present invention and its advantage：
（1）The drainback passage of the present invention is bigger than the diameter of the back pressure inlet channel of existing screw compressor, the circle being relatively large in diameter
The less circular deep hole of shape deep hole diameter group will be easily worked, and technique is simpler.
（2）The present invention is simpler than the valve device structure that pressured difference is opened, and reliability will height.
（3）The present invention the pin that the straight pin or embedded radial section that drainback passage is embedded in radial direction trimming are triangles,
Or embedded radial section is polygonal pin, prevents excessive refrigerant from entering low pressure chamber.The operating efficiency of the present invention is provided.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is the sectional view of drainback passage and the straight pin of radial direction trimming in Fig. 1.
Fig. 3 is the sectional views that drainback passage and section are polygonal straight pin in Fig. 1.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give the preferred embodiment of the present invention.But, the present invention can be realized in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose that these embodiments are provided be make to the disclosure more it is thorough comprehensively.
It should be noted that when element is referred to as " setting " in another element, it can be directly in another element
Go up or there can also be element placed in the middle.When an element be considered as with another element " being connected ", it can be direct
Another element is connected to, or may be simultaneously present centering elements.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of body embodiment, it is not intended that in the limitation present invention.
Refer to Fig. 1 and Fig. 2, a kind of screw compressor, including casing 1, bearing bore 5, low pressure chamber 51, high pressure chest 53, return
Oily passage 7, the straight pin 71 of radial direction trimming, envelope are located at end cap 11, fixed scroll 13, orbiter at the one end open of casing 1
15th, wear-resistant pad 17, cross slip-ring 19, support 3, axle 31, motor 33, air inlet 35 and steam vent 37.
Wherein, fixed scroll 13, orbiter 15, wear-resistant pad 17, cross slip-ring 19, support 3, axle 31 and motor 33 are all set
Put in casing 1.
Specifically, orbiter 15, wear-resistant pad 17 and support 3 enclose to form bearing bore 5.Support 3 and casing 1 enclose to be formed
Low pressure chamber 51.Fixed scroll 13 encloses to form high pressure chest 53 with end cap 11.Fixed scroll 13 is provided with drainback passage 7.High pressure chest
53 are connected by drainback passage 7 with bearing bore 5.Bearing bore 5 is connected with low pressure chamber 51.Drainback passage 7 is embedded in as shown in Figure 2
The straight pin 71 of radial direction trimming.
Wherein, casing 1 is provided with air inlet 35.End cap 11 is provided with steam vent 37.
Specifically, steam vent 37 is connected with high pressure chest 53.Air inlet 35 is connected with low pressure chamber 51.
It should be noted that：, can also be embedding except the straight pin 71 of radial direction trimming can be embedded in drainback passage 7 of the present invention
Enter be radial section be triangle pin, what can also be embedded in is that radial section as shown in Figure 3 is polygonal pin 73.
Advantages of the present invention and its advantage：
（1）The drainback passage 7 of the present invention is bigger than the diameter of the back pressure inlet channel of existing screw compressor, the circle being relatively large in diameter
The less circular deep hole of shape deep hole diameter group will be easily worked, and technique is simpler.
（2）The present invention is simpler than the valve device structure that pressured difference is opened, and reliability will height.
（3）The present invention is triangle in the straight pin 71 or embedded radial section that drainback passage 7 is embedded in radial direction trimming
Sell or embedded radial section is polygonal pin 73, prevent excessive refrigerant from entering low pressure chamber 51.The work effect of the present invention is provided
Rate.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (2)
1. a kind of screw compressor, including casing, envelope are located at the end cap at casing one end open and are arranged on quiet in casing
Scroll plate, orbiter, wear-resistant pad, cross slip-ring, support, axle and motor, the orbiter, wear-resistant pad and support enclose shape
Into bearing bore, the support and casing enclose to form low pressure chamber, and the fixed scroll encloses to form high pressure chest with the end cap, its
It is characterised by, the fixed scroll is provided with drainback passage, the high pressure chest is connected by the drainback passage and the bearing bore
Logical, the bearing bore is connected with the low pressure chamber, and the straight pin or embedded radial direction that the drainback passage is embedded in radial direction trimming are cut
Face is that the pin or embedded radial section of triangle are polygonal pins.
2. screw compressor according to claim 1, it is characterised in that the screw compressor also includes air inlet and row
Stomata, the casing is provided with air inlet, and the end cap is provided with steam vent, and the steam vent is connected with the high pressure chest, institute
Air inlet is stated to connect with the low pressure chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710691341.1A CN107246389A (en) | 2017-08-14 | 2017-08-14 | Screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710691341.1A CN107246389A (en) | 2017-08-14 | 2017-08-14 | Screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107246389A true CN107246389A (en) | 2017-10-13 |
Family
ID=60012797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710691341.1A Pending CN107246389A (en) | 2017-08-14 | 2017-08-14 | Screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107246389A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5110268A (en) * | 1989-12-04 | 1992-05-05 | Hitachi, Ltd. | Lubricant supply system of a scroll fluid machine |
| JP2006144604A (en) * | 2004-11-17 | 2006-06-08 | Mitsubishi Heavy Ind Ltd | Compressor |
| CN101865133A (en) * | 2009-02-20 | 2010-10-20 | 三洋电机株式会社 | Scroll compressor |
| CN204824273U (en) * | 2015-05-23 | 2015-12-02 | 厦门建霖工业有限公司 | RO machine orifice plug |
| CN105649992A (en) * | 2016-01-18 | 2016-06-08 | 广东美的暖通设备有限公司 | Method for reducing backpressure fluctuation of scroll compressor and scroll compressor |
| CN205689427U (en) * | 2016-06-08 | 2016-11-16 | 湖南贝特新能源科技有限公司 | Screw compressor |
| CN207064237U (en) * | 2017-08-14 | 2018-03-02 | 湖南贝特新能源科技有限公司 | Screw compressor |
-
2017
- 2017-08-14 CN CN201710691341.1A patent/CN107246389A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5110268A (en) * | 1989-12-04 | 1992-05-05 | Hitachi, Ltd. | Lubricant supply system of a scroll fluid machine |
| JP2006144604A (en) * | 2004-11-17 | 2006-06-08 | Mitsubishi Heavy Ind Ltd | Compressor |
| CN101865133A (en) * | 2009-02-20 | 2010-10-20 | 三洋电机株式会社 | Scroll compressor |
| CN204824273U (en) * | 2015-05-23 | 2015-12-02 | 厦门建霖工业有限公司 | RO machine orifice plug |
| CN105649992A (en) * | 2016-01-18 | 2016-06-08 | 广东美的暖通设备有限公司 | Method for reducing backpressure fluctuation of scroll compressor and scroll compressor |
| CN205689427U (en) * | 2016-06-08 | 2016-11-16 | 湖南贝特新能源科技有限公司 | Screw compressor |
| CN207064237U (en) * | 2017-08-14 | 2018-03-02 | 湖南贝特新能源科技有限公司 | Screw compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171013 |