CN110259690A - A kind of exhaust outlet and its design method of composite gear-type compressor - Google Patents

A kind of exhaust outlet and its design method of composite gear-type compressor Download PDF

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Publication number
CN110259690A
CN110259690A CN201910670489.6A CN201910670489A CN110259690A CN 110259690 A CN110259690 A CN 110259690A CN 201910670489 A CN201910670489 A CN 201910670489A CN 110259690 A CN110259690 A CN 110259690A
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China
Prior art keywords
exhaust outlet
exhaust
edge curve
curve
tooth socket
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CN201910670489.6A
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CN110259690B (en
Inventor
王君
李祥艳
许超
赵胜
李雪琴
武萌
奚周瑾
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China University of Petroleum East China
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China University of Petroleum East China
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    • 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
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/18—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
    • 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
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

The invention discloses a kind of exhaust outlets of composite gear-type compressor, exhaust outlet (401) is provided on exhaust end cover (4), and the contour curve of exhaust outlet (401) includes: left edge curve EF, right hand edge curve GH, top edge curve EH, lower edge curve FG, left upper apex E, bottom left vertex F, right vertices H and bottom right vertex G；Left edge curve EF, right hand edge curve GH and top edge curve EH are respectively 3 sections of circular arcs, and lower edge curve FG is the partial trace of the first cycloid AB of the first tooth socket (101)；Exhaust outlet (401) area proposed is big, exhaust velocity is low, pressure at expulsion loss is small, effectively reduce leakage of the high pressure gas of compressor wasted work and exhaust ports at rotor end-face, the clearance volume formed after exhaust is small, volumetric efficiency is high, while making compressor interior volume specific ratio big.

Description

A kind of exhaust outlet and its design method of composite gear-type compressor
Technical field
The invention belongs to compressor field of engineering technology, in particular to the exhaust outlet of a kind of composite gear-type compressor and its set Meter method.
Background technique
Composite gear-type compressor is a kind of novel positive displacement compressor, and primary structure is by left female rotor (1), right convex rotor (2), shell (3) and exhaust end cover (4) form, and exhaust outlet (401) are opened up on exhaust end cover (4), wherein left female rotor (1) is by more A uniformly distributed tooth socket and Left Drive tooth composition, right convex rotor (2) are made of multiple uniformly distributed double wedges and right driving cog；Its work is former Reason is: right convex rotor (2) drives left female rotor (1) to synchronize incorgruous dual AC power and moves, pass through left female rotor by driving cog (1), the cyclically-varying for the closed working chamber volume that right convex rotor (2) and shell (3) are formed, so realize air-breathing, compression and The overall process of exhaust；Composite gear-type compressor has the characteristics that structure is simple, components are few, small in size and driving torque is big, answers For refrigeration air-conditioner and internal combustion engine industry.
Influence of the exhaust outlet of composite gear-type compressor to its working performance is very big, the exhaust of existing composite gear-type compressor The have no basis specific molded line of tooth socket and double wedge of mouth is designed, and causes exhaust outlet gas flow rate high, pressure at expulsion loss is big, pressure Contracting machine wasted work is high, and leakage rate of the high pressure gas of exhaust outlet at rotor end-face is big, and the clearance volume formed after exhaust is big. Chinese patent (Sichuan Shen Jinfeng, Liu Rongfu, Wang Jun, Liu Jicheng composite gear tooth-type gas compressor [P]: CN1191940, The molded line of a kind of tooth socket and double wedge 1998-09-02.) is proposed, but there is no rationally design out to arrange according to the molded line proposed The shape of port, so that the mixing of high-low pressure gas repeatedly occurs in exhaust process, gas flow rate is high, and pressure at expulsion loss is big, increases Add compressor wasted work, while being vented later period double wedge to block exhaust outlet generation, increases leakage of the gas at rotor end-face Amount, the clearance volume generated after exhaust also increase accordingly.
Summary of the invention
For the exhaust outlet of the above existing composite gear-type compressor, that there are gas flow rates is big, leakage is big, clearance volume is big Problem, the present invention propose the exhaust outlet and its design method of a kind of composite gear-type compressor, according to set interior volume specific ratio, The profile of one tooth socket and the first double wedge constructs the contour curve of exhaust outlet；The present invention is constructed using multi-section circular arc and cycloid The vent of the contour curve of exhaust outlet, building is more reasonable, and exhaust velocity is low, pressure at expulsion loss is small；It is proposed A kind of composite gear-type compressor exhaust outlet can effectively reduce leakage rate of the high pressure gas of exhaust outlet at rotor end-face, simultaneously The clearance volume formed after exhaust is small.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of exhaust outlet of composite gear-type compressor, exhaust outlet are provided on exhaust end cover, a kind of combined gear teeth Compressor, comprising: left female rotor, right convex rotor, shell and exhaust end cover；Left female rotor include: the first tooth socket, the second tooth socket and The Left Drive tooth that quantity is 20~42, right convex rotor include: the right transmission that the first double wedge, the second double wedge and quantity are 20~42 Tooth；In the course of work for synchronizing incorgruous dual AC power movement, the first tooth socket, the second tooth socket and the Left Drive tooth of left female rotor, point It is not meshed with the first double wedge of right convex rotor, the second double wedge and right driving cog；The contour curve of the exhaust outlet includes: a left side Boundary curve EF, right hand edge curve GH, top edge curve EH, lower edge curve FG, left upper apex E, bottom left vertex F, upper right top Point H and bottom right vertex G；Each section of curve uses radius to connect for the round-corner transition of r；Left edge curve EF, right hand edge curve GH and Top edge curve EH is respectively 3 sections of circular arcs, and lower edge curve FG is the partial trace of the first cycloid AB of the first tooth socket；Described Exhaust outlet and left element volume V1Lifetime in left element volume V1With right element volume V2Before connection.
A kind of design method of the exhaust outlet contour curve of the composite gear-type compressor: the following steps are included:
1) according to set interior volume specific ratio, by left element volume V1With right element volume V2Determine discharge chamber volume Vd, into And determine left element volume V1With right element volume V2The relative position of first tooth socket and the first double wedge when connection exhaust, it is final true Determine exhaust outlet and left element volume V1Connection when the first tooth socket and the first double wedge relative position；
2) the bottom left vertex F of exhaust outlet is by the first cycloid AB on tooth socket and with centre of gyration O1It is R for center of circle radius1's The intersection point of circular arc determines；The bottom right vertex G of exhaust outlet is by the first cycloid AB on tooth socket and with centre of gyration O1For center of circle radius For R2Circular arc intersection point determine, the left upper apex E of exhaust outlet is by with centre of gyration O2It is R for center of circle radius3Circular arc with return Turn center O1It is R for center of circle radius1Circular arc intersection point determine, the right vertices H of exhaust outlet is by with centre of gyration O2For the center of circle half Diameter is R3Circular arc with centre of gyration O1It is R for center of circle radius2Circular arc intersection point determine；
3) left edge curve EF is with centre of gyration O1It is R for center of circle radius1Circular arc, right hand edge curve GH be with revolution Center O1It is R for center of circle radius1Circular arc, top edge curve EH be with centre of gyration O2It is R for center of circle radius3Circular arc, below Edge curve FG is the partial trace of the first cycloid AB of the first tooth socket.
Exhaust outlet described in a kind of composite gear-type compressor use.
The invention has the benefit that
1. a kind of exhaust port area of the composite gear-type compressor proposed is big, exhaust velocity is low, pressure at expulsion loss is small, Effectively reduce compressor wasted work.
2. a kind of exhaust outlet of the composite gear-type compressor proposed is not opened in compression process, in exhaust process It is complete to open, leakage rate of the high pressure gas of exhaust outlet at rotor end-face can be effectively reduced.
3. a kind of exhaust outlet of the composite gear-type compressor proposed makes the clearance volume formed after exhaust small, Volumetric efficiency is high.
4. a kind of exhaust outlet of the composite gear-type compressor proposed makes compressor interior volume specific ratio big.
Detailed description of the invention
Fig. 1 is a kind of structure chart of composite gear-type compressor.
Fig. 2 is the front view of exhaust end cover (4).
Fig. 3 is the design process figure of exhaust outlet (401).
Fig. 4 is that a kind of exhaust outlet of composite gear-type compressor will open figure.
Fig. 5 is a kind of exhaust process figure of composite gear-type compressor.
Fig. 6 is that a kind of exhaust process of composite gear-type compressor terminates figure.
In figure: 1-left female rotor (1)；2-right convex rotors (2)；101-the first tooth socket (101)；102-the second tooth socket (102)；201-the first double wedge (201)；202-the second double wedge (202)；301-air entries (301)；401-exhaust outlets (401)；R1- left bottom of the tooth radius of circle；R2- pitch radius；R3- right radius of addendum.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
As shown in Figure 1, being a kind of structure chart of composite gear-type compressor, comprising: left female rotor 1, right convex rotor 2, shell 3 With exhaust end cover 4, exhaust outlet 401 is provided on exhaust end cover 4, be capable of forming during the work time suction chamber, etc. hold closing chamber, Compression chamber and discharge chamber, be respectively used to gas air-breathing, etc. appearances conveying, compression and exhaust process；The volume of the suction chamber It is gradually increased and is connected always with air entry 301, the equal constancy of volume for holding closing chamber and closing, the compression chamber Volume confinement and be gradually reduced, the volume of the discharge chamber is gradually reduced and is connected always with exhaust outlet 401.
As shown in Fig. 2, being the front view of exhaust end cover 4, exhaust outlet 401 is provided on exhaust end cover 4, the exhaust outlet 401 contour curve includes: left edge curve EF, right hand edge curve GH, top edge curve EH, lower edge curve FG, upper left top Point E, bottom left vertex F, right vertices H and bottom right vertex G；Each section of curve uses radius to connect for the round-corner transition of r；Left edge is bent Line EF, right hand edge curve GH and top edge curve EH are respectively 3 sections of circular arcs, and lower edge curve FG is the first of the first tooth socket 101 The partial trace of cycloid AB；The exhaust outlet 401 proposed is designed according to the specific molded line of tooth socket and double wedge, the exhaust of design The shape of mouth 401 is more reasonable, and exhaust port area is big, and exhaust velocity is low, pressure at expulsion loss is small, effectively reduces compressor consumption Function.
As shown in figure 3, being the design process figure of exhaust outlet 401, a kind of exhaust outlet 401 of composite gear-type compressor The design method of contour curve: the following steps are included:
1) according to set interior volume specific ratio, by left element volume V1With right element volume V2Determine discharge chamber volume Vd, into And determine left element volume V1With right element volume V2The relative position of first tooth socket 101 and the first double wedge 201 when connection exhaust, It is final to determine exhaust outlet 401 and left element volume V1Connection when the first tooth socket 101 and the first double wedge 201 relative position；
2) the bottom left vertex F of exhaust outlet 401 is by the first cycloid AB on tooth socket 101 and with centre of gyration O1For center of circle radius For R1Circular arc intersection point determine；The bottom right vertex G of exhaust outlet 401 is by the first cycloid AB on tooth socket 101 and with centre of gyration O1 It is R for center of circle radius2Circular arc intersection point determine, the left upper apex E of exhaust outlet 401 is by with centre of gyration O2It is for center of circle radius R3Circular arc with centre of gyration O1It is R for center of circle radius1The intersection point of circular arc determine, the right vertices H of exhaust outlet 401 by with Centre of gyration O2It is R for center of circle radius3Circular arc with centre of gyration O1It is R for center of circle radius2Circle arc intersection point determine；
3) left edge curve EF is with centre of gyration O1It is R for center of circle radius1Circular arc, right hand edge curve GH be with revolution Center O1It is R for center of circle radius1Circular arc, top edge curve EH be with centre of gyration O2It is R for center of circle radius3Circular arc, below Edge curve FG is the partial trace of the first cycloid AB of the first tooth socket 101.
As shown in figure 4, the exhaust outlet for a kind of composite gear-type compressor will open figure, at this point, exhaust outlet 401 will be beaten It opens, after exhaust outlet 401 is opened, left element volume V1It is connected to first with exhaust outlet 401, to left element volume V1Interior pressure balance Afterwards, left element volume V1Pressure and right element volume V2Pressure it is equal, then left element volume V1Again with right element volume V2 Connection, avoids left element volume V1With right element volume V2It is directly connected to the mixed process for being formed by high-low pressure gas twice, The thermal procession in exhaust process is simplified, the wasted work of compressor is reduced, improves the efficiency of compressor.
As shown in figure 5, being a kind of exhaust process figure of composite gear-type compressor, exhaust outlet 401 fully opened, and gas is from row The smooth discharge of port 401, exhaust port area is big, and exhaust velocity is low, pressure at expulsion loss is small, effectively reduces compressor wasted work； Exhaust outlet is not opened in compression process, is opened entirely in exhaust process, and the high pressure gas that can effectively reduce exhaust outlet is turning The leakage rate of sub- endface.
As shown in fig. 6, terminate figure for the exhaust process of composite gear-type compressor a kind of, after exhaust, exhaust outlet 401 and When close, avoid the high pressure gas in exhaust passage flow back into suction chamber reduce compressor inspiratory capacity, what is proposed is compound The clearance volume that the exhaust outlet 401 of wheel tooth compressors is formed after exhaust is small, and volumetric efficiency is high；The one kind proposed is compound The exhaust outlet of wheel tooth compressors makes compressor interior volume specific ratio big.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.

Claims (3)

1. a kind of exhaust outlet of composite gear-type compressor, it is characterized in that: exhaust outlet (401) is provided on exhaust end cover (4), it is described A kind of composite gear-type compressor, comprising: left female rotor (1), right convex rotor (2), shell (3) and exhaust end cover (4)；It is recessed turn left Sub (1) includes: the Left Drive tooth (103) that the first tooth socket (101), the second tooth socket (102) and quantity are 20~42, right convex rotor It (2) include: the right driving cog (203) that the first double wedge (201), the second double wedge (202) and quantity are 20~42；It is incorgruous double synchronizing In the course of work of rotary motion, the first tooth socket (101), the second tooth socket (102) and the Left Drive tooth (103) of left female rotor (1), It is meshed respectively with the first double wedge (201) of right convex rotor (2), the second double wedge (202) and right driving cog (203)；The row The contour curve of port (401) include: left edge curve EF, right hand edge curve GH, top edge curve EH, lower edge curve FG, Left upper apex E, bottom left vertex F, right vertices H and bottom right vertex G；Each section of curve uses radius to connect for the round-corner transition of r；It is left Boundary curve EF, right hand edge curve GH and top edge curve EH are respectively 3 sections of circular arcs, and lower edge curve FG is the first tooth socket (101) partial trace of the first cycloid AB；The exhaust outlet (401) and left element volume V1Lifetime in Zuo Jiyuan Volume V1With right element volume V2Before connection.
2. a kind of design method of exhaust outlet (401) contour curve of composite gear-type compressor according to claim 1: its It is characterized in: the following steps are included:
1) according to set interior volume specific ratio, by left element volume V1With right element volume V2Determine discharge chamber volume Vd, and then really Fixed left element volume V1With right element volume V2The relative position of first tooth socket (101) and the first double wedge (201) when connection exhaust, It is final to determine exhaust outlet (401) and left element volume V1Connection when the first tooth socket (101) and the first double wedge (201) opposite position It sets；
2) the bottom left vertex F of exhaust outlet (401) is by the first cycloid AB on tooth socket (101) and with centre of gyration O1For center of circle radius For R1Circular arc intersection point determine；The bottom right vertex G of exhaust outlet (401) is by the first cycloid AB on tooth socket (101) and with revolution Center O1It is R for center of circle radius2Circular arc intersection point determine, the left upper apex E of exhaust outlet (401) is by with centre of gyration O2For circle Heart radius is R3Circular arc with centre of gyration O1It is R for center of circle radius1Circular arc intersection point determine, the upper right of exhaust outlet (401) Vertex H is by with centre of gyration O2It is R for center of circle radius3Circular arc with centre of gyration O1It is R for center of circle radius2Circular arc intersection point It determines；
3) left edge curve EF is with centre of gyration O1It is R for center of circle radius1Circular arc, right hand edge curve GH be with the centre of gyration O1It is R for center of circle radius1Circular arc, top edge curve EH be with centre of gyration O2It is R for center of circle radius3Circular arc, lower edge is bent Line FG is the partial trace of the first cycloid AB of the first tooth socket (101).
3. a kind of composite gear-type compressor, it is characterized in that: using exhaust outlet (401) as claimed in claim 2.
CN201910670489.6A 2019-07-24 2019-07-24 Exhaust port of composite gear tooth compressor and design method thereof Active CN110259690B (en)

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CN201910670489.6A CN110259690B (en) 2019-07-24 2019-07-24 Exhaust port of composite gear tooth compressor and design method thereof

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CN110259690B CN110259690B (en) 2024-01-02

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6352420B1 (en) * 1998-03-11 2002-03-05 Osen Science & Technology Co., Ltd. Complex teeth-type gas compressor
CN2851655Y (en) * 2005-09-09 2006-12-27 沈锦丰 Combined rotor type air compressor
CN103807171A (en) * 2012-11-07 2014-05-21 廖振宜 Chinese style rotor type gas compressor
CN106640629A (en) * 2016-08-30 2017-05-10 重庆红宇精密工业有限责任公司 Oil pump rotor
CN210686316U (en) * 2019-07-24 2020-06-05 中国石油大学(华东) Exhaust port of composite gear tooth compressor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6352420B1 (en) * 1998-03-11 2002-03-05 Osen Science & Technology Co., Ltd. Complex teeth-type gas compressor
CN2851655Y (en) * 2005-09-09 2006-12-27 沈锦丰 Combined rotor type air compressor
CN103807171A (en) * 2012-11-07 2014-05-21 廖振宜 Chinese style rotor type gas compressor
CN106640629A (en) * 2016-08-30 2017-05-10 重庆红宇精密工业有限责任公司 Oil pump rotor
CN210686316U (en) * 2019-07-24 2020-06-05 中国石油大学(华东) Exhaust port of composite gear tooth compressor

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