CN209012053U - Screw compressor - Google Patents
Screw compressor Download PDFInfo
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- CN209012053U CN209012053U CN201821351106.6U CN201821351106U CN209012053U CN 209012053 U CN209012053 U CN 209012053U CN 201821351106 U CN201821351106 U CN 201821351106U CN 209012053 U CN209012053 U CN 209012053U
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- return pipe
- oil return
- oil
- passage
- screw compressor
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Abstract
The utility model relates to a kind of screw compressors.The fixed scroll of the compressor is equipped with the drainback passage for the shoe cream room to be connected to low pressure chamber, the inside of the drainback passage is equipped with oil return pipe, the oil return pipe is equipped with for making the lubricating oil in shoe cream room enter the oil transportation hole of low pressure chamber, and the sealing element for preventing high pressure gas from entering the low pressure chamber by drainback passage is equipped between the oil return pipe and the inner wall of drainback passage.In above-mentioned screw compressor, oil return pipe is mounted in the inside of fixed scroll.Oil return pipe directly can be pressed into together drainback passage together with sealing element by external force.Whole installation process is efficient and convenient.Due to being equipped with sealing element, so that high pressure gas will not enter low pressure chamber.The mounting means of this sealing element is efficient and convenient, and the sealing effect of the sealing structure formed is good.
Description
Technical field
The utility model relates to field of Refrigeration and Air-conditioning, more particularly to screw compressor.
Background technique
The working principle of traditional screw compressor are as follows: be engaged with each other and to be formed by movable orbiting scroll with scroll wrap and fixed scroll
Multiple compression chambers.Crankshaft drives movable orbiting scroll to be eccentrically rotated translation relative to fixed scroll, so that each compression chamber is mobile to central side
And it is gradually reduced volume.To realize the compression of cavity fluid.Screw compressor is widely used in gas because of the high revolving speed of its high efficiency
Vehicle field of Refrigeration and Air-conditioning.
When turbo compressor under normal state, need to fill a certain amount of lubricating oil to guarantee compressor mechanical friction pair and axis
The cooling and lubricating and the oil seal at vortex between cog, sealing element for holding equal components.However, when the compressor is operated, inside
Lubricating oil can enter together air-conditioning system refrigerant line with refrigerant.Into this parts of lubricating oil in refrigerant line
It can generally accumulate in the lower heat exchange manifold in relative position.It will lead to a series of adverse effects in this way, such as: 1. lubricating oil
Heat exchange manifold inner space is occupied, reduces refrigerant heat exchanger area, influences heat exchanger heat exchange amount, lead to air-conditioning system refrigerating capacity
It reduces；2. lubricating oil is deposited on exchanger base, compressor can not be returned to, it is bad to easily lead to compressor friction lubricating, power consumption
Increase, compressor damage is resulted even in when serious.
Therefore, screw compressor, which needs to design, oil-returning structure.Parts of lubricating oil and refrigerant are divided by oil-returning structure
From recycling and be deposited in compressor.To ensure that the oil recycle ratio of air-conditioning system is kept in the reasonable scope, and each friction is secondary
Lubricate good and good seal.Excessive lubricating oil is avoided to enter influence systematic entirety energy in air-conditioning system heat exchanger.
Currently, the oil-returning structure in screw compressor generally comprises oil distributing pipe, shoe cream room and oil return pipe.Existing oil return knot
Structure design is not reasonable, so that the installation of oil return pipe is not convenient enough, and poor sealing performance, is easy to make the high pressure gas of exhaust end cover
Into the low pressure chamber of fixed scroll.
Utility model content
Based on this, it is necessary to aiming at the problem that poor sealing performance, provide a kind of screw compressor.
A kind of screw compressor, including exhaust end cover, fixed scroll and the bracket set gradually, the inner cavity of the bracket with
Low pressure chamber is collectively formed in the inner cavity of fixed scroll, is equipped in the exhaust end cover by the oil distributing pipe of Oil-gas Separation and is used for storage point
The shoe cream room for the lubricating oil isolated in oil pipe, the fixed scroll are equipped with the oil return for the shoe cream room to be connected to low pressure chamber
Channel, the inside of the drainback passage are equipped with oil return pipe, and the oil return pipe is equipped with low for entering the lubricating oil in shoe cream room
The oil transportation hole for pressing chamber, being equipped between the oil return pipe and the inner wall of drainback passage prevents the high pressure gas in exhaust end cover by oil return
Channel enters the sealing element of the low pressure chamber.
In above-mentioned screw compressor, oil return pipe is mounted in the inside of fixed scroll.Directly oil return pipe can be connected by external force
It is pressed into drainback passage together with sealing element.Due to be equipped with sealing element so that the high pressure gas of exhaust end cover will not enter it is low
Press chamber.The mounting means of this sealing element is efficient and convenient, and the sealing effect of the sealing structure formed is good.
The drainback passage includes along the axial passage of fixed scroll being axially arranged and edge in one of the embodiments,
One end of the radial passage of fixed scroll being arranged radially, the axial passage is connected to by radial passage with the low pressure chamber, institute
The other end for stating axial passage is connected to shoe cream room.Radial passage makes oil return form radial spray state and enters low pressure chamber and refrigeration
Agent is sufficiently mixed, and promotes lubricant effect.
The oil return pipe is mounted in the axial passage in one of the embodiments, and the radial passage setting exists
One end of oil return pipe, one end of the radial passage are connected to the axial passage, and the other end of the radial passage is towards institute
State low pressure chamber.
Be equipped in the axial passage in one of the embodiments, for position of the oil return pipe in axial passage into
The fixed position limiting structure of row.
The oil return pipe is oil-inlet end, the oil return pipe close to one end of the shoe cream room in one of the embodiments,
It is oil outlet close to one end of the low pressure chamber, is provided with filter element at the oil-inlet end of the oil return pipe.
The filter element is filter screen, one end of the filter screen and the oil return pipe in one of the embodiments,
Oil-inlet end between there is cushion chamber, the other end of the filter screen covers a part of pipe shaft of oil return pipe, the filter screen
Integral structure is formed by plastic packaging with oil return pipe.
The sealing element is sealing ring, the corresponding filter screen of the pipe shaft of the oil return pipe in one of the embodiments,
On be provided with annular mounting groove, the sealing ring is sheathed on the mounting groove, the lateral wall of the sealing ring and drainback passage
Inner wall contact.
The oil transportation hole is pore in one of the embodiments,.
The oil return pipe is the capillary with multiple radial spray pores in one of the embodiments,.
The quantity of the radial passage is multiple in one of the embodiments, multiple radial sprays with the oil return pipe
The quantity for drenching pore is corresponding.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the screw compressor of the embodiments of the present invention；
Fig. 2 is the set-up mode schematic diagram of the oil distributing pipe of the screw compressor of the embodiments of the present invention；
Fig. 3 is the schematic diagram of the oil return pipe of the screw compressor of the embodiments of the present invention；
Fig. 4 is that axial passage and radial passage are arranged in the fixed scroll of the screw compressor of the embodiments of the present invention
Cross-sectional view；
Fig. 5 is the perspective view of the fixed scroll of the screw compressor of the embodiments of the present invention；
Fig. 6 is the mounting means schematic diagram of the oil return pipe of the screw compressor of the embodiments of the present invention.
Wherein:
100, screw compressor 110, exhaust end cover 111, discharge chamber
112, shoe cream room 113, Oil-gas Separation channel 120, oil distributing pipe
130, fixed scroll 131, drainback passage 131a, axial passage
131b, radial passage 131c, confined planes 140, oil return pipe
141, oil transportation hole 141a, axial pore 141b, radial spray pore
142, positioning surface 143, oil-inlet end 150, movable orbiting scroll component
160, low pressure chamber 170, bracket 180, filter element
181, cushion chamber 182, socket portion 190, sealing element
Specific embodiment
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing to this
The specific embodiment of utility model is described in detail.Many details are explained in the following description in order to abundant
Understand the utility model.But the utility model can be implemented with being much different from other way described herein, this field
Technical staff can do similar improvement without prejudice to the utility model connotation, therefore the utility model is not by following public affairs
The limitation for the specific embodiment opened.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein includes
Any and all combinations of one or more related listed items.
As shown in figs. 1,2 and 6, the screw compressor 100 of the embodiments of the present invention includes the row set gradually
Gas end cap 110, fixed scroll 130 and bracket 170.Low pressure chamber is collectively formed in the inner cavity of bracket 170 and the inner cavity of fixed scroll 130
160.Mountable movable orbiting scroll component 150 in low pressure chamber 160.Interconnected discharge chamber 111 and oil are formed in exhaust end cover 110
Gas split tunnel 113.Oil distributing pipe 120 is installed in Oil-gas Separation channel 113.High-pressure oil gas mixing in above-mentioned discharge chamber 111
Object can impact oil distributing pipe 120, and under centrifugal force and gravity, the lubricating oil in high-pressure oil gas mixture is separated.Point
The shoe cream room 112 of 111 lower section of discharge chamber can be flowed by separating out the lubricating oil come.The screw compressor of the embodiments of the present invention
100 fixed scroll 130 is equipped with the drainback passage 131 for shoe cream room 112 to be connected to low pressure chamber 160.Drainback passage 131 it is interior
Portion is equipped with oil return pipe 140, and oil return pipe 140 is equipped with for making the lubricating oil in shoe cream room 112 enter the oil transportation hole of low pressure chamber 160
141.Being equipped between oil return pipe 140 and the inner wall of drainback passage 131 prevents the high pressure gas in exhaust end cover 110 by drainback passage
131 enter the sealing element 190 of low pressure chamber 160.
In above-mentioned screw compressor 100, oil return pipe 140 is mounted in the inside of fixed scroll 130.In installation process, it can lead to
It crosses external force and oil return pipe 140 is directly pressed into drainback passage 131 together with sealing element 190 together.It can be seen that the utility model
The installation process of oil return pipe 140 in embodiment is efficient and convenient.Due to being equipped with sealing element 190, so that Oil-gas Separation channel 113
Interior high pressure gas will not enter low pressure chamber 160 by shoe cream room 112 and drainback passage 131.Oil return pipe 140 is together with sealing element
The sealing effect for the sealing structure that 190 modes installed together are saved process, are quickly and expediently installed, and formed is good.
In the present embodiment, the lubricating oil in shoe cream room 112 can be utilized the oil transportation hole 141 in oil return pipe 140 by oil return pipe 140
It is injected into low pressure chamber 160.Lubricating oil, which can be realized, in into low pressure chamber 160 moistens fixed scroll and movable orbiting scroll friction pair
It is sliding, and then compressor frictional dissipation is reduced, be conducive to promote compressor operating efficiency and functional reliability.Also, enter low pressure
Lubricating oil of this parts of lubricating oil of chamber 160 in shoe cream room 112, shoe cream room 112 comes from oil distributing pipe 120, so that
The amount of the lubricating oil in oil and gas mixture in exhaust end cover 110 can be reduced.Namely controllable lubricating oil enters with refrigerant
The internal circulating load of air-conditioning system pipeline is conducive to promote air-conditioning system overall performance.
In the present embodiment, the material of oil return pipe 140 can be copper alloy, aluminium alloy or other materials.Oil return pipe 140 it is defeated
Oilhole 141 can be capillary channel.The principle of above-mentioned capillary channel and the principle of capillary are identical.
In the present embodiment, drainback passage 131 includes along the axial passage 131a of fixed scroll 130 being axially arranged and along quiet
The radial passage 131b of whirlpool disk 130 being arranged radially.One end of axial passage 131a passes through radial passage 131b and low pressure chamber 160
Connection, the other end of axial passage 131a are connected to shoe cream room 112.Specifically, as shown in figure 5, axial passage 131a can be quiet
It is processed on the end face of whirlpool disk 130, radial passage 131b can be processed on the side wall of fixed scroll 130.Above-mentioned oil return is logical
Road 131 it is relatively simple for structure and easy to process.It is also convenient for for oil return pipe 140 being installed into above-mentioned drainback passage 131.
Specifically, oil return pipe 140 can be pressed into above-mentioned axial passage 131a when installing oil return pipe 140, so that
Radial passage 131b is located at one end of oil return pipe 140, and one end of radial passage 131b is connected to axial passage 131a, radial passage
The other end of 131b is towards low pressure chamber 160.Since the interference structure in the axial direction of fixed scroll 130 is less, so by oil return pipe 140
It is mounted in axial passage 131a and is comparatively easy.It is understood that oil return pipe 140 also may be mounted at radial passage
In 131b.
Be equipped in the present embodiment, in axial passage 131a for position of the oil return pipe 140 in axial passage 131a into
The fixed position limiting structure of row.For example, as shown in figure 4, axial passage 131a can be processed into a stepped hole.The annular of stepped hole
End face forms confined planes 131c.Correspondingly, settable positioning surface 142 on oil return pipe 140, passes through positioning surface 142 and confined planes
131c against realizing to the axially position of oil return pipe 140.
In the present embodiment, oil return pipe 140 is oil-inlet end close to one end of shoe cream room 112, and oil return pipe 140 is close to low pressure chamber
160 one end is oil outlet.Filter element 180 is provided at the oil-inlet end of oil return pipe 140.It can be prevented using filter element miscellaneous
Matter enters in the oil transportation hole 141 of oil return pipe 140, and then can prevent impurity from blocking oil return pipe 140.
Specifically, filter element 180 can be filter screen or the filter element of other forms.
In the present embodiment, as shown in figure 3, between one end of filter element 180 and the oil-inlet end 143 of the oil return pipe 140
With cushion chamber 181, the other end of the filter element 180 covers a part of pipe shaft of oil return pipe 140, the filter element
180 form integral structure by plastic packaging with oil return pipe 140.Specifically, a part of filter element 180 forms a socket portion
182, the oil-inlet end of oil return pipe 140 is located in the socket portion 182.The position of the end in socket portion 182 at least face oil-inlet end 143
It is set as netted filtering structure, remaining space forms above-mentioned cushion chamber after the oil-inlet end 143 of oil return pipe 140 is removed in the socket
181.On the one hand above-mentioned set-up mode makes filter element 180 and oil return pipe 140 that can be pressed into the drainback passage of fixed scroll 130 together
In 131, whole installation process is efficient and convenient.On the other hand, being provided with for cushion chamber 181 is conducive to increase by 180 entirety of filter element
Effective filtration area.
In the present embodiment, as shown in Figure 3 and Figure 6, above-mentioned sealing element 190 is sealing ring.The pipe shaft of oil return pipe 140 is corresponding
Filter element 180 on be provided with annular mounting groove, sealing ring is sheathed on mounting groove.The lateral wall and drainback passage of sealing ring
131 inner wall contact.Above-mentioned this setup makes sealing ring, filter element 180 and oil return pipe 140 that can form integral type knot
Structure.So as to sealing ring, filter element 180 and oil return pipe 140 are pressed into together in the drainback passage 131 of fixed scroll 130.Entirely
Installation process is efficient and convenient.And sealing ring obtains good location.
In the present embodiment, oil return pipe 140 is the capillary with multiple radial spray pore 141a.Specifically, such as Fig. 3 and
Shown in Fig. 6, oil transportation hole 141 may include along the axial pore 141a of oil return pipe 140 being axially arranged and along the diameter of oil return pipe 140
To the radial spray pore 141b of setting.One end of radial spray pore 141b is connected to axial direction pore 141a.Radial spray is thin
The other end of hole 141b is towards radial passage 131b.In this way, lubricating oil can be entered above-mentioned axial pore by shoe cream room 112
141a, and radial spray pore 141b is entered by axial pore 141a, it is finally injected into using radial spray pore 141b low
Press chamber 160.It should be noted that the quantity of radial spray pore 141b can be set according to actual needs, such as 1 can be set
A, 3 or 5 etc..The cross-sectional area of radial passage 131b in fixed scroll 130 can be thin according to the radial spray of oil return pipe 140
The quantity of hole 141b and aperture adjust so that the lubricating oil that sprays of the radial spray pore 141b of oil return pipe 140 more by
Radial passage 131b enters the principle that low pressure chamber 160 is adjustment.
In the present embodiment, the quantity of radial passage 131b is multiple, with oil return pipe 140 multiple radial spray pore 141b
Quantity it is corresponding.For example, the quantity of radial spray pore 141b is 5, then the quantity of radial passage 131b is 5, and each
Radial passage 131b and each radial spray pore 141b are corresponded.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of screw compressor, including exhaust end cover, fixed scroll and the bracket set gradually, the inner cavity of the bracket with it is quiet
The inner cavity of whirlpool disk is collectively formed low pressure chamber, is equipped in the exhaust end cover for by the oil distributing pipe of Oil-gas Separation and being used to store
The shoe cream room for the lubricating oil isolated in oil distributing pipe, which is characterized in that
The fixed scroll is equipped with the drainback passage for being connected to the shoe cream room with low pressure chamber,
The inside of the drainback passage is equipped with oil return pipe, and the oil return pipe is equipped with for making the lubricating oil in shoe cream room enter low pressure
The oil transportation hole of chamber,
Being equipped between the oil return pipe and the inner wall of drainback passage prevents the high pressure gas in exhaust end cover from being entered by drainback passage
The sealing element of the low pressure chamber.
2. screw compressor according to claim 1, which is characterized in that the drainback passage includes the axial direction along fixed scroll
The axial passage of setting and the radial passage being arranged radially along fixed scroll, one end of the axial passage passes through radial passage
It is connected to the low pressure chamber, the other end of the axial passage is connected to shoe cream room.
3. screw compressor according to claim 2, which is characterized in that the oil return pipe is mounted on the axial passage
Interior, one end of oil return pipe is arranged in the radial passage, and one end of the radial passage is connected to the axial passage, the diameter
To the other end in channel towards the low pressure chamber.
4. screw compressor according to claim 3, which is characterized in that be equipped in the axial passage for oil return pipe
The position limiting structure that position in axial passage is fixed.
5. screw compressor as claimed in any of claims 1 to 4, which is characterized in that the oil return pipe is close to institute
The one end for stating shoe cream room is oil-inlet end, and the oil return pipe is oil outlet close to one end of the low pressure chamber, and the oil return pipe enters
Filter element is provided at oily end.
6. screw compressor according to claim 5, which is characterized in that the filter element is filter screen, the filtering
There is cushion chamber, the other end of the filter screen is by a part of oil return pipe between one end of net and the oil-inlet end of the oil return pipe
Pipe shaft covering, the filter screen and oil return pipe form integral structure by plastic packaging.
7. screw compressor according to claim 6, which is characterized in that the sealing element is sealing ring, the oil return
Annular mounting groove is provided on the corresponding filter screen of the pipe shaft of pipe, the sealing ring is sheathed on the mounting groove, the sealing ring
Lateral wall contacted with the inner wall of drainback passage.
8. screw compressor as claimed in any of claims 1 to 4, which is characterized in that the oil transportation hole is capillary
Hole.
9. screw compressor according to claim 3, which is characterized in that the oil return pipe is with multiple radial sprays
The capillary of pore.
10. screw compressor according to claim 9, which is characterized in that the quantity of the radial passage be it is multiple, with institute
The quantity for stating multiple radial spray pores of oil return pipe is corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821351106.6U CN209012053U (en) | 2018-08-21 | 2018-08-21 | Screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821351106.6U CN209012053U (en) | 2018-08-21 | 2018-08-21 | Screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209012053U true CN209012053U (en) | 2019-06-21 |
Family
ID=66831374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821351106.6U Active CN209012053U (en) | 2018-08-21 | 2018-08-21 | Screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209012053U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228339A (en) * | 2020-10-27 | 2021-01-15 | 南京迪升动力科技有限公司 | Vortex pressure pump for medical breathing machine |
-
2018
- 2018-08-21 CN CN201821351106.6U patent/CN209012053U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228339A (en) * | 2020-10-27 | 2021-01-15 | 南京迪升动力科技有限公司 | Vortex pressure pump for medical breathing machine |
| CN112228339B (en) * | 2020-10-27 | 2024-02-23 | 南京迪升动力科技有限公司 | Vortex pressure pump for medical breathing machine |
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