CN212130792U - Scroll compressor with sealing member self-adjusting structure - Google Patents
Scroll compressor with sealing member self-adjusting structure Download PDFInfo
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- CN212130792U CN212130792U CN201922318930.2U CN201922318930U CN212130792U CN 212130792 U CN212130792 U CN 212130792U CN 201922318930 U CN201922318930 U CN 201922318930U CN 212130792 U CN212130792 U CN 212130792U
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Abstract
The utility model discloses a scroll compressor with sealing member self-interacting structure, including quiet vortex dish, move vortex dish, support, bent axle and sealing member, quiet vortex dish with it is in to move vortex dish fixed the setting with cooperateing on the support, it establishes to move the vortex dish cover on the bent axle, the support is equipped with the support annular, support annular bottom and high-pressure oil intercommunication, be equipped with in the support annular the sealing member, the passageway is seted up on sealing member upper portion, and the high pressure and the low pressure region of passageway intercommunication sealing member inner and outer lane. The utility model discloses do not rely on the spring to carry out axial fixity to the sealing member, the sealing force size can be along with operating mode self-adaptation, and sealed effect is better. Under the light load working condition, the sealing force is relatively small, so that the loss and the friction loss caused by excessive sealing force are reduced; under the heavy load working condition, the sealing force is increased, and the sealing between two different pressure cavities is ensured.
Description
Technical Field
The utility model relates to a scroll compressor with sealing member is from regulation structure.
Background
Scroll compressors are high performance positive displacement compressors and are becoming more and more widely used in the industry. The compression of the scroll generates an axial gas force that disengages the moving and stationary plates, which not only causes the axial clearance of the compression chambers to expand, but also generates significant frictional power dissipation. A common solution is to introduce a pressure balancing axial gas force at the back of the moving disc.
CN1963207A patent, a scroll compressor, proposes to separate a space on the back side of an orbiting scroll into a central space at which the pressure is substantially equal to the discharge pressure and an outer peripheral space at which the pressure is lower than the central space; similarly, patent 102678546B-a scroll compressor of the type that separates the back face of an orbiting scroll into a high pressure chamber in the central portion and a back pressure chamber formed in the peripheral portion is proposed.
In the high-pressure cavity vortex compressor structure, in order to balance the compressive axial gas force, the pressure at the back of the movable disc is usually selected from a combination of various pressures. One common pressure combination is shown in fig. 1, and consists of a high pressure at the inner circle (discharge pressure) and a low pressure at the outer circle (intermediate or suction pressure), which requires a seal assembly separation between the two pressure chambers.
The existing scroll compressor sealing structure is as follows: the bracket is provided with a ring groove, the wave spring and the sealing element are sequentially arranged in the ring groove, the upper end surface of the sealing element is contacted with the back surface of the movable disc, and the wave spring is closer to the bottom of the ring groove and provides axial sealing force for the sealing element; the sealing element is provided with an overflowing notch, so that part of lubricating oil in the high-pressure oil pool enters the pump body compression cavity to lubricate the scroll teeth and reduce friction.
The existing sealing mode has the defects that the sealing force of the sealing element is provided by a wave spring, and the size of the sealing force cannot be changed along with the working condition after the model is selected, so that the sealing force is a fixed value. Under different working conditions, the pressure difference between the inner side and the outer side of the sealing element is different, so that the required sealing force is also inconsistent.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defect that prior art exists, the utility model provides a scroll compressor with sealing member self-interacting structure, this scroll compressor sealing force size can be along with operating mode self-adaptation, and sealed effect is better.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a scroll compressor with sealing member self-interacting structure, includes quiet vortex dish, moves vortex dish, support, bent axle and sealing member, quiet vortex dish with it is fixed to move vortex dish cooperatedly sets up on the support, it establishes to move the vortex dish cover on the bent axle, the support is equipped with the support annular, support annular groove bottom and high-pressure oil intercommunication, be equipped with in the support annular groove the sealing member, the passageway is seted up on sealing member upper portion, the passageway intercommunication the high pressure and the low pressure region of sealing member inner and outer lane.
The scroll compressor with the self-adjusting structure of the sealing element is characterized in that the passage of the sealing element is a small hole passage or a flow groove.
The scroll compressor with the sealing element self-adjusting structure is characterized in that the crankshaft is provided with a crankshaft oil supply channel, and the crankshaft oil supply channel is communicated with the bottom of the frame ring groove.
In the above scroll compressor with the self-adjusting structure of the sealing element, the bracket is provided with the bracket high-pressure oil channel, the bracket high-pressure oil channel is communicated with the bottom of the bracket annular groove and the inlet of the bracket oil pool, and liquid oil at the exhaust pressure is introduced into the bottom of the sealing element;
or, an oil supply pipe is arranged and is communicated with the oil pool at the bottom of the bracket annular groove and the bottom of the compressor, and liquid oil at the exhaust pressure is introduced into the bottom of the sealing element.
In the scroll compressor with the seal self-adjusting structure, the bracket oil sump or the oil sump at the bottom of the compressor is communicated with the crankshaft oil supply channel.
In the scroll compressor with the seal self-adjusting structure, the sum of the sectional areas of the passages of the seal is far smaller than the minimum sectional area of the high-pressure oil passage of the bracket.
In the scroll compressor with the self-adjusting structure of the sealing element, the number of the small hole passages is not less than 10, the number of the circulation grooves is not less than 10, the small hole passages and the circulation grooves are uniformly distributed along the radial direction of the sealing element, the sum of the cross sections of the small hole passages accounts for 10% -20% of the whole circumferential angle, and the height of the cross section does not exceed 1/5 of the thickness of the sealing element.
The scroll compressor with the self-adjusting structure of the sealing element is of an annular structure.
The scroll compressor with the self-adjusting structure of the sealing element slides along the axial direction.
In the scroll compressor with the self-adjusting structure of the sealing element, the material of the sealing element is a non-metal material.
The utility model discloses beneficial effect: the utility model has the advantages that the sealing structure does not need a spring and has high reliability; and the sealing force of the sealing element is adaptive along with the working condition, the sealing force is always matched with the working condition, and the surplus power consumption is reduced while the sealing reliability is maintained.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a graph of back pressure distribution for an orbiting scroll;
FIG. 2 is a cross-sectional view of a scroll compressor having a seal self-adjustment feature according to the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a view showing a small hole passage formed in the sealing member of the present invention;
FIG. 5 is a view showing a circulation groove formed in the sealing member of the present invention;
wherein, 1-fixed scroll; 2-moving the scroll plate; 3-a scaffold; 301-a stent ring groove; 302-bracket high pressure oil channel; 303-rack oil sump inlet; 4-a crankshaft; 401-crankshaft oil supply channel; 6-a seal; 602-a small pore channel; 603-flow through tank.
Detailed Description
In the description of the present invention, it is to be understood that the terms "length", "width", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", may explicitly or implicitly include one or more of that feature.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection, or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
The utility model provides a scroll compressor with sealing member self-interacting structure, as shown in fig. 2 to 5, including quiet vortex dish 1, move vortex dish 2, support 3, bent axle 4 and sealing member 6, quiet vortex dish 1 with move vortex dish 2 fixed the setting on support 3 with coordinating, move 2 covers of vortex dish and establish on bent axle 4, bent axle 4 drives and moves 2 synchronous rotations of vortex dish, support 3 is equipped with support annular 301, bent axle 4 is equipped with bent axle fuel feeding channel 401, bent axle fuel feeding channel 401 and support annular 301 bottom intercommunication, make support annular 301 bottom and high pressure oil intercommunication, be equipped with sealing member 6 in the support annular 301.
The sealing element 6 is made of non-metal material, and has the characteristics of wear resistance and slight deformation compared with metal materials such as the bracket 3. The sealing element 6 is of a circular ring structure, the upper part of the sealing element 6 is provided with at least 15 channels with tiny flow area, the sum of the cross sections of the small channels accounts for 10% -50% of the whole circumferential angle, the height of the cross section does not exceed 10% -20% of the thickness of the sealing element, preferably, the flow area of the channels accounts for 5% of the total area of the inner ring of the sealing element, the channels are communicated with high-pressure and low-pressure areas of the inner ring and the outer ring of the sealing element 6, and the pressure difference of the two sides of the sealing element 6 is determined by the working; the change of the channel section can influence the flow of the passing working medium, the working medium with the undersized section passes through the channel due to the factors of overlarge resistance, incapability of overcoming viscosity and the like, but the overlarge section can cause the sealing failure. Therefore, the micro channel can seal the static scroll 1 and the movable scroll 2 while enabling the working medium to pass through.
The sealing member 6 is located in the carrier ring groove 301 and is slidable only in the axial direction. Because the upper surface of the sealing member 6 is a flow passage with a pressure reduction effect, the pressure of the upper surface of the sealing member 6 is lower than that of the lubricating oil at the bottom. Under the action of the pressure difference, an axial sealing force is generated, so that the sealing member 6 is tightly attached to the back surface of the movable scroll 2. The sealing force can be self-adaptive along with the working condition, and particularly, under the condition that the suction pressure is not changed, the size of the sealing force is positively correlated with the exhaust pressure.
Example 1: a plurality of small-hole channels 602 are formed at positions close to the upper end face of the sealing element 6 and are communicated with the inner side and the outer side of the sealing element 6, formed small channels have a pressure reduction effect, and oil-gas mixed working media with inner circles and high pressure can enter a relatively low-pressure space of an outer ring through the small channels, so that a compression cavity is lubricated.
Preferably, the number of the small channels of the small-hole channel 602 is not less than 10, the sum of the cross sections of the small-hole channels accounts for 10% -20% of the whole circumferential angle, the height of the cross section does not exceed 10% -20% of the thickness of the sealing element,
example 2: a plurality of circulation grooves 603 are formed at positions close to the upper end face of the sealing element 6, the inner side and the outer side of the sealing element 6 are communicated, a formed small channel has a pressure reduction effect, and an oil-gas mixed working medium with an inner circle and high pressure can enter a relatively low-pressure space of an outer ring through the small channel, so that a compression cavity is lubricated.
Preferably, the number of the small channels of the circulation groove 603 is not less than 10, the sum of the cross sections of the small channels accounts for 10% -20% of the whole circumferential angle, the height of the cross section does not exceed 10% -20% of the thickness of the sealing element,
in the embodiment 1 and the embodiment 2, the bracket high-pressure oil passage 302 is arranged on the bracket 3, the bottom of the bracket ring groove 301 is communicated with the bracket oil pool inlet 303 (high-pressure oil inlet), and liquid oil at the exhaust pressure is introduced into the bottom of the sealing member 6. The resistance of the support high-pressure oil channel 302 leading to the bottom of the support ring groove 301 is as small as possible, so that the pressure at the bottom of the sealing element 6 is basically consistent with the exhaust pressure during work.
In example 1 and example 2, the bottom of the carrier ring groove 301 communicates with high pressure oil, which is not limited to oil from the carrier oil sump. An alternative embodiment is: the bottom of the support ring groove 301 is connected with an oil pool at the bottom of the compressor through an oil supply pipe, and high-pressure oil is communicated with the bottom of the support ring groove 301 through the oil supply pipe to provide sealing pressure.
The oil sump of the bracket is communicated with the oil sump at the bottom of the compressor by a crankshaft oil supply channel 401, and one common way is to provide conveying power by an oil pump.
In the above structure, the sum of the flow cross-sectional areas of the small hole passage 602 or the flow groove 603 in the upper part of the seal member 6 is much smaller than the minimum cross-sectional area of the high-pressure oil passage 302 of the bracket. The characteristic can firstly ensure the floating work of the sealing element 6, secondly allow a small amount of high-pressure lubricating oil to enter a relatively low-pressure space of the outer ring through the upper surface, and can not cause the severe fluctuation of the pressure of each cavity while ensuring the lubricating requirement.
The utility model discloses do not rely on the spring to carry out axial fixity to sealing member 6, the sealing force size can be along with operating mode self-adaptation, and sealed effect is better. Under the light load working condition, the sealing force is relatively small, so that the loss and the friction loss caused by excessive sealing force are reduced; under the heavy load working condition, the sealing force is increased, and the sealing between two different pressure cavities is ensured.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes and modifications can be made, which are within the scope of the present invention, and therefore, the scope of the present invention should be determined by the appended claims.
Claims (10)
1. A scroll compressor having a seal self-adjustment feature, comprising: including static vortex dish, move vortex dish, support, bent axle and sealing member, static vortex dish with move vortex dish cooperatedly fixed the setting and be in on the support, it establishes to move the vortex dish cover on the bent axle, the support is equipped with the support annular, support ring groove bottom and high-pressure oil intercommunication, be equipped with in the support annular the sealing member, the passageway is seted up on sealing member upper portion, the passageway intercommunication the high pressure and the low pressure region of outer lane in the sealing member.
2. A scroll compressor having a seal self-adjustment arrangement in accordance with claim 1, wherein: the passage of the sealing element is a small hole passage or a flow groove.
3. A scroll compressor having a seal self-adjustment arrangement in accordance with claim 1, wherein: the crankshaft is provided with a crankshaft oil supply channel which is communicated with the bottom of the frame ring groove.
4. A scroll compressor having a seal self-adjustment arrangement in accordance with claim 3, wherein: the support is provided with a support high-pressure oil channel which is communicated with the bottom of the support ring groove and the inlet of the support oil pool and introduces liquid oil at the exhaust pressure into the bottom of the sealing element;
or, an oil supply pipe is arranged and is communicated with the oil pool at the bottom of the bracket annular groove and the bottom of the compressor, and liquid oil at the exhaust pressure is introduced into the bottom of the sealing element.
5. A scroll compressor having a seal self-adjustment feature in accordance with claim 4, wherein: the support oil sump or the oil sump at the bottom of the compressor is communicated with the crankshaft oil supply channel.
6. A scroll compressor having a seal self-adjustment arrangement in accordance with claim 5, wherein: the sum of the sectional areas of the passages of the sealing element is far smaller than the minimum sectional area of the high-pressure oil passage of the bracket.
7. A scroll compressor having a seal self-adjustment arrangement in accordance with claim 2, wherein: the number of the small hole passages is not less than 10, the number of the circulation grooves is not less than 10, the small hole passages and the circulation grooves are uniformly distributed along the radial direction of the sealing element, the sum of the cross sections of the small hole passages accounts for 10% -20% of the whole circumferential angle, and the height of the cross section does not exceed 1/5 of the thickness of the sealing element.
8. A scroll compressor having a seal self-adjustment arrangement in accordance with claim 1, wherein: the sealing element is of a circular ring structure.
9. A scroll compressor having a seal self-adjustment arrangement in accordance with claim 1, wherein: the seal slides in an axial direction.
10. A scroll compressor having a seal self-adjusting construction according to any one of claims 1 to 9, wherein: the sealing element is made of non-metal materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922318930.2U CN212130792U (en) | 2019-12-20 | 2019-12-20 | Scroll compressor with sealing member self-adjusting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922318930.2U CN212130792U (en) | 2019-12-20 | 2019-12-20 | Scroll compressor with sealing member self-adjusting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212130792U true CN212130792U (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922318930.2U Active CN212130792U (en) | 2019-12-20 | 2019-12-20 | Scroll compressor with sealing member self-adjusting structure |
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| CN (1) | CN212130792U (en) |
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