CN114688772A - Liquid storage device and liquid storage method for reducing oil retaining amount and oil return time - Google Patents
Liquid storage device and liquid storage method for reducing oil retaining amount and oil return time Download PDFInfo
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- CN114688772A CN114688772A CN202210468408.6A CN202210468408A CN114688772A CN 114688772 A CN114688772 A CN 114688772A CN 202210468408 A CN202210468408 A CN 202210468408A CN 114688772 A CN114688772 A CN 114688772A
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- 239000007788 liquid Substances 0.000 title claims abstract description 76
- 238000003860 storage Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000003921 oil Substances 0.000 claims abstract description 117
- 239000010687 lubricating oil Substances 0.000 claims abstract description 52
- 238000003780 insertion Methods 0.000 claims abstract description 24
- 230000037431 insertion Effects 0.000 claims abstract description 24
- 230000014759 maintenance of location Effects 0.000 claims abstract description 16
- 230000007704 transition Effects 0.000 claims abstract description 4
- 239000003507 refrigerant Substances 0.000 claims description 38
- 230000009471 action Effects 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 11
- 230000005484 gravity Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000314 lubricant Substances 0.000 description 7
- 238000003466 welding Methods 0.000 description 7
- 238000004080 punching Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/28—Means for preventing liquid refrigerant entering into the compressor
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
A reservoir and a liquid storage method for reducing oil retention and oil return time are disclosed, wherein the reservoir comprises a closed reservoir shell, the top of the reservoir shell is provided with a hole and is provided with an inlet insertion tube communicated with the outside, a filter screen is arranged below the inlet insertion tube inside the reservoir shell, a guide pipe opposite to the inlet insertion tube is arranged below the filter screen, and a drainage plate is arranged below the guide pipe; the drainage plate is provided with a variable-section-area bulge part which is opposite to the flow guide pipe, the top of the variable-section-area bulge part is an arc surface, the diameter of the variable-section-area bulge part is gradually enlarged from the top to the bottom and is in smooth transition, and the bottom of the variable-section-area bulge part is provided with a plurality of circumferential through holes; still trompil and install the drainage plate sleeve pipe on the drainage plate, fix a plurality of export intubate through the drainage plate sleeve pipe respectively, export intubate and outside intercommunication, the oil gallery has been seted up in the inboard bottom of reservoir casing to the export intubate. The invention can reduce the amount of lubricating oil required to be filled in the compressor, reduce the oil return time and reduce the manufacturing cost.
Description
Technical Field
The invention belongs to the field of liquid accumulators, and particularly relates to a liquid accumulator and a liquid storage method for reducing oil retaining quantity and oil return time.
Background
In the existing small household room air conditioner, the compressor for increasing the pressure mostly uses a rotary compressor with high back pressure, and the suction side of the compressor is provided with an accumulator to prevent the compressor from being damaged due to liquid impact during the operation of the compressor to the maximum extent, but the lubricating oil discharged into the system from the compressor needs to be returned into the compressor again through the accumulator, and the oil amount of the lubricating oil staying in the accumulator and the time taken from the lubricating oil entering the accumulator to the lubricating oil flowing out of the accumulator have an influence on the efficient operation of the compressor and the whole refrigerating system.
Regarding the oil retention of the accumulator, the accumulator on the suction side is located on the low-temperature and low-pressure side of the system, so that the liquid mixture of the refrigerant and the miscible lubricating oil flowing through the accumulator has a lower viscosity and is more likely to reside on the wall surface of the flow channel than the liquid mixture on the high-temperature and high-pressure side; meanwhile, the sectional area of the flow channel in the liquid accumulator is much larger than that of the heat exchanger pipeline and the connecting pipeline, the flow speed is greatly reduced, the capacity of the refrigerant gas for driving oil to flow is lower, and the oil retaining amount in the liquid accumulator can be increased. The oil retaining amount of the liquid accumulator influences the oil amount required to be filled in the compressor and the oil return time on one hand, and influences the filling amount of the refrigerant mutually soluble with lubricating oil and the performance of the system on the other hand. The lubricating oil is filled mainly for facilitating the efficient operation of the pump body part of the compressor, so that the lubricating oil in the liquid storage device is unnecessary, and the oil retaining quantity in the liquid storage device is reduced as much as possible so as to reduce the total filling quantity of the lubricating oil of the compressor; the more the reservoir is filled, the longer the time from the time when the lubricating oil continuously enters the reservoir to the time when the lubricating oil flows out of the reservoir after the system is started. The more the accumulator is filled with oil, the more the refrigerant is dissolved in the lubricating oil, and this part of refrigerant is unnecessary and should be reduced as much as possible, especially in the system using the refrigerant R290, the charging amount is limited by the safety consideration, and the unnecessary refrigerant dissolved in the accumulator is more necessary to be reduced.
With respect to the issue of oil return time, the lubrication oil discharged from the high back pressure rotary compressor sump needs to be continually returned to the sump to be replenished in order to maintain a substantially constant compressor sump level and efficient operation of the compressor. The more the oil in the system including the reservoir is, the longer the oil return time is, and the longer the oil pool liquid level is not at the designed height, which is not favorable for the efficient operation of the compressor, so the shorter the oil return time is, the better the oil return time is.
In experimental research, the problem that the reservoir matched with the high-back-pressure rotary compressor used in the existing small-sized room air conditioner has more oil retaining amount and takes longer total oil return time is found, so that the problem needs to be improved.
Disclosure of Invention
The present invention is directed to the above-mentioned problems in the prior art, and an object of the present invention is to provide a liquid storage device and a liquid storage method for reducing the oil retention amount and reducing the oil return time, which can reduce the amount of the lubricant oil required to be filled into the compressor and reduce the oil return time, so as to reduce the manufacturing cost and keep the compressor and the refrigeration system operating efficiently.
In order to achieve the purpose, the invention has the following technical scheme:
a liquid storage device capable of reducing oil retaining amount and oil return time comprises a closed liquid storage device shell, wherein the top of the liquid storage device shell is provided with a hole and is provided with an inlet insertion pipe communicated with the outside; the drainage plate is provided with a variable-section-area bulge part which is opposite to the flow guide pipe, the top of the variable-section-area bulge part is an arc surface, the diameter of the variable-section-area bulge part is gradually enlarged from the top to the bottom and is in smooth transition, and the bottom of the variable-section-area bulge part is provided with a plurality of circumferential through holes; still trompil and install the drainage plate sleeve pipe on the drainage plate, fix a plurality of export intubate through the drainage plate sleeve pipe respectively, export intubate and outside intercommunication, the oil gallery has been seted up in the inboard bottom of reservoir casing to the export intubate.
As a preferable scheme of the reservoir of the present invention, the reservoir housing is cylindrical and includes an upper housing, a middle housing, and a lower housing, which are connected in sequence.
Furthermore, as a preferable scheme of the liquid storage device of the invention, an upper shell sleeve for fixing the inlet cannula is arranged on the upper shell, and a lower shell sleeve for fixing the outlet cannula is arranged on the lower shell; the upper shell sleeve extends outwards from the outer surface of the upper shell, and the lower shell sleeve extends outwards from the outer surface of the lower shell.
As a preferred scheme of the liquid storage device, the filter screen is fixed on a bracket, and the bracket is fixed with the inner wall of the shell of the liquid storage device; the honeycomb duct link-up connect in the bottom surface center of collecting pipe, the pipe diameter of collecting pipe is greater than the honeycomb duct, the collecting pipe is also fixed the support on.
Furthermore, as a preferable scheme of the reservoir of the invention, the filter screen forms a groove-shaped structure, the bottom surface of the filter screen is arranged in the collecting pipe, and the filter screen and the top of the collecting pipe are provided with flanges which are connected and fixed with the bracket through the flanges.
As a preferred scheme of the liquid storage device, a plurality of through holes of the drainage plate are formed in the periphery of the convex part with the variable cross-sectional area of the drainage plate.
Furthermore, as a preferable scheme of the reservoir provided by the invention, the drainage plate is fixed with the inner wall of the reservoir shell, and the edge of the drainage plate is provided with an opening to be connected with a drain pipe.
A liquid storage method of a liquid storage device for reducing oil retaining quantity and oil return time comprises the following steps:
in the starting and stopping stages of the air conditioner, refrigerant gas and refrigerant liquid two-phase fluid flow in from an inlet insertion pipe, the flow direction of the refrigerant gas is changed from the circumferential direction to the radial direction after the refrigerant gas impacts the variable cross-section protruding part and enters the large space at the lower part of the drainage plate, the refrigerant liquid is buffered through the variable cross-section protruding part, so that the flow direction of the refrigerant liquid is gradually changed from the axial direction to the radial direction, and then the refrigerant liquid flows into the space at the lower part of the liquid accumulator through a plurality of circumferential through holes under the action of gravity;
in the stable operation stage of the air conditioner, the refrigerant gas drives the lubricating oil to make circular motion, the lubricating oil is converted from axial flow to radial flow, the lubricating oil impacts the lug boss with the variable cross-sectional area under the action of inertia force and centrifugal force, the lubricating oil on the lug boss with the variable cross-sectional area directly flows into the lower space of the liquid reservoir through the circumferential through hole, then the lubricating oil is stored in the space below the height of the oil return hole, and oil return is started under the action of pressure difference until the height of the bottom oil level reaches the height of the oil return hole.
Compared with the prior art, the invention has the following beneficial effects:
compared with the prior mode that the flow direction of lubricating oil is changed into the radial direction and flows to the wall surface of the shell of the liquid storage device after flowing in from the air inlet insertion tube, the flow guide tube opposite to the inlet insertion tube is arranged below the filter screen, so that the contact area of the lubricating oil and the wall surface is reduced, and part of oil retaining amount and oil return time are reduced. The honeycomb duct has improved the speed of filtering back fluid, has reduced the oil mass that stays of honeycomb duct self on the one hand, and on the other hand also plays a role in reducing for the bellying of variable cross section and stays the oil mass and provides help. Be equipped with on the drainage plate with the honeycomb duct just right variable cross section bellying, the top of variable cross section bellying is the arc surface, and enlarge and smooth transition gradually by top to bottom diameter, a plurality of circumference through-holes have been seted up to the bottom of variable cross section bellying, make most lubricating oil directly flow in reservoir lower part space through variable cross section bellying and circumference trompil, avoid most lubricating oil along horizontal surface and the reservoir casing wall of radial flow direction drainage plate, the area of contact of lubricating oil with the wall has been reduced, thereby reduced partly oil mass and oil return time. In a word, the wall surface area contacted by the lubricating oil and the space capable of storing the oil are reduced through the integral action of the structure, so that the oil storage amount is reduced, the time consumed by oil storage is reduced, and the oil return time is shortened.
Furthermore, the drainage plate of the liquid reservoir is fixed with the inner wall of the liquid reservoir shell, the edge of the drainage plate is also provided with the hole to be connected with the liquid discharge pipe, and the circumferential hole of the cross-sectional area variable lug boss is not penetrated in the circumferential direction, so a small part of lubricating oil flows in the direction of leaving the circle center along the radial direction through the non-penetrated part and then flows into the lower space of the liquid reservoir from the through hole of the drainage plate.
Furthermore, a lower casing sleeve for fixing the outlet insertion pipe is arranged on the lower casing of the liquid storage device, the lower casing sleeve extends outwards from the outer surface of the lower casing, if the lower casing sleeve protrudes towards the inner side of the casing, the punching height of the oil return hole must be higher than the protruding height, and if the lower casing sleeve protrudes towards the outer side of the casing instead of protruding towards the inner side, the punching height of the oil return hole can be further reduced, so that the oil retaining amount in the space below the height of the oil return hole is reduced.
Drawings
FIG. 1 is an isometric cross-sectional view of a reservoir of the present invention with reduced oil retention and reduced oil return time;
FIG. 2 is an elevational cross-sectional view of the accumulator of the present invention with reduced oil retention and reduced oil return time;
FIG. 3 is a cross-sectional view of a cross-section A-A of the accumulator of FIG. 2 illustrating reduced oil retention and reduced oil return time;
in the drawings: 101-an inlet cannula; 201-upper shell; 202-an upper housing sleeve; 301-a filter screen; 401-a scaffold; 402-a collection tube; 403-a flow guide pipe; 501-outlet cannula; 502-oil return hole; 601-a middle housing; 701-a drainage plate sleeve; 702-a drainage plate through hole; 703-circumferential through holes; 704-variable cross-sectional area lobes; 705-drain; 801-lower housing; 802-lower housing sleeve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 1 and 2, an embodiment of the invention provides a reservoir for reducing oil retention and oil return time, which includes an inlet insertion tube 101, the inlet insertion tube 101 is fixed by welding with an upper casing sleeve 202, a filter screen 3 is fixed on a bracket 401 by welding, a flow guide plate is fixed on a middle casing 601 by welding, the middle casing 601 is connected with an upper casing 201 by welding, a large space above and below the flow guide plate is communicated with a circumferential opening 703 through a flow guide plate through hole 702, the upper part of the outlet insertion tube 501 is fixed by welding with a flow guide plate sleeve 701, the lower part of the outlet insertion tube 501 is fixed by welding with a lower casing sleeve 802, and the lower casing 801 is connected with the middle casing 601 by welding.
The flowing process of the fluid in the reservoir of the invention is as follows: two-phase fluid of refrigerant gas and refrigerant liquid flows into the liquid storage device through the inlet insertion tube 1 in the starting and stopping stages of the air conditioning system, after impurities are filtered by the filter screen 301, the liquid is guided by the collecting tube 402 with a large caliber, the guide tube 403 with a small caliber and the variable cross-section bulge 704 and flows to the middle and lower space of the liquid storage device under the action of gravity to be stored, and the gas is guided by the collecting tube 402, the guide tube 403 and the variable cross-section bulge 704 to enter the lower space of the liquid storage device and flows out of the liquid storage device through the outlet insertion tube 5010; in the stable operation stage of the air conditioning system, the refrigerant gas drives the lubricating oil flowing along the pipe wall to flow into the liquid storage device through the inlet insertion pipe 101, after impurities are filtered by the filter screen 301, the gas flows into the lower space of the liquid storage device after flowing through the collecting pipe 402 with the larger caliber, the flow guide pipe 403 with the smaller caliber and the variable cross-section protruding part 704, flows into the lower space of the liquid storage device through the outlet insertion pipe 501, the lubricating oil flows to the lower space of the liquid storage device through the collecting pipe 402, the flow guide pipe 403 and the variable cross-section protruding part 704 and is stored under the action of gravity, and the lubricating oil enters the outlet insertion pipe 501 through the oil return hole 502 driven by static pressure difference generated by different fluid speeds inside and outside the pipe, and then is driven by the refrigerant gas to flow into the compressor along the pipe wall.
In an alternative embodiment, the filter screen 301 forms a groove-shaped structure, the bottom surface of the filter screen 301 is placed inside the collecting pipe 402, the filter screen 301 and the top of the collecting pipe 402 are provided with flanges, the flanges are connected and fixed with the bracket 401, the filter screen 301 and the inlet cannula 101 have an axial overlap, which is beneficial for the upstream lubricant to flow into the filter screen 301 and the collecting pipe 402 immediately after flowing into the reservoir, so that the lubricant is prevented from contacting the wall surface above the plane of the bracket 401, and thus, a part of the standing oil is reduced.
After passing through the filter screen 301 and the collecting pipe 402, the lubricating oil is driven by the gas to flow into the guide pipe 403, and the diameter of the guide pipe 403 is smaller than that of the collecting pipe 402, so that the gas flow velocity is increased, the driven lubricating oil flow velocity is also increased, the oil retaining amount on the guide pipe 403 is also reduced, the length of the guide pipe 403 is shorter, and the oil retaining amount is smaller as a whole. The flow guide tube 403 increases the gas flow velocity and increases the flow velocity of the lubricating oil to be carried along, so that the cross-sectional area-variable protrusion 704 functions more effectively.
After the flow is guided through the flow guide pipe 403, the fluid rushes to the variable cross-sectional area convex part 704 under the action of inertia, and then the system is divided into a system start-stop stage and a stable operation stage. When the refrigerant gas and refrigerant liquid two-phase fluid in the system starting and stopping stages flows in, the flow rate of the fluid is high, the flow direction of the gas after impacting the variable cross-section convex part 704 is changed from the circumferential direction to the radial direction and enters a large space at the middle lower part of the liquid storage device, the liquid has high density and high flow rate, the impact force is high, the flow direction of the gas can be buffered by the variable cross-section convex part 704, the axial direction of the gas is gradually changed into the radial direction, and then the gas flows into the space at the lower part of the liquid storage device through the through hole 702 of the drainage plate and the circumferential opening 703 under the action of gravity; in the stable operation stage of the system, the refrigerant gas drives the lubricating oil flowing along the pipe wall of the flow guide pipe 403 to rush to the variable cross-section convex part 704, the gas performs circular motion and is converted from axial flow to radial flow, the lubricating oil driven by the gas also has a tendency of performing circumferential motion and impacts the variable cross-section convex part 704 under the action of inertia force and centrifugal force, the circumferential opening 703 is not through along the circumferential direction, as shown in fig. 3, but is divided into four symmetrical parts and occupies most of the circumference of a reference circle of the circumferential opening 703, so most of the lubricating oil on the variable cross-section convex part 704 can directly flow into the lower space of the liquid reservoir through the circumferential opening 703, and the oil retention amount of the flow section is also small due to small contact area. The oil is then stored in the space below the level of the oil return hole 502 until the oil level reaches the height of the oil return hole 502, and oil return can be started under the action of pressure difference.
As shown in fig. 3, since the circumferential opening 703 is not through in the circumferential direction, a small portion of the lubricant may flow in a direction away from the center of the circle in the radial direction through the non-through portion and then flow into the lower space of the reservoir from the flow guide plate through hole 702, but since the reservoir cannot be kept absolutely horizontal when installed, the small portion of the lubricant may flow into the bottom of the reservoir along the intermediate housing 601, which increases the contact area between the lubricant and the wall surface, and therefore the edge of the flow guide plate is further opened with a liquid discharge pipe 705, so that the lubricant flows into the bottom of the reservoir from below the liquid discharge pipe 705 without contacting the intermediate wall surface, thereby reducing a part of the oil retention amount.
The lower housing sleeve 802 extends outwardly from the outer surface of the lower housing 801. If the sleeve 802 protrudes toward the inner side of the housing, the punching height of the oil return hole 502 must be higher than the protrusion, and if the sleeve 802 protrudes toward the outer side of the housing instead of protruding toward the inner side, the hole height of the oil return hole 502 can be further reduced, thereby reducing the oil retention in the space below the oil return hole.
In summary, compared with the prior art, the reservoir of the present invention has the advantages that the inlet cannula 101, the filter screen 301 and the collecting pipe 402 are axially overlapped, and compared with a mode that the axial overlap is not generated and the flow direction of the lubricating oil flowing from the inlet cannula is changed into the radial direction and flows to the wall surface of the reservoir shell, the contact area of the lubricating oil and the wall surface is reduced, so that a part of the oil retention amount and the oil return time are reduced.
The flow guide pipe 403 increases the speed of the filtered fluid, so that the oil retention amount of the thin pipe is reduced, and the variable cross-section area bulge 704 plays a role in reducing the oil retention amount.
Most of lubricating oil directly flows into the lower space of the reservoir through the variable cross-section protrusions 704 and the circumferential openings 703, most of lubricating oil is prevented from flowing to the horizontal surface of the drainage plate and the wall surface of the middle shell 601 along the radial direction, the contact area between the lubricating oil and the wall surface of the reservoir shell is reduced, and therefore the oil retaining amount and the oil return time are reduced.
The drain pipe 705 is arranged to prevent a small part of lubricating oil from contacting the middle shell 601, so that the contact area of the lubricating oil and the wall surface is reduced, and the oil retaining amount and the oil return time are reduced.
The space for storing oil at the bottom of the reservoir and the oil retaining amount are reduced by the lower housing sleeve 802 and the oil return hole 502.
In a word, through the whole effect of above mode make the wall area of lubricating oil contact and the space that can stay oil to reduce the oil mass that stays, reduced the time that oil that stays consumed thereby reduced the oil return time.
Another embodiment of the present invention further provides a liquid storage method for a liquid storage device for reducing oil retention and oil return time, including the following steps:
in the starting and stopping stages of the air conditioner, two-phase fluid of refrigerant gas and refrigerant liquid flows in from the inlet insertion pipe 101, the flow direction of the refrigerant gas is changed from the circumferential direction to the radial direction after the refrigerant gas impacts the variable cross-section protruding part 704 and enters a large space at the lower part of the drainage plate, the refrigerant liquid is buffered by the variable cross-section protruding part 704, the flow direction of the refrigerant liquid is gradually changed from the axial direction to the radial direction, and then the refrigerant liquid flows into the space at the lower part of the liquid accumulator through the plurality of circumferential through holes 703 under the action of gravity;
in the stable operation stage of the air conditioner, the refrigerant gas drives the lubricating oil to make circular motion, the lubricating oil is converted from axial flow to radial flow, the lubricating oil impacts the variable cross-section protruding part 704 under the action of inertia force and centrifugal force, the lubricating oil on the variable cross-section protruding part 704 directly flows into the lower space of the liquid storage device through the circumferential through hole 703, then the lubricating oil is stored in the space below the height of the oil return hole 502, and oil return is started under the action of pressure difference until the height of the bottom oil surface reaches the height of the oil return hole 502.
The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and it should be understood by those skilled in the art that the technical solution can be modified and replaced by a plurality of simple modifications and replacements without departing from the spirit and principle of the present invention, and the modifications and replacements also fall into the protection scope covered by the claims.
Claims (8)
1. A liquid storage device capable of reducing oil retaining amount and oil return time is characterized by comprising a closed liquid storage device shell, wherein the top of the liquid storage device shell is provided with a hole and is provided with an inlet insertion pipe (101) communicated with the outside, a filter screen (301) is arranged below the inlet insertion pipe (101) inside the liquid storage device shell, a guide pipe (403) right opposite to the inlet insertion pipe (101) is arranged below the filter screen (301), and a guide plate is arranged below the guide pipe (403); the drainage plate is provided with a variable-cross-section-area bulge (704) opposite to the drainage pipe (403), the top of the variable-cross-section-area bulge (704) is an arc surface, the diameter of the variable-cross-section-area bulge is gradually enlarged from the top to the bottom and is in smooth transition, and the bottom of the variable-cross-section-area bulge (704) is provided with a plurality of circumferential through holes (703); still trompil and install drainage plate sleeve pipe (701) on the drainage plate, fix a plurality of export intubate (501) through drainage plate sleeve pipe (701) respectively, export intubate (501) and outside intercommunication, export intubate (501) have seted up oil gallery (502) in the inboard bottom of reservoir casing.
2. The accumulator for reducing the oil retention amount and the oil return time according to claim 1, wherein the accumulator housing is cylindrical and comprises an upper housing (201), a middle housing (601) and a lower housing (801) which are connected in sequence.
3. The reservoir for reducing the standing oil amount and the oil return time according to claim 2, wherein an upper shell sleeve (202) for fixing the inlet insertion pipe (101) is arranged on the upper shell (201), and a lower shell sleeve (802) for fixing the outlet insertion pipe (501) is arranged on the lower shell (801); the upper shell sleeve (202) extends outwards from the outer surface of the upper shell (201), and the lower shell sleeve (802) extends outwards from the outer surface of the lower shell (801).
4. The reservoir for reducing the oil retention amount and the oil return time according to claim 1, wherein the filter screen (301) is fixed on a bracket (401), and the bracket (401) is fixed with the inner wall of the reservoir shell;
the draft tube (403) is connected to the center of the bottom surface of the collecting tube (402) in a penetrating manner, the tube diameter of the collecting tube (402) is larger than that of the draft tube (403), and the collecting tube (402) is also fixed on the bracket (401).
5. The reservoir for reducing the standing oil amount and the oil return time according to claim 4 is characterized in that the filter screen (301) forms a groove-shaped structure, the bottom surface of the filter screen (301) is arranged inside the collecting pipe (402), and flanges are arranged at the top of the filter screen (301) and the collecting pipe (402) and are connected and fixed with the bracket (401) through the flanges.
6. The reservoir of claim 1, wherein the flow guide plate further comprises a plurality of flow guide plate through holes (702) around the variable cross-sectional area protrusion (704).
7. The reservoir with reduced standing oil amount and reduced oil return time as claimed in claim 6, wherein the drainage plate is fixed to the inner wall of the reservoir housing, and the edge of the drainage plate is further perforated to connect with a drain pipe (705).
8. A method of storing liquid in a reservoir with reduced standing oil and reduced oil return time according to any one of claims 1-7, comprising the steps of:
in the starting and stopping stages of the air conditioner, a refrigerant gas and refrigerant liquid two-phase fluid flows in from an inlet insertion pipe (101), the flow direction of the refrigerant gas is changed from the circumferential direction to the radial direction after the refrigerant gas impacts a variable cross-section protruding part (704) and enters a large space at the lower part of a flow guide plate, the refrigerant liquid is buffered through the variable cross-section protruding part (704), the flow direction of the refrigerant liquid is gradually changed from the axial direction to the radial direction, and then the refrigerant liquid flows into the space at the lower part of a liquid accumulator through a plurality of circumferential through holes (703) under the action of gravity;
in the stable operation stage of the air conditioner, the refrigerant gas drives lubricating oil to make circular motion, the lubricating oil is converted from axial flow to radial flow, the lubricating oil impacts the variable cross-section protruding part (704) under the action of inertia force and centrifugal force, the lubricating oil on the variable cross-section protruding part (704) directly flows into the lower space of the liquid storage device through the circumferential through hole (703), then the lubricating oil is stored in the space below the height of the oil return hole (502), and oil return is started under the action of pressure difference until the height of the bottom oil surface reaches the height of the oil return hole (502).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210468408.6A CN114688772B (en) | 2022-04-29 | 2022-04-29 | Liquid storage device and liquid storage method for reducing oil retaining amount and oil return time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210468408.6A CN114688772B (en) | 2022-04-29 | 2022-04-29 | Liquid storage device and liquid storage method for reducing oil retaining amount and oil return time |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114688772A true CN114688772A (en) | 2022-07-01 |
| CN114688772B CN114688772B (en) | 2022-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210468408.6A Expired - Fee Related CN114688772B (en) | 2022-04-29 | 2022-04-29 | Liquid storage device and liquid storage method for reducing oil retaining amount and oil return time |
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| CN (1) | CN114688772B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000329430A (en) * | 1999-05-20 | 2000-11-30 | Fujitsu General Ltd | Oil separator |
| KR20010029360A (en) * | 1999-09-30 | 2001-04-06 | 신영주 | Accumulator for air conditioner |
| CN104089441A (en) * | 2014-04-03 | 2014-10-08 | 芜湖汉峰科技有限公司 | Liquid reservoir |
| CN105115202A (en) * | 2015-09-02 | 2015-12-02 | 广东美芝制冷设备有限公司 | Liquid storing device and compressor having same |
| CN105937821A (en) * | 2016-06-17 | 2016-09-14 | 合肥卡诺汽车空调有限公司 | Air-liquid separator group for refrigerating system |
| CN107990606A (en) * | 2017-12-06 | 2018-05-04 | 山东阿尔普尔节能装备有限公司 | A kind of ultralow temperature Screw chiller separator |
| CN108826769A (en) * | 2018-08-15 | 2018-11-16 | 珠海凌达压缩机有限公司 | A kind of liquid storage device and air-conditioning system of variable volume |
| CN109579379A (en) * | 2017-09-28 | 2019-04-05 | 浙江三花智能控制股份有限公司 | Air regulator and its gas-liquid separator |
-
2022
- 2022-04-29 CN CN202210468408.6A patent/CN114688772B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000329430A (en) * | 1999-05-20 | 2000-11-30 | Fujitsu General Ltd | Oil separator |
| KR20010029360A (en) * | 1999-09-30 | 2001-04-06 | 신영주 | Accumulator for air conditioner |
| CN104089441A (en) * | 2014-04-03 | 2014-10-08 | 芜湖汉峰科技有限公司 | Liquid reservoir |
| CN105115202A (en) * | 2015-09-02 | 2015-12-02 | 广东美芝制冷设备有限公司 | Liquid storing device and compressor having same |
| CN105937821A (en) * | 2016-06-17 | 2016-09-14 | 合肥卡诺汽车空调有限公司 | Air-liquid separator group for refrigerating system |
| CN109579379A (en) * | 2017-09-28 | 2019-04-05 | 浙江三花智能控制股份有限公司 | Air regulator and its gas-liquid separator |
| CN107990606A (en) * | 2017-12-06 | 2018-05-04 | 山东阿尔普尔节能装备有限公司 | A kind of ultralow temperature Screw chiller separator |
| CN108826769A (en) * | 2018-08-15 | 2018-11-16 | 珠海凌达压缩机有限公司 | A kind of liquid storage device and air-conditioning system of variable volume |
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| Publication number | Publication date |
|---|---|
| CN114688772B (en) | 2022-12-23 |
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