CN108362049A - Oil separator and air conditioning unit - Google Patents
Oil separator and air conditioning unit Download PDFInfo
- Publication number
- CN108362049A CN108362049A CN201810126591.5A CN201810126591A CN108362049A CN 108362049 A CN108362049 A CN 108362049A CN 201810126591 A CN201810126591 A CN 201810126591A CN 108362049 A CN108362049 A CN 108362049A
- Authority
- CN
- China
- Prior art keywords
- oil
- eliminator
- shell
- air inlet
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004378 air conditioning Methods 0.000 title abstract description 4
- 239000012530 fluid Substances 0.000 claims abstract description 36
- 239000011521 glass Substances 0.000 claims description 7
- 230000008676 import Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 3
- 238000010025 steaming Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 abstract description 11
- 239000007788 liquid Substances 0.000 abstract description 8
- 239000000203 mixture Substances 0.000 description 9
- 239000003507 refrigerant Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/02—Centrifugal separation of gas, liquid or oil
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses an oil separator and an air conditioning unit. The oil separator includes: a housing having an oil inlet and an oil outlet, the bottom of the housing comprising an oil sump; the oil separation structure is arranged in the shell; and an oil return structure, the oil return structure comprising: the ejector comprises a working fluid inlet, a secondary fluid inlet and an ejector outlet; the oil return and inlet pipe is respectively communicated with the oil pool and the working fluid inlet; an oil return air inlet pipe communicated with the secondary fluid inlet; and the oil return outlet pipe is communicated with the ejector outlet. The air conditioning unit comprises the oil separator. According to the invention, oil return is carried out by utilizing the pressure of the oil liquid separated by the oil separator and the pressure difference of the pipeline, so that the arrangement of an oil return pump of a unit where the oil separator is positioned is reduced, and the cost is reduced.
Description
Technical field
The present invention relates to field of air conditioning, more particularly to a kind of oil eliminator and air-conditioner set.
Background technology
In air-conditioner set, oil eliminator is used to detach the oil droplet that refrigerant and refrigerant carry, to avoid being pressed from both sides in gas coolant
The oil droplet of band enters heat exchanger and heat exchange efficiency is caused to reduce.
A kind of oil eliminator known for inventor in the related technology, as depicted in figs. 1 and 2, oil eliminator includes shell
Body 1, air inlet pipe 3, exhaust pipe 4, liquid collecting packet 5, interior cartridge module 6, filter screen 7 and vertical baffle 8.Interior cartridge module 6 is relative to shell 1
Rotatably, and with shell 1 flowing lumen 61 being connected to air inlet pipe 3 is formed.Interior cartridge module 6 further includes drainage baffle 62, drainage gear
Setting is conducive to the protrusion 63 of oil separation on plate 62.
When aforementioned oil eliminator work, gas mixture enters from air inlet pipe 3 in oil eliminator, first passes through interior cartridge module 6
It is centrifuged, enables larger oil droplet and gas precipitation and separation to housing bottom, small oil droplet is carried out by filter screen 7 again later
Collection, after filter screen 7, when droplets contact to vertical baffle 8, oil droplet is precipitated by resistance.The oil droplet of 1 bottom of shell
It is collected into liquid collecting packet 5.Filtered clean gas is entered by exhaust pipe 4 in heat-exchange system.
In the implementation of the present invention, inventor has found, the above prior art has following shortcoming:
After oil is detached with refrigerant, it is largely collected to the liquid collecting packet 5 of oil bottom, and increase by the oil return line of unit
If oil pump carries out oil return, oil return oil pump need to be arranged in unit, and cost is higher.
The runner of the flowing lumen 61 of oil eliminator is more narrow, and oil, which is separated, collects in housing bottom, is easy newly to be arrived
The gas come carries away, and the oil separated returns in gas again, and separative efficiency is caused to reduce.
Invention content
The purpose of the present invention is to provide a kind of oil eliminator and air-conditioner sets, it is intended to unit where reducing oil eliminator
The setting of oil return oil pump, reduces cost.
First aspect present invention provides a kind of oil eliminator, including:Shell has oil air inlet and oil gas outlet,
The bottom of the shell includes oil sump;Oil separating structure is set in the shell;And oil-returning structure, oil-returning structure include:Draw
Emitter, including Working-fluid intaking, a secondary fluid entrance and injector outlet;Oil return oil inlet pipe, with the oil sump and the work
It is respectively communicated with as fluid inlet;Oil return air inlet pipe is connected to a secondary fluid entrance;With oil return flowline, with the injection
Device outlet.
Further, the shell includes oil cylinder sum aggregate oil sealing head, and the oil cylinder has lower part opening, described
Oil-collecting end socket is connected to the bottom of the oil cylinder and seals the lower part opening, and oil-collecting end socket inner space forms institute
State oil sump;And/or the shell includes oil cylinder and oil head cover, the oil cylinder has open topped, the oil
Head cover is connected to the top of the oil cylinder and seals the open topped, and the oil gas outlet is set to the oil head cover
On.
Further, the shell includes oil cylinder, and the oil air inlet is set on the oil cylinder and institute
The centreline space of the center line and the oil cylinder of stating oil air inlet is at a certain distance.
Further, the oil separating structure is set to the top of the oil sump and the oil-returning structure.
Further, the oil separating structure includes filter screen, and the filter screen is located at the oil air inlet and described
Between oil sump.
Further, the oil eliminator includes the liquid-sighting glass being set on the shell.
Further, the revolving body that line is vertically arranged centered on the shell.
Further, the oil-returning structure is set in the shell, the import and the oil return of the oil return air inlet pipe
The outlet of flowline is connected to the external of the shell.
Second aspect of the present invention provides a kind of air-conditioner set, including compressor and oil eliminator, and the oil eliminator is this
Oil eliminator described in any one of invention first aspect, the oil gas outlet of the import of the compressor and the oil eliminator
Connection, the outlet of the compressor is connected to the oil air inlet of the oil eliminator.
Further, the air-conditioner set further includes evaporator, and the evaporator includes going out for drawing the fluid of fluid
Mouthful, the oil return air inlet pipe and the fluid outlet.
Based on oil eliminator provided by the invention and air-conditioner set, oil eliminator includes oil-returning structure, oil-returning structure setting
Injector, the pressure of fluid and pipeline pressure difference so as to be isolated using oil eliminator are carried out oil return, reduce oil eliminator
The setting of the oil return oil pump of place unit, reduces cost.In addition, the setting of the oil return line of unit is more simple where oil eliminator
It is single, so as to improve the operation stability of unit.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, this hair
Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings:
Fig. 1 is the perspective structure schematic diagram of the oil eliminator of the relevant technologies.
Fig. 2 is the schematic cross-sectional view of oil eliminator shown in FIG. 1.
Fig. 3 is the main structure diagram of the oil eliminator of the embodiment of the present invention.
Fig. 4 is the left view structural representation of oil eliminator shown in Fig. 3.
Fig. 5 is the right side structural representation of oil eliminator shown in Fig. 3.
Fig. 6 is the overlooking structure diagram of oil eliminator shown in Fig. 3.
Fig. 7 is the B-B direction schematic cross-sectional view of Fig. 3.
In Fig. 3 to Fig. 7, each reference numeral respectively represents:
2, oil eliminator;201, oil cylinder;202, oil head cover;203, oil-collecting end socket;204, oil air inlet;205、
Oil gas outlet;206, oil return air inlet pipe;207, oil return flowline;208, lifting lug;209, liquid mouth is regarded;210, liquid-sighting glass;211、
Filter screen;212, injector;213, oil return oil inlet pipe.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment is illustrative, is never used as to the present invention and its application or makes
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, shall fall within the protection scope of the present invention.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
It is not limited the scope of the invention up to formula and numerical value.Simultaneously, it should be appreciated that for ease of description, attached each portion shown in the drawings
The size divided not is to be drawn according to actual proportionate relationship.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as authorizing explanation
A part for book.In shown here and discussion all examples, any occurrence should be construed as merely illustrative, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that:Similar label
Similar terms are indicated in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attached
It need not be further discussed in figure.
In the description of the present invention, it is to be understood that, the noun of locality such as " front, rear, top, and bottom, left and right ", " it is laterally, vertical,
Vertically, the orientation or positional relationship indicated by level " and " top, bottom " etc. is normally based on orientation or position shown in the drawings and closes
System, is merely for convenience of description of the present invention and simplification of the description, in the absence of explanation to the contrary, these nouns of locality do not indicate that
Signified device or element must have a particular orientation or with specific azimuth configuration and operations with hint, therefore cannot manage
Solution is limiting the scope of the invention;The noun of locality " inside and outside " refers to inside and outside the profile relative to each component itself.
Referring to Fig. 3 to Fig. 7.The embodiment of the present invention provides a kind of oil eliminator 2.Oil eliminator 2 includes shell, oil separation knot
Structure and oil-returning structure.Shell has oil air inlet 204 and oil gas outlet 205, and the bottom of shell includes oil sump.Oil separation knot
Structure is set to shell.Oil-returning structure includes injector 212, oil return oil inlet pipe 213, oil return air inlet pipe 206 and oil return flowline
207.Injector 212 includes Working-fluid intaking, a secondary fluid entrance and injector outlet.Oil return oil inlet pipe 213 and oil sump and
Working-fluid intaking is respectively communicated with.Oil return air inlet pipe 206 is connected to a secondary fluid entrance.Oil return flowline 207 goes out with injector
Mouth connection, and extend to hull outside.
In the oil eliminator 2 of the present embodiment, injector is arranged in oil-returning structure, the fluid that oil eliminator can be utilized to isolate
Pressure and pipeline pressure difference carry out oil return, reduce oil return oil pump setting, reduce cost.In addition, 2 place unit of oil eliminator
The setting of oil return line is relatively simple, so as to improve the operation stability of unit.
In some embodiments, oil-returning structure is set to enclosure interior, the import of oil return air inlet pipe 206 and oil return flowline
207 outlet is connected to hull outside.
Oil-returning structure and its injector 212 are placed in the enclosure interior of oil eliminator 2, make full use of the inside of oil eliminator 2
The space hold of oil eliminator is reduced in space.
In some embodiments, shell includes 201 sum aggregate oil sealing head 203 of oil cylinder, and oil cylinder 201 is spacious with lower part
Mouthful, oil-collecting end socket 203 is connected to 201 bottom of oil cylinder and sealed lower portion is open, and oil sump is located in oil-collecting end socket 203.
Oil eliminator 2 can make the oil separated shell of the storage to oil eliminator 2 in time using oil-collecting end socket 203
In the oil-collecting end socket 203 of bottom, the fluid separated is effectively prevent to reenter cold media gas, oil eliminator 2 can be improved
Oil-dividing efficiency.
In some embodiments, shell includes oil cylinder 201 and oil head cover 202, and oil cylinder 201 is spacious with top
Mouthful, oil head cover 202 is connected to 201 top of oil cylinder and seals open topped.Oil gas outlet 205 is set to oil head cover
On 202.Structure processing is simple and convenient, coordinates with oil separating structure, and the gas that oil gas outlet 205 exports is more pure.
In some embodiments, shell includes oil cylinder 201, oil air inlet 204 be set on oil cylinder 201 and
The center line of oil air inlet 204 has certain distance with the center line of oil cylinder 201.The setting can make from oil air inlet
The gas mixtures that mouth 204 enters in shell impinge upon on the inner wall of oil cylinder 201, and gas mixture is made to generate eddy flow,
To realize the Oil-gas Separation of relatively large oil droplet by centrifuging and hitting separation.
In the present embodiment, line is vertically arranged centered on the shell revolving body.
In some embodiments, oil separating structure is set to the top of oil sump and oil-returning structure.As shown in fig. 6, oil separation
Structure may include filter screen 211.Gas mixture realizes the oil of relatively large oil droplet by centrifuging and hitting separation
Qi leel is from rear, and gas mixture filters out the droplet fluid in gas using filter screen 11, to realize gas mixture
Further separation, conducive to purer gas is obtained.
In some embodiments, oil eliminator 2 further includes the liquid-sighting glass 210 being set on shell.As shown in Fig. 3 to Fig. 7,
It is provided on the oil cylinder 201 of oil eliminator 2 regarding liquid mouth 209, liquid-sighting glass 210 is installed in liquid mouth 209.Liquid-sighting glass is used
In the oil level of observation 2 inner fluid of oil eliminator.Liquid-sighting glass 210 is arranged can observe oil level in shell at any time.
The present embodiment also provides a kind of air-conditioner set, including compressor and oil eliminator above-mentioned 2.The import of compressor with
The oil gas outlet 205 of oil eliminator 2 is connected to, and the outlet of compressor is connected to the oil air inlet 204 of oil eliminator 2.
In some embodiments, air-conditioner set includes evaporator, and evaporator has the oil for drawing evaporator inner fluid
Liquid exports.The fluid outlet of oil return air inlet pipe 206 and evaporator.
The air-conditioner set of the present embodiment has the advantages that identical as aforementioned oil eliminator 2.
Illustrate the oil eliminator of the present embodiment and the operation principle of air-conditioner set below in conjunction with Fig. 3 to Fig. 7.
The gas mixture of compressor discharge oil and refrigerant, gas mixture is chamfer by oil gas air inlet 204 enters oil
Separator 2, gas mixture are detached for the first time by mechanical collision and centrifugal force.The fluid isolated is collected to oil eliminator 2
In the oil sump of housing bottom (being in oil-collecting end socket 203 in Fig. 3 to embodiment shown in Fig. 7, in oil sump).The refrigerant separated
By the separation again of filter screen 211, fine oil droplets are isolated, isolate the refrigerant air-flow after fluid from oil eliminator 2
It leaves the oil gas outlet 205 in portion.
Due to there is fraction oil that can enter condenser with refrigerant air-flow, the part in this final fraction oil can be in evaporator
In collect to form fluid.The fluid outlet of oil return air inlet pipe 206 and evaporator.Oil return oil inlet pipe 213 is inserted into oil-collecting end socket
203 oil sump bottom can directly will accumulate in by the high pressure oil in oil-collecting end socket 203 as power by injector 212
Fluid in evaporator takes back compressor by oil return flowline 207.
From the above description, it can be seen that above example of the present invention at least one has the following technical effect that:Pass through pipeline fitting
Pressure difference carries out oil return;Optimize oil return circuit;The pipeline fitting of reduction system reduces oil return oil pump;Save unit cost;Increase oil
Reliability from unit where device;Oil-collecting end socket makes the oil separated storage in time to the shell bottom of oil eliminator as oil sump
Portion prevents the fluid separated from turning again in refrigerant fluid, improves the oil-dividing efficiency of oily separator.
Finally it should be noted that:The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof;To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, those of ordinary skills in the art should understand that:Still
It can modify to the specific implementation mode of the present invention or equivalent replacement is carried out to some technical characteristics;Without departing from this hair
The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.
Claims (10)
1. a kind of oil eliminator (2), which is characterized in that including:
Shell has oil air inlet (204) and oil gas outlet (205), and the bottom of the shell includes oil sump;
Oil separating structure is set in the shell;With
Oil-returning structure, including:
Injector (212), including Working-fluid intaking, a secondary fluid entrance and injector outlet;
Oil return oil inlet pipe (213), is respectively communicated with the oil sump and the Working-fluid intaking;
Oil return air inlet pipe (206) is connected to a secondary fluid entrance;With
Oil return flowline (207), with the injector outlet.
2. oil eliminator (2) according to claim 1, which is characterized in that
The shell includes oil cylinder (201) sum aggregate oil sealing head (203), and the oil cylinder (201) has lower part opening, institute
Oil-collecting end socket (203) is stated to be connected to the bottom of the oil cylinder (201) and seal the lower part opening, the oil-collecting end socket
(203) inner space forms the oil sump;And/or
The shell includes oil cylinder (201) and oil head cover (202), and the oil cylinder (201) has open topped, institute
It states oil head cover (202) to be connected to the top of the oil cylinder (201) and seal the open topped, the oil gas outlet
(205) it is set on the oil head cover (202).
3. oil eliminator (2) according to claim 1, which is characterized in that the shell includes oil cylinder (201), institute
State oil air inlet (204) be set on the oil cylinder (201) and the center line of the oil air inlet (204) with it is described
The centreline space of oil cylinder (201) is at a certain distance.
4. oil eliminator (2) according to claim 1, which is characterized in that the oil separating structure is set to the oil sump
With the top of the oil-returning structure.
5. oil eliminator (2) according to claim 1, which is characterized in that the oil separating structure includes filter screen
(211), the filter screen (211) is between the oil air inlet (204) and the oil sump.
6. oil eliminator (2) according to claim 1, which is characterized in that the oil eliminator (2) is described including being set to
Liquid-sighting glass (210) on shell.
7. oil eliminator (2) according to any one of claim 1 to 6, which is characterized in that line is perpendicular centered on the shell
The revolving body being directly arranged.
8. oil eliminator (2) according to any one of claim 1 to 6, which is characterized in that the oil-returning structure is set to
In the shell, the import of the oil return air inlet pipe (206) and the outlet of the oil return flowline (207) are outer with the shell
Portion is connected to.
9. a kind of air-conditioner set, including compressor and oil eliminator, which is characterized in that the oil eliminator is according to claim
Oil eliminator (2) described in any one of 1 to 8, the oil gas outlet (205) of the import of the compressor and the oil eliminator
Connection, the outlet of the compressor is connected to the oil air inlet (204) of the oil eliminator.
10. air-conditioner set according to claim 9, which is characterized in that the air-conditioner set further includes evaporator, the steaming
Hair device includes being exported for drawing the fluid of fluid, the oil return air inlet pipe (206) and the fluid outlet.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810126591.5A CN108362049A (en) | 2018-02-08 | 2018-02-08 | Oil separator and air conditioning unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810126591.5A CN108362049A (en) | 2018-02-08 | 2018-02-08 | Oil separator and air conditioning unit |
Publications (1)
Publication Number | Publication Date |
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CN108362049A true CN108362049A (en) | 2018-08-03 |
Family
ID=63005220
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201810126591.5A Pending CN108362049A (en) | 2018-02-08 | 2018-02-08 | Oil separator and air conditioning unit |
Country Status (1)
Country | Link |
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CN (1) | CN108362049A (en) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201628421U (en) * | 2009-07-29 | 2010-11-10 | 昆山台佳机电有限公司 | Intermediate oil return cooling device used for flooded screw stem water-ground source heat pump unit |
CN202092392U (en) * | 2011-06-10 | 2011-12-28 | 珠海格力电器股份有限公司 | Oil separator and air conditioner with same |
CN203310162U (en) * | 2013-05-28 | 2013-11-27 | 北京永源热泵有限责任公司 | Falling film type water source heat pump |
CN205136025U (en) * | 2015-11-17 | 2016-04-06 | 珠海格力电器股份有限公司 | Compressor and vertical oil separator thereof |
CN105627642A (en) * | 2014-11-27 | 2016-06-01 | 青岛海尔空调电子有限公司 | Oil returning device for heat exchanger unit |
CN106225323A (en) * | 2016-09-05 | 2016-12-14 | 珠海格力电器股份有限公司 | Refrigerating unit and oil return device thereof |
CN106440538A (en) * | 2016-10-21 | 2017-02-22 | 珠海格力电器股份有限公司 | Oil return system of flooded evaporator and water-cooled air conditioning unit adopting same |
CN207865772U (en) * | 2018-02-08 | 2018-09-14 | 珠海格力电器股份有限公司 | Oil separator and air conditioning unit |
-
2018
- 2018-02-08 CN CN201810126591.5A patent/CN108362049A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201628421U (en) * | 2009-07-29 | 2010-11-10 | 昆山台佳机电有限公司 | Intermediate oil return cooling device used for flooded screw stem water-ground source heat pump unit |
CN202092392U (en) * | 2011-06-10 | 2011-12-28 | 珠海格力电器股份有限公司 | Oil separator and air conditioner with same |
CN203310162U (en) * | 2013-05-28 | 2013-11-27 | 北京永源热泵有限责任公司 | Falling film type water source heat pump |
CN105627642A (en) * | 2014-11-27 | 2016-06-01 | 青岛海尔空调电子有限公司 | Oil returning device for heat exchanger unit |
CN205136025U (en) * | 2015-11-17 | 2016-04-06 | 珠海格力电器股份有限公司 | Compressor and vertical oil separator thereof |
CN106225323A (en) * | 2016-09-05 | 2016-12-14 | 珠海格力电器股份有限公司 | Refrigerating unit and oil return device thereof |
CN106440538A (en) * | 2016-10-21 | 2017-02-22 | 珠海格力电器股份有限公司 | Oil return system of flooded evaporator and water-cooled air conditioning unit adopting same |
CN207865772U (en) * | 2018-02-08 | 2018-09-14 | 珠海格力电器股份有限公司 | Oil separator and air conditioning unit |
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