CN106225323B - Refrigeration unit and its oil return apparatus - Google Patents
Refrigeration unit and its oil return apparatus Download PDFInfo
- Publication number
- CN106225323B CN106225323B CN201610806948.5A CN201610806948A CN106225323B CN 106225323 B CN106225323 B CN 106225323B CN 201610806948 A CN201610806948 A CN 201610806948A CN 106225323 B CN106225323 B CN 106225323B
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- Prior art keywords
- oil
- oil return
- gaseous coolant
- return apparatus
- compressor
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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
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating arrangements
-
- 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
- F25B2500/16—Lubrication
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a kind of refrigeration unit and its oil return apparatus, oil return apparatus includes：The oil level upper position of fuel tank, fuel tank is equipped with oil inlet and the first gaseous coolant outlet, and the first gaseous coolant outlet is connected with the air entry of compressor；Oil-gas Separation component, it includes being located at oil pocket and air cavity that Oil-gas Separation component, which has cavity structure, cavity structure, and oil pocket is equipped with oil outlet, and air cavity is equipped with mixture intake and the second gaseous coolant outlet, and the second gaseous coolant outlet is connected with the air entry of compressor；First injector is connected with evaporator and mixture intake；Second injector, is connected with oil outlet and oil inlet.Oil return apparatus provided by the invention, each oil return line can concentrate near fuel tank, or even can be directly anchored on fuel tank.Oil return line span is smaller, saves larger space, and vibration resistance preferably, dismounting when be not easy clashing and breaking oil return line, the interface of oil return line need not be opened up on the compressor, reduce sealing difficulty.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, more specifically to a kind of refrigeration unit and its oil return apparatus.
Background technology
In the process of running, the parts of lubricating oil in compressor can penetrate into coolant system to the compressor of refrigeration unit, and most
It is accumulated in the evaporator of refrigeration unit eventually.As not in time separated oil, set heat exchange efficiency and compressor will be influenced
Bearing reliability.
To solve problem of oil return, the oil in evaporator is usually introduced into compressor air suction with refrigerant mixture in the prior art
Mouthful, herein, refrigerant, which gasifies, simultaneously to be siphoned away by compressor, oily then be deposited in air entry bottom.Then again by oil return line by bottom
Oily injection to fuel tank, achieve the purpose that separation oil and refrigerant.
There are relatively long distance, oil return line first to lead to air entry since the air entry position of compressor is higher, and to fuel tank, then
Fuel tank is led to, oil return line span is big, can occupy more space and vibration resistance is weaker.When compressor is dismantled, oil return line also holds
Easily broken by compressor.In addition two interfaces need to be opened on compressor casting, are increased machining and are measured, and increase compressor
Sealing difficulty.
Therefore, how to avoid causing because oil return line is arranged that occupied space is more, vibration resistance is weaker, oil return line is easy
The problem of by clashing and breaking and increasing compressor seal difficulty becomes those skilled in the art's important technology to be solved and asks
Topic.
Invention content
In view of this, the present invention provides a kind of oil return apparatus, each oil return line can concentrate near fuel tank, or even can be straight
It connects and is fixed on fuel tank.Oil return line span is smaller, has saved larger space, and vibration resistance preferably, dismounting when be not easy
Clashing and breaking oil return line need not open up the interface of oil return line, reduce sealing difficulty on the compressor.The present invention also provides
A kind of refrigeration unit including above-mentioned oil return apparatus.
The present invention provides a kind of oil return apparatus of refrigeration unit, including：
The oil level upper position of fuel tank, the fuel tank is equipped with oil inlet and the first gaseous coolant outlet, first gas
State refrigerant exit is connected with the air entry of compressor；
Oil-gas Separation component, it includes being located at its underpart that the Oil-gas Separation component, which has cavity structure, the cavity structure,
Oil pocket and air cavity positioned at the oil pocket top, the oil pocket be equipped with oil outlet, the air cavity be equipped with mixture intake and
Second gaseous coolant outlet, second gaseous coolant outlet are connected with the air entry of compressor；
First injector is connected with evaporator and the mixture intake, and first injector passes through high pressure gas
The mixture of refrigerant and oil in evaporator is introduced to the mixture intake by body；
Second injector is connected with the oil outlet and the oil inlet, and second injector passes through high pressure gas
Oil in the oil pocket is introduced to the oil inlet.
Preferably, the Oil-gas Separation component is U-typed pipe, and the lower part tube chamber of the U-typed pipe is the oil pocket；It is described
First gaseous coolant outlet is connected by refrigerant pipe with the air entry of the compressor, two upper ports of the U-typed pipe
It is connected respectively with the refrigerant pipe.
Preferably, the Oil-gas Separation component is U-typed pipe, and the height of the lower part tube chamber of the U-typed pipe is more than described
The height of the intraluminal oil level in lower part, a upper port and the first gaseous coolant outlet of the U-typed pipe pass through refrigerant pipe
It is connected, another upper port of the U-typed pipe is second gaseous coolant outlet and is connected with the air entry of compressor
It is logical.
Preferably, the Oil-gas Separation component is straight tube-like structure.
Preferably, first injector and second injector are connected with the interface of condenser, are described to pass through
Condenser provides the high pressure gas.
Preferably, second gaseous coolant outlet is located at the top of the mixture intake.
Preferably, the oil outlet is arranged in the bottom of the oil pocket.
Preferably, oil guard is equipped at the first gaseous coolant outlet of the fuel tank.
Preferably, the oil guard includes at least two layers of oil baffle, and the oil baffle is staggered, to be formed repeatedly
The gaseous coolant channel of detour.
Preferably, the oil guard further includes leakproof oil net.
The present invention also provides a kind of refrigeration units, are equipped with oil return apparatus, and the oil return apparatus is oil return as described above
Device.
In technical solution provided by the invention, first gaseous coolant outlet on the top of fuel tank and the air entry phase of compressor
Connection, since the air entry pressure of compressor is very low, the gaseous coolant in fuel tank can be inhaled into the air entry of compressor.This
The oil return apparatus that invention provides further includes Oil-gas Separation component, which is equipped with oil pocket and air cavity, and oil pocket is equipped with out
Hydraulic fluid port, air cavity are equipped with mixture intake and the second gaseous coolant outlet, the air entry of the second gaseous coolant outlet and compressor
It is connected.First injector is by high pressure gas, by the mixture injection of oil and refrigerant in evaporator to Oil-gas Separation component
Mixture intake, since air cavity is connected by the second gaseous coolant outlet with the air entry of compressor, the suction of compressor
Pressure at gas port is very low, and the refrigerant in mixture will be inhaled into the air entry of compressor after gasification, and the oil in mixture is then
It precipitates and is flowed into oil pocket, after continuing for some time, the oil in evaporator is accumulated in the oil pocket of Oil-gas Separation component, it
Oil is introduced into fuel tank by the second injector again afterwards, to achieve the purpose that Oil-gas Separation.So set, this programme exists
When arranging oil pipe, it can concentrate near fuel tank, or even can be directly anchored on fuel tank.Pipeline span smaller, saves more skies
Between, vibration resistance preferably, dismounting when be not easy clashing and breaking oil return line, and the interface of oil return line need not be opened up on the compressor,
Reduce sealing difficulty.Simultaneously can be whole again after being pre-installed in advance to be filled to unit using these pipelines as component, dress can be promoted
With efficiency.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the schematic diagram of oil return apparatus in the first embodiment of the invention；
Fig. 2 is the schematic diagram of oil return apparatus in second of embodiment of the invention；
In Fig. 1-Fig. 2：
Fuel tank -11, Oil-gas Separation component -12, the first injector -13, the second injector -14, oil inlet -15,
One gaseous coolant outlet -16, oil pocket -17, air cavity -18, oil outlet -19, the second gaseous coolant outlet -20, mixture draw
Entrance -21, refrigerant pipe -22, oil baffle -23, leakproof oil net -24.
Specific implementation mode
The core of present embodiment is to provide a kind of oil return apparatus, and each oil return line can concentrate near fuel tank,
It can even be directly anchored on fuel tank.Oil return line span is smaller, has saved larger space, and vibration resistance is preferable, tears open
It is not easy clashing and breaking oil return line when unloading, the interface of oil return line need not be opened up on the compressor, reduce sealing difficulty.This is specific
The core of embodiment, which also resides in, provides a kind of refrigeration unit including the oil return apparatus.
Hereinafter, being illustrated to embodiment with reference to attached drawing.In addition, embodiments illustrated below is not to recorded in claim
Invention content rise any restriction effect.In addition, the full content of the composition represented by following example is not limited to as right
It is required that necessary to the solution of recorded invention.
It please refers to Fig.1 and Fig. 2, the oil return apparatus that present embodiment provides, including fuel tank 11, Oil-gas Separation component
12, the first injector 13 and the second injector 14.
Wherein, the oil level upper position of fuel tank 11 is equipped with oil inlet 15 and the first gaseous coolant outlet 16, the first gaseous state
Refrigerant exit 16 is connected with the air entry of compressor.
It should be noted that the oil level upper position of above-mentioned fuel tank 11, refer to refrigeration unit at runtime, in fuel tank 11
Oil level of oil mass when reaching maximum.
It includes oil pocket 17 and air cavity 18 that Oil-gas Separation component 12, which has cavity structure, cavity structure, in the present embodiment, due to
Oil can deposit downwards, and oil pocket 17 is arranged in the lower part of cavity structure, and air cavity 18 is located at 17 top of oil pocket, and being equipped with for oil pocket 17 is fuel-displaced
Mouth 19, for the ease of fuel-displaced, oil outlet 19 is preferably provided at the bottom of oil pocket 17, and air cavity 18 is equipped with mixture intake 21, oil
Gas mixture is entered by the mixture inlet in air cavity 18, and the oil in gas mixture, which can flow downward, deposits to oil pocket 17
In.
The top position of mixture intake 21 is equipped with the second gaseous coolant outlet 20, the second gaseous coolant outlet 20 and pressure
The air entry of contracting machine is connected.The nouns of locality such as " top " described herein, " lower part " are that oil return apparatus is in such as Fig. 1 and Fig. 2
In state when meaning.Second gaseous coolant outlet 20 is arranged in the top position of mixture intake 21, can make to isolate
The gas come flows up, and oil deposits downwards, and oil gas is avoided to mix again.
In technical solution provided in this embodiment, the suction of first gaseous coolant outlet 16 and compressor on the top of fuel tank 11
Gas port is connected, and since the air entry pressure of compressor is very low, the gaseous coolant in fuel tank 11 can be inhaled into the suction of compressor
In gas port.
First injector 13 is by high pressure gas, by the mixture injection of oil and refrigerant in evaporator to Oil-gas Separation portion
The mixture intake 21 of part 12, since air cavity 18 is connected by the second gaseous coolant outlet 20 with the air entry of compressor,
Pressure at the air entry of compressor is very low, and the refrigerant in mixture will be inhaled into the air entry of compressor after gasification, mixing
Oil in object, which then precipitates, to be flowed into oil pocket 17, and after continuing for some time, the oil accumulation in evaporator is in Oil-gas Separation portion
In the oil pocket 17 of part 12, oil is introduced into fuel tank 11 by the second injector 14 again later, to reach Oil-gas Separation
Purpose.
So set, this programme can be concentrated on when arranging oil pipe near fuel tank 11, or even fuel tank 11 can be directly anchored to
On.And pipeline span smaller, save more spaces, vibration resistance preferably, dismounting when be not easy clashing and breaking oil return line, be in addition not required to
The interface that open up oil return line on the compressor, reduces sealing difficulty.It simultaneously can be using these pipelines as component, in advance in advance
It is whole again after installing to be filled to unit, efficiency of assembling can be promoted.
In the first embodiment, the Oil-gas Separation component 12 in this programme specific as follows can state setting.Please refer to figure
1, Oil-gas Separation component 12 can be specially U-typed pipe, and the lower part tube chamber of U-typed pipe is oil pocket 17.It is detached from gas mixture
Oil out can accumulate the lower part tube chamber of full U-typed pipe.
First gaseous coolant outlet 16 of fuel tank 11 is connected by refrigerant pipe 22 with the air entry of compressor, U-typed pipe
Two upper ports be connected respectively with refrigerant pipe 22.Moreover, the side tube section in U-typed pipe is arranged in mixture intake 21, mix
Close object intake 21 and gas mixture be introduced into side tube section, oil is deposited in the lower part tube chamber of U-typed pipe downwards, refrigerant then to
Upper flowing is flowed out by the second gaseous coolant outlet 20.
Technical solution provided in this embodiment, only need to be arranged a refrigerant pipe 22 can by fuel tank 11 gaseous coolant and
Gaseous coolant in U-typed pipe is all introduced into compressor, and pipeline setting is simple.
In second of embodiment, referring to FIG. 2, the height of the lower part tube chamber of U-typed pipe is more than the height of oil level, it should
The height of oil level refers to oil level when oil mass maximum in the lower part tube chamber of U-typed pipe when refrigeration unit normal operation
Highly.So set, still having some spaces above oil level.A upper port and the first gaseous coolant of U-typed pipe go out
Mouthfuls 16 are connected by refrigerant pipe 22, another upper port of U-typed pipe be the second gaseous coolant outlet 20 and with compressor
Air entry is connected.
In this way, the gaseous coolant in fuel tank 11 can be first into U-typed pipe, due on the oil level in U-typed pipe
Side still has some spaces, and one end that the gaseous coolant in fuel tank 11 can pass through U-typed pipe reaches the other end, draws with mixture
The gaseous coolant that the gas mixture that entrance 21 introduces is separated enters in compressor together.
Certainly, in the present embodiment, above-mentioned Oil-gas Separation component 12 or other types of structure.For example, can be one
The lower part of a straight tube, straight tube is oil pocket 17, and top is air cavity 18, and the upper end of straight tube is the second gaseous coolant outlet 20, and lower end is set
There are oil outlet 19, mixture intake 21 to be arranged on the side wall of straight tube.
In the present embodiment, the first injector 13 and the second injector 14 are somebody's turn to do using high pressure gas as injection power source
High pressure gas can be provided by condenser, and interface can specifically be arranged on condenser, will by the pipeline being connected with interface
High pressure gas leads to the first injector 13 and the second injector 14.
In the preferred embodiment of the present embodiment, oil guard is equipped at the first gaseous coolant outlet 16 of fuel tank 11.By height
After oil is introduced to fuel tank 11 by body of calming the anger, high pressure gas is returned to by the first gaseous coolant outlet 16 in compressor, oil guard
Oil can be avoided as high pressure gas is flow back into compressor.
Oil guard can specifically include at least two layers of oil baffle 23, and the oil baffle 23 is staggered, is anti-to be formed
The gaseous coolant channel of multiple detour.Oil baffle 23 is staggered, and the gaseous coolant channel of detour is formed repeatedly, if in gaseous coolant
It is mixed with oil, oil can impinge upon on oil baffle 23, flow back into fuel tank 11.Further, in order to improve the oily effect of gear, oil dress is kept off
It can also includes leakproof oil net 24 to set.
Present embodiment additionally provides a kind of refrigeration unit, is equipped with oil return apparatus, which is as above to implement
Oil return apparatus described in example.So set, the refrigeration unit that present embodiment provides, each oil return line can concentrate on
Near fuel tank 11, or even it can be directly anchored on fuel tank 11.Oil return line span is smaller, has saved larger space, and
Vibration resistance preferably, dismounting when be not easy clashing and breaking oil return line, the interface of oil return line need not be opened up on the compressor, reduced close
Seal difficulty.The derivation of the advantageous effect and the derivation of advantageous effect caused by above-mentioned oil return apparatus are substantially similar,
Therefore repeats no more herein.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (11)
1. a kind of oil return apparatus of refrigeration unit, which is characterized in that including：
The oil level upper position of fuel tank (11), the fuel tank (11) is equipped with oil inlet (15) and the first gaseous coolant outlet
(16), first gaseous coolant outlet (16) is connected with the air entry of compressor；
Oil-gas Separation component (12), it includes being located at it that the Oil-gas Separation component (12), which has cavity structure, the cavity structure,
The oil pocket (17) of lower part and the air cavity (18) for being located at the oil pocket (17) top, the oil pocket (17) are equipped with oil outlet (19), institute
It states air cavity (18) and is equipped with mixture intake (21) and the second gaseous coolant outlet (20), second gaseous coolant outlet (20)
It is connected with the air entry of compressor；
First injector (13) is connected with evaporator and the mixture intake (21), and first injector (13) is logical
It crosses high pressure gas and the mixture of refrigerant and oil in evaporator is introduced to the mixture intake (21)；
Second injector (14) is connected with the oil outlet (19) and the oil inlet (15), second injector (14)
The oil in the oil pocket (17) is introduced to the oil inlet (15) by high pressure gas.
2. oil return apparatus as described in claim 1, which is characterized in that the Oil-gas Separation component (12) is U-typed pipe, described
The lower part tube chamber of U-typed pipe is the oil pocket (17)；First gaseous coolant outlet (16) by refrigerant pipe (22) with it is described
The air entry of compressor is connected, and two upper ports of the U-typed pipe are connected with the refrigerant pipe (22) respectively.
3. oil return apparatus as described in claim 1, which is characterized in that the Oil-gas Separation component (12) is U-typed pipe, described
The height of the lower part tube chamber of U-typed pipe is more than the height of the intraluminal oil level in the lower part, a upper end of the U-typed pipe
Mouth is connected with the first gaseous coolant outlet (16) by refrigerant pipe (22), another upper port of the U-typed pipe is described
Second gaseous coolant outlet (20) is simultaneously connected with the air entry of compressor.
4. oil return apparatus as described in claim 1, which is characterized in that the Oil-gas Separation component (12) is straight tube-like structure.
5. oil return apparatus as described in claim 1, which is characterized in that first injector (13) and second injector
(14) it is connected with the interface of condenser, to provide the high pressure gas by the condenser.
6. oil return apparatus as described in claim 1, which is characterized in that second gaseous coolant outlet (20) is located at described mixed
Close the top of object intake (21).
7. oil return apparatus as described in claim 1, which is characterized in that the oil outlet (19) is arranged in the oil pocket (17)
Bottom.
8. such as claim 1-7 any one of them oil return apparatus, which is characterized in that the first gaseous coolant of the fuel tank (11)
It exports and is equipped with oil guard at (16).
9. oil return apparatus as claimed in claim 8, which is characterized in that the oil guard includes at least two layers of oil baffle
(23), the oil baffle (23) is staggered, to form repeatedly the gaseous coolant channel of detour.
10. oil return apparatus as claimed in claim 9, which is characterized in that the oil guard further includes leakproof oil net (24).
11. a kind of refrigeration unit is equipped with oil return apparatus, which is characterized in that the oil return apparatus is as claim 1-10 is any
Oil return apparatus described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610806948.5A CN106225323B (en) | 2016-09-05 | 2016-09-05 | Refrigeration unit and its oil return apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610806948.5A CN106225323B (en) | 2016-09-05 | 2016-09-05 | Refrigeration unit and its oil return apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN106225323A CN106225323A (en) | 2016-12-14 |
| CN106225323B true CN106225323B (en) | 2018-10-19 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610806948.5A Active CN106225323B (en) | 2016-09-05 | 2016-09-05 | Refrigeration unit and its oil return apparatus |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362049A (en) * | 2018-02-08 | 2018-08-03 | 珠海格力电器股份有限公司 | Oil eliminator and air-conditioner set |
| CN109373650A (en) * | 2018-11-06 | 2019-02-22 | 珠海格力电器股份有限公司 | Ejection system and air-conditioning system |
| CN111076438A (en) * | 2019-12-11 | 2020-04-28 | 珠海格力电器股份有限公司 | Compressor and air conditioner with same |
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| CN206073507U (en) * | 2016-09-05 | 2017-04-05 | 珠海格力电器股份有限公司 | Refrigeration unit and its oil return apparatus |
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|---|---|---|---|---|
| CN1189712C (en) * | 2002-07-08 | 2005-02-16 | 株式会社电装 | Injector circulation |
| CN102364268A (en) * | 2011-10-31 | 2012-02-29 | 林勇 | High pressure injection oil return automobile air conditioner |
| CN202350390U (en) * | 2011-11-29 | 2012-07-25 | 重庆通用工业(集团)有限责任公司 | Automatic oil returning device for centrifugal type cold water or heat pump set |
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| CN106225323A (en) | 2016-12-14 |
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