CN203605531U - Oil returning device for variable-frequency multi-connected air conditioning unit - Google Patents
Oil returning device for variable-frequency multi-connected air conditioning unit Download PDFInfo
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- CN203605531U CN203605531U CN201320537081.XU CN201320537081U CN203605531U CN 203605531 U CN203605531 U CN 203605531U CN 201320537081 U CN201320537081 U CN 201320537081U CN 203605531 U CN203605531 U CN 203605531U
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- oil
- cylindrical shell
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- compressor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The utility model discloses an oil returning device of a frequency conversion multi-connected air conditioning unit. A fixed frequency compressor (3) and a variable-frequency compressor (4) are arranged in parallel. An air outlet I (5) of the fixed frequency compressor (3) is communicated with an air inlet pipe I (7) arranged at the side surface of an oil separator I (1) via an air outlet pipe I (6). An air outlet II (8) of the variable-frequency compressor (4) is communicated with an air inlet pipe II (10) arranged at the side surface of an oil separator II (2) via an air outlet pipe II (9). An air exhaust pipe I (11) arranged at the upper end of the oil separator I (1) and an air exhaust pipe II (12) arranged at the upper end of the oil separator II (2) are arranged in parallel. An oil returning port (13) arranged at the lower end of the oil separator I (1) is communicated with an oil inlet II (14) of the variable-frequency compressor (4). An oil returning port (15) at the lower end of the oil separator II (2) is communicated with an oil inlet I (29) of the fixed frequency compressor (3).
Description
Technical field
The utility model relates to a kind of oil return apparatus of multi-evaporator inverter air conditioner unit.
Background technology
As shown in Figure 1, trip separator 1 ' in the oil return apparatus of multi-evaporator inverter air conditioner unit is by the filtration of which floor woven wire 2 ' in the time of air inlet at present, by the lubricating oil separation in entrained gas cold-producing medium out, and lower drippage is gathered in container 3 ' bottom, when the lubricants capacity of assembling reaches after certain altitude, get back to compressor crankcase by oil return capillary 4 ', although this oil eliminator is simple in structure, manufacture method, but point oily effect is not high, in the time that two compressors are in parallel, owing to occurring different capacities, easily cause partially oily phenomenon, wherein frequency-changeable compressor is after long-term low frequency running, easily cause compressor oil level to reduce, oil lodges in system, , unfavorable to compressor operating, easily damage compressor.
Summary of the invention
The utility model provides a kind of oil return apparatus of multi-evaporator inverter air conditioner unit, and it not only can improve oily separative efficiency, and unnecessary oil can be discharged to compressor, redistributes, and guarantees that compressor does not lose oil simultaneously, and cycle period is long, not impact effect.
The utility model has adopted following technical scheme: a kind of oil return apparatus of multi-evaporator inverter air conditioner unit, it comprises oil eliminator I, oil eliminator II, invariable frequency compressor and frequency-changeable compressor, invariable frequency compressor and frequency-changeable compressor are arranged in parallel, be connected with the air inlet pipe I that oil eliminator I side is provided with by escape pipe I in the gas outlet of invariable frequency compressor I, the gas outlet II of frequency-changeable compressor is connected with the air inlet pipe II that oil eliminator II side is provided with by escape pipe II, the blast pipe II that the blast pipe I that oil eliminator I upper end is provided with and oil eliminator II upper end are provided with is arranged in parallel, the oil return opening I that oil eliminator I lower end is provided with is connected with the oil-in II of frequency-changeable compressor, the oil return opening II of oil eliminator II lower end is connected with the oil-in I of invariable frequency compressor.
Described oil eliminator I is provided with cylindrical shell I, air inlet pipe I is arranged on the air inlet I place of cylindrical shell I side, air inlet pipe I is inserted into gas port I and air inlet I for being rotationally connected, air inlet pipe I comprises straight tube I and bend pipe I, straight tube I is positioned at outside cylindrical shell I, straight tube I is connected with the gas outlet I of invariable frequency compressor by escape pipe I, bend pipe I is positioned at cylindrical shell I, rotate air inlet pipe I and regulate the angle of bend pipe I in cylindrical shell I, blast pipe I is arranged on the upper end of cylindrical shell I, insert in cylindrical shell I blast pipe I one end, oil return opening I is positioned at the lower end of cylindrical shell I, oil return opening I is connected with the oil-in II of frequency-changeable compressor by capillary, described oil eliminator II is provided with cylindrical shell II, air inlet pipe II is arranged on the air inlet II place of cylindrical shell II side, air inlet pipe II is inserted into gas port II and air inlet II for being rotationally connected, air inlet pipe II comprises straight tube II and bend pipe II, straight tube II is positioned at outside cylindrical shell II, straight tube II is connected with the gas outlet II of frequency-changeable compressor by escape pipe II, bend pipe II is positioned at cylindrical shell II, rotate air inlet pipe II and regulate the angle of bend pipe II in cylindrical shell II, blast pipe II is arranged on the upper end of cylindrical shell II, insert in cylindrical shell II blast pipe II one end, oil return opening II is positioned at the lower end of cylindrical shell II, oil return opening II is connected with the oil-in I of invariable frequency compressor by capillary II, the other end of the other end of blast pipe I and blast pipe II is parallel with one another.Described straight tube I and bend pipe I are connected to entirety.Described straight tube II and bend pipe II are connected to entirety.Described bend pipe I is positioned at the height of cylindrical shell I higher than the termination of blast pipe I insertion cylindrical shell I one end.Described bend pipe II is positioned at the height of cylindrical shell II higher than the termination of blast pipe II insertion cylindrical shell II one end.Described escape pipe I is provided with check valve I.Described escape pipe II is provided with check valve II.
The utlity model has following beneficial effect: adopted after above technical scheme, the utility model is discharged oil gas mixture from the gas outlet of invariable frequency compressor and frequency-changeable compressor, through oil eliminator import, tangentially enter in cylinder, by clashing into after tube wall deceleration, rotational flow from top to bottom, oil droplet in exhaust is thrown away to separation, collect in cylinder body bottom, the oil of separating again by height pressure reduction from oil-out at the bottom of cylinder, flow back to compressor through capillary step-down, can greatly improve like this efficiency that oil separates, be increased to 95% from 85%.When invariable frequency compressor of the present utility model and frequency-changeable compressor are in parallel, adopt the technical solution of the utility model can effectively guarantee compressor minimum safe oil level, by pressure reduction, oil more than needed compressor is discharged, enter oil eliminator, oil is redistributed, part oil circulates in system with exhaust, and a part gets back to by oil eliminator capillary the compressor that oil is few, has effectively improved oily utilization rate.The utility model has adopted the oily restoration methods of multi-evaporator inverter air conditioner unit, first invariable frequency compressor is opened within the fixed cycle to running, frequency-changeable compressor continues 5 minutes with the high frequency running of setting, thereby improve the cooling cycle system oil gas speed of multi-evaporator inverter air conditioner unit, the long-pending oil content retaining in cooling cycle system the most at last is not taken back invariable frequency compressor and frequency-changeable compressor, thereby recover the oil level of invariable frequency compressor and frequency-changeable compressor, this method oil is short recovery time, and impact effect not while heating.Air inlet pipe I of the present utility model and air inlet pipe II can be adjusted the angle and the cylindrical shell pipe diameter size that stretch in cylindrical shell, control gas and tube wall collision angle, and meet the volume requirements of different displacements compressor by changing the internal diameter of air inlet pipe and cylinder internal diameter.
Accompanying drawing explanation
Fig. 1 is the structural representation of original oil eliminator.
Fig. 2 is structural representation of the present utility model.
Fig. 3 is the structural representation of the utility model oil eliminator I.
Fig. 4 is the top view of Fig. 3..
Fig. 5 is the structural representation of the utility model oil eliminator II.
Fig. 6 is the top view of Fig. 5.
Fig. 7 is the structural representation of the utility model liquid-sighting glass.
The specific embodiment
In Fig. 2, the oil return apparatus of a kind of multi-evaporator inverter air conditioner unit of the utility model, it comprises oil eliminator I 1, oil eliminator II 2, invariable frequency compressor 3 and frequency-changeable compressor 4, invariable frequency compressor 3 is arranged in parallel with frequency-changeable compressor 4, be connected with the air inlet pipe I 7 that oil eliminator I 1 side is provided with by escape pipe I 6 in the gas outlet of invariable frequency compressor 3 I 5, escape pipe I 6 is provided with check valve I 27, the gas outlet II 8 of frequency-changeable compressor 4 is connected with the air inlet pipe II 10 that oil eliminator II 2 sides are provided with by escape pipe II 9, escape pipe II 9 is provided with check valve II 28, the blast pipe II 12 that blast pipe I 11 and oil eliminator II 2 upper ends that oil eliminator I 1 upper end is provided with are provided with is arranged in parallel, the oil return opening I 13 that oil eliminator I 1 lower end is provided with is connected with the oil-in II 14 of frequency-changeable compressor 3, the oil return opening II 15 of oil eliminator II 2 lower ends is connected with the oil-in I 15 of invariable frequency compressor 3, in Fig. 3 and Fig. 4, oil eliminator I 1 is provided with cylindrical shell I 16, air inlet pipe I 7 is arranged on air inlet I 17 places of cylindrical shell I 16 sides, air inlet pipe I 7 be inserted into gas port I 17 with air inlet I 17 for being rotationally connected, air inlet pipe I 7 comprises straight tube I 18 and bend pipe I 19, straight tube I 18 is set to entirety with bend pipe I 19, straight tube I 18 is positioned at outside cylindrical shell I 16, straight tube I 16 is connected with the gas outlet I 5 of invariable frequency compressor by escape pipe I 6, bend pipe I 19 is positioned at cylindrical shell I 16, rotate air inlet pipe I 7 and regulate the angle of bend pipe I 19 in cylindrical shell I 16, blast pipe I 11 is arranged on the upper end of cylindrical shell I 16, insert in cylindrical shell I 16 blast pipe I 11 one end, the height that bend pipe I 19 is positioned at cylindrical shell I 16 inserts the termination of cylindrical shell I 16 one end higher than blast pipe I 11, oil return opening I 13 is positioned at the lower end of cylindrical shell I 16, oil return opening I 13 is connected with the oil-in II 14 of frequency-changeable compressor 4 by capillary I 20, in Fig. 5 and Fig. 6, described oil eliminator II 2 is provided with cylindrical shell II 21, air inlet pipe II 10 is arranged on air inlet II 22 places of cylindrical shell II 21 sides, air inlet pipe II 10 be inserted into gas port II 22 with air inlet II 22 for being rotationally connected, air inlet pipe II 10 comprises straight tube II 23 and bend pipe II 24, straight tube II 23 is connected to entirety with bend pipe II 24, straight tube II 23 is positioned at outside cylindrical shell II 21, straight tube II 23 is connected with the gas outlet II 8 of frequency-changeable compressor 4 by escape pipe II 8, bend pipe II 24 is positioned at cylindrical shell II 21, rotate air inlet pipe II 10 and regulate the angle of bend pipe II 24 in cylindrical shell II 21, blast pipe II 12 is arranged on the upper end of cylindrical shell II 21, insert in cylindrical shell II 21 blast pipe II 12 one end, the height that bend pipe II 24 is positioned at cylindrical shell II 21 inserts the termination of cylindrical shell II 21 one end higher than blast pipe II 12, oil return opening II 15 is positioned at the lower end of cylindrical shell II 21, oil return opening II 15 is connected with the oil-in I 29 of invariable frequency compressor 3 by capillary II 26, the other end of the other end of blast pipe I 11 and blast pipe II 12 is parallel with one another, in Fig. 7, on invariable frequency compressor 3 and frequency-changeable compressor 4, be all provided with liquid-sighting glass 25.
The oil gas mixture that the gas outlet I 5 of the utility model invariable frequency compressor 3 and the gas outlet II 8 of frequency-changeable compressor 4 are discharged is input to respectively in oil eliminator I 1 and oil eliminator II 2, after oil eliminator I 1 and oil eliminator II 2 enter, tangentially enter respectively in cylindrical shell I 16 and cylindrical shell II 21, by clashing into after tube wall deceleration, rotational flow from top to bottom, oil droplet in exhaust is thrown away to separation, collect in cylinder bottom, the oil of separating again by height pressure reduction from oil-out at the bottom of cylinder, flow back to compressor through capillary I 20 and 26 step-downs of capillary II.
The invention also discloses a kind of oily restoration methods of multi-evaporator inverter air conditioner unit, it comprises the following steps its feature: first invariable frequency compressor 3 is opened to running within the fixed cycle, fixed cycle is 3 hours, frequency-changeable compressor 4 continues 5 minutes with the high frequency running of setting, thereby improve the cooling cycle system oil gas speed of multi-evaporator inverter air conditioner unit, the long-pending oil content retaining in cooling cycle system the most at last is not taken back invariable frequency compressor 3 and frequency-changeable compressor 4, thereby recovers the oil level of invariable frequency compressor 3 and frequency-changeable compressor 4.
Claims (8)
1. the oil return apparatus of a multi-evaporator inverter air conditioner unit, it is characterized in that it comprises oil eliminator I (1), oil eliminator II (2), invariable frequency compressor (3) and frequency-changeable compressor (4), invariable frequency compressor (3) is arranged in parallel with frequency-changeable compressor (4), gas outlet I (5) at invariable frequency compressor (3) is connected with the air inlet pipe I (7) that oil eliminator I (1) side is provided with by escape pipe I (6), the gas outlet II (8) of frequency-changeable compressor (4) is connected with the air inlet pipe II (10) that oil eliminator II (2) side is provided with by escape pipe II (9), the blast pipe I (11) that oil eliminator I (1) upper end is provided with is arranged in parallel with the blast pipe II (12) that oil eliminator II (2) upper end is provided with, the oil return opening I (13) that oil eliminator I (1) lower end is provided with is connected with the oil-in II (14) of frequency-changeable compressor (4), the oil return opening II (15) of oil eliminator II (2) lower end is connected with the oil-in I (29) of invariable frequency compressor (3).
2. the oil return apparatus of multi-evaporator inverter air conditioner unit according to claim 1, it is characterized in that described oil eliminator I (1) is provided with cylindrical shell I (16), air inlet pipe I (7) is arranged on the air inlet I (17) of cylindrical shell I (16) side and locates, air inlet pipe I (7) is inserted into gas port I (17) and air inlet I (17) for being rotationally connected, air inlet pipe I (7) comprises straight tube I (18) and bend pipe I (19), straight tube I (18) is positioned at outside cylindrical shell I (16), straight tube I (16) is connected with the gas outlet I (5) of invariable frequency compressor by escape pipe I (6), bend pipe I (19) is positioned at cylindrical shell I (16), rotate air inlet pipe I (7) and regulate the angle of bend pipe I (19) in cylindrical shell I (16), blast pipe I (11) is arranged on the upper end of cylindrical shell I (16), insert in cylindrical shell I (16) blast pipe I (11) one end, oil return opening I (13) is positioned at the lower end of cylindrical shell I (16), oil return opening I (13) is connected with the oil-in II (14) of frequency-changeable compressor (4) by capillary I (20), described oil eliminator II (2) is provided with cylindrical shell II (21), air inlet pipe II (10) is arranged on the air inlet II (22) of cylindrical shell II (21) side and locates, air inlet pipe II (10) is inserted into gas port II (22) and air inlet II (22) for being rotationally connected, air inlet pipe II (10) comprises straight tube II (23) and bend pipe II (24), straight tube II (23) is positioned at outside cylindrical shell II (21), straight tube II (23) is connected with the gas outlet II (8) of frequency-changeable compressor (4) by escape pipe II (8), bend pipe II (24) is positioned at cylindrical shell II (21), rotate air inlet pipe II (10) and regulate the angle of bend pipe II (24) in cylindrical shell II (21), blast pipe II (12) is arranged on the upper end of cylindrical shell II (21), insert in cylindrical shell II (21) blast pipe II (12) one end, oil return opening II (15) is positioned at the lower end of cylindrical shell II (21), oil return opening II (15) is connected with the oil-in I (15) of invariable frequency compressor (3) by capillary II (26), the other end of the other end of blast pipe I (11) and blast pipe II (12) is parallel with one another.
3. the oil return apparatus of multi-evaporator inverter air conditioner unit according to claim 2, is characterized in that described straight tube I (18) and bend pipe I (19) are connected to entirety.
4. the oil return apparatus of multi-evaporator inverter air conditioner unit according to claim 2, is characterized in that described straight tube II (23) and bend pipe II (24) are connected to entirety.
5. the oil return apparatus of multi-evaporator inverter air conditioner unit according to claim 2, is characterized in that described bend pipe I (19) is positioned at the height of cylindrical shell I (16) higher than the termination of blast pipe I (11) insertion cylindrical shell I (16) one end.
6. the oil return apparatus of multi-evaporator inverter air conditioner unit according to claim 2, is characterized in that described bend pipe II (24) is positioned at the height of cylindrical shell II (21) higher than the termination of blast pipe II (12) insertion cylindrical shell II (21) one end.
7. the oil return apparatus of multi-evaporator inverter air conditioner unit according to claim 1, is characterized in that described escape pipe I (6) is provided with check valve I (27).
8. the oil return apparatus of multi-evaporator inverter air conditioner unit according to claim 1, is characterized in that described escape pipe II (9) is provided with check valve II (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320537081.XU CN203605531U (en) | 2013-08-31 | 2013-08-31 | Oil returning device for variable-frequency multi-connected air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320537081.XU CN203605531U (en) | 2013-08-31 | 2013-08-31 | Oil returning device for variable-frequency multi-connected air conditioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203605531U true CN203605531U (en) | 2014-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320537081.XU Expired - Fee Related CN203605531U (en) | 2013-08-31 | 2013-08-31 | Oil returning device for variable-frequency multi-connected air conditioning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203605531U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486769A (en) * | 2013-08-31 | 2014-01-01 | 江苏春兰空调设备有限公司 | Oil returning device and oil recovering method of frequency conversion multi-union air conditioning unit |
-
2013
- 2013-08-31 CN CN201320537081.XU patent/CN203605531U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486769A (en) * | 2013-08-31 | 2014-01-01 | 江苏春兰空调设备有限公司 | Oil returning device and oil recovering method of frequency conversion multi-union air conditioning unit |
| CN103486769B (en) * | 2013-08-31 | 2016-05-04 | 江苏春兰空调设备有限公司 | A kind of oil return apparatus of multi-evaporator inverter air conditioner unit and oily restoration methods thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20180831 |
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| CF01 | Termination of patent right due to non-payment of annual fee |