CN206257825U - Microcomputer controls thermal siphon economizer screw ethylene glycol unit - Google Patents
Microcomputer controls thermal siphon economizer screw ethylene glycol unit Download PDFInfo
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- CN206257825U CN206257825U CN201621257815.9U CN201621257815U CN206257825U CN 206257825 U CN206257825 U CN 206257825U CN 201621257815 U CN201621257815 U CN 201621257815U CN 206257825 U CN206257825 U CN 206257825U
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Abstract
The utility model discloses a kind of microcomputer control thermal siphon economizer screw ethylene glycol unit, including compression unit and condensation evaporation unit, the compression unit includes suction filter, refrigeration compressor, oil eliminator, olein filter, oil pump, thermal siphon oil cooler, oily coarse filter and the motor for driving refrigeration compressor, and the condensation evaporation unit includes condenser, evaporator, device for drying and filtering and economizer；The compression unit also includes the first mounting seat, and the motor, refrigeration compressor, oil eliminator, thermal siphon oil cooler are arranged in the first mounting seat.The utility model uses the additional reservoirs such as the compressor set and condenser, evaporator of big capacity to constitute a complete refrigeration system, and increase economizer structure, unit refrigerating capacity is improved, unit eer is further improved, is adapted to provide sufficiently large refrigerating capacity under various operating modes.
Description
Technical field
The utility model is related to refrigeration system, and thermal siphon economizer screw ethylene glycol machine is controlled in particular to a kind of microcomputer
Group.
Background technology
Screw compressor is a kind of positive displacement compressor of revolution at a high speed, and being reduced by swept volume carries out gas pressure
Contracting, in addition to two screw rotors of revolution at a high speed, does not have other moving components, with the respective advantage of Rotary Compressor,
Such as small volume, lightweight, smooth running, few easy workout part, efficiency high, single-stage pressure ratio be big, energy step-less adjustment, in compressor row
Industry is developed rapidly and applied.Because Spiral Lobe Refrigeration Compressor single-stage has the when broad range of capacity of larger compression, because
This, screw type refrigerating compressor is widely used in each industrial circle such as air-conditioning, freezing, chemical industry, water conservancy, is special refrigerating field
It is not the optimal type in industrial refrigeration field.
However, the capacity of screw type refrigerating compressor group is limited at present, the refrigerating capacity of separate unit liquid unit is limited, is needing
Want refrigerating capacity than in the case of larger, it is necessary to select the requirement that many liquid units could meet cooling system amount.So, many
Small capacity liquid set is excessive, and each device each install by dispersed placement, causes troublesome maintenance, floor space big, mobile
Inconvenience, also add the cost of construction.Additionally, the oil cooler of screw type refrigerating compressor group uses water as cooling medium,
There is a problem of that heat exchanger tube scale effect oil cooler exchanges heat, and oil instability is fixed, is not suitable for water shortage or the poor area of water quality.
The content of the invention
The purpose of this utility model seeks to provide a kind of microcomputer control thermal siphon economizer screw ethylene glycol unit, should
Ethylene glycol unit uses the additional reservoirs such as the compressor set and condenser, evaporator of big capacity to constitute a complete refrigeration system
System, and increase economizer structure, unit refrigerating capacity is improved, unit eer is further improved, it is adapted to be provided under various operating modes
Sufficiently large refrigerating capacity.
To achieve the above object, the microcomputer control thermal siphon economizer screw ethylene glycol machine designed by the utility model
Group, including compression unit and condensation evaporation unit, the compression unit include suction filter, refrigeration compressor, oil eliminator,
Olein filter, oil pump, thermal siphon oil cooler, oily coarse filter and the motor for driving refrigeration compressor, it is described cold
Solidifying evaporation element includes condenser, evaporator, device for drying and filtering and economizer；
The oil-gas mixture outlet of the refrigeration compressor is connected with the oil-gas mixture entrance of the oil eliminator, described
The refrigerant gas gas outlet of oil eliminator is connected by oil blast pipe with the air inlet of the condenser, the condenser
First refrigerant liquid outlet is connected by thermal siphon oil cooler feed pipe with the refrigerant inlet of the thermal siphon oil cooler
Connect, the gas outlet of the thermal siphon oil cooler is connected by thermal siphon oil cooler muffler with the gas returning port of the condenser
Connect；
The second refrigerant liquid outlet of the condenser is connected with the inlet of the device for drying and filtering, the dry filter
The liquid outlet of device is connected with the inlet of the economizer, the liquid outlet of the economizer by evaporator feed pipe group with it is described
The inlet connection of evaporator, the gas outlet of the evaporator passes through the air inlet of compressor suction duct and the suction filter
Connection, the gas outlet of the suction filter is connected with the gas returning port of refrigeration compressor；
The refrigerator oil liquid outlet of the oil eliminator is connected with the refrigerator oil inlet of the thermal siphon oil cooler,
The liquid outlet of the thermal siphon oil cooler is connected with the inlet of the oily coarse filter, and the filtrate of the oily coarse filter goes out
Mouth is connected by oil pump with the inlet of the olein filter, filtrate (liquid and the refrigerant compression of the olein filter
The liquid return hole connection of machine.So, using the additional reservoir such as compressor set and condenser, evaporator of big capacity constitute one it is complete
Whole refrigeration system, and increase economizer structure, unit refrigerating capacity is improved, unit eer is further improved, it is adapted to various
Sufficiently large refrigerating capacity is provided under operating mode.Additionally, oil cooler is changed to thermal siphon oil cooler by the utility model unit, use
Freon substitutes water as cooling medium, it is to avoid the problem of heat exchanger tube scale effect oil cooler heat exchange, without water pump, oil temperature is steady
Fixed, reliable and cost performance rationally, is particularly suitable for water shortage or the poor area of water quality；Big capacity unit eer is higher than conventional
Unit, and increase economizer cooler construction, unit refrigerating capacity is improved, further improve unit eer.
Further, the compression unit also include the first mounting seat, the motor, refrigeration compressor, oil eliminator,
Thermal siphon oil cooler is arranged in the first mounting seat, and the suction filter is arranged on refrigeration compressor top, described
Olein filter, oil pump, oily coarse filter are arranged at thermal siphon oil cooler cylinder top.So, can be to compression unit
Equipment centralized arrangement install, reduce floor space, reduce construction cost.
Further, the compression unit also includes the automatically controlled instrument box being arranged in the first mounting seat.So, can be with
By automatically controlled control system realize to the automatic monitoring of screw compressor refrigerating unit operation conditions, the automatically controlling of the course of work, therefore
Hinder automatic detection and can in time protect shutdown when automatically processing and catastrophe failure occurring, it is to avoid unit is damaged.
Further, the condensation evaporation unit also includes the second mounting seat, and the evaporator, economizer are arranged at
In second mounting seat, the condenser is arranged on evaporator top, and the device for drying and filtering is arranged on condenser and economizer
Between.So, the equipment centralized arrangement of condensation evaporation unit can be installed, reduces floor space, reduce the cost of construction.
Further, the economizer is shell-and-plate economizer or shell-and-tube economizer.So, economizer cooling is increased
Device structure, improves unit refrigerating capacity, further improves unit eer.
Further, the evaporator be using ethylene glycol as refrigerating medium, operation evaporating temperature be -20 DEG C~-30 DEG C
Evaporator.
Further, the refrigeration compressor is that capacity is 7000~12000m3The refrigeration compressor of/h.So, greatly
Capacity unit eer is higher than conventional power unit.
Yet further, the oil eliminator is vertical oil separator.So, existing Horizontal oil separator is changed to stand
Formula structure, by oil eliminator cylinder, being changed to be directly installed in mounting seat, unit is reduced so as to by motor and compressor
Whole height.
Further, the vertical range between the bottom and level ground of the motor is 0.5~0.9m, the refrigeration
Vertical range between the bottom and level ground of compressor is 0.5~0.9m.So, reduce motor and the installation of compressor is high
Degree, is directly connected with mounting seat, can effectively reduce motor and refrigeration compressor vibrations, ensures stable operation of unit.
Compared with prior art, the utility model has the advantage of：
First, the utility model provides the big ethylene glycol unit of single unit refrigerating capacity, by the compressor of big capacity
Group constitutes a complete refrigeration system with the additional reservoir such as condenser, evaporator, and increases economizer structure, raising unit
Refrigerating capacity, further improves unit eer, compared to conventional power unit, solves many small capacity sets excessively, behaviour
Make the devices such as control complexity, refrigeration compressor, motor, oil eliminator, oil cooler each dispersed placement installation, troublesome maintenance,
Floor space is big, the problems such as mobile inconvenient.
Second, oil cooler of the present utility model uses thermal siphon oil cooler, water is substituted as cooling using freon
Medium, it is to avoid the problem of heat exchanger tube scale effect oil cooler heat exchange, without water pump, oil temperature is stable, reliable and cost performance
Rationally, be particularly suitable for water shortage or the poor area of water quality, can be widely used for air-conditioning, freezing, beer, chemical industry, oil, mine, water conservancy,
Freeze to wait each industry, field of food.
Third, Horizontal oil separator is changed to vertical structure by the utility model, so as to motor and compressor be separated by oil
On device cylinder, it is changed to be directly installed in mounting seat, reduces the whole height of unit；The peace of motor and compressor is reduced simultaneously
Dress height, is directly connected with mounting seat, can effectively reduce motor and compressor vibrations, ensures stable operation of unit.
Fourth, whole unit is divided into compression unit and condensation evaporation unit by the utility model so that the width of each equipment
Degree meets movement requirement with height dimension, solves the problems, such as that unit width ultra-wide can not be transported, the connection between unit two parts
Pipeline is connected using flange, by the disassembly of fastener connecting pipe such as bolt, nut, after unit and pipeline are transported into user scene
Re-assembly again, so as to reduce cost of transportation.
Brief description of the drawings
Fig. 1 is the main structure diagram that a kind of microcomputer controls thermal siphon economizer screw ethylene glycol unit；
Fig. 2 is the overlooking the structure diagram of Fig. 1；
Fig. 3 is the cross section structure diagram in Fig. 2 along A-A directions；
Wherein, motor 1, the first mounting seat 2, suction filter 3, refrigeration compressor 4, oil eliminator 5, condenser 6, steaming
Hair device 7, evaporator feed pipe group 8, the second mounting seat 9, device for drying and filtering 10, economizer 11, automatically controlled instrument box 12, thermal siphon
Oil cooler muffler 13, olein filter 14, oil blast pipe 15, oil pump 16, compressor suction duct 17, thermal siphon oil cooling are but
Device 18, oily coarse filter 19, thermal siphon oil cooler feed pipe 20.
Specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments：
It is a kind of microcomputer control thermal siphon economizer screw ethylene glycol unit of the present utility model shown in figure, including presses
Contracting unit and condensation evaporation unit, compression unit include suction filter 3, refrigeration compressor 4, oil eliminator 5, olein filter
14th, oil pump 16, thermal siphon oil cooler 18, oily coarse filter 19 and the motor 1 for driving refrigeration compressor 4, condensation are steamed
Bill unit includes condenser 6, evaporator 7, device for drying and filtering 10 and economizer 11；
The oil-gas mixture outlet of refrigeration compressor 4 is connected with the oil-gas mixture entrance of oil eliminator 5, oil eliminator 5
Refrigerant gas gas outlet be connected with the air inlet of condenser 6 by oil blast pipe 15, the first refrigerant of condenser 6 goes out
Liquid mouthful is connected by thermal siphon oil cooler feed pipe 20 with the refrigerant inlet of thermal siphon oil cooler 18, thermal siphon oil cooling
But the gas outlet of device 18 is connected by thermal siphon oil cooler muffler 13 with the gas returning port of condenser 6；
The second refrigerant liquid outlet of condenser 6 is connected with the inlet of device for drying and filtering 10, and device for drying and filtering 10 goes out
Liquid mouthful is connected with the inlet of economizer 11, and the liquid outlet of economizer 11 is by evaporator feed pipe group 8 and the feed liquor of evaporator 7
Mouth connection, the gas outlet of evaporator 7 is connected by compressor suction duct 17 with the air inlet of suction filter 3, suction filter 3
Gas outlet be connected with the gas returning port of refrigeration compressor 4；
The refrigerator oil liquid outlet of oil eliminator 5 is connected with the refrigerator oil inlet of thermal siphon oil cooler 18, hot rainbow
The liquid outlet of oil suction cooler 18 is connected with the inlet of oily coarse filter 19, and the filtrate (liquid of oily coarse filter 19 passes through oil pump
16 are connected with the inlet of olein filter 14, and the filtrate (liquid of olein filter 14 is connected with the liquid return hole of refrigeration compressor 4.
So, oil cooler is changed to thermal siphon oil cooler by the utility model unit, and water is not used as cooling medium, it is to avoid heat exchange
The problem of pipe scale effect oil cooler heat exchange, without water pump, oil temperature is stable, reliable and cost performance is reasonable, is particularly suitable for
Water shortage or the poor area of water quality；Big capacity unit eer is higher than conventional power unit, and increases economizer cooler construction, is carried
Unit refrigerating capacity high, further improves unit eer.
In above-mentioned technical proposal, compression unit also includes the first mounting seat 2, motor 1, refrigeration compressor 4, oil eliminator
5th, thermal siphon oil cooler 18 is arranged in the first mounting seat 2, and suction filter 3 is arranged on the top of refrigeration compressor 4, oil
Fine filter 14, oil pump 16, oily coarse filter 19 are arranged at the cylinder of thermal siphon oil cooler 18 top.So, can be to pressure
The equipment centralized arrangement of contracting unit is installed, and reduces floor space, reduces the cost of construction.Compression unit also includes being arranged on first
Automatically controlled instrument box 12 in mounting seat 2.So, can realize running shape to screw compressor refrigerating unit by automatically controlled control system
The automatic monitoring of condition, the automatically controlling of the course of work, failure automatic detection and when automatically processing and catastrophe failure occurring can and
When protection shut down, it is to avoid unit damage.Refrigeration compressor 4 is that capacity is 7000~12000m3The refrigeration compressor of/h, oil
It is vertical oil separator from device 5.So, existing Horizontal oil separator is changed to vertical structure, so as to motor and refrigeration be pressed
Contracting machine reduces the whole height of unit by oil eliminator cylinder, being changed to be directly installed in mounting seat.The bottom of motor 1
Vertical range between level ground is 0.5~0.9m, the vertical range between the bottom and level ground of refrigeration compressor 4
It is 0.5~0.9m.So, the setting height(from bottom) of motor 1 and refrigeration compressor 4 is reduced, is directly connected with mounting seat, can be effective
Reduce motor 1 and refrigeration compressor 4 shakes, ensure stable operation of unit.
In above-mentioned technical proposal, condensation evaporation unit also includes the second mounting seat 9, and evaporator 7, economizer 11 are respectively provided with
In the second mounting seat 9, condenser 6 is arranged on the top of evaporator 7, and device for drying and filtering 10 is arranged on condenser 6 and economizer
Between 11.Economizer 11 is shell-and-plate economizer or shell-and-tube economizer, and evaporator 7 is using ethylene glycol as refrigerating medium, transports
Row evaporating temperature is -20 DEG C~-30 DEG C of evaporator.
The course of work of the present utility model is：
During work, motor 1 drives refrigeration compressor 4 to rotate, the refrigeration of the HTHP compressed in refrigeration compressor 4
Agent gas and refrigerator oil are entered in oil eliminator 5, after being separated through oil eliminator 5, the refrigerant gas of HTHP and freezing
Machine oil is divided into two-way, i.e., be all the way the refrigerant gas of HTHP, is all the way in addition the refrigerator oil of HTHP, and high temperature is high
The refrigerant gas of pressure are condensed into refrigerant liquid through the oil blast pipe 15 on the top of oil eliminator 5 into condenser 6, condensation
Refrigerant liquid in device 6 is divided into two-way, enters thermal siphon oil cooler 18 by thermal siphon oil cooler feed pipe 20 all the way
Tube side, the heat of the outer high temperature refrigerator oil of absorption tube and explosive evaporation on the way, refrigerant liquid evaporation process Midst density by
Decrescence small, the density of the gas-liquid mixture in thermal siphon oil cooler muffler 13 is less than in thermal siphon oil cooler feed pipe 20
The density of liquid, this imbalance generates a pressure official post refrigerant and is flowed in thermal siphon oil cooler 18.Due to system
The power of cryogen flowing is the heat that the high temperature refrigerator oil in thermal siphon oil cooler 18 is provided, once refrigeration compressor 4
Out of service to cause oil circulation to stop, then the flowing of refrigerant is also automatically stopped.Gas-liquid is mixed in the tube side of thermal siphon oil cooler 18
The refrigerant of compound is returned in condenser 6 by thermal siphon oil cooler muffler 13, and liquid is cooled to again in condenser 6
Refrigerant.The device for drying and filtering 10 that high pressure refrigerant liquid passes through bottom all the way in addition of condenser 6, is carried out into economizer 11
Cool down again；Refrigerant liquid after being cooled again is evaporated refrigeration by evaporator feed pipe group 8 into evaporator 7,
By being again introduced into refrigeration compressor 4 after compressor suction duct 17, suction filter 3, complete refrigerant and control hot rainbow in microcomputer
The circulation in economizer screw ethylene glycol unit is inhaled, refrigerant constantly repeats this circulation, constantly enters in the evaporator 7
Row sweat cooling, provides the user refrigerant service；
The refrigerator oil of HTHP enters thermal siphon oil cooler 18 to oil eliminator 5 by oil eliminator 5 all the way in addition
Shell side.After by the refrigerant liquid cooling in the tube side of thermal siphon oil cooler 18, coarse filtration is carried out by oily coarse filter 19, and
It is pressurized by oil pump 16, in then returning to refrigeration compressor 4 after olein filter 14 is filtered again, is completed cold
Freeze circulation of the machine oil in microcomputer control thermal siphon economizer screw ethylene glycol unit, refrigerator oil constantly repeats this and follows
Ring, the functions such as lubrication, cooling are played in refrigeration compressor 4, it is ensured that refrigeration compressor 4 can stablize normal operation.
More than, specific embodiment only of the present utility model, it is noted that any those of ordinary skill in the art exist
In technical scope disclosed in the utility model, the change or replacement that can be readily occurred in should all be covered in guarantor of the present utility model
Within the scope of shield.
Claims (9)
1. a kind of microcomputer controls thermal siphon economizer screw ethylene glycol unit, it is characterised in that：Including compression unit and condensation
Evaporation element, the compression unit includes suction filter (3), refrigeration compressor (4), oil eliminator (5), olein filter
(14), oil pump (16), thermal siphon oil cooler (18), oily coarse filter (19) and the electricity for driving refrigeration compressor (4)
Machine (1), the condensation evaporation unit includes condenser (6), evaporator (7), device for drying and filtering (10) and economizer (11)；
The oil-gas mixture outlet of the refrigeration compressor (4) is connected with the oil-gas mixture entrance of the oil eliminator (5), institute
The refrigerant gas gas outlet for stating oil eliminator (5) is connected by oil blast pipe (15) with the air inlet of the condenser (6),
First refrigerant liquid outlet of the condenser (6) passes through thermal siphon oil cooler feed pipe (20) with the thermal siphon oil cooling but
The refrigerant inlet connection of device (18), the gas outlet of the thermal siphon oil cooler (18) passes through thermal siphon oil cooler return-air
Pipe (13) is connected with the gas returning port of the condenser (6)；
The second refrigerant liquid outlet of the condenser (6) is connected with the inlet of the device for drying and filtering (10), the drying
The liquid outlet of filter (10) is connected with the inlet of the economizer (11), and the liquid outlet of the economizer (11) is by evaporation
Device feed pipe group (8) is connected with the inlet of the evaporator (7), and the gas outlet of the evaporator (7) passes through compressor air suction
Pipe (17) is connected with the air inlet of the suction filter (3), the gas outlet of the suction filter (3) and refrigeration compressor
(4) gas returning port connection；
The refrigerator oil liquid outlet of the oil eliminator (5) connects with the refrigerator oil inlet of the thermal siphon oil cooler (18)
Connect, the liquid outlet of the thermal siphon oil cooler (18) is connected with the inlet of the oily coarse filter (19), the oily thick mistake
The filtrate (liquid of filter (19) is connected by oil pump (16) with the inlet of the olein filter (14), the olein filter
(14) filtrate (liquid is connected with the liquid return hole of the refrigeration compressor (4).
2. microcomputer according to claim 1 controls thermal siphon economizer screw ethylene glycol unit, it is characterised in that：It is described
Compression unit also includes the first mounting seat (2), the motor (1), refrigeration compressor (4), oil eliminator (5), thermal siphon oil
Cooler (18) is arranged in the first mounting seat (2), and the suction filter (3) is arranged on refrigeration compressor (4) top,
The olein filter (14), oil pump (16), oily coarse filter (19) are arranged at thermal siphon oil cooler (18) cylinder top.
3. microcomputer according to claim 2 controls thermal siphon economizer screw ethylene glycol unit, it is characterised in that：It is described
Compression unit also includes the automatically controlled instrument box (12) being arranged in the first mounting seat (2).
4. the microcomputer according to claim 1 or 2 or 3 controls thermal siphon economizer screw ethylene glycol unit, and its feature exists
In：The condensation evaporation unit also includes the second mounting seat (9), and the evaporator (7), economizer (11) are arranged at second
In mounting seat (9), the condenser (6) is arranged on evaporator (7) top, and the device for drying and filtering (10) is arranged on condenser
(6) and economizer (11) between.
5. the microcomputer according to claim 1 or 2 or 3 controls thermal siphon economizer screw ethylene glycol unit, and its feature exists
In：The economizer (11) is shell-and-plate economizer or shell-and-tube economizer.
6. the microcomputer according to claim 1 or 2 or 3 controls thermal siphon economizer screw ethylene glycol unit, and its feature exists
In：The evaporator (7) is using ethylene glycol as refrigerating medium, runs the evaporator that evaporating temperature is -20 DEG C~-30 DEG C.
7. the microcomputer according to claim 1 or 2 or 3 controls thermal siphon economizer screw ethylene glycol unit, and its feature exists
In：The refrigeration compressor (4) is that capacity is 7000~12000m3The refrigeration compressor of/h.
8. the microcomputer according to claim 1 or 2 or 3 controls thermal siphon economizer screw ethylene glycol unit, and its feature exists
In：The oil eliminator (5) is vertical oil separator.
9. the microcomputer according to claim 1 or 2 or 3 controls thermal siphon economizer screw ethylene glycol unit, and its feature exists
In：Vertical range between the bottom and level ground of the motor (1) is 0.5~0.9m, the bottom of the refrigeration compressor (4)
Vertical range between portion and level ground is 0.5~0.9m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621257815.9U CN206257825U (en) | 2016-11-23 | 2016-11-23 | Microcomputer controls thermal siphon economizer screw ethylene glycol unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621257815.9U CN206257825U (en) | 2016-11-23 | 2016-11-23 | Microcomputer controls thermal siphon economizer screw ethylene glycol unit |
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| Publication Number | Publication Date |
|---|---|
| CN206257825U true CN206257825U (en) | 2017-06-16 |
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ID=59025607
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621257815.9U Active CN206257825U (en) | 2016-11-23 | 2016-11-23 | Microcomputer controls thermal siphon economizer screw ethylene glycol unit |
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| CN (1) | CN206257825U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180545A (en) * | 2017-12-28 | 2018-06-19 | 广东美的制冷设备有限公司 | Transducer air conditioning |
| CN109442782A (en) * | 2018-09-19 | 2019-03-08 | 广州市凌静制冷设备有限公司 | A kind of screw Cool-water Machine for Industry group |
| CN109813002A (en) * | 2019-01-28 | 2019-05-28 | 南通美吉乐制冷设备有限公司 | A kind of efficient unit of built-in integral siphon column |
-
2016
- 2016-11-23 CN CN201621257815.9U patent/CN206257825U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180545A (en) * | 2017-12-28 | 2018-06-19 | 广东美的制冷设备有限公司 | Transducer air conditioning |
| CN109442782A (en) * | 2018-09-19 | 2019-03-08 | 广州市凌静制冷设备有限公司 | A kind of screw Cool-water Machine for Industry group |
| CN109813002A (en) * | 2019-01-28 | 2019-05-28 | 南通美吉乐制冷设备有限公司 | A kind of efficient unit of built-in integral siphon column |
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