CN205933788U - Heat transfer system of solid state fermentation acetic acid fermentation jar - Google Patents
Heat transfer system of solid state fermentation acetic acid fermentation jar Download PDFInfo
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- CN205933788U CN205933788U CN201620931906.XU CN201620931906U CN205933788U CN 205933788 U CN205933788 U CN 205933788U CN 201620931906 U CN201620931906 U CN 201620931906U CN 205933788 U CN205933788 U CN 205933788U
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Abstract
The utility model provides a heat transfer system of solid state fermentation acetic acid fermentation jar relates to acetic acid fermentation technical field. This heat transfer system of solid state fermentation acetic acid fermentation jar is including winding the rotatory acetic acid fermentation jar of its axis, trading heat -insulating material, rotary joint, inlet tube and outlet pipe. The utility model discloses a heat transfer system trade heat -insulating material can setting up in the rotatory acetic acid fermentation jar in its axle center, should trade heat -insulating material and connect inlet tube and outlet pipe respectively, utilizes the inlet tube to introduce cooling water or hot water in the heat -insulating material to trading to reach the heat transfer effect, the outlet pipe then carry out with the material heat exchange after water. The inlet tube passes through rotary joint with the outlet pipe and is connected on the acetic acid fermentation jar that can rotate. The utility model provides a heat transfer system of solid state fermentation acetic acid fermentation jar simple structure, preparation low cost, it is low to have solved heat transfer system of solid state fermentation acetic acid fermentation jar heat exchange efficiency, and air pollution is serious, and the production rate is low, and the rate of recovery is little, the many scheduling problems of resource consumption.
Description
Technical field
The utility model is related to make vinegar technical field, more particularly, to a kind of heat-exchange system of solid state fermentation acetotor.
Background technology
Vinegar brewing method is divided into liquid fermentation method and solid state fermentation two big class, and wherein solid state fermentation is that China is only
Have.Most of solid state fermentations with cereal or potato class, wheat bran, rice husk and water as raw material, in suitable temperature and ventilation, oxygen supply
Under control condition, make multiple-microorganism and enzyme symbiosis, propagation, metabolism, growth and decline, enzymolysis in material, by the starch in raw material
It is converted into the composition in vinegar with breaks down proteins.In solid ferment process, can suitable product temperature controls be to smoothly complete
One of key factor of sweat.When initial product temperature of fermenting is too low or fermentation animated period material heat production product temperature raises, need
In time material is heated or cooled, so that product temperature is controlled in suitable scope.
In the market, the vinegar unstrained spirits heat exchange made in vinegar is changed using being passed through substantial amounts of air and carry out surface exchange mostly
Heat, but this mode still suffers from following technological deficiency：
1. heat exchange efficiency is low, and air pollution is serious.Heat capacity of air amount is low, particularly high temperature, damp and hot weather when air energy
The heat that the heat enough taken away distributes not as good as vinegar unstrained spirits；Take away part volatile materials during substantial amounts of air output simultaneously, cause
Air pollution, has also increased the corrosion to factory building or equipment.
2. low production efficiency, and the rate of recovery is little.Though increase air flow can improve heat transfer effect, also accelerate vinegar simultaneously
The volatilization of water, alcohol and acetic acid in unstrained spirits, makes yield reduce further；Large quantity of air can take away more volatile materials simultaneously,
Low to the rate of recovery of the volatile ingredients such as alcohol and acetic acid.
3. resource consumption is many.In order to cool down vinegar unstrained spirits, it is the demand of acetic acid that the air capacity being passed through is more than alcohol oxidation in vinegar unstrained spirits
Amount, therefore increased load and the power consumption of blower fan.
Utility model content
The purpose of this utility model is to provide a kind of heat-exchange system of solid state fermentation acetotor, to solve in prior art
Solid state fermentation acetotor heat-exchange system heat exchange efficiency low, air pollution is serious, makes production rate low, the rate of recovery simultaneously
Little, the problems such as resource consumption is big.
To achieve these goals, the utility model employs the following technical solutions：
A kind of heat-exchange system of solid state fermentation acetotor that the utility model provides, including the wine that can rotate about the axis thereof
Vinegar tank, heat exchanging piece, swivel joint, water inlet pipe and outlet pipe；Described heat exchanging piece is arranged on the inwall of described acetotor, and passes through water
Pipe is sequentially connected；Described swivel joint is connected to described acetotor left end cap；Described water inlet pipe and described outlet pipe pass through respectively
Described swivel joint connects described heat exchanging piece.
Further, also include cooling tower；Described cooling tower is arranged at the outside of described acetotor, and connects described water inlet pipe
With described outlet pipe.The having technical effect that of this technical scheme：The water being carried out after cold and hot exchange with material is delivered to by outlet pipe
Cooling tower, is passed through cold air from the blower fan being arranged in cooling tower to cooling tower, the water that chilling temperature raises, so that profit again
With.
Further, also include heat exchange water pump；Described heat exchange water pump is connected to described outlet pipe and described cooling tower, and
Outside positioned at described acetotor.The having technical effect that of this technical scheme：On the one hand, heat exchange water pump provides for circulation waterway
Driving force.On the other hand, heat exchange water pump is connected with cooling tower, is enough fed directly to heat exchange by the water energy after cooling tower cooler
In water pump, the purpose that in heat-exchange system, heat exchange agent recycles is realized with this, reduces the wasting of resources.
Further, also include heat exchange circulation water pot；Described heat exchange circulation water pot is arranged at described cooling tower and described
Between heat exchange water pump, and connect described cooling tower and described heat exchange water pump respectively.The having technical effect that of this technical scheme：
On the one hand, it is arranged at the heat exchange circulation water pot storage water between cooling tower and heat exchange water pump, provide pressure for heat exchange water pump
Power source is so that heat exchange water pump being capable of normal work.On the other hand, the water of cooled tower cooler is fed directly to heat exchange circulation
Water pot is deposited, and saves water resource.
Further, also include steam inlet pipe；Described steam inlet pipe connects described heat exchange circulation water pot, in order to for institute
State heat exchange circulation water pot conveying thermal source.The having technical effect that of this technical scheme：Steam inlet pipe connects heat exchange circulation water
Tank, is water pot conveying vapours, the water in heating jug.
Further, described heat exchanging piece is the hollow water pipes that multiple cross sections are isosceles triangle.The technology of this technical scheme
Effect is：On the one hand, cross section is that the hot water or cold water flowing through provides necessity for the hollow water pipe of isosceles triangle as passage
Heat exchange area.On the other hand, cross section can make material mix as the flight of acetotor for the hollow water pipe of isosceles triangle
Close uniformly.
Further, connected by water pipe between adjacent two described hollow water pipes.The having technical effect that of this technical scheme：
By the water pipe between hollow water pipe, multiple hollow water pipes are sequentially connected, form a circulation line, reach heat-exchange system
Heat exchange purpose.
Further, multiple backing plates are also included；Multiple described backing plates are arranged at the inwall of described acetotor；Described hollow water pipe
It is fixed in described acetotor by described backing plate.The having technical effect that of this technical scheme：On the one hand, backing plate makes hollow water
Form the gap of a strip, it is to avoid formed at this position when leaching vinegar liquid and retain the dead of vinegar liquid between pipe and tank skin
Angle.On the other hand, backing plate also functions to the effect of reinforcement, improves and causes tank body and hollow water pipe shape and size because of welding stress
Change.
Further, also include thermometer；Described thermometer is arranged at the inwall of described acetotor.The technology of this technical scheme
Effect is：Operating personnel can determine the temperature in acetotor by the number of degrees of observation thermometer, and then determines when to carry out
When heat exchange, stop heat exchange.
Further, described temperature is calculated as bimetallic thermometer.The having technical effect that of this technical scheme：Bimetallic thermometer
Live displays temperature, intuitive and convenient, and safe and reliable, long service life.
The beneficial effects of the utility model are：Heat exchanging piece, this heat exchange can be set in the acetotor of its axle center rotation
Part connects water inlet pipe and outlet pipe respectively, introduces cooling water or hot water using water inlet pipe into heat exchanging piece, to reach heat transfer effect,
And outlet pipe then transfers out and the water after material heat exchange.Water inlet pipe and outlet pipe are connected to by swivel joint and can rotate
On acetotor.Whole heat-exchange system structure is simple, and cost of manufacture is cheap, improves the heat exchange efficiency of acetotor, and reduce right
Air, the pollution of environment；Use water as heat transferring medium simultaneously, improve the productivity ratio of product, and then improve to alcohol, vinegar
The rate of recovery of the escaping gases such as acid；And when carrying out heat exchange using cooling water, the equipment being related to is few, reduces to resource
Consume.
Brief description
In order to be illustrated more clearly that the utility model specific embodiment or technical scheme of the prior art, below will be right
In specific embodiment or description of the prior art, the accompanying drawing of required use is briefly described.It should be evident that describing below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
The front view of the heat-exchange system of the solid state fermentation acetotor that Fig. 1 provides for the utility model；
The side view of the heat-exchange system of the solid state fermentation acetotor that Fig. 2 provides for the utility model；
The process chart of the heat-exchange system of the solid state fermentation acetotor that Fig. 3 provides for the utility model.
Reference：
10- acetotor；20- swivel joint；30- cooling tower；
40- heat exchange water pump；50- heat exchange circulation water pot；
The hollow water pipe of 60-；
101- left end cap；
201- water inlet pipe；202- outlet pipe；
501- steam inlet pipe；
601- backing plate.
Specific embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is clearly and completely described it is clear that described
Embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on the embodiment in the utility model, this
The every other embodiment that field those of ordinary skill is obtained under the premise of not making creative work, broadly falls into this practicality
Novel protected scope.
In description of the present utility model, " " center ", " on ", D score, "left", "right", " perpendicular it should be noted that term
Directly ", the orientation of instruction such as " level ", " interior ", " outward " or position relationship are based on orientation shown in the drawings or position relationship, are only
For the ease of description the utility model with simplify description, rather than instruction or the hint device of indication or element must have specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or hint relative importance.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " being connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly
Connect；Can be to be mechanically connected or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning in the utility model for the language.
Present embodiments provide a kind of heat-exchange system of solid state fermentation acetotor, wherein：Fig. 1 provides for the utility model
The front view of the heat-exchange system of solid state fermentation acetotor；The heat exchange system of the solid state fermentation acetotor that Fig. 2 provides for the utility model
The side view of system；The process chart of the heat-exchange system of the solid state fermentation acetotor that Fig. 3 provides for the utility model.As Fig. 1～3
Shown, acetotor 10 that the primary structure of the heat-exchange system of solid state fermentation acetotor includes rotating about the axis thereof, heat exchanging piece,
Swivel joint 20, water inlet pipe 201 and outlet pipe 202.Specifically, heat exchanging piece is arranged on the inwall of acetotor 10, and passes through water pipe
It is sequentially connected；Swivel joint 20 is connected to acetotor 10 left end cap 101；Water inlet pipe 201 and outlet pipe 202 are connect by rotation respectively
20 connection heat exchanging piece.
In the prior art, generally heat transfer effect is reached using cold air, to be passed through into acetotor in a large number using blower fan
Cold air, material with cold air directly contact, thus completing heat exchange.But, heat capacity of air amount is low, particularly high temperature, damp and hot
The heat that the heat that during weather, air can be taken away distributes far away from vinegar unstrained spirits；And substantial amounts of air output can take away part volatilization
Property material, causes air pollution, has also increased the corrosion to factory building or equipment.Meanwhile, though increase air flow can improve heat exchange
Effect, but also accelerate the volatilization of water, alcohol and acetic acid in vinegar unstrained spirits, so that yield is reduced further.Again, large quantity of air is taken away relatively
Many volatile materials are low to the rate of recovery of the volatile ingredients such as alcohol and acetic acid.In addition, in order to cool down vinegar unstrained spirits, the sky being passed through
It is the demand of acetic acid that tolerance is more than alcohol oxidation in vinegar unstrained spirits, therefore increased load and the power consumption of blower fan, and then increased
The consumption of resource.
The heat-exchange system of the solid state fermentation acetotor in the present embodiment, can set in the acetotor 10 of its axle center rotation
Displacement warmware, this heat exchanging piece connects water inlet pipe 201 and outlet pipe 202 respectively, introduces cooling using water inlet pipe 201 into heat exchanging piece
Water or hot water, to reach heat transfer effect, and outlet pipe 202 then transfers out and the water after material heat exchange.Water inlet pipe 201 and water outlet
Pipe 202 is connected on the acetotor 10 that can rotate by swivel joint 20 it is achieved that acetotor 10 rotates during heat exchange, and intakes
Pipe 201 effect static with outlet pipe 202.This during heat exchange, acetotor 10 persistently rotates the material so that in tank
It is fully contacted with heat exchanging piece, heat transfer effect is good, heat transfer rate is high.And cooling water or hot water are contained in an airtight system and follow
Circulation moves, and with material in tank without directly contact, therefore decreases the air pollution being passed through large quantity of air and causing, to factory building or equipment
Corrosion, also increase production rate and the rate of recovery of volatile ingredient simultaneously.
In the alternative of the present embodiment, as shown in Figures 1 to 3, further, also include cooling tower 30；Cooling tower 30
It is arranged at the outside of acetotor 10, and connect water inlet pipe 201 and outlet pipe 202.Specifically, cooling tower 30 is to use water as circulating
Cooling agent, absorbs heat dissipation in air, to reduce the device of water temperature from a system.Its cooling principle is using water and sky
Carry out cold and hot exchange after flow of air contact and produce steam, steam volatilization is taken away heat and realized evaporative heat loss, convection heat transfer' heat-transfer by convection and radiation
Heat transfer etc..In the present embodiment, carry out the water after cold and hot exchange with thermal material and cooling tower 30 is delivered to by outlet pipe 202, by setting
The blower fan being placed in cooling tower 30 is passed through cold air to cooling tower 30, and the water that chilling temperature raises, to reuse.
In the alternative of the present embodiment, as shown in Figures 1 to 3, further, also include heat exchange water pump 40；Heat is handed over
Water-change pump 40 is connected to outlet pipe 202 and cooling tower 30, and is located at the outside of acetotor 10.Specifically, water pump be a kind of in order to
Increase liquid or gas pressure, be allowed to the machinery of transport flow.In the present embodiment, on the one hand, heat exchange water pump 40 is circulation
Water route provides driving force.On the other hand, heat exchange water pump 40 is connected with cooling tower 30, and the water energy after being cooled down by cooling tower 30 is enough straight
Connect and be delivered in heat exchange water pump 40, the purpose that in heat-exchange system, heat exchange agent recycles is realized with this, reduces the wasting of resources.
In the alternative of the present embodiment, as shown in Figures 1 to 3, further, also include heat exchange circulation water pot 50；
Heat exchange circulation water pot 50 is arranged between cooling tower 30 and heat exchange water pump 40, and connects cooling tower 30 and heat exchange water respectively
Pump 40.Specifically, heat exchange circulation water pot 50 is as the container of storage water.In the present embodiment, on the one hand, be arranged at cooling tower
Heat exchange circulation water pot 50 storage water between 30 and heat exchange water pump 40, the pressure source as heat exchange water pump 40 is so that warm
Exchanging water pump 40 being capable of normal work.On the other hand, the water of cooled tower 30 cooling is fed directly to heat exchange circulation water pot 50
Deposit, save water resource.
In the alternative of the present embodiment, as shown in Figures 1 to 3, further, also include steam inlet pipe 501；Steam
Inlet tube 501 connects heat exchange circulation water pot 50, in order to provide thermal source for heat exchange circulation water pot 50.In the present embodiment, steam
Vapor inlet pipe 501 connects heat exchange circulation water pot 50, the water in heating jug.Because this heat-exchange system not only can be acetotor
10 offer low-temperature receivers, and thermal source can be provided by this heat-exchange system for acetotor 10.For example, when winter making vinegar, initially
Vinegar unstrained spirits temperature is too low, causes fermentation period to extend, and reduces wine vinegar efficiency.So arranging one on heat exchange circulation water pot 50
Steam inlet pipe 501, by the water in vapours heating tank.Water after heating passes through heat exchange water pump 40 and water inlet pipe 201 again
It is delivered in heat exchanging piece, temperature of charge can be made to increase, accelerate fermentation with material in heating tank.
In the alternative of the present embodiment, as shown in Figures 1 to 3, further, heat exchanging piece is isosceles for multiple cross sections
The hollow water pipe 60 of triangle.Specifically, the base of isosceles triangle connects the tank skin of acetotor 10, and drift angle is horizontal along acetotor 10
The radial direction in section.In the present embodiment, on the one hand, cross section is the hollow water pipe 60 of isosceles triangle is stream as passage
The hot water or cold water of warp provides necessary heat exchange area.On the other hand, cross section can be made for the hollow water pipe 60 of isosceles triangle
For the flight of acetotor 10, during acetotor 10 rotation, the hollow water pipe 60 as flight can turn vinegar unstrained spirits, makes thing
Material mixes.
In the alternative of the present embodiment, as shown in Figures 1 to 3, further, between adjacent two hollow water pipes 60
Connected by water pipe.Specifically, water inlet pipe 201 connects first hollow water pipe left side, and its right side arranges an outlet conduit,
This outlet conduit other end connects the right side of second hollow water pipe, as the inlet channel of second hollow water pipe；This
In one outlet conduit of setting, this outlet conduit other end connects the left end of the 3rd hollow water pipe for two hollow water pipe left sides
Face, as the inlet channel of this hollow water pipe；The like, become S-shaped to connect.In the present embodiment, by hollow water pipe 60 it
Between water pipe multiple hollow water pipes 60 are sequentially connected, formed a smooth pipeline, reach the heat exchange purpose of heat-exchange system.
In the alternative of the present embodiment, as shown in Figures 1 to 3, further, multiple backing plates 601 are also included；Multiple pads
Plate 601 is arranged at the inwall of acetotor 10；Hollow water pipe 60 is fixed in acetotor 10 by backing plate 601.Specifically, backing plate
601 tank skins being welded in acetotor 10, cross section is that the minor face of the hollow water pipe 60 of isosceles triangle is welded on backing plate 601.
The width of backing plate 601 is welded in the width of backing plate 601 one side less than hollow water pipe 60.In the present embodiment, on the one hand, backing plate
601 make to form the gaps of a strip between hollow water pipe 60 and tank skin, it is to avoid shape at this position when leaching vinegar liquid
Become to retain the dead angle of vinegar liquid.On the other hand, backing plate 601 also functions to the effect of reinforcement, improves acetotor 10 and hollow water pipe 60
Because welding stress causes the change of tank body and hollow water pipe 60 shape and size.
In the alternative of the present embodiment, as shown in Figures 1 to 3, further, also include thermometer；Thermometer is arranged
Inwall in acetotor 10.In the present embodiment, operating personnel can be determined in acetotor 10 by observing the number of degrees of thermometer
Temperature, and then determine when to carry out heat exchange, when stop heat exchange.
In the alternative of the present embodiment, as shown in Figures 1 to 3, further, temperature is calculated as bimetallic thermometer.Tool
Body, tank skin is welded with threaded connector, thermometer temperature sensing part is threaded connection and stretches in tank, revolves with acetotor 10
Turn, dial plate is stayed outside tank, in order to observe temperature.In the present embodiment, the main element of bimetallic thermometer is two kinds of a use
Or various metals piece overlaps together the multilayered metal film of composition, using two kinds of different metals, when temperature changes, degrees of expansion is not
Same principle work, based on around supporting annular forniciform bimetal leaf composition, during the expanded by heating of one end, drives pointer to rotate,
Work instrument just shows the temperature value corresponding to thermoelectrical potential..Bimetallic thermometer scene displays temperature, intuitive and convenient, and pacify
Entirely reliable, long service life.
Finally it should be noted that：Various embodiments above is only in order to illustrating the technical solution of the utility model, rather than it is limited
System；Although being described in detail to the utility model with reference to foregoing embodiments, those of ordinary skill in the art should
Understand：It still can be modified to the technical scheme described in foregoing embodiments, or to wherein some or all of
Technical characteristic carries out equivalent；And these modifications or replacement, do not make the essence of appropriate technical solution depart from this practicality new
The scope of type each embodiment technical scheme.
Claims (10)
1. a kind of heat-exchange system of solid state fermentation acetotor it is characterised in that include can rotate about the axis thereof acetotor, change
Warmware, swivel joint, water inlet pipe and outlet pipe；
Described heat exchanging piece is arranged on the inwall of described acetotor, and is sequentially connected by water pipe；Described swivel joint is connected to institute
State acetotor left end cap；Described water inlet pipe and described outlet pipe connect described heat exchanging piece by described swivel joint respectively.
2. the heat-exchange system of solid state fermentation acetotor according to claim 1 is it is characterised in that also include cooling tower；
Described cooling tower is arranged at the outside of described acetotor, and connects described water inlet pipe and described outlet pipe.
3. the heat-exchange system of solid state fermentation acetotor according to claim 2 is it is characterised in that also include heat exchange water
Pump；
Described heat exchange water pump is connected to described outlet pipe and described cooling tower, and is located at the outside of described acetotor.
4. the heat-exchange system of solid state fermentation acetotor according to claim 3 is it is characterised in that also include heat exchange circulation
Water pot；
Described heat exchange circulation water pot is arranged between described cooling tower and described heat exchange water pump, and connects described cooling respectively
Tower and described heat exchange water pump.
5. the heat-exchange system of solid state fermentation acetotor according to claim 4 is it is characterised in that also include steam inlet
Pipe；
Described steam inlet pipe connects described heat exchange circulation water pot, in order to provide thermal source for described heat exchange circulation water pot.
6. the heat-exchange system of solid state fermentation acetotor according to claim 1 is it is characterised in that described heat exchanging piece is multiple
Cross section is the hollow water pipe of isosceles triangle.
7. the heat-exchange system of solid state fermentation acetotor according to claim 6 is it is characterised in that adjacent two described skies
Connected by water pipe between edema with the heart involved pipe.
8. the heat-exchange system of solid state fermentation acetotor according to claim 6 is it is characterised in that also include multiple backing plates；
Multiple described backing plates are arranged at the inwall of described acetotor；Described hollow water pipe is fixed on described wine vinegar by described backing plate
In tank.
9. the heat-exchange system of the solid state fermentation acetotor according to any one of claim 1～8 is it is characterised in that also include
Thermometer；Described thermometer is arranged at the inwall of described acetotor.
10. solid state fermentation acetotor according to claim 9 heat-exchange system it is characterised in that described temperature be calculated as double
Metallic thermometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620931906.XU CN205933788U (en) | 2016-08-24 | 2016-08-24 | Heat transfer system of solid state fermentation acetic acid fermentation jar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620931906.XU CN205933788U (en) | 2016-08-24 | 2016-08-24 | Heat transfer system of solid state fermentation acetic acid fermentation jar |
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| Publication Number | Publication Date |
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| CN205933788U true CN205933788U (en) | 2017-02-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108707530A (en) * | 2018-05-31 | 2018-10-26 | 泉州中翔生物技术有限公司 | Vinegar solid-state quick fermentation technology |
-
2016
- 2016-08-24 CN CN201620931906.XU patent/CN205933788U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108707530A (en) * | 2018-05-31 | 2018-10-26 | 泉州中翔生物技术有限公司 | Vinegar solid-state quick fermentation technology |
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Effective date of registration: 20180913 Address after: 072650 6 Huai Mao Road, Dingxing County, Baoding, Hebei Patentee after: Baoding Huai Mao Food Technology Co., Ltd. Address before: 050200 Xishan garden, Luquan, Shijiazhuang, Hebei Patentee before: Zhang Lin |