CN104296560B - A kind of twin-stage Full-falling-film evaporator - Google Patents
A kind of twin-stage Full-falling-film evaporator Download PDFInfo
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- CN104296560B CN104296560B CN201410525257.9A CN201410525257A CN104296560B CN 104296560 B CN104296560 B CN 104296560B CN 201410525257 A CN201410525257 A CN 201410525257A CN 104296560 B CN104296560 B CN 104296560B
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- 239000011552 falling film Substances 0.000 title claims abstract description 15
- 239000003507 refrigerant Substances 0.000 claims abstract description 32
- 239000007921 spray Substances 0.000 claims abstract description 20
- 210000003205 muscle Anatomy 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims description 24
- 230000008676 import Effects 0.000 claims description 13
- 239000011148 porous material Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 239000010408 film Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 12
- 239000010687 lubricating oil Substances 0.000 description 7
- 238000005057 refrigeration Methods 0.000 description 7
- 238000004378 air conditioning Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000004941 influx Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a kind of twin-stage Full-falling-film evaporator, comprise housing, the first tube sheet be connected respectively with housing two ends, the second tube sheet, described first tube sheet is connected with the first end cap, described second tube sheet is connected with the second end cap, described second end cap is arranged in the prominent part of refrigerating medium discharge connection and refrigerating medium entrance sleeve and is divided into upper and lower both sides by the second cover internal muscle; Described housing is cylindric, hull outside upper end is provided with refrigerant outlet adapter, lower end is provided with delivery valve seat, upper semi-circle cavity in housing is provided with the first evaporimeter, lower half circle cavity in housing is provided with the second evaporimeter, between the first evaporimeter and the second evaporimeter, be provided with oil baffle.The present invention adopts two-way feed flow, and in same housing, realize twin-stage spray, and heat exchanger tube subregion is arranged, thus under the prerequisite not increasing heat exchanger tube quantity, make the heat transfer efficiency of the downward film evaporator of larger heat exchange amount obviously promote, and energy conservation and consumption reduction effects is obvious.
Description
Technical field
The present invention relates to refrigeration, field of air conditioning, more specifically, relate to a kind of twin-stage Full-falling-film evaporator.
Background technology
At present, in refrigeration, field of air conditioning, the refrigeration host computer in Large Central Air Conditioning System and freezing and refrigeration place generally adopts dry pipe shell type evaporimeter as main heat transmission equipment, because dry evaporator has lower cost relative to flooded evaporator, and the refrigerating unit structure of employing dry evaporator is succinct, control is simple, so dry evaporator is widely used.But along with society to energy-conserving and environment-protective require more and more higher, the Energy Efficiency Ratio how promoting refrigeration host computer then becomes particularly important, and how the heat exchange efficiency of evaporimeter directly decides the Energy Efficiency Ratio of refrigeration host computer, but the Some features of dry evaporator self causes the lifting of its heat transfer efficiency to be restricted, cause and cannot adopt dry pipe shell type evaporimeter a lot of to the occasion that Energy Efficiency Ratio has higher requirements, become and adopt flooded evaporator.But adopt full-liquid type oil return control system comparatively complicated, and comparatively dry evaporator refrigerant charge increase greatly.Although flooded evaporator heat exchange efficiency comparatively conventional dry evaporimeter wants high, can obtain lower heat transfer temperature difference, there is the problems such as fault rate is high, cost is high, refrigerant charge is large in it.There is again a kind of downward film evaporator now, be different from full-liquid type bottom feed flow, downward film evaporator generally adopts built-in knockout to be sprayed heat exchanger tube from evaporator shell internal upper part by refrigerant liquid downwards, refrigerating medium in refrigerant liquid and pipe constantly carries out heat exchange, manage outer liquid refrigerant and constantly flash to gaseous refrigerant, knockout is continuous again to be added on heat exchanger tube by liquid refrigerant, makes heat exchanger tube surface have a membranaceous layer all the time.The mixture of still some liquid refrigerant be not evaporated and lubricating oil bottom downward film evaporator, also a part of heat exchanger tube will be arranged in this part liquid refrigerant, liquid refrigerant is made to continue evaporation, so in existing downward film evaporator bottom still some full-liquid type heat exchange area, not high-fall film evaporating state in whole evaporimeter.And for the larger downward film evaporator of heat exchange amount, stringing row is more, the cold-producing medium that the heat exchanger tube on top is outside upper does not evaporate, new liquid refrigerant supplements up again, constantly can there is liquid refrigerant and can not drip on the heat exchanger tube of bottom by the lubricating oil that falls of evaporimeter, if stringing row is more, the liquid film on the heat exchanger tube of bottom and oil film can be thicker, thus affect the heat exchange efficiency of bottom heat exchanger tube.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, improves heat utilization efficiency, realizes economize energy, the invention provides a kind of twin-stage Full-falling-film evaporator.
Technical scheme: twin-stage Full-falling-film evaporator of the present invention, comprise housing, the first tube sheet be connected respectively with housing two ends, the second tube sheet, described first tube sheet is connected with the first end cap, described second tube sheet is connected with the second end cap, described second end cap is arranged in the prominent part of refrigerating medium discharge connection and refrigerating medium entrance sleeve, in the middle part of the second end cap inner chamber, is provided with muscle, refrigerating medium discharge connection and refrigerating medium entrance sleeve are divided into upper and lower both sides; Described housing is cylindric, and hull outside upper end is provided with refrigerant outlet adapter, lower end is provided with delivery valve seat, and the upper semi-circle cavity in housing is provided with the first evaporimeter, lower half circle cavity in housing is provided with the second evaporimeter; Described first evaporimeter comprises first order knockout, on the downside of described first order knockout by being fixedly installed on the first gripper shoe on housing, the second gripper shoe supports, fixed head by two ends on the upside of first order knockout is fixed on case inside, the import of first order knockout is connected with cold-producing medium first entrance sleeve of hull outside upper end, and the bottom of first order knockout is provided with spray apertures, sprays refrigerant liquid by spray apertures to the heat exchanger tube be positioned on the downside of first order knockout; Described second evaporimeter comprises second level knockout, on the downside of the knockout of the described second level by being fixedly installed on the 3rd gripper shoe on housing, the 4th gripper shoe supports, fixed head by two ends on the upside of the knockout of the second level is fixed on case inside, the import of second level knockout is connected with the feed liquor bend pipe at middle part in housing, feed liquor bend pipe is connected with cold-producing medium second entrance sleeve at the outer middle part of housing, and the bottom of second level knockout is provided with spray apertures, sprays refrigerant liquid by spray apertures to the heat exchanger tube be positioned on the downside of the knockout of the second level; Heat exchanger tube on the downside of described first order knockout, second level knockout is communicated with between described first tube sheet, the second tube sheet, and in the heat exchanger tube on the downside of the heat exchanger tube of refrigerating medium according to this in described refrigerating medium entrance sleeve, the second end cap on the downside of the lower lumen of muscle, second level knockout, first end cover cavity, first order knockout, the second end cap, the top inner chamber of muscle, refrigerating medium discharge connection flow out; The bottom of described first gripper shoe, the second gripper shoe is provided with grooved breach, and for support block oiled-plate method, oil baffle is positioned on the downside of the heat exchanger tube of described first order knockout, and oil baffle is grooved pallet, is provided with oil leakaging port at bending part.
Secondary feed flow, secondary spray system that the present invention adopts first order knockout, second level knockout etc. to form, and separated by oil baffle between secondary spray, prevent the lubricating oil flowed down from first evaporator from affecting the heat exchange efficiency of heat exchanger tube on the downside of the knockout of the second level, obviously promote relative to traditional knockout heat exchange efficiency.
First order knockout, second level knockout adopt upper and lower fixing, and fixed effect is better, ensure that heat transfer process is stablized.
Being further defined to of technical solution of the present invention, described first gripper shoe, the second gripper shoe are respectively equipped with symmetrical tie rod hole, by the first pull bar through tie rod hole, described first gripper shoe, the second gripper shoe are fixed into an entirety and are weldingly fixed in described inner walls; Described 3rd gripper shoe, the 4th gripper shoe are respectively equipped with symmetrical tie rod hole, by the second pull bar through tie rod hole, described 3rd gripper shoe, the 4th gripper shoe are fixed into an entirety and are weldingly fixed in described inner walls.By duplex pull rod welding by the fixed form of gripper shoe, make whole device more stable.
The import of described first order knockout is once connected in portion with the pipe box that is threaded, and pipe box one top that is threaded is provided with internal thread, is connected with described cold-producing medium first entrance sleeve by screw thread; The knockout import of the described second level is connected with one end of described feed liquor bend pipe, the other end of feed liquor bend pipe is connected with the one end of the pipe box two that is threaded, the other end of pipe box two of being threaded is provided with internal thread, is connected with described cold-producing medium second entrance sleeve by screw thread.The pipe box one that is threaded mainly is convenient to the installation of first order knockout, just cannot be installed in housing if external refrigerant first entrance sleeve and the import of internal Ll knockout are an entirety, increasing the pipe box one that is threaded facilitates external refrigerant first entrance sleeve from the hole that hull outside is held successfully in advance, be screwed into adapter in housing, and after screwin, external refrigerant first entrance sleeve carries out with the place of body contact welding to be sealed at the gap place of perforate again.In like manner, installing the pipe box two that is threaded is installations for the ease of second level knockout.
The outer both sides, upper end of described housing are provided with maintenance valve seat and emergency valve seat.
Described first order knockout and knockout inside, the described second level are equipped with two chamber allocation space.Two chamber allocation space, promote heat transfer effect greatly, improve heat exchange efficiency.
Described first gripper shoe, the second gripper shoe, the 3rd gripper shoe, the 4th gripper shoe are equipped with the pore corresponding with described first tube sheet, the second tube sheet; Heat exchanger tube on the downside of described first order knockout is also connected with described first tube sheet, the second tube sheet by expanded joint or welding manner through the pore of described first gripper shoe, the second gripper shoe, the first tube sheet, the second tube sheet, and after connecting, the heat exchanger tube of described first order knockout is communicated with the inner chamber in the middle part of described first end cover cavity and described second end cap on the upside of muscle; The heat exchanger tube of described second level knockout through described 3rd gripper shoe, the 4th gripper shoe, the first tube sheet, the second tube sheet pore and is connected with described first tube sheet, the second tube sheet by expanded joint or welding manner, the heat exchanger tube of connection rear second level knockout is communicated with the inner chamber in the middle part of described first end cover cavity and described second end cap on the downside of muscle.After such setting, the refrigerating medium discharge connection that heat exchanger tube is projecting on described second end cap and refrigerating medium entrance sleeve are combined, and just form the flowing space of refrigerating medium; Refrigerating medium entrance sleeve is located on the downside of the second end cap, refrigerating medium discharge connection is located on the upside of the second end cap, refrigerating medium enters into the second end cap from refrigerating medium entrance sleeve, heat exchanger tube again on the downside of the knockout of the second level enters in the first end cap, muscle is not had in first end cap, refrigerating medium is rushed to top from the bottom of the first end cap, and the heat exchanger tube then entered on the downside of first order knockout reaches the second end cap top, then flows out from refrigerating medium discharge connection.
Described first tube sheet and described first end cap are bolted, and are provided with the first sealing gasket between described first end cap and described first tube sheet, and the described first end portion of covering is provided with first emptying valve seat, bottom is provided with first row water valve seat; Described second tube sheet and described second end cap are bolted to connection, and are provided with the second sealing gasket between described second tube sheet and described second end cap, and described second end cap top is provided with second emptying valve seat, bottom is provided with second row water valve seat.Ensure the sealing effectiveness of whole device by arranging sealing gasket, both sides are equipped with emptying valve seat, drain valve seat, convenient maintenance.
Beneficial effect: compared with prior art, advantage of the present invention: twin-stage Full-falling-film evaporator provided by the invention, be provided with first order knockout, second level knockout, adopt two-way feed flow, and in same housing, realize twin-stage spray, heat exchanger tube subregion is arranged, middle apron oiled-plate method guarantees the heat exchanger tube high efficient heat exchanging on the downside of the knockout of the second level, thus under the prerequisite not increasing heat exchanger tube quantity, make the heat transfer efficiency of the downward film evaporator of larger heat exchange amount obviously promote, the heat transfer temperature difference of refrigerant side and refrigerating medium side is obviously reduced, refrigeration system operational efficiency of the present invention is used obviously to promote, energy conservation and consumption reduction effects is obvious.First order knockout, the upper and lower side of second level knockout are equipped with fixture, and fixed effect is better.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 be along A-A shown in Fig. 1 to sectional view.
Fig. 3 be along B shown in Fig. 1 to side view.
Detailed description of the invention
Below by accompanying drawing, technical solution of the present invention is described in detail, but protection scope of the present invention is not limited to described embodiment.
embodiment 1:twin-stage Full-falling-film evaporator as shown in accompanying drawing 1 to Fig. 3, comprise: the first end cap 1, first emptying valve seat 2, first tube sheet 3, fixed head 4, maintenance valve seat 5, first order knockout 6, cold-producing medium first discharge connection 7, first pull bar 8, housing 9, heat exchanger tube 10, be threaded pipe box 1, cold-producing medium first entrance sleeve 12, emergency valve seat 13, second tube sheet 15, second emptying valve seat 16, second end cap 17, refrigerating medium discharge connection 18, refrigerating medium entrance sleeve 19, second row water valve seat 20, second sealing gasket 21, feed liquor bend pipe 23, first gripper shoe 24, 3rd gripper shoe 25, delivery valve seat 26, second pull bar 27, 4th gripper shoe 28, second gripper shoe 29, second level knockout 30, oil baffle 31, first sealing gasket 33, first row water valve seat 34, hole for hoist 35, tie rod hole 36, be threaded pipe box 2 37, cold-producing medium second entrance sleeve 38, pore 39, muscle 40.
Housing 9 two ends are fixedly connected with the first tube sheet 3, second tube sheet 15 respectively, and the first tube sheet 3 is connected with the first end cap 1, the second tube sheet 15 is connected with the second end cap 17.Housing 9 outer upper is provided with cold-producing medium first discharge connection 7, cold-producing medium first entrance sleeve 12, maintenance valve seat 5, emergency valve seat 13, and housing 9 outer lower portion is provided with delivery valve seat 26, and the outer middle side part of housing 9 is provided with cold-producing medium second entrance sleeve 38.The first gripper shoe 24, second gripper shoe 29 is provided with at housing 9 internal upper part, first gripper shoe 24, second gripper shoe 29 is respectively equipped with two symmetrical tie rod holes 36, and tie rod hole 36 in the first gripper shoe is corresponding with the tie rod hole 36 in the second gripper shoe 29, is fixed into an entirety and is weldingly fixed on housing 9 inwall through the first pull bar 8 of the first gripper shoe 24, second gripper shoe 29 pull-up rod aperture 36 by two simultaneously; Be provided with first order knockout 6 on the top of the first gripper shoe 24 and the second gripper shoe 29 and supported by the first gripper shoe 24 and the second gripper shoe 29; First order knockout 6 upper end is welded on inside housing 9 by the fixed head 4 at two ends, makes it firmly be fixed in housing 9; First order knockout 6 import is provided with the pipe box 1 that is threaded, pipe box 1 bottom that is threaded is connected with first order knockout 6 import, pipe box 1 top that is threaded is provided with internal thread, be threaded connection with cold-producing medium first entrance sleeve 12 bottom, first order knockout 6 inside is provided with two chamber allocation space, first order knockout 6 bottommost is spray apertures, and the heat exchanger tube 10 on the downside of first order knockout 6 sprays refrigerant liquid; Bottom inside housing 9 is provided with the 3rd gripper shoe 25, the 4th gripper shoe 28,3rd gripper shoe 25, the 4th gripper shoe 28 are respectively equipped with two symmetrical tie rod holes 36, and tie rod hole 36 in the 3rd gripper shoe 25 is corresponding with the tie rod hole 36 in the 4th gripper shoe 28, is fixed into an entirety and is weldingly fixed on housing 9 inwall through the second pull bar 27 of the 3rd gripper shoe 25, the 4th gripper shoe 28 pull-up rod aperture 36 by two simultaneously; Be provided with second level knockout 30 on the top of the 3rd gripper shoe 25, the 4th gripper shoe 28 and supported by the 3rd gripper shoe 25, the 4th gripper shoe 28; On the upside of second level knockout 30, two ends are provided with fixed head 4, are welded on inside housing 9 by fixed head 4, make it firmly be fixed in housing 9; Second level knockout 30 import is provided with feed liquor bend pipe 23, one end of feed liquor bend pipe 23 is connected with second level knockout 30 import, the other end of feed liquor bend pipe 23 is connected with pipe box 2 37 one end that is threaded, pipe box 2 37 other end that is threaded is provided with internal thread, is threaded connection with cold-producing medium second entrance sleeve 38.The bottom of the first gripper shoe 24 and the second gripper shoe 29 is provided with grooved breach, for support block oiled-plate method 31, oil baffle 31 is a grooved pallet, oil leakaging port is provided with at bending part, be convenient to lubricating oil instills bottom housing 9 outside heat exchanger tube 10 on the downside of second level knockout 30, and lubricating oil flows out from the delivery valve seat 26 of housing bottom.
First gripper shoe 24, second gripper shoe 29, the 3rd gripper shoe 25, the 4th gripper shoe 28 are equipped with the pore 39 corresponding with the first tube sheet 3, second tube sheet 15, and the heat exchanger tube 10 on the downside of first order knockout 6 is communicated with the inner chamber of the first end cap 1 and the second end cap 17 with the pore 39 in the first gripper shoe 24, second gripper shoe 29 through the first tube sheet 3, second tube sheet 15.Heat exchanger tube on the downside of second level knockout 30 10 makes the inner space of the first end cap 1 and the second end cap 17 through the pore 39 in the first tube sheet 3, second tube sheet 15 and the 3rd gripper shoe 25, the 4th gripper shoe 28.Heat exchanger tube 10 two ends on the downside of first order knockout 6, second level knockout 30 adopt expanded joint or welding manner to be connected with the first tube sheet 3, second tube sheet 15.
First end cap 1 edge is provided with the bolt hole corresponding with the first tube sheet 3, by bolt, the first end cap 1 and the first tube sheet 3 are assembled together, the first sealing gasket 33 is provided with between first end cap 1 and the first tube sheet 3, first end cap 1 top is provided with first emptying valve seat 2, first end cap 1 bottom and is provided with first row water valve seat 34; Second end cap 17 edge is provided with the bolt hole corresponding with the second tube sheet 15, by bolt, the second end cap 17 and the second tube sheet 15 are assembled together, the second sealing gasket 21 is provided with between second end cap 17 and the second tube sheet 15, second end cap 17 top is provided with second emptying valve seat 16, second end cap 17 bottom is provided with second row water valve seat 20, the upper and lower both sides of muscle be provided with in the middle part of second end cap 17 for muscle 40, second end cap 17 every journey are respectively equipped with refrigerating medium discharge connection 18 and refrigerating medium entrance sleeve 19.
First two jiaos, tube sheet 3, second tube sheet 15 upper end is respectively equipped with hole for hoist 35, facilitates the movement of whole device.
The course of work of the present invention is: cold-producing medium second entrance sleeve 38 of refrigerant liquid in the middle part of cold-producing medium first entrance sleeve 12 and housing 9 on housing 9 top is by first order knockout 6, second level knockout 30 sprays on heat exchanger tube 10 downwards, refrigerating medium is by refrigerating medium entrance sleeve 19, in second end cap 17, the top inner chamber of muscle 40 enters into the heat exchanger tube 10 on the downside of second level knockout 30, again through the inner chamber of the first end cap 1, influx top from the bottom of the first end cap 1 and enter into heat exchanger tube 10 on the downside of first order knockout 6, refrigerating medium in refrigerant liquid and heat exchanger tube 10 constantly carries out heat exchange, the outer liquid refrigerant of heat exchanger tube 10 constantly flashes to gaseous refrigerant and discharges from the refrigerant outlet adapter 7 on housing 9 top, first order knockout 6, second level knockout 30 is continuous again to be added to liquid refrigerant on heat exchanger tube 10, heat exchanger tube 10 surface is made to have a membranaceous layer all the time.The mixture heat exchange of the liquid refrigerant that a part is not evaporated by the bottom of the heat exchanger tube 10 on the downside of first order knockout 6 and lubricating oil, liquid refrigerant is made to continue evaporation, lubricating oil is flowed down by the oil leakaging port of oil baffle 31 bending part and flows into the bottom of housing 9, flows out from delivery valve seat 26.Top inner chamber, the refrigerating medium discharge connection 18 of the muscle 40 in the heat exchanger tube 10 in the heat exchanger tube 10 of refrigerating medium according to this in refrigerating medium entrance sleeve 19, second end cap 17 on the downside of the lower lumen of muscle 40, second level knockout 30, on the downside of the first end cap 1 inner chamber, first order knockout 6, in the second end cap 17 flow out.The present invention adopts two-way feed flow, and twin-stage sprays, and heat exchanger tube 10 subregion is arranged, heat exchanger tube 10 high efficient heat exchanging on the downside of second level knockout 30 guaranteed by oil baffle 31, achieves the efficient heat transfer of larger heat exchange amount under the prerequisite not increasing heat exchanger tube 10 quantity.
As mentioned above, although represented with reference to specific preferred embodiment and described the present invention, it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention prerequisite not departing from claims definition, various change can be made in the form and details to it.
Claims (7)
1. a twin-stage Full-falling-film evaporator, comprise housing, the first tube sheet be connected respectively with housing two ends, the second tube sheet, it is characterized in that: described first tube sheet is connected with the first end cap, described second tube sheet is connected with the second end cap, described second end cap is arranged in the prominent part of refrigerating medium discharge connection and refrigerating medium entrance sleeve, in the middle part of the second end cap inner chamber, is provided with muscle, refrigerating medium discharge connection and refrigerating medium entrance sleeve are divided into upper and lower both sides; Described housing is cylindric, and hull outside upper end is provided with refrigerant outlet adapter, lower end is provided with delivery valve seat, and the upper semi-circle cavity in housing is provided with the first evaporimeter, lower half circle cavity in housing is provided with the second evaporimeter; Described first evaporimeter comprises first order knockout, on the downside of described first order knockout by being fixedly installed on the first gripper shoe on housing, the second gripper shoe supports, fixed head by two ends on the upside of first order knockout is fixed on case inside, the import of first order knockout is connected with cold-producing medium first entrance sleeve of hull outside upper end, and the bottom of first order knockout is provided with spray apertures, sprays refrigerant liquid by spray apertures to the heat exchanger tube be positioned on the downside of first order knockout; Described second evaporimeter comprises second level knockout, on the downside of the knockout of the described second level by being fixedly installed on the 3rd gripper shoe on housing, the 4th gripper shoe supports, fixed head by two ends on the upside of the knockout of the second level is fixed on case inside, the import of second level knockout is connected with the feed liquor bend pipe at middle part in housing, feed liquor bend pipe is connected with cold-producing medium second entrance sleeve at the outer middle part of housing, and the bottom of second level knockout is provided with spray apertures, sprays refrigerant liquid by spray apertures to the heat exchanger tube be positioned on the downside of the knockout of the second level; Heat exchanger tube on the downside of described first order knockout, second level knockout is communicated with between described first tube sheet, the second tube sheet, and in the heat exchanger tube on the downside of the heat exchanger tube of refrigerating medium according to this in described refrigerating medium entrance sleeve, the second end cap on the downside of the lower lumen of muscle, second level knockout, first end cover cavity, first order knockout, the second end cap, the top inner chamber of muscle, refrigerating medium discharge connection flow out; The bottom of described first gripper shoe, the second gripper shoe is provided with grooved breach, and for support block oiled-plate method, oil baffle is positioned on the downside of the heat exchanger tube of described first order knockout, and oil baffle is grooved pallet, is provided with oil leakaging port at bending part.
2. twin-stage Full-falling-film evaporator according to claim 1, it is characterized in that: described first gripper shoe, the second gripper shoe are respectively equipped with symmetrical tie rod hole, by the first pull bar through tie rod hole, described first gripper shoe, the second gripper shoe are fixed into an entirety and are weldingly fixed in described inner walls; Described 3rd gripper shoe, the 4th gripper shoe are respectively equipped with symmetrical tie rod hole, by the second pull bar through tie rod hole, described 3rd gripper shoe, the 4th gripper shoe are fixed into an entirety and are weldingly fixed in described inner walls.
3. twin-stage Full-falling-film evaporator according to claim 1, it is characterized in that: the import of described first order knockout is once connected in portion with the pipe box that is threaded, pipe box one top that is threaded is provided with internal thread, is connected with described cold-producing medium first entrance sleeve by screw thread; The knockout import of the described second level is connected with one end of described feed liquor bend pipe, the other end of feed liquor bend pipe is connected with the one end of the pipe box two that is threaded, the other end of pipe box two of being threaded is provided with internal thread, is connected with described cold-producing medium second entrance sleeve by screw thread.
4. twin-stage Full-falling-film evaporator according to claim 1, is characterized in that: the outer upper end of described housing is provided with maintenance valve seat and emergency valve seat.
5. twin-stage Full-falling-film evaporator according to claim 1, is characterized in that: described first order knockout and knockout inside, the described second level are equipped with two chamber allocation space.
6. twin-stage Full-falling-film evaporator according to claim 1, is characterized in that: described first gripper shoe, the second gripper shoe, the 3rd gripper shoe, the 4th gripper shoe are equipped with the pore corresponding with described first tube sheet, the second tube sheet; Heat exchanger tube on the downside of described first order knockout is also connected with described first tube sheet, the second tube sheet by expanded joint or welding manner through the pore of described first gripper shoe, the second gripper shoe, the first tube sheet, the second tube sheet, and after connecting, the heat exchanger tube of described first order knockout is communicated with the inner chamber in the middle part of described first end cover cavity and described second end cap on the upside of muscle; The heat exchanger tube of described second level knockout through described 3rd gripper shoe, the 4th gripper shoe, the first tube sheet, the second tube sheet pore and is connected with described first tube sheet, the second tube sheet by expanded joint or welding manner, the heat exchanger tube of connection rear second level knockout is communicated with the inner chamber in the middle part of described first end cover cavity and described second end cap on the downside of muscle.
7. twin-stage Full-falling-film evaporator according to claim 1, it is characterized in that: described first tube sheet and described first end cap are bolted, be provided with the first sealing gasket between described first end cap and described first tube sheet, the described first end portion of covering is provided with first emptying valve seat, bottom is provided with first row water valve seat; Described second tube sheet and described second end cap are bolted to connection, and are provided with the second sealing gasket between described second tube sheet and described second end cap, and described second end cap top is provided with second emptying valve seat, bottom is provided with second row water valve seat.
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| CN201410525257.9A CN104296560B (en) | 2014-10-08 | 2014-10-08 | A kind of twin-stage Full-falling-film evaporator |
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| CN201410525257.9A CN104296560B (en) | 2014-10-08 | 2014-10-08 | A kind of twin-stage Full-falling-film evaporator |
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| CN104296560B true CN104296560B (en) | 2015-12-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104676934B (en) * | 2015-03-10 | 2017-04-12 | 南京冷德节能科技有限公司 | Double-stage falling film screw rod cold water/heat pump unit |
| CN105135755A (en) * | 2015-08-17 | 2015-12-09 | 南京冷德节能科技有限公司 | Spraying type evaporator |
| WO2019071415A1 (en) * | 2017-10-10 | 2019-04-18 | York (Wuxi) Air Conditioning And Refrigeration Co., Ltd. | Systems and methods for falling film evaporator tubesheets |
| CN110906780A (en) * | 2018-09-18 | 2020-03-24 | 浙江盾安热工科技有限公司 | Knockout and have its shell and tube heat exchanger |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5839294A (en) * | 1996-11-19 | 1998-11-24 | Carrier Corporation | Chiller with hybrid falling film evaporator |
| CN100427870C (en) * | 2006-06-30 | 2008-10-22 | 华南理工大学 | Multi-phase flow unsaturated in-tube evaporation direct cooling device |
| CN201181171Y (en) * | 2008-03-19 | 2009-01-14 | 李铁铸 | Heat exchanger of spraying evaporation type air cooling equipment |
| CN203379622U (en) * | 2013-06-19 | 2014-01-08 | 上海神农机械有限公司 | Three-overflow distributor applied to falling-film evaporator |
| CN203771819U (en) * | 2013-12-24 | 2014-08-13 | 重庆通用工业(集团)有限责任公司 | Refrigerant circulating device for falling film evaporator |
| CN203771812U (en) * | 2014-03-18 | 2014-08-13 | 山东格瑞德集团有限公司 | Liquid distributor for air conditioning unit falling film evaporator |
| CN204084961U (en) * | 2014-10-08 | 2015-01-07 | 南京冷德节能科技有限公司 | A kind of twin-stage Full-falling-film evaporator |
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2014
- 2014-10-08 CN CN201410525257.9A patent/CN104296560B/en active Active
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| CN104296560A (en) | 2015-01-21 |
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