CN203940664U - shell and tube evaporator - Google Patents
shell and tube evaporator Download PDFInfo
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- CN203940664U CN203940664U CN201420317079.6U CN201420317079U CN203940664U CN 203940664 U CN203940664 U CN 203940664U CN 201420317079 U CN201420317079 U CN 201420317079U CN 203940664 U CN203940664 U CN 203940664U
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Abstract
The utility model discloses shell and tube evaporator.Shell and tube evaporator comprises: an entrance, and guiding cold-producing medium enters housing section, flows to the first disk body; The first disk body, the length direction along shell and tube evaporator in housing section extends, and collects cold-producing medium and forms the first cold-producing medium pond; A plurality of the first heat-exchange tubes, each first heat-exchange tube extends on described length direction, is positioned at the top of the first disk body bottom; Heat exchange is carried out at least one first heat-exchange tube and the first cold-producing medium pond.Another kind of shell and tube evaporator comprises: entrance, and guiding cold-producing medium enters the top disk body in plural disk body arranged vertically; Described in each, disk body comprises more than one heat-exchange tube; Each disk body that is positioned at odd column, two ends in the longitudinal direction all have space, and directs refrigerant is positioned at the disk body of even column to the next one; Be positioned at each disk body of even column, the total length that development length is evaporimeter, comprises cold-producing medium discharge portion in the 3rd preset range in centre position in the longitudinal direction.The utility model can improve the efficiency that cold-producing medium and process fluid carry out heat exchange.
Description
Technical field
The utility model relates to Refrigeration Technique, in particular to shell and tube evaporator.
Background technology
Heating, heating ventilation and air-conditioning (heating, ventilation and air conditioning, HVAC) system generally include compressor, heat exchanger such as condenser and evaporimeter and expansion gear.Conventionally, under refrigeration mode, compressor can compressed refrigerant vapor.Refrigerant vapour can be directed in condenser, is condensed into liquid refrigerant.Liquid refrigerant can be directed in evaporimeter by expansion gear, thereby becomes two-phase refrigerant mixture, and has been lowered temperature.In evaporimeter, cold-producing medium can be with process fluid such as air or water carry out heat exchange.
Heat exchanger can comprise all kinds and configuration.In some HVAC systems, such as cooling device, normally used heat exchanger is shell and tube heat exchanger.Shell and tube heat exchanger has the configuration of built-in pipeline in housing conventionally.Housing section and duct portion are configured to conventionally in heat exchange relationship, and two kinds of different fluids of carrying.For example, in evaporimeter, housing section can be configured to carry cold-producing medium, and duct portion can be configured to carry process fluid such as water.Cold-producing medium can carry out heat exchange with process fluid, thus the temperature of adjusting process fluid.For the heat exchanger with the work of evaporimeter mode, normally used shell and tube heat exchanger can be downward film evaporator or flooded evaporator.
But, the evaporimeter using at present, the efficiency that its cold-producing medium and process fluid carry out heat exchange also can improve.
Utility model content
The utility model discloses shell and tube evaporator, can improve the efficiency that cold-producing medium and process fluid carry out heat exchange.
In order to achieve the above object, the technical solution of the utility model comprises:
A shell and tube evaporator, comprising: housing section, entrance, the first disk body and a plurality of the first heat-exchange tube, wherein,
Described entrance, for guiding cold-producing medium to enter described housing section, and flows to described the first disk body;
Described the first disk body, the length direction along described shell and tube evaporator in described housing section extends, and for collecting the cold-producing medium of the first disk body, forms the first cold-producing medium pond, and guiding cold-producing medium flows along the first disk body;
The first heat-exchange tube described in each extends on described length direction, is positioned at the top of described the first disk body bottom;
Wherein, heat exchange is carried out in described the first cold-producing medium pond that at least one in a plurality of described the first heat-exchange tube extending in the longitudinal direction and described the first disk body form.
Preferably, further comprise:
The second disk body extends on described length direction, in the vertical direction of shell and tube evaporator, be positioned at described the first disk body below;
Wherein, described the second disk body, for collecting the cold-producing medium flowing out from described the first disk body, forms second refrigerant pond, and guides cold-producing medium to flow along described the second disk body.
Wherein, further comprise: a plurality of the second heat-exchange tubes that extend on described length direction, are positioned at the top of described the second disk body bottom;
Wherein, heat exchange is carried out at least one in a plurality of described the second heat-exchange tube extending in the longitudinal direction and described second refrigerant pond.
Alternatively,
Described entrance is positioned at the first preset range of the first end of described shell and tube evaporator, and guiding cold-producing medium enters described the first disk body;
Or,
Described entrance is positioned at second preset range in the centre position of described shell and tube evaporator, and guiding cold-producing medium enters described the first disk body, and flows to the centre position of described the first disk body.
Preferably, further comprise: cold-producing medium distributor,
Described cold-producing medium distributor, between described entrance and described the first disk body, for receiving the cold-producing medium from described entrance, and guides described cold-producing medium to enter described the first disk body.
Preferably,
The zone line of described cold-producing medium distributor comprises: guide described cold-producing medium to enter the more than one inlet baffle of described the first disk body;
And/or,
On described cold-producing medium distributor, be further equipped with more than one protective plate, described protective plate is beveled structure and hides described the first disk body;
And/or,
On described cold-producing medium distributor, comprise an above distribution hole for circulated refrigeration agent.
Alternatively, further comprise: more than one tube sheet;
Described each tube sheet comprises groove and more than one through hole, and wherein, described the first disk body is through described groove, and described in each, through hole receives described first heat-exchange tube.
Alternatively, in the end of described the first disk body, further comprise seal;
Described seal comprises more than one closed hole, and described in each, closed hole receives described first heat-exchange tube, and the first received heat-exchange tube is carried out around sealing.
Shell and tube evaporator, comprising: entrance, and plural disk body arranged vertically in the vertical direction of described shell and tube evaporator, described in each, disk body comprises more than one heat-exchange tube, wherein,
Described entrance, for guiding cold-producing medium to enter the top disk body of described plural disk body;
In described plural disk body arranged vertically,
For each disk body that is positioned at odd column, two ends in the longitudinal direction all have space, and described space guides the refrigerant flow direction next one of this disk body that is arranged in odd column to be positioned at the disk body of even column;
For each disk body that is positioned at even column, development length is the total length of evaporimeter, and in the 3rd preset range in centre position, comprise cold-producing medium discharge portion in the longitudinal direction, described cold-producing medium discharge portion guides the refrigerant flow direction next one of this disk body that is arranged in even column to be positioned at the disk body of odd column.
Preferably, further comprise: the oil return opening that is positioned at described shell and tube evaporator housing bottom.
Visible, in the utility model, by the cold-producing medium producing in disk body on length direction, flow, can carry out better heat exchange with the process fluid that carries in the heat-exchange tube extending in the longitudinal direction, thereby improve the efficiency of heat exchange.In addition, in the utility model, on being included in the vertical direction of shell and tube evaporator during plural disk body arranged vertically, in each disk body, can form two-way system refrigerant flow, thereby can carry out better heat exchange with the process fluid that carries in the heat-exchange tube extending in the longitudinal direction, further improve the efficiency of heat exchange.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in below describing is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawing illustrated embodiments other embodiment and accompanying drawing thereof.
In each accompanying drawing, similarly mark is indicated respectively corresponding parts.
Fig. 1 is the existing schematic diagram for example, with the HVAC system of shell and tube heat exchanger (evaporimeter and condenser).
Fig. 2 A is that in the utility model embodiment 1, evaporator arrangement forms the side schematic view of the cold-producing medium stream on length direction for the housing section at evaporimeter.
Fig. 2 B is that in the utility model embodiment 1, evaporimeter is arranged to the bottom schematic view that forms the cold-producing medium stream on length direction in the housing section of evaporimeter.
Fig. 3 is that in the utility model embodiment 2, evaporimeter is arranged to the side schematic view that forms the cold-producing medium stream on length direction in the housing section of evaporimeter.
Fig. 4 is that in the utility model embodiment 2, evaporimeter is arranged to the schematic bottom view that forms the cold-producing medium stream on length direction in the housing section of evaporimeter.
Fig. 5 A is the decomposition texture schematic diagram that removes housing and heat exchanger pipeline finisher housing section in the utility model embodiment 3.
Fig. 5 B removes the schematic bottom view of heat exchanger pipeline finisher in the utility model embodiment 3
Fig. 5 C is the schematic diagram of tube sheet in the utility model embodiment 3.
Fig. 5 D is the enlarged diagram of the end of housing section shown in Fig. 5 A in the utility model embodiment 3.
Fig. 5 E is the enlarged diagram of the pars intermedia of housing section shown in Fig. 5 A in the utility model embodiment 3.
Fig. 5 F is the decomposition texture schematic diagram of cold-producing medium distributor in the utility model embodiment 3.
Fig. 5 G is the enlarged diagram of the inlet baffle of cold-producing medium distributor shown in Fig. 5 F in the utility model embodiment 3.
The specific embodiment
Shell and tube heat exchanger is often used in HVAC system, and HVAC system is such as comprising cooling device.Referring to Fig. 1, cooling device 100 comprises compressor 110, condenser 120, economizer 130, expansion gear 140 and evaporimeter 150, thereby has formed refrigerating circuit.In cooling device 100, condenser 120 and evaporimeter 150 are all respectively the heat exchangers of shell-tube type.
Evaporimeter 150 comprises housing section 151 and duct portion 152, and duct portion 152 is limited by heat-exchange tube 153.Housing section 151 is configured to receive, for example, by the expand refrigerant mixture of the gas-liquid two-phase that of expansion gear 140.Cold-producing medium can carry out heat exchange with the process fluid (such as water) that flows through the duct portion 152 of heat-exchange tube 153.
Compressor 110 need to make with lubricator conventionally.In cooling device 100, lubricant can be together with refrigerant mixed (the namely mixture of cold-producing medium and lubricant), and in peripheral passage, circulates together with cold-producing medium.Propose the configuration of various evaporimeters 150 and/or condenser 120, thereby helped to process cold-producing medium and the lubricant in cold-producing medium circulation.For the processing of cold-producing medium and lubricant, can also improve, so that for example improve the efficiency of cooling device 100 and/or the charging amount of the cold-producing medium in minimizing cooling device 100.
Embodiment of the present utility model described for example, evaporimeter at cooling device (cooling device 100) such as evaporimeter 150 in, produce system, the method and apparatus of the cold-producing medium stream on length direction, so that help to process cold-producing medium and/or the lubricant in cooling device.In certain embodiments, the housing section of evaporimeter can comprise the disk body that at least one extends in the longitudinal direction.In certain embodiments, the housing section of evaporimeter can comprise a plurality of arranged vertically disk bodies that extend in the longitudinal direction.In certain embodiments, the entrance of evaporimeter can be configured to guide cold-producing medium to enter the top disk body each disk body arranged vertically from the top of evaporimeter.Cold-producing medium can form the cold-producing medium stream on length direction in a disk body, and flows to the next disk body in each disk body arranged vertically.Then, cold-producing medium can form the cold-producing medium stream on length direction in this next one disk body.In certain embodiments, each disk body can form cold-producing medium pond, to carry out heat exchange with the fluid that flows through heat-exchange tube.By the cold-producing medium producing on length direction in each disk body, flow, can improve heat exchanger effectiveness, and the content of the lubricant in cold-producing medium stream can be concentrated in to the bottom of evaporimeter.
Term " cold-producing medium " can refer to the mixture of normally used cold-producing medium and normally used lubricant.Be understandable that, term " liquid refrigerant " typically refers to the cold-producing medium in liquid condition, and still, liquid refrigerant can comprise some cold-producing mediums in gaseous state.Term " refrigerant vapour " typically refers to the cold-producing medium in gaseous state, and still, refrigerant vapour can comprise some cold-producing mediums in liquid condition.Be understandable that, these terms are used in order to describe figure, should not be regarded as limiting the application's scope.
Fig. 2 A and Fig. 2 B show according to the side of shell and tube evaporator 200 of an embodiment and the schematic diagram of bottom surface.In order to simplify, in Fig. 2 A, omitted heat-exchange tube (heat-exchange tube 250 in Fig. 2 B).
Evaporimeter 200 comprises housing 210, and this housing 210 limits housing section 220.Housing 210 disposes refrigerant inlet 211 and refrigerant outlet 212, and refrigerant inlet 211 and refrigerant outlet 212 are positioned at the top 224 of housing 210 in vertical direction, and this vertical direction is limited by the height H of housing 210.Refrigerant inlet 211 is configured to guide cold-producing medium (liquid refrigerant normally, or, the mixture of liquids and gases cold-producing medium) to enter housing section 220.Refrigerant outlet 212 is configured to guide cold-producing medium (normally refrigerant vapour) to flow out housing section 220.
Housing section 220 can comprise a series of disk body 230.In the embodiment shown in Fig. 2 A and Fig. 2 B, a series of disk body 230 comprises arranged vertically in vertical direction 3 disk body 230a, 230b and 230c.Embodiment shown in Fig. 2 A and Fig. 2 B is just also non-limiting in order to illustrate.Be understandable that, in other embodiments, a series of disk body 230 can comprise the disk body greater or less than 3.In certain embodiments, housing section 220 can only include a disk body.
Housing 210 has length L and height H.Wherein, length L defines length direction, and height H defines vertical direction.Disk body 230a, 230b and 230c extend conventionally in the longitudinal direction, and arranged vertically in vertical direction respectively.The disk body 230a at top in the longitudinal direction, arranged vertically and the disk body 230c of bottom have respectively space 232a and 232c.Space 232a is between the two ends of disk body 230a, and space 232c is between the two ends of disk body 230c, and space 232a and space 232c are all between the first end 221 and the second end 222 of housing section 220.Space 232a is configured to allow cold-producing medium to pass through this space 232a to flow out from disk body 230a, and space 232c is configured to allow cold-producing medium to pass through this space 232c to flow out from disk body 230c.
In arranged vertically, middle disk body 230b is between disk body 230a and disk body 230c.The length that disk body 230b extends is generally the total length L of evaporimeter 210, and in the longitudinal direction, and the zone line of disk body 230b has cold-producing medium discharge portion 232b (object lesson can referring to the cold-producing medium discharge portion 532b in Fig. 5 A).Cold-producing medium discharge portion 232b is arranged to and allows cold-producing medium to flow out disk body 230b by this cold-producing medium discharge portion 232b.
Housing 210 comprises bottom 225 in vertical direction.In the longitudinal direction, the zone line of bottom 225 comprises oil return opening 215.
Refrigerant inlet 211 can be communicated with by fluid with cold-producing medium distributor 240, and cold-producing medium distributor 240 comprises inlet baffle 242.In the embodiment describing, in the longitudinal direction, inlet baffle 242 is positioned at the zone line of distributor 240.
Be understandable that, in the longitudinal direction, cold-producing medium discharge portion 232b can be positioned at along other positions of middle disk body 230b, and is positioned at first end 221 and the second end 222.In the longitudinal direction, oil return opening 215 can be positioned at along bottom other positions of 225.
Fig. 2 B shows the bottom schematic view of evaporimeter 200.As shown in the figure, disk body 230a, 230b and 230c placement arranged vertically, this is vertically limited by height H.Housing section 220 comprises a plurality of heat-exchange tubes 250.Be understandable that, heat-exchange tube 250 extends in the longitudinal direction, and this length direction is limited by the length L shown in Fig. 2 A.
Disk body 230a, 230b and 230c have respectively bottom 235a, 235b and 235c, and concave wall 237a, 237b and 237c.In the bottom schematic view shown in Fig. 2 B, disk body 230a, 230b and 230c define respectively disk space 239a, 239b and 239c (the lines region in Fig. 2 B).In the situation that fluid does not overflow concave wall 237a, 237b and 237c, disk space 239a, 239b and 239c are respectively maximum region or the capacity (end of supposing disk body 230a, 230b and 230c is closed) of disk body 230a, 230b and the 230c fluid that can hold conventionally.Disk body 230a, 230b and 230c are arranged to and in disk space 239a, 239b and 239c, hold respectively a line or the heat-exchange tube 250 of multirow more.Some heat-exchange tubes 250 be just in time positioned at bottom 235a, 235b and/or 235c above.In certain embodiments, housing section 220 also comprises a line or the heat-exchange tube 250 of multirow more, and this heat-exchange tube 250 is positioned at the bottom 225 of housing 210.In certain embodiments, the housing section outside outside disk space 239a, 239b and 239c and bottom 225 220 conventionally do not comprise through heat-exchange tube.
The line number of the heat-exchange tube 250 in each disk space 239a, 239b and 239c and the line number of the heat-exchange tube 250 on bottom 255 can change.In certain embodiments, the line number of heat-exchange tube 250 can be that 4-5 is capable or still less.Conventionally, the line number of heat-exchange tube 250 can configure according to gross tonnage or the capacity of for example evaporimeter 200.On the other hand, the line number of heat-exchange tube 250 can remain on relatively little numeral, so that reduce the charging amount of the required cold-producing medium of submergence heat-exchange tube 250.
In certain embodiments, the line number of heat-exchange tube 250 can be configured such that the speed of each disk space 239a, 239b and cold-producing medium mobile in 239c keeps respectively relative constant.Correspondingly, than the disk space close to relatively from bottom 225, the disk space from top 224 close to relatively comprises the more heat-exchange tube of multirow.For example, disk space 239a comprises the more heat-exchange tube of multirow than disk space 239c conventionally.
With reference to figure 2A and Fig. 2 B, below the operation of evaporimeter 200 is described in more detail.The arrow of evaporimeter 200 inside shown in Fig. 2 A and Fig. 2 B is indicated the flow direction of cold-producing medium conventionally.
As shown in Figure 2 A, cold-producing medium can be directed into housing section 220 by refrigerant inlet 211.In an illustrated embodiment, the position of refrigerant inlet 211 is that this length direction is limited by length L in the longitudinal direction towards the second end 222 of housing section 220.This kind of structure is preferably to configure.Refrigerant inlet 211 for example can be positioned at the first end 221 towards housing section 220, or other positions between first end 221 and the second end 222 are such as in the longitudinal direction towards the zone line of housing 210.
The cold-producing medium that is directed into housing section 220 comprises liquid refrigerant (for example liquid refrigerant in the refrigerant mixture of gas-liquid two-phase) conventionally.After entrance 211 enters housing section 220, cold-producing medium can be rebooted to the zone line of distributor 240 from entrance 211 in the longitudinal direction, and inlet baffle 242 is positioned at this zone line.
Liquid refrigerant can be directed into the disk body 230a at top arranged vertically.Liquid refrigerant can be redistributed in the longitudinal direction in the disk body 230a at top.Because first liquid refrigerant is directed into top disk body 230a mid portion in the longitudinal direction, therefore, liquid refrigerant can flow towards first end 221 and second end 222 of evaporimeter 200 subsequently, is formed on the two-way system refrigerant flow in disk space 239a.
Cold-producing medium stream in the disk body 230a of top can flow to next disk body arranged vertically from space 232a, i.e. middle disk body 230b.In middle disk body 230b, cold-producing medium stream is also two-way, respectively the mid portion of disk body 230b in the middle of first end 221 and second end 222 flow directions.Conventionally, middle disk body 230b extends to the total length L of heat exchanger 200, and, conventionally in the middle of between disk body 230b and the first end 221 of evaporimeter 200 and and the second end 222 of evaporimeter 200 between very close to each other.Disk body 230b in the middle of cold-producing medium stream can flow out by cold-producing medium discharge portion 232b from the mid portion of telophragma body 230b.Afterwards, cold-producing medium stream is directed into the next disk body in arranged vertically, i.e. bottom disk body 230c by cold-producing medium discharge portion 232b.Liquid refrigerant in disk body 230c forms two-way system refrigerant flow, flows to respectively first end 221 and second end 222 of housing section 220 from the zone line of bottom disk body 230c.Afterwards, cold-producing medium stream flows to the bottom 225 of housing 210 by space 232c.
In each disk body 230a, 230b and 230c, cold-producing medium stream is configured to form cold-producing medium pond, and this cold-producing medium pond is enough to respectively disk space 239a, the 239b of submergence and/or moistening correspondence and at least some heat-exchange tubes 250 in 239c.
Formed cold-producing medium stream in the housing section 220 of evaporimeter 200, can help to improve the efficiency of the heat exchange between the process fluid carrying in cold-producing medium in housing section 220 and heat-exchange tube 250.
Cold-producing medium stream in each disk body 230a, 230b and 230c, can help the lubricant in evaporimeter 200 to process, and this lubricant circulates together with cold-producing medium.In HVAC system, cold-producing medium can comprise lubricant.The mixture of cold-producing medium and lubricant can be in HVAC system together with circulation.Cold-producing medium stream in housing section 220 can help to reduce/prevent the surface that lubricant is attached to heat-exchange tube 250.Along with cold-producing medium stream flows along disk body 230a, 230b arranged vertically and 230c, amount of refrigerant can continue to be vaporized owing to carrying out heat exchange with heat-exchange tube 250, so, the lubricant content in cold-producing medium stream will be concentrated because of the minimizing of liquid refrigerating agent content.Therefore,, along with refrigerant flow direction bottom 225, evaporimeter 200 can help to improve the lubricant concentration in cold-producing medium stream.Lubricant concentration in cold-producing medium stream is conventionally the highest in oil return opening 215 place's concentration, and this oil return opening 215 is positioned at the mid portion of housing 210 bottoms 225.There is the relatively cold-producing medium of high lubricant concentration and can be directed out evaporimeter 200 from oil return opening 215.The flow direction corresponding to the cold-producing medium stream in housing section 220, oil return opening 215 is usually located at the mid portion of housing 210 bottoms 225, thereby the cold-producing medium stream in bottom disk body arranged vertically (being disk body 230c) can be flowed away from oil return opening 215 conventionally.Can help like this cold-producing medium stream before flowing to oil return opening 215, the long as far as possible length distance of flowing through in evaporimeter 200, thus help to improve the lubricant concentration at oil return opening 215 places.
In certain embodiments, the lubricant concentration at oil return opening 215 places can be comparable with common flooded evaporator.In certain embodiments, the lubricant concentration at oil return opening 215 places can be 4% left and right.
It should be noted that the embodiment shown in Fig. 2 A and Fig. 2 B is exemplary.Based on the utility model, a kind of method of processing cold-producing medium and/or lubricant in evaporimeter can also be proposed.The method can comprise: guiding liquids cold-producing medium enters the housing section of evaporimeter, and in the housing section of evaporimeter, forms the cold-producing medium stream of one or more length directions.The method can also comprise: collect cold-producing medium to form cold-producing medium pond, thereby carry out heat exchange with at least some heat-exchange tubes of evaporimeter.In certain embodiments, the cold-producing medium stream on a plurality of length directions can be arranged in evaporimeter arranged vertically, and the cold-producing medium stream on the plurality of length direction can be configured to flash-pot top to bottom and have the flow direction alternately.In certain embodiments, the method can comprise: the starting point at cold-producing medium stream guides cold-producing medium in relatively little region.As shown in Figure 2 A, the starting point of cold-producing medium stream can be the about mid portion at top disk body 230a.
In certain embodiments, the method for processing cold-producing medium in evaporimeter can comprise: the mid portion at evaporimeter top, guiding liquids cold-producing medium enters the housing section of evaporimeter.Cold-producing medium can be guided to the two ends of evaporimeter, thereby forms the two-way system refrigerant flow on length direction.
At some embodiment extremely, the method for processing cold-producing medium in evaporimeter can comprise: near the first end at evaporimeter top, guiding liquids cold-producing medium enters the housing section of evaporimeter.The first end that cold-producing medium can be directed to flash-pot flows to the second end, thereby forms the cold-producing medium stream on length direction.
In certain embodiments, the method for processing cold-producing medium in evaporimeter can comprise: from the first cold-producing medium stream, collect cold-producing medium, then, guiding the first cold-producing medium stream flows in the opposite direction in the longitudinal direction.
Fig. 3 shows the schematic diagram of another embodiment, and this embodiment can be configured to carry out the roughly method of processing cold-producing medium and/or lubricant, and this embodiment is included in the cold-producing medium forming on length direction in evaporimeter 300 and flows.
Evaporimeter 300 comprises housing 310, and this housing 310 defines housing section 320.Housing 310 disposes refrigerant inlet 311 and refrigerant outlet 312, and refrigerant inlet 311 and refrigerant outlet 312 are positioned at the top 324 of evaporimeter 300 in vertical direction, and this vertical direction is limited by the height H of housing 310.Housing section 320 has first end 321 and the second end 322.Refrigerant inlet 311 is put towards the second end 322.
Housing section 320 can comprise a series of disk body 330 extending in the longitudinal direction, and this length direction is limited by the length L 3 of housing 310.In the embodiment show in figure 3, a series of disk body 330 comprises vertically distinguishes arranged vertically 3 disk body 330a, 330b and 330c, and this vertical direction is limited by height H 3.Embodiment shown in Fig. 3 is just also non-limiting in order to illustrate.Be understandable that, in other embodiments, a series of disk body 330 can comprise the disk body greater or less than 3.
Each disk body 330a, 330b and 330c all have an end that is connected to first end 321 or the second end 322, and another end of each disk body 330a, 330b and 330c has respectively space 332a, 332b and 332c.Disk body 330a, 330b and 330c are connected in first end 321 and the second end 322 in arranged vertically.In an illustrated embodiment, just also non-limiting in order to illustrate, top disk body 330a and bottom disk body 330c in arranged vertically are connected to the second end 322.Middle disk body 330b is connected to first end 321.
Refrigerant inlet 311 is positioned at the end (i.e. the second end) near top disk body 330a, and this top disk body 330a is connected to the second end 322.This refrigerant inlet 311 is configured in the relatively little region towards disk body 330a end, top, and guiding liquids cold-producing medium is to top disk body 330a.
In the longitudinal direction, liquid refrigerant can be directed to along top disk body 330a and flow, thereby forms the first cold-producing medium stream.Cold-producing medium stream can flow out top disk body 330a, disk body 330b in the middle of flowing to downwards by space 332a, thus in middle disk body 330b, form second refrigerant stream.Similarly, liquid refrigerant can flow to bottom disk body 330c subsequently, thereby in the disk body 330c of bottom, forms the 3rd cold-producing medium stream
Oil return opening 315 is positioned on the bottom 325 of housing 310, near the second end 322 of housing 310.Corresponding to the flow direction of the cold-producing medium stream in housing section 320, the position of oil return opening 315, can flow away the cold-producing medium stream in bottom disk body (being disk body 330c) in the longitudinal direction conventionally.
It should be noted that Fig. 2 A, the embodiment shown in Fig. 2 B and Fig. 3 is also not used in restriction.Evaporimeter can have different configurations, to form the cold-producing medium stream of length direction.The quantity that it should be noted that the disk body in arranged vertically can change.In the above-mentioned embodiment illustrating, the quantity of disk body is 3.This is exemplary, is not intended to limit.The quantity of the disk body in arranged vertically is at least 1 conventionally.In addition, the line number of the heat-exchange tube in each disk space can change.In Fig. 2 B, the line number of heat-exchange tube is 1 or 2.This is exemplary, is not intended to limit.The line number of the heat-exchange tube in each disk space is at least 1 conventionally.In certain embodiments, the line number of heat-exchange tube can be 4-5.
In the above-mentioned embodiment illustrating, disk body is conventionally with respect to arranged vertically and extend in the longitudinal direction, and is parallel to each other.This is exemplary, is not intended to limit.In certain embodiments, each disk body can tilt with respect to vertical direction, so that for example help to form cold-producing medium stream.Each disk body also can tilt towards different directions with respect to vertical direction, thereby disk body is not parallel to each other.In certain embodiments, disk body can not be smooth.Disk body can have geometry, and this geometry helps to form the cold-producing medium stream on length direction in housing section, such as tilting or slope.For example, disk body can be configured, and makes with respect to vertical direction, and the mid portion of disk body can be higher than the end of disk body, thereby helps cold-producing medium to flow to two ends from mid portion.
The extra feature that Fig. 4 provides evaporimeter 400 to have.Evaporimeter 400 comprises housing 410, and housing 410 limits housing section 420.Top 422 with respect to the housing 410 of vertical direction can comprise refrigerant outlet 412, this vertical direction is limited by the height H 4 of housing 410, and this refrigerant outlet 412 is configured to allow cold-producing medium (being generally refrigerant vapour) to be directed out housing section 420 conventionally.As a rule, ideally, the cold-producing medium that is directed out housing section 420 by refrigerant outlet 412 comprises the least possible liquid refrigerant.
In evaporimeter 400, liquid refrigerant forms liquid cell, and the heat-exchange tube 450 in this liquid cell and a series of disk body 430 carries out heat exchange.Heat exchange between the process fluid of cold-producing medium and heat-exchange tube 450 carryings, can cause that liquid refrigerant sputters this series of disk body 430, thereby can be so that liquid refrigerant is fed into refrigerant outlet 412 by jumping.
In order to help to reduce liquid refrigerant, by jumping, sent, for example liquid refrigerant splashes, and evaporimeter 400 can be equipped with for example a pair of protective plate 470a and 470b.This can be installed on cold-producing medium distributor 440 protective plate 470a and 470b, and the position of this cold-producing medium distributor 440 is towards the top 422 of housing 410.Protective plate 470a and 470b extend (not shown in Fig. 4, can be still example referring to the length L in Fig. 2) along the length of housing 410 in the longitudinal direction.
In the vertical direction of housing 410, this vertical direction is defined by height H 4, and protective plate 470a and 470b mutually depart from the direction from top 422 to bottom 421.The protective plate 470a and the 470b that depart from are configured to form beveled structure conventionally, to hide a series of disk body 430, thereby the jumping that for example can help to reduce the liquid refrigerant causing due to liquid refrigerant splashing in these a series of disk bodies 430 is sent.
Evaporimeter 400 can also comprise choke plate 429a and 429b.Choke plate 429a and 429b extend in the longitudinal direction, to roughly contribute to block liquid cold-producing medium to enter refrigerant outlet 412.In the view of Fig. 4, choke plate 429a and 429b are roughly configured to abundant cover shell body 420, and in vertical direction, this housing section 420 is below choke plate 429a and 429b.Choke plate 429a and 429b comprise hole (not shown in Fig. 4, can be still example referring to the hole 528 in Fig. 5), to allow refrigerant vapour to pass through, and roughly block liquid cold-producing medium passes through.
Fig. 5 A to Fig. 5 G shows a kind of evaporimeter 500, and the cold-producing medium stream that this evaporimeter 500 can form on length direction in the housing 510 of evaporimeter 500 (for simplified characterization, has omitted housing 510, in Fig. 5 A to Fig. 5 G, omitted heat-exchange tube in Fig. 5 A.Housing 510 referring to Fig. 5 B).Embodiment shown in Fig. 5 A to Fig. 5 G also provides other feature, to help to process cold-producing medium and/or the lubricant in evaporimeter 500.It should be noted that in the embodiment that these other features may describe at Fig. 2 A for example, Fig. 2 B, Fig. 3 and Fig. 4 and use.In certain embodiments, the feature of these descriptions can be used together with the above evaporimeter of not describing, for example, and in other embodiments, the evaporimeter (for example, traditional downward film evaporator or flooded evaporator) that conventionally can not comprise in the longitudinal direction cold-producing medium stream.
Fig. 5 A is the exploded view of element of housing 510 inside of evaporimeter 500.In order to simplify, housing 510 and heat-exchange tube in Fig. 5 A, have been removed.Embodiment shown in Fig. 5 A is configured to form cold-producing medium as shown in arrow in Fig. 5 A stream on length direction conventionally, similar to shown in Fig. 2 A of this cold-producing medium stream.
Refrigerant inlet 511 is configured to for example by veneer 513, to form fluid with cold-producing medium distributor 540 and is communicated with.Cold-producing medium distributor 540 is configured to the hole 541 that comprises that one or more permission cold-producing mediums passes through.In an illustrated embodiment, cold-producing medium distributor 540 is also configured to comprise inlet baffle 542, and this inlet baffle 542 is configured to direct refrigerant to top disk body 530a, to form cold-producing medium stream in disk body 530a.
In an illustrated embodiment, evaporimeter 500 comprises 3 disk body 530a, 530b and 530c.This is exemplary, not for restriction.Evaporimeter 500 can be configured to comprise the disk body of or other quantity.
As shown in Figure 5 B, with respect to vertical direction from top 524 to bottom 525, settle disk body 530a, 530b and 530c, this vertical direction is limited by the height H 5 of housing 510.As shown in Figure 5A, disk body 530a, 530b and 530c extend in the longitudinal direction, and this length direction is limited by the length L 5 of evaporimeter 500.In the longitudinal direction, the length of disk body 530b in the middle of the length of top disk body 530a is less than conventionally, enters middle disk body 530b thereby make cold-producing medium can flow out top disk body 530a from the end 531a of top disk body 530a and flow down.
Middle disk body 530b comprises discharge portion 532b, and this discharge portion can be configured to allow cold-producing medium to flow out middle disk body 530b, and is directed into bottom disk body 530c by discharge portion 532b.
The shape that it should be noted that each disk body 530a, 530b and 530c can be different.The shape of disk body 530a, 530b and 530c can be determined according to the quantity of the heat-exchange tube that for example disk body 530a, 530b and 530c comprise.In an illustrated embodiment, the line number of the heat-exchange tube in disk body 530a, 530b is 2 row, and bottom disk body 530c has a line heat-exchange tube.
Evaporimeter 500 can also comprise one or more tube sheet 570, to support disk body 530a, 530b and 530c and heat-exchange tube.Fig. 5 B and Fig. 5 C show respectively front view and the three-dimensional view of tube sheet 570.Tube sheet 570 comprises groove 571a, 571b and 571c, groove 571a, and the shape of 571b and 571c allows disk body 530a, 530b and 530c to pass.Tube sheet 570 can also comprise for receiving the through hole 572 of heat-exchange tube.Through hole 572 is configured to receive a heat-exchange tube by each through hole 572 conventionally.
In order to promote to form liquid refrigerant streams, tube sheet 570 comprises one or more open area 575, and this open area 575 is configured to allow cold-producing medium relatively freely to flow through tube sheet 570.As shown in Figure 5 A, while using two or more tube sheet 570 in evaporimeter 500, open area 575, is alternately settled on width as the position of the medium line M5 of disk body 530b with respect to disk body, and this width is limited by width W 5.Developing zone 575 can allow cold-producing medium to flow the tube sheet 570 of relatively easily flowing through.Heat-exchange tube can be supported in hole 572 on a tube sheet 570, to structural support is provided.
With reference to figure 2B, each disk body 230a, 230b and 230c are configured at disk space 239a, 239b and 239c, form liquid cell respectively, so that the process fluid of carrying carries out heat exchange in heat-exchange tube 250.With reference to figure 5D, for the liquid level in the liquid refrigerant pond that helps to remain suitable in disk body 530a, 530b and/or 530c, the end of disk body, such as end 531a and end 531b, can be configured to comprise respectively seal 537a, 537b.Seal 537a, 537b can be configured to comprise closed hole 538.Sealing hole 538 receives heat-exchange tube, and can be configured to, when heat-exchange tube passes sealing hole 538, around heat-exchange tube, seal.When the liquid level in liquid refrigerant pond is during higher than the height H 8 of for example seal 537a, liquid refrigerant can flow out disk body conventionally such as disk body 530a.Like this, just can maintain disk body such as the liquid level in the suitable cold-producing medium pond in disk body 530a.
It should be noted that when not needing to use seal 537a and 537b also can reach/maintain the liquid level in required cold-producing medium pond, cannot need seal 537a and 537b.For example, in the illustrated embodiment, bottom disk body 530c is configured to only comprise a line heat-exchange tube.So, just can not need seal such as seal 537a and 537b realize the liquid level in cold-producing medium pond required in disk body 530c, thereby carry out heat exchange with this row heat-exchange tube.
As shown in Fig. 5 A and Fig. 5 E, evaporimeter 500 is configured to the zone line that guiding liquids cold-producing medium enters top disk body 530a.When being directed in the disk body 530a of top by inlet baffle 542, the speed of liquid refrigerant (or volume) is relatively high.Therefore,, when cold-producing medium is directed into top disk body 530a, some cold-producing mediums may splash.In order to help prevent cold-producing medium to splash away from the zone line of top disk body 530a, the zone line of top disk body 530a comprises lifting limit 539, and extend in the longitudinal direction on this lifting limit 539, thereby helps to stop cold-producing medium to splash.Lifting limit 539 is usually located at the side of inlet baffle 542.
In certain embodiments, such as Fig. 2 A, the embodiment shown in Fig. 2 B and Fig. 3 and evaporimeter as shown in Figure 5A 500, refrigerant outlet (not shown in Fig. 5 A) can be positioned at the top of housing.In order to help prevent/reduce liquid refrigerant to jump, deliver to refrigerant outlet, evaporimeter can also comprise the structure of barrier liquid cold-producing medium, than barrier plate 429a and 429b and/or protective plate 470a and 470b as shown in Figure 4.
As shown in Figure 5 A, evaporimeter 500 comprises one or more barrier plate 529 and protective plate 574, thereby help prevent/reduce liquid refrigerant to jump, sends refrigerant outlet to.Barrier plate 529 comprises one or more hole 528, thereby conventionally allows refrigerant vapour to pass through, and barrier liquid cold-producing medium.
Protective plate 574 is configured to form beveled structure conventionally, to hide in vertical direction disk body 530a, 530b and/or 530c, thereby help prevent/jumping that for example reduces the liquid refrigerant causing due to cold-producing medium splashing in disk body 530a, 530b and/or 530c send.
With reference to figure 5F, cold-producing medium distributor 540 is described in detail.Cold-producing medium distributor 540 is configured to guide cold-producing medium to enter for example zone line of top disk body 530a conventionally.Cold-producing medium distributor 540 can comprise one or more distribution holes 541.When cold-producing medium distributor 540 comprises a plurality of distributions hole 541, the size in each hole (or diameter) can be different.
In the embodiment illustrating and direction, by refrigerant inlet 511, from the right directs refrigerant, towards cold-producing medium distributor 540, flow.Go out as illustrated, shown in direction towards the hole 541 on the left side than thering is higher refrigerant velocities towards the hole 541 on the right.In order to help on average to distribute cold-producing medium, in certain embodiments, towards the hole 541 on the left side, can be less than the hole 541 towards the right.
High-speed cold-producing medium may damage the heat-exchange tube in the disk body 530a of top.Inlet baffle 542 can help to reduce the speed of cold-producing medium.Fig. 5 G shows the zoomed-in view of inlet baffle 542.Inlet baffle 542 comprises bottom 547, and this bottom 547 comprises one or more hole 548 to allow cold-producing medium to pass through.In the longitudinal direction, inlet baffle 542 also comprises that 2 overflow protection department 543, and this overflows protection department 543 and 547 extends upward from bottom.The height H 9 of overflowing protection department 543 can change according to the designing requirement or other requirements that for example reduce refrigerant velocities.Conventionally, height H 9 is higher, fewer from overflowing the cold-producing medium that protection department 543 overflows.By configuration, for example configure the quantity in hole 548, the size in hole 548 and/or the height H 9 of overflowing protection department 543, can control the hole 548 of flowing through cold-producing medium distribution and control the cold-producing medium overflow from overflowing protection department 543, and, can regulate the speed that flows through the cold-producing medium after inlet baffle 542.In a specific embodiment, for example, from overflowing the quantity of the cold-producing medium that protection department 543 overflows, be approximately the 30-40% of the cold-producing medium total amount that is directed into inlet baffle 542.It should be noted that this relative quantity of overflowing cold-producing medium is exemplary.Inlet baffle 542 is by being designed to reduce the speed of cold-producing medium, thereby prevents that cold-producing medium from damaging heat-exchange tube.
Than existing downward film evaporator or flooded evaporator, the disclosed embodiments can help to reduce the total quantity of the required heat-exchange tube of evaporimeter.Therefore, the disclosed embodiments can help to reduce the cost of manufacturing evaporimeter.The disclosed embodiments can also help from evaporimeter oil return.The disclosed embodiments can help to reduce the change of performance, and put forward high performance predictable and reliability.Than existing flooded evaporator, can reduce the refrigerant charge to evaporimeter.
It should be noted that in following 1-7 any one can with 8-20 in any one merge.Any one in 8-12 can with 13-20 in any one merge.The 13rd aspect can with 14-20 in any one merge.
1, the method for processing the cold-producing medium in evaporimeter, comprising:
Guiding liquids cold-producing medium enters the housing section of evaporimeter;
Collect liquid refrigerant, and guiding liquids cold-producing medium is towards the length direction of evaporimeter, to form the first length direction cold-producing medium stream; And
Form cold-producing medium pond, to carry out heat exchange with the heat-exchange tube of evaporimeter.
2, the method based on above-mentioned aspect 1, wherein, the processing that guiding liquids cold-producing medium enters evaporator shell body is that the surrounding at evaporimeter top carries out.
3, the method based on above-mentioned aspect 1-2, wherein, the processing that the surrounding's guiding liquids cold-producing medium at evaporimeter top enters evaporator shell body is to carry out in evaporimeter crown center surrounding partly.
4, the method based on above-mentioned aspect 1-3, wherein, guiding liquids cold-producing medium comprises to form the first length direction cold-producing medium stream towards the length direction of evaporimeter: guiding liquids cold-producing medium is towards the two ends of evaporimeter, to form the two-way system refrigerant flow towards evaporimeter two ends on length direction.
5, the method based on above-mentioned aspect 1-2, wherein, the processing that the surrounding's guiding liquids cold-producing medium at evaporimeter top enters evaporator shell body is around to carry out at the first end of evaporimeter.
6, the method based on above-mentioned aspect 1-5, wherein, guiding liquids cold-producing medium comprises to form the cold-producing medium stream of length direction towards the length direction of evaporimeter: guiding liquids cold-producing medium is towards the second end of evaporimeter, to form the first end of flash-pot towards the cold-producing medium stream of the length direction of the second end.
7, the method based on above-mentioned aspect 1, further comprises:
From the first cold-producing medium stream, collect cold-producing medium; And
The cold-producing medium that guiding is collected from the first cold-producing medium stream in the longitudinal direction in the opposite direction.
8, shell and tube evaporator, comprising:
Housing section; Entrance, is configured to guide cold-producing medium to enter housing section;
The first disk body, the length direction along evaporimeter in described housing section extends, and for collecting the cold-producing medium of the first disk body, and forms the first cold-producing medium pond, and guiding cold-producing medium flows along the first disk body;
A plurality of the first heat-exchange tubes that extend in the longitudinal direction, are positioned at the top of the first disk body bottom;
Wherein, the first cold-producing medium pond be configured to a plurality of the first heat-exchange tubes that extend in the longitudinal direction at least one carry out heat exchange.
9, the shell and tube evaporator based on above-mentioned aspect 8, further comprises:
The second disk body, extends in the longitudinal direction, in the vertical direction of evaporimeter, be positioned at the first disk body below;
Wherein, the second disk body is configured to collect the cold-producing medium flowing out from the first disk body, to form second refrigerant pond, and guides cold-producing medium to flow along the second disk body.
10, the shell and tube evaporator based on above-mentioned aspect 8-9, further comprises:
A plurality of the second heat-exchange tubes that extend in the longitudinal direction, are positioned at the top of the second disk body bottom; Wherein, second refrigerant pond be arranged to a plurality of the second heat-exchange tubes that extend in the longitudinal direction at least one carry out heat exchange.
11, the shell and tube evaporator based on above-mentioned aspect 8, wherein, entrance is positioned near the first end of evaporimeter, and this entrance is configured to guide near the position of cold-producing medium evaporimeter first end to enter the first disk body.
12, the shell and tube evaporator based on above-mentioned aspect 8, wherein, entrance is positioned near the mid portion of evaporimeter, and this entrance is configured to guide cold-producing medium to enter the first disk body, to the centre position of the first disk body.
13, shell and tube evaporator, comprising:
Housing section;
Entrance, is configured to guide cold-producing medium to enter housing section;
The first disk body extends on the length direction of evaporimeter, and this first disk body defines disk space;
A plurality of the first heat-exchange tubes that extend in the longitudinal direction, are arranged in disk space;
Wherein, disk space is configured to collect by the cold-producing medium that entrance guided, and guides cold-producing medium along the first disk body, to flow in disk space; And, at least one in a plurality of the first heat-exchange tubes that extend be in the longitudinal direction configured to disk space in the cold-producing medium collected carry out heat exchange.
14, the method for processing lubricant in evaporimeter, comprising:
The housing section that the mixture of guiding cold-producing medium and lubricant enters evaporimeter;
Collect the mixture of cold-producing medium and lubricant, and the mixture of guiding cold-producing medium and lubricant is towards the length direction of evaporimeter, to form the first length direction cold-producing medium and mix lubricant logistics;
Form cold-producing medium and lubricant mixture pond, with the heat-exchange tube with evaporimeter, carry out heat exchange, thereby along with flowing of the cold-producing medium in the first length direction cold-producing medium and mix lubricant logistics and lubricant mixture, evaporate the amount of refrigerant in this cold-producing medium and lubricant mixture; And
In the bottom of evaporimeter, collect the mixture of cold-producing medium and lubricant.
15, the method based on above-mentioned aspect 14, wherein, the processing that the mixture of guiding cold-producing medium and lubricant enters evaporator shell body is in surrounding's execution at evaporimeter top.
16, the method based on above-mentioned aspect 14-15, wherein, the processing that the surrounding at evaporimeter top guides the mixture of cold-producing medium and lubricant to enter evaporator shell body is to carry out in evaporimeter crown center surrounding partly.
17, the method based on above-mentioned aspect 14-16, wherein, guiding cold-producing medium comprises with the logistics that mixes of lubricant to form the first length direction cold-producing medium towards the length direction of evaporimeter with the mixture of lubricant: the mixture of guiding cold-producing medium and lubricant is towards the two ends of evaporimeter, to form the logistics that mixes of two-way system cryogen with lubricant towards evaporimeter two ends on length direction.
18, the method based on above-mentioned aspect 14-15, wherein, the processing that the surrounding at evaporimeter top guides the mixture of cold-producing medium and lubricant to enter evaporator shell body is around to carry out at the first end of evaporimeter.
19, the method based on above-mentioned aspect 14-18, wherein, the mixture of guiding cold-producing medium and lubricant comprises with the logistics that mixes of lubricant to form the cold-producing medium of length direction towards the length direction of evaporimeter: guide the mixture of cold-producing medium and lubricant towards the second end of evaporimeter, so that the first end of formation flash-pot is towards the logistics that mixes of cold-producing medium with the lubricant of the length direction of the second end.
20, the method based on above-mentioned aspect 14, further comprises:
The mixture of collecting cold-producing medium and lubricant logistics that mixes from the first cold-producing medium with lubricant; And
Guiding from the cold-producing medium collected logistics the first cold-producing medium and mixing of lubricant in the longitudinal direction in the opposite direction.
The various embodiment that the utility model provides combination mutually in any way as required, the technical scheme obtaining by this combination, also in scope of the present utility model.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model.Like this, if of the present utility model these are revised and within modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model also comprises these changes and modification interior.
Claims (10)
1. shell and tube evaporator, is characterized in that, comprising: housing section, entrance, the first disk body and a plurality of the first heat-exchange tube, wherein,
Described entrance, for guiding cold-producing medium to enter described housing section, and flows to described the first disk body;
Described the first disk body, the length direction along described shell and tube evaporator in described housing section extends, and for collecting the cold-producing medium of the first disk body, forms the first cold-producing medium pond, and guiding cold-producing medium flows along the first disk body;
The first heat-exchange tube described in each extends on described length direction, is positioned at the top of described the first disk body bottom;
Wherein, heat exchange is carried out in described the first cold-producing medium pond that at least one in a plurality of described the first heat-exchange tube extending in the longitudinal direction and described the first disk body form.
2. shell and tube evaporator according to claim 1, is characterized in that, further comprises:
The second disk body extends on described length direction, in the vertical direction of shell and tube evaporator, be positioned at described the first disk body below;
Wherein, described the second disk body, for collecting the cold-producing medium flowing out from described the first disk body, forms second refrigerant pond, and guides cold-producing medium to flow along described the second disk body.
3. shell and tube evaporator according to claim 2, is characterized in that, further comprises: a plurality of the second heat-exchange tubes that extend on described length direction, are positioned at the top of described the second disk body bottom;
Wherein, heat exchange is carried out at least one in a plurality of described the second heat-exchange tube extending in the longitudinal direction and described second refrigerant pond.
4. shell and tube evaporator according to claim 1, is characterized in that,
Described entrance is positioned at the first preset range of the first end of described shell and tube evaporator, and guiding cold-producing medium enters described the first disk body;
Or,
Described entrance is positioned at second preset range in the centre position of described shell and tube evaporator, and guiding cold-producing medium enters described the first disk body, and flows to the centre position of described the first disk body.
5. shell and tube evaporator according to claim 1, is characterized in that, further comprises: cold-producing medium distributor,
Described cold-producing medium distributor, between described entrance and described the first disk body, for receiving the cold-producing medium from described entrance, and guides described cold-producing medium to enter described the first disk body.
6. shell and tube evaporator according to claim 5, is characterized in that,
The zone line of described cold-producing medium distributor comprises: guide described cold-producing medium to enter the more than one inlet baffle of described the first disk body;
And/or,
On described cold-producing medium distributor, be further equipped with more than one protective plate, described protective plate is beveled structure and hides described the first disk body;
And/or,
On described cold-producing medium distributor, comprise an above distribution hole for circulated refrigeration agent.
7. shell and tube evaporator according to claim 1, is characterized in that, further comprises: more than one tube sheet;
Described each tube sheet comprises groove and more than one through hole, and wherein, described the first disk body is through described groove, and described in each, through hole receives described first heat-exchange tube.
8. shell and tube evaporator according to claim 1, is characterized in that, in the end of described the first disk body, further comprises seal;
Described seal comprises more than one closed hole, and described in each, closed hole receives described first heat-exchange tube, and the first received heat-exchange tube is carried out around sealing.
9. shell and tube evaporator, is characterized in that, comprising: entrance, and plural disk body arranged vertically in the vertical direction of described shell and tube evaporator, described in each, disk body comprises more than one heat-exchange tube, wherein,
Described entrance, for guiding cold-producing medium to enter the top disk body of described plural disk body;
In described plural disk body arranged vertically,
For each disk body that is positioned at odd column, two ends in the longitudinal direction all have space, and described space guides the refrigerant flow direction next one of this disk body that is arranged in odd column to be positioned at the disk body of even column;
For each disk body that is positioned at even column, development length is the total length of evaporimeter, and in the 3rd preset range in centre position, comprise cold-producing medium discharge portion in the longitudinal direction, described cold-producing medium discharge portion guides the refrigerant flow direction next one of this disk body that is arranged in even column to be positioned at the disk body of odd column.
10. shell and tube evaporator according to claim 9, is characterized in that, further comprises: the oil return opening that is positioned at described shell and tube evaporator housing bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420317079.6U CN203940664U (en) | 2013-06-13 | 2014-06-13 | shell and tube evaporator |
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| Application Number | Priority Date | Filing Date | Title |
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| WOPCT/CN2013/077152 | 2013-06-13 | ||
| PCT/CN2013/077152 WO2014198031A1 (en) | 2013-06-13 | 2013-06-13 | Methods and systems of streaming refrigerant in a heat exchanger |
| CN201420317079.6U CN203940664U (en) | 2013-06-13 | 2014-06-13 | shell and tube evaporator |
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| CN203940664U true CN203940664U (en) | 2014-11-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841405A (en) * | 2015-01-16 | 2016-08-10 | 浙江盾安机电科技有限公司 | Evaporator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841405A (en) * | 2015-01-16 | 2016-08-10 | 浙江盾安机电科技有限公司 | Evaporator |
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