• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A suction duct (30) is disposed within a tubular heat exchanger (10) and is disposed relatively high and above the tube bundle (14) so as not to cause splashing to the top. The suction duct is configured with an arranged zone (32) in fluid communication with a flow passage (38) within the suction duct. The flow passage is in fluid communication with an outlet (24) of the enclosure (12). This is advantageous over traditional speaker top outlets which generally have higher vertical footprints. The arranged zone can facilitate and / or maintain a relatively regular vapor flow in the enclosure. The arranged zone can realize vapor flows that have a certain uniformity over the length of the enclosure, which can control and / or avoid a localized flow of steam and / or local currents, such as those having a high speed and being able to cause a workout.
    公开号:FR3062712A1
    申请号:FR1851062
    申请日:2018-02-08
    公开日:2018-08-10
    发明作者:Benjamin Elias Dingel；Florian Weber；Alain Fleurette
    申请人:Trane International Inc；
    IPC主号:
    专利说明:

    Holder (s): TRANE INTERNATIONAL INC ..
    Agent (s): CABINET BEAU DE LOMENIE.
    (54) SUCTION LINE AND DOUBLE SUCTION LINE FOR AN UNDERWATER EVAPORATOR.
    FR 3 062 712 - A1 _ A suction duct (30) is arranged inside a tubular heat exchanger (10) and is placed relatively high and above the bundle of tubes (14) so as to do not splash upwards. The suction duct is configured with an area arranged (32) in fluid communication with a flow passage (38) inside the suction duct. The flow passage is in fluid communication with an outlet (24) of the enclosure (12). This is advantageous compared to traditional speaker top outlets which generally have higher vertical footprints. The arranged zone can facilitate and / or maintain a relatively regular flow of vapor in the enclosure. The arranged area can produce vapor flows which have a certain uniformity over the length of the enclosure, which can control and / or avoid a localized vapor flow and / or local currents, such as those having a high speed and being able to cause a workout.
    i
    FIELD The embodiments described here relate generally to a suction duct in a heat exchanger. In particular, apparatuses, systems, and methods relate to a refrigerant vapor suction line implemented in a submerged evaporator, such as a tubular evaporator, as part of a fluid circuit in a cooling unit, which can be implemented in a refrigeration system of a heating, ventilation, and air conditioning (HVAC) system.
    BACKGROUND Suction conduits are used in heat exchangers, for example for collecting evaporated fluids, such as fluids containing refrigerant vapor, which have to be transferred to other parts of a circuit, such as a cooling circuit, for example a fluid cooling device in an HVAC system.
    SUMMARY Heat exchangers can use suction ducts which can, for example, direct fluid vapor out of the heat exchanger and to other parts of a fluid heat exchange circuit.
    An example of such heat exchangers is a tubular heat exchanger. In certain embodiments, the tubular heat exchanger is a submerged evaporator which has a charge of refrigerant inside the enclosure in order to wet the tubes, for example a bundle of tubes, and where an exchange fluid heat, such as for example a refrigerant or a mixture comprising refrigerant is brought to a boil or evaporated out of the tubes and flows upwards into the enclosure.
    For example, the tubes or the bundle of tubes are arranged towards the lower section of the enclosure, where steam which is brought to a boil is drawn off above the enclosure or towards a relatively high position at l inside the enclosure.
    A suction duct is disposed in the enclosure, and is located relatively high and above the bundle of tubes so as not to entrain liquid or droplets which can be projected or splash up. The suction duct is configured with an area, such as for example openings, which may in certain circumstances be in the form of slots, holes, orifices, openings of different geometric shapes, and the like. The suction duct has the advantage of transporting vaporized fluid, for example steam or refrigerant gas, to an outlet from the enclosure by means of the suction duct.
    In some embodiments, the outlet of the enclosure is out of the side, such as for example at a longitudinal end thereof. A flow passage inside the suction duct is in fluid communication with the arranged area and with the outlet of the enclosure. This is advantageous compared to traditional speaker top outlets which generally have higher vertical footprints.
    In some embodiments, the flow passage of the suction duct is through a tube sheet which is then in fluid communication with the outlet of the enclosure.
    In some embodiments, the suction duct extends over the longitudinal length of the enclosure.
    Advantageously, the present configurations of the suction duct can avoid the appearance of localized phenomena, for example a localized flow of steam, and can maintain a relatively regular flow of steam. In some embodiments, the suction duct has an arranged zone configuration, where the openings in the flow passage of the suction duct provide vapor flows which are uniform or have some uniformity over the length of enclosure and suction duct. These configurations can control or avoid localized steam flow and / or local currents, where the speed may be high and cause entrainment.
    In some embodiments, the suction duct has an arranged area which can be configured, constructed, located, and / or arranged so as to manipulate, control, and / or measure flows and / or currents of steam.
    In some embodiments, the area arranged in the suction duct can generally facilitate a flow of steam which is upwards and towards the side towards the outlet on the side of the enclosure.
    In some embodiments, this upward and sideward flow may have a relatively regular curvature flow.
    In one embodiment, one or more suction ducts as described in any one or more of paragraphs [0006] to [0013] can be arranged inside the enclosure. a heat exchanger, such as, but not limited to, an evaporator, which is sometimes an immersed type evaporator.
    In some embodiments, the above heat exchangers can be implemented in a fluid cooling unit, which can be included in an HVAC or refrigeration system.
    In some embodiments, the above heat exchangers can be used in a fluid cooling device, such as for example a screw compressor fluid cooling device, which can be used for example in a HVAC and / or refrigeration unit and / or system.
    In some embodiments, the above heat exchangers can be used in relatively large centrifugal compressor fluid cooling devices.
    In general, in some embodiments, the above heat exchangers can be used in fluid cooling devices which can have pressure drop problems. In some examples, these fluid coolers can use a relatively high pressure refrigerant, such as, but not limited to, for example R134A.
    DRAWINGS These characteristics, aspects, and advantages as well as others of the heat exchanger and the suction duct will be better understood on reading the detailed description which follows, with reference to the appended drawings, in which:
    Figure 1 is a side view of an embodiment of a heat exchanger showing an embodiment of a suction duct in the heat exchanger.
    Figure 2 is a sectional view of the heat exchanger and the suction duct of Figure 1.
    Figure 3 is a perspective view of another embodiment of a heat exchanger showing another embodiment of a suction duct in the heat exchanger.
    Figure 4 is a side view of the heat exchanger and the suction duct of Figure 3.
    Figure 5 is a top view of the heat exchanger and the suction duct of Figure 3.
    Figure 6 is a perspective view of the suction duct of Figure 3.
    Figure 7 is a top view of the suction duct of Figure 3.
    Figure 8 is a side view of the suction duct of Figure 3.
    Figure 9 is an end view of the suction duct of Figure 3.
    Figure 10 is an end sectional view of an embodiment of a heat exchanger with an embodiment having multiple suction ducts.
    Figure 11 is a perspective view of another embodiment of a heat exchanger showing another embodiment having multiple suction ducts in the heat exchanger.
    Although the figures identified above show particular embodiments of the heat exchanger and the suction duct, other embodiments are also provided, as noted in these descriptions. In all cases, this presentation presents illustrated embodiments of the heat exchanger and suction duct which are by way of representation but not limitation. Many other modifications and embodiments can be devised by those skilled in the art which fall within the scope and spirit of the principles of the heat exchanger and the suction duct described and illustrated here.
    DETAILED DESCRIPTION The embodiments described here relate generally to a heat exchanger with a suction duct inside the heat exchanger, and configured to direct fluid vapor, such as for example refrigerant vapor, laterally through a flow passage of the suction duct and through a lateral outlet on the side of the heat exchanger.
    In particular, systems and methods relate to suction in a heat exchanger, such as for example a tubular heat exchanger which can function as a submerged evaporator, and implemented in a cooling unit. HVAC or refrigeration system.
    apparatuses, to conduits [0034] Figures 1 and 2 relate to an embodiment of a heat exchanger 10. Figure 1 is a side view of an embodiment of the heat exchanger 10 showing an embodiment of a suction duct 30 in a heat exchanger 10. FIG. 2 is a sectional view of the heat exchanger 10 and of the suction duct 30 of FIG. 1.
    The heat exchanger 10 as shown is a tubular heat exchanger. In certain embodiments, the tubular heat exchanger 10 is implemented in the form of an immersed type evaporator which has a charge of refrigerant inside the enclosure 12 for wetting the tubes 14, is shown. , ends for example a bundle of tubes, and where a heat exchange fluid, such as for example a refrigerant or a mixture comprising refrigerant is brought to a boil or evaporated out of the tubes 14 forming for example a bundle of tubes and flows upwards into enclosure 12.
    The heat exchanger 10 has an inlet 18 on one side (for example a water inlet) and an outlet 20 on the other side (for example a water outlet). Like this, the inlet 18 and the outlet 20 represent longitudinal sections of the enclosure 12, in which the tubes 14 extend longitudinally along the longitudinal direction of the enclosure 12.
    The heat exchanger 10 also includes a heat exchange fluid inlet 22 (for example a refrigerant inlet), which can be in fluid communication with a distributor 26. In some examples, the fluid heat exchange is a coolant, which can include a mixture of coolant (including steam and liquid) and lubricant such as for example oil. As shown, the heat exchange fluid inlet 22 is located or is disposed near the side of the outlet 20. As shown, the heat exchanger 10 also includes an oil recovery port 28 intended to direct oil which can spill into the enclosure 12. In certain examples as shown in FIG. 1, the oil recovery orifice 28 is located or is disposed near the side of the entry 18.
    As shown, the tubes 14 are arranged towards the lower section of the enclosure 12. When the heat exchanger 10 operates as an evaporator, the tubes 14 (for example one side of the tube) can transport a fluid treatment such as for example water, which can be relatively hotter than the refrigerant entering the enclosure 12. Refrigerant vapor which is brought to a boil (see arrows and reference 34) is withdrawn through part of the volume 16 of the enclosure 12, and towards the top of the enclosure 12 or in a relatively elevated position inside the enclosure 12.
    The heat exchanger 10 also includes inside the enclosure 12 a suction duct 30. The suction duct 30 is disposed in the enclosure 12, and is located relatively high and above the tubes 14, so as not to entrain liquid or droplets which may be projected or splash up. The suction duct 30 is configured with an arranged area 32, such as for example openings, which can in certain circumstances be in the form of slots, holes, orifices, openings of different geometric shapes, and the like. . The suction duct 30 can have the advantage of transporting vaporized fluid, for example steam or refrigerant gas, to a steam outlet 24 from the enclosure 12 by means of the suction duct 30.
    In some embodiments, the steam outlet 24 of the enclosure 12 is out of the side, such as at a longitudinal end thereof, for example an outlet end 20. A passage d flow 38 inside the suction duct 30 is in fluid communication with the arranged zone 32 and with the steam outlet 24 of the enclosure 12. The side flow passage 38 and the steam outlet 24 can be advantageous for example compared to traditional speaker top outlets, which generally have higher vertical footprints.
    In some embodiments, the flow passage 38 of the suction duct 30 is through a tube sheet (see for example a plate at the end 20 of the enclosure 12), and is in communication of fluid with the vapor outlet 24 of the enclosure 12.
    [0042] In some shapes of production, the suction pipe 30 stretches sure the length longitudinal of enclosure 12. [0043] In some shapes of production, the
    suction duct 30 can be cylindrical or tube-shaped, but can have other shapes and geometries. For example, the suction duct can be constructed in the form of a sheet, for example of metal, curved, folded or otherwise formed to have a bottom barrier facing downwards and one or more areas on the around or on top. For example, the bottom can be V-shaped, half-moon or crescent-shaped, another shape of bowl, or another shape of aerodynamic type for the lower barrier, and the like.
    In some examples, the suction duct can have its flow passage configured to be able to be inserted through a sheet of tube, such as for example an opening of circular type at the end, where the lower barrier can for example have any of the shapes described above to be able to be inserted through the tube sheet and can fit into the opening through the circular opening of the tube sheet and in certain circumstances be adjusted to the opening of the tube sheet.
    For example, the suction duct includes a circular opening designed to be able to be inserted through a sheet metal tube, and where barriers can be constructed of sheet metal, can be oriented, arranged, and / or configured to be connected or adjust to the opening in the tube sheet. Openings such as slots may be along the side or sides of the sheet, where the slots are relatively high over a height of the sheet.
    Advantageously, the present configurations of the suction duct 30 can avoid the appearance of localized phenomena, for example a localized flow of steam, and can maintain a relatively regular flow of steam. In some embodiments, the configuration of the arranged area 32 of the suction duct 30 can be configured, where the openings of the arranged area 32 in the flow passage 38 of the suction duct 30 can provide vapor flows which are uniform or have a certain uniformity over the length of the enclosure 12 and / or of the suction duct 30. These configurations can control or avoid a localized flow of vapor and / or local currents, for example where relatively velocities higher may be present and where there may be a risk of liquid entrainment.
    In some embodiments, the arranged area 32 can be configured, constructed, located, and / or arranged so as to manipulate, control, and / or measure flows and / or steam currents.
    In some embodiments, the area arranged 32 in the suction duct 30 can generally facilitate a flow of steam which is upwards and towards the side towards the outlet on the side of the enclosure. See for example the curved arrows of steam flow at 34 in volume 16 of enclosure 12.
    In some embodiments, this upward and sideward flow may have relatively regular curvature flow.
    The design of the arranged zone 32 can be obtained for example by looking at the level of the liquid flow, which is sometimes a mixture of lubricant (for example oil) and refrigerant (see for example the arrow at 36), and the direction of liquid flow where the lubricant increases when the refrigerant is brought to a boil or vaporized (see for example the arrows at 34). In some cases, there may be places in the enclosure 12 which may be susceptible to relatively higher appearances of emulsion, for example lubricant, and where it may be desired to maintain relatively more benign vapor currents. In certain circumstances, it may be desirable that the flow of the liquid (for example the arrow at 36) and the flow of the steam (for example the arrows at 34) are in the same direction, so as not to create appearance of splashes or not causing, for example, the direction of the vapor to go against the direction of the liquid flow. In some embodiments, the arranged area, for example 32, can be configured to direct the flow of vapor so that it is tilted relative to the direction of the flow of liquid. An axial distribution of the steam in the enclosure 12 can be generated using heat transfer models and then controlling the arranged area 32, for example openings, in order to manipulate the generation of steam and obtain velocity vectors which may be desired. For example, heat transfer models, steam generation models, and / or instant gas expansion models (for example to take into account the steam already generated by an expansion device when steam and liquid with two phases flow into the enclosure from a distributor and to take into account flows affected by a distributor) can be used and / or a computer test of fluid dynamics (CFD) can be carried out, and equivalent.
    The arranged area 32 may have a variable resistance for example over the length of the suction duct 30, and may be designed to control vectors of vapor speed, for example rectilinear, curved, and the like. The arranged zone 32 can be designed to influence the flow field, which can be modeled as described above.
    In some cases, there can be relatively more generation of vapor where the refrigerant enters the enclosure 12 at the level of the fluid inlet 22 (for example towards the outlet side of the water 20), where there may be relatively higher speeds. In such circumstances, it may be desired to have relatively smaller openings for the arranged area 32 towards the water outlet side 20 compared to the openings towards the other end, for example the water inlet side 18 .
    This vapor shift can be in the same direction as the accumulation of lubricant (for example oil). As shown in Figure 1, an oil concentration is on the left towards the oil recovery port 28, where liquid flows from the right, and where the speeds can shift to facilitate flow build-up, and vapor currents can flow relatively smoothly upwards and to the side (e.g. curved).
    The above suction ducts, for example 30, can cause a certain pressure drop but where the transfer can be reduced, while using a vapor offset model and a lateral outlet.
    It should be noted that the arranged area 32 can be configured in a number of ways. In certain embodiments, the arranged zone 32 can be openings such as for example slots or openings with different geometries, including for example circular, oblong, square, rectangular, or the like.
    In some embodiments, the arranged area 32 may include openings configured in the form of gills, such as, but not limited to, sheet metal folded to create the openings, while also comprising a additional barrier.
    It should be noted that, in a single passage of tubes (for example as shown in Figure 1 from the inlet 18 to the outlet 20), there may perhaps be a generation of steam which has a relatively less equal distribution over the length of the enclosure 12. In certain cases, multiple passages of tubes 14 (for example behind and in front, as from one end to the other end and back), there may be a generation of vapor which is distributed relatively more evenly over the length of the enclosure.
    Figures 3 to 5 relate to one embodiment of a heat exchanger 100. Figure 3 is a perspective view of the heat exchanger 100 showing another embodiment of a duct suction 130 in the heat exchanger 100. Figure 4 is a side view of the heat exchanger 100 and the suction duct 130. Figure 5 is a top view of the heat exchanger 100 and the suction duct 130.
    The heat exchanger 100 as shown is a tubular heat exchanger. In certain embodiments, the tubular heat exchanger 100 is implemented as an immersed type evaporator which has a charge of refrigerant inside the enclosure 112 for wetting the tubes, for example a bundle of tubes, and where a heat exchange fluid, such as for example a refrigerant or a mixture comprising refrigerant is brought to a boil or evaporated out of the tubes and flows upwards into the enclosure 112. For ease of In the illustration, a tube sheet 114 is shown where tubes can be inserted into the volume 116 of the enclosure 112.
    The heat exchanger 100 has an inlet side 118 (for example a water inlet side) on one side and an outlet side 120 (for example a water outlet side) of the 'other side. As shown, the inlet side 118 and the outlet 120 represent longitudinal ends of the enclosure 112, where the tubes extend longitudinally along the longitudinal direction of the enclosure 12.
    The heat exchanger 100 also includes a heat exchange fluid inlet (not shown), for example like the heat exchanger 100, and which can be in fluid communication with a distributor 126. In certain examples , the heat exchange fluid is refrigerant, which may include a mixture of refrigerant (comprising steam and liquid) and lubricant such as for example oil. As shown, the heat exchange fluid inlet is located or is disposed near the outlet side 120. As shown, the heat exchanger 100 also includes an oil recovery port 128 for directing oil which can accumulate in the enclosure 112. In certain examples as shown in FIG. 3, the oil recovery orifice 128 is located or is disposed near the inlet side 118 .
    As shown, the tubes would be arranged towards the lower section of the enclosure 112. When the heat exchanger 100 operates as an evaporator, the tubes (for example one side of the tube) can transport a treatment fluid. such as for example water, which can be relatively hotter than the refrigerant entering the enclosure 112. Refrigerant vapor which is brought to a boil (see the arrows and the reference 134) is drawn through a part of the volume 116 of the enclosure 112, and towards the top of the enclosure 112 or in a relatively elevated position inside the enclosure 1.12.
    The heat exchanger 100 also includes inside the enclosure 112 a suction duct 130. The suction duct 130 is disposed in the enclosure 112, and is located relatively high and above the tubes , so as not to entrain liquid or droplets which may splash or splash up. The suction duct 130 is configured with an arranged area 132, such as for example openings, which can in certain circumstances be in the form of slots, holes, orifices, openings of different geometric shapes, and the like. . The suction duct 130 can have the advantage of transporting the vaporized fluid, for example steam or refrigerant gas, to a steam outlet 124 from the enclosure 112 by means of the suction duct 130.
    In some embodiments, the steam outlet 124 from the enclosure 112 is out of the side, such as at a longitudinal end thereof, for example an outlet end 120. A passage d the flow 138 inside the suction duct 130 is in fluid communication with the arranged zone 132 and with the steam outlet 124 of the enclosure 112. The side flow passage 138 and the steam outlet 124 can be advantageous for example compared to the traditional exits on the top of the enclosure, which generally have higher vertical footprints.
    In some embodiments, the flow passage 138 of the suction duct 130 is through a sheet of end tube (see for example the plate at the end 120 of the enclosure 112) , which is in fluid communication with the vapor outlet 124 of the enclosure 112.
    In some embodiments, the suction duct 130 extends over the longitudinal length of the enclosure 112. It should be noted that the suction duct 130 may extend over the entire length of the enclosure 112 from one end to the other (118 to 120), but may also extend over less than the entire length of enclosure 112, for example from the outlet end 120 where the suction duct 120 is supported.
    In some examples, the suction duct may have its flow passage configured to be able to be inserted through a sheet of tube, such as for example a circular type opening at the end, where the lower barrier may have for example any of the shapes described above to be able to be inserted through the tube sheet and can be adjusted with the opening through the circular opening of the tube sheet and in certain circumstances be adjusted to the opening of the tube sheet.
    For example, the suction duct includes a circular opening designed to be able to be inserted through a sheet metal tube, and where barriers can be constructed of sheet metal, can be oriented, arranged, and / or configured to be connected or adjust to the opening in the tube sheet. Openings such as slots may be along the sides of the sheet, where the slots are relatively high over a height of the sheet.
    In some embodiments, the suction duct 130 may be cylindrical or in the form of a tube, but may have other shapes and geometries. For example, the suction duct may be constructed of sheet metal, for example metal, be bent, folded or otherwise formed to have a bottom barrier facing downward and one or more open areas around or on the above. For example, the bottom may be a V shape, a half moon or crescent shape, another bowl shape, or another aerodynamic type shape for the lower barrier, and the like. In some examples, the suction duct can have its flow passage configured to be able to be inserted through a sheet of tube, such as for example a circular type end, where the lower barrier can have for example any of the forms of the above described, and to be in fluid communication with the circular end so that it can be inserted through the tube sheet, and can adjust with the tube sheet.
    For example, the suction duct comprises a circular opening designed to be able to be inserted through a sheet metal tube, and where barriers, for example constructed of sheet metal can be oriented, arranged, and / or configured to constitute the suction duct which connects or fits over the opening in the tube sheet with slots along the side or sides of the sheet, slots relatively high over the height of the sheet.
    Advantageously, the present configurations of the suction duct 130 can avoid the appearance of localized phenomena, for example a localized flow of steam, and can maintain a relatively regular flow of steam. In certain embodiments, the configuration of the arranged area 132 of the suction duct 130 can be configured, the openings of the arranged area 132 in the flow passage 138 of the suction duct 130 then being able to produce vapor flows which are uniform or have a certain uniformity over the length of the enclosure 112 and / or of the suction duct 130. Such configurations can control or avoid a localized flow of vapor and / or local currents, for example where the speed can be high and cause training.
    In some embodiments, the arranged area 132 which can be configured, constructed, located, and / or arranged so as to manipulate, control, and / or dose flows and / or steam currents.
    In some embodiments, the area arranged 132 in the suction duct 130 can generally facilitate a flow of steam which is upwards and towards the side towards the outlet on the side of the enclosure. See for example the curved arrows of steam flow at 134 in volume 116 of enclosure 112.
    In some embodiments, this upward and sideward flow may have a relatively regular curvature flow.
    The design of the arranged zone 132 can be carried out for example by looking at the level of wishing that arrow at 136) the flow of the liquid, which is sometimes a mixture of lubricant (for example oil) and refrigerant (see for example the arrow at 136), and the direction of liquid flow where the lubricant increases as the refrigerant is brought to a boil or vaporized (see for example the arrows at 134). In some cases, there may be places in the enclosure 112 which may be susceptible to relatively higher appearances of emulsion, for example lubricant, and where it may be desired to maintain relatively more benign vapor currents. In certain circumstances, it is possible for the flow of liquid (for example la and the flow of vapor (for example the arrows at 134) to flow in the same direction, so as not to create appearances of splashes or to bring about for example the direction of vapor to go against the direction of liquid flow. In some embodiments, the arranged area, for example 132, can be configured to direct the flow of vapor so that it is inclined with respect to the direction of liquid flow. An axial distribution of the vapor in the enclosure 112 can be generated using heat transfer models and then controlling the arranged area 132, for example openings, to manipulate steam generation and to obtain velocity vectors that may be desired. For example, heat transfer models, steam generation models, and / or expansion models i gas instant (for example to take into account steam already generated by an expansion device when steam and two-phase liquid flow into the enclosure from a distributor and to take into account flows affected by a distributor) can be used and / or a computer test of fluid dynamics (CFD) can be carried out, and equivalent.
    The arranged area 132 may have a variable resistance for example over the length of the suction duct 130, and may be designed to control vectors of vapor speed, for example rectilinear, curved, and the like. The arranged area 132 can be designed to influence the flow field, which can be modeled as described above.
    In some cases, there can be relatively more generation of vapor where the refrigerant enters the enclosure (for example towards the water outlet end 120), and where there can be relatively higher speeds. high. In such circumstances, it may be desired to have relatively smaller openings for the arranged area 132 towards the outlet side 120 compared to the openings towards the other end, for example the inlet side 118.
    As shown in Figures 3 to 5 for example, the arranged area 132 may be such that the openings may be smaller on the outlet side 120 and then have an increasing size towards the other end, for example the input side 118. See also Figures 6 to 8 described below.
    Such a vapor shift can be in the same direction as the accumulation of lubricant (for example oil). As shown in Figures 3 and 4, an oil concentration can occur on the right towards the oil recovery port 128, where the liquid flows from the left, and where the speeds can shift to facilitate an accumulation flow, and vapor currents can flow relatively smoothly upwards and to the side (for example curved).
    The above suction ducts, for example 130, can provide a certain pressure drop but where the transfer can be reduced, while using a vapor offset model and a lateral outlet.
    It should be noted that the arranged area 132 can be configured in a number of ways. In some embodiments, the arranged area 132 may be openings such as for example slots or openings with different geometries, including for example circular, oblong, square, rectangular, and the like.
    In some embodiments, the arranged area 132 may include openings configured in the form of gills, such as, but not limited to, material folded from a sheet to create the openings, any also including an additional barrier.
    It should be noted that in a single passage of tubes (for example as shown in Figure 3 from the inlet 118 to the outlet 120), there may perhaps be a generation of steam which has a relatively less equal distribution over the length of the enclosure 112. In some cases, multiple passages of tubes (for example back and forth, from one end to the other and back), there may be have a generation of steam which is distributed relatively more evenly over the length of the enclosure.
    Figures 6 to 9 show more specifically the suction duct 130. Figure 6 is a perspective view of the suction duct 13 0. Figure 7 is a top view of the suction duct 130. The Figure 8 is a side view of the suction duct 130. Figure 9 is an end view of the suction duct 130. In some cases, identical references are not further described.
    In some embodiments, the suction duct 130 has one end configured to be inserted through an opening in a sheet of tube 140 or a support. In certain embodiments, the tube sheet 140 may have a bevel 142 to facilitate the insertion of the suction duct 130 into the opening of the tube sheet 140. It should be noted that the suction duct 130 to its end may have bevel 142 to facilitate insertion.
    In the embodiment shown, the arranged area 132 is shown to increase from one end to the other end. For example, the openings in the arranged area 132 in the flow passage 138 become larger from one end to the other end. It should be noted that the arranged area shown for the heat exchanger 100 (as well as for the heat exchanger 10) is simply an example and may be desired for one or certain types of steam flow regimes, while other arranged area configurations, for example sizes, size variations, geometries, frequencies, and the like can be used as desired, appropriate, and / or necessary.
    Double or multiple suction ducts inside the enclosure In one embodiment, heat exchangers similar to the heat exchangers described above, for example 10, 100 can include more d '' a suction pipe in the enclosure.
    Figures 10 and 11 show examples of this, where an enclosure 212, 312 of an evaporator 200, 3 00, such as for example an immersed type evaporator comprises two suction conduits 230, 330, respectively enclosed by the volume 216, 316, of the enclosure 212, 312. Each of the suction conduits 230, 330 shown in Figures 10 and 11 is of a design similar to Figures 1 to 9, but there are two in enclosure 212, 312. Similar approaches can be used with the arranged areas 232, 332, suction ducts 230, 330 of FIGS. 10 and 11 as in FIGS. 1 to 9, where elements numbered in the same way are similar to those in Figures 1 to 9.
    A tubular evaporator, such as for example a submerged evaporator can be used in a refrigeration system, such as for example a water cooling device. The submerged evaporator in certain cases is for example a submerged evaporator of the swimming pool type.
    Multiple suction ducts can be used in the evaporator enclosure to directly access the interior of the evaporator and from the side of the evaporator enclosure, for example by being supported by a end tube sheet of the evaporator enclosure. Such a configuration can be useful when it is used, for example, in a refrigeration system with multiple compressors, for example two or more compressors, serving the same cooling circuit. Using two or more connections, for example, multiple separate connections for direct access to the evaporator may be advantageous in some cases over a single duct or connection which would then divide the flow leaving the enclosure of the evaporator.
    In one embodiment, the suction duct (s) may generally have an annular shape, such as for example tubular, cylindrical, conical, and the like. The suction duct (s) have a flow passage inside and in a perimeter wall forming the duct (s). The suction duct (s) have an area of openings for receiving refrigerant in the vapor state inside the duct (s) and transporting it out of the enclosure through the flow passage. The area may have openings oriented towards the top of the duct (s) relative to the bottom of the enclosure. In one embodiment, the arranged area or the openings face in a direction towards the top of the enclosure and a direction away from the bottom of the enclosure. In one embodiment, the arranged area or the openings face at an angle to the vertical, and in some cases are inclined away from the sides of the enclosure and relatively in a direction towards the center and the top of the enclosure. The openings may have orientation, geometry, arrangement, density, and / or sizing, and the like to optimize the internal flow of vapor in the enclosure of the evaporator and in the suction duct (s). .
    In one embodiment, the arranged area is located so as to face the vertical. In one embodiment, the arranged area or the openings are located so as to be turned or inclined around the curved side of the suction duct towards the side of the suction duct and to be inclined with respect to the vertical and also make face towards the center of the top of the enclosure, rather than being located on the top facing vertically or situated so as to face towards the sides. The orientation of the arranged area or the openings can direct the flow to avoid dead zones, obtaining a uniform flow of evaporation out of the tube bundle.
    A design with two or more compressors in a single cooling circuit can be used to obtain a higher capacity rather than with a large compressor. Thus, depending on the number of compressors and the capacity provided by each of the compressors, the number of suction ducts and their configuration (for example size, orientation, as well as dimensioning of the zone, orientation, calibration, etc.) can be appropriately determined.
    In one embodiment, there is a ratio of a compressor for a suction duct used in a shared evaporator enclosure.
    By using multiple suction pipes for multiples of compressors, for example, one suction pipe for each compressor, there is no need to divide or balance a flow outside of the enclosure with additional connections, seals, parts, hardware, e.g. tees, dividers, and the like, which can be expensive, complicated, and can affect operation and performance (e.g. additional pressure drop, an unbalanced flow, etc.). The use of multiple suction lines can provide multiple vapor flow streams with a direct line from the interior of the evaporator to the compressor.
    In one embodiment, the compressors used can be of the same capacity or of a different capacity (for example size), where each suction duct used is also of an appropriate size with the respective compressor with which it can be matched.
    In the example of using a single single duct for multiple compressors or a relatively larger compressor, a larger suction duct through the end tube sheet must be dimensioned appropriately and used. By using multiple smaller ducts to service multiple compressors or a large compressor, while accessing the evaporator enclosure through a sheet metal end tube, efficient use of space inside of the evaporator enclosure can be realized. For example, the bottom of multiple conduits may be located relatively higher than using a single large conduit, and multiple conduits may be spaced closer to the sides rather than a single conduit located in the area towards the middle and above of the enclosure. In addition, the fact of using multiple conduits can increase the flow through a central zone of the enclosure and avoid dead zones in this place as well as dead zones towards the sides. Efficient use of space can also be achieved by more play with the tube bundle, water box connection play, and avoiding liquid transfer.
    During partial operation, for example, a partial load where one or more of the compressors does not work or operates at a lower capacity, placing the duct (s) to the side can have little or no impact on performance, and in some cases can still treat dead areas towards the center and above in the enclosure, as well as some sides in the enclosure.
    It should be noted that the configuration of the suction duct relative to the access to the evaporator enclosure is not limiting. For example, each of the two ends of the enclosure can be used to access the interior of the evaporator enclosure, while being supported by a sheet of end tube if it is available. For example, in the use of two compressors, the suction duct (s) can both access the same end of the different end on the side of the evaporator enclosure. If more than two compressors are used, then the other end can be used when necessary. For example, in an arrangement with three or four compressors, two suction ducts could access the interior of the evaporator from one end, while the other or the other two could access from the other end. It should also be noted that, inside the enclosure, each suction duct used can extend the same distance or different distances along the length of the enclosure, as is appropriately designed by example to support the compressor with which a respective suction duct is paired. Thus, in a single cooling circuit using more than one compressor, there are multiple configurations for access into the side and end of the evaporator enclosure.
    Figure 10 is an end sectional view of one embodiment of a heat exchanger 200 with one embodiment of multiple suction ducts 230.
    Figure 10 shows a schematic end view of an embodiment of the heat exchanger 200. The heat exchanger 200 in the embodiment shown is an evaporator, for example an evaporator of the submerged type. The evaporator 200 has an enclosure 212 and tubes or a bundle of tubes 214. Two suction conduits 230 are shown with a flow passage 238. An arranged zone or an opening location 232 is provided and accesses the passage flow
    238. The arranged zones or openings 232 are shown towards the top of the suction conduits 230 facing in a generally vertical direction. The arranged zone 232 can be situated at the level of other parts of the suction duct, and with respect to the enclosure 212. For example, the arranged zone 232 can be situated inclined with respect to the vertical, as also shown. in figure 10 in 232 on the side inclined inward with respect to 232 on the top. The suction ducts 230 can be supported by an end tube sheet 224 with openings through the tube sheet 224 which correspond to the end profile of the suction ducts 230 as shown at 230, 232 in the figure.
    Figure 11 is a perspective view of another embodiment of a heat exchanger 300 showing another embodiment of the multiple suction ducts 330 in the heat exchanger 300.
    The heat exchanger 3 00 in the embodiment shown is an evaporator, for example an evaporator of the submerged type. The evaporator 300 has an enclosure 312 and tubes or a bundle of tubes 314. Two suction conduits 330 are shown with a flow passage 338. An arranged zone or an opening location 332 is provided and accesses the passage flow 338. The arranged areas or openings 332 are shown towards the top of the suction ducts 330 facing in a generally vertical direction. It should be noted that the arranged zone 332 can be situated at the level of other parts of the suction duct, and with respect to the enclosure 312, as in inclined orientations. For example, the arranged zone 3 32 can be situated by being inclined with respect to the vertical, inclined inwards with respect to 332 on the top. The suction ducts 330 can be supported by one or more end tube sheets on the inlet side (water inlet side) 318 and the outlet side (water outlet side) 320, and have a similar support 340 as in the suction duct 130 of FIGS. 3 to 5. The tube sheet, for example on the outlet side 320, has openings 324 through on the side of the enclosure 312, which can correspond to the end profile of the suction ducts 330, so that the suction ducts 330 can be inserted into the tube sheet. The evaporator 300 has a lubricant recovery orifice 328 for directing lubricant, for example oil which can accumulate in the enclosure 312. The lubricant recovery orifice 328 as shown is located or arranged near the entry side 318.
    Refrigerant vapor which is brought to a boil (see arrows and reference 334) is drawn through part of the volume 316 of the enclosure 312, and towards the top of the enclosure 312 or in a position relatively high inside the enclosure 312.
    In some embodiments, the area arranged 332 in the suction duct 330 can generally facilitate the flow of flow steam which is upwards and on the side towards the outlet on the side of the enclosure. See for example the curved arrows of steam flow at 334 in volume 316 of enclosure 312.
    In some embodiments, this upward and sideward flow may have a relatively regular curvature flow.
    The design of the arranged zone 332 can be obtained for example by looking at the level of the flow of the liquid, which is sometimes a mixture of lubricant (for example oil) and refrigerant (see for example the arrow in 336), and the direction of liquid flow where lubricant increases as the refrigerant is brought to a boil or vaporized (see for example the arrows in 334). In some cases, there may be places in the enclosure 312 which may be susceptible to relatively higher appearances of emulsion, for example lubricant, and where one may wish to maintain relatively more benign vapor currents. In certain circumstances, it may be desired that the flow of liquid (for example the arrow at 336) and the flow of vapor (for example the arrows at 334) flow in the same direction, so as not to create back splash patterns or cause the direction of vapor to be against the direction of liquid flow, for example. In some embodiments, the arranged area, for example 332, can be configured to direct the flow of vapor so that it is inclined relative to the direction of the flow of liquid. An axial distribution of the steam in the enclosure 312 can be generated using heat transfer models and then controlling the arranged area 332, for example openings, to manipulate the generation of steam and to obtain velocity vectors which may be desired. For example, heat transfer models, steam generation models, and / or instant gas expansion models (for example to take into account the steam already generated by an expansion device when steam and liquid with two phases flow into the enclosure from a distributor and to take into account flows affected by a distributor) can be used and / or a computer test of fluid dynamics (CFD) can be carried out, and equivalent.
    In certain embodiments, the present heat exchangers, for example the heat exchangers 10, 100, 200, 300 can be implemented in a fluid cooling unit, which can be included in an HVAC system or refrigeration.
    In certain embodiments, the present heat exchangers, for example the heat exchangers 10, 100, 200, 300 can be used in a fluid cooling device, such as for example a compressor fluid cooling device screw, which can be used for example in an HVAC and / or refrigeration unit and / or system.
    In certain embodiments, the present heat exchangers, for example the heat exchangers 10, 100, 200, 300 can be used in relatively large centrifugal compressor fluid cooling devices.
    In general, in certain embodiments, the present heat exchangers, for example the heat exchangers 10, 100, 200, 300 can be used in fluid cooling devices which can have problems of pressure drop. In some examples, such fluid coolers may use a relatively high pressure refrigerant, such as, but not limited to, for example R134A.
    In general, the present suction conduits can be implemented in any suitable submerged evaporator, where relatively high pressure refrigerants can be used, and where there can be relatively more trade-offs on the pressure drop.
    Aspects
    Aspect 1. An immersed type evaporator, comprising:
    an enclosure comprising an internal volume, the enclosure extends in a longitudinal direction from a first end to a second end;
    a bundle of tubes arranged in the enclosure; a first tube sheet at the first end of the enclosure, and a second tube sheet at the second end of the enclosure; and multiple suction ducts extending in the longitudinal direction, the multiple suction ducts each include a flow passage and an area arranged in fluid communication with the volume of the enclosure, in which the passage the flow of each suction duct is in fluid communication with one of the first end and of the second end of the enclosure, so as to provide a lateral outlet on the enclosure for each suction duct, and in which the one of the first tube sheet and the second tube sheet or both comprise at least one opening for providing the lateral outlets in fluid communication with each of the suction conduits.
    Aspect 2. The submerged type evaporator of aspect 1, in which each suction line is configured to serve a compressor of a refrigeration system, so that the submerged type evaporator is a heat exchanger sharing.
    Appearance 3. The submerged type evaporator of aspect 1 or 2, in which the zone is arranged on top of one or more of the suction conduits.
    Aspect 4. The submerged evaporator of any one of aspects 1 to 3, in which the area is arranged at an angle on one or more of the suction ducts, and faces towards a top and a center of 1 'pregnant.
    Aspect 5. The submerged type evaporator of any of aspects 1 to 4, wherein the area includes openings which are dimensioned and / or have a density and / or have a geometry to optimize the flow of vapor to the interior of the enclosure by obtaining a uniform vapor flow from the evaporation outside the tube bundle and to avoid dead zones of flow in the enclosure.
    Aspect 6. The submerged type evaporator of any of aspects 1 to 5, in which the suction ducts are dimensioned according to a compressor with which the respective suction duct is paired.
    Aspect 7. The submerged type evaporator of any one of aspects 1 to 6, wherein one or more of the suction conduits extend a distance from the first end to the second end.
    Aspect 8. The submerged evaporator of any of aspects 1 to 7, wherein one or more of the suction conduits extend a distance less than that from the first end to the second end.
    Aspect 9. A refrigeration system comprising the evaporator of the submerged type of any of aspects 1 to 8.
    Aspect 10. The aspect 9 refrigeration system, in which the compressors are part of a single cooling circuit.
    Aspect 11. Process for directing suction vapor from an immersed type evaporator, comprising:
    evaporate a refrigerant in a volume of a pregnant thanks to a exchange relationship heat of refrigerant with a fluid passing through a beam of tubes inside of the enclosure;
    direct the vaporized refrigerant to a free zone part in the volume and above the tube bundle;
    directing the vaporized refrigerant into the multiple suction ducts arranged above the free zone portion, the suction ducts having an oriented area to optimize a flow of vapor inside the enclosure by obtaining a flow of uniform vapor from evaporation out of the tube bundle and to avoid dead zones of flow in the enclosure;
    direct vaporized refrigerant through a flow passage of the suction conduits; and direct the vaporized refrigerant out of the suction conduits through one side of the enclosure, where the side is at a longitudinal end of the enclosure.
    With regard to the above description, it should be understood that modifications can be made in detail, without departing from the scope of the present invention. It is intended that the description and embodiments shown are to be considered as examples only, with true scope and spirit of the invention which are indicated by the general meaning of the aspects or claims.
    权利要求:
    Claims (13)
    [1" id="c-fr-0001]
    1. Evaporator of the submerged type, characterized in that it comprises:
    a steering volume comprising in a (14, 114) disposed in a tube at the level of and a second sheet of an internal enclosure (12, 112), the enclosure extending longitudinally from a first end to a second end;
    a bundle of tubes the enclosure;
    a first sheet of the first end of the enclosure, tube at the second end of the enclosure; and at least one suction duct (30, 130) extending in the longitudinal direction, the at least one suction duct each comprising a flow passage (38, 13 8) therein and a zone arranged (32, 132) in fluid communication with the volume of
    The enclosure, in which the flow passage (38, 138) of each suction duct (30, 130) is in fluid communication with one of the first end and the second end of the enclosure (12, 112), so as to provide a lateral outlet (24, 124) on the enclosure for each suction duct, in which one or both of the first tube sheet and the second tube sheet comprises at least one opening to provide lateral outlets (24, 124) in fluid communication with each of the suction conduits, and in which the arranged area (32, 132) includes openings which are dimensioned and / or have a density and / or have a geometry for controlling the flow of vapor within the enclosure (12, 112) and for avoiding dead zones of flow within the enclosure.
    [2" id="c-fr-0002]
    2. submerged evaporator according to claim 1, wherein each suction duct (30, 130) is configured to serve a compressor of a refrigeration system, so that the submerged evaporator is a shared heat exchanger .
    [3" id="c-fr-0003]
    3. evaporator of the submerged type according to claim 1 or 2, wherein the arranged area (32, 132) is arranged on top of one or more of the suction conduits (30, 130).
    [4" id="c-fr-0004]
    4. immersed type evaporator according to claim 1 or 2, wherein the arranged area (32, 132) is arranged with an angle on one or more of the suction conduits (30, 130), and facing towards a top and a center of the enclosure (12, 112).
    [5" id="c-fr-0005]
    5. evaporator of the submerged type according to any one of claims 1 to 4, in which the openings are dimensioned and / or have a density and / or have a geometry to optimize the flow of vapor inside the enclosure. (12, 112) by obtaining a uniform vapor flow from the evaporation of the tube bundle (14, 114).
    [6" id="c-fr-0006]
    6. submerged evaporator according to any one of claims 1 to 5, in which the arranged zone (32, 132) is smaller on the outlet side (24, 124) than the arranged zone (32, 132) towards the end opposite the outlet side (24, 124).
    [7" id="c-fr-0007]
    7. Evaporator of the submerged type according to any one of claims 1 to 6, wherein the at least one suction duct (30, 130) comprises two suction ducts (30, 130).
    [8" id="c-fr-0008]
    8. submerged evaporator according to any one of claims 1 to 7, in which the at least one suction duct (30, 130) is dimensioned as a function of a compressor with which the respective suction duct is paired .
    [9" id="c-fr-0009]
    9. evaporator of the submerged type according to any one of claims 1 to 8, wherein the at least one suction duct extends over a distance from the first end to the second end.
    [10" id="c-fr-0010]
    10. Evaporator of the submerged type according to any one of claims 1 to 8, in which the at least one suction duct extend over a distance less than that from the first end to the second end.
    [11" id="c-fr-0011]
    11. Refrigeration system comprising the immersed type evaporator according to any one of claims 1 to 10.
    [12" id="c-fr-0012]
    12. Refrigeration system according to claim 11, wherein the compressors are part of a single cooling circuit.
    [13" id="c-fr-0013]
    13. A method of directing suction vapor from an immersed type evaporator, comprising:
    evaporating refrigerant in a volume of an enclosure (12, 112) through a heat exchange relationship of the refrigerant with a fluid passing through a bundle of tubes (14, 114) inside the enclosure;
    direct the vaporized refrigerant to a free zone part in the volume and above the tube bundle;
    directing the vaporized refrigerant into at least one suction duct (30, 130) arranged above the free zone portion, the suction ducts having an arranged area (32, 132) oriented to control the flow of vapor inside the enclosure and to avoid dead zones of flow in the enclosure;
    directing the vaporized refrigerant through a flow passage (38, 138) of the at least one suction duct; and directing the vaporized refrigerant out of the at least one suction duct through one side of the enclosure, where the side is at a longitudinal end of the enclosure.
    1/10
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    同族专利:
    公开号 | 公开日
    US10627139B2|2020-04-21|
    FR3038037B1|2018-04-20|
    GB201706912D0|2017-06-14|
    WO2016077436A1|2016-05-19|
    GB2588355B|2021-10-06|
    DE112015005112T5|2017-07-27|
    GB2547143A|2017-08-09|
    US20180299172A1|2018-10-18|
    GB2547143B|2021-03-24|
    FR3038037A1|2016-12-30|
    FR3062712B1|2020-11-06|
    US20200248937A1|2020-08-06|
    CN107110575A|2017-08-29|
    GB2588355A|2021-04-21|
    GB202100815D0|2021-03-10|
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    法律状态:
    2018-06-05| PLFP| Fee payment|Year of fee payment: 4 |
    2018-10-12| PLSC| Search report ready|Effective date: 20181012 |
    2020-05-20| PLFP| Fee payment|Year of fee payment: 6 |
    2021-05-19| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1556092|2015-06-29|
    FR1556092A|FR3038037B1|2015-06-29|2015-06-29|SUCTION DUCT AND DUAL SUCTION DUCT FOR AN IMMERSION EVAPORATOR|
    FR1851062A|FR3062712B1|2015-06-29|2018-02-08|SUCTION DUCT AND DOUBLE SUCTION DUCT FOR A SUBMERSIBLE EVAPORATOR|FR1851062A| FR3062712B1|2015-06-29|2018-02-08|SUCTION DUCT AND DOUBLE SUCTION DUCT FOR A SUBMERSIBLE EVAPORATOR|
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