JP4699964B2 - Heat exchanger for chemicals - Google Patents

Description

  The present invention relates to a chemical liquid heat exchange device including a heat exchange pipe that performs heat exchange with respect to a chemical liquid that is embedded in a heat transfer block and circulates inside the heat transfer block.

  Conventionally, heat exchange is performed with respect to a heat transfer block formed of a heat transfer material having heat transfer properties in which a heat exchange surface formed on the outer surface is cooled or heated, and a chemical solution embedded in the heat transfer block and distributed inside. A heat exchanger for a chemical solution provided with a heat exchange pipe is known, and the applicant of the present invention has already proposed a heat exchanger for adjusting the temperature of a chemical solution suitable for this kind of heat exchanger for a chemical solution, as disclosed in JP-A-8-193766. Proposed by the gazette.

This chemical solution temperature control heat exchanger (chemical solution heat exchange device) has a thermoelectric conversion element sandwiched between both sides, and a heat transfer block body and a heat radiator made of a heat-conducting material on both sides. The heat transfer block body is provided with a plurality of fluororesin pharmaceutical liquid conduits penetrating the heat transfer block body so as to be able to transfer heat, and the one side opening of the chemical liquid conduit is the temperature of the chemical liquid whose temperature is to be adjusted. The other side opening of the chemical solution conduit is communicated with the chemical solution merge chamber provided with the chemical solution outlet, and the radiator is provided with a cooling liquid flow path. .
JP-A-8-193766

  However, the above-described conventional heat exchanger for chemical liquid (heat exchanger for adjusting chemical liquid temperature) has the following problems.

  First, because the configuration is such that multiple (about 8) fluororesin pharmaceutical fluid conduits are joined to the chemical flow inflow chamber and the chemical flow outflow chamber, the manufacturing process increases. Complicating and further increasing the number of manufacturing steps. Therefore, it becomes an obstacle to miniaturization and miniaturization in the heat exchange device, and an increase factor related to the component cost and the manufacturing cost.

  Secondly, a contact thermal resistance is generated due to the penetration of the chemical conduit in the heat transfer block body, and a disturbance influence factor is generated due to the addition of the chemical confluence chamber on the outflow side of the chemical conduit. Therefore, the heat exchange efficiency in the heat exchange device is a factor that cannot be ignored, and there is a limit to increasing the heat exchange efficiency.

  An object of the present invention is to provide a heat exchanger for chemicals that solves the problems existing in the background art.

  In order to solve the above-described problem, the chemical liquid heat exchange device 1 according to the present invention is formed by a heat transfer block S formed of a heat transfer material S having heat transfer properties in which heat exchange surfaces Cu and Cd formed on the outer surface are cooled or heated. 2 and a heat exchange device for a chemical solution provided with a heat exchange pipe 3 for exchanging heat with respect to the chemical solution L embedded in the heat transfer block 2 and distributed in the heat transfer block 2. A heat exchange pipe unit U provided with a zigzag flow path Rg by sequentially bending the pipe 3 at predetermined intervals, and a heat transfer block 2 in which a part or all of the heat exchange pipe unit U is embedded, The thermo modules 21u ..., 21d ... attached to the heat exchange surfaces Cu, Cd of the heat transfer block 2, the cooling units 22u, 22d attached to the heat radiation surfaces of the thermo modules 21u, ..., 21d, and the thermo module 2 .., 21d... are pressed by the heat transfer block 2 and the cooling units 22u, 22d, and a plurality of pressurizations using springs and bolts and nuts arranged at positions where the end sides of the thermo modules 21u. Units 31... Are provided.

  On the other hand, in order to solve the above-described problems, the chemical heat exchange device 1 according to another embodiment of the present invention has a heat transfer material S having a heat transfer property in which the heat exchange surfaces Cu and Cd formed on the outer surface are cooled or heated. A heat exchanger for a chemical solution comprising the heat transfer block 2 formed by the above and a heat exchange pipe 3 for exchanging heat with respect to the chemical solution L embedded in the heat transfer block 2 and circulated in the heat transfer block 2. A heat exchange pipe unit U provided with a zigzag flow path Rg by sequentially bending the heat exchange pipe 3 formed by F at predetermined intervals, and a part or all of the heat exchange pipe unit U was embedded inside. The heat transfer block 2, the thermo modules 21u... 21d attached to the heat exchange surfaces Cu and Cd of the heat transfer block 2, and the cooling units 22u and 22d attached to the heat dissipation surfaces of the thermo modules 21u. S A plurality of modules using springs and bolts and nuts that are pressed by the heat transfer block 2 and the cooling sections 22u, 22d and arranged at positions where the end sides of the thermo modules 21u, 21d,. It is characterized by comprising pressurization units 31 and a liquid feed pump 13 connected to the upstream side of the heat exchange pipe unit U for circulating the chemical liquid L.

  In any case, according to a preferred aspect of the invention, at least the non-linear portions Ue... In the heat exchange pipe unit U can be covered with the heat insulating blocks 11a and 11b formed by the heat insulating material M having heat insulating properties. Further, at least the non-linear portion Ue... In the heat exchange pipe unit U is covered with heat transfer auxiliary blocks 12a and 12b formed by a heat transfer material S having a heat transfer property in which a heat exchange surface formed on the outer surface is cooled or heated. You can also.

  According to the chemical liquid heat exchange device 1 according to the present invention having such a configuration, the following remarkable effects can be obtained.

  (1) A heat exchange pipe unit U having a zigzag flow path Rg is formed by sequentially bending the heat exchange pipe 3 formed of the fluorine-based resin material F at predetermined intervals, and the heat exchange pipe unit U is transmitted through the heat exchange pipe unit U. Since it is embedded in the heat block 2, the heat exchange device 1 can be made smaller and more compact by reducing the number of parts and the number of manufacturing steps, and by simplifying the manufacturing process. You can plan. Moreover, since disturbance influence factors such as the chemical solution merging chamber are eliminated, it is possible to contribute to the improvement of the heat exchange efficiency.

  (2) Since the heat exchange pipe unit U having the zigzag distribution channel Rg is embedded in the heat transfer block 2 and the liquid feed pump 13 for circulating the chemical liquid L is connected to the upstream side of the heat exchange pipe unit U, The liquid pressure applied from the liquid pump 13 acts in the direction of expanding (swelling) the heat exchange pipe 3 formed of the fluorine resin material F, and reduces the contact thermal resistance between the heat exchange pipe unit U and the heat transfer block 2. can do. Thereby, it can contribute to the improvement of the further heat exchange efficiency.

  (3) Using the springs and bolts and nuts that pressurize the thermo modules 21u ..., 21d ... by the heat transfer block 2 and the cooling units 22u, 22d, and place the thermo modules 21u ..., 21d ... in a position that regulates the edges. Are provided with a pressure setting function and a position shift prevention function for the thermo modules 21u, 21d,. Therefore, even if it is under various use environment, position shift of thermo module 21u ..., 21d ... can be prevented, and unnecessary capability fall can be avoided.

  (4) If at least the non-linear part Ue ... in the heat exchange pipe unit U is covered with the heat insulating blocks 11a and 11b formed by the heat insulating material M according to a preferred embodiment, useless heat dissipation due to the disturbance. (Heat absorption) can be prevented, and the heat exchange pipe unit U can be prevented from being damaged.

  (5) A heat transfer auxiliary block formed by a heat transfer material S having heat transfer property in which at least the non-linear portion Ue... In the heat exchange tube unit U is cooled or heated by a suitable mode. If covered with 12a and 12b, in addition to preventing unnecessary heat dissipation (heat absorption) due to disturbance, the heat exchange capacity can be further increased by increasing the heat exchange area.

  Next, the best embodiment according to the present invention will be given and described in detail with reference to the drawings.

  First, components (constituent members) constituting the basic part of the chemical liquid heat exchange apparatus 1 according to the present embodiment will be described with reference to FIGS.

  Reference numeral 3 denotes a heat exchange tube having a circular cross section. The heat exchange tube 3 is integrally formed of a fluorine-based resin material F, and as shown in FIG. 3, a curved portion (non-linear portion) Ue folded back at 180 ° at predetermined intervals (fixed intervals). The heat exchange pipe unit U having the zigzag flow path Rg is formed. For this reason, the bending directions of the bending portions Ue... That are sequentially formed are alternately opposite to each other. As the fluorine-based resin material F, PTFE, PFA, or the like that is not eroded even by a chemical solution L containing ammonium fluoride or hydrofluoric acid having strong erosion properties can be used. In addition, since the fluororesin material F is not necessarily a material having good heat conductivity, it is desirable to be as thin as possible from this viewpoint. However, in order to prevent the generation of wrinkles, etc., in order to form the curved portion Ue, A certain amount of thickness is required. Therefore, it is necessary to select the actual thickness for the heat exchange tube 3 so as to satisfy both of these conditions. Further, when forming the curved portions Ue in the heat exchange pipe 3, in order to prevent the curved portions Ue from being crushed, a filler (insert material) is used and bent by a bender processing machine while being heated to a high temperature. Just do.

  2 is a heat transfer block. 2 and 1, the heat transfer block 2 has a function of embedding a part of the heat exchange pipe unit U, and has flat heat exchange surfaces Cu, Cd on the upper and lower surfaces serving as outer surfaces. Form. The heat exchange surfaces Cu and Cd are cooled or heated by thermo modules 21u. The heat transfer block 2 is constituted by block halves 2u and 2d that are divided into two parts in the vertical direction in order to embed the heat exchange pipe unit U. As shown in FIG. 4, the block half body 2d is formed into a flat rectangular parallelepiped plate shape, and the upper surface (abutting surface) is fitted with a straight portion excluding the curved portion Ue in the heat exchange pipe unit U. The mating semicircular straight fitting grooves 21 are formed so as to correspond to the heat exchange pipe unit U. As a material for forming the block half 2d, for example, carbon graphite, amorphous carbon, aluminum, copper, silicon carbide, or the like having heat conductivity can be used. Two such block halves 2d are prepared, one being the block half 2u and the other being the block half 2d.

  11a and 11b are heat insulation blocks. The heat insulating blocks 11a and 11b can be formed of a heat insulating material M having heat insulating properties, and may be an inexpensive heat insulating material such as a urethane material. When the heat exchange pipe unit U is embedded in the heat transfer block 2, the curved portion Ue (and a part of the straight portion) is exposed to the outside from the heat transfer block 2. The heat insulation blocks 11a and 11b cover the heat exchange pipe unit U exposed from the heat transfer block 2, and the heat insulation blocks 11a and 11b are also block half bodies 11au, 11ad, 11bu, and 11bd in the same manner as the heat transfer block 2. (See FIG. 5). Accordingly, a fitting groove having a semicircular cross section corresponding to the shape of the heat exchange tube unit U is provided on the abutting surface of each block half 11au, 11ad, 11bu, 11bd. In addition, if a soft material is used for the heat insulation blocks 11a and 11b, the fitting groove is unnecessary and it is only necessary to bond them together. By using such heat insulation blocks 11a and 11b, unnecessary heat dissipation (heat absorption) associated with disturbance can be prevented, and damage to the heat exchange pipe unit U can be prevented.

  Next, an assembling method of the chemical liquid heat exchange device 1 according to the present embodiment including such components (components) will be described with reference to FIGS.

  First, the heat transfer block 2 is attached to the heat exchange pipe unit U manufactured in advance. In this case, the straight portions except the curved portions Ue in the heat exchange pipe unit U are fitted into the straight fitting grooves 21 in the block halves 2u and 2d, and as shown in FIG. Assemble 2d and assemble. At this time, an amorphous heat transfer medium such as silicon grease can be applied to each of the linear fitting grooves 21. Further, similarly to the heat transfer block 2, the heat insulating blocks 11 a and 11 b are attached to the heat exchange pipe unit U.

  On the other hand, as shown in FIG. 5, one heat exchange surface Cu of the heat transfer block 2 is provided with a thermo module 21 u using a Peltier element, and further, a heat radiating surface (heat absorbing surface) of the thermo module 21 u. A cooling unit 22u is attached to the above. Similarly, a thermo module 21d using Peltier elements is attached to the other heat exchange surface Cd of the heat transfer block 2, and a cooling part 22d is attached to the heat radiating surface (heat absorbing surface) of the thermo module 21d. To do. The cooling units 22u and 22d can use water-cooled coolers. In FIG. 5, reference numerals 23u and 23d denote water distribution pipes that circulate cooling water through the cooling units 22u and 22d.

  The heat transfer block 2, the thermo modules 21u, 21d, and the cooling units 22u, 22d are fixed by attaching a plurality of pressurizing units 31 (FIG. 6) using springs and bolts and nuts. In this case, an appropriate contact pressure is maintained to be applied to the heat transfer blocks 2 and the thermo modules 21u and 21d sandwiched between the cooling units 22u and 22d. As shown in FIG. 7, which will be described later, the pressurizing sections 31... Use springs 32.

  By the way, since the chemical liquid heat exchange device 1 according to the present embodiment is configured as a sealless type, it is possible to widen the temperature control range, and as a result, the thermal transfer block 2. There is a possibility that the modules 21u..., 21d. For this reason, as shown in FIG. 6, the pressurizing units 31 are arranged at positions where at least the end sides of the thermo modules 21u, 21d,. Thereby, even if it is under various use environment, position shift of thermo module 21u ..., 21d ... can be prevented, and unnecessary capability fall can be avoided. As described above, the pressurizing units 31... Share both the pressure setting function and the position shift prevention function for the thermo modules 21u.

  The chemical solution heat exchange device 1 is obtained by the above assembly. According to such a heat exchanger 1 for chemicals, the heat exchange pipe unit U having the zigzag flow path Rg is obtained by sequentially bending the heat exchange pipe 3 formed of the fluorine resin material F at predetermined intervals. Since the heat exchange pipe unit U is partially embedded in the heat transfer block 2, the heat exchange device 1 can be made compact and compact by greatly reducing the number of parts and the number of manufacturing steps and simplifying the manufacturing process. This can be realized, and cost reduction related to component costs and manufacturing costs can be achieved. Moreover, since disturbance influence factors such as the chemical solution merging chamber are eliminated, it is possible to contribute to the improvement of the heat exchange efficiency. In addition, since the heat exchange pipe unit U is formed by only one pipe member, there is an advantage that the liquid L (stagnation) of the chemical liquid L is not generated and dust or the like is not easily collected.

  On the other hand, as shown in FIG. 1, a liquid feed pump 13 for circulating the chemical liquid L is connected to the upstream side of the heat exchange pipe unit U. This configuration is the chemical heat exchanger 1 according to another embodiment of the present invention. In such a configuration, that is, a part of the heat exchange pipe unit U having the zigzag flow path Rg is embedded in the heat transfer block 2 and the liquid supply liquid is circulated upstream of the heat exchange pipe unit U. If the pump 13 is connected, the liquid pressure applied from the liquid feed pump 13 acts in the direction of expanding (swelling) the heat exchange pipe 3 formed of the fluorine resin material F, and the heat exchange pipe unit U and the heat transfer block. The contact thermal resistance between the two can be reduced. As a result, the heat exchange efficiency can be further improved. When the liquid feed pump 13 is connected to the downstream side of the heat exchange pipe unit U, the hydraulic pressure acts in the direction in which the heat exchange pipe 3 is contracted. Increases resistance.

  Next, functions of the chemical liquid heat exchange device 1 according to the present embodiment will be described with reference to FIGS.

  When the chemical liquid L is cooled by the chemical liquid heat exchange device 1, the thermo modules 21u, 21d, ... are energized to cool the heat exchange surfaces Cu, Cd of the heat transfer block 2. At this time, the heat radiation from the heat radiation surfaces of the thermo modules 21u, 21d,... Is absorbed by the cooling units 22u, 22d.

  Further, the liquid feeding pump 13 is operated to supply the chemical liquid L to the inlet Ui on the upstream side of the heat exchange pipe unit U as shown in FIG. The chemical liquid L supplied to the inflow port Ui flows in a zigzag manner through the flow path Rg of the heat exchange tube unit U and reaches the outflow port Uo of the heat exchange tube unit U. And the chemical | medical solution L which reached the outflow port Uo is supplied (circulated) to the apparatus etc. in which the chemical | medical solution L is used via the supply piping 31. FIG. At this time, the chemical liquid L flowing through the heat exchange pipe unit U is heat exchanged, that is, cooled through the heat exchange surfaces Cu and Cd.

  Thus, in the case of the chemical liquid heat exchange device 1 according to the present embodiment, the chemical liquid L flows through the heat exchange pipe unit U in which no joint portion exists, and therefore, a seal ring such as an O-ring can be eliminated. Normally, this type of seal ring is made of a fluorine-based resin material that is strong against the chemical liquid L, and therefore the transition point of the thermal expansion coefficient need not be considered by eliminating the seal ring. Therefore, in the chemical liquid heat exchange device 1 according to the present embodiment, a wide temperature control range of about −20 to 200 ° C. can be secured, and the working pressure range of the hydraulic pressure is about 3 MPa (however, positive pressure) Only).

  Next, the chemical liquid heat exchange device 1 according to the modified embodiment of the present invention will be described with reference to FIGS. 7 and 8.

  FIG. 7 shows an example of a change in the overall configuration of the chemical liquid heat exchange device 1 and shows a mode in which two heat exchange pipe units U are used in an overlapping manner. In this case, the thermo module 21u is attached to the upper heat exchange surface Cu of the heat transfer block 2 of the upper heat exchange tube unit U, and the heat of the lower surface of the heat transfer block 2 of the lower heat exchange tube unit U is added. Thermo modules 21d are attached to the exchange surface Cd. As a result, the quantity of heat exchange pipe units U ... doubled, so that the processing capacity can be increased, and pressure loss can be reduced by connecting the two heat exchange pipe units U ... in parallel. In addition, 31 ... shows the several pressurization part using the spring 32 ... and the bolt nut 33 ..., and pressure management with respect to the thermomodule 21u ..., 21d ... sandwiched between the heat-transfer block 2 ... and each cooling part 22u, 22d. Perform (pressure adjustment).

  FIG. 8 shows a size change example of the chemical liquid heat exchange device 1. The chemical liquid heat exchange device 1 has a size in which five rows of thermo modules 21 u are arranged along the longitudinal direction of the heat transfer block 2. Thus, if the chemical heat exchanger 1 according to this embodiment is used, the ability of the chemical heat exchanger 1 can be easily changed only by changing the size of the heat exchange pipe unit U and the heat transfer block 2, and the cost merit is improved. Can be obtained.

  7 and 8, other configurations and functions can be implemented according to the embodiment shown in FIGS. 1 to 6. Therefore, in the embodiment of FIGS. 7 and 8, the same reference numerals are given to the same parts as those of the embodiment shown in FIGS. 1 to 6 to clarify the configuration, and detailed description thereof is omitted.

  Although the best embodiment has been described in detail above, the present invention is not limited to such an embodiment, and the detailed configuration, shape, quantity, numerical value, and the like do not depart from the spirit of the present invention. It can be changed, added, or deleted arbitrarily.

  For example, although the case where at least the non-linear part Ue ... in the heat exchange pipe unit U is covered with the heat insulating blocks 11a, 11b formed by the heat insulating material M is shown, the heat exchange in which at least the non-linear part Ue ... is formed on the outer surface. You may cover with the heat-transfer auxiliary | assistant block 12a, 12b formed with the heat-transfer material S which has the heat-transfer property by which the surface is cooled or heated. It is desirable to use the same material as the heat transfer block 2 as the heat transfer material S. Further, as in the case of the heat insulating blocks 11a and 11b, the block halves 12au, 12ad, 12bu, and 12bd that are divided into upper and lower parts can be used (see FIG. 5). Therefore, the heat transfer auxiliary blocks 12 a and 12 b may be formed integrally with the heat transfer block 2 so that the entire heat exchange pipe unit U is embedded in the heat transfer block 2. As a result, the heat exchange area for the thermo modules 21u, 21d,... Shown in FIG. 5 can be expanded to the heat exchange surfaces of the heat transfer auxiliary blocks 12a, 12b, thereby preventing unnecessary heat dissipation (heat absorption) due to disturbance. In addition to being able to do so, it is possible to further increase the heat exchange capacity by increasing the heat exchange area. In addition, as the chemical solution L, various chemical solutions including the exemplified chemical solution L containing ammonium fluoride, hydrofluoric acid, and the like can be applied, and if necessary, the chemical solution L can be used as it is for a solution other than the chemical solution such as water.

The plane block diagram which fractured | ruptured a part of heat exchange pipe unit and the heat-transfer block in the heat exchanger for chemical | medical solutions which concerns on the best embodiment of this invention, A cross-sectional front view showing a heat exchange pipe unit and a heat transfer block in the chemical liquid heat exchange device, A partial cross-sectional plan view of a heat exchange tube unit in the chemical liquid heat exchange device, The perspective view which shows the heat-transfer block half body in the heat exchanger for chemical | medical solutions, External side view showing the whole of the chemical liquid heat exchange device, A plan view showing the whole of the chemical liquid heat exchange device, The front view of the principal part of the heat exchanger for chemicals concerning the change embodiment of the present invention, The top view of the principal part of the heat exchanger for chemical | medical solutions which concerns on the modified embodiment of this invention,

  1: Heat exchange device for chemical liquid, 2: Heat transfer block, 3: Heat exchange pipe, 11a: Heat insulation block, 11b: Heat insulation block, 12a: Heat transfer auxiliary block, 12b: Heat transfer auxiliary block, 13: Liquid feed pump, 21u ...: Thermo module, 21d ...: Thermo module, 22u: Cooling unit, 22d: Cooling unit, 31 ...: Pressure unit, Cu: Heat exchange surface, Cd: Heat exchange surface, Cue: Heat exchange surface, Cde: Heat Exchange surface, L: Chemical solution, F: Fluoro resin material, Rg: Distribution channel, U: Heat exchange pipe unit, Ue ...: Non-linear part of heat exchange pipe unit, M: Heat insulating material, S: Heat transfer material

Claims (4)

  A heat exchange block formed of a heat transfer material having a heat transfer property that cools or heats the heat exchange surface formed on the outer surface, and heat exchange that exchanges heat with a chemical solution embedded in the heat transfer block and circulating inside In a heat exchange device for chemicals comprising a tube, a heat exchange tube unit provided with a zigzag flow path by sequentially bending a heat exchange tube formed of a fluorine-based resin material at predetermined intervals, and the heat exchange tube unit The heat transfer block partially or wholly embedded therein, a thermo module attached to the heat exchange surface of the heat transfer block, a cooling unit attached to the heat radiating surface of the thermo module, and the heat transfer to the thermo module A plurality of pressurizing units using springs and bolts and nuts, which are arranged to be pressurized by a block and the cooling unit and which regulate the end side of the thermo module; Chemical heat exchange apparatus characterized by including the.   The chemical heat exchanger according to claim 1, wherein at least the non-linear portion in the heat exchange pipe unit is covered with a heat insulating block formed of a heat insulating material having heat insulating properties.   The at least non-linear part in the said heat exchange pipe unit is covered with the heat-transfer auxiliary | assistant block formed with the heat-transfer material which has the heat-transfer property in which the heat exchange surface formed in the outer surface is cooled or heated. Heat exchanger for chemicals.   Heat for a chemical solution provided with a heat transfer block having a heat transfer property in which a heat exchange surface formed on the outer surface is cooled or heated, and a heat exchange pipe that is embedded in the heat transfer block and performs heat exchange with the chemical solution flowing inside. In an exchange device, a heat exchange pipe unit formed with a zigzag flow path by sequentially bending a heat exchange pipe formed of a fluorine resin material at predetermined intervals, and a part or all of the heat exchange pipe unit The heat transfer block embedded in the heat transfer block, a thermo module attached to the heat exchange surface of the heat transfer block, a cooling unit attached to the heat dissipation surface of the thermo module, and the thermo module by the heat transfer block and the cooling unit A plurality of pressurizing parts using springs and bolts and nuts arranged at positions where pressure is applied and the end of the thermo module is regulated; and the heat exchange pipe unit. Of was connected to the upstream side, the chemical liquid heat exchanger apparatus characterized in that it comprises a liquid feed pump for circulating the chemical solution, the.

Images