JP2017078531A - Heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanger that can adjust heat exchange amount between a heat transfer section and liquid stored in a container.SOLUTION: A heat exchanger 100 includes: a container 10 in which a storage section 18 for storing drain is provided; a heat transfer pipe 3 accommodated in the container 10 and exchanging heat at least with the drain stored in the storage section 18; an atmosphere release pipe 15 that is at least partially disposed in the storage section 18 and has an inner space 15a opened in the outer direction of the container 10 and a communication port 15b for communicating the inner space 15a with the storage section 18; an overflow pipe 16 that is at least partially disposed in the inner space 15a of the atmosphere release pipe 15 and has a discharge port 16a formed at a position higher than the communication port 15b to discharge liquid; and an adjustment section for adjusting a liquid level of the storage section 18 between the communication port 15b and the discharge port 16a.SELECTED DRAWING: Figure 1

Description

  The technology disclosed herein relates to a heat exchanger that exchanges heat with a fluid.

  For example, the heat exchanger described in Patent Document 1 includes a steam supply pipe that supplies steam and a cooling fluid pipe that serves as a heat transfer section that exchanges heat with the steam. A cooling fluid flows through the cooling fluid pipe. The steam supplied from the steam supply pipe is cooled by exchanging heat with the cooling fluid pipe. At this time, a part of the cooled vapor is condensed into a liquid and stored in the lower part of the container. The lower part of the cooling fluid pipe is immersed in the liquid stored in the container and exchanges heat with the liquid.

JP 2010-117106 A

  As described above, some heat exchangers exchange heat with the liquid stored in the container. The amount of heat exchange between the heat transfer section and the liquid may be desired to be increased or decreased depending on the system in which the heat exchanger is incorporated and the usage status of the system. The amount of heat exchange between the heat transfer unit and the liquid depends at least on the area of the heat transfer unit immersed in the liquid.

  However, in the heat exchanger of patent document 1, since the volume of the liquid which can be stored is constant, the maximum value of the area of the heat transfer part immersed in the liquid is also constant.

  The technology disclosed herein has been made in view of the above points, and the object is to provide a heat exchanger capable of adjusting the amount of heat exchange between the heat transfer section and the liquid stored in the container. Is to provide.

  The heat exchanger disclosed herein includes a container provided with a storage part for storing a liquid, a heat transfer part accommodated in the container and performing heat exchange with at least the liquid stored in the storage part, and at least A part of the open pipe that is disposed in the storage part, an internal space is open to the outside of the container, and has a communication port for communicating the internal space and the storage part; and at least a part of the open pipe And an overflow pipe formed at a position higher than the communication port and having a discharge port for discharging liquid, and a liquid level of the storage portion between the communication port and the discharge port. And an adjusting unit for adjusting at.

  According to the heat exchanger, the amount of heat exchange between the heat transfer section and the liquid stored in the container can be adjusted.

FIG. 1 is a schematic longitudinal sectional view of a heat exchanger according to the first embodiment. FIG. 2 is a schematic longitudinal sectional view of the heat exchanger according to the second embodiment.

  Hereinafter, exemplary embodiments will be described in detail with reference to the drawings.

Embodiment 1
FIG. 1 is a schematic longitudinal sectional view of a heat exchanger 100 according to the first embodiment.

  The heat exchanger 100 includes a container 10, a steam supply unit 2 that supplies steam into the container 10, a heat transfer tube 3 that is accommodated in the container 10, in which cooling water flows and exchanges heat with steam. It has. The heat exchanger 100 exchanges heat between the steam and the cooling water, cools the steam, and recovers the heat of the steam as hot water.

  The container 10 has a peripheral wall 11 formed in a cylindrical shape, a ceiling portion 12, and a bottom portion 13. The lower part of the container 10 serves as a storage part 18 for storing a drain produced by condensation of steam. A discharge pipe 14 that discharges a liquid such as drain accumulated in the storage unit 18 is connected to the bottom 13.

  At the center of the container 10, an air release pipe 15 extending along the axis of the container 10 is provided. The upper portion of the atmosphere release pipe 15 extends through the ceiling portion 12 to the outside of the container 10. The internal space 15a of the atmosphere release pipe 15 is open to the outside of the container 10, that is, to the atmosphere. The lower part of the air release pipe 15 is disposed in the storage unit 18 and is immersed in the drain stored in the storage unit 18. A communication port 15 b that allows the internal space 15 a and the storage portion 18 to communicate with each other is formed in the lower portion of the atmosphere release pipe 15. The communication port 15 b is formed so as to penetrate the tube wall of the atmosphere release tube 15. Note that the lower end of the air release pipe 15 is fixed to the bottom 13 of the container 10 although illustration is omitted. The atmosphere open pipe 15 is an example of an open pipe.

  In addition, an overflow pipe 16 is provided at the bottom 13 of the container 10 to discharge the drain accumulated in the container 10. The overflow pipe 16 passes through the bottom portion 13 and extends along the axis of the container 10. The overflow pipe 16 has a smaller diameter than the atmosphere release pipe 15 and enters the atmosphere release pipe 15 from the lower end of the atmosphere release pipe 15. That is, the upper part of the overflow pipe 16 is disposed in the internal space 15 a of the atmosphere release pipe 15. A discharge port 16 a for discharging drain is formed at the upper end of the overflow pipe 16. The discharge port 16 a is located at a position higher than the communication port 15 b of the atmosphere release pipe 15. Part of the drain that has entered the internal space 15a from the reservoir 18 through the communication port 15b can be discharged from the discharge port 16a. An overflow discharge pipe 17 is connected to the lower end of the overflow pipe 16.

  Drain is accumulated in the reservoir 18. The drain accumulated in the storage unit 18 is normally discharged through the discharge pipe 14, but the amount of drain exceeding the upper end of the overflow pipe 16 is discharged to the overflow discharge pipe 17 through the overflow pipe 16.

  The steam supply unit 2 is provided in a relatively upper part of the container 10. A steam supply pipe 22 is connected to the steam supply unit 2. The steam supply pipe 22 is connected to, for example, an outlet side of a steam using device or a drain tank, and steam is supplied. The steam supply unit 2 is an example of a supply unit, and steam is an example of a fluid.

  The heat transfer tube 3 is formed in a coil shape so as to circulate around the atmosphere opening tube 15. A cooling water supply pipe 31 is connected to the lower end of the heat transfer pipe 3, and a cooling water discharge pipe 32 is connected to the upper end of the heat transfer pipe 3. The cooling water supplied from the cooling water supply pipe 31 flows through the heat transfer pipe 3 and is discharged from the cooling water discharge pipe 32. The cooling water recovers heat from the steam by exchanging heat with the steam when flowing through the heat transfer tube 3.

  The lower part of the heat transfer tube 3 is disposed at a position soaking in the drain stored in the storage unit 18. That is, the heat transfer tube 3 also performs heat exchange with the drain stored in the storage unit 18. The heat transfer tube 3 is an example of a heat transfer unit, and the cooling water is an example of a heat medium.

  The discharge pipe 14 includes a portion having a predetermined water head from the bottom 13 of the container 10 and is configured to be able to adjust the water head. Specifically, the discharge pipe 14 includes a common pipe 14d connected to the container 10, a first discharge pipe 14a, a second discharge pipe 14b, and a third discharge pipe branched from the common pipe 14d and arranged at different heights. 14c. The common pipe 14d extends downward from the bottom 13 of the container 10, then bends and extends in the horizontal direction, and further bends and extends upward. The 1st discharge pipe 14a, the 2nd discharge pipe 14b, and the 3rd discharge pipe 14c branch from the part extended upwards among the common pipes 14d, and are extended in the horizontal direction. The first discharge pipe 14a is disposed at the lowest position, the third discharge pipe 14c is disposed at the highest position, and the second discharge pipe 14b is at a height between the first discharge pipe 14a and the third discharge pipe 14c. Has been placed. The first discharge pipe 14a is located at a position higher than the communication port 15b. The third discharge pipe 14c is located at a position lower than the discharge port 16a. The 1st discharge pipe 14a, the 2nd discharge pipe 14b, and the 3rd discharge pipe 14c are equivalent to the part which has the above-mentioned predetermined head.

  The first discharge pipe 14a is provided with a first valve 14e for switching communication / blocking of the first discharge pipe 14a. The second discharge pipe 14b is provided with a second valve 14f for switching communication / blocking of the second discharge pipe 14b. The third discharge pipe 14c is provided with a third valve 14g for switching communication / blocking of the third discharge pipe 14c.

  The first discharge pipe 14a, the second discharge pipe 14b, the third discharge pipe 14c, the first valve 14e, the second valve 14f, and the third valve 14g are arranged so that the liquid level of the storage portion 18 is communicated with the communication port 15b and the discharge port 16a. The adjustment part which adjusts between is comprised. Specifically, the liquid level of the reservoir 18 is adjusted depending on which of the first valve 14e, the second valve 14f, and the third valve 14g is opened. In the storage unit 18, the drain can be stored up to substantially the same height as the communicating discharge pipe among the first discharge pipe 14 a, the second discharge pipe 14 b and the third discharge pipe 14 c. That is, by switching the opening and closing of the first valve 14e, the second valve 14f, and the third valve 14g, the capacity of the drain that can be stored in the storage unit 18 (hereinafter referred to as “capacity of the storage unit 18”) can be adjusted. it can.

  The first discharge pipe 14a, the second discharge pipe 14b, and the third discharge pipe 14c are examples of a plurality of discharge pipes, and the first valve 14e, the second valve 14f, and the third valve 14g are examples of a switching unit. It is.

  Operation | movement of the heat exchanger 100 comprised in this way is demonstrated.

  In the heat transfer pipe 3, cooling water flows from the cooling water supply pipe 31 toward the cooling water discharge pipe 32. On the other hand, steam is supplied into the container 10 from the steam supply unit 2. The steam supplied into the container 10 is cooled and condensed by the heat transfer tube 3 to become drain. At this time, the heat of the steam is transmitted to the cooling water through the heat transfer tube 3 and is recovered by the cooling water.

  The drain adheres to the surface of the heat transfer tube 3, travels along the surface of the heat transfer tube 3, or drops from the surface of the heat transfer tube 3, and accumulates in the storage unit 18 of the container 10. The lower part of the heat transfer tube 3 is immersed in the drain of the storage unit 18. Therefore, the heat transfer tube 3 also exchanges heat with the drain of the storage unit 18. Thereby, the sensible heat of the drain is also recovered by the cooling water.

  Thus, the cooling water discharged from the cooling water discharge pipe 32 becomes warm water. The hot water discharged from the cooling water discharge pipe 32 can then be used for various purposes.

  The drain accumulated in the storage unit 18 also enters the internal space 15a of the atmosphere release pipe 15 through the communication port 15b. A space 10a outside the atmospheric open pipe 15 in the container 10 and above the drain (hereinafter referred to as “upper space”) 10a is water-sealed by the drain that has entered the atmospheric open pipe 15, and It is blocked from the internal space 15a. Thus, heat exchange can be performed between the steam and the heat transfer tube 3 in the upper space 10 a that is blocked from the outside of the container 10.

  When the pressure in the upper space 10a is increased by the steam supplied into the container 10, the liquid level of the drain outside the atmosphere release pipe 15 is pushed down, while the pushed down drain enters the atmosphere release pipe 15 and the internal space. The liquid level of the drain in 15a rises. When the drain liquid level in the internal space 15a reaches the height of the discharge port 16a, the drain is discharged from the discharge port 16a. When the liquid level of the drain outside the atmosphere opening pipe 15 is further pushed down and reaches the vicinity of the end of the communication port 15b, the upper space 10a and the inner space 15a communicate with each other, and the vapor or air in the upper space 10a It is discharged out of the container 10 through the open tube 15.

  Here, in the storage unit 18, drainage can be accumulated up to substantially the same height as the communicating exhaust pipe among the first exhaust pipe 14 a, the second exhaust pipe 14 b, and the third exhaust pipe 14 c. Excess drain is discharged through the discharge pipe 14. That is, the capacity | capacitance of the storage part 18 is adjusted by switching the discharge pipe connected among the 1st discharge pipe 14a, the 2nd discharge pipe 14b, and the 3rd discharge pipe 14c. The capacity of the storage unit 18 affects the amount of heat exchange between the heat transfer tube 3 and the drain.

  For example, by opening the first valve 14e, the liquid level of the drain that can be stored in the storage unit 18 becomes substantially the same height as the first discharge pipe 14a (see the two-dot chain line in FIG. 1). Thereby, the area of the part immersed in drain among the heat exchanger tubes 3 reduces, and the heat exchange amount of the heat exchanger tubes 3 and drain falls. On the other hand, since the upper space 10a is enlarged in the container 10, the area of the heat transfer tube 3 in contact with the steam increases, and the amount of heat exchange between the heat transfer tube 3 and the steam increases.

  Alternatively, by closing the first valve 14e and opening the second valve 14f, the liquid level of the drain that can be stored in the storage unit 18 becomes substantially the same height as the second discharge pipe 14b (see the solid line in FIG. 1). . Thereby, the area of the part immersed in drain among the heat exchanger tubes 3 increases, and the heat exchange amount of the heat exchanger tubes 3 and drain rises. On the other hand, since the upper space 10a is reduced in the container 10, the area of the heat transfer tube 3 in contact with the steam is reduced, and the heat exchange amount between the heat transfer tube 3 and the steam is reduced.

  Further, by closing the first valve 14e and the second valve 14f and opening the third valve 14g, the liquid level of the drain that can be stored in the storage unit 18 becomes substantially the same height as the third discharge pipe 14c (FIG. 1 dash-dot line). Thereby, the area of the part immersed in drain among the heat exchanger tubes 3 further increases, and the amount of heat exchange between the heat exchanger tubes 3 and the drain further increases. On the other hand, since the upper space 10a is further reduced in the container 10, the area of the heat transfer tube 3 in contact with the steam is further reduced, and the amount of heat exchange between the heat transfer tube 3 and the steam is further reduced.

  In this way, by switching the opening and closing of the first valve 14e, the second valve 14f, and the third valve 14g, the capacity of the storage unit 18 is adjusted, and the amount of heat exchange between the heat transfer tube 3 and the drain is adjusted. Can do. For example, the ratio of the portion that exchanges heat with the steam and the portion that exchanges heat with the drain in the heat transfer tube 3 can vary depending on the system in which the heat exchanger 100 is incorporated or the usage status of the system. Therefore, the opening and closing of the first valve 14e, the second valve 14f, and the third valve 14g is changed according to the system in which the heat exchanger 100 is incorporated or the usage status of the system. Thereby, the ratio of the part heat-exchanged with the steam and the part heat-exchanged with the drain among the heat exchanger tubes 3 can be adapted to the system or the usage status of the system.

  Here, by arranging the first discharge rod 14a at a position higher than the communication port 15b, a water seal in the atmosphere open pipe 15 can be secured. That is, when the first discharge rod 14a is lower than the communication port 15b, the drain of the storage unit 18 is accumulated only up to a position lower than the communication port 15b. Therefore, the drain in the atmosphere release rod 15 is more than the communication port 15b. Does not reach upwards. Therefore, the communication port 15b cannot be sealed with water, and the upper space 10a communicates with the internal space 15a of the atmosphere release rod 15. On the other hand, when the 1st discharge rod 14a is arrange | positioned in the position higher than the communication port 15b, the drain of the storage part 18 can accumulate to a position higher than the communication port 15b. Thereby, the communication port 15b can be water-sealed, and the upper space 10a and the internal space 15a of the atmosphere release rod 15 can be shut off.

  Further, by disposing the third discharge rod 14c at a position lower than the discharge port 16a, the drain of the reservoir 18 can be stored up to substantially the same height as the third discharge rod 14c. If the discharge port 16a is lower than the third discharge rod 14c, the drain of the storage unit 18 is discharged from the discharge port 16a before reaching substantially the same height as the third discharge rod 14c. That is, the capacity | capacitance of the storage part 18 is decided by the height of the discharge port 16a, and cannot collect a drain to the position corresponding to the 3rd discharge rod 14c. On the other hand, by arranging the third discharge rod 14c at a position lower than the discharge port 16a, the drain of the storage unit 18 can be accumulated to substantially the same height as the third discharge rod 14c.

  As described above, the heat exchanger 100 exchanges heat with the container 10 provided with the storage unit 18 for storing drain (liquid) and the drain stored in the container 10 and stored at least in the storage unit 18. The heat transfer tube 3 (heat transfer part) and at least a part thereof are disposed in the storage part 18, the internal space 15 a is open to the outside of the container 10, and the communication port 15 b that allows the internal space 15 a and the storage part 18 to communicate with each other. The atmosphere opening pipe 15 (open pipe) having at least a part thereof is disposed in the internal space 15a of the atmosphere opening pipe 15, and is formed at a position higher than the communication port 15b. An overflow pipe 16 having a discharge port 16a that discharges a part of the liquid that has entered the internal space 15a, and an adjustment unit that adjusts the liquid level of the storage unit 18 between the communication port 15b and the discharge port 16a. Have

  According to this configuration, the overflow pipe 16 having the atmosphere opening pipe 15 having the communication opening 15 b and the discharge opening 16 a formed at a position higher than the communication opening 15 b and disposed in the internal space 15 a of the atmosphere opening pipe 15. Thus, drain can enter between the communication port 15b and the discharge port 16a in the internal space 15a of the atmosphere release pipe 15, and the communication port 15b can be sealed with water. Thereby, upper space 10a is interrupted | blocked with internal space 15a, and heat exchange can be performed with the heat exchanger tube 3 and a vapor | steam in that state. However, if the pressure in the upper space 10a becomes too high, the drain liquid level outside the atmosphere opening pipe 15 decreases and the water seal of the communication port 15b is released, so the pressure in the container 10 increases. It is prevented from passing.

  In addition, the liquid level in the storage unit 18 is adjusted by the adjustment unit. When the liquid level in the storage unit 18 changes, the area of the heat transfer tube 3 that is immersed in the drain changes, and the amount of heat exchange between the heat transfer tube 3 and the drain changes. In other words, the amount of heat exchange between the heat transfer tube 3 and the drain is adjusted by the adjustment unit. At this time, since the liquid level of the storage part 18 is adjusted between the communication port 15b and the discharge port 16a, the above-mentioned water sealing function is maintained.

  Therefore, according to the heat exchanger 100, the heat exchange amount between the heat transfer tube 3 and the drain can be adjusted while maintaining the water sealing function.

  Specifically, the adjustment unit includes a first discharge pipe 14a, a second discharge pipe 14b and a third discharge pipe 14c (a plurality of discharge pipes) that discharge the drain stored in the storage unit 18, and a first discharge pipe 14a. The first valve 14e, the second valve 14f, and the third valve 14g (switching unit) that switch the discharge pipe to be communicated among the second discharge pipe 14b and the third discharge pipe 14c. The first discharge pipe 14a, the second discharge pipe 14b, and the third discharge pipe 14c are arranged at different heights, and the liquid level of the storage unit 18 is set to the first discharge pipe 14a, the second discharge pipe 14b, and the third discharge pipe. The exhaust pipe to be communicated among the pipes 14c is adjusted by switching with the first valve 14e, the second valve 14f, and the third valve 14g.

  According to this structure, the capacity | capacitance of the storage part 18 can be adjusted by simple operation of switching opening and closing of the 1st valve | bulb 14e, the 2nd valve | bulb 14f, and the 3rd valve | bulb 14g.

<< Embodiment 2 >>
Next, the heat exchanger 200 according to Embodiment 2 will be described.

  The heat exchanger 200 is different from the heat exchanger 100 in the method of adjusting the liquid level in the storage unit 18. Therefore, in the heat exchanger 200, the same components as those of the heat exchanger 100 are denoted by the same reference numerals and description thereof will be omitted, and description will be made focusing on portions different from the heat exchanger 100.

  FIG. 2 is a schematic longitudinal sectional view of the heat exchanger 200 according to the second embodiment.

  The heat exchanger 200 includes a container 10, a steam supply unit 2 that supplies steam into the container 10, a heat transfer tube 3 that is accommodated in the container 10, in which cooling water circulates, and exchanges heat with the steam. It has.

  The container 10 is provided with a liquid level sensor 41 that detects the liquid level of the storage unit 18. Further, a discharge pipe 214 that discharges a liquid such as drain accumulated in the storage section 18 is connected to the bottom portion 13 of the vessel 10.

  The exhaust pipe 214 does not include the first exhaust pipe 14a, the second exhaust pipe 14b, and the third exhaust pipe 14c as in the heat exchanger 100. The discharge pipe 214 is provided with an adjustment valve 14 h that adjusts the flow rate of drain or the like flowing through the discharge pipe 214. The adjustment valve 14h is controlled by the control unit 40. The adjustment valve 14h is an example of a flow rate control unit.

  The control unit 40 is configured by a processor, and receives a detection signal from the liquid level sensor 41. The control unit 40 adjusts the opening of the adjustment valve 14h so that the liquid level in the storage unit 18 obtained from the detection result of the liquid level sensor 41 becomes a target value. Specifically, the target value of the liquid level is set in advance by the user. For example, the target value is set based on the desired heat exchange amount between the heat transfer tube 3 and the drain. When the opening degree of the adjusting valve 14h is reduced, the flow rate of the discharge pipe 214 is decreased, and the amount of drain discharged from the container 10 is decreased. As a result, the liquid level in the storage unit 18 rises. On the contrary, when the opening degree of the adjusting valve 14h is opened, the flow rate of the discharge pipe 214 increases and the amount of drain discharged from the container 10 increases. As a result, the liquid level of the storage part 18 falls. The control unit 40 adjusts the liquid level in the storage unit 18 between the communication port 15b and the discharge port 16a so as to be a target value.

  As described above, the heat exchanger 200 serves as the adjusting unit, and the discharge pipe 214 that discharges the liquid stored in the storage unit 18 and the adjustment valve 14h that controls the flow rate of the liquid flowing through the discharge pipe 214 (flow rate control). The liquid level of the reservoir 18 is adjusted by controlling the flow rate of the liquid flowing through the discharge pipe 214 by the adjusting valve 14h.

  According to this configuration, the capacity of the storage unit 18 is adjusted by adjusting the flow rate of the discharge pipe 21. Thereby, the amount of heat exchange between the heat transfer tube 3 and the drain is adjusted. Since the capacity | capacitance of the storage part 18 is adjusted with the opening degree of the adjustment valve 14h, it can be adjusted more flexibly. At this time, since the liquid level of the storage part 18 is adjusted between the communication port 15b and the discharge port 16a, the above-mentioned water sealing function is maintained.

<< Other Embodiments >>
As described above, the embodiment has been described as an example of the technique disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can also be applied to an embodiment in which changes, replacements, additions, omissions, and the like are appropriately performed. Moreover, it is also possible to combine each component demonstrated by the said embodiment and it can also be set as a new embodiment. In addition, among the components described in the attached drawings and detailed description, not only the components essential for solving the problem, but also the components not essential for solving the problem in order to illustrate the technology. May also be included. Therefore, it should not be immediately recognized that these non-essential components are essential as those non-essential components are described in the accompanying drawings and detailed description.

  For example, the configuration of each element of the heat exchanger 100 is merely an example, and various configurations can be employed.

  The heat exchanger 100 employs the heat transfer tube 3 as a heat transfer unit, but is not limited thereto. The heat transfer tube 3 may not be coiled. Further, the heat transfer tube 3 may be a fin tube type. Furthermore, the heat transfer unit may be a heat sink or the like.

  The heat exchange 100 is configured to recover the heat of the steam, but the target for heat exchange is not limited to steam. For example, the heat exchanger may be configured to recover heat by exchanging heat with a liquid such as water. In that case, the steam supply unit 2 is replaced with a water (liquid) supply unit. The container 10 is supplied with relatively high temperature water. The hot water and the heat transfer tube 3 exchange heat, and the heat is recovered in the cooling water. The water supplied into the container 10 is stored in the storage unit 18 and discharged through the discharge pipe 14, the discharge pipe 214, or the overflow pipe 16.

  The discharge pipe 14 includes a plurality of discharge pipes having different heights (specifically, the first discharge pipe 14a, the second discharge pipe 14b, and the third discharge pipe 14c). Is not limited to three. The plurality of discharge pipes having different heights may be two or four. The first discharge pipe 14a, the second discharge pipe 14b, and the third discharge pipe 14c, which are a plurality of discharge pipes, are branched from one common pipe 14d, but the first discharge pipe 14a and the second discharge pipe Each of 14b and the third discharge pipe 14c may be directly connected to the container 10.

  The communication port 15b of the atmosphere release pipe 15 is formed so as to penetrate the tube wall of the atmosphere release pipe 15, but the opening at the lower end of the atmosphere release pipe 15 may be used as the communication port.

  As described above, the technique disclosed herein is useful for a heat exchanger that exchanges heat with a fluid.

100 heat exchanger 10 container 14 discharge pipe 14a first discharge pipe (adjustment part)
14b 2nd discharge pipe (adjustment part)
14c 3rd discharge pipe (adjustment part)
14e 1st valve (adjustment part, switching part)
14f Second valve (adjustment unit, switching unit)
14g 3rd valve (adjusting part, switching part)
15 Open air pipe (open pipe)
15a Internal space 15b Communication port 16 Overflow pipe 16a Discharge port 18 Storage part 3 Heat transfer pipe (heat transfer part)
214 Discharge pipe (adjustment part)
14h Adjustment valve (Adjustment unit, flow control unit)

Claims (3)

A container provided with a reservoir for storing liquid;
A heat transfer section that is accommodated in the container and performs heat exchange with at least the liquid stored in the storage section;
An open pipe having at least a part disposed in the storage part, an internal space being open to the outside of the container, and a communication port for communicating the internal space and the storage part;
An overflow pipe having at least a part disposed in the internal space of the open pipe and having a discharge port formed at a position higher than the communication port to discharge the liquid;
The heat exchanger characterized by including the adjustment part which adjusts the liquid level of the said storage part between the said communicating port and the said discharge port. The heat exchanger according to claim 1,
The adjustment unit is a plurality of discharge pipes that discharge the liquid stored in the storage unit, and a switching unit that switches a discharge pipe to be communicated among the plurality of discharge pipes.
The plurality of discharge pipes are arranged at different heights,
The heat level of the storage section is adjusted by switching the discharge pipe to be communicated among the plurality of discharge pipes by using the switching section. The heat exchanger according to claim 1,
The adjustment unit is a discharge pipe that discharges the liquid stored in the storage unit, and a flow rate control unit that controls a flow rate of the liquid flowing through the discharge pipe,
The liquid level in the storage unit is adjusted by controlling the flow rate of the liquid flowing through the discharge pipe by the flow rate adjusting unit.

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