WO2018061551A1 - Equipment temperature adjusting apparatus - Google Patents

Abstract

This equipment temperature adjusting apparatus comprises a working fluid circuit (10) and a fragmentation structure (20). The working fluid circuit constitutes a thermosiphon heat pipe. The working fluid circuit has an evaporator (12) that evaporates the working fluid using the heat absorbed from equipment (BP) and a condenser (14) that cools and condenses the working fluid evaporated by the evaporator. In the working fluid circuit, the working fluid moves between the evaporator and the condenser. The fragmentation structure is provided within the working fluid circuit. The fragmentation structure fragments the bubbles in the working fluid in liquid form.

Description

Equipment temperature controller Cross-reference to related applications

This application is based on Japanese Patent Application No. 2016-193341 filed on September 30, 2016, the description of which is incorporated herein by reference.

This disclosure relates to a device temperature control device that adjusts the temperature of a device.

As a device temperature control device, Patent Document 1 discloses a temperature control device that adjusts the temperature of a battery mounted on a vehicle. This temperature control device includes a circuit of a working fluid constituting a loop type thermosiphon heat pipe. This circuit includes an evaporating unit in which the working fluid evaporates due to heat absorption from the battery, and a condensing unit in which the working fluid evaporated in the evaporating unit is cooled and condensed. Further, this circuit includes a gas passage portion in which a gaseous working fluid flows from the evaporation portion toward the condensation portion, and a liquid passage portion in which a liquid working fluid flows from the condensation portion toward the evaporation portion.

JP 2015-41418 A

By the way, when the liquid working fluid evaporates inside the evaporation section, bubbles are generated inside the liquid working fluid. When the bubbles are large, the bubbles rise in the gas passage portion or the liquid passage portion while pushing up the liquid working fluid. For this reason, the bubbles burst while the liquid working fluid is blown up. At this time, the present inventor has found a problem that a large noise is generated.

This disclosure is intended to provide a device temperature control device that can reduce abnormal noise caused by blowing up a liquid working fluid by bubbles and bursting the bubbles.

According to one aspect of the present disclosure, an apparatus temperature control device is provided in a working fluid circuit constituting a thermosiphon heat pipe and the working fluid circuit, and subdivides bubbles in the liquid working fluid. A subdivided structure. The working fluid circuit includes an evaporating unit in which the working fluid evaporates due to heat absorption from the device, and a condensing unit in which the working fluid evaporated in the evaporating unit is cooled and condensed. In the working fluid circuit, the working fluid moves between the evaporation unit and the condensation unit.

According to this, the bubbles in the liquid working fluid can be subdivided by the subdivided structure. For this reason, compared with the case where the subdivided structure is not provided, it is possible to reduce noise generated by blowing up the liquid working fluid by the bubbles and bursting the bubbles.

It is sectional drawing of the fluid circuit for apparatuses of the apparatus temperature control apparatus in 1st Embodiment. It is an enlarged view of the heat exchanger for apparatuses in FIG. 1, and a gas channel | path part. It is a top view of the subdivision structure in a 1st embodiment. It is a side view of the subdivision structure in a 1st embodiment. FIG. 5 is a sectional view taken along line VV in FIG. 3. It is an enlarged view of the housing part in 1st Embodiment. It is an enlarged view of the housing | casing part in the modification of 1st Embodiment. It is sectional drawing which shows a part of apparatus fluid circuit of the apparatus temperature control apparatus of the comparative example 1, and is sectional drawing corresponding to FIG. It is a side view of the subdivision structure in a 2nd embodiment. It is sectional drawing of the subdivision structure in 2nd Embodiment, and is sectional drawing corresponding to FIG. It is a side view of the subdivision structure in a 3rd embodiment. It is sectional drawing of the subdivision structure in 3rd Embodiment, and is sectional drawing corresponding to FIG. It is an enlarged view of the equipment heat exchanger and liquid passage part of the fluid circuit for equipment in a 4th embodiment. It is sectional drawing of the subdivision structure in other embodiment, and is sectional drawing corresponding to FIG. It is sectional drawing of the subdivision structure in other embodiment, and is sectional drawing corresponding to FIG. It is sectional drawing of the subdivision structure in other embodiment, and is sectional drawing corresponding to FIG. It is a side view of the subdivision structure in other embodiments. It is sectional drawing of the subdivision structure of FIG. 18, and is sectional drawing corresponding to FIG. It is an enlarged view of the housing | casing part in other embodiment.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In the following embodiments, parts that are the same or equivalent to each other will be described with the same reference numerals.

(First embodiment)
The whole structure of the apparatus temperature control apparatus 1 of this embodiment shown in FIG. 1 is demonstrated. The apparatus temperature control apparatus 1 of this embodiment adjusts the battery temperature of the assembled battery BP as a temperature adjustment object apparatus by cooling the assembled battery BP mounted in the vehicle. As a vehicle on which the device temperature control device 1 is mounted, an electric vehicle or a hybrid vehicle that can be driven by a traveling electric motor (not shown) that uses the assembled battery BP as a power source is assumed.

The assembled battery BP is composed of a stacked body in which a plurality of rectangular parallelepiped battery cells BC are stacked. The plurality of battery cells BC constituting the assembled battery BP are electrically connected in series. Each battery cell BC constituting the assembled battery BP is configured by a chargeable / dischargeable secondary battery (for example, a lithium ion battery or a lead storage battery). The battery cell BC is not limited to a rectangular parallelepiped shape, and may have another shape such as a cylindrical shape. The assembled battery BP may include a battery cell BC electrically connected in parallel.

The assembled battery BP is connected to a power converter and a motor generator (not shown). The power conversion device is a device that converts, for example, a direct current supplied from an assembled battery into an alternating current, and supplies (that is, discharges) the converted alternating current to various electric loads such as a traveling electric motor. The motor generator is a device that reversely converts the traveling energy of the vehicle into electric energy during regeneration of the vehicle and supplies the reversely converted electric energy as regenerative power to the assembled battery BP via an inverter or the like.

The assembled battery BP may become excessively hot due to self-heating when power is supplied while the vehicle is running. When the assembled battery BP becomes excessively high in temperature, not only the input / output characteristics of the assembled battery BP are deteriorated, but also the deterioration of the battery cell BC is promoted. Become.

In addition, the power storage device including the assembled battery BP is often disposed under the floor of the vehicle or under the trunk room, and the battery temperature of the assembled battery BP gradually increases not only when the vehicle is running but also during parking in summer. As a result, the battery temperature may become excessively high. If the battery pack BP is left in a high temperature environment, the battery life will be significantly reduced due to the progress of deterioration. Therefore, the battery temperature of the battery pack BP should be kept below a predetermined temperature even during parking of the vehicle. Is desired.

Further, the assembled battery BP is composed of a plurality of battery cells BC. However, if the temperature of each battery cell BC varies, the degree of progress of deterioration of each battery cell is biased, and the entire assembled battery is inserted. The output characteristics will deteriorate. This is because the assembled battery BP includes battery cells connected in series, so that the input / output characteristics of the entire assembled battery are determined according to the battery characteristics of the battery cell BC that has been most deteriorated among the battery cells BC. Because. For this reason, in order to make the assembled battery BP exhibit desired performance for a long period of time, it is important to equalize the temperature of the battery cells BC to reduce temperature variation.

As the cooling means for cooling the assembled battery BP, an air-cooling cooling means using a blower and a cooling means utilizing the cold heat of a vapor compression refrigeration cycle are generally used.

However, since the air-cooled cooling means using the blower only blows air or the like in the passenger compartment to the assembled battery, a cooling capacity sufficient to sufficiently cool the assembled battery BP may not be obtained.

Further, although the cooling means using the cold heat of the refrigeration cycle has a high cooling capacity of the assembled battery BP, it is necessary to drive a compressor or the like that consumes a large amount of power while the vehicle is parked. This is undesirable because it leads to an increase in power consumption and an increase in noise.

Therefore, the apparatus temperature control apparatus 1 of the present embodiment employs a thermosiphon system that adjusts the battery temperature of the assembled battery BP not by forced circulation of the refrigerant by the compressor but by natural circulation of the working fluid.

The device temperature control device 1 includes a device fluid circuit 10 as a working fluid circuit through which a working fluid circulates. As the working fluid circulating in the device fluid circuit 10, refrigerants (for example, R134a, R1234yf) used in a vapor compression refrigeration cycle are employed.

The fluid circuit for equipment 10 is a heat pipe that performs heat transfer by evaporation and condensation of the working fluid, and is configured to be a thermosiphon type in which the working fluid is naturally circulated by gravity. Furthermore, the fluid circuit for equipment 10 is configured to be a loop type in which a flow path through which a gaseous working fluid flows and a flow path through which a liquid working fluid flows are separated. That is, the fluid circuit for equipment 10 constitutes a loop-type thermosiphon heat pipe.

Specifically, the device fluid circuit 10 is formed by connecting a device heat exchanger 12, a condenser 14, a gas passage portion 16, and a liquid passage portion 18 to each other. Note that the arrow DRg shown in FIG. 1 indicates the direction in which the vertical line extends, that is, the vertical direction. The device fluid circuit 10 is a closed annular fluid circuit. A predetermined amount of working fluid is sealed inside the device fluid circuit 10.

The equipment heat exchanger 12 is a heat exchanger that functions as an evaporation section that absorbs heat from the assembled battery BP and evaporates the liquid working fluid when the assembled battery BP is cooled. The equipment heat exchanger 12 has a thin, rectangular parallelepiped shape. The equipment heat exchanger 12 is disposed at a position facing the bottom surface of the assembled battery BP. That is, the assembled battery BP is arranged on the upper surface of the equipment heat exchanger 12.

The equipment heat exchanger 12 is disposed below the condenser 14. As a result, the liquid working fluid accumulates in the lower portion of the equipment fluid circuit 10 including the equipment heat exchanger 12 by gravity.

The condenser 14 is a heat exchanger that functions as a condensing unit that condenses the gaseous working fluid evaporated in the equipment heat exchanger 12. The condenser 14 is an air-cooled condenser that cools the working fluid by heat exchange between air and the working fluid. The working fluid cooling method is not limited to the air cooling method. Other cooling methods may be employed.

The gas passage 16 guides the gaseous working fluid evaporated in the equipment heat exchanger 12 to the condenser 14. In other words, the gas passage portion 16 is a first flow path through which the working fluid flows from the equipment heat exchanger 12 as the evaporation portion toward the condenser 14 as the condensation portion. The gas passage portion 16 has a lower end connected to the equipment heat exchanger 12 and an upper end connected to the condenser 14. The gas passage part 16 of this embodiment is comprised by piping in which the flow path through which a working fluid distribute | circulates was formed.

The liquid passage portion 18 guides the liquid working fluid condensed in the condenser 14 to the equipment heat exchanger 12. In other words, the liquid passage portion 18 is a second flow path through which the working fluid flows from the condenser 14 as the condensing portion toward the equipment heat exchanger 12 as the evaporating portion. The liquid passage portion 18 has a lower end connected to the equipment heat exchanger 12 and an upper end connected to the condenser 14. The liquid passage portion 18 of the present embodiment is configured by a pipe in which a flow path through which a working fluid flows is formed.

Subsequently, the basic operation of the device temperature control apparatus 1 of the present embodiment will be described.

In the apparatus temperature control apparatus 1, when the battery temperature Tb of the assembled battery BP rises due to self-heating during traveling of the vehicle, the heat of the assembled battery BP moves to the apparatus heat exchanger 12. In the equipment heat exchanger 12, a part of the liquid working fluid WF evaporates by absorbing heat from the assembled battery BP. The assembled battery BP is cooled by the latent heat of vaporization of the working fluid WF existing inside the equipment heat exchanger BP, and the temperature thereof decreases.

The gaseous working fluid WF evaporated in the equipment heat exchanger 12 flows out from the equipment heat exchanger 12 to the gas passage section 16 and passes through the gas passage section 16 as shown by an arrow F11 in FIG. Move to condenser 14.

In the condenser 14, the gaseous working fluid WF condenses as the gaseous working fluid WF dissipates heat. The condensed liquid working fluid WF descends due to gravity. As a result, the liquid working fluid WF condensed in the condenser 14 flows out from the condenser 14 to the liquid passage portion 18, and as indicated by an arrow F12 in FIG. Move to 12. In the equipment heat exchanger 12, a part of the flowing liquid working fluid WF is evaporated by absorbing heat from the assembled battery BP.

As described above, the device temperature control apparatus 1 circulates between the device heat exchanger 12 and the condenser 14 while the working fluid WF changes between the gas state and the liquid state, and the device heat exchanger 12 The assembled battery BP is cooled by transporting heat to the condenser 14.

The equipment temperature control device 1 has a configuration in which the working fluid WF naturally circulates inside the equipment fluid circuit 10 without the driving force required for circulating the working fluid by a compressor or the like. For this reason, the apparatus temperature control apparatus 1 can implement | achieve the efficient temperature control of the assembled battery BP which suppressed both power consumption and noise compared with the refrigerating cycle etc.

Next, the characteristic part of the apparatus temperature control apparatus 1 of this embodiment is demonstrated.

As shown in FIG. 2, the apparatus temperature control apparatus 1 includes a subdivided structure 20 that subdivides the bubbles B1 in the liquid working fluid WF. The subdivided structure 20 is disposed inside the gas passage portion 16. In the present embodiment, when the assembled battery BP generates heat, a predetermined amount of the working fluid is supplied to the device fluid so that the surface LS of the liquid working fluid WF, that is, the liquid level LS is located inside the gas passage portion 16. The inside of the circuit 10 is enclosed.

As shown in FIGS. 3, 4, and 5, the subdivided structure 20 includes a housing part 22 and a floating structure part 24.

The housing portion 22 has a lattice structure in which a plurality of linear members 26 are arranged in a lattice shape. The casing 22 has a plurality of gaps 27 surrounded by a plurality of linear members 26.

As shown in FIG. 5, the casing 22 has a planar shape. That is, the inside of the housing part 22 is hollow, and the part on the surface side of the housing part 22 has a lattice structure.

As shown in FIG. 6, specifically, the casing portion 22 includes a plurality of first linear members 261 extending in one direction and a plurality of linear members 26 extending in a direction intersecting with one direction. The second linear member 262 is included. Each of the plurality of first linear members 261 is disposed in parallel with a space between each other. Each of the plurality of second linear members 262 is arranged in parallel with a space between each other. For this reason, the shape of one gap 27 is a square. The plurality of first linear members 261 and the plurality of second linear members 262 are combined and integrated at an intersecting portion 263 where both intersect.

As shown in FIG. 7, the plurality of first linear members 261 and the plurality of second linear members 262 may not be integrated at the intersection 263. That is, a plurality of first linear members 261 and a plurality of second linear members 262 may be knitted.

As described above, the housing portion 22 has a mesh-like structure having a plurality of meshes 27 by arranging a plurality of linear members 26 in a lattice pattern. Therefore, the housing part 22 constitutes a mesh-like structure part having a mesh-like structure.

As shown in FIGS. 3, 4, and 5, the levitation structure portion 24 is provided with respect to the housing portion 22. The floating structure unit 24 has a function of floating the subdivided structure 20 in a liquid working fluid. That is, the levitation structure unit 24 has a function of imparting a predetermined size of buoyancy to the subdivided structure 20.

The floating structure 24 has a cylindrical shape without a bottom. The levitation structure 24 has a flow path 24a for liquid and gaseous working fluid therein. The shape of the levitation structure portion 24 is a shape corresponding to the internal shape of the gas passage portion 16. In the present embodiment, the pipe constituting the gas passage portion 16 has a cylindrical shape. For this reason, the levitation structure 24 has a cylindrical shape. The outer diameter of the levitation structure portion 24 is smaller than the inner diameter of the pipe constituting the gas passage portion 16. For this reason, the subdivision structure 20 can be changed according to the liquid level change.

As shown in FIG. 5, the housing portion 22 has a passage portion 22 a through which liquid and gaseous working fluid passes and a fixing portion 22 b fixed to the floating structure portion 24. The fixing portion 22 b is fixed to the levitation structure portion 24 so that the passage portion 22 a is positioned above the levitation structure portion 24. Therefore, the housing portion 22 constitutes the top surface 20a of the subdivided structure 20. That is, the housing portion 22 is arranged at a position that constitutes the top surface 20 a of the subdivided structure 20 in the subdivided structure 20. As described above, the casing portion 22 is provided at a position where bubbles passing through the flow path 24 a can pass through the casing portion 22 with respect to the floating structure portion 24.

As shown in FIG. 2, the buoyancy of the levitation structure portion 24 is set so that the entire buoyancy portion 22 is positioned below the liquid level LS. In other words, the material part, the shape, the weight, and the like of the housing part 22 and the floating structure part 24 are set so that the whole housing part 22 is located below the liquid level LS. The casing 22 is made of, for example, a metal material. The levitation structure portion 24 is made of a material, for example, a resin material, having a density lower than that of the material constituting the housing portion 22 and lower than that of the liquid working fluid.

In addition, the shape of the housing portion 22 and the floating structure portion 24 is selected so that the subdivided structure body 20 rotates up and down and the subdivided structure body 20 does not collide with the inner wall of the pipe and generate noise. Yes. Further, the shape of the housing portion 22 and the floating structure portion 24 is selected so that bubbles do not pass through the housing portion 22 when the subdivided structure 20 rolls over and the housing portion 22 faces the inner wall of the pipe. Has been. Specifically, the outer diameter of the levitation structure portion 24 is made about 1 mm smaller than the pipe diameter. The height dimension of the levitation structure portion 24 is larger than the pipe diameter. Thereby, the subdivision structure 20 can be prevented from rotating up and down and rolling over in the pipe.

Next, the effect of the characteristic part of the device temperature control device 1 of the present embodiment will be described in comparison with Comparative Example 1.

As shown in FIG. 8, the device temperature control device J1 of Comparative Example 1 does not include the subdivided structure 20. Other configurations are the same as those of the present embodiment. In Comparative Example 1, bubbles generated inside the equipment heat exchanger 12 are combined to form a large bubble B1. When this large bubble B1 flows into the gas passage 16 from the equipment heat exchanger 12, the bubble B1 rises through the gas passage 16 while pushing up the liquid working fluid WF. For this reason, the liquid working fluid WF is blown up. Further, the bubble B1 bursts at the liquid level LS. At this time, a large noise is generated.

Here, in this embodiment and Comparative Example 1, the equipment heat exchanger 12 is disposed in contact with the bottom surface of the assembled battery BP. For this reason, the height of the equipment heat exchanger 12 is restricted by the size of the mounting location of the assembled battery BP and the equipment heat exchanger 12. Compared with the case where the equipment heat exchanger 12 is disposed in contact with the side surface of the assembled battery BP, the inside of the equipment heat exchanger 12 becomes narrower. When the inside of the equipment heat exchanger 12 is narrow, the bubbles B1 can easily push the liquid working fluid. Therefore, in Comparative Example 1, the above-described problem is likely to occur.

On the other hand, according to the present embodiment, as shown in FIG. 2, the bubbles B1 that have flowed into the gas passage portion 16 are subdivided by the subdivided structures 20 into small bubbles B2. Specifically, when the bubble B <b> 1 passes through the housing part 22, the bubble B <b> 1 hits the plurality of linear members 26. For this reason, the bubbles B1 larger than one gap 27 of the housing portion 22 are subdivided into bubbles B2 smaller than the gap 27.

Thus, according to the present embodiment, the large bubbles B1 in the liquid working fluid can be finely divided into small bubbles B2 before reaching the liquid level LS. For this reason, compared with the comparative example 1, the blowing-up of the liquid working fluid by a bubble can be suppressed. Compared with Comparative Example 1, since the bubbles are small, the burst sound of the bubbles at the liquid level LS can be reduced.

In the present embodiment, the subdivided structure 20 has a floating structure 24. Here, it is assumed that the subdivided structure 20 does not have the levitation structure portion 24 and is configured only by the housing portion 22. Furthermore, the case where this housing part 22 is fixed inside the gas passage part 16 is assumed. In this case, when the entire casing 22 is above the liquid level LS, the bubbles B1 cannot be subdivided by the casing 22. For this reason, the effect of this embodiment cannot be obtained.

On the other hand, according to the present embodiment, the position of the subdivided structure 20 can be changed by the floating structure 24 according to the change of the liquid level LS. That is, the buoyancy of the levitation structure portion 24 is set so that the entire housing portion 22 is positioned below the liquid level LS. Thus, the buoyancy of the levitation structure portion 24 is set so that the subdivided structure 20 is at a predetermined distance from the liquid level LS. For this reason, the passage part 22a of the housing part 22 can always be located below the liquid level. Thereby, the bubble which reaches | attains the liquid level LS by the housing part 22 can always be made small. Therefore, even if the liquid level LS fluctuates, the effect of the present embodiment can always be obtained.

(Second Embodiment)
This embodiment is different from the first embodiment in the structure of the subdivided structure 20. The other structure of the apparatus temperature control apparatus 1 is the same as 1st Embodiment.

As shown in FIGS. 9 and 10, in the present embodiment, the fixing portion 22 b of the housing portion 22 is fixed to the floating structure portion 24 so that the passage portion 22 a of the housing portion 22 is located below the floating structure portion 24. Has been. Therefore, the casing 22 constitutes the bottom surface 20 b of the subdivided structure 20. That is, the housing portion 22 is disposed at a position that constitutes the bottom surface 20 b of the subdivided structure 20 in the subdivided structure 20. Also in the present embodiment, the casing 22 is provided at a position where bubbles passing through the flow path 24 a can pass through the casing 22 with respect to the floating structure 24.

According to the present embodiment, as in the first embodiment, the bubbles B1 that have flowed into the gas passage portion 16 are subdivided by the housing portion 22 into small bubbles B2. It passes through the flow path 24a of the levitation structure 24 and reaches the liquid level LS. Therefore, also in this embodiment, the same effect as the first embodiment can be obtained.

(Third embodiment)
This embodiment is different from the first embodiment in the structure of the subdivided structure 20. The other structure of the apparatus temperature control apparatus 1 is the same as 1st Embodiment.

As shown in FIGS. 11 and 12, in this embodiment, the subdivided structure 20 includes a first housing part 221 and a second housing part 222 disposed below the first housing part 221 as the housing part 22. And have.

The first housing part 221 is arranged at a position constituting the top surface 20a of the subdivided structure 20 in the subdivided structure 20. The first housing part 221 is the same as the housing part 22 of the first embodiment. The 2nd housing part 222 is arrange | positioned in the position which comprises the bottom face 20b of the subdivision structure 20 among the subdivision structures 20. FIG. The 2nd housing part 222 is the same as the housing part 22 of 2nd Embodiment.

In this embodiment, the same effect as that of the first embodiment can be obtained. Furthermore, in the present embodiment, the first casing 221 has a finer mesh 27 than the second casing 222. The second casing portion 222 has a mesh 27 that is coarser than that of the first casing portion 221. Thereby, the bubbles subdivided at the second casing portion 222 can be further subdivided at the first casing portion 221. Therefore, the size of the bubbles reaching the liquid level LS is smaller than that in the case where the subdivided structure 20 has one casing portion 22 having the same size of the mesh 27 as the second casing portion 222. can do.

In addition, in this embodiment, although the roughness of each mesh | network 27 of the 1st housing part 221 and the 2nd housing part 222 was varied, it is not restricted to this. Even if the meshes 27 of the first and second housing parts 221 and 222 have the same roughness, the positions of the linear members 26 of the first and second housing parts 221 and 222 are determined in the left-right direction. It may be different. This also provides the same effect as in the present embodiment.

(Fourth embodiment)
As shown in FIG. 13, the present embodiment is different from the first embodiment in the structure and location of the subdivided structure 20. The other structure of the apparatus temperature control apparatus 1 is the same as 1st Embodiment.

As in the third embodiment, the subdivided structure 20 includes a first housing part 221 and a second housing part 222 as the housing part 22. In the present embodiment, the roughness of the meshes 27 of the first casing portion 221 and the second casing portion 222 may be different or the same.

The subdivided structure 20 is disposed inside the liquid passage portion 18. The buoyancy of the levitation structure unit 24 is set so that a part of the subdivided structure 20 is positioned above the liquid level LS. Specifically, the levitation structure portion 24 is configured such that the first casing portion 221 is positioned above the liquid level LS and the second casing portion 222 is positioned below the liquid level LS. Buoyancy is set. In this embodiment, the 1st housing part 221 comprises a part of mesh structure part. The second casing 222 constitutes another part of the mesh structure.

Here, the bubbles B1 generated inside the equipment heat exchanger 12 may rise in the liquid passage portion 18. According to the present embodiment, the bubbles B <b> 1 rising up the liquid passage portion 18 can be subdivided into the small bubbles by the second casing portion 222. Thereby, the effect similar to 1st Embodiment is acquired.

Furthermore, according to this embodiment, the following effects can be obtained.

Unlike the present embodiment, when the subdivided structure 20 is not disposed in the liquid passage portion 18, the following problem occurs. That is, when a droplet of the working fluid condensed by the condenser 14 falls inside the liquid passage portion 18 and collides with the liquid level LS, a collision sound is generated.

On the other hand, in the present embodiment, the first housing part 221 is located above the liquid level LS. For this reason, the dropped liquid droplet D <b> 1 collides with the first housing part 221. At this time, the droplet D <b> 1 is subdivided by the network structure of the first casing portion 221. Thereby, compared with the case where the subdivision structure 20 is not arrange | positioned in the liquid channel | path part 18, the collision sound of the droplet D1 can be reduced.

(Other embodiments)
(1) In each of the embodiments described above, a part of the casing 22 is located outside the levitation structure 24. However, as shown in FIGS. 14, 15, and 16, the entire housing portion 22 may be located inside the floating structure portion 24.

In the subdivided structure 20 shown in FIG. 14, one housing part 223 is located inside the floating structure part 24 as the housing part 22. The housing 223 has a lattice structure not only on the surface side but also inside. Thus, the housing 223 may have a three-dimensional shape that has a lattice structure as a whole. In the subdivided structure 20, the upper surface of the housing 223 constitutes the top surface 20 a of the subdivided structure 20. The lower surface of the housing part 223 constitutes the bottom surface 20 b of the subdivided structure 20.

In the subdivided structure 20 shown in FIG. 14, it is not limited to the case where the entire housing part 223 is located below the liquid level LS, and at least a part of the housing part 223 is located below the liquid level LS. The buoyancy of the levitation structure 24 may be set. Thereby, the effect similar to 1st Embodiment is acquired.

Further, in the subdivided structure 20 shown in FIG. 14, the roughness of the mesh 27 is made different between the upper part in the range located below the liquid level LS in the casing part 223 and the lower part below the upper part. Also good. Thereby, the effect similar to 3rd Embodiment is acquired.

Further, in the subdivided structure 20 shown in FIG. 14, the upper part of the casing part 223 is located above the liquid level LS, and the lower part of the casing part 223 is located below the liquid level LS. In addition, the buoyancy of the levitation structure portion 24 may be set. Thereby, the effect similar to 4th Embodiment is acquired. In this case, the upper part of the housing part 223 constitutes a part of the network structure part. The lower part of the housing part 223 forms another part of the net-like structure part.

15, the first structure 224 and the second structure 225 are located inside the floating structure 24 as the structure 22. Both the first housing part 224 and the second housing part 225 have a three-dimensional shape having a lattice structure as a whole. The 1st housing part 224 and the 2nd housing part 225 are not connected. The first housing part 224 and the second housing part 225 are each fixed to the levitation structure part 24. In the subdivided structure 20, the upper surface of the first casing portion 224 constitutes the top surface 20 a of the subdivided structure 20. The lower surface of the second housing part 225 constitutes the bottom surface 20 b of the subdivided structure 20.

In the subdivided structure 20 shown in FIG. 16, the first casing portion 224 and the second casing portion 225 are located inside the floating structure portion 24 as in the subdivided structure 20 shown in FIG. 15. Furthermore, the first housing part 224 and the second housing part 225 are connected by a cylindrical connecting part 226 inside the floating structure part 24. Thus, the 1st housing part 224 and the 2nd housing part 225 may be connected by the cylindrical connection part 226 which is not a lattice structure.

15 and 16, the buoyancy of the levitation structure portion 24 is set so that both the first housing portion 224 and the second housing portion 225 are positioned below the liquid level LS. Is done. In this case, the roughness of the mesh 27 is made different between the first casing portion 224 and the second casing portion 225 as in the third embodiment. Thereby, the effect similar to 3rd Embodiment is acquired.

Further, in the subdivided structure 20 shown in each of FIGS. 15 and 16, the first housing part 224 is located above the liquid level LS and the second housing part 225 is located below the liquid level LS. As such, the buoyancy of the levitation structure 24 may be set. Thereby, the effect similar to 4th Embodiment is acquired. In this case, the 1st housing part 224 comprises a part of network structure part. The second housing part 225 constitutes another part of the net-like structure part.

(2) In each of the above embodiments, the subdivision structure 20 has one floating structure 24, but a plurality of the floating structures 24 may be provided. Specifically, as illustrated in FIGS. 17 and 18, the subdivided structure 20 may include a first levitation structure portion 241 and a second levitation structure portion 242 as the levitation structure portion 24. Both the first levitation structure portion 241 and the second levitation structure portion 242 have a cylindrical shape. One housing part 227 is disposed over both the flow path 241a of the first levitation structure section 241 and the flow path 242a of the second levitation structure section 242. A part of the housing part 227 is located above the first levitation structure part 241. The upper surface of the housing 227 constitutes the top surface 20a of the subdivided structure 20. Another part of the housing part 227 is located below the second levitation structure part 242. The lower surface of the housing part 227 forms the bottom surface 20 b of the subdivided structure 20. The housing part 227 has a three-dimensional shape having a lattice structure as a whole.

Also, in the subdivided structure 20 shown in FIGS. 17 and 18, the housing part 227 is exposed at a portion between the first levitation structure part 241 and the second levitation structure part 242. For this reason, the housing part 227 constitutes a part of the side surface 20 c of the subdivided structure 20. According to this, even if the subdivided structure 20 rolls down inside the pipe and the side surface 20c of the subdivided structure 20 faces in the vertical direction, the bubbles rising in the pipe can be subdivided. In this manner, a casing portion having a lattice structure may be arranged so as to constitute the side surface 20c of the subdivided structure body 20.

(3) In each of the above embodiments, the casing 22 has a mesh-like structure having a plurality of meshes 27 by a structure in which a plurality of linear members 26 are arranged in a grid pattern. However, the present invention is not limited to this. Not. As shown in FIG. 19, a net-like structure having a plurality of meshes may be configured by a structure in which a plurality of round holes 29 are formed in the plate-like member 28. The plurality of round holes 29 are formed by punching the plate-like member 28. A plurality of round holes 29 correspond to a plurality of meshes. The plurality of meshes are a plurality of holes through which air passes. The plurality of holes are not limited to a round shape, but may be other shapes such as a polygon.

(4) In the first to third embodiments, the subdivided structure 20 is disposed in the gas passage portion 16. In the fourth embodiment, the subdivided structure 20 is disposed in the liquid passage portion 18. The location of the subdivided structure 20 is not limited to these. The location of the subdivided structure 20 may be inside the equipment heat exchanger 12. The location of the subdivided structure 20 may be any location where the liquid working fluid is present in the device fluid circuit 10.

(5) In each of the above embodiments, the subdivided structure 20 has the floating structure 24. However, the subdivided structure 20 may not have the floating structure portion 24. In this case, it is preferable to fix the housing 22 to the inside of the device fluid circuit 10 so that the housing 22 is always located below the liquid level LS.

(6) In each of the above embodiments, the device fluid circuit 10 is configured to be a loop type in which a flow path through which a gaseous working fluid flows and a flow path through which a liquid working fluid flows are separated. It does not have to be a loop type. The working fluid may move between the equipment heat exchanger 12 and the condenser 14 by flowing the working fluid through the same flow path.

(7) The present disclosure is not limited to the above-described embodiment, and can be appropriately changed within the scope described in the claims, and includes various modifications and modifications within the equivalent range. Further, the above embodiments are not irrelevant to each other, and can be combined as appropriate unless the combination is clearly impossible. In each of the above-described embodiments, it is needless to say that elements constituting the embodiment are not necessarily indispensable except for the case where it is clearly indicated that the element is essential and the case where the element is clearly considered essential in principle. Yes. Further, in each of the above embodiments, when numerical values such as the number, numerical value, quantity, range, etc. of the constituent elements of the embodiment are mentioned, it is clearly limited to a specific number when clearly indicated as essential and in principle. The number is not limited to the specific number except for the case. In each of the above embodiments, when referring to the material, shape, positional relationship, etc. of the constituent elements, etc., unless otherwise specified, or in principle limited to a specific material, shape, positional relationship, etc. The material, shape, positional relationship, etc. are not limited.

(Summary)
According to the 1st viewpoint shown by one part or all part of each said embodiment, an apparatus temperature control apparatus is provided with a working fluid circuit and a subdivision structure.

Further, according to the second aspect, in the first aspect, the subdivided structure has a network-like structure portion that forms a network-like structure. Specifically, such a configuration can be adopted. Bubbles in the liquid working fluid pass through the network structure. Thereby, the mesh-like structure part subdivides the bubbles in the liquid working fluid.

Further, according to the third aspect, in the second aspect, the mesh structure is configured by a structure in which linear members are arranged in a lattice pattern. Specifically, such a configuration can be adopted.

Further, according to the fourth aspect, in the second and third aspects, the subdivided structure has a levitation structure portion provided for the network structure portion. The floating structure part floats the subdivided structure in the liquid working fluid so that at least a part of the network structure part is located below the surface of the liquid working fluid.

According to this, even if the liquid level fluctuates, at least a part of the network structure can be positioned below the liquid level. Accordingly, it is possible to avoid a situation in which the bubbles cannot be subdivided by the mesh structure portion because all of the mesh structure portion is above the liquid level LS. That is, even if the liquid level fluctuates, the bubbles can be subdivided by the network structure.

Further, according to the fifth aspect, in the second and third aspects, the subdivided structure has a floating structure provided for the network structure. The floating structure part floats the subdivided structure in the liquid working fluid so that the entire network structure part is located below the surface of the liquid working fluid.

According to this, even if the liquid level fluctuates, the entire network structure can be positioned below the liquid level. Thereby, the same effect as the 4th viewpoint is acquired.

Further, according to the sixth aspect, in the second and third aspects, the subdivided structure has a floating structure provided for the network structure. In the levitation structure part, a part of the network structure part is located above the surface of the liquid working fluid, and another part of the mesh structure part is located below the surface of the liquid working fluid. In addition, the subdivided structure is floated on the liquid working fluid.

According to this, the bubbles can be subdivided by the portion below the liquid surface of the network structure. Furthermore, the liquid droplets falling from above the liquid surface can be subdivided by the portion above the liquid surface of the network structure. Thereby, compared with the case where a droplet collides with a liquid level when the subdivision structure is not arrange | positioned, the collision sound of a droplet can be reduced.

Further, according to the seventh aspect, in the fourth to sixth aspects, the levitation structure portion has a flow path through which bubbles pass. The mesh-like structure part is provided at a position where bubbles passing through the flow path can pass through the mesh-like structure part with respect to the floating structure part. Specifically, such a configuration can be adopted.

Claims (7)

1. An equipment temperature control device for adjusting the temperature of the equipment,
   An evaporation section (12) in which the working fluid evaporates by heat absorption from the device (BP); and a condensation section (14) in which the working fluid evaporated in the evaporation section is cooled and condensed. A working fluid circuit (10) that constitutes a thermosiphon type heat pipe in which a working fluid moves between
   A device temperature control device comprising: a subdivided structure (20) provided inside the working fluid circuit and subdividing bubbles in the liquid working fluid.
2. The device temperature control device according to claim 1, wherein the subdivided structure has a mesh-like structure portion (22) having a mesh-like structure.
3. The device temperature control device according to claim 2, wherein the mesh-like structure portion is configured by a structure in which linear members (26) are arranged in a lattice pattern.
4. The subdivided structure has a floating structure portion (24) provided with respect to the mesh structure portion,
   The said floating structure part floats the said subdivision structure in a liquid working fluid so that at least one part of the said net-like structure part may be located under the surface (LS) of a liquid working fluid. Or the apparatus temperature control apparatus of 3.
5. The subdivided structure has a floating structure portion (24) provided with respect to the mesh structure portion,
   4. The floating structure portion causes the subdivided structure to float in the liquid working fluid such that the entire network structure portion is positioned below the surface (LS) of the liquid working fluid. The apparatus temperature control apparatus as described in.
6. The subdivided structure has a floating structure portion (24) provided with respect to the mesh structure portion,
   The floating structure portion has a part (221) of the mesh-like structure portion located above the surface (LS) of the liquid working fluid, and the mesh-like structure portion below the surface of the liquid working fluid. The device temperature control device according to claim 2 or 3, wherein the subdivided structure is floated on the liquid working fluid so that the other part (222) is located.
7. The levitation structure has a flow path (24a) through which bubbles pass,
   The said mesh structure part is provided in the position which the bubble which passes the said flow path can pass through the said mesh structure part with respect to the said floating structure part. Equipment temperature control device.

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