Temperature control device

Abstract

To provide a temperature control device capable of more precisely controlling a temperature of a temperature control target.SOLUTION: A temperature control device 100 controls a temperature of a temperature control target E having a first control target EB and a second control target EH by causing fluid W to flow. The temperature control device 100 includes: a first pump 31 for transferring the fluid W with a first temperature warmed by the temperature control target E; a second pump 32 for transferring fluid W with a second temperature lower than the first temperature; a first flow passage 11 for guiding the fluid W with the first temperature transferred by the first pump 31 to the first control target EB; a second flow passage 12 in which the fluid W with the second temperature transferred by the second pump 32 flows; and a switching flow passage 13 that is connected to the first flow passage 11 and the second flow passage 12 and in which the temperature of the fluid W to be guided to the second control target EH is switched. In the switching flow passage 13, the fluid W with the first temperature or fluid W with a third temperature obtained by mixing the fluid W with the first temperature and the fluid W with the second temperature flows.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a temperature control device. [Background technology]

[0002] Various techniques for managing the temperature of an internal combustion engine or the like have been disclosed. For example, Patent Document 1 discloses a cooling control system including a radiator connected to the engine via a first circulation passage and dissipating heat from the cooling water (cooling liquid) flowing through the first circulation passage, and a heater core connected to the engine via a second circulation passage and dissipating heat from the cooling water flowing through the second circulation passage. The first circulation passage includes an outlet passage connecting a cooling water outlet provided in an upper part (cylinder head) of the engine and an inlet passage of the radiator, and an inlet passage connecting the outlet passage of the radiator and a cooling water inlet in a lower part (cylinder block) of the engine. The second circulation passage includes an outlet passage connecting a cooling water outlet provided in an upper part (cylinder head) of the engine and an inlet passage of the heater core, and an inlet passage connecting the outlet passage of the heater core and an inlet passage of the first circulation passage. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2011-169273 A Summary of the Invention [Problem to be solved by the invention]

[0004] When the engine is running, the cylinder head becomes hotter than the cylinder block. That is, the patterns of temperature change are different between the cylinder head and the cylinder block. For this reason, it is desirable to be able to manage the temperatures of the cylinder head and the cylinder block independently. However, in the cooling control system disclosed in Patent Document 1, only the first circulation passage is connected to the cooling water inlet through which the cooling water flows into the engine, and only the cooling water (cooling water at one temperature) circulating through the first circulation passage flows into the engine. In other words, the temperatures of the cylinder block and the cylinder head are managed only by the cooling water flowing into the cooling water inlet, and the temperatures of the cylinder head and the cylinder block cannot be managed independently, and there is room for improvement in the temperature management of objects to be temperature-managed such as the engine.

[0005] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a temperature management device that can more precisely manage the temperature of an object to be temperature-managed. [Means for solving the problem]

[0006] A feature of the temperature management device of the present invention is that it is a temperature management device that manages the temperature of a temperature managed object having a first managed object and a second managed object by circulating a fluid, and is equipped with a first pump that transports a fluid of a first temperature warmed by the temperature managed object, a second pump that transports a fluid of a second temperature lower than the first temperature, a first flow path that guides the fluid of the first temperature transported by the first pump to the first managed object, a second flow path through which the fluid of the second temperature transported by the second pump flows, and a switching flow path connected to the first flow path and the second flow path and through which the temperature of the fluid to be guided to the second managed object is switched, and in that the switching flow path flows a fluid of the first temperature or a fluid of a third temperature which is a mixture of the fluid of the first temperature and the fluid of the second temperature.

[0007] According to this configuration, a first flow path that guides a fluid of a first temperature to a first management object and a switching flow path that guides the fluid to a second management object are provided separately. This allows the temperature of the first management object and the second management object to be managed independently. In addition, the switching flow path allows the fluid of the first temperature or the fluid of the third temperature, which is a mixture of the fluid of the first temperature and the fluid of the second temperature, to flow, that is, the temperature of the fluid flowing through the switching flow path can also be switched. Therefore, the temperature of the object to be temperature-managed can be managed more precisely.

[0008] As another feature, the switching flow path may extend in a horizontal direction, and the second flow path may be connected to the switching flow path from a lower side in a vertical direction perpendicular to the horizontal direction.

[0009] According to this configuration, since the second flow path is connected to the switching flow path from below in the vertical direction perpendicular to the horizontal direction, it is easy to control (suppress) the inflow of the fluid flowing through the second flow path into the switching flow path. This makes it easy to manage the temperature of the fluid guided to the second managed object via the switching flow path, and allows for more precise management of the temperature of the second managed object.

[0010] As another feature, the fuel cell may further include a blocking mechanism capable of blocking the flow of the fluid at the second temperature into the first flow path.

[0011] According to this configuration, the blocking mechanism can block the fluid flowing through the second flow path from flowing into the first flow path, which makes it easier to manage the temperature of the fluid guided to the first managed object (maintaining the temperature of the fluid at a high temperature), and allows the temperature of the first managed object to be managed more precisely.

[0012] As another feature, the first flow path may be provided upstream of a connection portion with the switching flow path in a flow direction of the fluid, and may have a reduction section in which a flow path cross-sectional area is reduced compared to the upstream side, and the reduction section may constitute the blocking mechanism capable of blocking the flow of the fluid at the second temperature into the first flow path by increasing a flow rate of the fluid at the first temperature flowing into the switching flow path.

[0013] According to this configuration, the contraction section is configured to increase the flow rate of the fluid flowing into the switching flow path, and the fluid with the increased flow rate suppresses the fluid flowing through the second flow path from flowing into the first flow path. As a result, with a simple configuration such as forming a contraction section, it becomes easier to manage the temperature of the fluid guided to the first managed object, and the temperature of the first managed object can be managed more precisely.

[0014] As another feature, the first flow path may have an expansion section downstream of the contraction section and upstream of the switching flow path, in which the flow path cross-sectional area is larger than that of the contraction section, and the expansion section may be configured so that fluid flowing into the switching flow path collides with a wall surface constituting the switching flow path and swirls.

[0015] According to this configuration, the expansion section is configured so that the fluid flowing into the switching flow path collides with the wall surface that constitutes the switching flow path and swirls, thereby allowing the fluid at the first temperature and the fluid at the second temperature to be mixed well and making the temperature distribution of the fluid flowing through the switching flow path uniform.

[0016] As another feature, the fluid supply system may further include a sensor that acquires a temperature of the fluid, and a lead flow path that guides the fluid to the sensor, wherein the lead flow path has a first lead flow path connected to the switching flow path, a second lead flow path connected to the second flow path, and a junction lead flow path where the first lead flow path and the second lead flow path merge and in which the sensor is disposed, and the length of the first lead flow path may be configured to be the same as the length of the second lead flow path.

[0017] According to this configuration, the flow rate of the fluid flowing through the first lead flow path and the flow rate of the fluid flowing through the second lead flow path can be made equal. This allows the sensor disposed in the merging lead flow path to obtain an average value of the temperature of the fluid flowing through the first lead flow path and the temperature of the fluid flowing through the second lead flow path. As a result, the temperatures of the fluid flowing through the first lead flow path and the second lead flow path can be obtained more accurately. This allows the temperature of the object to be temperature-managed to be managed more precisely.

[0018] As another feature, a first lead inlet, which is an inlet for fluid of the first lead flow path, and a second lead inlet, which is an inlet for fluid of the second lead flow path, may have a smaller flow path cross-sectional area than the upstream side of the first lead inlet and the second lead inlet.

[0019] According to this configuration, the first lead inlet and the second lead inlet are configured to reduce the flow path cross-sectional area, i.e., to increase the pressure loss of the fluid, so that the difference between the pressure of the fluid flowing through the first lead flow path and the pressure of the fluid flowing through the second lead flow path becomes negligibly small, and the flow rate of the first lead flow path flowing into the junction lead flow path can be made equal to the flow rate of the second lead flow path.

[0020] As another feature, the joining lead channel may include a protrusion protruding toward the sensor disposed in the joining lead channel.

[0021] According to this configuration, a fluid (fresh fluid) that has not yet exchanged heat with the sensor is guided by the protrusion and comes into contact with the sensor. At the same time, the fluid that has exchanged heat with the sensor and been heated is pushed away from the sensor. This increases the amount of heat transferred between the sensor and the fluid. As a result, even if the flow rate of the fluid flowing through the junction lead flow path is at the lower limit of the flow rate that the sensor can measure, the temperature of the fluid can be accurately measured.

[0022] As another feature, the lead flow path may be composed of a groove formed in a first wall that constitutes the first flow path, the second flow path, and the switching flow path and a second wall that protrudes from the first wall, and a cover that covers the groove, and the sensor may be disposed between the groove and the cover.

[0023] According to this configuration, the lead flow path is composed of a groove formed in the wall and a cover that covers the groove, so that the lead flow path and the sensor can be easily configured. Also, since it is only necessary to place the sensor between the groove and the cover, the sensor can be easily assembled.

[0024] As another feature, the present invention may further include a control unit that controls operation of the first pump and the second pump, and the control unit may control the operation of the first pump and the second pump so that a position at which an interface between the fluid at the first temperature and the fluid at the second temperature is formed is between the first lead inlet and the second lead inlet.

[0025] According to this configuration, an interface between the fluid at the first temperature and the fluid at the second temperature is formed between the first lead inlet and the second lead inlet, so that the temperature of the fluid can be obtained more accurately, and as a result, the temperature of the object to be temperature-controlled can be controlled more precisely. [Brief description of the drawings]

[0026] [Figure 1] 1 is a diagram showing an outline of a temperature management device according to an embodiment; [Diagram 2] FIG. 2 is a diagram illustrating a configuration of a temperature management unit according to the embodiment. [Diagram 3] FIG. 2 is a diagram illustrating a configuration of a temperature management unit according to the embodiment. [Figure 4] 4 is a diagram showing a configuration of a switching flow path and its vicinity according to the embodiment; FIG. [Diagram 5] 4 is a diagram showing a configuration of a switching flow path and its vicinity according to the embodiment; FIG. [Figure 6] FIG. 2 is a diagram illustrating a cross section of a switching channel and its vicinity according to an embodiment. [Figure 7] 5A and 5B are diagrams illustrating a configuration of a lead channel according to the embodiment. [Figure 8] FIG. 2 is a diagram showing a temperature sensor unit according to the embodiment. [Figure 9] 5A and 5B are diagrams illustrating the configuration of a junction lead channel and a temperature sensor according to the embodiment. [Figure 10] 13 is a diagram showing a configuration in the vicinity of a switching flow path according to another embodiment. FIG. [Figure 11] FIG. 13 is an enlarged view showing a configuration in the vicinity of a switching flow path according to another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] Hereinafter, a temperature management device according to an embodiment of the present invention will be described with reference to the drawings. However, the present invention is not limited to the following embodiment, and various modifications are possible without departing from the spirit of the present invention.

[0028] [Temperature control device] First, an overview of the temperature management device 100 will be described with reference to Fig. 1. As shown in Fig. 1, the temperature management device 100 is mounted on a vehicle V such as an automobile. The temperature management device 100 manages the temperature of an engine E (an example of a subject to temperature management) as an internal combustion engine mounted on the vehicle V.

[0029] In this embodiment, the temperature management device 100 operates in two operation modes. Specifically, the temperature management device 100 operates in a first mode in which the temperature of the engine E is increased (warmed up), or in a second mode in which the temperature of the engine E is set to a target temperature. Hereinafter, the first mode will be referred to as the "warm-up mode," and the second mode will be referred to as the "temperature adjustment mode."

[0030] The temperature management device 100 includes a temperature management section 10 that manages the temperature of the engine E, and a control section 20 that controls the operation of the temperature management section 10.

[0031] [Temperature control department] Figures 2 and 3 are diagrams showing the configuration of the temperature management unit 10. In particular, Figure 2 shows the temperature management unit 10 in a warm-up mode, and Figure 3 shows the temperature management unit 10 in a temperature adjustment mode.

[0032] 2 and 3, the temperature management unit 10 manages the temperature of the engine E by circulating a coolant W (an example of a fluid). The coolant W is a cooling fluid such as a long-life coolant (LLC).

[0033] The temperature management unit 10 has a fluid flow path 1 through which coolant W flows to manage the temperature of the engine E, a radiator 2 that cools (lowers the temperature of) the coolant W, a pump 3 that circulates the coolant W in the fluid flow path 1, and a temperature sensor 4 (an example of a sensor) that acquires (measures) the temperature of the coolant W. The radiator 2, the pump 3, the temperature sensor 4, and the engine E are connected via the fluid flow path 1 through which the coolant W flows. Hereinafter, the downstream side of the flow direction of the coolant W flowing through the fluid flow path 1 will be simply referred to as the "downstream side", and the upstream side will be simply referred to as the "upstream side".

[0034] The engine E includes a cylinder block EB (an example of a first managed object) and a cylinder head EH (an example of a second managed object). The cylinder block EB is provided with a piston that generates power by thermal energy generated by the combustion of fuel. The cylinder head EH is provided with an intake port for intake and an exhaust port for exhaust. The cylinder head EH and the cylinder block EB form a combustion chamber. When the engine E is driven, heat is generated by the combustion of fuel in the combustion chamber. When the engine E is driven, the cylinder head EH becomes hotter than the cylinder block EB.

[0035] The engine E is also provided with an engine inlet E1 through which the cooling water W flows from the fluid flow path 1 into the engine E, and an engine outlet E2 through which the cooling water W flows from the engine E to the fluid flow path 1. The engine inlet E1 includes a first engine inlet E11 connected to the cylinder block EB and a second engine inlet E12 connected to the cylinder head EH.

[0036] The cooling water W that flows into the cylinder block EB through the first engine inlet E11 flows from the cylinder block EB to the cylinder head EH through an internal-engine flow passage EL formed inside the engine E. The cooling water W that flows into the cylinder head EH flows out through the engine outlet E2 into the fluid flow passage 1. The cooling water W that flows into the cylinder head EH through the second engine inlet E12 flows out through the engine outlet E2 into the fluid flow passage 1.

[0037] The radiator 2 is a heat exchanger, and cools the coolant W by exchanging heat between the coolant W and air or the like.

[0038] The pump 3 circulates the cooling water W in the fluid flow path 1 by transporting the cooling water W. In this embodiment, the pump 3 is an electric water pump, and includes an electric motor (not shown) and an impeller (not shown) driven by power from the electric motor. The pressure (discharge rate) of the pump 3 is changed by the control unit 20 described with reference to FIG. 1 controlling the operation of the electric motor (the rotational speed of the impeller).

[0039] The pump 3 includes a first pump 31 that transfers the cooling water W at a first temperature heated by the engine E, and a second pump 32 that transfers the cooling water W at a second temperature cooled by the radiator 2. The first temperature is, for example, 90 degrees to 95 degrees, and the second temperature is, for example, 0 degrees to 40 degrees (same as the outside air temperature). Since the second temperature is lower than the first temperature, hereinafter, the first temperature may be referred to as a "high temperature" and the second temperature may be referred to as a "low temperature".

[0040] The temperature sensor 4 measures the temperature of the cooling water W and outputs information indicating the measured temperature. The control unit 20 controls the operation (pressure) of the pump 3 based on the information indicating the temperature of the cooling water W output from the temperature sensor 4 and information indicating the amount of heat generated by the engine E. The control unit 20 acquires the amount of heat generated by the engine E based on information indicating the rotation speed of the engine E, the load factor of the engine E, etc.

[0041] The fluid flow path 1 includes a high-temperature flow path 11 (an example of a first flow path) through which the coolant W at a first temperature (high temperature) flows, a low-temperature flow path 12 (an example of a second flow path) through which the coolant W at a second temperature (low temperature) cooled by the radiator 2 flows, a switching flow path 13 through which the temperature of the flowing coolant W is switched, and a lead flow path 14 through which the coolant W is led to the temperature sensor 4. In addition, in Fig. 2 and Fig. 3, in order to distinguish the temperatures of the coolant W, the coolant W at the first temperature is indicated by a dashed line, and the coolant W at the second temperature is indicated by a dashed line. Furthermore, the coolant W at a third temperature (mixed temperature) obtained by mixing the coolant W at the first temperature and the coolant W at the second temperature is indicated by a dashed line (see Fig. 3).

[0042] A first pump 31 is connected to the high-temperature flow passage 11. The high-temperature flow passage 11 guides the cooling water W of a first temperature transferred by the first pump 31 to the cylinder block EB. The high-temperature flow passage 11 includes a first high-temperature flow passage 111 connected to the engine E (engine outlet E2) on the upstream side and to the first pump 31 on the downstream side, a second high-temperature flow passage 112 connected to the first pump 31 on the upstream side and to the switching flow passage 13 on the downstream side, a third high-temperature flow passage 113 connected to the switching flow passage 13 on the upstream side and to the cylinder block EB (first engine inlet E11) of the engine E on the downstream side, and a fourth high-temperature flow passage 114 connected to the first high-temperature flow passage 111 on the upstream side and to the radiator 2 on the downstream side.

[0043] That is, the first high temperature flow passage 111 guides the cooling water W from the engine E to the first pump 31, and the second high temperature flow passage 112 guides the cooling water W from the first pump 31 to the switching flow passage 13. The third high temperature flow passage 113 guides the cooling water W from the switching flow passage 13 to the cylinder block EB, and the fourth high temperature flow passage 114 guides the cooling water W branched off from the first high temperature flow passage 111 to the radiator 2.

[0044] A second pump 32 is connected to the low-temperature flow path 12. Coolant W at a second temperature transferred by the second pump 32 flows through the low-temperature flow path 12. The low-temperature flow path 12 includes a first low-temperature flow path 121 connected to the radiator 2 on the upstream side and to the second pump 32 on the downstream side, and a second low-temperature flow path 122 connected to the second pump 32 on the upstream side and to the switching flow path 13 on the downstream side. In other words, the first low-temperature flow path 121 guides the coolant W from the radiator 2 to the second pump 32, and the second low-temperature flow path 122 guides the coolant W from the second pump 32 to the switching flow path 13.

[0045] The switching flow path 13 is connected to the second high temperature flow path 112, the third high temperature flow path 113, the low temperature flow path 12 (the second low temperature flow path 122), and the cylinder head EH (the second engine inlet E12). The switching flow path 13 switches the temperature of the cooling water W guided to the cylinder head EH depending on the operation mode of the temperature management device 100.

[0046] 2, the cooling water W at a first temperature flows through the switching flow passage 13, and in the temperature adjustment mode shown in Fig. 3, the cooling water W at a third temperature, which is a mixture of the cooling water W at the first temperature and the cooling water W at the second temperature, flows through the switching flow passage 13. That is, the cooling water W at the first temperature or the cooling water W at the third temperature flows through the switching flow passage 13.

[0047] [Configuration near the switching flow path] Next, the configuration of the switching flow path 13 and its vicinity will be described with reference to Fig. 4 to Fig. 6. Fig. 4 and Fig. 5 are diagrams showing the configuration of the switching flow path 13 and its vicinity. Fig. 6 is a diagram showing a schematic cross section of the switching flow path 13 and its vicinity cut along the horizontal direction. The direction from top to bottom in Fig. 4 and Fig. 5 corresponds to the vertical direction.

[0048] 4 and 5, the switching flow passage 13 extends in a horizontal direction perpendicular to the vertical direction. The third high-temperature flow passage 113 connected to the switching flow passage 13 extends obliquely upward with the switching flow passage 13 as a base end (see also FIG. 5).

[0049] The second low-temperature flow path 122 is connected to a portion of the switching flow path 13 downstream of the connection portion P1 with the second high-temperature flow path 112. The second low-temperature flow path 122 extends along the vertical direction and is connected to the switching flow path 13 so as to be perpendicular to the extension direction of the switching flow path 13. As a result, the cooling water W (the cooling water W having a relatively low dynamic pressure among the high-temperature cooling water W flowing into the switching flow path 13) other than the mainstream of the cooling water W of the first temperature flowing from the second high-temperature flow path 112 into the switching flow path 13 (the cooling water W having a relatively high dynamic pressure among the high-temperature cooling water W flowing into the switching flow path 13) faces the cooling water W of the second temperature flowing through the second low-temperature flow path 122, and the cooling water W of the first temperature is suppressed from flowing into the second low-temperature flow path 122.

[0050] 4, the second low-temperature flow path 122 is connected to the switching flow path 13 from below in the vertical direction. That is, the temperature management device 100 is disposed (vertically disposed) on the vehicle V so that the second high-temperature flow path 112 is connected to the switching flow path 13 from below in the vertical direction. As a result, gravity acts on the cooling water W of the second temperature flow path 122, and the cooling water W of the second temperature is suppressed from flowing into the switching flow path 13, the second high-temperature flow path 112, and the third high-temperature flow path 113 located above the second low-temperature flow path 122. In addition, the cooling water W of the first temperature is suppressed from flowing into the second low-temperature flow path 122 due to the difference in specific gravity between the cooling water W of the first temperature and the cooling water W of the second temperature.

[0051] The second high-temperature flow passage 112 has a flow rate adjusting section 112a upstream of the connection portion P1. The flow rate adjusting section 112a is inclined so that the upper portion thereof approaches the switching flow passage 13.

[0052] As shown in FIG. 6, the flow rate adjusting section 112a includes a first wall surface H1 located on the side where the third high-temperature flow path 113 extends when viewed along the vertical direction, and a second wall surface H2 opposing the first wall surface H1.

[0053] When viewed in the vertical direction, the first wall surface H1 extends in the direction in which the switching flow passage 13 extends, i.e., parallel to the flow direction of the cooling water W. When viewed in the vertical direction, the second wall surface H2 is configured such that the upstream side (the side farther from the connection portion P1) approaches the first wall surface H1 and the downstream side (the side closer to the connection portion P1) is separated from the first wall surface H1. Hereinafter, the portion where the second wall surface H2 is configured to approach the first wall surface H1 (the portion including the first wall surface H1 and the second wall surface H2) is referred to as the "reduced portion 112b", and the portion where the second wall surface H2 is configured to be separated from the first wall surface H1 (the portion including the first wall surface H1 and the second wall surface H2) is referred to as the "enlarged portion 112c".

[0054] The contraction section 112b is provided upstream of the connection portion P1 (enlargement section 112c). The contraction section 112b is configured such that the cross-sectional area of ​​the flow path through which the cooling water W flows (hereinafter referred to as the "flow path cross-sectional area") is smaller than the upstream side of the contraction section 112b of the second high-temperature flow path 112 (immediately upstream of the contraction section 112b), and the flow rate of a part of the cooling water W flowing into the switching flow path 13 is increased. In detail, the contraction section 112b is configured to increase the flow rate of the cooling water W that flows on the first wall surface H1 (third high-temperature flow path 113) side, which is a part of the cooling water W flowing into the switching flow path 13 and flows through the second high-temperature flow path 112. By increasing the flow rate of the cooling water W, the cooling water W at the second temperature is pushed out to the opposite side of the third high-temperature flow path 113 in the switching flow path 13, and the cooling water W at the second temperature is suppressed from flowing into the third high-temperature flow path 113. In other words, the contracting portion 112b constitutes a blocking mechanism capable of blocking the inflow of the cooling water W at the second temperature into the high-temperature flow path 11.

[0055] The expansion section 112c is provided downstream of the contraction section 112b and upstream of the connection portion P1. The expansion section 112c is configured so that the flow passage cross-sectional area through which the cooling water W flows is larger than that of the contraction section 112b. The expansion section 112c is configured so that the cooling water W that has passed through the expansion section 112c spreads radially when it flows into the switching flow passage 13, and swirls by colliding with the third wall surface H3 that constitutes the switching flow passage 13. In detail, the expansion section 112c is configured so that at least a part of the cooling water W other than the cooling water W whose flow velocity increases among the cooling water W that flows into the switching flow passage 13, and the cooling water W that flows on the second wall surface H2 (opposite side to the third high-temperature flow passage 113) swirls by colliding with the third wall surface H3 that constitutes the switching flow passage 13. In other words, the expansion section 112c and the third wall surface H3 that constitutes the switching flow passage 13 constitute a swirl generating section that swirls the cooling water W. The cooling water W swirls around the extension direction of the switching flow passage 13 as an axis.

[0056] [Lead channel] Next, the configuration of the lead flow path 14 will be described with reference to Figures 2 and 3 and 7 and 8. Figure 7 is a diagram showing the configuration of the lead flow path 14. More specifically, it is a diagram showing the switching flow path 13 and its vicinity shown in Figure 4 as viewed from the opposite side in a horizontal direction perpendicular to the direction in which the switching flow path 13 extends. Figure 8 is a diagram showing a temperature sensor unit U in which the lead flow path 14 and the temperature sensor 4 are integrated.

[0057] 2 and 3, the lead flow path 14 is provided downstream of the second pump 32. The lead flow path 14 includes a first lead flow path 141 connected to the switching flow path 13, a second lead flow path 142 connected to the second low-temperature flow path 122, a junction lead flow path 143 where the first lead flow path 141 and the second lead flow path 142 join, and a return lead flow path 144 connected between the second pump 32 and the radiator 2 (the first low-temperature flow path 121). In order to avoid complicating the drawings, in FIGS. 2 and 3, the first lead flow path 141 is illustrated as being connected to the switching flow path 13 at a position Q1 upstream of a portion of the switching flow path 13 that connects to the second high-temperature flow path 112, but in reality, as shown in FIG. 7, the first lead flow path 141 is connected to the switching flow path 13 at a position Q2 downstream of a portion of the switching flow path 13 that connects to the second high-temperature flow path 112.

[0058] A temperature sensor 4 is disposed in the junction lead flow passage 143. The temperature sensor 4 acquires the temperature of the cooling water W flowing through the junction lead flow passage 143, and outputs information indicating the temperature.

[0059] 7 and 8, the lead flow path 14 is composed of a groove S formed in the first wall G1 and the second wall G2, and a cover C (see FIG. 8) that covers the groove S. The cover C covers the groove S to form a first lead flow path 141, a second lead flow path 142, a junction lead flow path 143, and a reflux lead flow path 144. The first wall G1 is a wall that constitutes the high-temperature flow path 11, the low-temperature flow path 12, and the switching flow path 13, and the second wall G2 is a wall that protrudes from the first wall G1. In detail, the second wall G2 includes a first extension portion G3 that extends along the extension direction of the switching flow path 13, and a second extension portion G4 that extends in a direction perpendicular to the first extension portion G3.

[0060] 7 and 8, the temperature sensor 4 has a temperature sensing part 41 that is disposed (inserted into) between a groove S (groove S formed in the first extension part G3 of the second wall G2) that constitutes the junction lead flow path 143 and the cover C. The temperature sensing part 41 is a part of the temperature sensor 4 that measures the temperature of the cooling water W.

[0061] 7, the length of the first lead flow path 141 is configured to be the same as the length of the second lead flow path 142. The length of the first lead flow path 141 is the length between the first lead inlet 14H1, which is an inlet for the cooling water W of the first lead flow path 141, and the connection position P2. The length of the second lead flow path 142 is the length between the second lead inlet 14H2, which is an inlet for the cooling water W of the second lead flow path 142, and the connection position P2. The connection position P2 indicates the position where the first lead inlet 14H1 and the second lead inlet 14H2 are connected to the junction lead flow path 143, that is, the position where the first lead inlet 14H1 and the second lead inlet 14H2 are joined.

[0062] Further, the first lead inlet 14H1 and the second lead inlet 14H2 have a smaller flow passage cross-sectional area than the upstream side of the first lead inlet 14H1 and the second lead inlet 14H2 (immediate upstream of the first lead inlet 14H1 and the second lead inlet 14H2). That is, the first lead inlet 14H1 and the second lead inlet 14H2 are configured to increase the pressure loss of the cooling water W. The first lead inlet 14H1 and the second lead inlet 14H2 are set in size so that the difference between the first pressure difference and the second pressure difference is negligible. More specifically, the first lead inlet 14H1 and the second lead inlet 14H2 are set in size sufficiently small so that the difference between the first pressure difference and the second pressure difference is negligible (the flow passage cross-sectional area is narrowed (orifice shape) compared to the immediately upstream side thereof). The first pressure difference is the difference in pressure of the cooling water W between the first lead inlet 14H1 and the lead outlet 14H3, and the second pressure difference is the difference in pressure of the cooling water W between the second lead inlet 14H2 and the lead outlet 14H3. The lead outlet 14H3 is an outlet for the cooling water W from the lead flow path 14. In this embodiment, the first lead flow path 141, the second lead flow path 142, the junction lead flow path 143, and the return lead flow path 144 have constant flow path cross-sectional areas that are equal to each other. The first lead flow path 141 has the same flow path cross-sectional area as the first lead inlet 14H1, the second lead flow path 142 has the same flow path cross-sectional area as the second lead inlet 14H2, and the return lead flow path 144 has the same flow path cross-sectional area as the lead outlet 14H3.

[0063] The first lead inlet 14H1 is also set to a size that can prevent a decrease in the amount of cooling water W at the first temperature supplied to the engine E due to the flow of the cooling water W at the first temperature into the lead flow path 14, thereby preventing a decrease in the warm-up (temperature rise) performance of the engine E.

[0064] Further, the first lead inlet 14H1 and the second lead inlet 14H2 are ensured to have a size large enough to prevent clogging even if the cooling water W contains foreign matter.

[0065] Furthermore, the first lead inlet 14H1 and the second lead inlet 14H2 are set to a size sufficient to ensure a flow rate equal to or greater than a lower limit of the flow rate of the cooling water W that can be measured by the temperature sensor 4 (a flow rate that depends on the performance of the temperature sensor 4, and is the minimum flow rate of the cooling water W at which the temperature of the cooling water W can be measured). The lower limit of the flow rate of the cooling water W that can be measured by the temperature sensor 4 is, for example, 0.2 L / min.

[0066] 9 is a diagram showing the configuration of the junction lead flow path 143 and the temperature sensor 4. More specifically, it is a diagram showing a cross section of the junction lead flow path 143 cut along the flow direction of the cooling water W. As shown in FIG. 9, the temperature sensing part 41 of the temperature sensor 4 includes a rectangular temperature sensing surface 41S that senses the temperature of the cooling water W. In this embodiment, the temperature sensing surface 41S is disposed so as to extend along the flow direction of the cooling water W.

[0067] The junction lead flow channel 143 includes a protrusion 143t protruding toward the temperature sensor 4. The protrusion 143t is provided on an inner wall 143s that surrounds the temperature sensor 4 among the inner walls 143s that configure the junction lead flow channel 143. When viewed from a direction perpendicular to the temperature sensing surface 41S, the upstream side of the protrusion 143t is in the shape of a circular arc sector (a sector with a central angle of 90 degrees or approximately 90 degrees).

[0068] The projection 143t causes the cooling water W flowing along the inner wall 143s constituting the junction lead channel 143 to collide with, or come into contact with, the temperature sensor 4.

[0069] In this embodiment, 32 protrusions 143t are provided, and eight of the 32 protrusions 143t are provided along the circumferential direction of the inner wall 143s constituting the junction lead flow path 143, and the protrusions 143t are arranged in four rows along the flow direction of the cooling water W so that the protrusions 143t are staggered as viewed from the flow direction. Each of the eight protrusions 143t (first row) located on the most upstream side is arranged so that its downstream end coincides with the upstream end of the temperature sensor 4 (temperature sensing part 41). The remaining three rows of protrusions 143t on the downstream side are arranged at predetermined intervals. In detail, each of the protrusions 143t in the fourth row (eight located on the most downstream side) of the protrusions 143t is arranged so that its downstream end coincides with the downstream end of the temperature sensing part 41 in the flow direction, and the remaining two rows are arranged so that they are equally spaced from the first row and the fourth row.

[0070] [Control Unit] 1 is an Engine Control Unit (ECU) having a processor such as a CPU (Central Processing Unit) and a storage area such as a semiconductor memory. The processor executes a control program stored in the storage area, causing the control unit 20 to control the operation of each part (pump 3) of the temperature management device 100. The control unit 20 switches control over the pump 3 between a warm-up mode and a temperature adjustment mode described with reference to FIG. 2.

[0071] Specifically, in the warm-up mode, the control unit 20 controls the pressure (discharge rate) of the first pump 31 and the pressure (discharge rate) of the second pump 32 so that the position where the interface F between the cooling water W at the first temperature (the cooling water W flowing through the switching flow path 13) and the cooling water W at the second temperature (the cooling water W flowing through the second low-temperature flow path 122) is formed is between the first lead inlet 14H1 and the second lead inlet 14H2 (midpoint) (see FIG. 7). Hereinafter, the target position where the interface F is formed (in this embodiment, the midpoint between the first lead inlet 14H1 and the second lead inlet 14H2) is referred to as the "target position".

[0072] The control unit 20 determines whether the temperature indicated by the information output from the temperature sensor 4 (hereinafter referred to as the "acquired temperature") is higher than an average temperature which is the average value of the first temperature and the second temperature, and controls the pressure of the pump 3 according to the determination result.

[0073] For example, when the control unit 20 determines that the acquired temperature is higher than the average temperature, that is, that the position where the interface F is formed is upstream of the target position (the low-temperature flow path 12 (second low-temperature flow path 122) side), the control unit 20 increases the pressure of the second pump 32. On the other hand, when the control unit 20 determines that the acquired temperature is lower than the average temperature, that is, that the position where the interface F is formed is downstream of the target position (the switching flow path 13 side), the control unit 20 decreases the pressure of the second pump 32. Note that, when the control unit 20 determines that the acquired temperature is equal to the average temperature, that is, that the position where the interface F is formed is the target position, the control unit 20 does not change the pressure of the second pump 32. Note that, even if the vehicle V (see FIG. 1) is tilted forward, backward, left or right, the control unit 20 controls the operation of the pump 3 so that the interface F is not formed inside the second high-temperature flow path 112 and the third high-temperature flow path 113, and the second lead inlet 14H2 is provided below the position where the interface F is formed (see FIG. 7).

[0074] The interface F is formed between the first lead inlet 14H1 and the second lead inlet 14H2, thereby preventing the cooling water W at the second temperature from flowing into the second high-temperature flow passage 112 and the third high-temperature flow passage 113. In other words, the control unit 20, the first pump 31, and the second pump 32 configure a blocking mechanism capable of blocking the flow of the cooling water W at the second temperature into the high-temperature flow passage 11.

[0075] Furthermore, since the interface F is formed between the first lead inlet 14H1 and the second lead inlet 14H2, only the coolant W at the first temperature flows into the engine E through the first engine inlet E11 and the second engine inlet E12. As a result, the engine E can be warmed up efficiently.

[0076] On the other hand, in the temperature adjustment mode, the control unit 20 controls the pressure of the first pump 31 and the pressure of the second pump 32 so that the cooling water W of the first temperature and the cooling water W of the second temperature are mixed in the switching flow path 13. That is, the control unit 20 controls the pressure of the first pump 31 and the pressure of the second pump 32 so that the cooling water W of the third temperature, which is a mixture of the cooling water W of the first temperature and the cooling water W of the second temperature, flows through the switching flow path 13. By the control unit 20 controlling the pressure of the pumps 31 as described above, the cooling water W of the third temperature flows into the first lead flow path 141, and the cooling water W of the second temperature flows into the second lead flow path 142.

[0077] The control unit 20 controls the operation of the pump 3, for example, by referring to pump control information (pump map) indicating information related to the control of the pump 3. The pump control information is created in advance by a designer of the temperature management device 100 or the like, and is stored in advance in a storage area of ​​the control unit 20. The pump control information is, for example, information indicating a correlation between the amount of heat generated by the engine E, a first target temperature of the cooling water W to be caused to flow into the cylinder head EH, and a target temperature (hereinafter referred to as a "second target temperature") of the cooling water W flowing out from the engine outlet E2 of the engine E. The second target temperature is, for example, 95 degrees. The control unit 20 refers to the pump control information and acquires the first target temperature based on the second target temperature and the amount of heat generated by the engine E.

[0078] The control unit 20 may determine whether the third temperature is higher than a first target temperature, which is a target temperature of the cooling water W to be caused to flow into the cylinder head EH, and control the pressure (driving force) of the pump 3 according to the determination result. The third temperature is acquired based on information indicating the temperature output from the temperature sensor 4 and information indicating the second temperature (the temperature of the cooling water W flowing out from the radiator 2).

[0079] When the control unit 20 determines that the third temperature is higher than the first target temperature, the control unit 20 increases the pressure of the second pump 32. On the other hand, when the control unit 20 determines that the third temperature is lower than the first target temperature, the control unit 20 decreases the pressure of the second pump 32. As a result, the coolant W whose temperature has been adjusted to the first target temperature flows into the cylinder head EH from the second engine inlet E12 via the switching flow path 13. Note that when the control unit 20 determines that the third temperature is equal to the first target temperature, the control unit 20 does not change the pressure of the second pump 32.

[0080] [Effects of the embodiment] As described above, according to this embodiment, the high temperature flow passage 11 (third high temperature flow passage 113) that guides the high temperature (first temperature) cooling water W to the cylinder block EB and the switching flow passage 13 that guides the cooling water W to the cylinder head EH are separately provided, so that the temperatures of the cylinder block EB and the cylinder head EH can be controlled independently. In addition, in the warm-up mode and the temperature control mode, the switching flow passage 13 flows with the first temperature cooling water W or the third temperature cooling water W obtained by mixing the first temperature cooling water W and the second temperature cooling water W. In other words, the temperature of the cooling water W flowing through the switching flow passage 13 can be switched. Therefore, the temperature of the engine E can be controlled more precisely.

[0081] Furthermore, according to this embodiment, since the low-temperature flow path 12 (second low-temperature flow path 122) is connected to the switching flow path 13 from below in the vertical direction perpendicular to the horizontal direction, it is easy to control (suppress) the inflow of the cooling water W flowing through the low-temperature flow path 12 into the switching flow path 13. This makes it easy to manage the temperature of the cooling water W guided to the cylinder head EH via the switching flow path 13 (maintaining the temperature of the cooling water W at the first temperature) in the warm-up mode (see FIG. 2), and the temperature of the cylinder head EH can be managed more precisely. Furthermore, in the warm-up mode, it is possible to suppress the cooling water W at the first temperature flowing into the cylinder head EH from flowing into the low-temperature flow path 12 (second low-temperature flow path 122), and it is also possible to suppress a decrease in warm-up performance.

[0082] Furthermore, according to this embodiment, the reduction section 112b, the control section 20, the first pump 31, and the second pump 32 serving as a blocking mechanism can block the flow of the cooling water W flowing through the low-temperature flow path 12 into the high-temperature flow path 11. This facilitates temperature management of the cooling water W introduced into the cylinder block EB (maintaining the temperature of the cooling water W at the first temperature), and allows for more precise management of the temperature of the cylinder block EB.

[0083] Furthermore, according to this embodiment, the contraction section 112b is configured so as to increase the flow rate of the cooling water W flowing on the first wall surface H1 (third high temperature flow path 113) side, which is a part of the cooling water W flowing into the switching flow path 13 and flowing through the second high temperature flow path 112, and the cooling water W with the increased flow rate is prevented from flowing into the third high temperature flow path 113 in the switching flow path 13. As a result, the temperature management of the cooling water W guided to the cylinder block EB (maintaining the temperature of the cooling water W at the first temperature) becomes easier, and the temperature of the cylinder block EB can be managed more precisely.

[0084] Furthermore, according to this embodiment, the expansion section 112c is configured so that the cooling water W flowing into the switching flow path 13 collides with the third wall surface H3 constituting the switching flow path 13 and swirls, so that the cooling water W at the first temperature and the cooling water W at the second temperature are well mixed, and the temperature distribution of the cooling water W flowing through the switching flow path 13 can be made uniform. As a result, in the temperature adjustment mode, the temperature of the cooling water W at the third temperature flowing from the switching flow path 13 through the first lead flow path 141 into the junction lead flow path 143 becomes constant. As a result, the temperature of the cooling water W (third temperature) acquired by the temperature sensor 4 becomes more accurate.

[0085] Furthermore, according to this embodiment, since the length of the first lead flow path 141 is configured to be the same as the length of the second lead flow path 142, the flow rate of the cooling water W flowing through the first lead flow path 141 and the flow rate of the cooling water W flowing through the second lead flow path 142 can be made equal. This allows the temperature sensor 4 disposed in the merging lead flow path 143 to obtain an average value of the temperature of the cooling water W flowing through the first lead flow path 141 and the temperature of the cooling water W flowing through the second lead flow path 142. As a result, the temperature of the cooling water W flowing through the first lead flow path 141 and the temperature of the cooling water W flowing through the second lead flow path 142 can be obtained more accurately. Therefore, the temperature of the engine E can be managed more precisely.

[0086] Further, according to this embodiment, the first lead inlet 14H1 and the second lead inlet 14H2 are configured to reduce the flow path cross-sectional area, i.e., to increase the pressure loss of the cooling water W. Therefore, the flow rate of the cooling water W in the first lead flow path 141 flowing into the junction lead flow path 143 can be made equal to the flow rate of the cooling water W in the second lead flow path 142. In particular, the size of the first lead inlet 14H1 and the second lead inlet 14H2 is set to a size (small) such that the difference between the first pressure difference and the second pressure difference can be ignored, so that the flow rate of the cooling water W flowing through the first lead flow path 141 can be made equal to the flow rate of the cooling water W flowing through the second lead flow path 142.

[0087] The cooling water W comes into contact with the temperature sensor 4, and exchanges heat with the temperature sensor 4 to increase its temperature. For this reason, if the protrusion 143t is not provided on the junction lead flow passage 143, the cooling water W after heat exchange with the temperature sensor 4 and temperature increase flows along the temperature sensor 4 (temperature sensing portion 41), and the temperature of the cooling water W measured by the temperature sensor 4 may be inaccurate. However, according to the present embodiment, the cooling water W (fresh cooling water W) that has not undergone heat exchange with the temperature sensor 4 is guided by the protrusion 143t to come into contact with the temperature sensor 4. In addition, the cooling water W that has been heat-exchanged with the temperature sensor 4 and has been heated is pushed away from the temperature sensor 4 (temperature sensing portion 41). This can increase the amount of heat transfer between the temperature sensor 4 and the cooling water W. As a result, even if the flow rate of the cooling water W flowing through the junction lead flow passage 143 is the lower limit of the flow rate that can be measured by the temperature sensor 4 (measurement that depends on the performance of the temperature sensor 4), the temperature of the cooling water W can be accurately measured.

[0088] Furthermore, according to this embodiment, the lead flow path 14 is composed of the groove S and the cover C that covers the groove S, so that the lead flow path 14 and the temperature sensor 4 can be easily configured. Moreover, since it is only necessary to dispose the temperature sensor 4 between the groove S and the cover C, the assembly of the temperature sensor 4 can be facilitated.

[0089] According to this embodiment, in the warm-up mode, the control unit 20 controls the operation of the first pump 31 and the second pump 32 so that the position where the interface F between the coolant W at the first temperature and the coolant W at the second temperature is formed is between the first lead inlet 14H1 and the second lead inlet 14H2. This makes it possible to obtain the temperature of the coolant W more accurately. As a result, it is possible to manage the temperature of the engine E more precisely.

[0090] [Another embodiment] The present invention may be configured as follows other than the above-described embodiment (common numbers and symbols as in the embodiment are used to designate components having the same functions as in the embodiment).

[0091] (1) For example, as shown in Fig. 10, the second high-temperature flow passage 112 may include a branch portion 112B, which is connected to the switching flow passage 13. The branch portion 112B is inclined upward as it approaches the switching flow passage 13. This makes it possible to suppress the coolant W at the first temperature from flowing into the second low-temperature flow passage 122, and suppress a decrease in the warm-up performance of the engine E. Note that the direction from top to bottom in Fig. 10 corresponds to the vertical direction.

[0092] 11, in order to more efficiently stir the cooling water W flowing into the switching flow path 13, a baffle plate 112J, a stirring tank 112T, or the like may be provided inside the second high-temperature flow path 112 (branching portion 112B) to improve the stirring performance of the cooling water W. The stirring portion 112K may be provided in the flow rate adjusting portion 112a described with reference to FIG.

[0093] (2) In the present embodiment, the cooling water W that has passed through the temperature sensor 4 is returned between the radiator 2 and the second pump 32. However, the cooling water W that has passed through the temperature sensor 4 may be returned to a position in the first high-temperature flow path 111 that is upstream of the first pump 31 and downstream of the branch point with the fourth high-temperature flow path 114.

[0094] (3) In the present embodiment, the engine E has been described as an example of an object to be subjected to temperature management, but the object to be subjected to temperature management is not limited to the engine E. The object to be subjected to temperature management may be, for example, a rechargeable battery such as a nickel-metal hydride battery or a lithium-ion battery, or a fuel cell that generates electricity through a chemical reaction.

[0095] (4) In the present embodiment, the cooling water W has been described as an example of a fluid. However, the fluid may be a fluid other than the cooling water W, such as a paraffin-based insulating oil, a hydrofluorocarbon (HFC), a hydrofluoroolefin (HFO), or other refrigerant.

[0096] (5) In this embodiment, the switching flow path 13 extends horizontally, but the switching flow path 13 does not have to extend horizontally and may be inclined with respect to the horizontal direction, for example. In addition, the second low-temperature flow path 122 is not limited to being connected to the switching flow path 13 from below in the vertical direction and may be connected to the switching flow path 13 from, for example, obliquely below.

[0097] (6) The second high-temperature flow passage 112 may omit the contracting section 112b, and the cutoff mechanism may be configured only by control of the pump 3. Also, the second high-temperature flow passage 112 may omit the expanding section 112c.

[0098] (7) The first lead flow path 141 and the second lead flow path 142 need not be configured to have the same length as long as they are configured to equalize the flow rates of the cooling water W flowing in. The sizes of the first lead inlet 14H1 and the second lead inlet 14H2 also need not be configured to equalize the flow rates of the cooling water W flowing in the first lead flow path 141 and the second lead flow path 142 as long as they are configured to equalize the flow rate of the cooling water W flowing in the first lead flow path 141 and the second lead inlet 14H2. The flow path cross-sectional area does not need to be smaller than the upstream of the first lead inlet 14H1 and the second lead inlet 14H2.

[0099] (8) In the present embodiment, the case where 32 protrusions 143t are provided has been described, but the number of protrusions 143t can be changed as appropriate. Specifically, the number of protrusions 143t provided along the circumferential direction is not limited to eight, and may be four, six, etc., and the number of protrusions 143t provided along the flow direction is not limited to four rows, and may be six, eight, etc. In addition, the eight protrusions 143t located on the most upstream side do not have to be provided so that their downstream ends coincide with the upstream end of the temperature sensor 4 (temperature sensing section 41). In addition, the downstream end of the protrusion 143t (fourth row) located on the most downstream side does not have to coincide with the downstream end of the temperature sensing section 41. Furthermore, the eight protrusions 143t do not have to be provided at equal intervals along the flow direction. Alternatively, the joint lead flow path 143 may omit the protrusions 143t. In addition, the shape of the temperature sensing surface 41S is not limited to a rectangular shape. The shape of the temperature sensing surface 41S may be, for example, an ellipse, a circle, a sector, etc.

[0100] (9) In this embodiment, the lead flow passage 14 is composed of a groove S and a cover C, but the lead flow passage 14 may be composed of a cylindrical tube or the like, and the temperature sensor 4 may be placed (inserted) inside the tube.

[0101] (10) In the present embodiment, in the warm-up mode, the control unit 20 controls the position where the interface F is formed to be the target position by adjusting the pressure of the second pump 32, but the control unit 20 may control the position where the interface F is formed to be the target position by changing the pressure of the first pump 31. Alternatively, the control unit 20 may control the position where the interface F is formed to be the target position by changing both the pressure of the first pump 31 and the pressure of the second pump 32. Similarly, in the temperature adjustment mode, only the pressure of the first pump 31 may be changed, or both the pressures of the first pump 31 and the second pump 32 may be changed, so that the cooling water W at the first temperature and the cooling water W at the second temperature are mixed in the switching flow path 13.

[0102] (11) In the present embodiment, the first lead flow path 141, the second lead flow path 142, the junction lead flow path 143, and the reflux lead flow path 144 have constant and equal flow path cross-sectional areas. However, the first lead flow path 141, the second lead flow path 142, the junction lead flow path 143, and the reflux lead flow path 144 do not have to have constant and equal flow path cross-sectional areas. However, it is preferable that the first lead flow path 141 and the second lead flow path 142 have constant and equal flow path cross-sectional areas. In addition, the first lead flow path 141 may have a different flow path area from the first lead inlet 14H1, the second lead flow path 142 may have a different flow path area from the second lead inlet 14H2, and the reflux lead flow path 144 may have a different flow path area from the lead outlet 14H3. [Industrial Applicability]

[0103] The present invention can be used in a temperature management device. [Explanation of symbols]

[0104] 3: Pump 4: Temperature sensor (sensor) 11: High temperature flow path (first flow path) 12: Low temperature flow path (second flow path) 13: Switching flow path 14: Lead channel 14H1: First lead inlet 14H2: Second lead inlet 20: Control section 31: First pump 32: Second pump 100: Temperature control device 112b:Reduction part 112c: Enlarged section 141: First lead channel 142: Second lead channel 143: Joint lead channel 143t:Protrusion C: Cover E: Engine (temperature control target) EB: Cylinder block (first control item) EH: Cylinder head (second control item) F: Interface H3: 3rd wall (wall) P1: Connection part S:Groove W: Cooling water (fluid)

Claims

1. A temperature management device that manages a temperature of a temperature management target having a first management target and a second management target by circulating a fluid, a first pump that transfers a fluid at a first temperature that has been heated by the temperature management target; a second pump for transporting a fluid at a second temperature lower than the first temperature; a first flow path that guides the fluid at the first temperature transferred by the first pump to the first managed object; a second flow path through which the fluid at the second temperature transported by the second pump flows; a switching flow path connected to the first flow path and the second flow path, in which a temperature of a fluid to be guided to the second managed object is switched; A temperature management device in which a fluid at the first temperature or a fluid at a third temperature obtained by mixing the fluid at the first temperature and the fluid at the second temperature flows through the switching flow path.

2. The switching flow path extends in a horizontal direction, The temperature management device according to claim 1 , wherein the second flow path is connected to the switching flow path from a lower side in a vertical direction perpendicular to the horizontal direction.

3. The temperature management device according to claim 1 or 2, further comprising a blocking mechanism capable of blocking the flow of the fluid at the second temperature into the first flow path.

4. the first flow path has a narrowing portion provided upstream of a connection portion with the switching flow path in a flow direction of the fluid, the narrowing portion having a flow path cross-sectional area narrower than that of the upstream side, The temperature management device according to claim 3 , wherein the contraction section constitutes the blocking mechanism capable of blocking the flow of the fluid at the second temperature into the first flow path by increasing the flow rate of the fluid at the first temperature flowing into the switching flow path.

5. the first flow path has an expansion portion downstream of the contraction portion and upstream of the switching flow path, the expansion portion having a flow path cross-sectional area larger than that of the contraction portion, The temperature management device according to claim 4 , wherein the expansion portion is configured so that the fluid flowing into the switching flow passage collides with a wall surface that constitutes the switching flow passage and swirls.

6. A sensor for acquiring a temperature of the fluid; a lead flow path for guiding the fluid to the sensor; The lead flow path includes a first lead flow path connected to the switching flow path; a second lead flow path connected to the second flow path; a joining lead channel where the first lead channel and the second lead channel join together and in which the sensor is disposed, 3. The temperature control device according to claim 1, wherein a length of the first lead channel is configured to be the same as a length of the second lead channel.

7. 7. The temperature management device of claim 6, wherein a first lead inlet, which is an inlet for fluid of the first lead flow path, and a second lead inlet, which is an inlet for fluid of the second lead flow path, have a reduced flow path cross-sectional area compared to the upstream side of the first lead inlet and the second lead inlet.

8. The temperature management device according to claim 6 , wherein the joint lead channel includes a protrusion that protrudes toward the sensor disposed in the joint lead channel.

9. the lead flow path is composed of a groove formed in a first wall constituting the first flow path, the second flow path, and the switching flow path and a second wall protruding from the first wall, and a cover covering the groove, The thermal management device of claim 6 , wherein the sensor is disposed between the groove and the cover.

10. A control unit that controls operations of the first pump and the second pump is further provided. The temperature management device of claim 7, wherein the control unit controls the operation of the first pump and the second pump so that a position at which an interface between the fluid at the first temperature and the fluid at the second temperature is formed is between the first lead inlet and the second lead inlet.

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