JP6079212B2 - COOLING DEVICE, ELECTRONIC DEVICE, AND COOLING METHOD - Google Patents

Description

The present invention relates to a cooling device, an electronic device, and a cooling method for cooling a heat generating component by performing heat transfer via a refrigerant circulated to the heat generating component side.

  The electronic device includes, for example, an arithmetic component using a semiconductor element or a memory as a heat generating component. In the electronic device provided with such a heat generating component, a cooling device is installed to maintain each component at an appropriate temperature. This cooling device includes, for example, one that directly radiates heat generated from a heat-generating component to the outside, and one that causes heat exchange via a refrigerant circulated to the heat-generating component side and exhausts heat at another location.

  The cooling device collects and uses the flow energy due to the circulation of the refrigerant generated by heat transfer and the flow energy due to the rising airflow of the radiated heat. As a means for recovering the energy of this flow, for example, there is one in which a fan or the like is installed on a circulating refrigerant or a rising air flow path.

With regard to the structure for utilizing such medium circulation and air flow, a fan-type heat sink installed at the top of the heating element is rotated by an updraft to generate power with a generator, and this power is used as a power source for the motor. There is (for example, Patent Document 1). Moreover, an expansion turbine arranged between a condenser and an evaporator is rotated by a pressure difference of a refrigerant, and there is a motor that drives an electric motor using this rotational power as a part of driving force (for example, Patent Document 2). ). Moreover, there exists a thing which improves the thermal radiation efficiency of a refrigerant | coolant by rotating the fan propeller installed in the container exterior via the turbine propeller rotated with the vapor flow of a refrigerant | coolant (for example, patent document 3).

JP 2008-311343 A Japanese Patent Laid-Open No. 5-322347 JP 2007-066452 A

  By the way, some electronic devices utilize the principle of a thermosyphon as a cooling means for heat-generating components. The cooling means using the thermosiphon causes a phase change that evaporates when the refrigerant is heated by heat exchange with, for example, heat-generating components. The cooling means, for example, separately circulates a conduit for flowing a vapor-phase refrigerant evaporated by heat exchange to the condensing unit side and a conduit for flowing a liquid-phase refrigerant cooled from the condensing unit to the heat generating component side. A so-called loop thermosyphon heat pipe has been used.

  The cooling means using the heat pipe is provided with a condensing part above the evaporation part in contact with the heat generating component, and using the vapor flow of the evaporated refrigerant, the refrigerant flows to the condensing part side, and the refrigerant cooled by the condensing part The structure was made to circulate to the lower evaporation section side using gravity. The flow of the refrigerant inside the cooling means depends on the amount of vapor generated in the evaporation section. For example, when the flow rate of the steam generated in the evaporation unit is low and the flow rate of the circulating refrigerant is close to the vaporization amount, the cooling unit can cool the heat generating component. However, when the temperature of the heat generating component is high, the amount of vaporization in the evaporation unit increases, and the flow rate of the circulating refrigerant is smaller than the amount of vaporization, most or all of the refrigerant in the evaporation unit is vaporized. Therefore, there is a risk of falling into a so-called dry-out state in which the cooling function is lowered.

  Further, the cooling device that uses gravity for the refrigerant circulation has a structure in which the condensing unit is arranged above the evaporation unit. Therefore, in the cooling means, for example, a heat design that does not cause a dry-out state is performed in consideration of the heat generation temperature of the heat-generating component, and a method of charging a large amount of refrigerant has been taken. However, such a method may not be able to cope with a case where heat generation more than expected is generated. Further, by adding a large amount of refrigerant in order to increase the safety level, there is a problem that the size of the cooling means and the arrangement structure are limited, and the installation possible range is limited.

  Therefore, an object of the cooling device, the electronic device, and the cooling method of the present disclosure is to improve the cooling function for the cooling target by improving the circulation function of the refrigerant in the cooling circuit.

In addition, another object of the cooling device, the electronic device, and the cooling method of the present disclosure is to increase the degree of freedom of the arrangement position of the condensing unit with respect to the evaporation unit, to save space of the cooling device and to expand the application range. .

In order to achieve the above object, one aspect of the configuration of the present disclosure includes an evaporation unit, a condensing unit, a first pipe line, a second pipe line, a turbine, a rotor, an external driving unit, and a first unit. Temperature detecting means, second temperature detecting means, and a control unit. The evaporating unit is installed in the heat generating component and evaporates the refrigerant filled therein by the heat generated by the heat generating component. The condensing unit takes in at least the evaporated refrigerant and performs heat exchange to condense. The first conduit causes the refrigerant that flows by evaporation in the evaporation section to flow to the condensation section. The second conduit flows the refrigerant condensed in the condensing unit to the evaporating unit. The turbine is installed in the first pipeline and rotates in contact with the flowing refrigerant. And a rotor rotates based on rotation of the said turbine, and flows the said refrigerant | coolant in a said 2nd pipe line. The external drive means is installed on the rotor and applies a rotational force to assist the rotation of the rotor. The first temperature detection means detects the temperature of the refrigerant flowing through the second pipe. The second temperature detecting means detects the temperature of the heat generating component. Control unit, the temperature of the refrigerant detected by the first temperature detecting means, determining whether or not to operate the external drive means, the temperature of the heating part detected by the second temperature detecting means The external driving means is driven and adjusted to control the flow rate of the refrigerant that flows into the second pipe.

  According to the cooling device, the electronic device, or the cooling method of the present disclosure, one of the following effects can be obtained.

  (1) By using the flow energy collected by the turbine from the refrigerant vapor flow, the rotor in the second pipe is rotated, so that the flow rate appropriate for the state of the heat-generating component is given to the evaporation section. This makes it possible to circulate the refrigerant.

  (2) Since the refrigerant is circulated by rotating the rotor according to the vapor flow of the refrigerant, the responsiveness of the circulation flow rate is improved with respect to the increase / decrease of the vapor flow due to the temperature change of the heat generating component.

  (3) The configuration for forced circulation by the rotor does not limit the position of the condensing unit with respect to the evaporation unit, making it possible to reduce the size and height of the cooling device and freely set the shape of the entire cooling device. Become.

Other objects, features, and advantages of the present invention will become clearer with reference to the accompanying drawings and each embodiment.

It is a figure which shows the structural example of the cooling device which concerns on 1st Embodiment. It is a figure which shows the structural example of the cooling device installed in an electronic device. It is a figure which shows the structural example of an impeller or a moving blade component. It is a figure which shows the structural example of rotation components. It is a figure which shows the example of arrangement | positioning conditions of a turbine and a rotor. It is a figure which shows an example of the arrangement | positioning relationship of the blade | wing components of a turbine and a rotor. It is a figure which shows the principle of the connection by a magnet coupling. It is a figure which shows the structural example of an electronic apparatus provided with the cooling device which concerns on 2nd Embodiment. It is a figure which shows the structural example of an electronic apparatus provided with external power. It is a figure which shows the structural example of a cooling device provided with the state detection function of a heat-emitting component. It is a figure which shows a control block. It is a figure which shows the structural example of a computer. It is a flowchart which shows an example of cooling control. It is a figure which shows the structural example of an electronic apparatus provided with the cooling device which concerns on 3rd Embodiment. It is a figure which shows the example of an external appearance structure of a turbine and a rotor. It is a figure which shows the example of a decomposition | disassembly state of a rotor. It is a figure which shows the connection principle by the coupling of an external drive means and a rotor. It is a figure which shows the connection principle by the coupling of an external drive means and a rotor. It is a fragmentary sectional view which shows the external appearance and internal structure of a magnet coupling. It is a figure which shows the structural example of a magnet coupling. It is a flowchart which shows an example of cooling control. It is a flowchart which shows another example of cooling control.

  [First Embodiment]

  FIG. 1 shows a configuration example of a cooling device according to the first embodiment. The configuration shown in FIG. 1 is an example, and the present invention is not limited to such a configuration.

  A cooling device 2 shown in FIG. 1 is an example of the cooling device according to the present disclosure, and a refrigerant 12 is circulated between an evaporating unit 4 and a condensing unit 6 through an outgoing line 8 and a return line 10. The cooling device 2 absorbs heat by the refrigerant 12 that has flowed into the evaporating unit 4 installed in the vicinity of the heat generating component 14 or in the vicinity thereof, and moves the heat to the condensing unit 6 side through the refrigerant 12. That is, the cooling device 2 performs heat transfer using latent heat that causes a phase change of the refrigerant 12. The cooling device 2 includes, for example, a turbine 16 on the outgoing line 8 and a rotor 18 on the return line 10. The rotor 18 is connected to the turbine 16 and rotates based on the rotation of the turbine 16. Then, the refrigerant 12 in the return pipe 10 is forced to flow by the rotation of the rotor 16 and flows toward the evaporator 4 side.

  The evaporating unit 4 is an example of means for absorbing heat by exchanging heat generated from the heat generating component 14 with the refrigerant 12. 2 constitutes a heat sink that, for example, is filled with the refrigerant 12 and transfers heat from the contacting heat generating component 14 to the refrigerant 12 inside. Inside the evaporation unit 4, the refrigerant 12 is evaporated by absorbing heat generated from the heat generating component 14. Thereby, the refrigerant | coolant 12 cools the heat-emitting component 14 with the heat of vaporization. The coolant 12 may be pure water, for example, or may be a fluorinated liquid.

  The evaporator 4 is installed on the upper side of the heat generating component 14 mounted on the circuit board 20, for example. The evaporation unit 4 is formed with a heat absorption unit 22 that absorbs heat from the refrigerant 12 filled therein. The forward pipeline 8 and the return pipeline 10 connected to the heat absorption part 22 are used as a part of the refrigerant pipeline of the sealed cooling device 2. The refrigerant 12 filled in the heat absorption part 22 is, for example, a gas-liquid two phase in which liquid and evaporated gas are mixed, or a state in which a certain amount of liquid is accumulated.

  The condensing unit 6 is an example of a unit that cools and condenses the refrigerant 12 that has absorbed and vaporized into a liquid, and takes in at least the vapor refrigerant 12 taken in from the evaporation unit 4. For example, the forward conduit 8 and the return conduit 10 are connected to the condensing unit 6 and function as a part of the refrigerant conduit of the cooling device 2 sealed between the evaporator 4. The condensing unit 6 includes, for example, a heat exchanger that exchanges heat between the refrigerant 12 vaporized inside and the outside air, and changes the phase of the refrigerant 12 vaporized by the heat of condensation due to heat exchange into a liquid. Further, the condensing unit 6 may be provided with a cooling fan or the like in order to efficiently exchange heat with the outside air, for example.

  In this cooling device 2, for example, the condensing unit 6 and the evaporating unit 4 are installed with a certain height difference according to the same height or the mounted parts on the circuit board 20. In addition, the cooling device 2 is in a mounted state such as a vertically placed state, a horizontally placed state, or an inverted state according to the installation state of the circuit board 20, for example.

  The forward pipe 8 is an example of the first pipe of the present disclosure, and one end side is connected to the evaporation unit 4 and the other end side is connected to the condensation unit 6, and the high-temperature refrigerant 12 heated inside is provided. Shed. The refrigerant 12 flowing inside the forward pipe 8 is, for example, a gas only or a gas-liquid two-phase flow of gas and liquid.

  The return pipe 10 is an example of the second pipe of the present disclosure, and has a configuration in which the refrigerant 12 condensed by the condensing unit 6 flows to the evaporation unit 4 side. The refrigerant 12 flowing inside is in a liquid state cooled to a predetermined temperature or lower.

  The forward pipe 8 and the return pipe 10 may be formed with the same pipe diameter, or may be formed with a specific ratio. The sizes of these pipes may be set according to the assumed temperature of the heat generating component 14, the flow rate of the refrigerant 12 based on the cooling efficiency of the refrigerant 12, and the like.

  The heat generating component 14 is an example of an electronic component mounted on an electronic device 24 such as a server device or a PC (Personal Computer). Since the heat generating component 14 is in a high temperature state due to arithmetic processing or the like, a cooling process is performed to continue normal operation. It is a part to be performed. The heat generating component 14 is, for example, a processor or a memory configured by a semiconductor element, a GPU (Graphics Processing Unit), a DC-DC converter of another power supply device, and the like, and particularly a component having a high heat generation density with respect to the size of the component. For example, the evaporation unit 4 is installed on the exterior side of the heat generating component 14 via a TIM (Thermal Interface Material) 26 for improving the cooling efficiency. The TIM 26 is an example of a heat conductive material, and may be made of silicone, graphite, heat conductive grease, or the like.

  The cooling device 2 is installed in the electronic device 24 on or near the circuit board 20 on which the heat generating component 14 is mounted.

  The turbine 16 is an example of a unit that is installed on the outgoing pipe 8 and rotates by collecting the flow energy of the refrigerant 12 evaporated by heating. The turbine 16 rotates by bringing the flowing refrigerant 12 into contact with, for example, an impeller (impeller) installed therein. And the refrigerant | coolant 12 which contacted the turbine 16 is poured into the pipe line 8 connected with the condensation part 6 side.

  The rotor 18 is installed on the return pipe 10 and is rotated based on the rotation of the turbine 16 mechanically or electromagnetically connected to the rotation shaft so as to force the refrigerant 12 to flow. It is an example. The rotor 18 includes a moving blade for pushing the refrigerant 12 flowing in from the condenser 6 side toward the evaporator 4.

  The rotor 18 is arranged coaxially with the turbine 16 and rotates using kinetic energy generated by the rotation of the turbine. A coupling 28 is provided between the turbine 16 and the rotor 18 to transmit the rotation of the turbine 18 at a specific drive ratio, and the rotor 18 is rotated by the coupling 28. The coupling 28 is an example of a coupling means, and may be, for example, a clutch mechanism and a gear mechanism that mechanically set a drive ratio, or an electromagnetic coupling mechanism that electromagnetically attracts the impeller and the moving blade. There may be.

  The cooling device 2 is configured by a loop-type thermosyphon, and the refrigerant 12 enclosed in the heat absorption part 22 of the evaporation part 4 evaporates by heat exchange and flows into the forward pipe line 8 at a high speed. The vapor flow of the refrigerant 12 in the forward pipe 8 flows, for example, at a flow velocity of about 1 [m / s]. The refrigerant 12 is brought into contact with the turbine 16 through the forward pipe 8 and is rotated, whereby the rotational energy is recovered and then guided to the condensing unit 6 side. The refrigerant 12 is condensed into a low-pressure liquid phase by releasing condensation heat to the outside by heat exchange in the condensing unit 6. The refrigerant 12 in the liquid phase is guided to the return line 10 side by, for example, flow energy from the forward line 8 side or forced flow by rotation of the rotor 18. Then, the refrigerant 12 that has become a liquid phase is controlled to a predetermined flow rate by the number of rotations of the rotor 18, and flows to the evaporation unit 4 side. The refrigerant 12 in the return pipe 10 flows at a flow rate of about 5 [cm / s], for example.

  <Example of configuration of impeller or blade>

  3 and 4 are diagrams showing examples of the configuration of the impeller or the moving blade component. The configuration shown in FIGS. 3 and 4 is an example.

  A rotating component 30 shown in FIG. 3 is an example of a turbine 16 that is rotated by the refrigerant 12 or a rotor 18 that forcibly flows the refrigerant 12. The rotating component 30 includes, for example, a case component 32, a blade component 34, and a lid component 36. The case part 32 is provided with a storage hole 38 for storing the blade part 34 therein, and is provided with, for example, a refrigerant flow part 40 for inflow or discharge of the refrigerant 12 on the side surface side. For example, the refrigerant flow part 40 is eccentrically installed on the circumferential side of the blade part 34 with respect to the inside of the storage hole 38.

  The blade part 34 includes a body part 44 that rotates inside the blade 42 and the case part 32, rotates in contact with the flowing refrigerant 12, or rotates by an external force to force the refrigerant 12 to flow. The wing | blade 42 is integrally formed or installed in the upper part side of the trunk | drum 44 formed in the column shape, for example. The body portion 44 is formed with a shaft portion 46 for rotating the blade part 34 at the center. The shaft portion 46 is pivotally supported at the central portion of the lid component 36, for example.

  On the lower side of the body portion 44, for example, magnet parts 48 and 49 are installed. The magnet component 48 is an example of a magnet coupling that is coupled to a magnet component 49 (not shown) by a magnetic force.

  The blade component 34 is not limited to the case where the magnet components 48 and 49 are installed on a part of the lower side of the body portion 44, for example, and the magnet components 48 and 49 and the blade component 34 are integrally formed of the same member. May be.

  The lid part 36 seals the accommodation hole 38 of the case part 32 in which the blade part 34 is accommodated, and causes the refrigerant 12 to flow into or out of the accommodation hole 38 through, for example, the flow hole 50 formed in the central portion. It is a structural example. Further, the lid part 36 is formed with a bearing part 52 for supporting the shaft part 46 of the blade part 34 at a portion intersecting with the central axis of the accommodation hole 38, for example. The bearing portion 52 is disposed in a part of the flow hole 50, for example.

  <Assembly example of rotating part 30>

  A case component 32 shown in FIG. 4A is an example of a state before the magnet components 48 and 49 and the blade component 34 are installed in the storage hole 38. The housing hole 38 is formed with, for example, a bearing portion 54 that pivotally supports the magnet parts 48 and 49 and the blade part 34 in a central part. The bearing portion 54 is formed at a position where the central axis of the blade component 34 and the case member 32 are orthogonal to each other, and is arranged to face the lid portion 36. Accordingly, the blade part 34 is pivotally supported between the bearing part 54 of the case part 32 and the bearing part 52 of the lid part 36. The diameter L1 of the storage hole 38 is set so that the blade part 34 can be stored and rotated.

  For example, as shown in FIG. 4B, the blade component 34 is accommodated in the accommodation hole 38 when the shaft portion 46 formed at the center is inserted into the bearing portion 54. What is necessary is just to form the diameter L2 of the blade | wing component 34 below the diameter L1 of the storage hole 38, for example. Then, as shown in C of FIG. 4, the lid part 36 is installed in the case part 32 with the bearing part 52 disposed on the shaft part 46 of the blade part 34.

  The rotating component 30 is configured to pump the refrigerant 12 by, for example, centrifugal force, and either a spiral type or a vortex flow type blade component may be used. When used for the turbine 16, the rotating component 30 receives the high-temperature gas-liquid two-phase flow refrigerant 12 from the refrigerant flow portion 40, for example, and collects the flow energy by rotating the blades 42. Then, the refrigerant 12 that has flowed in the turbine 16 along the blade part 34 is caused to flow toward the condensing unit 6 through the forward pipe 8 connected to the flow hole 50 of the lid part 36. Moreover, when using for the rotor 18, the rotation component 30 flows in the refrigerant | coolant 12 condensed by the condensation part 6, for example from the flow hole 50, and pumps it to the refrigerant | coolant flow part 40 side by rotation of the blade | wing 42. As a result, the refrigerant 12 is accelerated to a predetermined flow velocity and is caused to flow to the evaporation unit 4 side.

  <Example of coupling configuration>

  5, 6 and 7 show examples of coupling configurations. The configurations shown in FIGS. 5, 6, and 7 are examples.

  The turbine 16 and the rotor 18 shown in FIG. 5 show a case where, for example, a magnet coupling is used as the coupling 28 to be connected. For example, the turbine 16 and the rotor 18 are arranged such that the bottom surfaces of the rotating parts 30 are in contact with each other or have a certain distance, and the respective central axes are coaxially arranged. In this case, for example, the case where the turbine 16 is arranged upward and the rotor 18 is inverted and arranged downward is shown, but the present invention is not limited to this, and the rotor 18 may be arranged upward.

  In the turbine 16 and the rotor 18, for example, as shown in FIG. 6, the magnet part 48 on the turbine 16 side and the magnet part 49 on the rotor 18 side are close to each other inside the case parts 32, and the influence of the magnetic force of each other. It is in a state to receive.

  As shown in FIG. 7A, the magnet parts 48 and 49 have N-pole and S-pole magnets set to the left and right, for example, with the central portion as a boundary. Then, when the turbine 16 and the rotor 18 are opposed to each other and the turbine 16 is rotated by the flow of the refrigerant 12, the magnet component 48 of the turbine 16 is rotated at a predetermined rotational speed as shown in FIG. And the S pole can be switched within a certain circular range. As a result, the magnet component 49 on the rotor 18 side facing the rotor can be rotated according to the polarity of the magnet component 48 on the turbine 16 side. Thus, the rotor 18 can force the refrigerant 12 to flow by rotating the blades 42 using the flow energy of the refrigerant 12 collected by the turbine 16.

  In addition, although the case where the turbine 16 and the rotor 18 are the same outer diameter is shown, it is not restricted to this. For example, the size of the turbine 16 or the rotor 18 may be varied along with the width of each flow path in order to vary the flow rate of the refrigerant 12 flowing in the forward pipeline 8 or the return pipeline 10. As a result, the rotation from the turbine 16 to the rotor 18 can be set to be transmitted at a specific ratio by the connecting means.

  The turbine 16 or the rotor 18 is not limited to the spiral rotating component 30. As long as the kinetic energy is recovered from the gas-liquid two-phase flow refrigerant 12 flowing at high speed or the refrigerant 12 is forced to flow by the rotation of the blades 42, the swirl type or other types of rotating parts May be used.

  In addition, the cooling device 2 is not limited to the case where, for example, each of the outgoing line 8 and the return line 10 is one. For example, a plurality of forward pipes 8 and a plurality of return pipes 10 may be provided between the evaporator 4 and the condenser 6. In this case, in order to connect the turbine 16 and the rotor 18, the forward pipe 8 and the return pipe 10 may be configured in the same number.

  According to such a configuration, by using the flow energy recovered by the turbine 16 from the vapor flow of the refrigerant 12, the rotor 18 in the return pipe 10 is rotated, so that the heat generating component 14 is directed to the evaporation unit 4 side. The refrigerant 12 can be circulated at an appropriate flow rate according to the state. Since the rotor 18 rotates and circulates the refrigerant 12 according to the vapor flow of the refrigerant 12, the responsiveness of the circulation flow rate is improved with respect to the increase and decrease of the vapor flow due to the temperature change of the heat generating component 14. With the configuration in which the rotor 18 is forced to circulate, the arrangement position of the condensing unit 6 with respect to the evaporation unit 4 is not limited, and the cooling device 2 can be reduced in size and height and the shape of the entire cooling device can be freely set. It becomes.

  [Second Embodiment]

  FIG. 8 shows a configuration example of an electronic device provided with the cooling device according to the second embodiment. The configuration shown in FIG. 8 is an example, and the present invention is not limited to such a configuration.

  An electronic device 60 illustrated in FIG. 8 is an example of the electronic device of the present disclosure, and includes a cooling device 62 in which the evaporation unit 4 is installed on the heat generating component 14 mounted on the circuit board 20. The cooling device 62 is an example of a cooling device according to the present disclosure, and is provided with a heat sink 64 that forms an evaporation unit and a heat exchanger 66 that forms a condensing unit. Between the heat sink 64 and the heat exchanger 66, a circulation path is formed by the return pipe 8 and the return pipe 10 through which the refrigerant 12 having different temperatures and phase states flows.

  Further, a turbine 16 for recovering kinetic energy from the flowing refrigerant 12 is provided on the outgoing pipe 8. A rotor 18 for forcibly flowing the refrigerant 12 by rotation is provided on the return pipe 10. The rotor 18 is disposed coaxially with the turbine 16 and is rotated using the kinetic energy recovered by the turbine 16.

  Further, the cooling device 62 includes, for example, a refrigerant sensor 68 that detects the state of the refrigerant 12, a heat generating component temperature sensor 70 (FIG. 10) that detects the temperature of the heat generating component 14, and a control circuit 72. The refrigerant sensor 68 is an example of a unit that is installed on, for example, the return pipe 10 and detects the state of the refrigerant 12 that flows to the heat sink 64 side. The refrigerant sensor 68 may be provided with a flow sensor or a pressure sensor in addition to a temperature sensor that detects the temperature of the refrigerant 12, for example. For example, a thermistor thermometer may be used as the temperature sensor. The flow sensor may be any sensor that does not impede the flow of the refrigerant 12, and may be a mechanical or electromagnetic sensor.

  The control circuit 72 is an example of means for monitoring and controlling the flow of the refrigerant 12 in the circulation path or the return pipe 10. For example, the control circuit 72 includes a refrigerant sensor 68, a heat generating component temperature sensor 70, the rotor 18, and other functional components. Electrically connected. The control circuit 72 maintains the cooling function for the heat generating component 14 by controlling the circulation amount of the refrigerant 12 based on the detected temperature of the refrigerant 12 and the detected temperature of the heat generating component 14, for example. The control circuit 72 may include a control function unit that performs, for example, cooling control and temperature monitoring of a cooling target, independently in the cooling device 62. The cooling device 62 may use a control function of the electronic device 60 mounted.

  <Cooling device with operating means for rotor>

  FIG. 9 is a diagram illustrating a configuration example of a cooling device including an external driving unit. The configuration shown in FIG. 9 is an example.

  The cooling device 62 shown in FIG. 9 includes, for example, an external driving unit 74 that is installed in the rotor 18 and assists the rotation of the rotor 18. The external drive means 74 is constituted by, for example, a motor driven by external power, an engine, or the like, and applies a rotational force to the rotor 18. The external drive means 74 is mechanically directly connected to the rotor 18 or is electromagnetically connected. This external drive means 74 is connected to the control circuit 72 and is driven in response to a drive control instruction corresponding to the circulating state such as the temperature and flow rate of the refrigerant 12, for example. The external drive means 74 is driven and controlled so that, for example, a circulation amount of the refrigerant 12 is obtained so that at least the heat absorbing portion 22 inside the heat sink 64 is not in a dry-out state.

  For example, the refrigerant 12 flows into the heat absorbing part 22 of the heat sink 64 from the return pipe 10 in a flow state or a jet state. In the circulation control of the refrigerant 12, for example, the refrigerant 12 may be supplied so that a constant amount of refrigerant layer is always formed in the heat absorption unit 22, or the flow rate at which the vapor refrigerant 12 is always filled in the heat absorption unit 22. You may control to.

  <Monitoring the temperature state of heat-generating components>

  For example, as shown in FIG. 10, a temperature sensor 70 using a thermocouple installed between the TIM 26 on the upper surface side of the heat generating component 14 and the heat sink 64 is used for monitoring the temperature of the heat generating component 14. The temperature sensor 70 may be installed at a position where heat generated from the heat generating component 14 can be detected. For example, the temperature sensor 70 is installed at the center on the upper surface side of the heat generating component 14. Further, the temperature sensor 70 is not limited to the one installed outside the heat generating component 14, for example, using a detection value of a thermal diode incorporated in a semiconductor element such as a processor core configured inside the heat generating component 14. May be.

  <About control block>

  FIG. 11 shows a configuration example of a control block of the cooling device. The configuration shown in FIG. 11 is an example.

  The control function of the cooling device 62 is, for example, as shown in FIG. 11, a liquid feeding device 71 to be controlled, and a control unit that outputs monitoring information and instruction information for the cooling state executed by the liquid phase device 71. A circuit 72 is included. The liquid feeding device 71 includes, for example, the heat sink 64 that circulates the refrigerant 12, the turbine 16, the rotor 18, the coupling 28, the heat exchanger 66, the external drive unit 74, etc. of the cooling device 62. In this cooling control, for example, control information for controlling the circulation amount of the refrigerant 12 is output from the control circuit 72 to the liquid phase device 71 so as to maintain the heat generating component 14 at a predetermined temperature.

  The cooling control of the cooling device 62 is, for example, PID (Proportional Integral Derivative) control. In this cooling control, for example, flow rate information of the refrigerant 12 in the return pipe 10 is set as a control variable. This control variable is set based on, for example, temperature information detected by the heat generating component temperature sensor 70, and the flow rate of the refrigerant 12 that can cool the heat generating component 14 to be cooled to a predetermined temperature may be set. The target value is a set value of flow rate information set as a control variable. The target value is, for example, calculation information of the flow rate of the refrigerant 12 necessary for maintaining the heat generating component 14 at the set temperature from the external temperature information of the heat generating component 14 to be cooled, the temperature information of the refrigerant 12, and other information. It is. The setting of the target value may be calculated by, for example, the control circuit 72 or another functional component (not shown). In addition, table information indicating the relationship between the temperature of the heat generating component 14 and the flow rate of the refrigerant 12 is read and used. May be.

  The control circuit 72 uses, for example, drive current information to a motor that is the external drive means 74 as an operation variable that is instruction information for realizing the set flow rate of the refrigerant 12 that is a target value for a control target such as the rotor 18. Is output.

  In the cooling control, feedback control is performed to eliminate the deviation between the control variable and the target value. The control circuit 72 uses a control algorithm for eliminating the deviation, for example, and performs a determination process for adjusting the manipulated variable.

  In addition, in the cooling control, for example, a control variable is changed due to a disturbance due to a temperature change of a cooling target or a cooling unit, thereby disturbing control such as a cooling function or a circulation state of the refrigerant 12. This disturbance is caused, for example, by a change in the amount of heat generated by the heat-generating component 14 that is a cooling target. The disturbance acts on the control object 73 such as the temperature and flow rate of the refrigerant 12 of the liquid feeding device 71. For example, the temperature change of the refrigerant 12, the change of the evaporation amount of the refrigerant 12 in the heat sink 64, or the change of the flow rate of the gas-phase refrigerant 12 For example, the cooling function of the liquid feeding device 71 is changed.

  Therefore, in the cooling control, for example, a target value for realizing the set temperature of the heat generating component 14 and the refrigerant 12 to be cooled, and a control variable of the liquid feeding device 71 that is affected by the cooling process and disturbance based on the control instruction. The process of approximation by feedback control is repeated.

  FIG. 12 shows a configuration example of a computer that performs cooling control. The configuration shown in FIG. 12 is an example.

  The control circuit 72 includes, for example, a processor 80, a RAM (Random Access Memory) 82, and a storage unit 84. For example, the cooling circuit 62 may be provided independently for the control circuit 72, or a processor provided in the electronic device 60 may be used.

  The processor 80 is an example of a unit that performs arithmetic processing for causing a cooling control program or the like stored in the storage unit 84 to function.

  The RAM 82 functions as a work area for executing the cooling control program. The processor 80 executes the cooling control program, and determines the state of the cooling function based on the temperature information of the heat generating component 14, the temperature information of the refrigerant 12, the flow rate information, etc. taken from the refrigerant sensor 68, the heat generating component temperature sensor 70, and the like. And discriminating deviations and setting target values. It also generates and outputs manipulated variables such as motor current.

  The storage unit 84 is composed of, for example, a ROM (Read Only Memory) or a semiconductor memory, and stores a control program such as a cooling control program, as well as temperature information acquired from various sensors, flow rate information of the refrigerant 12, and the like. May be.

  The refrigerant sensor 68 installed in the return pipe 10 may include, for example, a flow sensor 88 and a pressure sensor 89 in addition to the temperature sensor 86 that detects the temperature of the flowing liquid phase refrigerant. Also, the control circuit 72 takes in the detected temperature information from the heat generating component temperature sensor 70. Thereby, the evaporation state of the refrigerant 12 in the heat sink 64, the circulation state of the refrigerant 12 in the cooling device 62, the cooling function, and the like are monitored.

  Then, the control circuit 72 outputs an operation control instruction to, for example, the coupling 28 or a motor that is the external driving means 74, and executes cooling control for maintaining the heat generating component 14 at an appropriate temperature.

  <About cooling control processing>

  FIG. 13 is a flowchart illustrating an example of cooling control. The processing procedure and processing content shown in FIG. 13 are examples.

  The process illustrated in FIG. 13 is an example of the cooling control method or the cooling control program of the present disclosure, and includes a process of outputting an operation variable based on the detected temperature information and adjusting the flow rate of the refrigerant 12 flowing to the heat sink 64 side. .

  In the control circuit 72, for example, the detected temperature information of the liquid refrigerant 12 is acquired from the temperature sensor 86 provided in the refrigerant sensor 68, and a comparison judgment with respect to the target refrigerant temperature is performed (S1). The target refrigerant temperature may be obtained by using, for example, calculation processing by the control circuit 72 or setting information stored in advance, and the temperature of the refrigerant 12 set with respect to the target temperature of the heat generating component 14 based on the cooling function of the refrigerant 12. It is an example. That is, when the detected temperature of the liquid refrigerant 12 is lower than the target refrigerant temperature (YES in S1), the heat absorption function based on the current circulation amount of the refrigerant 12 is satisfied with respect to the heat generation amount of the heat generating component 14. Then, the motor of the external drive means 74 is operated with the “weak” function or stopped (S2).

  In the cooling device 62, the evaporation amount of the refrigerant 12 is determined according to the heat generation temperature of the heat generating component 14, and the kinetic energy recovered by the turbine 16 is determined by the flow rate of the vapor flow of the refrigerant 12. Then, the rotor 18 is rotated by this kinetic energy, and the supply amount of the liquid-phase refrigerant 12 is set. Therefore, when the temperature of the refrigerant 12 is sufficiently lower than the set temperature, the cooling function is maintained without operating the motor.

  Further, when the detected temperature of the refrigerant 12 is higher than the target refrigerant temperature (NO in S1), the process proceeds to the state monitoring of the heat generating component 14, and whether or not the detected temperature of the heat generating component temperature sensor 70 is lower than the allowable temperature. It is judged (S3). The allowable temperature is, for example, a temperature set for each heat generating component 14 in which the heat sink 64 is installed as a cooling target, and is an example of a certain range of temperatures at which the heat generating component 14 can function normally. The information on the allowable temperature is set and registered in advance in the control circuit 72, for example.

  The temperature monitoring target of the heat generating component 14 of this embodiment is, for example, a CPU core, and the CPU core temperature Tj is detected by a temperature sensor 70 installed on the exterior side of the thermal diode or CPU package, and is compared with the allowable temperature. When the detected temperature is lower than the allowable temperature (YES in S3), the motor is operated with the “medium” function setting to adjust the flow rate of the refrigerant 12 toward the heat sink 64 (S4).

  When the detected temperature is higher than the allowable temperature (NO in S3), the motor of the external drive means 74 is operated with the setting of the “strong” function to adjust the flow rate of the refrigerant 12 toward the heat sink 64 (S5) to generate heat. This prevents overheating of the component 14 and dryout of the refrigerant 12 in the heat sink 64.

  This cooling control process is always executed, including when the electronic device 60 is being driven or immediately after it is stopped. Further, the control circuit 72 may include, for example, a determination process execution counter or a timer. Thereby, for example, when the state where the detected temperature of the heat generating component 14 is higher than the allowable temperature has passed a certain number of times or for a certain time, the cooling device 62 is connected to the electronic device 60 in order to avoid damage to the heat generating component 14 and the electronic device 60. You may perform the output of the stop instruction | indication with respect to the apparatus 60, the output of alerting | reporting information, etc.

  In the above cooling control, the driving control of the external driving means 74 is performed based on the detected temperature of the refrigerant 12, but the present invention is not limited to this. For example, the cooling of the refrigerant 12 is performed using the flow sensor 88, the pressure sensor 89, or the like. The control instruction may be output after judging the function or state.

  According to such a configuration, it is possible to perform appropriate flow rate control by monitoring the state of the refrigerant 12 flowing through the cooling device 62 and adjusting the amount of refrigerant supplied to the heat sink 64 based on the monitoring result. Since the circulation amount can be set according to the evaporation flow rate due to the heat absorption of the refrigerant 12 by using the liquid feeding function by the turbine 16 and the rotor 18, the followability of the circulation amount of the refrigerant 12 with respect to the heat generation temperature change can be improved. With the configuration in which the rotor 18 is forcibly circulated, the arrangement position of the heat exchanger 66 with respect to the heat sink 64 is not limited, and the degree of freedom of the shape of the cooling device can be increased along with downsizing and lowering of the cooling device.

  [Third Embodiment]

  FIG. 14 shows a configuration example of an electronic device including the cooling device according to the third embodiment. The configuration shown in FIG. 14 is an example.

  The cooling device 62 installed in the electronic device 60 shows a case where a magnet coupling 90 is used as a means for transmitting the driving force of the external driving means 74 to the rotor 18, for example. The magnet coupling 90 includes, for example, a control mechanism that controls transmission of driving force by the external driving unit 74 in accordance with a cooling function by the refrigerant 12 as cooling control unit.

  <Configuration Example of Rotor 18>

  The rotor 18 is installed, for example, on the lower side of the turbine 16 as shown in FIG. 15, and the impeller 100 (FIG. 16) is arranged coaxially with the blade component 34 inside the turbine 16 as described above. Is done. The rotor 18 receives rotation of the magnet component 48 installed on the blade component 34 of the turbine 16 and the impeller 100 rotates. For example, the impeller 100 is housed in the case component 92 and the rotor 18 is kept sealed by a lid portion 94 installed on the upper side. For example, the turbine 16 may be mounted on the lid 94 and fixed.

  The rotor 18 includes, for example, an inflow hole 96 that takes in the liquid phase refrigerant 12 condensed by the heat exchanger 66 and a discharge hole 98 that pumps the refrigerant 12 toward the heat sink 64 on the side surface of the case component 92.

  The rotor 18 shown in FIG. 16 uses, for example, a cascade (vortex flow) type impeller 100, and the refrigerant 12 taken in from the inflow hole 96 is rotated in the housing portion 102 inside the case component 92 by the rotation of the impeller 100. The pressure is applied by rotating it approximately once, and the pressure is sent to the discharge hole 98 side. In the cascade type impeller 100, for example, a plurality of blades (blades) 106 that push away the refrigerant 12 are arranged around a main body 104 formed in a disk shape. At the center of the impeller 100, for example, a through hole 108 that is pivotally supported by a rotation center axis formed in a lid portion 94 and a storage portion 102 (not shown) is formed. The rotation center axis and the through hole 108 are arranged coaxially with the rotation center of the turbine 16.

  The impeller 100 includes a magnet component 49 on the upper surface side where the turbine 16 is disposed, and a magnet component 110 connected to the external drive unit 74 on the lower surface side. The magnet component 110 is an example of a component of the magnet coupling 90.

  The lid portion 94 is formed with, for example, a through hole 111, and the fastening part 112 passed through the through hole 111 is locked in a locking hole 113 formed in the case part 92 to seal the case part 92.

  The rotor 18 installed in the cooling device 62 is not limited to the cascade type, and may be a rotor having a centrifugal type moving blade or other rotors.

  <Example of rotor drive configuration with magnet coupling>

  FIG. 17 and FIG. 18 show an example of the coupling principle by coupling the external drive means and the rotor. The configurations shown in FIGS. 17 and 18 are examples.

  The external drive means 74 is comprised by the power means to rotationally drive, such as a motor and an engine, for example, and is provided with the rotating shaft 116 which outputs rotational power. As shown in FIGS. 17A and 18A, the rotating shaft 116 includes a coupling mechanism 118 that transmits the rotational driving force output by the external driving means 74 to the rotor 18 side. The coupling mechanism 118 is an example of a component part of the magnet coupling 90, and transmits the rotational force of the external drive means 74 by a connection function for connecting the external drive means 74 and the rotor 18 or a clutch function for releasing the connection. It functions as a limiting mechanism that limits The coupling mechanism 118 is connected to the control circuit 72, for example, and operates based on a control instruction. The coupling mechanism 118 includes magnetic force generation means for connecting the magnet component 49 on the rotor 18 side by magnetic force. The external drive means 74 is a means for increasing the amount of rotation of the rotor 18 and assisting the pressure-feeding function of the refrigerant 12, and the rotation direction may be set according to the rotation direction of the turbine 16.

  For example, as shown in FIG. 17B, in the rotor 18, the magnet component 49 rotates and the impeller 100 rotates as the N pole and the S pole are repeatedly reversed by the rotation of the magnet component 48 of the turbine 16. To do. In addition, the coupling mechanism 118 that operates the magnetic force generating means in conjunction with the driving on the external driving means 74 side, for example, generates N-pole and S-pole magnetism around the center and rotates. The magnet component 110 on the rotor 18 side rotates in conjunction with the rotation of the magnetic force generated in the coupling mechanism 118, thereby giving a driving force to the impeller 100. The impeller 100 is rotated at a predetermined rotational speed by the driving force from the turbine 16 and the driving force from the external driving means 74, and pumps the refrigerant 12.

  As shown in FIG. 18B, when the coupling mechanism 118 stops the magnetic force generating means in conjunction with, for example, a control instruction from the control circuit 72 or the stop of the external driving means 74, the magnetic force disappears. Thereby, the application of the driving force to the magnet component 110 on the rotor 18 side stops.

  <Example of configuration of magnet coupling>

  19 and 20 show a configuration example of the coupling mechanism. The configuration shown in FIGS. 19 and 20 is an example.

  The coupling mechanism 118 includes a field part 120 and a rotor part 122, for example. The field portion 120 is means for fixing the coupling mechanism 118 to, for example, a case or a support member (not shown), and a locking hole for locking a fixing component is formed on the peripheral side.

  The rotor portion 122 is an example of a component that rotates by receiving the rotational power of the external driving means 74, and a locking hole 124 that locks the rotating shaft 116 is formed at the center portion. For example, a keyway (not shown) may be formed in the locking hole 124. The rotor portion 122 is provided with a bearing 126 that prevents rotation transmission at a boundary portion with the field portion 120. In addition, an electromagnetic coil 128 formed in a ring shape is installed inside the rotor portion 122, for example, along the periphery of the locking hole 124. The electromagnetic coil 128 is an example of magnetic force generating means, and includes a terminal 130 connected to, for example, a control circuit 72 or a power supply circuit as shown in FIG. The electromagnetic coil 128 is not limited to a single ring-shaped member, and a plurality of block-shaped parts having a certain size may be installed in a ring shape.

  In the cooling control using the external drive unit 74, for example, the electromagnetic coil 128 is energized, and the electromagnetic coil 128 is rotated along with the rotation of the rotor 122 to transmit the rotational driving force to the magnet component 110.

  The coupling mechanism 118 is not limited to a limiting mechanism that connects or disconnects the external drive unit 74 and the rotor 18, and may include a unit that switches a transmission ratio to the rotor 18.

  <About cooling control>

  FIG. 21 shows a processing example of cooling control using magnet coupling. The processing content and processing procedure shown in FIG. 21 are examples.

  The process illustrated in FIG. 21 is an example of the cooling control method or the cooling control program of the present disclosure. In addition to controlling the operation of the external drive unit 74 based on the detected temperature information, the control process for connecting or disconnecting the external drive unit 74 and the rotor 18 is included.

  The control circuit 72 acquires the detected temperature information of the liquid refrigerant 12 from the temperature sensor 86 provided in the refrigerant sensor 68, for example, and makes a comparison determination with respect to the target refrigerant temperature (S11). When the detected temperature of the liquid refrigerant 12 is lower than the target refrigerant temperature (YES in S11), it is determined that the heat absorption function by the refrigerant 12 is satisfied, the motor that is the external driving means 74 is stopped, and the electromagnetic coil 128 is used. Energization of the motor is stopped, and the motor and the rotor 18 are separated (S12).

  When the detected temperature of the refrigerant 12 is higher than the target refrigerant temperature (NO in S11), the process proceeds to temperature monitoring inside the heat generating component 14, and whether or not the detected temperature of the heat generating component temperature sensor 70 is lower than the allowable temperature. Determination is made (S13). The temperature monitoring target of the heat generating component 14 is, for example, a CPU core, and the CPU core temperature Tj is detected by a temperature sensor 70 installed on the exterior side of the thermal diode or the CPU package and compared with the allowable temperature. When the detected temperature is lower than the allowable temperature (YES in S13), the motor of the external drive means 74 is operated with the “weak” function setting, and the electromagnetic coil 128 is energized to connect the motor and the rotor (S14). Thereby, the flow volume of the refrigerant | coolant 12 to the heat sink 64 side is adjusted.

  When the detected temperature is higher than the permissible temperature (NO in S13), the motor of the external drive means 74 is operated with the “strong” function setting, and the electromagnetic coil 128 is energized to connect the motor and the rotor (S15). This adjusts the flow rate of the refrigerant 12 toward the heat sink 64 to prevent overheating of the heat generating component 14 and dryout of the refrigerant 12 in the heat sink 64.

  The cooling control is not limited to the one that controls the driving of the external driving means 74 based on the detected temperature of the refrigerant 12 as described above. For example, the cooling control of the refrigerant 12 is performed using the flow rate sensor 88 or the pressure sensor 89. A control instruction may be output after judging the cooling function or state.

  According to such a configuration, the external drive means 74 and the rotor 18 can be connected to or disconnected from each other by a magnetic force, so that the sealing inside the rotor can be secured and the set flow rate of the refrigerant 12 can be secured. Can increase the sex.

  The features of each embodiment described above are listed below.

  (1) The cooling device 2 has at least two series of flow paths for the refrigerant 12. One series is a flow path through which the steam or gas-liquid two-phase refrigerant 12 flows, and includes a turbine 16 that converts the kinetic energy of the flowing refrigerant 12 into rotational energy. The other series is a flow path that includes the rotor 18 that guides the liquid refrigerant 12 to the heat sink 64 that is the evaporation unit 4. The turbine 16 and the rotor 18 are connected by a coupling 28, and a cooling system that circulates the refrigerant 12 to the cooling target side is formed by transmitting rotational motion from the turbine 16 to the rotor 18.

  (2) The cooling device 2 constitutes a circulating cooling system for an electronic device including an electronic component made of a semiconductor element.

  (3) The cooling device 2 enhances the cooling function by efficiently transferring heat using the phase change caused by the evaporation and condensation of the refrigerant 12. Specifically, the inside of the heat sink 64 is filled with the liquid refrigerant 12 and saturated steam, and when the heat generated in the heat generating component 14 is transmitted to the heat sink 64, the liquid refrigerant 12 evaporates and becomes the vapor refrigerant 12. To cool the refrigerant 12. The vapor refrigerant 12 is thermally transferred to the condensing unit 6 side by a phase change of the refrigerant and a high-speed vapor flow by a thermosiphon action. In the condensation part 6, the vapor | steam of the refrigerant | coolant 12 changes into a liquid phase by radiating and condensing with the heat exchanger.

  (4) According to the cooling device 2, since the refrigerant 12 is forced to flow by the turbine 16 and the rotor 18, the refrigerant 12 is not circulated using gravity, so the installation position and installation of the heat sink 64 with respect to the condensing unit 6 are not performed. The degree of freedom of the state is increased. Further, since the recirculation amount of the liquid-phase refrigerant 12 does not depend on the flow rate of the gas-phase refrigerant, the dry-out phenomenon in which the evaporation unit 4 is dried can be prevented, and the cooling function can be improved and the reliability of the electronic device can be improved.

  [Other Embodiments]

  (1) In the above embodiment, the coupling 28 that transmits power from the turbine 16 to the rotor 18 is conducted at a set drive ratio. However, the present invention is not limited to this. The coupling 28 may include switching means for switching the drive ratio between the turbine 16 and the rotor 18, for example. The coupling 28 including the switching unit may include a clutch mechanism using an electromagnetic coupling whose transmission efficiency can be changed by, for example, a mechanical gear structure or an energization amount.

  The coupling 28 may be configured to increase the number of rotations of the rotor 18 with respect to the number of rotations of the rotor 16, for example, or may be configured to decrease the number of rotations by a gear mechanism or the like. . This reduction in the number of rotations of the rotor 18 is not limited to, for example, control for reducing the flow rate of the refrigerant 12 flowing through the return pipe 10. For example, the case where the flow rate on the return line 10 side is maintained by the flow energy of the vapor refrigerant 12 flowing on the forward line 8 side is also included.

  In the cooling control of the cooling device 2 using the coupling 28 having the clutch mechanism, for example, as shown in FIG. 22, detection information by detecting the flow rate of the refrigerant 12 (S21) and detecting the temperature of the refrigerant 12 and the heat generating component 14 (S22). Based on the above, the circulation flow rate of the refrigerant 12 is determined (S23). When the circulation flow rate is appropriate and the cooling function is maintained (YES in S23), the flow state is maintained. Further, when the circulating flow rate is not appropriate, such as when the temperature of the refrigerant 12 is high (NO in S23), drive control such as driving of the motor of the external drive means 74 is performed, and the switching means of the coupling 28 is switched. The rotation transmission ratio to the rotor 18 is changed. Thereby, the flow rate of the liquid refrigerant 12 in the return pipe 10 can be adjusted.

  According to such a configuration, direct coupling and differential between the turbine 16 and the rotor 18 are made possible by coupling, so that the liquid recirculation amount does not depend on the vapor amount, and the liquid refrigerant 12 is always controlled and supplied to the evaporation unit 4. And stable cooling becomes possible. Further, the configuration in which the rotor 18 is autonomously operated by the rotation of the turbine 16 can avoid a state in which the cooling function of the electronic device does not operate, and the reliability of the electronic device equipped with the cooling device can be improved.

  (2) In the above embodiment, the electromagnetic coupling using the magnet is used as the coupling for transmitting the rotational energy recovered by the turbine 16 to the rotor 18, but the present invention is not limited to this. For example, the blade part 34 of the turbine 16 and the rotor 18 may be mechanically connected by a connecting shaft penetrating the case part 32 to transmit the rotation. In this case, the case component 32 may be provided with a water stop component that allows the connecting shaft to rotate with respect to, for example, a through portion of the connecting shaft.

  (3) In the above embodiment, the configuration in which the rotor 18 is rotated by the external driving means 74 is shown, but the present invention is not limited to this. For example, the cooling device 2 may provide a pump on the return pipe 10 to cause the refrigerant 12 to flow. According to such a configuration, the low-temperature refrigerant 12 can be forced to flow by pumping together with the rotor 18 that uses the kinetic energy of the vapor refrigerant recovered by the turbine 16 described above. Thereby, the refrigerant 12 having a necessary flow rate can be supplied to the evaporation unit 4 side regardless of the flow rate of the evaporated refrigerant 12. Further, by using a pump, for example, when the temperature of the evaporation unit 4 is rapidly heated, the low-temperature refrigerant 12 is forcibly moved to the evaporation unit 4 side even when the refrigerant flow rate in the forward pipe 8 is low. Since it can be flown, it can be prevented from temporarily becoming a dry-out state. Further, the convection of the refrigerant 12 can be promoted in the cooling device 2, the load when the rotation of the turbine 16 and the rotor 18 is increased can be suppressed, and the optimum flow rate control can be performed quickly.

  (4) Although the above embodiment does not show the adjustment control of the amount of the refrigerant 12 filled in the cooling device 2 and its means, the cooling device 2 adjusts the flow amount of the refrigerant 12 on the pipeline, for example. A storage tank may be provided. Then, the refrigerant 12 may be increased or decreased according to the temperature state on the evaporation unit 4 side or the flow state of the refrigerant 12. According to such a configuration, for example, the flow rate of the refrigerant 12 can be increased even when the evaporation unit 4 is at or above the allowable temperature and cannot be cooled to an appropriate temperature using the external drive unit 74. It becomes possible to prevent the occurrence of a dry-out state.

  Next, the following additional notes will be disclosed with respect to the embodiment including the above-described examples. The present invention is not limited to the following supplementary notes.

(Additional remark 1) The evaporation part which is installed in a heat-emitting component and evaporates the refrigerant | coolant with which it was filled by heat_generation | fever of this heat-emitting component,
A condensing part that takes in at least the evaporated refrigerant and exchanges heat to condense;
A first conduit for flowing the refrigerant flowing by evaporation in the evaporation section to the condensation section;
A second conduit for flowing the refrigerant condensed in the condensing unit to the evaporating unit;
A turbine installed in the first pipe and rotating in contact with the flowing refrigerant;
A rotor that rotates based on the rotation of the turbine and flows the refrigerant in the second pipe;
A cooling device comprising:

  (Additional remark 2) The said rotor is arrange | positioned coaxially with the said turbine, It rotates using the kinetic energy which generate | occur | produces by rotation of the said turbine, The cooling device of Additional remark 1 characterized by the above-mentioned.

  (Additional remark 3) The said rotor is connected with the said turbine through the connection means which can transmit rotation of the said turbine by a specific ratio, The additional remark 1 or Additional remark 2 characterized by the above-mentioned. Cooling system.

  (Supplementary note 4) The cooling device according to any one of supplementary notes 1 to 3, wherein the refrigerant flowing through the first pipe is a two-phase flow including a gas phase and a liquid phase.

(Appendix 5) The condensing unit includes a heat exchanger,
The cooling device according to any one of appendix 1 to appendix 4, wherein the refrigerant taken in by the heat exchanger is subjected to heat exchange and condensed into a liquid phase.

(Appendix 6) Further, external drive means for rotating the rotor;
A control unit that controls the flow rate of the refrigerant that flows into the second pipe;
With
The cooling device according to any one of appendix 1 to appendix 5, wherein the control unit controls a drive amount of the external drive unit.

  (Supplementary note 7) The cooling device according to supplementary note 6, further comprising a limiting mechanism that is installed between the external driving unit and the rotor and limits transmission of driving force of the external driving unit.

  (Supplementary note 8) Further, any one of Supplementary notes 1 to 7, further comprising switching means that is installed between the turbine and the rotor and switches a rotation amount of the rotor with respect to a rotation amount of the turbine. A cooling device according to claim 1.

  (Supplementary Note 9) The external drive means is constituted by a drive motor connected to the rotor, and the rotor is rotated by the drive motor to forcibly flow the refrigerant in the second conduit. The cooling device according to appendix 6 or appendix 7.

(Additional remark 10) Furthermore, the temperature detection means which detects the temperature of any one or both of the said heat-emitting component and the said refrigerant | coolant is provided,
The control unit controls either one or both of the external driving unit and the switching unit based on the temperature detected by the temperature detecting unit to adjust the flow rate of the refrigerant. The cooling device according to any one of 9.

(Additional remark 11) Furthermore, the flow rate detection means which detects the flow volume of the said refrigerant | coolant is provided,
The controller controls at least one of the external driving unit and the switching unit based on at least the detected flow rate of the refrigerant, and controls the flow rate of the refrigerant flowing through the second pipeline.
The cooling device according to any one of appendix 7 to appendix 10, characterized in that.

(Additional remark 12) The evaporation part which is installed in a heat-emitting component and evaporates the refrigerant filled inside by heat generation of the heat-generating component,
A condensing part that takes in at least the evaporated refrigerant and exchanges heat to condense;
A first conduit for flowing the refrigerant flowing by evaporation in the evaporation section to the condensation section;
A second conduit for flowing the refrigerant condensed in the condensing unit to the evaporating unit;
A turbine installed in the first pipe and rotating in contact with the flowing refrigerant;
A rotor that rotates based on the rotation of the turbine and flows the refrigerant in the second pipe;
An external drive means for rotating the rotor;
A control unit that controls the flow rate of the refrigerant that flows into the second pipe;
With
The electronic device according to claim 1, wherein the control unit controls driving of the external driving unit to control a flow rate of the refrigerant.

(Additional remark 13) Furthermore, the temperature detection means which detects the temperature of any one or both of the said heat-emitting component and the said refrigerant | coolant is provided,
The appendix 12 is characterized in that the control unit controls either one or both of the external driving unit and the switching unit based on the temperature detected by the temperature detecting unit to adjust the flow rate of the refrigerant. Electronic devices.

(Additional remark 14) Furthermore, the flow rate detection means which detects the flow volume of the said refrigerant | coolant is provided,
The controller controls at least one of the external driving unit and the switching unit based on at least the detected flow rate of the refrigerant, and controls the flow rate of the refrigerant flowing through the second pipeline.
14. The electronic device according to appendix 12 or appendix 13, characterized by that.

(Additional remark 15) The refrigerant | coolant with which the inside was filled by the heat_generation | fever of the heat generating component in the evaporation part installed in the heat generating component is evaporated,
At least the evaporated refrigerant is taken in, condensed by exchanging heat in the condensing part,
Flowing the refrigerant flowing by evaporation in the evaporation section through the first conduit to the condensation section;
Flowing the refrigerant condensed in the condensing unit through the second pipe line to the evaporating unit;
Rotating the turbine installed in the first pipeline in contact with the flowing refrigerant;
Rotating the rotor based on the rotation of the turbine to flow the refrigerant in the second conduit;
The cooling method characterized by including a process.

(Supplementary Note 16) The rotor is rotated by external driving means,
Controlling the driving amount of the external driving means by the control unit to control the flow rate of the refrigerant flowing in the second pipe line;
The cooling method according to appendix 15, wherein the method includes a process.

  (Supplementary note 17) The supplementary note 15 or supplementary note 16, further includes a process of switching the rotation amount of the rotor with respect to the rotation amount of the turbine by a switching unit installed between the turbine and the rotor. The cooling method as described.

(Supplementary note 18) Further, the temperature detecting means detects the temperature of one or both of the heat generating component and the refrigerant,
Controlling either one or both of the external drive means and the switching means based on the temperature detected by the temperature detection means to adjust the flow rate of the refrigerant;
The cooling method according to any one of appendix 15 to appendix 17, characterized by including a treatment.

(Supplementary note 19) Further, the flow rate of the refrigerant is detected by a flow rate detection means,
Based on at least the detected flow rate of the refrigerant, either one or both of the external drive unit and the switching unit are operated to control the flow rate of the refrigerant flowing in the second pipe line.
The cooling method according to any one of appendix 15 to appendix 18, characterized by including a treatment.

As described above, the preferred embodiments of the present invention have been described. However, the present invention is not limited to the above description, and the gist of the invention described in the claims or disclosed in the specification. It goes without saying that various modifications and changes can be made by those skilled in the art based on the above, and such modifications and changes are included in the scope of the present invention.

2 and 62 Cooling device 4 Evaporating section 6 Condensing section 8 Forward pipe 10 Return pipe 12 Refrigerant 14 Heating component 16 Turbine 18 Rotor 20 Circuit board 22 Heat absorbing section 24, 60 Electronic device 28 Coupling 32, 92 Case component 34 Blade component DESCRIPTION OF SYMBOLS 40 Refrigerant flow part 42 Blade | wing 48, 49, 110 Magnet part 50 Flow hole 52, 54 Bearing part 64 Heat sink 66 Heat exchanger 68 Refrigerant sensor 70 Heat generating part temperature sensor 71 Liquid feeder 72 Control circuit 74 External drive means 80 Processor 82 RAM
84 Storage section 86 Temperature sensor 88 Flow sensor 89 Pressure sensor 90 Magnet coupling 100 Impeller 106 Blade 108, 111 Through hole 116 Rotating shaft 118 Coupling mechanism 120 Field section 122 Rotor section 124 Locking hole 128 Electromagnetic coil 130 Terminal

Claims (6)

An evaporating unit that is installed in the heat generating component and evaporates the refrigerant filled therein by the heat generated by the heat generating component;
A condensing part that takes in at least the evaporated refrigerant and exchanges heat to condense;
A first conduit for flowing the refrigerant flowing by evaporation in the evaporation section to the condensation section;
A second conduit for flowing the refrigerant condensed in the condensing unit to the evaporating unit;
A turbine installed in the first pipe and rotating in contact with the flowing refrigerant;
A rotor that rotates based on the rotation of the turbine and flows the refrigerant in the second pipe;
An external driving means that is installed in the rotor and applies rotational force to assist the rotation of the rotor;
First temperature detecting means for detecting the temperature of the refrigerant flowing through the second pipe;
Second temperature detecting means for detecting the temperature of the heat generating component;
The temperature of the refrigerant detected by the first temperature detecting means, said determining whether to operate the external drive means, said external driving means by the temperature of the heating part detected by the second temperature detecting means A controller that controls the flow rate of the refrigerant that is caused to flow and flow into the second pipe,
A cooling device comprising:   The cooling device according to claim 1, wherein the rotor is connected to the turbine through connection means capable of transmitting the rotation of the turbine at a specific ratio.   The control unit increases or decreases the driving amount of the external driving unit based on whether the temperature detected by the second temperature detecting unit is equal to or higher than an allowable temperature set for the heat generating component. The cooling device according to claim 1 or 2.

And further comprising a flow rate detecting means for detecting a flow rate of the refrigerant flowing through the second pipe line,
4. The cooling device according to claim 1, wherein the control unit adjusts a driving amount of the external driving unit according to a detected flow rate of the flow rate detecting unit. 5. An evaporating unit that is installed in the heat generating component and evaporates the refrigerant filled therein by the heat generated by the heat generating component;
A condensing part that takes in at least the evaporated refrigerant and exchanges heat to condense;
A first conduit for flowing the refrigerant flowing by evaporation in the evaporation section to the condensation section;
A second conduit for flowing the refrigerant condensed in the condensing unit to the evaporating unit;
A turbine installed in the first pipe and rotating in contact with the flowing refrigerant;
A rotor that rotates based on the rotation of the turbine and flows the refrigerant in the second pipe;
An external driving means that is installed in the rotor and applies rotational force to assist the rotation of the rotor;
First temperature detecting means for detecting the temperature of the refrigerant flowing through the second pipe;
Second temperature detecting means for detecting the temperature of the heat generating component;
The temperature of the refrigerant detected by the first temperature detecting means, said determining whether to operate the external drive means, said external driving means by the temperature of the heating part detected by the second temperature detecting means A controller that controls the flow rate of the refrigerant that is caused to flow and flow into the second pipe,
An electronic device comprising: Evaporate the refrigerant filled inside by heat generation of the heat generating component in the evaporation section installed in the heat generating component,
At least the evaporated refrigerant is taken in, condensed by exchanging heat in the condensing part,
Flowing the refrigerant flowing by evaporation in the evaporation section through the first conduit to the condensation section;
Flowing the refrigerant condensed in the condensing unit through the second pipe line to the evaporating unit;
Rotating the turbine installed in the first pipeline in contact with the flowing refrigerant;
The rotor is rotated based on the rotation of the turbine to flow the refrigerant in the second pipe line,
Detecting the temperature of the refrigerant flowing through the second pipe;
Detecting the temperature of the heat generating component;
The temperature of the refrigerant it detects, determines whether to operate the external drive means for assisting the rotation of the rotor by applying a rotational force is placed on the rotor,
A cooling method comprising: controlling the flow rate of the refrigerant to be flown into the second conduit by driving and adjusting the external driving means according to the detected temperature of the heat generating component.

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