Cooling system, indoor unit of cooling system, electronic equipment and cooling method of cooling system

Abstract

The invention discloses an indoor unit of a cooling system. The indoor unit comprises an access port and an access port, the first heat exchanger is used for cooling the target chamber, and an inlet of the first heat exchanger communicates with the access port; the second heat exchanger is used for exchanging heat for at least part of heating equipment in the target cavity, the access port bypasses the first heat exchanger and communicates with an inlet of the second heat exchanger, and an outlet of the second heat exchanger communicates with the access port; the combination valve can enable the outlet of the first heat exchanger to bypass the second heat exchanger to be communicated to the connecting outlet in a first working state; when the combination valve is in the second working state, the outlet of the first heat exchanger communicates with the inlet of the second heat exchanger. And the problem that the working efficiency of the cooling system is poor due to the change of the environment temperature can be effectively solved. The invention further discloses electronic equipment comprising the cooling system inner unit, a cooling system and a cooling method of the cooling system adopting the same cooling method as the cooling system inner unit.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment cooling, and more specifically, to a cooling system internal unit, an electronic device including the cooling system internal unit, a cooling system including the cooling system internal unit, and a cooling system cooling method using the same cooling method as the cooling system internal unit. Background Art

[0002] At present, the main air conditioners in data centers still use the traditional method of converting electrical energy into mechanical energy for cooling, such as using a mechanical compression refrigeration system. In actual use, the temperature difference of the natural environment will change greatly, and blindly using a single cooling method will cause the actual cooling power consumption to be very large, the cooling system efficiency is low, and the cooling effect is not good.

[0003] In the process of realizing the invention, the inventors found that there are at least the following problems in the prior art: the problem of poor working efficiency of the cooling system caused by changes in ambient temperature. Summary of the invention

[0004] In view of this, the first object of the present invention is to provide a cooling system internal unit, which can effectively solve the problem of poor working efficiency of the cooling system caused by changes in ambient temperature. The second object of the present invention is to provide an electronic device including the above-mentioned cooling system internal unit. The third object of the present invention is to provide a cooling system including the above-mentioned cooling system internal unit. The fourth object of the present invention is to provide a cooling system cooling method that adopts the same cooling method as the above-mentioned cooling system internal unit.

[0005] In order to achieve the above first object, the present invention provides the following technical solutions:

[0006] A cooling system internal unit, comprising:

[0007] Access inlet, access outlet;

[0008] a first heat exchanger, for cooling the target chamber, wherein an inlet of the first heat exchanger is in communication with the access port;

[0009] A second heat exchanger, used for exchanging heat with at least part of the heat generating equipment in the target chamber, wherein the inlet is connected to the inlet of the second heat exchanger bypassing the first heat exchanger, and the outlet of the second heat exchanger is connected to the inlet;

[0010] A combination valve, in a first working state, the combination valve can connect the outlet of the first heat exchanger to the inlet bypassing the second heat exchanger; in a second working state, the combination valve can connect the outlet of the first heat exchanger to the inlet of the second heat exchanger.

[0011] In the above-mentioned cooling system internal machine, when in use, the first heat exchanger is arranged at the target chamber to cool the target chamber, and the second heat exchanger is also arranged at the target chamber, but it can be set corresponding to the high-heating equipment in the target chamber to cool the high-heating equipment more directly. When the temperature of the target chamber is high, the first working state is selected to work. When the temperature of the target chamber is low, the second working state is selected to work so that the cooling fluid flowing out of the outlet of the first heat exchanger can enter the second heat exchanger to cool the high-heating equipment in the second heat exchanger. In the above-mentioned cooling system internal machine, it is considered that the temperature difference between the ambient temperature of the target chamber and the high-heating equipment is not constant, and sometimes the difference is relatively large. At this time, the temperature of the cooling fluid flowing out of the outlet of the first heat exchanger will not be too high, at least equivalent to the high-heating equipment, and cooling can be achieved. Then, the cooling fluid flowing out of the outlet of the first heat exchanger is supplied to the second heat exchanger, which can well avoid the outlet cooling fluid temperature being too low, and can achieve sufficient heat absorption and improve work efficiency. In summary, the internal unit of the cooling system can effectively solve the problem of poor working efficiency of the cooling system caused by changes in ambient temperature.

[0012] In some technical schemes, the combination valve includes a two-way valve and a three-way valve; the outlet of the first heat exchanger is connected to the access port through the two-way valve; the inlet of the second heat exchanger is connected to the total outlet of the three-way valve; the outlet of the first heat exchanger is connected to the first inlet of the three-way valve, and the access port is connected to the second inlet of the three-way valve; the three-way valve has a first open state and a second open state; in the first open state, the first inlet and the total outlet of the three-way valve are closed, and the second inlet and the total outlet of the three-way valve are opened; in the second open state, both the first inlet and the second inlet are opened to the total outlet of the three-way valve.

[0013] In some technical solutions, when the three-way valve is in the second open state, the opening degree of the first inlet is smaller than the opening degree of the second inlet.

[0014] In some technical solutions, when the two-way valve is closed and the three-way valve is in the second open state: the opening degree of the first inlet is 30%; and the opening degree of the second inlet is 70%.

[0015] In some technical schemes, a first three-way structure and a second three-way structure are included; the three interfaces of the first three-way structure are respectively connected to the second inlet, the inlet of the first heat exchanger and the access port; the three interfaces of the second three-way structure are respectively connected to the first inlet, the two-way valve and the outlet of the first heat exchanger; the channel between the first three-way structure and the access port is provided with a first nozzle; the channel between the second three-way structure and the outlet of the first heat exchanger is provided with a first temperature sensor and a second nozzle; and a second temperature sensor is provided between the inlet of the first heat exchanger and the first three-way structure.

[0016] In some technical solutions, a third three-way structure is also included, and the three interfaces of the third three-way structure are respectively connected to the two-way valve, the outlet of the second heat exchanger and the connecting port; a third temperature sensor and a third nozzle are arranged between the outlet of the second heat exchanger and the third three-way structure.

[0017] In some technical solutions, a flat plate heat pipe is also included, and the second heat exchanger is a liquid-cooled cold plate. The liquid-cooled cold plate and the flat plate heat pipe are arranged in a one-to-one correspondence and transfer heat.

[0018] In some technical solutions, a plurality of the liquid-cooled cold plates are connected in parallel, and a switch valve is provided on the channel of each of the liquid-cooled cold plates; and the flat plate heat pipe is a micro-nano heat pipe.

[0019] In order to achieve the above second purpose, the present invention also provides an electronic device, which includes any one of the above cooling system internal units, and also includes an equipment cabinet, a first heating device and a second heating device, wherein the first heating device and the second heating device are both arranged in the equipment cabinet; and in a working state, the heating power of the first heating device is higher than the heating power of the second heating device; the first heat exchanger of the internal unit is arranged at the equipment cabinet to cool the cabinet cavity of the equipment cabinet, and the second heat exchanger of the internal unit is arranged at the first heating device to cool the first heating device. Since the above cooling system internal unit has the above technical effects, the electronic device having the cooling system internal unit should also have corresponding technical effects.

[0020] In order to achieve the third objective, the present invention further provides a cooling system, which includes any one of the above-mentioned cooling system internal units, and also includes an external unit, wherein the external unit is provided with a cooling device, the inlet of the cooling device is connected to the outlet of the cooling system internal unit, and the outlet of the cooling device is connected to the inlet of the cooling system internal unit. Since the above-mentioned cooling system internal unit has the above-mentioned technical effects, a cooling system having the cooling system internal unit should also have corresponding technical effects.

[0021] In order to achieve the third objective, the present invention further provides a cooling method for a cooling system, comprising the following steps: obtaining the outlet temperature of the first heat exchanger; when the outlet temperature of the first heat exchanger is higher than the first preset temperature, the cooling fluid flowing out of the first heat exchanger bypasses the second heat exchanger to flow to the cooling device, and a part of the cooling fluid flowing out of the cooling device enters the first heat exchanger, and the other part bypasses the first heat exchanger to enter the second heat exchanger, wherein the first heat exchanger is used to cool the entire cabinet cavity of the equipment, and the second heat exchanger is used to cool some of the heating equipment in the cabinet cavity of the equipment; when the outlet temperature of the first heat exchanger is lower than the second preset temperature, the cooling fluid flowing out of the first heat exchanger passes through the second heat exchanger to flow to the cooling device, and a part of the cooling fluid flowing out of the cooling device enters the first heat exchanger, and the other part bypasses the first heat exchanger to enter the second heat exchanger, wherein the first preset temperature is not lower than the second preset temperature. The cooling method of the cooling system using the same cooling method as the above-mentioned cooling system internal unit should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of an internal unit of a cooling system in a first working state of a combination valve provided by an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the structure of an internal unit of a cooling system in a second working state of a combination valve provided by an embodiment of the present invention.

[0025] The following are marked in the accompanying drawings:

[0026] Indoor unit 100, outdoor unit 200, equipment cabinet 300;

[0027] Inlet 1, outlet 2, first heat exchanger 3, second heat exchanger 4, target chamber 5, first heating element 6, combination valve 7, first three-way structure 8, second three-way structure 9, third three-way structure 10, first nozzle 11, second nozzle 12, third nozzle 14, first temperature sensor 15, second temperature sensor 16, third temperature sensor 17, fourth temperature sensor 18, fifth temperature sensor 19, flat heat pipe 20, cold zone equipment 21, drive pump 22, parallel channel 23, electric three-way valve 24, exhaust valve 25, liquid inlet 26, liquid outlet 27, fourth three-way structure 28, drain valve 29;

[0028] Two-way valve 71 , three-way valve 72 , first inlet 721 , second inlet 722 , and total outlet 723 .

[0029] The arrows indicate the flow direction of the cooling fluid, and × indicates that the path is blocked. DETAILED DESCRIPTION

[0030] The embodiment of the present invention discloses an internal unit of a cooling system, so as to effectively solve the problem of poor working efficiency of the cooling system caused by changes in ambient temperature.

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 2 , Figure 1 A schematic diagram of the structure of an internal unit of a cooling system in a first working state of a combination valve provided by an embodiment of the present invention; Figure 2 A schematic diagram of the structure of an internal unit of a cooling system in a second working state of a combination valve provided by an embodiment of the present invention.

[0033] In some embodiments, this embodiment provides a cooling system internal unit 100, which is mainly set in the device to be radiated, such as a cabinet installed in an electronic device and other equipment. The cooling system internal unit 100 mainly absorbs heat through the introduced low-temperature fluid, and then the low-temperature fluid is heated to a higher temperature fluid and then exported. The core of the cooling system external unit 200 is the cooling device 21, which cools down the higher temperature fluid and then guides it to the cooling system internal unit 100 again.

[0034] In some embodiments, the cooling system internal unit 100 mainly includes an inlet 1, an outlet 2, a combination valve 7, a first heat exchanger 3, and a second heat exchanger 4. In some specific applications, the first heat exchanger 3 is used to dissipate heat in the entire cabinet, so the first heat exchanger 3 can be called a cabinet-level heat exchanger or a cabinet-level cooler; the second heat exchanger 4 is used to dissipate heat for electrical components with higher heating power, so the second heat exchanger 4 can be called a device-level heat exchanger or a device-level cooler. The heat exchanger dissipates heat for the corresponding part of the heat dissipation device, which can be directly in contact with the corresponding part to absorb heat and then dissipate the heat for the corresponding part; it can also cool the air body to obtain a low-temperature air body, and then supply the low-temperature air body to the corresponding part to dissipate the heat for the corresponding part.

[0035] The first heat exchanger 3 is used to cool down the target chamber 5, that is, to dissipate heat from the target chamber 5. The target chamber 5 is generally a cabinet chamber of an electronic equipment cabinet 300. In the heat dissipation method, for example, the first heat exchanger 3 is arranged at the air inlet of the target chamber 5, so that when the external air enters the target chamber 5 from the air inlet, the heat of the external air will be absorbed by the cooling fluid in the first heat exchanger 3 to reduce the temperature. The cooled air enters the target chamber 5 to absorb heat from the internal heating part to achieve cooling. Of course, when the target chamber 5 is in a larger chamber, the first heat exchanger 3 can be arranged at the air outlet of the target chamber 5. After the air outside the chamber enters the target chamber 5, it absorbs heat and heats up, and then is discharged from the air outlet. When discharged from the air outlet, it is cooled again, and then enters the external chamber, and then can return to the air inlet again from the external chamber. In this way, the temperature of the target chamber 5 can be effectively avoided to be too low. In order to facilitate the accelerated flow of the air body, a fan is generally provided at both the air inlet and the air outlet to accelerate the flow of the air body at the first heat exchanger 3 .

[0036] The inlet of the first heat exchanger 3 is connected to the access port 1, and the outlet of the first heat exchanger 3 is disconnectably connected to the access port 2 through the combination valve 7. A channel is provided in the first heat exchanger 3 for circulating the cooling fluid, which may be water, freon, alkane, ammonia, carbon dioxide, etc. The inlet of the first heat exchanger 3 is connected to the access port 1 so as to introduce the cooling fluid from the external unit 200 through the access port 1. The cooling fluid at the access port 1 may be a low-temperature cooling fluid that can meet the heat dissipation requirements; or it may be a normal temperature cooling fluid, and a throttling device is further connected to the access port 1 to form a low-temperature cooling fluid that can meet the heat dissipation requirements through the throttling of the throttling device. It should also be noted that the connection between the inlet of the first heat exchanger 3 and the access port 1 does not mean that they must be directly connected through a pipeline. Under necessary conditions, a switch valve, the above-mentioned throttling device, etc. may be provided between the two to enable the fluid in the access port 1 to flow into the first heat exchanger 3 at least under some working conditions; the connection in the context can be understood in this way.

[0037] The outlet of the first heat exchanger 3 is disconnectably connected to the outlet 2 via the combination valve 7, which means that a combination valve 7 is provided between the outlet of the first heat exchanger 3 and the outlet 2, so that when the combination valve 7 is adjusted to a connected state, the cooling fluid flowing out of the outlet of the first heat exchanger 3 can flow into the outlet 2 through the combination valve 7; on the contrary, when the combination valve 7 is adjusted to a disconnected state, the cooling fluid flowing out of the outlet of the first heat exchanger 3 cannot flow into the outlet 2 through the combination valve 7.

[0038] The second heat exchanger 4 is used to exchange heat for at least part of the heat generating equipment in the target chamber 5. The second heat exchanger 4 is mainly used to dissipate heat for high-heat generating electrical components in the target chamber 5. The heat dissipation method may also be air supply, but the heat dissipation effect is not good. Here, it is preferred that the second heat exchanger 4 is in direct thermal contact with the target part of the heat generating equipment (such as the first heat generating device 6 with higher heat generating power mentioned later) to achieve heat conduction. Of course, the thermal contact may be direct contact, in which case the second heat exchanger 4 is directly attached to the heating surface of the target part of the heat generating equipment; or it may be indirect contact, in which case a conductive structure is provided between the second heat exchanger 4 and the target part of the heat generating equipment, such as the flat plate heat pipe 20 mentioned later.

[0039] The outlet of the second heat exchanger 4 is connected to the inlet 2. As mentioned above, the connection here does not require direct connection only through a channel. Other structures such as valves can also be provided between the two according to actual needs.

[0040] The inlet 1 bypasses the first heat exchanger 3 and is connected to the inlet of the second heat exchanger 4, that is, at least part of the cooling fluid flowing into the inlet 1 may not pass through the first heat exchanger 3, and thus flow to the second heat exchanger 4. Bypassing the first heat exchanger 3 is intended to distinguish: the fluid flowing into the inlet 1 first flows into the first heat exchanger 3, and then flows from the first heat exchanger 3 to the second heat exchanger 4. The above description may also be that there is such a parallel channel, which is arranged in parallel with the above-mentioned first heat exchanger 3, and the two ends of the parallel channel are respectively connected to the inlet of the second heat exchanger 4 and the inlet 1.

[0041] The combination valve 7 can switch the connection state of multiple paths, and there are at least two working states, which are respectively the first working state and the second working state for the convenience of description. Figure 1 In the first working state, the combination valve 7 can make the outlet of the first heat exchanger 3 bypass the second heat exchanger 4 and connect to the inlet 2, so that the fluid flowing out of the outlet of the first heat exchanger 3 does not pass through the second heat exchanger 4, but directly flows to the inlet 2, thereby bypassing the second heat exchanger 4 but connecting to the inlet 2. At this time, generally, all the cooling fluid flowing out of the outlet of the first heat exchanger 3 bypasses the second heat exchanger 4 and connects to the inlet 2. As shown in the attached figure Figure 2, wherein the combined valve 7 is in the second working state, the outlet of the first heat exchanger 3 is connected to the inlet of the second heat exchanger 4, at which time part or all of the cooling fluid flowing out of the outlet of the first heat exchanger 3 flows to the second heat exchanger 4, and then flows to the inlet 2 after passing through the second heat exchanger 4. It should be noted that in the second working state, of the cooling fluid flowing out of the outlet of the first heat exchanger 3: when a part flows to the second heat exchanger 4, the other part can bypass the second heat exchanger 4 through the above-mentioned combined valve 7 to flow to the inlet 2. It should be noted that the combined valve 7 may include two valve bodies, such as two switch valves. It may also include one valve body, such as a three-way valve 72 or a reversing valve, so as to satisfy that the cooling fluid flowing out of the first heat exchanger 3 can be selected between the two states of passing through the second heat exchanger 4 and bypassing the second heat exchanger 4. At least for the proportion of the cooling fluid flowing out of the first cooler to the second heat exchanger 4, the combined valve 7 in the second working state will be greater than that in the first working state, that is, more cooling fluid will flow to the second heat exchanger 4.

[0042] In the above cooling system internal unit 100, when in use, the first heat exchanger 3 is arranged at the target chamber 5 to cool the target chamber 5, and the second heat exchanger 4 is also arranged at the target chamber 5, but it can be set corresponding to the high-heat-generating equipment in the target chamber 5 to cool the high-heat-generating equipment more directly. When the temperature of the target chamber 5 is high, the first working state is selected to work. When the temperature of the target chamber 5 is low, the second working state is selected to work so that the cooling fluid flowing out of the outlet of the first heat exchanger 3 can enter the second heat exchanger 4 to cool the high-heat-generating equipment in the second heat exchanger 4. In the above cooling system internal machine 100, it is considered that the temperature difference between the ambient temperature of the target chamber 5 and the high-heat-generating equipment is not constant, and sometimes the difference is relatively large. At this time, the temperature of the cooling fluid flowing out of the outlet of the first heat exchanger 3 will not be too high, at least equivalent to the high-heat-generating equipment, and the temperature can be reduced. Then, the cooling fluid flowing out of the outlet of the first heat exchanger 3 is supplied to the second heat exchanger 4, which can well avoid the temperature of the cooling fluid at the inlet 2 being too low, and can achieve sufficient heat absorption and improve work efficiency. In summary, the cooling system internal machine 100 can effectively solve the problem of poor working efficiency of the cooling system caused by changes in ambient temperature.

[0043] In some embodiments, the combined valve 7 may include a two-way valve 71 and a three-way valve 72 , wherein the three-way valve 72 can be fully opened, and both the two-way valve 71 and the three-way valve 72 are electric valves for easy control by a controller.

[0044] The outlet of the first heat exchanger 3 is connected to the inlet 2 through the two-way valve 71. At this time, the two-way valve 71 and the second heat exchanger 4 are connected in parallel. That is, the cooling fluid entering the two-way valve 71 at the outlet of the first heat exchanger 3 can avoid the second heat exchanger 4 and directly flow to the inlet 2.

[0045] The inlet of the second heat exchanger 4 is connected to the total outlet 723 of the three-way valve 72; the outlet of the first heat exchanger 3 is connected to the first inlet 721 of the three-way valve 72, and the access port 1 is connected to the second inlet 722 of the three-way valve 72; the three-way valve 72 has a first open state and a second open state. In the first open state of the three-way valve 72, the first inlet 721 and the total outlet 723 of the three-way valve 72 are closed, and the second inlet 722 and the total outlet 723 of the three-way valve 72 are opened, so that the cooling fluid flowing out of the outlet of the first heat exchanger 3 cannot flow to the second heat exchanger 4. When the three-way valve 72 is in the first open state, the corresponding two-way valve 71 is opened, and the combination valve 7 is in the first working state, so that the cooling fluid flowing out of the outlet of the first heat exchanger 3 can bypass the second heat exchanger 4 and flow to the access port 2. In the second open state, the first inlet 721, the second inlet 722 are both open to the total outlet 723 of the three-way valve 72, and the cooling fluid flowing out of the outlet of the first heat exchanger 3 can flow to the second heat exchanger 4, and the cooling fluid flowing into the inlet 1 can partially flow directly to the second heat exchanger 4 through the three-way valve 72. The three-way valve 72 is in the second open state, and the corresponding two-way valve 71 is closed. At this time, the combination valve 7 is in the second working state, and the cooling fluid flowing out of the outlet of the first heat exchanger 3 all passes through the first inlet 721 and enters the second heat exchanger 4.

[0046] In some embodiments, the three-way valve 72 can be made to have at least one open state: the opening of the first inlet 721 is smaller than the opening of the second inlet 722, as described in the second open state. This ensures that in the second open state, part of the cooling fluid in the inlet 1 is forced to flow to the first heat exchanger 3, rather than all of it directly to the first heat exchanger 3. At this time, the three-way valve 72 is also equivalent to a diverter. Specifically, this can be achieved by reducing the diameter of the second inlet 722. The smaller the diameter of the second inlet 722, the greater the resistance, which can force more cooling fluid to enter the first heat exchanger 3 and then flow to the second heat exchanger 4.

[0047] When the combination valve 7 is in the second working state, the two-way valve 71 is closed, and the corresponding three-way valve 72 is in the second open state, so that the opening of the first inlet 721 can be about 30%, such as between 20% and 40%, so that the cooling fluid entering the second heat exchanger 4 comes more directly from the inlet 1 and less from the first heat exchanger 3, so as to ensure the heat dissipation of high-heat-generating equipment.

[0048] In some embodiments, when the two-way valve 71 is closed and the three-way valve 72 is in the second open state, the first inlet 721 is opened at 30%; the second inlet 722 is opened at 70%, so that 30% of the cooling fluid entering the second heat exchanger 4 comes from the first heat exchanger 3, and the remaining 70% comes directly from the access port 1. In some cases, 30% of the cooling fluid flowing out of the access port 1 flows to the second heat exchanger 4 through the first heat exchanger 3, and the remaining 70% bypasses the first heat exchanger 3 to flow directly to the second heat exchanger 4.

[0049] In some embodiments, in order to facilitate the realization of the connection relationship, the flow separation or confluence is generally realized through a three-way structure. For the convenience of description, the cooling system internal unit 100 may further include a first three-way structure 8 and a second three-way structure 9. The three interfaces of the first three-way structure 8 are respectively connected to the second inlet 722, the inlet of the first heat exchanger 3 and the access port 1, so that the cooling fluid introduced into the access port 1 can be guided to the second inlet 722 of the three-way valve 72 through the first three-way structure 8, and can be guided to the first heat exchanger 3 through the first three-way structure 8. The three interfaces of the second three-way structure 9 are respectively connected to the first inlet 721, the two-way valve 71 and the outlet of the first heat exchanger 3, so that the cooling fluid flowing out of the outlet of the first heat exchanger 3 can flow to the first inlet 721 of the three-way valve 72 through the second three-way structure 9, and can flow to the two-way valve 71 through the second three-way structure 9.

[0050] In some embodiments, the channel between the first three-way structure 8 and the access port 1 may be provided with a first nozzle 11 to directly inject cooling fluid into the access port 1 to ensure the cooling fluid flow at the access port 1 .

[0051] In some embodiments, the channel between the second three-way structure 9 and the outlet of the first heat exchanger 3 can be provided with a first temperature sensor 15 and a second nozzle 12 to replenish the cooling fluid at the outlet side of the first heat exchanger 3. At the same time, the first temperature sensor 15 can monitor the temperature of the outlet of the first heat exchanger 3 in time. The opening state of the three-way valve 72 can be started according to the detection temperature of the first temperature sensor 15. For example, when the first temperature sensor 15 detects the temperature in the first temperature range, the three-way valve 72 works in the first opening state, and when the second temperature sensor 16 detects the temperature in the second temperature range, the three-way valve 72 works in the second opening state, wherein the lowest temperature in the first temperature range is higher than the highest temperature in the second temperature range. Specifically, the first temperature sensor 15 can be provided between the first heat exchanger 3 and the second nozzle 12, so as to be able to more directly monitor the heat exchange of the first heat exchanger 3.

[0052] In some embodiments, a second temperature sensor 16 may be provided between the inlet of the first heat exchanger 3 and the first three-way structure 8. In this case, the first temperature sensor 15 and the second temperature sensor 16 are used in combination to more accurately determine the heat exchange condition of the first heat exchanger 3. Generally speaking, the greater the temperature difference, the better the heat exchange effect, and the smaller the temperature difference, the lower the heat exchange efficiency.

[0053] In some embodiments, further, a third three-way structure 10 is included, wherein the three interfaces of the third three-way structure 10 are respectively connected to the two-way valve 71, the outlet of the second heat exchanger 4 and the connecting port 2, so as to merge the cooling fluid from the two-way valve 71 and the cooling fluid flowing out of the outlet of the second heat exchanger 4, so as to flow to the connecting port 2 together.

[0054] At this time, a third temperature sensor 17 and a third nozzle 14 may be provided between the outlet of the second heat exchanger 4 and the third three-way structure 10. The third nozzle 14 can better replenish the cooling fluid in the second heat exchanger 4 at a later stage to compensate for the loss of the second heat exchanger 4. The third temperature sensor 17 can monitor the heat exchange effect of the second heat exchanger 4. If the temperature exceeds the set temperature, it may indicate that the second heat exchanger 4 is not ineffective in dissipating heat from the high-heat generating device.

[0055] In some embodiments, the three-way valve 72 can be further a flow regulating valve, which can adjust the opening of the first inlet 721 and the second inlet 722 to adjust the ratio between the flow entering the first inlet 721 and the flow entering the second inlet 722. Specifically, it can be adjusted according to the detection value of the third temperature sensor 17. When the detection value of the third temperature sensor 17 exceeds the preset value, as the detection value increases, the ratio between the flow entering the first inlet 721 and the flow entering the second inlet 722 can be made smaller and smaller, that is, the latter accounts for a larger proportion.

[0056] In some embodiments, in order to make the second heat exchanger 4 work more efficiently, a flat heat pipe 20 may also be included, and the second heat exchanger 4 is a liquid-cooled cold plate, and the liquid-cooled cold plate and the flat heat pipe 20 are arranged one by one and transfer heat. The liquid-cooled cold plate includes a plate body and a cooling fluid channel opened in the plate body to access the three-way valve 72 and the third three-way structure 10. The flat heat pipe 20 exchanges heat between the plate body and the cooling fluid channel. The flat heat pipe 20 may be a micro-nano heat pipe, and its specific structure may refer to the prior art. When in use, the flat heat pipe 20 and the corresponding heating device (electronic chip, etc.) are in thermal contact to absorb heat, and then at the second heat exchanger 4, the flat heat pipe 20 and the liquid-cooled cold plate are directly in thermal contact, so that the heat absorbed by the flat heat pipe 20 from the heating device is transferred to the liquid-cooled cold plate, and then transferred out by the liquid-cooled cold plate. The flat heat pipe 20 is generally a phase change heat exchanger.

[0057] In some embodiments, multiple liquid-cooled cold plates can be connected in parallel, and a switch valve is provided on the channel of each of the liquid-cooled cold plates. When in use, each liquid-cooled cold plate corresponds to a different heating device. Since different heating devices have different temperatures and do not work synchronously, the opening and closing of each switch valve can be adjusted at this time. The specific switch valves can all be electronic switch valves: the opening and closing of each switch valve can be controlled according to the temperature of each liquid-cooled cold plate. For example, if the temperature of the liquid-cooled cold plate corresponding to a certain switch valve is too low, indicating that no heat exchange is performed, then the switch valve corresponding to the liquid-cooled cold plate is closed; or the opening and closing of each switch valve can be controlled according to the opening information of each corresponding heating device obtained by the system controller. For example, when the system controller controls a certain heating device to be turned on, it controls the switch valve connected to the corresponding liquid-cooled cold plate to be opened, so that the liquid-cooled cold plate can dissipate heat for the heating device.

[0058] In some embodiments, in order to facilitate the connection, a switch valve is generally provided at both the inlet 2 and the inlet 1, so that the switch valve can be closed when the connection is disconnected.

[0059] In some embodiments, the cooling equipment 21, such as a cooling water tower, can be a dry cooling water tower or a dry-wet mixed cooling water tower.

[0060] Based on the cooling system internal machine 100 provided in the above embodiment, the present invention further provides an electronic device, which includes any one of the cooling system internal machines 100 in the above embodiment, and also includes an equipment cabinet 300, a first heating device 6 and a second heating device, wherein the first heating device 6 and the second heating device (not shown in the figure, such as a circuit board, etc.) are both arranged in the equipment cabinet 300; and in the working state, the heating power of the first heating device 6 is higher than the heating power of the second heating device; the first heat exchanger 3 of the internal machine 100 is arranged at the equipment cabinet 300 to cool the cabinet cavity of the equipment cabinet 300, and the second heat exchanger 4 of the internal machine 100 is arranged at the first heating device 6 to cool the first heating device 6, which can be directly in thermal contact or indirectly in thermal contact through the above flat heat pipe 20. Since the electronic device adopts the cooling system internal machine 100 in the above embodiment, please refer to the above embodiment for the beneficial effects of the electronic device. Specifically, the first heat exchanger 3 can be arranged at the air inlet or outlet of the equipment cabinet 300, and the second heat exchanger 4 is arranged in the equipment cabinet 300 and is arranged corresponding to the first heating device 6. When there are multiple second heat exchangers 4, they can be arranged one-to-one or one-to-many to correspond to the multiple first heating devices 6. For example, multiple second heat exchangers 4 are arranged in parallel in sequence from top to bottom.

[0061] In some embodiments, the first heat generating device 6 is one or more of a hard disk, a memory, a power supply, a CPU, a GPU or other components.

[0062] Based on the cooling system indoor unit 100 provided in the above embodiment, the present invention further provides a cooling system, which includes any one of the cooling system indoor units 100 in the above embodiment, including an external unit 200, wherein the external unit 200 is provided with a cooling device 21, wherein the inlet of the cooling device 21 is connected to the inlet 2 of the cooling system indoor unit 100, and the outlet of the cooling device 21 is connected to the inlet 1 of the cooling system indoor unit 100. Since the cooling system adopts the cooling system indoor unit 100 in the above embodiment, please refer to the above embodiment for the beneficial effects of the cooling system.

[0063] In some embodiments, a driving pump 22 may be further provided in the internal unit 100 or the external unit 200 of the cooling system to drive the cooling fluid to flow. Specifically, the driving pump 22 is preferably provided in the external unit 200, and preferably the driving pump 22 is provided between the inlet 2 and the inlet of the cooling device 21. Furthermore, a drain outlet may be provided between the driving pump 22 and the inlet of the cooling device 21, and a drain valve 29 may be provided at the drain outlet.

[0064] In some embodiments, a parallel channel 23 may also be provided, and the parallel channel 23 and the above-mentioned cooling device 21 are arranged in parallel. Specifically, an electric three-way valve 24 may also be provided, and the inlet of the electric three-way valve 24 is connected to the inlet 2, and the two outlets are respectively connected to the first end of the above-mentioned parallel channel 23 and the inlet of the cooling device 21, and the second end of the parallel channel 23 is connected between the outlet of the cooling device 21 and the inlet 1.

[0065] In some embodiments, the external unit 200 may include a liquid outlet 27 and a liquid inlet 26, both of which are provided with a switch valve, and the liquid outlet 27 is correspondingly connected to the access port 1, and the liquid inlet 26 is correspondingly connected to the access port 2. The second end of the parallel channel 23, the liquid outlet 27 and the outlet of the cooling device 21 are connected through a fourth three-way structure 28, and correspondingly, a fourth temperature sensor 18 may be provided between the outlet of the cooling device 21 and the fourth three-way structure 28, and a fifth temperature sensor 19 may be provided at the inlet of the cooling device 21 to monitor the cooling effect of the cooling device 21 in real time.

[0066] The three interfaces of the electric three-way valve 24 are respectively connected to the liquid inlet 26 , the first end of the parallel channel 23 and the inlet of the cooling device 21 .

[0067] In some embodiments, an exhaust valve 25 is further disposed between the fifth temperature sensor 19 and the outlet of the cooling device 21 .

[0068] In some embodiments, based on the cooling system internal unit 100 provided in the above embodiments, the present invention further provides a cooling method for a cooling system, and the cooling method for a cooling system comprises the following steps:

[0069] Step 100 , obtaining the outlet temperature of the first heat exchanger 3 . The outlet temperature of the first heat exchanger 3 may be obtained directly through the first temperature sensor 15 , or may be obtained indirectly through the air temperature at the first heat exchanger 3 .

[0070] Step 200, when the outlet temperature of the first heat exchanger 3 is higher than the first preset temperature, the cooling fluid flowing out of the first heat exchanger 3 bypasses the second heat exchanger 4 to flow to the cooling device 21, and a part of the cooling fluid flowing out of the cooling device 21 enters the first heat exchanger 3, and the other part bypasses the first heat exchanger 3 to enter the second heat exchanger 4, wherein the first heat exchanger 3 is used to cool down the entire cabinet cavity of the equipment cabinet 300, and the second heat exchanger 4 is used to cool down some of the heating equipment in the cabinet cavity of the equipment cabinet 300. As mentioned above, the combination valve 7 is in the first working state. At this time, the cooling fluid flowing out of the first heat exchanger 3 does not enter the second heat exchanger 4. The arrangement of the first heat exchanger 3 and the second heat exchanger 4 in the equipment cabinet 300 can also refer to the above embodiment.

[0071] Step 300, when the outlet temperature of the first heat exchanger 3 is lower than the second preset temperature, the cooling fluid flowing out of the first heat exchanger 3 passes through the second heat exchanger 4 to flow to the cooling device 21, and part of the cooling fluid flowing out of the cooling device 21 enters the first heat exchanger 3, and the other part bypasses the first heat exchanger 3 to enter the second heat exchanger 4, wherein the first preset temperature is not lower than the second preset temperature. At this time, it is as if the above-mentioned combination valve 7 works in the second working state. At this time, the cooling fluid flowing out of the first heat exchanger 3 enters the second heat exchanger 4 and continues to absorb heat to improve the working efficiency of the cooling fluid. Of course, part of the cooling fluid cooled by the cooling device 21 is directly supplied to the second heat exchanger 4 without passing through the first heat exchanger 3 to ensure that the heat exchange efficiency of the second heat exchanger 4 meets the requirements. The cooling device 21 is as described above.

[0072] Since the cooling method of the cooling system is consistent with the method of using the cooling system internal unit 100 in the above embodiment, please refer to the above embodiment for the beneficial effects of the cooling method of the cooling system.

[0073] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0074] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cooling system internal unit, characterized in that: include: Access inlet, access outlet; a first heat exchanger, for cooling the target chamber, wherein an inlet of the first heat exchanger is in communication with the access port; A second heat exchanger, used for exchanging heat with at least part of the heat generating equipment in the target chamber, wherein the inlet is connected to the inlet of the second heat exchanger bypassing the first heat exchanger, and the outlet of the second heat exchanger is connected to the inlet; A combination valve, in a first working state, the combination valve can connect the outlet of the first heat exchanger to the inlet bypassing the second heat exchanger; in a second working state, the combination valve can connect the outlet of the first heat exchanger to the inlet of the second heat exchanger.

2. The cooling system internal unit according to claim 1, characterized in that: The combined valve includes a two-way valve and a three-way valve; the outlet of the first heat exchanger is connected to the access port through the two-way valve; the inlet of the second heat exchanger is connected to the total outlet of the three-way valve; the outlet of the first heat exchanger is connected to the first inlet of the three-way valve, and the access port is connected to the second inlet of the three-way valve; the three-way valve has a first open state and a second open state; In the first open state, the first inlet and the total outlet of the three-way valve are closed, and the second inlet and the total outlet of the three-way valve are opened; In the second open state, the first inlet and the second inlet are both open to the main outlet of the three-way valve.

3. The cooling system internal unit according to claim 2, characterized in that: The three-way valve is in the second open state: the opening degree of the first inlet is smaller than the opening degree of the second inlet.

4. The cooling system internal unit according to claim 3, characterized in that: When the two-way valve is closed and the three-way valve is in the second open state: the opening degree of the first inlet is 30%; and the opening degree of the second inlet is 70%.

5. The cooling system internal unit according to claim 2, characterized in that: It includes a first three-way structure and a second three-way structure; the three interfaces of the first three-way structure are respectively connected to the second inlet, the inlet of the first heat exchanger and the access port; the three interfaces of the second three-way structure are respectively connected to the first inlet, the two-way valve and the outlet of the first heat exchanger; the channel between the first three-way structure and the access port is provided with a first nozzle; the channel between the second three-way structure and the outlet of the first heat exchanger is provided with a first temperature sensor and a second nozzle; and a second temperature sensor is provided between the inlet of the first heat exchanger and the first three-way structure.

6. The cooling system internal unit according to claim 5, characterized in that: It also includes a third three-way structure, the three interfaces of which are respectively connected to the two-way valve, the outlet of the second heat exchanger and the connecting port; a third temperature sensor and a third nozzle are arranged between the outlet of the second heat exchanger and the third three-way structure.

7. The cooling system internal unit according to any one of claims 1 to 6, characterized in that: It also includes a flat heat pipe, and the second heat exchanger is a liquid-cooled cold plate. The liquid-cooled cold plate and the flat heat pipe are arranged in a one-to-one correspondence and transfer heat.

8. The cooling system internal unit according to claim 7, characterized in that: The plurality of liquid-cooled cold plates are connected in parallel, and a switch valve is provided on the channel of each liquid-cooled cold plate; the flat plate heat pipe is a micro-nano heat pipe.

9. An electronic device, comprising an equipment cabinet, a first heating device and a second heating device, wherein the first heating device and the second heating device are both arranged in the equipment cabinet; and in a working state, the heating power of the first heating device is higher than the heating power of the second heating device; characterized in that: It comprises an indoor unit of the cooling system as described in any one of claims 1 to 8, wherein the first heat exchanger of the indoor unit is arranged at the equipment cabinet to cool the cabinet cavity of the equipment cabinet, and the second heat exchanger of the indoor unit is arranged at the first heating device to cool the first heating device.

10. A cooling system, comprising an external machine, wherein the external machine is provided with a cooling device, characterized in that: It also includes a cooling system internal unit as described in any one of claims 1 to 8, wherein the inlet of the cooling device is connected to the outlet of the cooling system internal unit, and the outlet of the cooling device is connected to the inlet of the cooling system internal unit.

11. A cooling method for a cooling system, characterized in that: The steps include: Obtaining the outlet temperature of the first heat exchanger; When the outlet temperature of the first heat exchanger is higher than the first preset temperature, the cooling fluid flowing out of the first heat exchanger bypasses the second heat exchanger to flow to the cooling device, and a part of the cooling fluid flowing out of the cooling device enters the first heat exchanger, and the other part bypasses the first heat exchanger to enter the second heat exchanger, wherein the first heat exchanger is used to cool down the entire cabinet cavity of the equipment, and the second heat exchanger is used to cool down part of the heat-generating equipment in the cabinet cavity of the equipment; When the outlet temperature of the first heat exchanger is lower than the second preset temperature, the cooling fluid flowing out of the first heat exchanger passes through the second heat exchanger to flow to the cooling device, and part of the cooling fluid flowing out of the cooling device enters the first heat exchanger, and the other part bypasses the first heat exchanger to enter the second heat exchanger, wherein the first preset temperature is not lower than the second preset temperature.

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