Integrated preheating type pump-driven two-phase flow system

Abstract

The utility model relates to the technical field of heat dissipation systems, and particularly discloses an integrated preheating type pump-driven two-phase flow system which comprises a condenser, a liquid storage tank, a circulating preheating bin and an evaporation cold plate which are sequentially connected in a closed loop mode. The condenser, the liquid storage tank and the circulating preheating bin are integrally formed, the circulating preheating bin comprises a preheating bin and a circulating pump, the preheating bin is provided with a liquid inlet chamber and a preheating chamber which are isolated from each other, the circulating pump is provided with a pump inlet, a pump body and a pump outlet, the pump inlet is located in the liquid inlet chamber and connected with the liquid storage tank, and the pump body and the pump outlet are arranged in the preheating chamber. The evaporation cold plate is communicated with the preheating chamber; and a liquid refrigerant flows into the preheating chamber through a pump outlet and is in contact with the pump body for heat exchange. The system size is reduced, the use requirement of a narrow space is met, the refrigerant is heated through the circulating pump, the temperature of the refrigerant is prevented from being too low when the refrigerant enters the evaporation cold plate, it is guaranteed that the refrigerant is completely evaporated in the evaporation cold plate, and the cooling capacity of the integrated preheating type pump-driven two-phase flow system is improved.

Description

Technical Field

[0001] The present application relates to the technical field of heat dissipation systems, and in particular to an integrated preheating pump-driven two-phase flow system. Background Art

[0002] With the iteration and update of electronic technology and packaging process technology, the functions of electronic device chips are becoming more and more perfect, and chips and electronic devices are gradually developing in the direction of integration and miniaturization. The performance and integration of various electronic devices are constantly improving, and hundreds of millions of electronic components are packaged on a very small substrate, which makes it increasingly difficult to dissipate heat and control temperature of the equipment in a limited space.

[0003] In order to meet the heat dissipation needs of these places, the existing research direction has been promoted from traditional air cooling and single-phase liquid convection cooling to two-phase boiling heat exchange with higher heat dissipation potential. Flow boiling heat exchange (microchannel) based on phase change, two-phase spray cooling, and two-phase jet cooling are several commonly used heat dissipation methods, but spray cooling and jet cooling systems are relatively complex and occupy a large space, and are not suitable for use in places with small spaces. With the development of micro-machining technology, micro-channel heat dissipation methods with compact structure, light weight, and good temperature uniformity have broad application prospects in the field of high heat flux density heat dissipation in the future; however, the existing pump-driven two-phase flow system often sets a regenerator in front of the evaporator to heat the refrigerant entering the evaporator, and the regenerator will occupy a certain volume of the entire pump-driven two-phase flow.

[0004] Therefore, how to omit the regenerator upstream of the evaporator in a pump-driven two-phase flow system and ensure effective evaporation of the refrigerant has become a technical problem that needs to be solved urgently. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide an integrated preheating pump-driven two-phase flow system, aiming to solve the problem that the pump-driven two-phase flow system in the prior art requires a regenerator upstream of the evaporator to ensure effective evaporation of the refrigerant.

[0006] The technical solutions adopted by this application to solve the technical problems are as follows:

[0007] An integrated preheating pump-driven two-phase flow system comprises a condenser, a liquid storage tank, a circulating preheating bin and an evaporative cold plate which are sequentially connected in a closed loop; the condenser, the liquid storage tank and the circulating preheating bin are integrally formed, the circulating preheating bin comprises a preheating bin and a circulating pump, the preheating bin has a liquid inlet chamber and a preheating chamber which are isolated from each other, the circulating pump has a pump inlet, a pump body and a pump outlet, the pump inlet is located in the liquid inlet chamber and is connected to the liquid storage tank, the pump body and the pump outlet are arranged in the preheating chamber, and the evaporative cold plate is connected to the preheating chamber; liquid refrigerant flows into the preheating chamber through the pump outlet and contacts with the pump body for heat exchange.

[0008] Furthermore, the preheating chamber comprises:

[0009] Warehouse body;

[0010] A partition is arranged in the warehouse body and is used to separate the inner cavity of the warehouse body into a liquid inlet chamber and a preheating chamber.

[0011] Furthermore, the preheating chamber is also provided with a heating element, and the heating element is used to heat the liquid refrigerant.

[0012] Furthermore, the heating element is embedded in the wall of the preheating chamber.

[0013] Furthermore, the pump body comprises:

[0014] Pump body;

[0015] A pump casing, the pump casing is sleeved on the pump body and seals the pump body;

[0016] A plurality of heat dissipation fins are uniformly formed on the outer peripheral surface of the pump shell.

[0017] Furthermore, a plurality of the heat dissipation fins separate the preheating chamber into a bottom flow channel, a plurality of middle flow channels and a top flow channel along the height direction, the pump outlet is connected to the bottom flow channel, and the top flow channel is connected to the evaporative cold plate.

[0018] Further, the bin body includes a bottom plate and a top plate arranged opposite to each other, and a first side plate, a second side plate and a third side plate connected between the bottom plate and the top plate in a U-shaped manner; the pump body is arranged on the bottom plate, and the partition plate and the second side plate are respectively connected to the first side plate, the bottom plate, the third side plate and the two ends of the top plate;

[0019] The heat dissipation fins include a bottom fin, a plurality of first middle fins, a plurality of second middle fins and a top fin;

[0020] Among them, the bottom fins are respectively connected to the first side plate, the partition plate and the third side plate to cooperate with the bottom plate and the second side plate to form the bottom flow channel; a number of the first intermediate fins and a number of the second intermediate fins are alternately arranged from bottom to top, a number of the first intermediate fins are respectively connected to the first side plate, the second side plate and the third side plate to cooperate with the bottom plate and the partition plate to form a number of the intermediate flow channels, and a number of the second intermediate fins are respectively connected to the first side plate, the partition plate and the third side plate to cooperate with the bottom plate and the second side plate to form a number of the intermediate flow channels.

[0021] Furthermore, the plurality of heat dissipation fins also include a plurality of auxiliary fins arranged on the bottom flow channel and the top flow channel.

[0022] Furthermore, the tank body of the liquid storage tank is configured as an insulated tank body;

[0023] The condenser comprises a condenser body and a plurality of heat dissipation fans, and the condenser body is connected between the evaporative cold plate and the liquid storage tank.

[0024] Furthermore, the integrated preheating pump-driven two-phase flow system also includes:

[0025] A temperature sensor is arranged at the entrance of the evaporative cold plate.

[0026] Beneficial effects:

[0027] The present application provides an integrated preheating pump-driven two-phase flow system, which effectively reduces the volume by arranging the condenser, liquid storage tank and circulating preheating chamber into an integral molding to meet the use requirements of a small space; through the circulating preheating chamber, and setting the circulating preheating chamber as a preheating chamber and a circulating pump, and setting the preheating chamber as a liquid inlet chamber and a preheating chamber, the refrigerant can be transported to the preheating chamber through the circulating pump, and then absorb the heat of the pump body in the preheating chamber, thereby increasing the temperature of the refrigerant to prevent the refrigerant from being too low in temperature when entering the evaporative cold plate, ensuring that the refrigerant is completely evaporated in the evaporative cold plate, and improving the cooling capacity of the integrated preheating pump-driven two-phase flow system. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a functional principle schematic block diagram of the integrated preheating pump-driven two-phase flow system provided in this application;

[0029] Figure 2 It is a cross-sectional schematic diagram of a circulating preheating chamber of an integrated preheating pump-driven two-phase flow system provided in the present application;

[0030] Figure 3 is another cross-sectional schematic diagram of a circulating preheating chamber of the integrated preheating pump-driven two-phase flow system provided in the present application;

[0031] Description of reference numerals:

[0032] 10. Integrated preheating pump-driven two-phase flow system; 11. Condenser; 12. Liquid storage tank; 13. Circulating preheating bin; 14. Evaporative cold plate; 15. Temperature sensor; 16. Preheating bin; 17. Circulating pump; 111. Condenser body; 112. Cooling fan; 161. Liquid inlet chamber; 162. Preheating chamber; 163. Bin body; 164. Partition; 165. Heating element; 1621. Bottom flow channel; 1622. Middle flow channel; 1623. Top flow channel; 1631, bottom plate; 1632, top plate; 1633, first side plate; 1634, second side plate; 1635, third side plate; 171, pump inlet; 172, pump body; 173, pump outlet; 174, pump body; 175, pump casing; 176, cooling fins; 1761, bottom fins; 1762, first middle fins; 1763, second middle fins; 1764, top fins; 1765, auxiliary fins. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present application clearer and more specific, the present application is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific examples described here are only used to explain the present application and are not used to limit the present application.

[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0035] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] This application is based on the existing technology. Phase change flow boiling heat exchange (microchannel), two-phase spray cooling, and two-phase jet cooling are several commonly used heat dissipation methods, but the spray cooling and jet cooling systems are relatively complex and occupy a large space, and are not suitable for use in places with small spaces. In addition, the development direction of the heat dissipation structure of the existing micro-machining technology is the micro-channel heat dissipation method with a more compact structure, light weight, and good temperature uniformity; however, the existing pump-driven two-phase flow system often has a regenerator in front of the evaporator to heat the refrigerant entering the evaporator, and the regenerator will occupy a certain volume of the entire pump-driven two-phase flow.

[0037] Please refer to Figures 1 to 3In the first embodiment of the present application, an integrated preheating pump-driven two-phase flow system 10 is provided, comprising a condenser 11, a liquid storage tank 12, a circulating preheating bin 13 and an evaporative cold plate 14 which are sequentially connected in a closed loop, that is, the condenser 11, the liquid storage tank 12, the circulating preheating bin 13 and the evaporative cold plate 14 constitute a closed refrigerant circulation loop. Driven by the circulating preheating bin 13, the refrigerant enters the evaporative cold plate 14, evaporates and absorbs the heat of the heat source on the evaporative cold plate 14, and then enters the condenser 11 for condensation and liquefaction. The liquefied liquid refrigerant enters the liquid storage tank 12, and then circulates back to the circulating preheating bin 13. It can be seen that in the integrated preheating When the integrated preheating pump-driven two-phase flow system 10 cools the target device, it is only necessary to set the evaporative cold plate 14 on the heat source, while the condenser 11, the liquid storage tank 12 and the circulating preheating bin 13 can be set away from the heat source, and then the condenser 11, the liquid storage tank 12 and the circulating preheating bin 13 are integrally formed, and the evaporative cold plate 14 is set on the heat source, thereby effectively reducing the volume of the integrated preheating pump-driven two-phase flow system 10, so that the integrated preheating pump-driven two-phase flow system 10 meets the use requirements of a small space; the circulating preheating bin 13 includes a preheating bin 16 and a circulating pump 17, and the circulating pump 17 is located in the In the preheating chamber 16, the preheating chamber 16 has a liquid inlet chamber 161 and a preheating chamber 162 isolated from each other, the circulating pump 17 has a pump inlet 171, a pump body 172 and a pump outlet 173, the pump inlet 171 is located in the liquid inlet chamber 161, the pump inlet 171 is connected to the liquid storage tank 12, the pump body 172 and the pump outlet 173 are arranged in the preheating chamber 162, the evaporative cold plate 14 is connected to the preheating chamber 162, and the pump outlet 173 is connected to the preheating chamber 162. It can be seen that under the action of the pump body 172, the liquid refrigerant is discharged from the outlet of the liquid storage tank 12 through the pump inlet 171 and the pump outlet 173. , enters the preheating chamber 162, and exchanges heat with the pump body 172 in the preheating chamber 162, that is, absorbs the heat generated by the pump body 172 when it is running. After absorbing the heat, the liquid refrigerant flows into the evaporative cold plate 14 and evaporates immediately, ensuring the rapid and complete evaporation of the refrigerant, ensuring the immediate omission of the heat exchanger, and also ensuring the heat dissipation effect of the integrated preheating pump-driven two-phase flow system 10; at the same time, it should be emphasized that the refrigerant absorbs the heat of the pump body 172, and then the heat dissipation components of the pump body 172 can be omitted, which can reduce energy consumption, further reduce the volume of the circulating pump 17, and effectively reduce operating noise and vibration, thereby improving comfort.

[0038] In some embodiments, the preheating chamber 16 further includes a chamber body 163 and a partition 164, wherein the chamber body 163 has an inner cavity, namely, a liquid inlet chamber 161 and a preheating chamber 162; the partition 164 is disposed in the chamber body 163, and is used to separate the inner cavity of the chamber body 163 into the liquid inlet chamber 161 and the preheating chamber 162, and the circulating pump 17 is disposed in the chamber body 163, and a part of the circulating pump 17 passes through the partition 164, that is, the pump inlet 171 is located on the partition. The pump outlet 173 of the liquid inlet chamber 161 on one side of 164 passes through the partition 164 and is connected to the preheating chamber 162, that is, the pump body 172 and the pump inlet 171 are located in the preheating chamber 162, thereby absorbing the heat of the pump body 172 to prevent the liquid refrigerant from being too low in temperature when entering the evaporative cold plate 14, and the heat dissipation components of the pump body 172 can be omitted, which can reduce energy consumption, further reduce the volume of the circulating pump 17, and effectively reduce operating noise and vibration, thereby improving comfort.

[0039] In some embodiments, the preheating chamber 162 is also provided with a heating element 165, and the heating element 165 is used to heat the liquid refrigerant; it should be noted that, for the integrated preheating pump-driven two-phase flow system 10 provided in the embodiment, the optimal temperature of the refrigerant entering the evaporative cold plate 14 is the near evaporation temperature of the refrigerant. Therefore, when high-power cooling is required, relying solely on the circulating pump 17 to preheat the refrigerant may result in insufficient refrigerant temperature when entering the evaporative cold plate 14. By arranging the heating element 165 in the preheating chamber 162, it can be ensured that the circulating preheating chamber 13 can fully preheat the refrigerant, so that the refrigerant enters the evaporative cold plate 14 and immediately evaporates and absorbs heat, thereby improving the cooling effect of the integrated preheating pump-driven two-phase flow system 10. Furthermore, the heating element 165 is embedded in the wall of the preheating chamber 162, thereby improving the safety of the circulating preheating chamber 13, avoiding a short circuit between the heating element 165 and the circulating pump 17, and avoiding direct contact between the heating element 165 and the circulating pump 17, thereby damaging the circulating pump 17 by heating.

[0040] In some embodiments, the pump body 172 includes a pump body 174, a pump shell 175 and a plurality of heat dissipation fins 176. The pump shell 175 is sleeved on the pump body 172, and the pump shell 175 seals the pump body 174. The pump body 174 performs work after being energized, converting electrical energy into power to drive the flow of refrigerant. When the pump body 174 performs work, heat is generated. By sleeved the pump shell 175 outside the pump body 174, the pump body 174 can be effectively protected to avoid liquid cooling. The medium can corrode the pump body 174, and can quickly conduct the pump body 174 to the liquid refrigerant; a number of the heat dissipation fins 176 are evenly formed on the outer peripheral surface of the pump shell 175. It can be seen that by arranging a number of heat dissipation fins 176 on the pump shell 175, the heat exchange area between the circulating pump 17 and the refrigerant can be effectively increased. At the same time, the preheating chamber 162 can be isolated into multiple sections of interconnected flow channels, which further increases the heat absorption time of the refrigerant and ensures the preheating effect of the circulating preheating chamber 13 on the refrigerant.

[0041] In some embodiments, the heat dissipation fins 176 separate the preheating chamber 162 into a bottom flow channel 1621, a plurality of intermediate flow channels 1622 and a top flow channel 1623 along the height direction, the pump outlet 173 is connected to the bottom flow channel 1621, and the top flow channel 1623 is connected to the evaporative cold plate 14, so that the refrigerant first enters the bottom flow channel 1621 of the preheating chamber 162, then passes through the plurality of intermediate flow channels 1622, and finally reaches the top flow channel 1623 and flows out, and then enters the evaporative cold plate 14 under the guidance of the pipeline, thereby effectively increasing the residence time of the refrigerant in the preheating chamber 162, thereby ensuring the preheating effect of the refrigerant.

[0042] In some embodiments, the bin body 163 includes a bottom plate 1631, a top plate 1632, a first side plate 1633, a second side plate 1634, and a third side plate 1635; the bottom plate 1631 and the top plate 1632 are oppositely arranged, and the first side plate 1633, the second side plate 1634, and the third side plate 1635 are sequentially connected in a U shape, and the first side plate 1633, the second side plate 1634, and the third side plate 1635 are also connected between the bottom plate 1631 and the top plate 1632; the pump body 172 is arranged on the bottom plate 1631, and the partition plate 164 and the second side plate 1634 are respectively connected to both ends of the first side plate 1633, the bottom plate 1631, the third side plate 1635, and the top plate 1632; the plurality of heat dissipation fins 176 include bottom fins 1761, top fins 1764, a plurality of first intermediate fins 1762, and a plurality of second intermediate fins 1763; wherein, the bottom fins 1761 are respectively connected to the first side plate 1633, the partition plate 164, and the third side plate 1635 to cooperate with the bottom plate 1631 and the second side plate 1634 to form the bottom flow channel 1621; the plurality of first intermediate fins 1762 and the plurality of second intermediate fins 1763 are alternately arranged at intervals from bottom to top, and the plurality of first intermediate fins 1762 are respectively connected to the first side plate 1633, the second side plate 1634, and the third side plate 1635 to cooperate with the bottom plate 1631 and the partition plate 164 to form a plurality of the intermediate flow channels 1622, and the plurality of second intermediate fins 1763 are respectively connected to the first side plate 1633, the partition plate 164, and the third side plate 1635 to cooperate with the bottom plate 1631 and the second side plate 1634 to form a plurality of the intermediate flow channels 1622, thereby effectively increasing the heat exchange area between the circulation pump 17 and the refrigerant entering the preheating chamber 162, and effectively guiding the flow direction of the refrigerant, and increasing the residence heat exchange time of the refrigerant in the preheating chamber 162.

[0043] In some embodiments, the plurality of heat dissipation fins 176 further include a plurality of auxiliary fins 1765, and the plurality of auxiliary fins 1765 are arranged in the bottom flow channel 1621 and the top flow channel 1623, thereby further increasing the heat exchange area between the refrigerant and the circulation pump 17, further improving the preheating effect of the preheating chamber 162 on the refrigerant, ensuring that the refrigerant evaporates immediately when entering the evaporation cold plate 14, ensuring that the refrigerant is completely evaporated in the evaporation cold plate 14, and improving the heat absorption and cooling effect of the integrated preheating type pump-driven two-phase flow system 10.

[0044] In some embodiments, the tank body of the liquid storage tank 12 is configured as an insulated tank body; it can be seen that the liquid storage tank 12 is located between the condenser 11 and the circulating preheating chamber 13. By configuring the tank body of the liquid storage tank 12 as an insulated tank body, it is possible to avoid invalid heat exchange between the condenser 11, the liquid storage tank 12 and the circulating preheating chamber 13 after they are integrally formed. This can reduce the volume of the integrated preheating pump-driven two-phase flow system 10 as soon as possible, while ensuring the heat absorption and cooling capacity of the integrated preheating pump-driven two-phase flow system 10.

[0045] In some embodiments, the condenser 11 includes a condenser body 111 and a plurality of cooling fans 112. After the refrigerant evaporates in the evaporative cold plate 14, it is blown by the cooling fans 112 in the condenser body 111 to dissipate heat and cool down, and the heat is condensed into liquid refrigerant. That is, the condenser body 111 is connected between the evaporative cold plate 14 and the liquid storage tank 12. Under the action of the circulating pump 17, the refrigerant passes through the condenser body 111, the liquid storage tank 12, the circulating pump 17, the preheating chamber 162 and the evaporative cold plate 14 in sequence, and then circulates to the condenser body 111 to start the next cycle. A plurality of cooling fans 112 can be provided, and different numbers of cooling fans 112 are turned on according to different heat dissipation requirements.

[0046] In some embodiments, the integrated preheating pump-driven two-phase flow system 10 also includes: a temperature sensor 15, which is arranged at the entrance of the evaporative cold plate 14, so as to monitor the real-time temperature of the refrigerant entering the evaporative cold plate 14, and control the operating power of the heating element 165 according to the comparison result between the real-time temperature of the refrigerant and the preset refrigerant evaporation near temperature data, so as to ensure that the refrigerant evaporates immediately after entering the evaporative cold plate 14, thereby ensuring the cooling effect of the integrated preheating pump-driven two-phase flow system 10.

[0047] In some specific embodiments, an integrated preheating pump-driven two-phase flow system 10 is provided, and the integrated preheating pump-driven two-phase flow system 10 is applied to the heat dissipation use scenario in a narrow space; the integrated preheating pump-driven two-phase flow system 10 includes: a condenser 11, a liquid storage tank 12, a circulating preheating bin 13, an evaporative cold plate 14 and a temperature sensor 15, the condenser 11, the liquid storage tank 12, the circulating preheating bin 13, and the evaporative cold plate 14 constitute a closed-loop refrigerant circulation circuit, the temperature sensor 15 is located at the entrance of the evaporative cold plate 14, and is used to detect the temperature of the refrigerant entering the evaporative cold plate 14 from the circulating preheating bin 13; the circulating preheating bin 13 includes a preheating bin 16 and a circulating pump 17; the preheating bin 1 6 includes a liquid inlet chamber 161, a preheating chamber 162, a chamber body 163, a partition 164 and a heating element 165, wherein the chamber body 163 includes a bottom plate 1631, a top plate 1632, a first side plate 1633, a second side plate 1634 and a third side plate 1635; the circulating pump 17 has a pump inlet 171, a pump body 172 and a pump outlet 173, wherein the pump body 172 includes a pump body 174, a pump shell 175 and a plurality of heat dissipation fins 176, wherein the pump shell 175 is sleeved on the pump body 172, and the pump shell 175 seals the pump body 174, and the plurality of heat dissipation fins 176 are uniformly formed on the outer peripheral surface of the pump shell 175; the plurality of heat dissipation fins 176 include a bottom fin 17 61, a top fin 1764, a plurality of first middle fins 1762, a plurality of second middle fins 1763 and a plurality of auxiliary fins 1765; wherein the bottom fin 1761 is respectively connected to the first side plate 1633, the partition plate 164 and the third side plate 1635 to cooperate with the bottom plate 1631 and the second side plate 1634 to form the bottom flow channel 1621; a plurality of the first middle fins 1762 and a plurality of the second middle fins 1763 are alternately arranged from bottom to top, and a plurality of the first middle fins 1762 are respectively connected to the first side plate 1633, the second side plate 1634 and the third side plate 1635 to cooperate with the bottom plate 1631 and the partition plate 16 4 constitutes a plurality of the intermediate flow channels 1622, a plurality of the second intermediate fins 1763 are respectively connected to the first side plate 1633, the partition plate 164 and the third side plate 1635 to cooperate with the bottom plate 1631 and the second side plate 1634 to constitute a plurality of the intermediate flow channels 1622, and a plurality of auxiliary fins 1765 are arranged in the bottom flow channel 1621 and the top flow channel 1623; the tank body of the liquid storage tank 12 is arranged as an insulated tank body, the condenser 11 comprises a condenser body 111 and a plurality of heat dissipation fans 112, the condenser body 111 is connected between the evaporative cold plate 14 and the liquid storage tank 12, and the plurality of heat dissipation fans 112 are used to cool the condenser body 111;During assembly, the evaporative cooling plate 14 is installed at the heat source, while the integrally formed condenser 11, liquid storage tank 12 and circulating preheating chamber 13 can be installed away from the heat source. At the same time, the refrigerant is preheated by using the circulating pump 17 and the heating element, which not only ensures that the refrigerant enters the evaporative cooling plate 14 and evaporates immediately, but also cools the circulating pump 17, omits the heat dissipation structure of the circulating pump 17, reduces system energy consumption and noise, and also reduces the volume of the integrated preheating pump-driven two-phase flow system 10. ;

[0048] In summary, the present application provides an integrated preheating pump-driven two-phase flow system, which includes a condenser, a liquid storage tank, a circulating preheating chamber and an evaporative cold plate which are connected in a closed loop in sequence; the condenser, the liquid storage tank and the circulating preheating chamber are integrally formed, the circulating preheating chamber includes a preheating chamber and a circulating pump, the preheating chamber has a liquid inlet chamber and a preheating chamber isolated from each other, the circulating pump has a pump inlet, a pump body and a pump outlet, the pump inlet is located in the liquid inlet chamber and is connected to the liquid storage tank, the pump body and the pump outlet are arranged in the preheating chamber, and the evaporative cold plate is connected to the preheating chamber; the liquid refrigerant flows into the preheating chamber through the pump outlet, and contacts with the pump body for heat exchange. By forming the condenser, liquid storage tank and circulating preheating chamber into one piece, the volume can be effectively reduced to meet the use requirements of a small space; by circulating the preheating chamber and setting the circulating preheating chamber as a preheating chamber and a circulating pump, and setting the preheating chamber as a liquid inlet chamber and a preheating chamber, the refrigerant can be transported to the preheating chamber through the circulating pump, and then absorb the heat of the pump body in the preheating chamber, thereby increasing the temperature of the refrigerant to prevent the refrigerant from being too low in temperature when entering the evaporative cold plate, ensuring that the refrigerant is completely evaporated in the evaporative cold plate, and improving the cooling capacity of the integrated preheating pump-driven two-phase flow system.

[0049] It should be understood that the application of the present application is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. An integrated preheating pump-driven two-phase flow system, characterized in that: It includes a condenser, a liquid storage tank, a circulating preheating chamber, and an evaporation cold plate that are connected in a closed loop in sequence; the condenser, the liquid storage tank, and the circulating preheating chamber are integrally formed. The circulating preheating chamber includes a preheating chamber and a circulating pump. The preheating chamber has a liquid inlet chamber and a preheating chamber that are isolated from each other. The circulating pump has a pump inlet, a pump body, and a pump outlet. The pump inlet is located in the liquid inlet chamber and is connected to the liquid storage tank. The pump body and the pump outlet are arranged in the preheating chamber. The evaporation cold plate is communicated with the preheating chamber; the liquid refrigerant flows into the preheating chamber through the pump outlet and exchanges heat with the pump body.

2. The integrated preheating pump-driven two-phase flow system according to claim 1, characterized in that: The preheating chamber includes: A chamber body; A partition plate, which is arranged in the chamber body and is used to isolate the inner cavity of the chamber body into a liquid inlet chamber and a preheating chamber.

3. The integrated preheating pump-driven two-phase flow system according to claim 2, characterized in that: The preheating chamber is also provided with a heating element, and the heating element is used to heat the liquid refrigerant.

4. The integrated preheating pump-driven two-phase flow system according to claim 3, characterized in that: The heating element is embedded in the chamber wall of the preheating chamber.

5. The integrated preheating pump-driven two-phase flow system according to claim 2, characterized in that: The pump body includes: A pump body; A pump housing, which is sleeved on the pump body and seals the pump body; A plurality of heat dissipation fins, and a plurality of the heat dissipation fins are uniformly formed on the outer peripheral surface of the pump housing.

6. The integrated preheating pump-driven two-phase flow system according to claim 5, characterized in that: A plurality of the heat dissipation fins isolate the preheating chamber in the height direction into a bottom flow channel, a plurality of intermediate flow channels, and a top flow channel. The pump outlet is connected to the bottom flow channel, and the top flow channel is connected to the evaporation cold plate.

7. The integrated preheating pump-driven two-phase flow system according to claim 6, characterized in that: The chamber body includes a bottom plate and a top plate that are oppositely arranged, and a first side plate, a second side plate, and a third side plate that are connected in a U shape between the bottom plate and the top plate; the pump body is arranged on the bottom plate, and the partition plate and the second side plate are respectively connected to both ends of the first side plate, the bottom plate, the third side plate, and the top plate; The heat dissipation fins include bottom fins, a plurality of first intermediate fins, a plurality of second intermediate fins, and top fins; Wherein, the bottom fins are respectively connected to the first side plate, the partition plate, and the third side plate to cooperate with the bottom plate and the second side plate to form the bottom flow channel; a plurality of the first intermediate fins and a plurality of the second intermediate fins are alternately arranged at intervals from bottom to top. A plurality of the first intermediate fins are respectively connected to the first side plate, the second side plate, and the third side plate to cooperate with the bottom plate and the partition plate to form a plurality of the intermediate flow channels. A plurality of the second intermediate fins are respectively connected to the first side plate, the partition plate, and the third side plate to cooperate with the bottom plate and the second side plate to form a plurality of the intermediate flow channels.

8. The integrated preheating pump-driven two-phase flow system according to claim 7, characterized in that: A plurality of heat dissipation fins also include a plurality of auxiliary fins arranged on the bottom flow channel and the top flow channel.

9. The integrated preheating type pump-driven two-phase flow system according to claim 1, characterized in that The tank body of the liquid storage tank is set as a heat-insulating tank body; The condenser includes a condenser body and a plurality of heat dissipation fans, and the condenser body is connected between the evaporation cold plate and the liquid storage tank.

10. The integrated preheating pump-driven two-phase flow system according to any one of claims 1 to 9, characterized in that: The integrated preheating type pump-driven two-phase flow system further includes: A temperature sensor, and the temperature sensor is arranged at the inlet of the evaporation cold plate.

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