Active and passive heat dredging integrated system of self-adaptive matching working medium

Abstract

The utility model belongs to the technical field of cooling and heat dissipation, and relates to an active and passive heat dredging integrated system of a self-adaptive matching working medium, which comprises an evaporator, a compressor, a condenser, a throttle valve, a plurality of bypass pipelines, a plurality of control valves and a controller which are sequentially connected through a main pipeline and form a closed cycle, the bypass pipeline comprises a first bypass connected with the compressor in parallel; the second bypass and the third bypass are connected with the throttle valve in parallel; a liquid storage tank is arranged on the third bypass, and the liquid storage tank contains the working medium inwards or releases the working medium outwards according to the pressure of the working medium in the main pipeline in the compressor mode and the heat pipe mode; according to the active and passive heat dredging integrated system adaptively matched with the working medium, the pipeline arrangement mode is optimized, the mode that the liquid storage tank stores the working medium or releases the working medium outwards is improved, the switching capacity of the system between a compressor mode and a heat pipe mode can be improved, smooth and rapid switching between the two modes is achieved, and the working efficiency is improved. Meanwhile, the operation stability of the system is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cooling and heat dissipation, and in particular relates to an active and passive heat conduction integrated system with adaptive matching working fluids. Background Art

[0002] Active heat transfer refers to heat transfer that occurs during a refrigeration cycle. For example, in an air conditioner, the compressor operates on a vapor-compression refrigeration cycle. Its core task is to draw in low-pressure, low-temperature refrigerant gas and then compress it into high-pressure, high-temperature gas through mechanical motion. This process allows the refrigerant to release more heat, providing power for the refrigeration cycle.

[0003] The opposite of active heat transfer is passive heat transfer. A heat pipe system, for example, is a passive thermal management system whose operating principles are primarily based on physical phenomena such as heat conduction and the rapid heat transfer properties of liquids. It leverages the principles of heat conduction and the rapid heat transfer properties of refrigerants to rapidly transfer heat from a heated object to the heat source. Its thermal conductivity even exceeds that of any known metal. A gravity heat pipe is essentially a closed pipe with one end heated and the other cooled. A working fluid is filled in this closed pipe. When one end of the pipe is heated, the liquid absorbs heat and evaporates into gas. This vaporized saturated vapor flows toward the cold end, where it condenses and releases heat. The condensed liquid then returns to the hot end under the influence of gravity, absorbing heat again and vaporizing. This cycle continuously transfers heat from the heat source to the cold source.

[0004] At present, the number of base stations, cabinets, and shelters is increasing year by year, and a large number of heat-generating equipment need to be cooled all year round. If cooling is completely dependent on the air-conditioning system, the air-conditioning compressor needs to run for a long time, which consumes a lot of energy. At present, in order to achieve energy conservation and emission reduction of the air-conditioning system, in addition to improving the energy efficiency ratio of the air-conditioning system itself, the main way is to reduce the running time of the air-conditioning compressor and make use of natural cold sources as much as possible. This has led to the emergence of a refrigeration system that combines the air-conditioning mode and the heat pipe mode.

[0005] Through early research, the applicant proposed an integrated active and passive heat conduction system based on pressure difference adaptive matching of working fluid and its control method. For details, see the Chinese patent publication (announcement) number CN117588861A. This integrated system includes a main line, which includes a compressor, a condenser, a throttling element and an evaporator connected in sequence by pipelines to form a closed loop, as well as a first bypass connected in parallel with the throttling element and a second bypass connected in parallel with the compressor; it also includes a controller, which can selectively close and start the first bypass and the second bypass to switch the integrated system between compressor mode and heat pipe mode; in addition, this integrated system also includes a liquid storage branch, which includes a liquid storage tank and a valve unit. The liquid storage branch is connected to the condenser outlet, and the liquid storage tank is installed on the liquid storage branch interface of the main line through the valve unit; the controller can control the valve unit to open and close, and thereby control the liquid storage tank to receive the working fluid inward or release the working fluid outward according to the working fluid pressure in the main line in the compressor mode and the heat pipe mode. This integrated system can switch between compressor mode and heat pipe mode. When the compressor is running, the high-pressure working fluid from the condenser can enter the liquid storage tank, fill it with a predetermined amount, and then close the valve. When switching to the heat pipe mode, the main line pressure will drop, at which time the valve unit will open and release the high-pressure working fluid. The liquid storage tank can ensure that the working quality of these two modes is in the optimal state and better matches the corresponding mode.

[0006] However, in the above-mentioned integrated active and passive heat conduction system and control method based on pressure difference adaptive matching of working fluid, due to the pressure difference between the liquid storage tank and the main line, the setting method of this liquid storage tank branch makes the liquid storage tank unable to communicate well with the system, and the working fluid therein has poor fluidity. For example, when the system just switches from compressor mode to heat pipe mode, the pressure at the condenser outlet is still relatively high, and the working fluid in the liquid storage tank is difficult to be discharged smoothly. Therefore, when the liquid storage tank in this integrated system receives the working fluid inward or releases the working fluid outward, there is a problem of unsmooth charging and discharging of the working fluid, resulting in poor ability of this integrated system to switch between compressor mode and heat pipe mode. In addition, this integrated system has a great influence on the operating state of the main line, especially the state of the refrigerant in the main line, and has the defect of unstable system operation process. Utility Model Content

[0007] The purpose of the present utility model is to address the above-mentioned technical problems and provide an integrated active and passive heat conduction system that adaptively matches the working fluid, so as to improve the system's ability to switch between compressor mode and heat pipe mode by improving the way the liquid storage tank receives the working fluid or releases the working fluid to the outside, thereby achieving smooth and rapid switching between the two modes and improving the operating stability of the system.

[0008] In view of this, the present invention provides an integrated active and passive heat dissipation system with adaptively matching working fluids, comprising:

[0009] Evaporator, compressor, condenser and throttle valve connected in sequence through the main pipeline to form a closed cycle;

[0010] and, a number of bypass lines, a number of control valves and controllers;

[0011] Wherein, the bypass pipeline includes:

[0012] a first bypass connected in parallel with the compressor;

[0013] a second bypass and a third bypass connected in parallel with the throttle valve;

[0014] A liquid storage tank is provided on the third bypass, and the opening and closing states of the inlet and outlet of the liquid storage tank are controlled by a control valve installed on the third bypass, thereby receiving the working fluid inwardly or releasing the working fluid outwardly according to the working fluid pressure in the main line in the compressor mode and the heat pipe mode;

[0015] The controller can selectively close and start the first bypass, the second bypass and the third bypass by regulating the status of each control valve, so that the integrated system can switch between the compressor mode and the heat pipe mode.

[0016] Furthermore, one end of the second bypass and the third bypass are respectively connected to the main line between the condenser and the throttle valve, and the connection point of the third bypass and the main line is located on the side close to the throttle valve, and the connection point of the second bypass and the main line is located on the side close to the condenser.

[0017] Furthermore, the other ends of the second bypass and the third bypass are respectively connected to the main line between the throttle valve and the evaporator, and the connection point of the third bypass and the main line is located on the side close to the throttle valve, and the connection point of the second bypass and the main line is located on the side close to the evaporator.

[0018] Furthermore, the height difference between the evaporator and the condenser is recorded as H, and the height difference between the liquid storage tank and the condenser is 0.6 to 0.9H.

[0019] Furthermore, the length of the main line between the condenser and the throttle valve is recorded as L, and the connection point of the third bypass and the main line between the condenser and the throttle valve is recorded as point A, then the distance between the point A and the condenser outlet is 0.4~0.6L; the length of the main line between the throttle valve and the evaporator inlet is recorded as S, and the connection point of the third bypass and the main line between the cold throttle valve and the evaporator is recorded as point B, then the distance between the point B and the evaporator inlet is 0.5~0.8L.

[0020] Furthermore, the control valve includes:

[0021] a fourth control valve and a fifth control valve respectively provided at both ends of the first bypass, wherein the fourth control valve and the fifth control valve are three-way valves; by regulating the states of the fourth control valve and the fifth control valve, the outlet of the evaporator can be connected to the inlet of the condenser through the first bypass or via the compressor;

[0022] And, a third control valve is arranged on the second bypass, and the third control valve is located at the connection point of the second bypass and the main line between the condenser and the throttle valve, and the third control valve is a three-way valve; by adjusting the state of the third control valve, the outlet of the condenser can be connected to the inlet of the evaporator through the second bypass or through the throttle valve.

[0023] Furthermore, the control valve further comprises:

[0024] a first control valve disposed on the third bypass, wherein the inlet of the liquid storage tank is connected to the main line between the condenser and the throttle valve via the first control valve, and the controller opens or closes the inlet of the liquid storage tank by regulating the state of the first control valve;

[0025] A second control valve is arranged on the third bypass, and the outlet of the liquid storage tank is connected to the main line between the throttle valve and the evaporator through the second control valve. The controller opens or closes the outlet of the liquid storage tank by adjusting the state of the second control valve.

[0026] Furthermore, in the compressor mode:

[0027] The first control valve is opened, the second control valve is closed, the third control valve is connected to the main line between the condenser and the throttle valve, and the second bypass is disconnected; the fourth control valve and the fifth control valve are connected to the main line between the evaporator and the condenser, the first bypass is disconnected, the compressor starts running, and after the system's working fluid filling rate is reduced to the optimal filling rate, the first control valve is closed.

[0028] Furthermore, in the heat pipe mode:

[0029] The first control valve is closed, the second control valve is opened, the third control valve is connected to the condenser and the second bypass, the fourth control valve and the fifth control valve are connected to the first bypass, the compressor is turned off, and after the system's working fluid filling rate increases to the optimal filling rate, the second control valve is closed.

[0030] Furthermore, the active and passive heat dissipation integrated system with adaptively matched working fluids is used to cool and dissipate heat from heat-generating equipment in base stations, cabinets or shelters.

[0031] The beneficial effects of the present invention are as follows: the integrated active and passive heat conduction system for adaptively matching the working fluid optimizes the pipeline layout and improves the way in which the liquid storage tank receives the working fluid or releases the working fluid to the outside, thereby improving the system's ability to switch between the compressor mode and the heat pipe mode, achieving smooth and rapid switching between the two modes, and improving the operating stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the operating state of the active and passive heat conduction integrated system for adaptively matching working fluids of the present invention when it switches from the heat pipe mode to the compressor mode;

[0033] Figure 2 This is a schematic diagram of the operating state of the active and passive heat dissipation integrated system for adaptively matching working fluids in the present invention in compressor mode;

[0034] Figure 3 This is a schematic diagram of the operating state of the active and passive heat conduction integrated system for adaptively matching working fluids of the present invention when it switches from the compressor mode to the heat pipe mode;

[0035] Figure 4 This is a schematic diagram of the operating state of the active and passive heat conduction integrated system with adaptive matching working fluids in the heat pipe mode of the utility model;

[0036] The marks in the figure are:

[0037] 1. Evaporator; 2. Condenser; 3. Compressor; 4. Throttle valve; 5. Liquid storage tank; 6. Bypass line; 601, first bypass; 602, second bypass; 603, third bypass; 7. Control valve; 701, first control valve; 702, second control valve; 703, third control valve; 704, fourth control valve; 705, fifth control valve. DETAILED DESCRIPTION

[0038] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0039] In the description of this application, it should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0040] It should be noted that the terms "first," "second," etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and that the objects distinguished by "first," "second," etc. are generally of the same type, and do not limit the number of objects. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0041] It should be noted that, in the description of this application, the directions or positional relationships indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional terms do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional terms "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0042] It should be noted that, in the present application, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0043] like Figures 1 to 3 As shown, an integrated system of active and passive heat dissipation with adaptive matching of working fluids includes:

[0044] An evaporator 1, a compressor 3, a condenser 2, and a throttle valve 4 are sequentially connected through a main line to form a closed cycle;

[0045] and, a plurality of bypass lines 6, a plurality of control valves 7 and a controller;

[0046] Wherein, the bypass line 6 includes:

[0047] A first bypass 601 connected in parallel with the compressor 3;

[0048] A second bypass 602 and a third bypass 603 connected in parallel with the throttle valve 4;

[0049] A liquid storage tank 5 is provided on the third bypass 603. The opening and closing states of the inlet and outlet of the liquid storage tank 5 are controlled by a control valve 7 installed on the third bypass 603. The liquid storage tank 5 then receives or releases the working fluid inwardly or outwardly according to the working fluid pressure in the main line in the compressor mode and the heat pipe mode. The third bypass 603 and the liquid storage tank 5 constitute a liquid storage branch in the integrated system.

[0050] The controller can selectively close and start the first bypass 601, the second bypass 602 and the third bypass 603 by regulating the status of each control valve 7, so that the integrated system can switch between the compressor mode and the heat pipe mode.

[0051] Furthermore, one end of the first bypass 601 is connected to the main line between the evaporator 1 and the compressor 3 , and the other end is connected to the main line between the compressor 3 and the condenser 2 .

[0052] Furthermore, one end of the second bypass 602 and the third bypass 603 are respectively connected to the main line between the condenser 2 and the throttle valve 4, and the connection point of the third bypass 603 and the main line is located on the side close to the throttle valve 4, and the connection point of the second bypass 602 and the main line is located on the side close to the condenser 2.

[0053] Furthermore, the other ends of the second bypass 602 and the third bypass 603 are respectively connected to the main line between the throttle valve 4 and the evaporator 1, and the connection point of the third bypass 603 and the main line is located on the side close to the throttle valve 4, and the connection point of the second bypass 602 and the main line is located on the side close to the evaporator 1.

[0054] In the integrated active and passive heat conduction system with adaptive matching of working fluids described in the present invention, when switching from the heat pipe mode to the compressor mode, the working fluid needs to be stored in the liquid storage tank 5. At this time, due to the operation of the compressor, the working fluid pressure in the main line is relatively high, especially the pressure at the outlet of the condenser 2 is relatively high. At the same time, the working fluid in the liquid storage tank 5 is relatively small and the pressure is relatively low. Therefore, the integrated system can smoothly store part of the working fluid discharged by the condenser 2 into the liquid storage tank 5.

[0055] In addition, in the integrated active and passive heat conduction system with adaptive matching of working fluids described in the present invention, when switching from compressor mode to heat pipe mode, the liquid storage tank 5 needs to release the working fluid to the outside. At this time, since the compressor 3 stops running, the pressure of the working fluid circulating in the system decreases. At the same time, there is more working fluid in the liquid storage tank 5 and the pressure is higher. The pressure at the outlet of the liquid storage tank 5 is greater than the pressure at the inlet of the evaporator 1. Therefore, the integrated system can smoothly discharge the working fluid in the liquid storage tank 5 into the main line.

[0056] Preferably, the height difference between the evaporator 1 and the condenser 2 is recorded as H, and the height difference between the liquid storage tank 5 and the condenser 2 is 0.6-0.9H.

[0057] Therefore, by fully increasing the installation height of the liquid storage tank 5 , the gravitational potential energy of the working medium in the liquid storage tank 5 can be increased, thereby promoting smooth discharge of the working medium therein.

[0058] It should be noted that the installation height of each component in the present invention is the height of its center point.

[0059] Preferably, the length of the main line between the condenser 2 and the throttle valve 4 is recorded as L, and the connection point between the third bypass 603 and the main line between the condenser 2 and the throttle valve 4 is recorded as point A, then the distance between the point A and the outlet of the condenser 2 is 0.4 to 0.6L.

[0060] Since the pressure in the main line gradually decreases from the outlet of the condenser 2 to the inlet of the throttle valve 4, by setting the point A at an appropriate position, on the one hand, a natural pressure difference can be formed between the liquid storage tank 5 and the throttle valve 4, ensuring that the working fluid can flow smoothly into the liquid storage tank 5. At the same time, space can be reserved for the setting of the second bypass 602, so that when the system switches to the heat pipe mode, the working fluid can smoothly enter the second bypass 602 from the outlet of the condenser 2.

[0061] Preferably, the length of the main line between the throttle valve 4 and the inlet of the evaporator 1 is recorded as S, and the connection point between the third bypass 603 and the main line between the cold throttle valve 4 and the evaporator 1 is recorded as point B, then the distance between the point B and the inlet of the evaporator 1 is 0.5~0.8L.

[0062] In this way, the adverse effect of the working medium discharged from the liquid storage tank 5 on the flow of the working medium in the second bypass 602 can be alleviated, and at the same time, favorable conditions are provided for the mixing of the working medium in the second bypass 602 and the third bypass 603, thereby promoting the stable operation of the system.

[0063] Furthermore, the control valve 7 includes:

[0064] A fourth control valve 704 and a fifth control valve 705 are respectively provided at both ends of the first bypass 601, and the fourth control valve 704 and the fifth control valve 705 are three-way valves;

[0065] By regulating the states of the fourth control valve 704 and the fifth control valve 705 , the outlet of the evaporator 1 can be connected to the inlet of the condenser 2 through the first bypass 601 or the compressor 3 .

[0066] Furthermore, the control valve 7 further includes:

[0067] a third control valve 703 provided on the second bypass 602, the third control valve 703 being located at a connection point between the second bypass 602 and the main pipeline between the condenser 2 and the throttle valve 4, the third control valve 703 being a three-way valve;

[0068] By adjusting the state of the third control valve 703 , the outlet of the condenser 2 can be connected to the inlet of the evaporator 1 through the second bypass 602 or via the throttle valve 4 .

[0069] Furthermore, the control valve 7 further includes:

[0070] a first control valve 701 disposed on the third bypass 603 and located at the inlet of the liquid storage tank 5, i.e., the inlet of the liquid storage tank 5 is connected to the main line between the condenser 2 and the throttle valve 4 via the first control valve 701; the controller opens or closes the inlet of the liquid storage tank 5 by regulating the state of the first control valve 701;

[0071] The second control valve 702 is arranged on the third bypass 603, and the second control valve 702 is located at the outlet of the liquid storage tank 5, that is, the outlet of the liquid storage tank 5 is connected to the main line between the throttle valve 4 and the evaporator 1 through the second control valve 702; the controller opens or closes the outlet of the liquid storage tank 5 by adjusting the state of the second control valve 702.

[0072] When the ambient temperature is high, such as above 15°C, the active and passive heat dissipation integrated system for adaptively matching the working medium operates in compressor mode. In this mode:

[0073] The first control valve 701 is opened, the second control valve 702 is closed, the third control valve 703 connects the main line between the condenser 2 and the throttle valve 4, and the second bypass 602 is disconnected; the fourth control valve 704 and the fifth control valve 705 connect the main line between the evaporator 1 and the condenser 2, and the first bypass 601 is disconnected;

[0074] The compressor 3 starts running. At this time, the working fluid from the outlet of the evaporator 1 enters the compressor 3 through the fourth control valve 704, is compressed by the compressor 3, and is discharged into the condenser 2 through the fifth control valve 705. After cooling in the condenser 2, part of the working fluid flows into the liquid storage tank 5 through the first control valve 701, and the remaining working fluid enters the evaporator 1 through the throttle valve 4.

[0075] When the working fluid filling rate of the system is reduced to the optimal filling rate, the first control valve 701 is closed to stop the collection of the working fluid, and the integrated system maintains the current state to operate the compressor mode.

[0076] Taking the actual operation of an integrated active and passive heat dissipation system with adaptively matched working fluids as an example, in the compressor mode, as compressor 3 starts operating, the exhaust pressure and exhaust temperature of compressor 3 increase rapidly. For example, the exhaust temperature of compressor 3 can quickly rise to 50°C. At this time, the evaporation temperature of the working fluid in evaporator 1 can reach approximately 8°C, and the condensation temperature of the working fluid in condenser 2 can reach approximately 30°C. At this time, some of the working fluid discharged from condenser 2 can be transferred to the liquid storage tank 5 along the third bypass 603 to be stored, thereby reducing the working fluid filling rate of the system in the compressor mode to the optimal filling rate. As the working fluid continues to enter the liquid storage tank 5, the system's working fluid filling rate gradually decreases. When the system's working fluid filling rate decreases to the optimal filling rate, the evaporation temperature of the working fluid in evaporator 1 can reach approximately 8°C, and the condensation temperature of the working fluid in condenser 2 can be approximately 50°C. At this time, the first control valve 701 can be closed to stop the storage of working fluid, and the integrated system maintains the current state of operating in the compressor mode.

[0077] When the ambient temperature is high, such as below 15°C, the active and passive heat dissipation integrated system with adaptive matching of working fluids switches from compressor mode to heat pipe mode. In heat pipe mode:

[0078] The first control valve 701 is closed, the second control valve 702 is opened, the third control valve 703 connects the condenser 2 with the second bypass 602, and no working medium passes through the throttle valve 4; the fourth control valve 704 and the fifth control valve 705 connect the evaporator 1 and the condenser 2 with the first bypass 601, and the compressor 3 is turned off;

[0079] At this time, the working fluid from the outlet of the evaporator 1 enters the first bypass 601 through the fourth control valve 704, and then enters the condenser 2. After being cooled in the condenser 2, it enters the second bypass 602 through the third control valve 703. At the same time, the working fluid in the liquid storage tank 5 is discharged through the second control valve 702, mixed with the working fluid from the second bypass 602, and then enters the evaporator 1.

[0080] When the working fluid filling rate of the system increases to the optimal filling rate, the second control valve 702 is closed to stop releasing the working fluid outward, and the integrated system maintains the current state and operates in the heat pipe mode.

[0081] Taking the actual operation process of an integrated system of active and passive heat conduction with adaptively matched working fluids as an example, in the heat pipe mode, the working fluid in the liquid storage tank 5 is in a saturated state of about 15°C before being closed, which is higher than the subcooled working fluid temperature of about 8°C at the inlet of the evaporator 1. At this time, the working fluid in the liquid storage tank 5 will flow into the main line through the second control valve 702. When the working fluid filling rate of the system increases to the optimal filling rate, the second control valve 702 is closed. During the actual operation of the integrated system, the evaporation temperature of the working fluid is about 15°C and the condensation temperature is about 12°C. After the liquid storage tank 5 is closed, its temperature will gradually decrease to be consistent with the ambient temperature.

[0082] The active and passive heat dissipation integrated system with adaptively matching working fluids described in the utility model can be used in base stations, cabinets, shelters and other places to cool and dissipate heat from heat-generating equipment.

[0083] In summary, the integrated active and passive heat conduction system for adaptively matching working fluids described in the present invention can improve the system's ability to switch between compressor mode and heat pipe mode by optimizing the pipeline layout and improving the way the liquid storage tank receives the working fluid or releases the working fluid to the outside, thereby achieving smooth and rapid switching between the two modes and improving the system's operating stability.

[0084] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. An integrated system of active and passive heat dissipation with adaptive matching of working fluids, characterized in that: include: An evaporator (1), a compressor (3), a condenser (2), and a throttle valve (4) are sequentially connected through a main pipeline to form a closed cycle; and, a plurality of bypass lines (6), a plurality of control valves (7) and a controller; Wherein, the bypass line (6) comprises: a first bypass (601) connected in parallel with the compressor (3); a second bypass (602) and a third bypass (603) connected in parallel with the throttle valve (4); A liquid storage tank (5) is provided on the third bypass (603), and the liquid storage tank (5) controls the opening and closing states of its inlet and outlet through a control valve (7) installed on the third bypass (603), thereby receiving working fluid inwardly or releasing working fluid outwardly according to the working fluid pressure in the main pipeline in the compressor mode and the heat pipe mode; The controller can selectively close and start the first bypass (601), the second bypass (602) and the third bypass (603) by regulating the status of each control valve (7), so that the integrated system can switch between the compressor mode and the heat pipe mode.

2. The active and passive heat dissipation integrated system with adaptive matching working medium according to claim 1 is characterized in that: One end of the second bypass (602) and the third bypass (603) are respectively connected to the main line between the condenser (2) and the throttle valve (4), and the connection point between the third bypass (603) and the main line is located on a side close to the throttle valve (4), and the connection point between the second bypass (602) and the main line is located on a side close to the condenser (2).

3. The active and passive heat dissipation integrated system with adaptive matching working medium according to claim 2 is characterized in that: The other ends of the second bypass (602) and the third bypass (603) are respectively connected to the main line between the throttle valve (4) and the evaporator (1), and the connection point between the third bypass (603) and the main line is located on a side close to the throttle valve (4), and the connection point between the second bypass (602) and the main line is located on a side close to the evaporator (1).

4. The integrated active and passive heat dissipation system with adaptive matching working medium according to claim 3 is characterized in that: The height difference between the evaporator (1) and the condenser (2) is recorded as H, and the height difference between the liquid storage tank (5) and the condenser (2) is 0.6 to 0.9H.

5. The integrated active and passive heat dissipation system with adaptively matched working fluids according to claim 3 is characterized in that: The length of the main line between the condenser (2) and the throttle valve (4) is recorded as L, and the connection point of the third bypass (603) and the main line between the condenser (2) and the throttle valve (4) is recorded as point A, and the distance between point A and the outlet of the condenser (2) is 0.4 to 0.6 L; the length of the main line between the throttle valve (4) and the inlet of the evaporator (1) is recorded as S, and the connection point of the third bypass (603) and the main line between the throttle valve (4) and the evaporator (1) is recorded as point B, and the distance between point B and the inlet of the evaporator (1) is 0.5 to 0.8 L.

6. The active and passive heat dissipation integrated system with adaptive matching working medium according to claim 1 or 2, characterized in that: The control valve (7) comprises: A fourth control valve (704) and a fifth control valve (705) are respectively provided at both ends of the first bypass (601), and the fourth control valve (704) and the fifth control valve (705) are three-way valves; by regulating the states of the fourth control valve (704) and the fifth control valve (705), the outlet of the evaporator (1) can be connected to the inlet of the condenser (2) through the first bypass (601) or through the compressor (3); and a third control valve (703) provided on the second bypass (602), the third control valve (703) being located at a connection point between the second bypass (602) and the main pipeline between the condenser (2) and the throttle valve (4), the third control valve (703) being a three-way valve; by regulating the state of the third control valve (703), the outlet of the condenser (2) can be connected to the inlet of the evaporator (1) through the second bypass (602) or through the throttle valve (4).

7. The integrated active and passive heat dissipation system with adaptively matched working fluids according to claim 6 is characterized in that: The control valve (7) further comprises: a first control valve (701) provided on the third bypass (603); the inlet of the liquid storage tank (5) being connected to the main pipeline between the condenser (2) and the throttle valve (4) via the first control valve (701); and the controller opening or closing the inlet of the liquid storage tank (5) by regulating the state of the first control valve (701); A second control valve (702) is provided on the third bypass (603); the outlet of the liquid storage tank (5) is connected to the main pipeline between the throttle valve (4) and the evaporator (1) via the second control valve (702); and the controller opens or closes the outlet of the liquid storage tank (5) by regulating the state of the second control valve (702).

8. The active and passive heat dissipation integrated system with adaptive matching working medium according to claim 7 is characterized in that: In the described compressor mode: The first control valve (701) is opened, the second control valve (702) is closed, the third control valve (703) is connected to the main line between the condenser (2) and the throttle valve (4), and the second bypass (602) is disconnected; the fourth control valve (704) and the fifth control valve (705) are connected to the main line between the evaporator (1) and the condenser (2), the first bypass (601) is disconnected, the compressor (3) starts to run, and after the working fluid filling rate of the system is reduced to an optimal filling rate, the first control valve (701) is closed.

9. The active and passive heat dissipation integrated system with adaptive matching working medium according to claim 7 is characterized in that: In the heat pipe mode: The first control valve (701) is closed, the second control valve (702) is opened, the third control valve (703) is connected to the condenser (2) and the second bypass (602), the fourth control valve (704) and the fifth control valve (705) are connected to the first bypass (601), the compressor (3) is closed, and after the working fluid filling rate of the system increases to an optimal filling rate, the second control valve (702) is closed.

10. The active and passive heat dissipation integrated system with adaptive matching working medium according to claim 1, characterized in that: The active and passive heat dissipation integrated system with adaptively matched working fluids is used to cool and dissipate heat from heat-generating equipment in base stations, cabinets or shelters.

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