CN112218495A

CN112218495A - Negative pressure structure of liquid cooling radiator, negative pressure monitoring method and liquid cooling radiator

Info

Publication number: CN112218495A
Application number: CN202011068188.5A
Authority: CN
Inventors: 程嘉俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-08
Filing date: 2020-10-08
Publication date: 2021-01-12

Abstract

The invention relates to a negative pressure structure, a negative pressure liquid cooling radiator and a negative pressure monitoring method, wherein the negative pressure structure comprises a gas-liquid pump, the inlet of the gas-liquid pump is communicated with the gas in the gas collecting device through a first outlet above the liquid level in the gas collecting device, the gas collecting device is provided with a second inlet and a third outlet which are connected in series to enter a liquid path of the liquid cooling system, the third outlet is positioned below the liquid level, so that cold liquid in the liquid cooling system flows through the gas collecting device and bubbles in the cold liquid float and concentrate on the upper end of the gas collecting device, the gas collecting device can be merged into the original liquid cooling system in a newly added mode, or an air outlet is additionally arranged above the liquid level of the original liquid cooling system on the existing liquid storage device or a container with the liquid storage function and communicated with the inlet of the gas-liquid pump so that the container replaces the gas collecting device, the first outlet faces the gas-liquid pump and is provided with a fluid one-way conduction device, so that liquid or gas in the gas collecting device can only flow out of the gas collecting device.

Description

Negative pressure structure of liquid cooling radiator, negative pressure monitoring method and liquid cooling radiator

Technical Field

The invention relates to the technical field of liquid cooling heat dissipation for dissipating heat of electronic circuit equipment including a computer host, a power supply, a charging pile and the like, in particular to a negative pressure structure, a negative pressure monitoring method and a liquid cooling radiator of the liquid cooling radiator.

Background

With the development of science and technology, the power consumption of electrified equipment such as computers, charging piles and the like is gradually increased, the heat dissipation requirement is urgent, three types of radiators with poor effects are available in the market at present, namely a passive radiator 1 with only heat dissipation fins and insufficient heat dissipation capacity is available; 2, the air-cooled radiator is additionally provided with a fan on the basis of radiating fins, so that the radiating capacity is enhanced, but the wind noise is large; 3 liquid cooling radiator, common liquid cooling radiator all is the malleation radiator in the existing market, because of the water pump to liquid cooling head pump water promptly, cold liquid is heated the thermal expansion simultaneously and leads to containing the liquid cooling head in key liquid highway section liquid way internal pressure be greater than external atmospheric pressure, in case the damage can outside weeping promptly, because present liquid cooling head interface is inside at the case again, so in case the weeping just causes serious electrical damage easily.

The schemes of the prior patents CN201910733274.4 and CN201910244160.3 are all pressure relief modes when the internal hydraulic pressure is greater than the threshold, and the internal hydraulic pressure of the liquid cooling radiator is greater than the outside, so that once the radiator is damaged, the leakage cannot be avoided.

The scheme of the prior patent CN103699195B is too simple and crude, firstly because it lacks devices such as check valve, so the negative pressure device needs to be opened all the time, which is not beneficial to environmental protection and brings noise to influence user experience, secondly because it lacks variable volume cavity and because the cold liquid is almost incompressible, so the negative pressure device can not change the liquid level of the cold liquid when the third interface of the cooling liquid box is above the liquid level, this scheme has no practicality, secondly because it is equipped with preset time value and its negative pressure device needs to be started after the working of its liquid cooling radiator is preset time, so the cold liquid cooling radiator cold liquid leakage before the starting of its negative pressure device can not be avoided, finally because each part in the liquid cooling radiator has different water resistances, and the currently popular water cooling head and the like all adopt the injection technology, this injection technology needs high pressure, bring large water resistance, even it can not guarantee through the negative pressure device to extract the gas in the liquid cooling radiator, the water pump outlet and the large water resistance part can not generate local high If the pressure is broken, there is a possibility that the coolant may leak out.

Disclosure of Invention

The negative pressure structure, the negative pressure monitoring method and the liquid cooling radiator are provided to solve the problems of liquid leakage and derived electrical faults generated when the electronic circuit equipment is cooled and radiated by liquid.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

disclosed is a negative pressure structure, which comprises a manual air extractor such as a needle cylinder, an air extractor or a gas-liquid pump such as a diaphragm pump, a gear pump or a peristaltic pump, wherein an inlet of the manual air extractor or the gas-liquid pump is communicated with gas in a gas collecting device through a first outlet arranged above the liquid level in the gas collecting device to form a first passage, so that the gas or liquid in the first passage is pumped out of the gas collecting device through the gas-liquid pump, the gas collecting device is a container which is made of a cold liquid leakage-proof material such as silica gel, plastic or metal and can store the solution without leakage, a second inlet and a third outlet are arranged to be connected in series into a liquid path of a liquid cooling radiator, the third outlet is arranged below the liquid level, bubbles in the cold liquid when the cold liquid in the radiator flows through the gas collecting device float and concentrate on the upper end of the gas collecting device, the gas collecting device can be used as an independent component to be connected in series into the original liquid cooling radiator, and can be combined with an existing liquid storage, namely, the first outlet is additionally arranged above the liquid level in the container and communicated with the inlet of the manual air extractor or the gas-liquid pump so that the container replaces a gas collecting device to form a first passage. Make through first passageway the inside negative pressure that keeps of liquid cooling system, cold liquid can not reveal when its damage, can continue normal use after adopting the gas-liquid pump that power is suitable even after the damage, only need guarantee the gas flow of gas-liquid pump combustion gas is greater than the inspiratory tolerance of damaged mouth.

In at least one embodiment of the invention, energy sources such as electric energy and high-pressure air required by the gas-liquid pump can be obtained from the outside of the equipment to be radiated, and not only can be obtained by the equipment to be radiated, so that the equipment to be radiated can be powered off as required, the operation of the negative pressure structure is not influenced, and the internal pressure of the liquid cooling system is always kept to be lower than the outside.

In at least one embodiment of the present invention, the suction lift of the gas-liquid pump is greater than the lift of the water pump in the liquid cooling system, and the pressure at the water outlet of the water pump in the liquid cooling system is lower than the outside no matter the water pump is started or stopped. The leakage possibility caused by the fact that the local pressure is higher than the outside due to the flow resistance of a liquid path and the pumping pressure of a water pump in the liquid cooling system is avoided.

In at least one embodiment of the present invention, the second inlet is connected to a water outlet of a water pump in the liquid cooling system, a water inlet of the water pump is connected to a water outlet of another component in the liquid cooling system, and a water inlet of another component in the liquid cooling system is connected to a third outlet of the gas collecting device or the container. The water outlet of the water pump is directly communicated into the gas collecting device to reduce the positive pressure of the water outlet of the water pump, so that the safety purpose is achieved.

In at least one embodiment of the present invention, the liquid supplying apparatus is comprised of a sealed container made of a liquid-tight material such as plastic, glass, rubber, or metal, such as a bottle, a tank, a bag, or a piston cavity, and the liquid supplying apparatus is provided with a liquid outlet connected in series or in parallel to the liquid-cooled heat sink. The liquid cooling radiator is used for evaporating and dissipating cold liquid after being used for a long time, and the liquid supplementing device is arranged, so that the effect of automatically supplementing the cold liquid in real time is achieved, and the danger of heat dissipation failure caused by lack of the cold liquid is avoided.

In at least one embodiment of the present invention, the liquid replenishing device is connected in series or in parallel to an outlet of a water pump in the liquid-cooled heat sink. The positive pressure of the water outlet of the water pump is reduced through the liquid supplementing device, so that the situation that the local pressure is higher than the external atmospheric pressure due to overhigh pressure at the outlet of the water pump and overhigh water resistance of other assemblies in the liquid cooling radiator is avoided.

In at least one embodiment of the present invention, the fluid infusion apparatus includes a housing, the housing is partially or entirely a piston and piston chamber structure, the piston and piston chamber structure is connected in a sealing and sliding manner, one of the piston and piston chamber structure is a fixed member fixed or integrated to the housing, the other is a moving member, the housing is sealed and moves through the moving member to form a sealed variable volume chamber, or the housing is a deformable portion made of a flexible material such as silica gel, rubber, plastic film, and bellows, the housing is sealed and deforms through the deformable portion to change the volume to form a sealed variable volume chamber, after the volume of the variable volume chamber is reduced, the variable volume chamber is connected in parallel in the liquid cooling heat sink through a fluid port in a sealing manner, or is connected in series in the liquid cooling heat sink through a fluid port in a series point in the liquid cooling heat sink in a sealing fluid path in a sealing manner so that the variable volume chamber is connected, at least one of a1 or a2 or a3 or a4 is satisfied, so that the liquid pressure of the liquid in the liquid path from the liquid inlet of the fluid pump to the parallel point or the serial point in the counter-flow direction in the liquid-cooled radiator is lower than the external atmospheric pressure,

a1, the deformable part is made of elastic material such as silica gel and rubber, the elastic force is larger than the force required by the volume-variable cavity to recover at least partial volume after the liquid-cooled radiator is damaged,

a2, means for increasing potential energy due to volume reduction of said variable volume chamber being provided within or outside said variable volume chamber, said means generating a force greater than the force required by said variable volume chamber to recover at least part of its volume following breakage of said liquid-cooled heat sink,

a3, a power device such as a motor or a pressure pump or an electromagnet is arranged in or outside the variable volume cavity, the power device directly or indirectly acts on a cavity which generates displacement along with the volume change in the variable volume cavity through a transmission device such as a push rod, a pull rope or a pressure transmission device such as a pipeline and a piston, the force acting on the cavity which generates the displacement is larger than the force required by the variable volume cavity for recovering at least partial volume after the liquid cooling radiator is damaged,

a4 at least part of the volume to be restored of the variable volume cavity is below the altitude of all cold liquid in the liquid section which needs to pass through the negative pressure structure and make the cold liquid pressure in the variable volume cavity less than the external atmospheric pressure, the variable volume cavity contains the cold liquid, and the variable volume cavity can restore at least part of the volume after a damaged opening is generated in the liquid section which needs to pass through the negative pressure structure and make the cold liquid pressure in the variable volume cavity less than the external atmospheric pressure only by the gravity of the cold liquid in the variable volume cavity.

In at least one embodiment of the present invention, the potential energy increasing device comprises an elastic potential energy device such as a spring or a leaf spring, two ends of the device which change positions with respect to each other are mounted at one end of the housing and the other end of the device is mounted at the deformable part or another housing which is connected with the deformable part in a sealing manner, one end of the device is mounted at the housing or the fixed part and the other end of the device is mounted at the moving part, the potential energy increasing device comprises a pressure potential energy device such as a capsule or a piston structure, two ends of the device which change positions with respect to each other are mounted at one end of the housing and the other end of the device is mounted at the deformable part or another housing which is connected with the deformable part in a sealing manner, one end of the device is mounted at the housing or the fixed part and the other end of the device is mounted at the moving part, the potential energy increasing device comprises a magnetic The device comprises a device for increasing potential energy, a device for increasing potential energy and a device for increasing potential energy, wherein the device is directly or indirectly connected with the deformable part or the moving part through a force transmission mechanism such as a lever, a fixed pulley and a rope.

In at least one embodiment of the present invention, the housing is at least provided with a skeleton or a shell, so as to reserve a space for accommodating the increased volume of the housing and protect the housing.

In at least one embodiment of the present invention, the liquid replenishing device includes a housing, the housing is sealed to form a sealed cavity, the sealed cavity is provided with at least one air hole for sealing and communicating with the external atmospheric pressure, the liquid level in the sealed cavity is always lower than the air hole, the sealed cavity is connected in parallel with the liquid-cooled radiator through a liquid port, the liquid inlet is connected in parallel with the liquid-cooled radiator in a sealed manner, the liquid port or a pipeline connected with the liquid port in a sealed manner is immersed in the cold liquid at the inner end of the sealed cavity, or the sealed cavity is connected in series with the liquid-cooled radiator through the liquid inlet and the liquid outlet, the liquid outlet or the pipeline connected with the liquid outlet in a sealed manner is immersed in the cold.

In at least one embodiment of the present invention, a pressurized fluid one-way conduction device, such as a pressurized one-way valve or a pressure relief valve, is disposed between the liquid outlet of the liquid replenishing device and the liquid-cooled heat sink, so that the cold liquid in the liquid-cooled heat sink can flow into the liquid-cooled heat sink only when the pressure of the cold liquid in the liquid-cooled heat sink is lower than a preset value compared with the external atmospheric pressure. Through setting up fluid one-way device that switches on is pressed in the area makes inside keeping higher degree negative pressure of liquid cooling radiator increases its damaged mouthful department when liquid cooling radiator is damaged is to the suction of outside air, promotes the security performance.

In at least one embodiment of the present invention, the liquid outlet of the liquid replenishing device is connected to the liquid-cooled radiator through 2 pipes or through a three-way connector, a first interface of the three-way connector is connected to the liquid outlet of the liquid replenishing device/the liquid-cooled radiator, a second interface of the three-way connector is connected to the liquid-cooled radiator/the liquid replenishing device, the 2 pipes or the second interface pipe is provided with an opposite fluid one-way conduction device so that the two pipes can only be conducted in one way, the fluid one-way conduction device provided at the path where the liquid replenishing device conducts to the liquid-cooled radiator is a pressurized fluid one-way conduction device, the liquid-cooled radiator is conducted when the pressure in the liquid-cooled radiator is lower than the pressure of the liquid replenishing device and reaches a preset pressure difference so that the cold liquid in the liquid replenishing device flows into the liquid-cooled radiator, and the fluid one-way conduction device provided at the path where, the positive opening pressure is less than 5kpa, so that the cold liquid in the liquid cooling radiator can flow into the liquid supplementing device through the liquid level difference. By arranging the fluid one-way conduction device opposite to the pressurized fluid one-way conduction device at the position parallel to the pressurized fluid one-way conduction device, when the internal pressure of the liquid cooling radiator tends to be external after the liquid cooling radiator is damaged or the cold liquid is evaporated, the cold liquid can flow back to the liquid supplementing device, and the overall safety is improved.

In at least one embodiment of the present invention, when the fluid infusion apparatus is connected in parallel to the external fluid path through one fluid port, the negative pressure structure is connected in parallel to the external fluid path through a guiding manifold, the guiding manifold at least includes a first port hermetically communicating with the internal first fluid path and the external fluid path fluid inlet, a second port hermetically communicating with the internal second fluid path and the external fluid path fluid outlet, and a third port hermetically communicating with the internal third fluid path and the negative pressure structure internal variable volume cavity or sealed cavity, the internal first fluid path, the internal second fluid path, and the internal third fluid path are located inside the guiding manifold and are communicated with each other, the turning angle of the cold fluid from the internal second fluid path to the internal first fluid path or from the internal first fluid path to the internal second fluid path is greater than 90 degrees, and the turning angle of the cold fluid from the internal third fluid path to the internal second fluid path or from the internal second fluid path to the internal third fluid path is less than 90 degrees, that is, when the cold fluid flows from the internal first fluid path or the internal third fluid path, the cold fluid preferentially flows from the internal third fluid path to the external fluid path or the internal third fluid And then the flow out of the way. Through the arrangement of the guide multi-way, cold liquid pumped out by the water pump preferentially enters the liquid supplementing device, so that negative pressure is further kept between the liquid outlet of the liquid supplementing device and the liquid inlet of the water pump.

In at least one embodiment of the present invention, the negative pressure structure includes a liquid storage heat dissipation blanket, the liquid storage heat dissipation blanket is made of liquid-proof soft film such as rubber, silica gel, polyethylene, polypropylene, and aluminum film, the bag opening is sealed to form a sealing bag, the liquid inlet and outlet pipes are led out and connected in series in the liquid cooling heat sink, the spreading area of the heat dissipation blanket is larger than 0.2 square meter, the sealing bag is spread on the heat transfer surface such as ground, table surface, and wall surface, the cooling liquid is stored in the sealing bag, and the purpose of eliminating the heat dissipation of the fan is achieved by large-area contact with the heat transfer surface.

In at least one embodiment of the present invention, the liquid storage and heat dissipation blanket is connected in series to an outlet of a water pump in the liquid cooling heat sink.

In at least one embodiment of the present invention, the first passage is provided with a fluid one-way conduction device, so that the gas or liquid in the gas collection device or the container can only flow out, and the external air cannot enter the gas collection device or the container through the first passage, or the first passage is provided with a switch to control the conduction or the closing of the first passage, the fluid one-way conduction device is, for example, a one-way valve or a pressure relief valve or a check valve, and the switch is, for example, a ball valve, an electromagnet, a torque motor, a gear, and the like, can clamp a pipeline of the first passage or a device for blocking or closing the first passage. The gas-liquid pump can keep the internal pressure of the liquid cooling system to be smaller than the outside without running constantly.

In at least one embodiment of the present invention, a fourth inlet is disposed on the gas collecting device or the container or on the first passage to communicate the outside with the gas pressure in the gas collecting device or the container, the fourth inlet is provided with a pressurized fluid one-way conduction device such as a pressure relief valve or a pressurized one-way valve, the pressurized fluid one-way conduction device enables the outside gas to enter the gas collecting device in a one-way manner when the pressure in the gas collecting device or the container is too low, that is, the pressure difference between the inside and the outside of the gas collecting device is greater than the opening pressure of the pressurized fluid one-way conduction device, and controls the negative pressure in the liquid cooling radiator to be within a preset range, so as to prevent the cold liquid in the liquid cooling radiator from boiling.

In at least one embodiment of the present invention, the control device comprises at least one of a manual type and an automatic type, when the gas-liquid pump is driven by electric energy, the control device is electrically connected to the gas-liquid pump, the manual type comprises a switch such as a contact switch, a self-locking switch, a delay switch and a self-resetting switch, when the gas-liquid pump is driven by high pressure gas, the control device is connected to a pneumatic pipeline connected to the gas-liquid pump, the manual type comprises a gas circuit switch such as a ball valve and a water stop clip, the switch is connected in series in a circuit loop of the gas-liquid pump or arranged on the pneumatic pipeline to control the operation and stop of the gas-liquid pump, and the automatic type comprises a sensor such as a capacitor, a resistor, a voltage, a current sensor, a pressure sensor, a position sensor and a controller such as a solenoid valve, a relay and a contact switch, The controller is connected in series or in parallel in the gas-liquid pump circuit loop or on the pneumatic pipeline, the automatic type is provided with at least one threshold value to judge whether the gas pressure or the volume or the liquid volume or the hydraulic pressure or the liquid level position or the liquid weight in the gas collecting device exceeds the threshold value and enable the gas-liquid pump to be correspondingly turned on or turned off so as to control the gas or cold liquid pressure in the gas collecting device to be smaller than the outside, the threshold value comprises the liquid level height, the weight, the pressure intensity, the volume, the gas volume, the pressure intensity, the resistance, the capacitance, the voltage and the current of the cold liquid or the gas in the gas collecting device, and the control device does not control the rotating speed of the water pump in the liquid cooling system.

In at least one embodiment of the present invention, the control device is provided with a delay device such as a delay switch or a delay module or a capacitor when only one threshold is set, and the delay device is electrically connected to the sensor or the controller, so that the sensor sends out the next signal in a delayed manner or the controller receives the next signal in a delayed manner or controls the gas-liquid pump to stop in a delayed manner, so as to prevent the gas-liquid pump from being damaged due to frequent start and stop.

In at least one embodiment of the present invention, a safety device is disposed at an end of the first passage, the safety device is a container made of a material that prevents leakage of cold liquid, such as silica gel, plastic, or metal, and can store a solution without leakage, and a vent hole is disposed above a liquid level in the safety device and is communicated with other components in the first passage or external atmosphere. By additionally arranging the safety device, the danger that the electric appliance is damaged due to the fact that a large amount of foam is generated by the damage of the liquid cooling system of the cold liquid and then the volume of the cold liquid expands due to the fact that the cold liquid foam and the cold liquid overflow the gas collecting device through the first passage is avoided.

In at least one embodiment of the present invention, the alarm device is electrically connected to the gas-liquid pump or the control device, the alarm device is provided with a sensor, such as a capacitor, a current, a voltage, a resistor, a pressure sensor, or a delay device, such as a delay switch, a delay module, or a preset time value, and an audible and visual alarm device, such as a lamp or a buzzer, the sensor detects that the alarm is turned on when the time interval between the last two starts of the gas-liquid pump is less than the preset time value, or when the total start time of the gas-liquid pump exceeds the preset time value, or when the pressure in the liquid-cooled radiator is greater than a set value. Through setting up the alarm, further remind the user of paying attention to the abnormal working condition of liquid cooling radiator, can help the user to judge simultaneously whether negative pressure structure has become invalid.

A negative pressure liquid cooling radiator is disclosed, which comprises the negative pressure structure.

Discloses a negative pressure monitoring method, in particular to

When there is only one threshold, the method comprises the following steps,

s11, detecting the volume or pressure of gas in the gas collecting device or the volume or liquid level of cold liquid through a sensor, and generating a first signal if the volume or pressure or liquid level does not meet a threshold value;

s12, after the first signal is transmitted to the controller, the controller controls the gas-liquid pump to start corresponding to the first signal;

s13, after the gas-liquid pump is started, the time delay device is started, and the controller receives the next signal in a time delay mode or controls the gas-liquid pump or the sensor to send the next signal in a time delay mode;

after the S14 delay module stops, the sensor detects and sends out signals again, when the threshold value is not met, the sensor sends out a first signal repeatedly, and the controller receives the signals and controls the gas-liquid pump to continue to operate;

s15, sending a second signal by the sensor until a threshold value is met, and receiving the second signal by the controller and controlling the gas-liquid pump to stop;

when a plurality of thresholds are set, the thresholds are sequentially arranged as a 1.2.. n threshold, and the method comprises the following steps:

s21, detecting the volume or pressure of gas in the gas collecting device or the volume or liquid level of cold liquid through a sensor, and if the volume or pressure or the volume or liquid level of cold liquid is not satisfied, generating a 0 th signal;

s22, after the 0 th signal is transmitted to the controller, the controller controls the gas-liquid pump to operate at corresponding preset power corresponding to the 0 th signal;

s23, when the 1 st threshold value is met and the 2 nd threshold value is not met, the sensor sends out a1 st signal, and the controller controls the gas-liquid pump to operate at corresponding preset power corresponding to the 1 st signal;

s24, when the n-1 threshold is met and the n threshold is not met, the sensor sends out an n-1 signal, and the controller controls the gas-liquid pump to operate at corresponding preset power corresponding to the n-1 signal;

and S25, when the nth threshold is met, the sensor sends out an nth signal, the gas-liquid pump operates at corresponding preset power, and when the corresponding power is 0, the gas-liquid pump stops.

The invention has the beneficial effects that: make the inside whole negative pressure that forms of liquid cooling radiator through setting up the gas-liquid pump to solve the weeping problem, through setting up the check valve in order to reduce gas-liquid pump start-up frequency and noise, avoid the interior pressure of liquid cooling radiator to hang down and lead to the fact the cold liquid boiling excessively, solve the cold liquid that arouses because of cold liquid evaporation through setting up the fluid infusion device and lack the problem, the controlling means threshold value and the cold liquid that reduces and mismatch the problem, with the interior local high pressure problem of liquid cooling radiator, as long as when the liquid cooling radiator leaks the gas-liquid pump is greater than the air input of leakage department to the outside displacement, and the liquid cooling radiator still can keep not revealing, just the gas-liquid pump export is equipped with safeties, even cold liquid is by the gas collection device in the overfilling, also can be limited to the safeties in, simultaneously because the long-.

Drawings

FIG. 1 is an example of a preferred liquid-cooled heat sink containing a negative pressure structure.

Fig. 2 shows 4 preferred ways of mounting the control device 12.

Fig. 3 shows two modes of connecting the fluid infusion device 3 in parallel or in series to the liquid cooling radiator.

Fig. 4 is a flow chart of the control device 12 with only one threshold and with a delay module.

Fig. 5 is a flowchart of the control device 12 when a plurality of threshold values are provided.

Fig. 6 shows several configurations of the preferred fluid replacement device 3 housing 100.

Fig. 7 shows several structures of the spring or weight block as the volume varying cavity to generate resilience.

Figure 8 is a block diagram of a preferred pilot tee.

Description of the main reference numerals:

1-gas-liquid pump, 11-fluid one-way conduction device, 12-control device, 2-original liquid cooling radiator, 21-gas collection device/liquid storage device, 211-first outlet, 212-second inlet, 213-third outlet, 22-water pump, 23-other parts of liquid cooling radiator, 24-cold liquid, 25-gas, 3-liquid supplement device, 4-pipeline, 5-safety device, 100-shell, 110-variable volume cavity, 120-piston, 130-piston chamber, 210-spring, 220-counterweight, 230-guy cable, 240-fixed pulley, 710-port 1, 720-port 2, 730-port 3.

Detailed Description

In order to more clearly illustrate the technical solutions of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings or embodiments can be obtained according to the drawings or the embodiments without any inventive step. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of protection of the present invention.

At least one embodiment of the present invention provides an embodiment of a liquid-cooled heat sink including a negative pressure structure, a safety device 5, and a liquid replenishing device 3 as shown in fig. 1, which includes a gas-liquid pump 1, a fluid one-way conducting device 11, a raw liquid-cooled heat sink 2, a gas collecting device/liquid storing device 21, a water pump 22, other components 23 of the liquid-cooled heat sink, a cold liquid 24, and a pipeline 4.

The liquid storage device 21 may be any water tank for a computer water cooling system, as long as the liquid storage device can safely store and transport the cold liquid 24 without leakage, and the structure belongs to the technology that people having ordinary knowledge in the field can understand, and the drawings are not detailed and are not repeated. The water pump 22 can be any water pump for computer water cooling equipment, such as a submersible pump, a dry water pump, or a centrifugal or piston type water pump, in this embodiment, a centrifugal type is taken as an example, and since the structure of the pump element belongs to the technology that can be understood by those having ordinary knowledge in the art, the drawings are not depicted and are not repeated. The cold liquid 24 can be water, alcohols, or other liquids, and preservatives such as glycerin or detergents can be added to the water. The pipeline 4 can be of any structure and material; such as steel pipes, copper pipes or plastic hoses, as long as the transport of the cooling liquid is achieved.

In the gas collecting device 21 in this embodiment, the gas collecting device 21 is replaced by adding the first outlet 211 above the liquid level in the liquid storage device 21 of the original liquid-cooled heat sink 2, the gas-liquid pump 1 and the fluid one-way conduction device 11, such as a one-way valve, both face the gas collecting device 21 and are connected in series with the first outlet 211 to unidirectionally communicate the gas in the gas collecting device 21 with the external atmospheric pressure to form a first passage, and the fluid one-way conduction device 11 enables the gas or the cold liquid in the first passage to flow out of the liquid-cooled heat sink 2 only in one way by pumping of the gas-liquid pump. The third outlet 213 is connected in series with the water pump 22 and other parts 23 of the liquid-cooled radiator through the pipeline 4, so that the cold liquid 24 is pumped by the water pump 22 from the gas collecting device 21 through the third outlet, flows through the other parts 23 of the liquid-cooled radiator, and then returns to the gas collecting device 21 through the second inlet 212 to form circulation, and the connection sequence of the water pump 22 and the other parts 23 of the liquid-cooled radiator is arbitrary.

Preferably, the fluid one-way conduction device 11 may also be replaced by an air circuit switch, where the air circuit switch is turned on after the gas-liquid pump is started, and is turned off before the gas-liquid pump is stopped, so as to achieve the purpose of maintaining the negative pressure inside the liquid-cooled radiator.

Preferably, a safety device 5 can be additionally arranged on the first passage, and the safety device 5 is provided with an inlet and an outlet which are connected in series into the first passage or between the first passage and the external atmospheric pressure. The outlet level is above the liquid level in the safety device 5. By arranging the safety device 5, the phenomenon that after the liquid cooling radiator is damaged, cold liquid generates foam due to air inlet so as to expand the volume of the cold liquid is avoided, and the liquid level in the gas collecting device 21 rises to cause the cold liquid to be pumped out of the liquid cooling radiator by the gas-liquid pump so as to influence external electrical equipment.

Preferably, the installation sequence of the components in the first passage, such as the gas-liquid pump 1, the safety device 5 and the fluid one-way conduction device 11, can be randomly arranged.

Preferably, the third outlet 213 may also be located below the liquid level.

Preferably, a liquid supplementing device 3 can be additionally arranged at a local high-pressure part in the liquid cooling radiator 2, such as an inlet of a water cooling head, so as to avoid the possibility of leakage caused by the local high pressure formed by the overlarge water resistance in a certain component in the liquid cooling radiator, such as the water cooling head, due to the overhigh pumping pressure of a water outlet of a water pump.

Preferably, the fluid infusion device 3 is connected in parallel to the liquid-cooled radiator 2 through a fluid one-way conduction device 11, such as a one-way valve.

Preferably, the fluid infusion device 3 should be communicated with the liquid-cooled radiator at the outlet of the water pump 22 to maximize the reduction of local high-pressure conditions.

Preferably, the water pump 22 may further have an outlet connected to the third outlet 213 to communicate with the liquid storage device/gas collecting device 21, the inlet of the water pump 22 is connected to the outlet of the other component of the liquid-cooled heat sink, and the second inlet 212 needs to be located below the liquid level, in which case the liquid replenishing device 3 may be omitted.

In at least one embodiment of the present invention, the gas-liquid pump 1 is connected to an external circuit at any time and can be started at any time, so as to ensure that the negative pressure is maintained in the liquid-cooled heat sink at any time.

In at least one embodiment of the present invention, a fourth inlet is further disposed above the liquid level of the gas collecting device 21 to communicate with a fluid one-way conducting device 11, such as a pressure relief valve or a pressurized one-way valve, so as to enable outside air to be led into the gas collecting device 21 in a one-way direction under a certain pressure, and when the pressure in the gas collecting device 21 is too low due to long start of the gas-liquid pump 1, the opening pressure of the pressurized one-way valve is overcome to enable outside air to enter the gas collecting device 21, thereby ensuring that the pressure in the gas collecting device 21 is within a certain range to avoid boiling of the cold liquid 24 in the liquid cooling radiator 2 due to too low pressure in the gas collecting device 21.

In at least one embodiment of the present invention, the control device 12 is included, the control device 12 is electrically connected to the gas-liquid pump 1, the control device 12 includes at least one of a manual type and an automatic type, the manual type includes a switch electrically connected to the gas-liquid pump 1, such as a touch switch, a self-locking switch, a time delay switch, and a self-resetting switch, and the on and off of the gas-liquid pump 1 is controlled by manually controlling the on and off of the switch. The automatic type comprises sensors such as a capacitor, a resistor, a voltage, a current sensor, a pressure intensity sensor, a position sensor and a controller such as a relay, a touch switch, a time delay switch, a diode, a triode and a comprehensive control circuit, the automatic type is provided with at least one threshold value to control the start and stop of the gas-liquid pump 1, the sensors detect the gas pressure or the volume or the liquid volume or the hydraulic pressure or the liquid level position or the liquid weight in the gas collecting device 21 and transmit signals to the controller, the controller correspondingly controls the gas-liquid pump 1 to be started or closed according to preset power or preset time after comparing the signals with the threshold value, the purpose of controlling the gas or cold liquid pressure intensity in the gas collecting device 21 to be smaller than the outside is achieved, and the threshold value comprises the liquid level height, the weight, the pressure intensity, the volume, the gas volume, the pressure intensity, the, Resistance, capacitance, voltage, current, etc. of the cold liquid or gas.

Preferably, the control device 12 is installed in a manner as shown in fig. 2, and can be installed on the sidewall of the liquid storage device 21 in a manner of not contacting cold liquid through a non-contact liquid level sensor to detect the liquid level of the cold liquid therein and indirectly determine the pressure inside the liquid cooling radiator, and can be installed at the bottom of the liquid storage device 21 through a pressure sensor to detect the weight of the cold liquid therein and further determine the pressure inside the liquid cooling radiator, and can be installed in the gas collection device 21 and the gas-liquid pump 1 inlet section through a pressure sensor to detect the pressure or the hydraulic pressure to determine the pressure inside the liquid cooling radiator, or through whether a sensor probe such as a resistor, a voltage, a capacitor contacts the cold liquid or not to determine the pressure inside the liquid cooling radiator. And the controller correspondingly controls the gas-liquid pump 1 according to the signal sent by the sensor.

In at least one embodiment of the present invention, a specific negative pressure monitoring method of the control device 12 includes the following steps: when only one threshold value is available, a delay device such as a delay switch or a delay module or a capacitor is further provided, the flow chart of the control device 12 is shown in fig. 3, and the delay device makes the sensor send the next signal in a delayed manner or the controller receive the next signal in a delayed manner or controls the gas-liquid pump 1 to stop in a delayed manner after the gas-liquid pump 1 is started, specifically: s11, detecting the volume or pressure of gas in the gas collecting device or the volume or liquid level of cold liquid through a sensor, and generating a first signal if the volume or pressure or liquid level does not meet a threshold value; s12, after the first signal is transmitted to the controller, the controller controls the gas-liquid pump to start corresponding to the first signal; s13, after the gas-liquid pump is started, the time delay device is started, and the controller receives the next signal in a time delay mode or controls the gas-liquid pump or the sensor to send the next signal in a time delay mode; after the S14 delay module stops, the sensor detects and sends out signals again, when the threshold value is not met, the sensor sends out a first signal repeatedly, and the controller receives the signals and controls the gas-liquid pump to continue to operate; and S15, sending a second signal by the sensor until a threshold value is met, and receiving the second signal by the controller and controlling the gas-liquid pump to stop.

And the gas-liquid pump 1 is automatically controlled to enable the negative pressure in the liquid cooling radiator 2 to be within a certain range. When a plurality of threshold values are set, the flow chart of the control device 12 is as shown in fig. 4, and the gas-liquid pump 1 is started according to the nth preset power or the nth preset time after the controller receives the signal which is sent by the sensor and accords with the nth-1 and does not accord with the nth threshold value, and the method comprises the following steps: s21, detecting the volume or pressure of gas in the gas collecting device or the volume or liquid level of cold liquid through a sensor, and if the volume or pressure or the volume or liquid level of cold liquid is not satisfied, generating a 0 th signal; s22, after the 0 th signal is transmitted to the controller, the controller controls the gas-liquid pump to operate at corresponding preset power corresponding to the 0 th signal; s23, when the 1 st threshold value is met and the 2 nd threshold value is not met, the sensor sends out a1 st signal, and the controller controls the gas-liquid pump to operate at corresponding preset power corresponding to the 1 st signal; s24, when the n-1 threshold is met and the n threshold is not met, the sensor sends out an n-1 signal, and the controller controls the gas-liquid pump to operate at corresponding preset power corresponding to the n-1 signal; and S25, when the nth threshold is met, the sensor sends out an nth signal, the gas-liquid pump operates at corresponding preset power, and when the corresponding power is 0, the gas-liquid pump stops. The grading automatic control of the gas-liquid pump 1 is realized, and the negative pressure in the liquid cooling radiator 2 is accurately and stably controlled to be within a certain range.

In at least one embodiment of the present invention, the alarm device is electrically connected to the gas-liquid pump 1 or the control device 12, the alarm device is provided with a sensor such as a capacitor, a current, a voltage, a resistor, a pressure sensor or a delay device such as a delay switch or a delay module or a preset time value, and an audible and visual alarm device such as a lamp or a buzzer, the sensor at least detects that the alarm is turned on when the interval duration of the last two-time start of the gas-liquid pump is less than the preset time value or the continuous start time exceeds the preset time value or the total duration of the start of the gas-liquid pump 1 exceeds the preset time value or the pressure in the liquid cooling radiator 2 is greater than a certain threshold value, or the control device 12 controls the interval duration of the last two-time start of the gas-liquid pump 1 to be less than the preset time value or the continuous start time exceeds the preset time value or the total duration of the start of the gas-liquid pump 1 And (3) opening an alarm when the time value is reached or the air pressure in the liquid cooling radiator 2 is greater than the threshold value. The preset time value can be adjusted, and a plurality of groups of different preset time values can be provided.

In at least one embodiment of the present invention, the liquid replenishing device 3 is included, the liquid replenishing device 3 is a sealed container such as a bottle, a tank, a bag, a piston cavity which is made of a liquid-tight material such as plastic, glass, rubber, metal and can store cold liquid, and the liquid replenishing device 3 is provided with a liquid outlet, and the cold liquid 24 is input and then connected in series or in parallel into the liquid-cooled heat sink 2, as shown in fig. 5.

In at least one embodiment of the present invention, a pressurized fluid one-way conduction device 11, such as a pressurized one-way valve or a pressure relief valve, is disposed between the liquid outlet of the liquid replenishing device 3 and the liquid cooling radiator 2, so that the cold liquid 24 in the liquid replenishing device 3 can flow into the liquid cooling radiator 2 only when the pressure of the cold liquid 24 in the liquid cooling radiator 2 is lower than the external atmospheric pressure by a preset value. Through setting up fluid one-way device 11 that switches on of area makes inside keeping higher degree negative pressure of liquid cooling radiator 2 increases its damaged mouthful department when liquid cooling radiator 2 is damaged is to the suction of outside air, promotes the security performance.

In at least one embodiment of the present invention, the liquid outlet of the liquid replenishing device 3 is communicated with the liquid cooling radiator 2 through 2 pipelines 4 or connected through a three-way connector, as shown in the two drawings at the right side of fig. 5, a first interface of the three-way connector is connected with the liquid outlet of the liquid replenishing device 3/the liquid cooling radiator 2, a second interface is connected with the liquid cooling radiator 2/the liquid replenishing device 3, the 2 pipelines 4 or the second interface pipeline is provided with an opposite fluid one-way conducting device 11, so that both can be conducted in one direction, the fluid one-way conducting device 11 arranged at the path where the liquid replenishing device 3 is conducted to the liquid cooling radiator 2 is a pressurized fluid one-way conducting device, the liquid cooling radiator 2 is conducted when the pressure in the liquid cooling radiator 2 is lower than the pressure of the liquid replenishing device 3 and reaches a preset pressure difference, so that the cold liquid 24 in the liquid replenishing device 3 flows into the liquid cooling radiator 2, the one-way fluid conduction device 11 which is arranged on one path of the liquid cooling radiator 2 conducted to the liquid supplementing device 3 is not provided with preset pressure, and the forward opening pressure of the one-way fluid conduction device is less than 5kpa, so that the cold liquid 24 in the liquid cooling radiator 2 can flow into the liquid supplementing device 3 through liquid level difference. By arranging the fluid one-way conduction device 11 opposite to the pressurized fluid one-way conduction device 11 in parallel at the position of the pressurized fluid one-way conduction device 11, when the internal pressure of the liquid cooling radiator 2 tends to the outside after being damaged or after the cold liquid 24 is evaporated, the cold liquid 24 can flow back into the liquid supplementing device 3, and the overall safety is improved.

In at least one embodiment of the present invention, as shown in fig. 6, several structures of the casing 100 of the preferred fluid infusion device 3 are shown, including a case where part or all of the casing 100 is the deformable portion 110, a case where part or all of the casing 100 is the piston 120 and the piston chamber 130, and a case where the deformable portion 110, the piston 120 and the piston chamber 130 exist at the same time. The figure shows the variable volume cavity after increasing or decreasing the volume.

In at least one embodiment of the present invention, as shown in fig. 7, the spring 210 or the weight member 220 is preferably used as several structures for increasing potential energy when the volume of the variable volume chamber changes, at this time, the spring 210 can be replaced with other devices for increasing potential energy having two ends with mutual position changes along with the volume change of the variable volume chamber, such as a magnetic pair, a spring plate, an air bag, a piston structure, etc., the two ends of which the mutual positions are changed are respectively arranged at the two ends of the shell 100, which are changed along with the volume change of the variable volume cavity, the balancing weight 220 can be equally replaced by other devices, such as the moving part body, the weight, or the power device or the transmission device, the device is arranged at a mounting point which changes position along with the volume change of the variable volume cavity on the shell 100, and the mounting point does not need to keep the same movement direction with a power device or a gravitational potential energy device and the like through a transmission device such as a guy cable 230 fixed pulley 240.

The liquid supplementing device 3 comprises a shell 100, the shell 100 is partially or completely in a piston 120 and piston chamber 130 structure, the piston 120 and piston chamber 130 structure is in sealing sliding connection, one is a fixing part fixed or integrated in the shell 100, the other is a moving part, the shell 100 is sealed and forms a sealed variable volume chamber 110 through the movement of the moving part, or the shell 100 is a deformable part made of flexible materials such as silica gel, rubber, plastic films and corrugated pipes, the shell 100 is sealed and changes the volume through the deformation of the deformable part to form a sealed variable volume chamber 110, after the volume of the variable volume chamber 110 is reduced, the variable volume chamber 110 is hermetically connected in parallel through a liquid inlet in the liquid cooling radiator 2 or is hermetically connected in series through a liquid inlet and a liquid outlet in the liquid cooling radiator 2 in series through a sealed liquid path in the liquid cooling radiator 2 so that the variable volume chamber 110 is hermetically connected with the liquid cooling 24 in the liquid cooling radiator 2, at least one of a1 or a2 or a3 or a4 is satisfied, so that the hydraulic pressure of the cold liquid 24 in the liquid path from the liquid inlet of the water pump 22 to the parallel point or the serial point in the counter-cold liquid flowing direction in the liquid-cooled radiator 2 is lower than the external atmospheric pressure,

a1, the deformable part is made of elastic material such as silica gel and rubber, and has elastic force, the elastic force is larger than the force required by the volume-variable cavity 110 to recover at least partial volume after the liquid-cooled radiator 2 is damaged,

a2, means for increasing potential energy due to volume reduction of said variable volume chamber being provided in or outside said variable volume chamber, said means generating a force greater than the force required by said variable volume chamber to recover at least part of its volume after breakage of said liquid-cooled heat sink 2,

a3, a power device such as a motor or a pressure pump or an electromagnet is arranged in or outside the variable volume cavity, the power device directly or indirectly acts on a cavity which generates displacement along with the volume change in the variable volume cavity through a transmission device such as a push rod, a pull rope or a pressure transmission device such as a pipeline and a piston, the force acting on the cavity which generates the displacement is larger than the force required by the variable volume cavity for recovering at least partial volume after the liquid-cooled radiator 2 is damaged,

In at least one embodiment of the invention, the housing is provided with at least a framework or a shell outside to reserve a space for accommodating the housing with the increased volume, and the prayer protects the function of the liquid supplementing device.

In at least one embodiment of the present invention, when the fluid infusion apparatus is connected in parallel to the external fluid path through one fluid port, the negative pressure structure is connected in parallel to the external fluid path through a guiding manifold, as shown in fig. 8, the guiding manifold at least includes a first port 710 hermetically communicating an internal first fluid path and a fluid inlet of the external fluid path, a second port 720 hermetically communicating an internal second fluid path and a fluid outlet of the external fluid path, and a third port 730 hermetically communicating an internal third fluid path and a variable volume cavity or a sealed cavity of the negative pressure structure, the internal first fluid path, the internal second fluid path, and the internal third fluid path are located inside the guiding manifold and are communicated with each other, a turning angle of the cold fluid from the internal second fluid path to the internal first fluid path or from the internal first fluid path to the internal second fluid path is greater than 90 degrees, and a turning angle of the cold fluid from the internal third fluid path to the internal second fluid path or from the internal second fluid path to the internal third fluid path is less than 90 degrees, i.e. the cold fluid from the internal first fluid path or the internal second fluid path or the cold fluid enters the internal second fluid path The liquid flows out preferentially from the internal third liquid passage. Through the arrangement of the guide multi-way, cold liquid pumped out by the water pump preferentially enters the liquid supplementing device, so that negative pressure is further kept between the liquid outlet of the liquid supplementing device and the liquid inlet of the water pump.

In at least one embodiment of the present invention, the fluid infusion apparatus 3 includes a housing 100, the housing 100 is sealed to form a sealed cavity, the sealed cavity is provided with at least one air hole to be sealed and communicated with the external atmospheric pressure, the liquid level in the sealed cavity is always lower than the air hole, the sealed cavity is connected in parallel to the liquid-cooled radiator 2 through a liquid port, and is sealed and connected in parallel to the liquid-cooled radiator 2, the liquid port or a pipeline connected to the liquid port in a sealed manner is immersed in the cold fluid 24 at the inner end of the sealed cavity, or the sealed cavity is connected in series to the liquid-cooled radiator 2 through a liquid inlet and a liquid outlet in a sealed manner, and is sealed and connected in series to the liquid-cooled radiator 2, and the liquid outlet or the pipeline.

In at least one embodiment of the present invention, the fluid infusion device 3 includes a fluid storage heat dissipation blanket, the fluid storage heat dissipation blanket is made of a liquid-proof soft film such as rubber, silica gel, polyethylene, polypropylene, and aluminum film, the bag opening is sealed to form a sealing bag, the liquid inlet and outlet pipes are led out and connected in series in the fluid cooling heat sink, the sealing bag is spread on the heat transfer surface such as the ground, the table, and the wall, the cooling fluid is stored in the sealing bag, the purpose of eliminating the heat dissipation of the fan is achieved by contacting the heat transfer surface in a large area, and the spread area of the heat dissipation blanket is larger than 0.2 square meter.

After the scheme is adopted, the negative pressure of the cold liquid in the liquid cooling radiator is kept, so that the cold liquid in the liquid cooling system is prevented from leaking outwards. Local high pressure destruction negative pressure environment in avoiding the liquid cooling radiator through the fluid infusion device, avoid whole negative pressure to hang down through the fluid one-way conduction device of area pressure and cause the cold liquid boiling excessively, still be equipped with alarm device remind the user of service when the negative pressure environment became invalid.

Although the present invention has been described in detail with reference to the foregoing embodiments, other modifications, equivalents, and improvements can be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. A negative pressure structure is characterized in that: the device comprises a manual air extractor such as a needle cylinder, an air extracting cylinder or a gas-liquid pump such as a diaphragm pump, a gear pump or a peristaltic pump, wherein an inlet of the manual air extractor or the gas-liquid pump is communicated with gas in the gas collecting device through a first outlet arranged above the liquid level in the gas collecting device to form a first passage, so that the gas or liquid in the first passage is pumped out of the gas collecting device through the gas-liquid pump, the gas collecting device is a container which is made of a cold liquid leakage preventing material such as silica gel, plastic or metal and can store the solution without leakage, a second inlet and a third outlet are arranged to be connected in series in a liquid path of the liquid cooling radiator, the third outlet is arranged below the liquid level, bubbles in the cold liquid when the cold liquid radiator flows through the gas collecting device float and concentrate on the upper end of the gas collecting device, the gas collecting device can be used as an independent component to be connected in series into the original liquid cooling radiator, and can also be combined with an existing liquid storage device, namely, the first outlet is additionally arranged above the liquid level in the container and communicated with the inlet of the manual air extractor or the gas-liquid pump so that the container replaces a gas collecting device to form a first passage.

2. A negative pressure structure according to claim 1, wherein: the energy required by the gas-liquid pump, such as electric energy and high-pressure gas, can be obtained from the outside of the equipment to be radiated and not only can be obtained by the equipment to be radiated, so that the equipment to be radiated can be powered off as required without influencing the operation of the negative pressure structure to constantly keep the internal pressure of the liquid cooling system to be always smaller than the outside.

And/or the suction lift of the gas-liquid pump is greater than the water pump lift in the liquid cooling system, and the pressure at the water outlet of the water pump in the liquid cooling system is smaller than the outside no matter the water pump is started or stopped.

And/or the second inlet is connected with a water outlet of a water pump in the liquid cooling system, a water inlet of the water pump is connected with the water outlets of other parts in the liquid cooling system, and water inlets of other parts in the liquid cooling system are connected with a third outlet of the gas collecting device or the container.

And/or comprises a liquid supplementing device, wherein the liquid supplementing device is a sealed container such as a bottle, a tank, a bag and a piston cavity made of liquid-tight materials such as plastics, glass, rubber and metal, and is provided with a liquid outlet which is connected in series or in parallel in the liquid-cooled radiator.

3. A negative pressure structure according to claim 2, wherein: the liquid supplementing device is connected in series or in parallel at the outlet of the water pump in the liquid cooling radiator.

And/or the fluid infusion device comprises a shell, the shell is partially or completely of a piston and piston chamber structure, the piston and piston chamber structure are in sealed sliding connection, one of the piston and piston chamber structure is a fixed part or is fixed or integrated in the shell, the other is a moving part, the shell is sealed and forms a sealed variable volume cavity through the movement of the moving part, or the shell is a deformable part made of flexible materials such as silica gel, rubber, plastic films and corrugated pipes, the shell is sealed and changes the volume through the deformation of the deformable part to form a sealed variable volume cavity, after the volume of the variable volume cavity is reduced, the variable volume cavity is hermetically communicated with cold fluid in the liquid cooling radiator through a fluid port and a parallel connection point in the liquid cooling radiator in a sealed liquid path or respectively through a fluid port and a serial connection point in the liquid cooling radiator in a sealed serial connection point in the liquid cooling radiator in a liquid cooling radiator in series connection manner, and at least one of a1, a2, a3 or a4 is satisfied, and the cold fluid The hydraulic pressure of the cooling liquid in the liquid path from the liquid inlet of the fluid pump to the parallel point or the serial point is less than the external atmospheric pressure,

And/or the potential energy increasing device comprises an elastic potential energy device such as a spring and a spring sheet, two ends of the device which change positions mutually are arranged at the other end of the shell and are arranged at the other end of the shell, the other end of the device is arranged at the other shell which is connected with the deformable part in a sealing way, one end of the device is arranged at the shell or the fixed part, the other end of the device is arranged at the moving part, the potential energy increasing device comprises a pressure potential energy device such as a capsule and a piston structure, two ends of the device which change positions mutually are arranged at the other end of the shell and are arranged at the other shell, the other end of the device is arranged at the other shell, the one end of the device is arranged at the shell or the fixed part, the other end of the device is arranged at the moving part, the potential energy increasing device comprises a magnetic potential energy device such as a magnet pair or a magnet And one end of the device is arranged on the shell or the other end of the fixed part is arranged on the moving part, the device for increasing potential energy comprises a gravitational potential energy device such as a balancing weight and a weight, and the device is directly connected with the deformable part or the moving part or indirectly connected with the deformable part or the moving part through a force transmission mechanism such as a lever, a fixed pulley and a rope.

And/or the shell is at least provided with a framework or a shell to reserve a space for accommodating the shell with increased volume.

And/or the fluid infusion device includes the casing, the casing seal forms sealed chamber, sealed chamber is equipped with the sealed external atmospheric pressure of intercommunication of at least one gas pocket, sealed intracavity liquid level is less than all the time the gas pocket, sealed chamber is through the sealed parallelly connected feed liquor cold radiator of a liquid mouth in liquid cooling radiator parallelly connected point, liquid mouth or sealing connection the pipeline of liquid mouth in sealed intracavity end submergence in cold liquid, or sealed chamber is through passing in and out the sealed liquid mouth in the sealed series connection of liquid cooling radiator internal series connection point, liquid outlet or sealing connection the pipeline of liquid outlet submerges in sealed intracavity end in cold liquid.

And/or a pressurized fluid one-way conduction device such as a pressurized one-way valve or a pressure relief valve is arranged between the liquid outlet of the liquid supplementing device and the liquid cooling radiator, so that the cold liquid in the liquid supplementing device can flow into the liquid cooling radiator only after the pressure of the cold liquid in the liquid cooling radiator is lower than the preset value compared with the external atmospheric pressure.

And/or the liquid outlet of the liquid replenishing device is communicated with the liquid cooling radiator through 2 pipelines or is connected through a tee joint connecting piece, the first interface of the tee joint connecting piece is connected with the liquid outlet of the liquid replenishing device/the liquid cooling radiator, the second interface and the third interface are connected with the liquid cooling radiator/the liquid replenishing device, the 2 pipelines or the second interface pipelines are respectively provided with an opposite fluid one-way conduction device so that the pipelines can only be conducted in one way, the fluid one-way conduction device arranged on the way that the liquid replenishing device conducts to the liquid cooling radiator is a pressurized fluid one-way conduction device, the liquid cooling radiator is conducted when the internal pressure of the liquid cooling radiator is lower than the pressure of the liquid replenishing device and reaches the preset pressure difference so that the cold liquid in the liquid replenishing device flows into the liquid cooling radiator, and the fluid one-way conduction device arranged on the way that the liquid cooling radiator conducts to the liquid, the positive opening pressure is less than 5kpa, so that the cold liquid in the liquid cooling radiator can flow into the liquid supplementing device through the liquid level difference.

And/or when the liquid supplementing device is connected in parallel with the external liquid path through a liquid port, the negative pressure structure is connected in parallel with the external liquid path through the guide multi-way, the guiding multi-way at least comprises a first port which is communicated with an internal first liquid path and an external liquid path liquid inlet in a sealing way, a second port which is communicated with an internal second liquid path and an external liquid path liquid outlet in a sealing way, a third port which is communicated with an internal third liquid path and a negative pressure structure internal variable volume cavity or a sealing cavity in a sealing way, inside first fluid passage, inside second fluid passage, inside third fluid passage are located the direction and lead to the inside and link up each other, and cold liquid warp turning angle is greater than 90 degrees when inside second fluid passage to inside first fluid passage or through inside first fluid passage to inside second fluid passage, and cold liquid warp turning angle is less than 90 degrees when inside third fluid passage to inside second fluid passage or through inside second fluid passage to inside third fluid passage and is cold liquid and preferentially flows out from inside third fluid passage when flowing in by inside first fluid passage or inside second fluid passage.

4. A negative pressure structure according to claim 1, wherein: the negative pressure structure includes a stock solution heat dissipation blanket, stock solution heat dissipation blanket is made the bag form like materials such as rubber, silica gel, polyethylene, polypropylene, aluminium membrane by preventing liquid soft film, and the sack seals up and forms the sealing bag, draws out and advances the drain pipe and establish ties in the liquid cooling radiator, heat dissipation blanket area of spreading out is greater than 0.2 square meter, the sealing bag is spread out in the heat transfer face like ground, mesa, wall, and cold liquid is deposited to inside, reaches through the large tracts of land contact heat transfer face and omits the radiating purpose of fan.

And/or the liquid storage heat dissipation blanket is connected in series at the outlet of a water pump in the liquid cooling radiator.

And/or the first passage is provided with a fluid one-way conduction device, so that gas or liquid in the gas collection device or the container can only flow out, and external air cannot enter the gas collection device or the container through the first passage, or the first passage is provided with a switch to control the conduction or the closing of the first passage, the fluid one-way conduction device is a one-way valve or a pressure relief valve or a check valve, and the switch is a ball valve, an electromagnet, a torque motor, a gear and the like, can clamp a pipeline of the first passage or a device for blocking or closing the first passage, so that the gas-liquid pump can keep the internal pressure of the liquid cooling system to be smaller than the outside without running constantly.

5. A negative pressure structure according to claim 1, wherein: the gas collecting device or the container or the first passage is provided with a fourth inlet for communicating the outside with the gas pressure in the gas collecting device or the container, the fourth inlet is provided with a pressurized fluid one-way conduction device such as a pressure relief valve or a pressurized one-way valve, the pressurized fluid one-way conduction device enables the external gas to have too low pressure in the gas collecting device or the container, namely the internal and external pressure difference of the gas collecting device is larger than the opening pressure of the pressurized fluid one-way conduction device and then the external gas can enter the gas collecting device in a one-way mode, the negative pressure in the liquid cooling radiator is controlled to be within a preset range, and the situation that the cold liquid in the liquid cooling radiator has too low boiling point and.

6. A negative pressure structure according to claim 1, wherein: the automatic gas-liquid pump control system comprises a control device, wherein the control device at least comprises one of a manual type and an automatic type, when the gas-liquid pump is driven by electric energy, the control device is electrically connected with the gas-liquid pump, the manual type comprises a switch such as a contact switch, a self-locking switch, a time delay switch and a self-resetting switch, when the gas-liquid pump is driven by high-pressure gas, the control device is connected with a pneumatic pipeline connected with the gas-liquid pump, the manual type comprises a gas circuit switch such as a ball valve and a water stop clamp, the switch is connected in series in a circuit loop of the gas-liquid pump or arranged on the pneumatic pipeline to control the gas-liquid pump to work and stop, and the automatic type comprises a sensor such as a capacitor, a resistor, a voltage, a current sensor, a pressure sensor, a position sensor and a controller such as an electromagnetic valve, a relay, The controller is connected in series or in parallel in a gas-liquid pump circuit loop or on a pneumatic pipeline, the automatic type is provided with at least one threshold value to judge whether gas pressure or volume or liquid volume or hydraulic pressure or liquid level position or liquid weight in the gas collecting device exceeds the threshold value and enable the gas-liquid pump to be correspondingly opened or closed so as to control the pressure of gas or cold liquid in the gas collecting device to be smaller than the outside, the threshold value comprises liquid level height, weight, pressure, volume, gas volume, pressure, resistance, capacitance, voltage and current of the cold liquid or gas in the gas collecting device, and the control device does not control the rotating speed of the water pump in the liquid cooling system.

And/or the control device is provided with a time delay device such as a time delay switch or a time delay module or a capacitor when only one threshold value exists, and the time delay device is electrically connected with the sensor or the controller, so that the sensor sends the next signal in a time delay mode or the controller receives the next signal in a time delay mode or controls the gas-liquid pump to stop in a time delay mode, and damage caused by frequent starting and stopping of the gas-liquid pump is avoided.

7. A negative pressure structure according to claim 1, wherein: the end of the first passage is provided with a safety device which is a container made of a material capable of preventing cold liquid from leaking, such as silica gel, plastic or metal and capable of storing solution without leaking, and a vent hole is arranged above the liquid level in the safety device and communicated with other parts in the first passage or external atmosphere.

8. The negative pressure structure according to claim 1 or 6, wherein: including alarm device with gas-liquid pump or controlling means electric connection, alarm device is equipped with the sensor like electric capacity, electric current, voltage, resistance, pressure sensor or time delay device like time delay switch or time delay module or predetermine the time value, still is equipped with audible and visual alarm devices such as lamp or bee calling organ, the sensor detects at least gas-liquid pump is last two times to start the interval length and is less than when predetermineeing the time value or continuous start time surpass when predetermineeing the time value or in the fixed duration gas-liquid pump starts total length of time surpassing when predetermineeing the time value or open the alarm when liquid cooling radiator internal gas pressure is greater than the set value.

9. A liquid cooling radiator is characterized in that: comprising a negative pressure structure according to claims 1-8.

10. A negative pressure monitoring method is characterized in that:

when there is only one threshold, the method comprises the following steps,

and S25, when the nth threshold is met, the sensor sends an nth signal, the controller controls the gas-liquid pump to operate at corresponding preset power corresponding to the nth signal, and when the corresponding power is 0, the gas-liquid pump stops.