CN209926645U - Liquid phase-change cooling device driven by jet pump - Google Patents

Abstract

The utility model discloses a liquid phase-change cooling device driven by a jet pump, which comprises an evaporator, a mechanical pump, the jet pump and a condenser; the one end of evaporimeter is connected the mechanical pump, and the other end is connected the jet pump, the jet pump exit linkage condenser steam inlet, the condensate export of condenser with the jet pump liquid outlet is connected respectively the mechanical pump, the evaporimeter periphery sets up the protection heat conduction cover, pass through the pipe connection between evaporimeter, mechanical pump, jet pump, the condenser, the pipeline periphery is provided with the heat preservation. The utility model discloses the utensil is by simple feasible, can be fine compensate advantages such as not enough among the prior art.

Description

Liquid phase-change cooling device driven by jet pump

Technical Field

The utility model belongs to the technical field of the refrigeration, specific jet pump driven liquid phase transition cooling method and device that says so is particularly useful for the cooling to electric and electronic components.

Background

With the development of high-performance military machines and the large-scale application of electronic equipment, the heat load of the whole system is greatly increased, and the installation space of the electronic equipment such as circuit integration, microwave integration and the like is extremely narrow. In this case, the electronic device is installed on a customized cold plate by using phase change refrigeration, and the refrigerant flows in the cold plate to absorb heat and evaporate, so that the working temperature of the electronic device can be controlled within a good temperature range. The power of an aircraft engine is reduced due to the loose structure, the load of the aircraft is reduced, the use space of the aircraft is increased, and the performance of the aircraft can be improved.

The cooling of electrical and electronic equipment today typically employs heat pipe heat transfer cooling, which uses wick-structured capillary pumping to effect fluid transport. One end (evaporation end) of the heat pipe is arranged at the heating part of the component, and the other end (condensation end) of the heat pipe dissipates heat of air. After absorbing the heat of the component, the liquid evaporates at the evaporation end and flows to the condensation end through the pressure difference with the condensation end, and the condensed liquid transfers the fluid to the evaporation end through the capillary pump action of the wick structure in the heat pipe to form a closed cycle. The other is a vapor compression cooling method, liquid refrigerant absorbs heat in an evaporator to be gasified to generate cooling effect and then is sucked by a compressor, vapor is compressed in the compressor to improve vapor pressure and then is conveyed to a condenser to be liquefied, and the liquefied refrigerant enters the evaporator to absorb heat to form a closed cycle.

At high heat fluxes, where the capillary pump is unable to deliver enough liquid to the evaporator, the temperature of the device will rise, causing damage to the device. Again, due to the limitations of capillary pumping, heat pipes are not able to transport fluids over long distances. Finally, the final heat transfer temperature of the heat pipe is greatly influenced by the ambient temperature, and the cooling temperature lower than the ambient temperature cannot be obtained.

The vapor compression cooling method comprises the following steps: the temperature and pressure of the vapor is raised by a compressor, and the vapor is condensed to its liquid state by a condenser and returned to a cooler for further evaporation and cooling. This method has the advantage of a high isothermal heat transfer rate and the ability to move heat a considerable distance. However, this method has some drawbacks that limit its practical application in cooling electrical and electronic devices. First is the power consumption of the compressor. In high heat load applications, the electrical power required by the compressor may be large and exceed the power available for the application. Another problem is that the compressor cannot absorb liquid, and the compressor that has absorbed the liquid may cause physical damage to the compressor and shorten its life by diluting its lubricating oil. In cooling electrical and electronic components, the thermal load may be highly variable, causing unevaporated refrigerant to exit the cooling platen into the compressor. Resulting in a shortened compressor life. Finally, due to the special structure of the compressor, the compressor cannot rotate and work obliquely, and the application of the compressor is limited by the characteristic of the compressor in special occasions (such as radar and antenna which need to rotate and stand upside down during work).

In summary, the prior art has the following disadvantages:

1. the heat transfer temperature is greatly affected by the ambient temperature, and a cooling temperature lower than the ambient temperature cannot be obtained;

2. the service life of the compressor is shortened in a humidity environment, and the compressor is easily limited by the use occasion.

SUMMERY OF THE UTILITY MODEL

In order to solve the deficiencies in the prior art, one of the objectives of the present invention is to provide a liquid phase-change cooling method driven by a jet pump, which can effectively solve the problems existing in the prior art that the heat transfer temperature is affected by the ambient temperature greatly and is limited by the occasion easily.

The utility model provides a technical scheme that its technical problem adopted does:

a liquid phase-change cooling method driven by a jet pump is characterized in that an evaporator is arranged close to a part to be cooled, a mechanical pump conveys a refrigerant to the evaporator, the evaporator absorbs heat from the part to be cooled and evaporates, the jet pump sucks steam, the steam is boosted at the outlet of the jet pump, the steam flowing out of the outlet of the jet pump is condensed by a condenser, and the condensed liquid is circulated to the evaporator by the mechanical pump.

The steam that the evaporimeter absorbed heat and produced is inhaled by the jet pump, and the jet pump has maintained the pressure of evaporimeter tip on the one hand, and on the other hand has improved the steam pressure of its self export, can not receive the ambient temperature influence to send steam to the condenser, and the condensate that the condenser produced gets into mechanical pump, forms a confined circulation, need not the compressor in this process, does not receive the work restriction of compressor and can use in some heat dissipation capacity is big and the power consumption requires little, during operation need rotate, the occasion of handstand.

Another object of the utility model is to provide a jet pump driven liquid phase transition cooling device, the device simple structure is reasonable, can be applicable to in equipment such as electricity, electron very well.

The specific technical scheme is as follows:

a liquid phase-change cooling device driven by a jet pump comprises an evaporator, a mechanical pump, the jet pump and a condenser; mechanical pump is connected to the one end of evaporimeter, and the jet pump is connected to the other end, and jet pump exit linkage condenser steam inlet, the condensate export of condenser and jet pump liquid outlet connect mechanical pump respectively, the evaporimeter periphery sets up the protection heat conduction cover, pass through the pipe connection between evaporimeter, mechanical pump, jet pump, the condenser, the pipeline periphery is provided with the heat preservation, and the protection heat conduction cover both can improve the heat-conduction between evaporimeter and the radiating device of needs, and the protection heat conduction cover is made by heat conduction insulating rubber, the heat preservation is the cotton layer of glass fiber.

When the device is used, elements needing cooling are in contact with the evaporator, the evaporator absorbs heat for evaporation, the steam is sucked by the jet pump, the jet pump can work in the environment with liquid, on one hand, the steam pressure at the end of the evaporator is maintained, on the other hand, the steam pressure at the outlet of the jet pump is improved, so that the steam can enter the condenser, the influence of the ambient temperature is avoided, the cooling effect is achieved, and compared with the prior art, the device is not limited by the work of the compressor and can be used in the occasions with large heat dissipation capacity, small power consumption requirement, rotation and inversion during working.

Furthermore, in order to better separate the steam flowing out of the outlet of the jet pump from a part of liquid, a gas-liquid separator is arranged between the jet pump and the condenser, the steam inlet of the gas-liquid separator is connected with the outlet of the jet pump, the steam outlet of the gas-liquid separator is connected with the condenser, and the liquid outlet of the gas-liquid separator is connected with the mechanical pump.

Furthermore, in order to measure the liquid flow, temperature and pressure between the mechanical pump and the evaporator, a flow sensor, a first temperature sensor and a first pressure sensor are arranged between the mechanical pump and the evaporator.

Further, in order to measure the pressure and temperature between the evaporator and the jet pump, a second pressure sensor and a second temperature sensor are arranged between the evaporator and the jet pump.

Further, in order to measure the temperature and pressure between the gas-liquid separator and the condenser, a third temperature sensor and a third pressure sensor are provided between the gas-liquid separator and the condenser.

Further, in order to balance the flow and the air pressure at the condenser, an axial flow fan is arranged at the condenser.

Further, the evaporator is a plate evaporator. This is the best solution.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model provides a jet pump driven liquid phase transition cooling method, through the steam that is inhaled the evaporimeter evaporation by the jet pump and produces, the pressure of evaporimeter tip has been maintained on the one hand, on the other hand has improved the steam pressure of its self export, can not influenced by ambient temperature and send steam to the condenser, the condensate that the condenser produced gets into mechanical pump, form a confined circulation, need not the compressor in this process, do not receive the work restriction of compressor and can be applied to some heat dissipation capacity and the power consumption requirement is little, the occasion that the during operation need rotate, stand upside down;

2. the utility model provides a jet pump driven liquid phase transition cooling device, the device simple structure is reasonable, can not receive ambient temperature's influence, reaches refrigerated effect, and this set of device compares the work restriction that does not receive the compressor with prior art moreover and can be used in the occasion that some heat dissipation capacity is big and the consumption requirement is little, the during operation needs rotation, handstand.

Drawings

Fig. 1 is a structural view of a jet pump driven liquid phase change cooling device according to an embodiment of the present invention;

in fig. 1, 1-mechanical pump, 2-flow sensor, 3-first pressure sensor, 4-first temperature sensor, 5-second pressure sensor, 6-second temperature sensor, 7-jet pump, 8-gas-liquid separator, 9-third temperature sensor, 10-third pressure sensor, 11-axial fan, 12-condenser, 13-plate evaporator.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Examples

A liquid phase-change cooling method driven by a jet pump is characterized in that an evaporator is arranged close to a part to be cooled, a mechanical pump conveys a refrigerant to the evaporator, the evaporator absorbs heat from the part to be cooled and evaporates, the jet pump sucks steam, the steam is boosted at the outlet of the jet pump, the steam flowing out of the outlet of the jet pump is condensed by a condenser, and the condensed liquid is circulated to the evaporator by the mechanical pump.

As shown in FIG. 1, the device adopted by the jet pump-driven liquid phase-change cooling method comprises a plate evaporator 13, a mechanical pump 1, a jet pump 7 and a condenser 12.

One end of the plate-type evaporator 13 is connected with the mechanical pump 1, the other end of the plate-type evaporator is connected with the jet pump 7, the outlet of the jet pump 7 is connected with the steam inlet of the condenser 12, the condensate outlet of the condenser 12 and the liquid outlet of the jet pump 7 are respectively connected with the mechanical pump 7, and the condenser 12 is provided with the axial flow fan 11.

Set up vapour and liquid separator 8 between jet pump 7 and condenser 12, the 7 exports of jet pump are connected to vapour and liquid separator 8's steam inlet port, and vapour and liquid separator 8's steam outlet connects condenser 12, and 8 liquid outlet of vapour and liquid separator connect mechanical pump 1, 13 peripheries of evaporimeter set up the protection heat conduction cover, pass through the pipe connection between evaporimeter, mechanical pump, jet pump, the condenser, the pipeline periphery is provided with the heat preservation, and the protection heat conduction cover both can improve the heat-conduction between evaporimeter 13 and the radiating device of needs, and the protection heat conduction cover is made by heat conduction insulating rubber, the heat preservation is the cotton layer of glass fiber.

A flow sensor 2, a first temperature sensor 4 and a first pressure sensor 3 are arranged between the mechanical pump 1 and the plate evaporator 13.

A second pressure sensor 5 and a second temperature sensor 6 are provided between the plate evaporator 13 and the jet pump 7.

A third temperature sensor 9 and a third pressure sensor 10 are provided between the gas-liquid separator 8 and the condenser 12.

For the understanding of the utility model, the following description is made in combination with the working principle thereof:

the mechanical pump 1 circulates the condensing agent into a cold plate of the plate evaporator 13, a to-be-cooled element is in contact with the plate evaporator 13, the plate evaporator 13 absorbs heat to evaporate, generated steam is sucked by the jet pump 7, on one hand, the pressure of the cold plate end of the plate evaporator 13 is maintained, on the other hand, the outlet pressure of the jet pump 7 is improved, the steam enters the gas-liquid separator 8, the gas-liquid separator 8 sends liquid into the mechanical pump 1, the steam with small water drops is sent into the condenser 12, and condensed condensate returns to the mechanical pump 1 to form a closed cycle.

Compared with the prior art, the heat transfer temperature is not influenced by the external environment temperature, the compressor is omitted, the working limitation of the compressor is avoided, and the heat exchanger can be used in some occasions with large heat dissipation capacity, low power consumption requirement and the need of rotation and handstand during working.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (7)

1. A liquid phase-change cooling device driven by a jet pump is characterized by comprising an evaporator, a mechanical pump, the jet pump and a condenser; the one end of evaporimeter is connected the mechanical pump, and the other end is connected the jet pump, the jet pump exit linkage condenser steam inlet, the condensate export of condenser with the jet pump liquid outlet is connected respectively the mechanical pump, the evaporimeter periphery sets up the protection heat conduction cover, pass through the pipe connection between evaporimeter, mechanical pump, jet pump, the condenser, the pipeline periphery is provided with the heat preservation.

2. The liquid phase-change cooling device as claimed in claim 1, wherein a gas-liquid separator is arranged between the jet pump and the condenser, a steam inlet of the gas-liquid separator is connected with a jet pump outlet, a steam outlet of the gas-liquid separator is connected with the condenser, and a liquid outlet of the gas-liquid separator is connected with the mechanical pump.

3. The liquid phase change cooling device of claim 2, wherein a third temperature sensor and a third pressure sensor are disposed between the gas-liquid separator and the condenser.

4. The liquid phase change cooling device of claim 1, wherein a flow sensor, a first temperature sensor, and a first pressure sensor are disposed between the mechanical pump and the evaporator.

5. The liquid phase change cooling device of claim 1, wherein a second pressure sensor and a second temperature sensor are disposed between the evaporator and the jet pump.

6. The liquid phase change cooling device of claim 1, wherein an axial fan is disposed at the condenser.

7. A liquid phase change cooling device according to any one of claims 1 to 6 wherein the evaporator is a plate evaporator.

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