CN103485997A - Solar driven bubble pump device - Google Patents

Abstract

The invention relates to a bubble pump driven by solar energy, comprising a vertical riser, a bubble generator, a gas-liquid separator, a heat exchange device, and a solar heat collector. The upper part of the bubble generator is connected with the gas-liquid separator through a vertical riser pipe. A heat exchange device is installed inside the bubble generator to exchange heat with an external heat source and heat the liquid in the bubble generator. The heat exchange device communicates with the solar collector through the pipeline. Heater connection. The heat collected by the solar collector is transferred to the liquid in the bubble generator through the heat exchange device, the liquid is heated and boiled to form bubbles, and the bubbles rise into the vertical riser to push the liquid up. Solar collectors are installed in places with good sunlight resources, which can make full use of solar energy. The heat exchange device is installed at the bottom of the bubble generator to heat the liquid evenly to form bubbles. The invention has a simple and compact structure, fully utilizes solar energy resources, expands the utilization range of heat sources, is low in cost, and has strong energy-saving and practicality.

Description

Bubble pump unit powered by solar energy

technical field

The invention relates to an air bubble pump, in particular to an air bubble pump driven by solar energy.

Background technique

With the continuous improvement of people's awareness of energy conservation and environmental protection, the widely used vapor compression refrigeration and air-conditioning systems not only use high-grade electric energy, but also commonly used chlorofluorocarbon refrigerants cause greenhouse effects due to damage to the ozone layer. issue has drawn much attention. In order to achieve the healthy and sustainable development of the refrigeration and air-conditioning industry and the requirements of energy conservation and emission reduction, the International Institute of Refrigeration F. BILLIARD believes that it is necessary to increase the research and development of non-vapor compression systems, so the development of a relatively energy-saving and environmentally friendly refrigeration technology has become the research content of most scholars, and absorption refrigeration technology has shown its unique advantages in this regard. Conventional absorption refrigeration units have large cooling capacity, large floor space, and high investment costs. They are generally used in large-scale building air conditioning and are not suitable for miniaturization of refrigeration devices. With the improvement of people's material living standards, the market prospect of various household refrigeration devices, especially a class of small refrigerators represented by villa-type central air-conditioning systems, is very broad. The Einstein cycle refrigerator has a small cooling capacity, no moving parts, and low noise. It can use low-grade heat sources through the bubble pump device, and is especially suitable for miniaturized refrigeration systems. The bubble pump is the key core component to realize the normal operation of the Einstein cycle and the absorption refrigeration cycle, and provides the power source of the refrigeration cycle. Its performance research is of great significance for improving the performance of the Einstein cycle refrigerator and realizing the miniaturization of the absorption refrigeration unit

The main shortcomings and problems of the bubble pump at this stage:

1. Most of the current practical air bubble pump devices use electric heating, which increases the demand for electricity and causes a certain degree of energy waste.

2. The bubble pump is greatly affected by the grade of the heat source and the heating heat, the working performance fluctuates greatly, and the stability is poor. When running under an unstable heat source, the amount of liquid lifted by the bubble pump is not guaranteed.

To sum up, in view of the shortcomings and problems of the bubble pump at this stage, it is urgent to develop a bubble pump device that can use low-grade heat sources, expand the use range of heat sources, reduce electricity demand, save energy, and operate efficiently and stably.

Contents of the invention

The present invention aims to solve the existing problems of the existing air bubble pumps in the process of using heat sources, and provides a solar energy-driven air bubble pump device, which uses a solar heat collector device to send heat to into the heat exchange device, and then passed to the solution in the bubble generator, the solution is heated and boiled to form bubbles, and then form a gas-liquid two-phase flow, the bubbles rise into the vertical riser and push the liquid in front to rise, driven by the pressure difference, The gas-liquid two-phase flow is lifted into a gas-liquid separator.

In order to achieve the above object, the technical solution of the present invention is: a kind of bubble pump driven by solar energy, comprising a vertical riser, a bubble generator, a gas-liquid separator, a heat exchange device, and a solar heat collector, characterized in that: The upper part of the generator is connected with the gas-liquid separator through a vertical riser pipe. A heat exchange device is installed inside the bubble generator to exchange heat with an external heat source and heat the liquid in the bubble generator. The heat exchange device is connected to the solar heat collector through the pipeline device connection.

A replenishment tank for balancing the flow of working fluid in the pipeline is added on the pipeline connecting the heat exchange device and the solar collector. The upper part of the gas-liquid separator 7 is provided with a steam outlet, and the bottom of the gas-liquid separator 7 is provided with a liquid outlet. There is also a liquid supply port at the bottom of the bubble generator. The heat exchange device is installed at the inner bottom of the bubble generator. There is an insulation layer outside the pipeline.

The beneficial effects of the present invention are:

In the solar-driven air bubble pump of the present invention, the liquid in the air bubble generator can obtain enough heat to boil, and the air bubbles can form a stable slug flow in the riser, which increases the lifting efficiency of the liquid. It is because in the bubble generator, the heat from the solar energy heats the liquid through the heat exchange device to generate bubbles uniformly. Due to the fast formation rate of the bubbles, they accumulate continuously during the rising process. When the accumulation reaches a certain level, the bubbles escape. The speed is balanced with the speed of bubble production, resulting in a steady rise of bubbles. At the same time, because the heat from the solar energy heats the liquid in the generator smoothly and evenly through the heat exchange device, the fluctuation of bubble formation is reduced, the stability and reliability of the lifting efficiency are ensured, and the lifting amount is improved to a certain extent.

The solar collector device absorbs solar energy, and then the working fluid in the pipeline is transferred to the heat exchanger, and then transferred to the liquid in the bubble generator through the heat exchange device, and the liquid is heated and boiled to form bubbles. The solar collector is installed in a place with good sunlight resources to ensure the temperature that the working medium in the pipeline can reach. The heat exchange device is installed at the bottom of the bubble generator to heat the liquid evenly to form bubbles.

The device has a simple and compact structure, makes full use of solar energy resources, expands the utilization range of heat sources, reduces the consumption of high-grade electric energy, has outstanding energy-saving performance, low cost and strong practicability.

Description of drawings

Fig. 1 is a schematic structural view of the air bubble pump device driven by solar energy of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but this embodiment is not intended to limit the present invention, and all similar structures and similar changes of the present invention should be included in the protection scope of the present invention.

As shown in Figure 1, the air bubble pump device driven by solar energy of the present invention includes a vertical riser 1, a bubble generator 4, a gas-liquid separator 7, a heat exchange device 2, a liquid replenishment tank 8, and a solar heat collector 9.

The gas-liquid separator 7 is connected to the upper part of the bubble generator 4 through the vertical riser 1 to form a connecting passage. A heat exchange device 2 is installed in the bubble generator 4, and the heat exchange device 2 is connected to the solar heat collector 9 through a pipeline and heats the liquid in the bubble generator 4 to generate bubbles. The bubble-liquid two-phase flow flows through the vertical riser 1 under the push of pressure, and rises to the gas-liquid separator 7. The gas part is discharged from the upper steam outlet 6 of the gas-liquid separator 7, and the liquid is discharged from the bottom of the gas-liquid separator 7. Liquid port 5 discharges. The pipeline connecting the heat exchange device 2 and the solar heat collector is additionally provided with a replenishment tank 8 for balancing the flow rate of the working medium in the pipeline. A liquid supply port 3 is also provided at the bottom of the bubble generator 4 . There is an insulation layer outside the pipeline. The heat exchange device 2 is installed at the inner bottom of the bubble generator 4 . The solar heat collector device 9 is installed in a place with sufficient sunlight, which is convenient for ensuring the temperature of the working medium in the pipeline. The heat exchange device 2 installed at the inner bottom of the bubble generator 4 functions to heat the liquid in the bubble generator 4 uniformly and stably. It can be fully combined with external low-grade heat sources such as factory waste heat and electric heating.

In the single-pressure absorption refrigeration system, the dilute ammonia solution flows into the bubble generator 4 through the liquid supply port 3 at the bottom of the bubble generator 4 . After the dilute ammonia solution is heated by the heat exchange device 2 installed in the bubble generator 4, the solution is heated and boils to generate bubbles, and the generated bubbles enter the vertical riser 1, and the gas-liquid two-phase flow enters the gas-liquid two-phase flow under the push of pressure. In the separator 7, the liquid will gather in the lower part of the gas-liquid separator 7 due to its high density and be discharged through the liquid outlet 5; the gas will gather in the upper part of the gas-liquid separator 7 and be discharged through the steam outlet 6.

Claims (6)

1. A bubble pump driven by solar energy, comprising a vertical riser (1), a bubble generator (4), a gas-liquid separator (7), a heat exchange device (2), and a solar heat collector (9), It is characterized in that: the upper part of the bubble generator (4) communicates with the gas-liquid separator (7) through the vertical riser (1), and the bubble generator (4) is equipped with a device for heat exchange with an external heat source and for heating the bubbles. A heat exchange device (2) for the liquid in the generator, and the heat exchange device (2) is connected to the solar heat collector (9) through a pipeline. 2. The air bubble pump driven by solar energy according to claim 1, characterized in that: on the pipeline connected between the heat exchange device (2) and the solar collector (9), there is an additional device for balancing the flow of working fluid in the pipeline rehydration tank (8). 3. The bubble pump driven by solar energy according to claim 1, characterized in that: the upper part of the gas-liquid separator (7) is provided with a steam outlet (6), and the bottom of the gas-liquid separator (7) is provided with an outlet Liquid port (5). 4. The bubble pump driven by solar energy according to claim 1, characterized in that: the bottom of the bubble generator (4) is also provided with a liquid supply port (3). 5. The air bubble pump driven by solar energy according to claim 1, characterized in that: the heat exchange device (2) is installed at the inner bottom of the air bubble generator (4). 6. The air bubble pump driven by solar energy according to claim 1 or 2, characterized in that: the pipeline is provided with an insulation layer.

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