CN201450462U - thermoelectric generator - Google Patents

Abstract

The utility model discloses a thermoelectric generator, including heat absorption vaporizer, impeller power generation facility, condensation liquefaction room, pressure device, regulator, servo control device, liquid level detection device and atomizing device. The heat absorption vaporization chamber, the impeller power generation device, the condensation liquefaction chamber and the pressurizing device are sequentially connected to form a circulation loop, and a working medium with a low boiling point is injected into the circulation loop. The liquid level detecting device detects the liquid level height of the condensing and liquefying chamber, and the servo control device automatically controls the pressure regulating device to work according to the liquid level height information so as to regulate the working pressure in the circulating loop, keep the circulating speed of the working medium constant and further keep the speed of the working medium flowing through the pneumatic impeller constant, thereby achieving the purpose of keeping the output power of the generator stable. Secondly, the atomization device is utilized to accelerate the vaporization capacity of the atomization device, so that the generator can still form cycle power generation even under the condition of low temperature difference, and the application range of the generator is enlarged.

Description

Thermoelectric Generator

technical field

The utility model relates to the technology in the field of energy power generation, in particular to a thermoelectric generator with relatively stable output power and applicable to low-temperature difference power generation.

Background technique

A thermoelectric generator is a device that uses renewable energy to generate electricity. The renewable energy that can be used exists in nature, people's daily life, and all aspects of industrial production (such as: solar energy, waste heat from industrial production, air conditioners, etc.) Or the waste heat generated by the radiator of the car or the exhaust of the engine, the temperature difference energy between the surface and the underground in areas with high temperature difference between day and night, and the temperature difference energy between the polar ice and the ice, etc.). Therefore, with the development of the trend of energy saving and environmental protection, thermoelectric generators have been paid more and more attention by people.

Although there are many types of thermoelectric generators on the market, these existing thermoelectric generators still have many shortcomings in their own structure and performance, including: on the one hand, they can only be used for large temperature differences Power generation under low temperature conditions, but not under low temperature difference conditions, there are certain limitations in the scope of application; on the other hand, they do not have an automatic adjustment function, the output power is easily fluctuated by environmental changes, and the power generation output power is not stable enough, which in turn affects the its work efficiency.

Utility model content

In view of this, the utility model aims at the deficiencies of the existing technology, and its main purpose is to provide a thermoelectric generator, which can convert the flow energy formed by the temperature difference into electric energy for power generation, and has a relatively stable output power.

Another purpose of the utility model is to provide a thermoelectric generator, especially capable of converting the flow energy formed under the condition of low temperature difference into electric energy, which has a wider range of applications.

In order to achieve the above object, the utility model adopts the following technical solutions:

A thermoelectric generator, comprising at least a circulation loop formed by sequentially connecting a heat-absorbing vaporization chamber, an impeller power generation device, a condensation liquefaction chamber and a pressurizing device, a working medium with a low boiling point is injected into the circulation loop, and, in the condensation and liquefaction A liquid level detection device is installed in the chamber, and a pressure regulating device and a servo control device for controlling the operation of the pressure regulating device are connected to the pipeline between the pressurizing device and the heat-absorbing vaporization chamber. The liquid level detection device is connected to The servo control device provides information on the liquid level in the condensate liquefaction chamber required by the servo control device.

Preferably, the inlet end of the heat-absorbing vaporization chamber is further provided with an atomizing device.

Preferably, the atomization device is an atomization pump.

Preferably, the pressure regulating device is a piston type pressure regulating device or a booster pump.

Preferably, the pressurizing device is a pressurizing pump.

Preferably, the working medium is propane, freon or liquid ammonia.

After the utility model adopts the above technical scheme, the beneficial effect is that it mainly detects the liquid level height of the condensation liquefaction chamber through the liquid level detection device, and then the servo control device automatically controls the operation of the pressure regulating device according to the liquid level height information , to adjust the working pressure in the circulation loop, so that the circulating speed of the working medium can be kept constant, and then the speed flowing through the pneumatic impeller can be kept constant. In this way, breaking the routine, the output power can not be fluctuated by the change of the external environment, and the obtained Better stability, so as to achieve the purpose of keeping the output power of the generator stable. Secondly, it installs an atomizing device at the inlet end of the heat-absorbing vaporization chamber, and uses the atomizing device to accelerate its vaporization capacity and speed , so that the generator can still form cycle power generation even under the condition of low temperature difference, which increases the application range of the generator.

In order to more clearly illustrate the structural features and effects of the utility model, the utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments:

Description of drawings

Fig. 1 is a block diagram of the first embodiment of the utility model;

Fig. 2 is the block diagram of the second embodiment of the utility model;

Explanation of the accompanying drawings:

10. Endothermic vaporization chamber

20. Impeller power generation device

30. Condensation and liquefaction chamber

40. Pressure device

50. Pressure regulating device

60. Servo control device

70. Liquid level detection device

80. Atomization device

Detailed ways:

Please refer to shown in Fig. 1, and it is the block structure diagram of the first embodiment of the present utility model, and the generator of this embodiment includes heat-absorbing vaporization chamber 10, impeller power generation device 20, condensation liquefaction chamber 30, pressurization device 40 , a pressure regulating device 50 , a servo control device 60 and a liquid level detection device 70 .

Wherein, the endothermic vaporization chamber 10, the impeller power generation device 20, the condensation liquefaction chamber 30 and the pressurizing device 40 are sequentially connected to form a closed circulation loop, and a working medium with a low boiling point is injected into the circulation loop. Propane, freon or liquid ammonia can be used without limitation.

The circulation principle of the aforementioned circulation loop is described in detail as follows: since the heat-absorbing vaporization chamber 10 is placed in a high-temperature environment for vaporizing the liquid medium to generate high-pressure gas, while the condensation and liquefaction chamber 30 is placed in a relatively low-temperature environment for The gaseous medium is condensed and opened into a low-pressure chamber; therefore, there must be a certain pressure difference between the endothermic vaporization chamber 10 and the condensation liquefaction chamber 30, and the pressure difference can make the high-pressure gas in the endothermic vaporization chamber 10 automatically move towards The condensation and liquefaction chamber 30 flows at a high speed to generate a high-speed air flow. The high-speed air flow is sent into the impeller power generation device 20, and the pneumatic impeller in the impeller power generation device 20 can be driven to rotate to generate power and output power. However, in order to promote the liquid in the condensing liquefaction chamber 30 to flow back into the heat-absorbing vaporization chamber 10 to form a complete circulation loop, the present embodiment is implemented by a pressurizing device 40 connected to the condensing liquefaction chamber 30. Between the outlet end and the inlet end of the heat-absorbing vaporization chamber 10 , the pressure of the pressurizing device 40 is used to push the liquid medium in the condensed liquefaction chamber 30 into the heat-absorbing vaporization chamber 10 to facilitate the next vaporization cycle.

The pressure regulating device 50, the servo control device 60 and the liquid level detection device 70 are used to automatically adjust the speed at which the liquid medium in the condensing liquefaction chamber 30 enters the endothermic vaporization chamber 10, thereby adjusting the vaporization speed of the endothermic vaporization chamber 10 And adjust the speed of gas flowing through the pneumatic impeller in the impeller power generation device 20, and finally achieve the effect of adjusting the output power, so as to obtain a more stable output power. Specifically, the pressure regulating device 50 is connected to the pressurizing device 40 and the suction On the pipeline between the thermal vaporization chambers 10. One end of the servo control device 60 is connected to the pressure regulating device 50, and the other end of the servo control device 60 is connected to the liquid level detection device 70. The liquid level detection device 70 is installed in the condensation liquefaction In the chamber 30, it is used to detect the liquid level height of the condensate liquefaction chamber 30, and then provide the liquid level height information to the servo control device 60, and the servo control device 60 controls the pressure regulating device 50 to work according to the height information, and adjusts accordingly The pressure value in the pipeline between the pressurizing device 40 and the endothermic vaporization chamber 10 is kept constant, so as to realize the function of adjusting the speed of the liquid medium in the condensing liquefaction chamber 30 entering the endothermic vaporization chamber 10.

It should be noted that the aforementioned pressurizing device 40 may be a pressurizing pump, and the pressure regulating device 50 may be a piston type pressure regulating device or a pressurizing pump, etc., without limitation. And, the above-mentioned endothermic vaporization device 10 can obtain heat for vaporization through solar heating, industrial waste heat heating, automobile waste heat heating or geothermal heating as required, and the generator of this embodiment can also be placed in areas with high temperature difference between day and night or polar ice Power generation operations in areas with low temperature differences have a wider range of applications.

Please refer to Fig. 2, which is a block diagram of the second embodiment of the present invention. The difference between this embodiment and the aforementioned first embodiment is that the pressurizing device 40 and the heat-absorbing vaporization chamber An atomizing device 80 is further arranged between 10, and the preferred structure of the atomizing device 80 is an atomizing pump. The atomization device 80 can be used to atomize the liquid medium before being input into the heat-absorbing vaporization chamber 10 to form a mist medium, so that the mist medium input into the heat-absorbing vaporization chamber 10 can be vaporized more easily, thereby accelerating its vaporization speed , and then accelerate the airflow velocity flowing through the pneumatic impeller to increase the output power and obtain better power generation capacity.

The key point of the design of this utility model is that the liquid level of the condensing liquefaction chamber is mainly detected by the liquid level detection device, and then the servo control device automatically controls the work of the pressure regulating device according to the liquid level information to adjust the liquid level in the circulation loop. The working pressure keeps the circulation speed of the working medium constant, and then keeps the speed of the pneumatic impeller constant. In this way, breaking the routine, its output power will not be fluctuated by changes in the external environment, and better stability can be obtained. So as to achieve the purpose of keeping the output power of the generator stable. Secondly, by adding an atomizing device at the inlet end of the heat-absorbing vaporization chamber, the atomizing device can be used to accelerate its vaporization capacity and speed, so that the generator can still be formed even under the condition of low temperature difference Cyclical power generation increases the application range of generators.

The above are only preferred embodiments of the present utility model, and do not limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model , all still belong to the scope of the technical solution of the utility model.

Claims (6)

1. A thermoelectric generator, characterized in that: comprising at least a circulation loop formed by connecting an endothermic vaporization chamber, an impeller power generation unit, a condensation liquefaction chamber and a pressurizing device successively, and injecting a working medium with a low boiling point in the circulation loop, And, a liquid level detection device is arranged in the condensing liquefaction chamber, and a pressure regulating device and a servo control device for controlling the operation of the pressure regulating device are connected on the pipeline between the pressurizing device and the heat-absorbing vaporization chamber. The level detection device is connected to the servo control device to provide the liquid level height information in the condensate liquefaction chamber required by the servo control device. 2. The thermoelectric generator according to claim 1, characterized in that: an atomization device is further provided at the inlet end of the heat-absorbing vaporization chamber. 3. The thermoelectric generator according to claim 2, characterized in that: the atomization device is an atomization pump. 4. The thermoelectric generator according to claim 1, characterized in that: the pressure regulating device is a piston type pressure regulating device or a booster pump. 5. The thermoelectric generator according to claim 1, characterized in that: the pressurizing device is a pressurizing pump. 6. The thermoelectric generator according to claim 1, characterized in that: the working medium is propane, freon or liquid ammonia.

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