WO2015124008A1

WO2015124008A1 - Programmed switch type temperature difference engine

Info

Publication number: WO2015124008A1
Application number: PCT/CN2014/092535
Authority: WO
Inventors: 虞一扬
Original assignee: 虞一扬
Priority date: 2014-02-21
Filing date: 2014-11-28
Publication date: 2015-08-27
Also published as: CN103790635A; CN103790635B

Abstract

A programmed switch type temperature difference engine comprises an ECU (4), a switch type heat exchanger assembly, and a dedicated pneumatic motor. The switch type heat exchanger assembly comprises an air inlet valve (1), a cooler (2), an air exchanging valve (3), a heater (5), and an air outlet vale (6). One end of the heater (5) is connected to an air inlet opening (9) of the dedicated pneumatic motor by means of the air outlet vale (6). One end of the cooler (2) is connected to an air outlet opening (10) of the dedicated pneumatic motor by means of the air inlet valve (1). The heater (5) is connected to the other end of the cooler (2) by means of the air exchanging valve (3). The temperature difference engine converts a temperature difference into an air pressure difference of air, and converts the air pressure difference into power by means of the pneumatic motor, and outputs the power.

Description

Programmable switch type temperature difference engine

[Technical field]

The utility model relates to the technical field of an engine.

[Background technique]

The Stirling engine is a well-known hot air machine and a temperature difference engine, which has the advantages of high efficiency and low pollution. However, the Stirling engine also has a large defect. It adopts the design of the heating cylinder and the cooling cylinder. The cylinder itself is a heat exchanger. The limited surface area of the cylinder limits its heat exchange capacity, so it is difficult to make high power. The machine, currently known to have a maximum power of less than 200Kw. In short, the defects of the Stirling engine itself limit its scope of use, and the research on the Stirling engine is extremely enthusiastic, and there are few application cases.

[utility content]

The utility model proposes a temperature difference engine, which also uses air as a working medium, uses a temperature difference between a heater and a cooler to generate a gas pressure difference and converts it into power, and uses a program-controlled switch for control, which can precisely control the working medium. Flow, so that the working fluid is directed to flow at the right time to achieve work. The engine designed according to the utility model not only has high theoretical efficiency, but also can generate high-power output, has a wider range of use, has no special requirements for use, and is extremely simple to manufacture.

The technical scheme of the utility model is: a program-controlled switch type temperature difference engine, comprising an ECU, a switch type heat exchange device combination, a special air motor, and the switch type heat exchange device combination comprises an intake valve, a cooler, a ventilation valve The heater, the exhaust valve, and one end of the heater are connected to the air inlet of the special air motor through the air outlet door, and one end of the cooler is connected to the air outlet of the special qigong motor through the intake valve, and is heated. The other end of the cooler and the cooler are connected together by a gas exchange valve.

The intake valve, the exhaust valve and the gas exchange valve in the switch heat exchange device combination are solenoid valves and are controlled by the ECU.

One type of the special air motor is a piston type air motor, which includes a cylinder, a piston, a piston pin, a connecting rod, a crankshaft, a cylinder head, an air inlet and an air outlet provided on the cylinder head, and the cylinder head is mounted thereon. The switch type heat exchange device is combined, the air inlet provided on the cylinder head is connected with the outlet valve of the switch type heat exchange device, and the air outlet provided on the cylinder head is connected with the intake valve combined with the switch type heat exchange device. There are at least two sets of switch heat exchanger combinations installed on each piston air motor.

The piston type air motor device has a piston position sensor, and the signal is sent to the ECU for processing.

The piston type air motor can be installed with a pressure sensor, and the signal is sent to the ECU for processing.

The heater and the cooler in the combination of the switching heat exchange device can be equipped with a gas pressure sensor, and the signal is sent to the ECU for processing.

The heater and cooler, the volume of the cooler is proportional to the volume of the heater, the ratio of which is determined according to the expected high pressure and low pressure.

The ECU divides the switch heat exchange device into an active state and a ready state. At the same time, only one set of switch heat exchange devices is in an active state, and the remaining sets of switch heat exchange devices are in a ready state.

When the combination of the switch-type heat exchange device is in a ready state, the intake valve, the exhaust valve, and the ventilation valve in the device are all in a closed state.

When the switch-type heat exchange device combination is in the working state, the ECU controls the switch according to the position of the piston. When the piston is at the top dead center (the cylinder volume is the smallest at the moment), the ECU opens the switch-type heat exchange device that enters the working state. The valve, the high temperature and high pressure gas in the heater enters the cylinder, pushing the piston down; when the piston travels to the bottom dead center (the cylinder volume is the largest at the moment), the outlet of the switch heat exchange device is closed, the intake valve is opened, and the ventilation valve is opened. The piston moves from the bottom dead center to the upper dead center, and the air in the cylinder is pushed into the cooler through the intake valve combined by the switch heat exchange device, and the air in the cooler is pushed into the heater through the gas exchange valve. When the piston reaches the top dead center again, the intake valve is closed, the ventilation valve is closed, the combination of the switch-type heat exchange device ends the working state, and the ECU selects another switch-type heat exchange device to enter the working state and repeats the above. process.

The heater includes at least one hollow conduit for gas circulation and heating.

The cooler includes at least one hollow conduit for gas to circulate and cool.

The program-controlled switch type temperature difference engine must be equipped with a flywheel when the single cylinder is used alone, and the inertia of the flywheel can be used to continuously operate the engine; when used for multiple cylinders or multiple engines, the flywheel can be installed without using the multi-cylinder The cooperation between the strokes enables continuous operation.

The switch-type heat exchange device combination alternately enters an active state, and the others are in a ready state.

An air inlet is installed on the cooler in the switch heat exchanger assembly for supplementing the gas.

The beneficial effects of the utility model

The novel engine proposed by the utility model can convert the gas pressure difference change caused by the temperature difference into power, which will profoundly change the energy utilization mode. Since the temperature difference is ubiquitous and can be artificially manufactured, the application range is extremely wide. For example, in the field of solar power generation, solar power generation can be greatly reduced. The utility model can be applied to high-temperature exhaust gas power generation of an internal combustion engine to improve the efficiency of automobile fuel utilization, and can generate power or electric power by using industrial waste heat to achieve the purpose of energy saving and energy recovery, and the like. The utility model will play a huge role in the development of renewable energy to replace traditional energy, improve energy efficiency and reduce energy consumption. It will make a great contribution to energy conservation, environmental protection and industrial transformation and upgrading, and will promote a green industry. The arrival of the civilized era.

[Description of the Drawings]

1 is a schematic view showing the overall structure of the programmable switch type temperature difference engine;

2 is a schematic structural view of a combination of the switch heat exchange device of FIG. 1;

Figure 3 is a cross-sectional view showing the structure of the special air motor of Figure 1 - a piston type air motor;

In the figure, the intake valve in the combination of the switch type heat exchange device, the radiator in the combination of the switch type heat exchange device, the valve in the combination of the switch type heat exchange device, the 4. ECU, and the 5. switch Heat exchanger in the heat exchanger unit combination, 6. Outlet valve in the combination of the switch heat exchange unit, 7. Piston air motor for the special air motor, 8. Piston air motor piston, 9. Piston air motor Air inlet, 10. Air outlet of piston air motor, 11. Air pressure sensor of piston air motor, 12. Piston pin of piston air motor, 13. Connecting rod of piston air motor, 14. Piston air motor The crankshaft.

[detailed description]

Embodiment 1: Referring to FIG. 1 to FIG. 3, a program-controlled switch type temperature difference engine includes an ECU, a switch type heat exchange device combination, a special air motor, and the switch type heat exchange device combination includes an intake valve and a cooler. Venting valve, heater, and exhaust valve, one end of the heater passes through the exhaust valve and the special air motor The air inlet is connected, one end of the cooler is connected to the air outlet of the special qigong motor through the intake valve, and the other end of the heater and the cooler are connected through the gas exchange valve.

When the switch-type heat exchange device combination is in an operating state, the ECU controls the switch according to the position of the piston. When the piston is at the top dead center, the ECU opens the outlet valve of the switch-type heat exchange device that enters the working state, and the heater The high temperature and high pressure gas enters the cylinder to push the piston down; when the piston travels to the bottom dead center, the outlet of the switch heat exchange device is closed, the intake valve is opened, the ventilation valve is opened, and the piston moves from the bottom dead center to the top dead center, and the cylinder is moved. The air inside is pushed into the cooler via the intake valve combined by the switch heat exchange device, and the air in the cooler is pushed into the heater through the gas exchange valve. When the piston reaches the top dead center again, the intake valve is closed, the ventilation valve is closed, the combination of the switch-type heat exchange device ends the working state, and the ECU selects another switch-type heat exchange device to enter the working state and repeats the above. process.

The cooler includes at least one hollow conduit for gas to circulate and cool.

The special air motor used in this solution requires two processes of compression and expansion, so many air motors commonly used in the market cannot be used in this solution, such as a turbo air motor. Piston air motors are preferred because of their clear expansion and compression processes.

Taking a piston air motor as an example, the working process of the programmable switch type temperature difference engine: due to the switch The heat exchange unit combination includes a heater and a cooler. In the standby state, the heater and the cooler are isolated, the gas in the heater is increased in pressure due to heating, and the gas in the cooler is lowered in pressure due to cooling. In the work state, when the piston is at the top dead center and the volume is the smallest, the ECU controls to open the outlet valve of the combination of the switch heat exchange device, and the high pressure gas in the heater enters the cylinder to push the piston down, which is the expansion process, and the gas pressure is here. During the process, the piston movement is converted into a power output; when the piston descends to the bottom dead center, most of the gas of the heater has entered the cylinder, and the ECU closes the outlet of the switch heat exchange device, and the intake valve opens. The gas exchange valve is opened, and the piston is lifted under the inertia of the flywheel or the power of other cylinders, which is a compression process. Since the gas pressure of the cooler is low, only a small force is required to propel the gas in the cylinder to the cooler, and the gas originally in the cooler is pushed into the heater. When the piston is ascended to the top dead center, the outlet valve is closed, the gas exchange valve is closed, the set of switching heat exchange devices are put into a ready state, and the other group of switch heat exchange devices are combined into the working phase, and the above process is repeated.

It can be seen from the above that the use of a piston air motor requires at least two sets of switch heat exchanger combinations to be installed in turn. If more switch-type heat exchanger combinations are installed, each group can have more time for heat exchange and therefore higher efficiency.

Obviously, the power source of the programmable switch-type temperature difference engine is the pressure difference between the gas in the heater and the gas in the cooler. The larger the difference, the larger the power output, so it is very important to design a reasonable pressure difference. This difference is related to the temperature difference between the heater and the cooler, and also to the volume of the heater and the cooler. The temperature difference is mainly determined by the external environment, such as the temperature difference that can be achieved in engine exhaust gas recovery, which is better than the boiler exhaust gas recovery. The temperature difference that can be reached is large; another way is to design the volume of the cooler to be larger than the volume of the heater, to make the air pressure in the heater higher, and the air pressure in the cooler is lower, so that the pressure difference is larger, reaching Increase the power output, but also consider the volume of the heater and cylinder There is an upper limit to the ratio.

For better results, it is also a method to install a pressure sensor in the heater and cooler, which allows the ECU to adopt a more flexible control method for higher efficiency. In addition, considering the loss of gas working fluid during the working process, it is necessary to set a gas filling port to replenish the lost gas, and the gas filling port will be placed on the cooler because the air pressure of the cooler is lower and the installation is more easily.

Claims

A program-controlled switch type temperature difference engine, comprising an ECU, a switch type heat exchange device combination, and a special air motor, wherein: the switch type heat exchange device combination comprises an intake valve, a cooler, a gas exchange valve, a heater, At the outlet valve, one end of the heater is connected to the outlet valve, one end of the cooler is connected to the intake valve, and the other end of the heater and the cooler is connected by a gas exchange valve.
The programmable switch type temperature difference engine according to claim 1, wherein the intake valve, the exhaust valve and the gas exchange valve in the combination of the switch heat exchange device are solenoid valves, and are controlled by the ECU.
A programmable switch type temperature difference engine according to claim 1, wherein said special air motor is a piston type air motor comprising a cylinder, a piston, a piston pin, a connecting rod, a crankshaft, a cylinder head, and a cylinder head. The upper air inlet and the air outlet are characterized in that: a combination of a switch type heat exchange device is mounted on the cylinder head, and an air inlet connected to the cylinder head is connected with an outlet valve of the switch type heat exchange device, and is disposed on the cylinder head The upper air outlet is connected to the intake valve combined with the switch heat exchange device. There are at least two sets of switch heat exchanger combinations installed on each piston air motor.
A programmable switch type temperature difference engine according to claims 1 and 3, wherein said piston type air motor device has a piston position sensor, and the signal is sent to the ECU for processing.
The programmable switch type temperature difference engine according to claim 1, wherein the heater and the cooler in the combination of the switch type heat exchange device are provided with a gas pressure sensor, and the signal is sent to the ECU for processing.
The programmable variable temperature differential engine of claim 1 wherein said heater and cooler, the volume of the cooler is proportional to the volume of the heater, the ratio of which is determined based on the expected high pressure and low pressure.
The programmable switch type temperature difference engine according to claim 1, wherein the ECU divides the switch type heat exchange device into a working state and a ready state, and at the same time, only one switch type heat exchange device combination is in a working state, and the rest Several sets of switching heat exchanger combinations are in a ready state.
The programmable switch type temperature difference engine according to claim 1, wherein the intake valve, the exhaust valve and the ventilation valve in the device are in a closed state when the switch heat exchange device combination is in a ready state. .
The programmable switch type temperature difference engine according to any one of claims 1, 3 and 7, wherein when the switch type heat exchange device combination is in an operating state, the ECU controls the switch according to the position of the piston when the piston is at the top dead center. The ECU opens the outlet valve of the switch-type heat exchange device that enters the working state, so that the high-temperature and high-pressure gas in the heater enters the cylinder to push the piston down; when the piston travels to the bottom dead center, the outlet of the switch-type heat exchange device is closed, The intake valve is opened, the gas exchange valve is opened, and the piston moves from the bottom dead center to the upper dead center, and the air in the cylinder is pushed into the cooler through the intake valve combined by the switch heat exchange device, and the air in the cooler is ventilated. The door is pushed into the heater. When the piston reaches the top dead center again, the intake valve is closed, the ventilation valve is closed, the combination of the switch-type heat exchange device ends the working state, and the ECU selects another switch-type heat exchange device to enter the working state and repeats the above. process.
A programmable switch type temperature difference engine according to claim 1, wherein said cooler in said switch heat exchanger assembly is provided with an air inlet for replenishing gas.
The programmable switch type temperature difference engine of claim 1 wherein said heater in said switch heat exchanger assembly comprises at least one hollow conduit for gas circulation and heating.
The programmable variable temperature differential engine of claim 1 wherein said cooler in said switch heat exchanger assembly comprises at least one hollow conduit for gas to circulate and cool.