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CN-122029347-A - Single-cylinder internal heating type heat engine

CN122029347ACN 122029347 ACN122029347 ACN 122029347ACN-122029347-A

Abstract

The invention relates to a single-cylinder internal heat type hot air engine which comprises a cylinder assembly, a first heat exchanger, a second heat exchanger, a piston and a piston, wherein the cylinder assembly comprises a hot end cylinder body and a cold end cylinder body, the hot end cylinder body and the cold end cylinder body are combined and butted to form a sealed single cylinder body, a heat insulation ring is arranged between the hot end cylinder body and the cold end cylinder body, the first heat exchanger is arranged in the hot end cylinder body and is in fluid communication with an external heat source for heating working gas in the hot end cylinder body, the second heat exchanger is arranged in the cold end cylinder body and is in fluid communication with the external heat source for cooling the working gas in the cold end cylinder body, the piston is arranged in the cylinder assembly and is provided with an air flow channel and an air valve, the air flow channel is used for communicating the working gas in the hot end cylinder body and the cold end cylinder body, the air valve is used for controlling the on-off of the air flow channel, and a piston rod is fixed at one end of the piston, and the other end of the piston is connected with a transmission mechanism positioned outside the cylinder body. The hot air engine cylinder is simple in structure, high-pressure resistant and higher in thermal power.

Inventors

  • FANG SHUFENG

Assignees

  • 房树锋

Dates

Publication Date
20260512
Application Date
20241108
Priority Date
20240304

Claims (7)

  1. A single cylinder internal heat engine comprising: The cylinder body assembly comprises a hot end cylinder body and a cold end cylinder body, wherein the hot end cylinder body and the cold end cylinder body are combined and butted to form a closed single cylinder body, and a heat insulation ring is arranged between the hot end cylinder body and the cold end cylinder body; A first heat exchanger disposed within the hot side cylinder and in fluid communication with an external heat source for heating working gas within the hot side cylinder; a second heat exchanger disposed within the cold end cylinder and in fluid communication with an external cold source for cooling working gas within the cold end cylinder; The piston is a single piston, is arranged in the cylinder body assembly and can perform reciprocating linear motion in the cylinder body, wherein the piston is provided with an airflow channel and a valve, the airflow channel is used for communicating working gas in the hot end cylinder body and the cold end cylinder body, the valve is used for controlling the on-off of the airflow channel, and the valve is used for controlling the on-off of the airflow channel And one end of the piston rod is connected with the piston, and the other end of the piston rod is connected with a transmission mechanism positioned outside the cylinder body assembly.
  2. The single cylinder internal heat type hot air engine as set forth in claim 1, wherein, The valve comprises a valve gate and a valve driving mechanism; The valve flashboard is provided with a through hole, and the piston is provided with an axial vent hole serving as the airflow channel; The valve gate plate and the valve driving mechanism are arranged on the piston, and the valve driving mechanism is used for driving the valve gate plate to rotate so as to align or stagger the through hole and the axial vent hole, namely, the valve is opened or closed.
  3. The single cylinder internal heat engine as set forth in claim 2 wherein said valve actuation mechanism comprises a control rack, a control gear and a pneumatic device, The control gear and the valve gate are coaxially and fixedly arranged on the same shaft sleeve, and the shaft sleeve is rotatably arranged on the piston rod; the pneumatic device is arranged on the piston and is connected with the control rack; The control rack is meshed with the control gear.
  4. The single cylinder internal heat type hot air engine as set forth in claim 1, wherein, The external heat source comprises heating equipment and a first circulating pump, and the first heat exchanger, the first circulating pump and the heating equipment are communicated through corresponding pipelines to form a heat medium circulating loop.
  5. The single cylinder internal heat type hot air engine as set forth in claim 1, wherein, The external cold source comprises refrigeration equipment and a second circulating pump, and the second heat exchanger, the second circulating pump and the refrigeration equipment are communicated through corresponding pipelines to form a cold medium circulation loop.
  6. The single cylinder internal heat type hot air engine as set forth in claim 1, wherein, One end of the cylinder body assembly is provided with a through hole for the piston rod to pass through, and the through hole is matched with the piston rod to seal high-pressure working gas in the cylinder body assembly.
  7. The single cylinder internal heat type hot air engine as set forth in claim 1, wherein, The transmission mechanism comprises a transmission gear and a transmission rack, the transmission rack is fixedly connected with the piston rod, and the transmission gear is meshed with the transmission rack.

Description

Single-cylinder internal heating type heat engine Cross application The present application claims priority from chinese patent application No. 202410242995.6 entitled "a novel single cylinder stirling engine," filed 3/4/2024, the entire contents of which are incorporated herein by reference. Technical Field The invention belongs to the field of engines, and particularly relates to a single-cylinder internal heat type hot air engine. Background The working principle of the thermomotor is as follows: The two cylinder-piston systems are a hot end cylinder and a cold end cylinder, and working medium gases in the two cylinders are communicated through a heat accumulator channel. The gas medium in the cold end cylinder is compressed under the drive of the flywheel, the heat of the cold end gas is dissipated through the cylinder wall, the volume is contracted, and the cold end gas enters the hot end cylinder through the heat accumulator. The hot end cylinder expands under the heating of an external heat source to do work outwards, so that the piston of the hot end cylinder is pushed to move, and the piston moves to drive the connecting rod crankshaft to rotate, and power is output to the outside. After the piston of the hot end cylinder moves to the stopping point, the piston returns to move under the drive of the flywheel, and the gas medium in the cylinder is compressed and conveyed to the cold end cylinder. The gas medium loses heat in the cold end cylinder, the volume is contracted, the piston returns to move, and the gas medium is pressed into the hot end cylinder through the heat accumulator to circulate. Because of the material and strength design of the air cylinder, the heat conduction coefficient of the air cylinder is low, so that the problems of slow external heating conduction and low engine power are caused. The structural form of the cylinder-crankcase makes it inconvenient to install and arrange in the workplace. Disclosure of Invention The invention aims to provide a single-cylinder internal heating type hot air engine so as to solve the problems. For this purpose, the invention adopts the following technical scheme: A single cylinder internal heat engine may include: The cylinder body assembly comprises a hot end cylinder body and a cold end cylinder body, wherein the hot end cylinder body and the cold end cylinder body are combined and butted to form a closed single cylinder body, and a heat insulation ring is arranged between the hot end cylinder body and the cold end cylinder body; the first heat exchanger is arranged in the hot end cylinder body and is in fluid communication with an external heat source, and is used for heating working gas in the hot end cylinder body; A second heat exchanger mounted and arranged in the cold end cylinder and in fluid communication with an external cold source for cooling working gas in the cold end cylinder; The piston is a single piston, is arranged in the cylinder assembly and can perform reciprocating linear motion in the cylinder assembly, wherein the piston is provided with an airflow channel and a valve, the airflow channel is used for communicating working gas in the hot end cylinder and the cold end cylinder, the valve is used for controlling the on-off of the airflow channel, and And one end of the piston rod is connected with the piston, and the other end of the piston rod is connected with a transmission mechanism positioned outside the cylinder body assembly. In one embodiment, the valve comprises a valve gate and a valve driving mechanism, wherein the valve gate is provided with a through hole, the piston is provided with an axial vent hole serving as the airflow channel, the valve gate and the valve driving mechanism are arranged on the piston, and the valve driving mechanism is used for driving the valve gate to rotate so as to align or stagger the through hole of the valve gate and the axial vent hole of the piston, namely, the valve is opened or closed. In one embodiment, the valve driving mechanism comprises a control rack, a control gear and a pneumatic device, wherein the control gear and the valve flashboard are coaxially and fixedly arranged on a shaft sleeve, the shaft sleeve is rotatably arranged on the piston rod, the pneumatic device is arranged on the piston and connected with the control rack, and the control rack is meshed with the control gear to drive the control gear to rotate. In one embodiment, the valve shutter is in the shape of a disc. In one embodiment, the axial vent comprises 2 radially symmetrical circular through holes. In an embodiment, the external heat source comprises a heating device and a first circulating pump, and the first heat exchanger, the first circulating pump and the heating device are communicated through corresponding pipelines to form a heat medium circulating loop. In an embodiment, the external cold source comprises a refrigeration device and a second circulating pump, and the second heat exchange