Rotary engine

Patent metadata

Field	Value
Publication number	US-11732640-B2
Application number	US-202117628208-A
Country	US
Kind code	B2
Filing date	Mar 2, 2021
Priority date	Feb 4, 2021
Publication date	Aug 22, 2023
Grant date	Aug 22, 2023

Abstract

A rotary engine includes a housing, a crank dual-slider connecting rod mechanism, and rotary casings. The vertically arranged sliding grooves are provided in the housing. The crank dual-slider connecting rod mechanism is mounted on the housing. Sliders of the crank dual-slider connecting rod mechanism are respectively located in the sliding groove. The sliders are driven by a rotation of a crank to periodically compress a gas in the sliding grooves. The two rotary casings configured to rotate synchronously are mounted on an outer side of the housing. Each of the rotary casings is provided with a combustion chamber. Any of the rotary casings is in a transmission connection with a main shaft via a transmission system. The rotary casings drive the main shaft to rotate through a combustion of a compressed gas in the combustion chambers. The rotary engine achieves a good seal.

First claim

What is claimed is:

1. A rotary engine, comprising a housing, a crank dual-slider connecting rod mechanism, and rotary casings, wherein two vertically arranged sliding grooves are provided in the housing, the crank dual-slider connecting rod mechanism is mounted on the housing, sliders of the crank dual-slider connecting rod mechanism are respectively located in the sliding grooves, and the sliders are driven by a rotation of a crank to periodically compress a gas in the sliding grooves; and the two rotary casings configured to rotate synchronously are mounted on an outer side of the housing, and each of the rotary casings is provided with a combustion chamber, any of the rotary casings is in a transmission connection with a main shaft via a transmission system, and the rotary casings drive the main shaft to rotate through a combustion of a compressed gas in the combustion chambers.

2. The rotary engine according to claim 1 , wherein the crank dual-slider connecting rod mechanism comprises a first slider assembly, a second slider assembly, a third connecting rod, a sixth connecting rod, and a connecting piece; the first slider assembly and the second slider assembly are connected by the third connecting rod, and one end of the third connecting rod is provided with a guide groove; and one end of the sixth connecting rod is connected to the guide groove, the other end of the sixth connecting rod is connected to the two rotary casings, respectively, and the sixth connecting rod is driven by a synchronous rotation of the two rotary casings to drive the first slider assembly and the second slider assembly to reciprocate in the sliding grooves, respectively.

3. The rotary engine according to claim 1 , wherein an intake sealing baffle and an exhaust sealing baffle which are movable are respectively provided at two ends of each of the sliding grooves, the intake sealing baffle is connected to the exhaust sealing baffle by a connecting rod, a space between the intake sealing baffle and one end of the sliding groove form an intake chamber, and the intake sealing baffle is driven by the slider in the sliding groove to compress a gas in the intake chamber; and a space between the exhaust sealing baffle and the other end of the sliding groove forms an exhaust chamber.

4. The rotary engine according to claim 1 , wherein a volume of the combustion chamber in each of the rotary casings shrinks along a rotation direction, and a phase angle between the combustion chambers in the two rotary casings is 180°.

5. The rotary engine according to claim 4 , wherein one end of the combustion chamber is a tapering-space large end, the other end of the combustion chamber is a tapering-space small end, and a space between the tapering-space large end and the tapering-space small end shrinks along the rotation direction; a phase angle between the tapering-space large end and the tapering-space small end is 180°; and there is a smooth transition between the tapering-space small end and a wall surface of the rotary casing.

6. The rotary engine according to claim 5 , wherein the combustion chamber further comprises a transition space, a position that the tapering-space large end reaches after tapering by 20° to 30° along the rotation direction is a starting point of the transition space, a phase angle of the transition space does not exceed 5°, and a ratio between cross-sectional areas at the starting point and an end point of the transition space is 5:2; and a ratio between cross-sectional areas at the tapering-space large end and the starting point of the transition space is 5:4.

7. The rotary engine according to claim 3 , further comprising an outlet blocking piece and a first sealing ring, wherein a first hole is provided on the housing at a position near the intake chamber, a first compression spring is mounted in the first hole, one end of the outlet blocking piece is connected to the first compression spring, the first sealing ring is mounted on the other end of the outlet blocking piece, and the first sealing ring is in a sealed contact with a wall surface of the combustion chamber or a wall surface of the rotary casing during rotation of the rotary casing by the first compression spring.

8. The rotary engine according to claim 3 , further comprising a tail blocking piece and a second sealing ring, wherein a second hole is provided on the housing at a position near the exhaust chamber, a second compression spring is mounted in the second hole, one end of the tail blocking piece is connected to the second compression spring, the second sealing ring is mounted on the other end of the tail blocking piece, and the second sealing ring is in a sealed contact with a wall surface of the combustion chamber or a wall surface of the rotary casing during rotation of the rotary casing by the second compression spring.

Assignees

• Univ Jiangsu

Inventors

• Fan Baowei
• Zeng Yonghao
• Wang Yuanguang
• Pan Jianfeng
• Wu Xin
• Qi Xiaolei
• Wang Jiaxin

Classifications

• F02B53/00 Primary

  Internal-combustion aspects of rotary-piston or oscillating-piston engines (internal-combustion aspects of rotary pistons or outer members for co-operation therewith F02B55/00) · CPC title

• F02B55/02

  Pistons · CPC title

• F02B55/08 Primary

  Outer members for co-operation with rotary pistons; Casings · CPC title

• F02B75/40

  Other reciprocating-piston engines · CPC title

• Y02T10/12

  Improving ICE efficiencies · CPC title