CN110397517B - Stirling engine device - Google Patents
Stirling engine device Download PDFInfo
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- CN110397517B CN110397517B CN201910586803.2A CN201910586803A CN110397517B CN 110397517 B CN110397517 B CN 110397517B CN 201910586803 A CN201910586803 A CN 201910586803A CN 110397517 B CN110397517 B CN 110397517B
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- 230000007246 mechanism Effects 0.000 claims description 34
- 230000005540 biological transmission Effects 0.000 claims description 13
- 241000309551 Arthraxon hispidus Species 0.000 claims description 10
- 230000033001 locomotion Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims 4
- 238000010168 coupling process Methods 0.000 claims 4
- 238000005859 coupling reaction Methods 0.000 claims 4
- 230000009471 action Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 44
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 14
- 238000007789 sealing Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G1/00—Hot gas positive-displacement engine plants
- F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
- F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
- F02G1/044—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines having at least two working members, e.g. pistons, delivering power output
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G1/00—Hot gas positive-displacement engine plants
- F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
- F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
- F02G1/053—Component parts or details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G1/00—Hot gas positive-displacement engine plants
- F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
- F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
- F02G1/053—Component parts or details
- F02G1/055—Heaters or coolers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transmission Devices (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention relates to the technical field of engines, in particular to a Stirling engine device. The stirling engine device includes: the device comprises an active cylinder, a passive cylinder and a heater. The Stirling engine device provided by the invention adopts a double-cylinder action mode, the heater heats gas in a hot cavity of the driving cylinder, cold gas in a cold cavity flows into the hot cavity, and pushes the first piston to move towards the first rotating wheel to drive the first rotating wheel to rotate; and the gas in the cold chamber enters the gas inlet chamber of the driven cylinder to push the second piston to move towards the second rotating wheel and drive the second rotating wheel to rotate until the second piston reaches a left dead point. The first piston and the second piston move in opposite directions due to inertia of the first rotating wheel, the second rotating wheel, the rotating shaft and other components, the driving cylinder sucks external gas through the first inlet valve, and the driven cylinder exhausts gas through the gas outlet to complete a working cycle. The cold cavity and the hot cavity of the driving cylinder always have temperature difference, so that the Stirling engine device can continuously run.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a Stirling engine device.
Background
The stirling engine outputs power through a cycle of cooling, compression, heat absorption and expansion of a working medium (hydrogen or helium) in a cylinder, and is also called a heat engine. The stirling engine is an external combustion engine, and its effective efficiency is generally intermediate between that of gasoline engines and diesel engines. In China and abroad, the Stirling engine is mature and applied to a submarine, and is not commonly applied to a civil automobile like an internal combustion engine. In foreign countries, few countries such as the united states, brazil and uk have begun to produce small quantities of stirling ethanol engines for automobiles, and the power is still low.
At present, in China, Stirling alcohol engines are in the stage of development and trial. Cold cavity and hot cavity in the Stirling engine on the market are closed in circulation, and a gas circulation mode of absorbing heat under a fixed volume is adopted. This circulation method has the following problems: when the room temperature is less than 22 ℃, the Stirling engine can run for a long time; when the room temperature is more than or equal to 30 ℃, after the start is carried out for 2-3 minutes, the temperature difference between the front cavity and the rear cavity (the cold cavity and the hot cavity) of the piston of the driving cylinder is very small, and the Stirling engine stops running, so that the Stirling engine cannot run continuously in summer, the output power of the Stirling engine is low, and the running popularization of the Stirling engine is limited.
In order to generate temperature difference between the gas in front of and behind the piston of the active cylinder, the technical scheme of the chinese patent CN101280737A uses a plurality of heating pipes to form a heater pipe group for enhanced heating, and uses a cooling pipe group for enhanced cooling, which easily causes damage to the heater and the cooler, and causes large flow resistance of the gas in the heater and the cooling chamber due to complex structure, and thus has low actual operation efficiency.
How to design a stirling engine with simple structure and high cycle operation efficiency becomes a technical problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
The invention aims to provide a Stirling engine device, wherein an active cylinder and a passive cylinder are communicated in a one-way mode, so that double cylinders are communicated with the outside in a one-way mode, a continuous temperature difference is formed, the process is simplified, and the operation efficiency is improved.
In order to solve the technical problems, the invention adopts the following technical scheme:
a stirling engine arrangement comprising: a base; the driving cylinder is fixedly arranged on the base, and a convection space is formed in the driving cylinder; the first piston is arranged in the convection space of the driving cylinder in a matching way, and the convection space in the driving cylinder is divided into a hot cavity and a cold cavity which are communicated with each other by the first piston; the first air inlet valve is communicated with the cold cavity, and one end of the first air inlet valve is opened to the outside air so as to enable the cold cavity to be communicated with the outside air in a one-way mode; the driven cylinder is fixedly arranged on the base and is separated from the driving cylinder; the passive cylinder is communicated with the cold cavity and is provided with an air outlet; the second piston is arranged in the driven cylinder in a matching mode, and an air inlet cavity is formed by the second piston and the driven cylinder; the air inlet cavity is communicated with the cold cavity in a one-way mode; the connecting mechanism is in transmission connection with the first piston and the second piston respectively, drives the first piston and the second piston to reciprocate in the driving cylinder and the driven cylinder respectively, pushes the gas in the cold cavity to be compressed and flow to the gas inlet cavity and be discharged from a gas outlet, and guides the external gas into the cold cavity through the first gas inlet valve; the heater is fixedly arranged on the base and positioned at the bottom of the driving cylinder and used for heating the gas in the hot cavity so that the gas flows back and forth between the hot cavity and the cold cavity and is periodically heated;
the air cylinder is characterized by further comprising a moving arm, the moving arm is connected with the driven air cylinder in a sliding mode, a first air port is formed in the moving arm, and the first air port is in a communicated state and a disconnected state, wherein the first air port is communicated with an air outlet in the driven air cylinder and is staggered with the air outlet;
the first inlet valve comprises a first one-way valve which limits the gas in the cold cavity from flowing out to the outside gas;
a connecting passage is arranged between the air inlet cavity and the cold cavity and is communicated with the air inlet cavity and the cold cavity; and a second one-way valve is arranged on the connecting passage and limits the gas in the gas inlet cavity to flow into the cold cavity.
Further, the connecting mechanism comprises a first rotating wheel in transmission connection, a first connecting mechanism, a second rotating wheel in transmission connection and a second connecting mechanism, the first rotating wheel and the second rotating wheel are in coaxial transmission connection, the first connecting mechanism is in transmission connection with the first piston, and the linear motion of the first piston is converted into the rotation of the first rotating wheel; the second connecting mechanism is in transmission connection with the second piston, and converts the linear motion of the second piston into the rotation of the second rotating wheel.
Further, the first connecting mechanism comprises a middle shaft, a joint head, a first connecting rod and a first crank which are sequentially connected, wherein the first end of the middle shaft is fixedly connected with the first piston, the second end of the middle shaft penetrates through the cold cavity and extends outwards to be connected with the joint head, the joint head is hinged to the first connecting rod, the first connecting rod is hinged to the first crank, and the first crank is fixedly connected with the first rotating wheel.
Furthermore, an opening is formed in one side, away from the air inlet cavity, of the driven cylinder, the second connecting mechanism is a crank-link mechanism, a first end of a second connecting rod in the crank-link mechanism is hinged to the second piston, and a second end of the second connecting rod penetrates through the driven cylinder and extends outwards to be hinged to a second crank in the crank-link mechanism.
Further, the first crank is 90 ° different from the second crank.
Further, the second piston is provided with a first limit position close to the second rotating wheel and a second limit position far away from the second rotating wheel, when the second piston reaches the first limit position, the first rotating wheel and the second rotating wheel continue to rotate under the inertia force to drive the first piston and the second piston to move back to the first rotating wheel and the second rotating wheel, the outside air enters the cold cavity through the first air inlet valve, and the air in the air inlet cavity is discharged from the air outlet.
Furthermore, a first latch and a second latch are fixedly arranged on the moving arm, the first latch and the second latch are arranged oppositely, and when the second piston moves towards the first rotating wheel, the second piston abuts against the first latch and pushes the moving arm to move, so that the first air port is in a communicated state; when the second piston moves back to the first rotating wheel, the second piston abuts against the second latch and pushes the moving arm to move, so that the first air port is in a disconnected state.
One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:
1. in the embodiment of the invention, a double-cylinder action mode is adopted, the heater heats the gas in the hot cavity of the driving cylinder, the cold gas in the cold cavity flows into the hot cavity, the first piston is pushed to move towards the first rotating wheel, and the first rotating wheel is driven to rotate through the first connecting mechanism; and the gas in the cold cavity is compressed to enter the gas inlet cavity of the driven cylinder, the second piston is pushed to move towards the second rotating wheel, and the second rotating wheel is driven to rotate through the second connecting mechanism until the second piston reaches a left dead center. The first piston and the second piston move in opposite directions due to inertia of the first rotating wheel, the second rotating wheel, the rotating shaft and other components, the driving cylinder sucks external gas through the first inlet valve, and the driven cylinder exhausts gas through the gas outlet to complete a working cycle. The cold cavity and the hot cavity of the driving cylinder always have temperature difference, so that the Stirling engine device can continuously run.
2. In the embodiment of the invention, the moving arm and the first air port are adopted, and the second piston moves in a reciprocating manner to touch the first latch and the second latch, so that the first air port and the air outlet are communicated or disconnected, and the air in the air inlet cavity is discharged to the outside or the air in the cold cavity flows into the air inlet cavity.
Drawings
Fig. 1 is a schematic structural view of a stirling engine apparatus according to the present invention;
FIG. 2 is a partial view from the direction A of FIG. 1;
FIG. 3 is a schematic structural diagram of an active cylinder;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a cross-sectional view B-B of FIG. 4;
fig. 6 is a schematic diagram of the operation of a stirling engine arrangement in an embodiment of the invention.
Description of the reference numerals
1-a base, 2-an active cylinder, 3-an alcohol lamp, 301-a felt pad, 4-a support, 5-a first piston, 6-a fixed plug, 7-a hot cavity, 8-a cold cavity, 9-a sealing head, 10-a central shaft, 11-a first rotating wheel, 12-a first connecting mechanism, 1201-a joint head, 1202-a first connecting rod, 1203-a first crank, 13-a pipe joint, 14-a first one-way valve, 15-a first air pipe, 16-a transmission mechanism, 1601-a rotating shaft, 1602-a supporting sleeve, 1603-an outer spacer, 1604-a bearing, 1605-an inner spacer and 1606-a top sleeve;
17-second wheel, 18-second one-way valve, 19-passive cylinder, 20-second piston, 21-second connecting mechanism, 2101-second crank, 2102-second connecting rod, 22-moving arm, 23-first latch, 24-second latch, 25-first air port, 26-second air port, 27-air inlet cavity and 28-second air pipe.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Fig. 1 to 6 show a schematic view of a stirling engine device according to the present invention. For convenience of description, the terms "upper", "lower", "left" and "right" are used in the same direction as the upper, lower, left and right directions of the drawings, but do not limit the structure of the present invention.
As shown in fig. 1 to 6, a stirling engine device includes: the device comprises a base 1, an active cylinder 2, a first piston 5, a first air inlet valve, a passive cylinder 19, a second piston 20, a connecting mechanism and a heater.
Wherein, base 1 sets up in the bottom of whole stirling engine device, and the cross-section of base 1 is the type of falling T, can support certain height with initiative cylinder 2 and passive cylinder 19.
And the driving cylinder 2 is fixedly arranged on the base 1. The first end of the driving cylinder 2 is closed, the second end is provided with a sealing head 9, and the sealing head 9 is connected with the second end of the driving cylinder 2 in a sealing manner, so that a relatively closed convection space is formed in the driving cylinder 2. Optionally, an O-ring is disposed at a connection position of the sealing head 9 and the driving cylinder 2, so that a sealing connection structure is formed between the sealing head 9 and the driving cylinder 2.
The first piston 5 is arranged in the convection space of the driving cylinder 2 in a matching way, and the convection space in the driving cylinder 2 is divided into a cold cavity 8 and a hot cavity 7 by the first piston 5. The inside diameter of the driving cylinder 2 may be 22mm, the outside diameter of the first piston 5 may be 21.4mm, and the driving cylinder 2 and the first piston 5 have a gap of 0.6mm in diameter, which allows the cold gas in the cold chamber 8 to flow into the hot chamber 7 to realize a convection circulation.
A first intake valve comprising a first check valve 14 and a first air duct 15. The driving cylinder 2 is provided with an air inlet which is communicated with a first air pipe 15, and the other end of the first air pipe 15 is open to the outside air. A first check valve 14 is provided on the first gas pipe 15 to communicate the cold chamber 8 with the outside air and to allow only the outside air to flow into the cold chamber 8 of the master cylinder 2. Optionally, the first gas pipe 15 may be placed in the water tank or connected to a refrigeration device (the outlet of the first gas pipe 15 is kept open to the outside air), so that the temperature of the gas entering the cold cavity 8 in the driving cylinder 2 is further reduced, a continuously large temperature difference is formed between the cold cavity 8 and the hot cavity 7, and then the stirling engine device can continuously operate, and the output power is increased.
The sealing head 9 of the driving cylinder 2 is connected with a pipe joint 13, and the pipe joint 13 is communicated with the cold chamber 8 of the driving cylinder 2.
And the passive cylinder 19 is fixedly arranged on the base 1, and the passive cylinder 19 and the active cylinder 2 are mutually separated. The passive cylinder 19 is closed at a first end and provided with an opening at a second end.
And the second piston 20 is arranged in the driven cylinder 19 in a matching way, and the second piston 5 and the driven cylinder 19 form an air inlet cavity 27. A connecting passage is provided between the inlet chamber 27 and the cold chamber 8 of the master cylinder 2, which connecting passage comprises a second gas pipe 28. The passive cylinder 19 is provided with an air inlet communicated with an air inlet cavity 27, the air inlet is communicated with the pipe joint 13 through a second air pipe 28, so that the air inlet cavity 27 of the passive cylinder 19 is communicated with the cold cavity 8 of the active cylinder 2, and the air in the cold cavity 8 flows into the air inlet cavity 27 of the passive cylinder 19.
The second air pipe 28 is provided with a second one-way valve 18, and the second one-way valve 18 limits the air in the air inlet cavity 27 to flow into the cold cavity 8, so that the cold cavity 8 of the driving cylinder 2 is communicated with the air inlet cavity 27 in one way, and the air can only flow into the air inlet cavity 27 of the driven cylinder 19 from the cold cavity 8 of the driving cylinder 2. Optionally, the first air pipe 15 and the second air pipe 28 are both PVC hoses to facilitate air flow.
The passive cylinder 19 is also provided with an air outlet, i.e. a second air port 26, and the air entering the air inlet cavity 27 is discharged to the outside air through the second air port 26.
The heater is embedded on the base 1 and is fixedly connected with the base 1. The heater can be an alcohol lamp 3, the alcohol lamp 3 is correspondingly arranged at the bottom of the hot cavity 7 part of the active cylinder 2, and the flame part of the alcohol lamp 3 is used for heating the gas in the hot cavity 7, so that the gas flows back and forth between the hot cavity 7 and the cold cavity 8 and is periodically heated. The alcohol burner 3 is provided with a felt pad 301 to seal the alcohol burner 3 to prevent the ethanol in the alcohol burner 3 from volatilizing and dissipating. The power generated by the alcohol lamp 3 makes the rotating wheel rotate rapidly, the rotating speed can reach 100-.
The connection mechanism comprises a first wheel 11, a first connection mechanism 12, a second wheel 17 and a second connection mechanism 21. The first rotating wheel 11 and the second rotating wheel 17 are coaxially connected in a transmission manner through a transmission mechanism 16, the transmission mechanism 16 comprises a rotating shaft 1601, a bearing sleeve 1602, an outer spacer 1603, two bearings 1604, an inner spacer 1605 and a top sleeve 1606, the bearing sleeve 1602 is supported through a support 4, and the support 4 is connected with the base 1 through screws; the two ends of the rotating shaft 1601 are respectively connected with the first runner 11 and the second runner 17, and the rotating shaft 1601 is fixed by two bearings 1604, so that the first runner 11 and the second runner 17 can rotate around the axis of the rotating shaft 1601. Optionally, the bearing 1604 is a deep groove ball bearing 1604, which has a small friction coefficient, a high limit rotation speed, and various size ranges and forms.
The first connecting mechanism 12 is in transmission connection with the first piston 5 and comprises a middle shaft 10, a joint head 1201, a first connecting rod 1202 and a first crank 1203 which are sequentially connected, the middle shaft 10 is arranged on the first piston 5 in a penetrating mode, the first end of the middle shaft is fixedly connected with the first piston 5, and the second end of the middle shaft penetrates through the cold cavity 8 and extends outwards to be connected with the joint head 1201; the joint of the middle shaft 10 and the first piston 5 is provided with a fixed plug 6, and the middle shaft 10 is fixed while the air tightness is increased. The middle shaft 10 is hermetically connected with the driving cylinder 2, so that the air tightness of the driving cylinder 2 is improved. The joint 1201 is hinged to the first link 1202, the first link 1202 is hinged to the first crank 1203 via a pin, and the first crank 1203 is fixedly connected to the first pulley 11 to convert the linear motion of the first piston 5 into the rotation of the first pulley 11.
The second connecting mechanism 21 is a crank link mechanism including a second crank 2101 and a second link 2102. The first end of the second connecting rod 2102 is hinged to the second piston 20 through a pin, the second end of the second connecting rod passes through the opening of the driven cylinder 19 and extends outwards to be hinged to the second crank 2101, and the second crank 2101 is fixedly connected with the second rotating wheel 17 to convert the linear motion of the second piston 20 into the rotation of the second rotating wheel 17.
The center distance of the first crank 1203 is not smaller than that of the second crank 2101, the difference between the first crank 1203 and the second crank 2101 is 90 degrees, and dead point positions are staggered with each other, so that the phenomenon of jamming can be avoided. The components of the first rotor 11, the second rotor 17 and the shaft 1601 have a certain weight to ensure that the rear 1/4 turns of the duty cycle have sufficient inertia to rotate.
The second piston 20 has a first limit position (i.e. left dead center) close to the first runner 11 and a second limit position (i.e. right dead center) far from the first runner 11, when the second piston 20 reaches the first limit position, the inertia of the first runner 11, the second runner 17, etc. causes it to continue rotating, the first piston 5 moves towards the thermal chamber 7 and compresses, the second piston 20 moves towards the intake chamber 27 and compresses, and due to the action of the first check valve 14 and the second check valve 18, the external air is sucked in through the first intake valve and discharged through the second intake port 26. When the second piston 20 reaches the second limit position, the compression process is ended, completing one working cycle.
The Stirling engine device further comprises a moving arm 22, a sliding groove is milled at the bottom of the driven cylinder 19, and the moving arm 22 is connected in the sliding groove in a sliding mode and can reciprocate along the moving direction of the second piston 20. The moving arm 22 is provided with a first port 25, and the first port 25 has a communicating state in which it communicates with a second port 26 of the passive cylinder 19 and a blocking state in which it is shifted from the second port 26. The cross section of the moving arm 22 is U-shaped, a first latch 23 and a second latch 24 are respectively and fixedly arranged on two side edges of the U-shape, and the first latch 23 and the second latch 24 are oppositely arranged. When the second piston 20 moves towards the first rotary wheel 11, the second piston 20 abuts against the first latch 23 and pushes the moving arm 22 to move leftwards until the second piston 20 is at the first limit position, so that the first air port 25 and the second air port 26 on the moving arm 22 are communicated, namely the first air port 25 is in a communicated state; when the second piston 20 moves away from the first wheel 11, the gas in the inlet chamber 27 is discharged outwards; the second piston 20 abuts against the second latch 24 and pushes the moving arm 22 to move rightward until the second piston 20 is at the second limit position, so that the first air port 25 on the moving arm 22 is staggered from the second air port 26, that is, the first air port 25 is in a disconnected state, and a work cycle is completed.
The working principle of one embodiment of the invention is as follows: when the Stirling engine device operates, the alcohol lamp 3 heats the gas in the hot cavity 7 of the driving cylinder 2, and the temperature of the gas rises. The gas in the cold chamber 8 flows into the hot chamber 7 through the gap between the first piston 5 and the cylinder wall of the driving cylinder 2, and pushes the first piston 5 to move and compress towards the cold chamber 8, so as to drive the first rotating wheel 11 to rotate. When the first piston 5 moves, the first intake valve is closed, and the gas in the cold chamber 8 is discharged into the intake chamber 27 of the passive cylinder 19 through the second gas pipe 28, so as to push the second piston 20 of the passive cylinder 19 to move towards the second runner 17 to drive the second runner 17 to rotate, and at the moment, the first gas port 25 and the second gas port 26 are staggered. When the second piston 20 moves to the first limit position, the moving arm 22 is pushed to move leftwards, and the first air port 25 and the second air port 26 are communicated; at this point, the first runner 11 and the second runner 17 run 3/4 revolutions. Due to the inertia of each component in the first connecting mechanism 12 and the second connecting mechanism 21, the first rotating wheel 11 and the second rotating wheel 17 continue to rotate, the first piston 5 moves towards the hot cavity 7 to be compressed, and outside air is sucked into the cold cavity 8; the second piston 20 moves and compresses towards the air inlet cavity 27, the air in the air inlet cavity 27 is discharged into the air, the cold cavity 8 and the hot cavity 7 of the driving cylinder 2 always have temperature difference, the long-term continuous work of the Stirling engine device is guaranteed, and the next cycle is started.
In summary, the stirling engine device provided by the invention adopts a double-cylinder action mode, the heater heats the gas in the hot cavity of the driving cylinder, the cold gas in the cold cavity flows into the hot cavity, the first piston is pushed to move towards the first rotating wheel, and the first rotating wheel is driven to rotate through the first connecting mechanism; and the gas in the cold cavity is compressed to enter the gas inlet cavity of the driven cylinder, the second piston is pushed to move towards the second rotating wheel, and the second rotating wheel is driven to rotate through the second connecting mechanism until the second piston reaches a left dead center. The first piston and the second piston move in opposite directions due to inertia of the first rotating wheel, the second rotating wheel, the rotating shaft and other components, the driving cylinder sucks external gas through the first inlet valve, and the driven cylinder exhausts gas through the gas outlet to complete a working cycle. The cold cavity and the hot cavity of the driving cylinder always have temperature difference, so that the Stirling engine device can continuously run. In the embodiment of the invention, the moving arm and the first air port are adopted, and the second piston moves in a reciprocating manner to touch the first latch and the second latch, so that the first air port and the air outlet are communicated or disconnected, and the air in the air inlet cavity is discharged to the outside or the air in the cold cavity flows into the air inlet cavity.
In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present disclosure, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A stirling engine apparatus, comprising:
a base;
the driving cylinder is fixedly arranged on the base, and a convection space is formed in the driving cylinder;
the first piston is arranged in the convection space of the driving cylinder in a matching way, and the convection space in the driving cylinder is divided into a hot cavity and a cold cavity which are communicated with each other by the first piston;
the first air inlet valve is communicated with the cold cavity, and one end of the first air inlet valve is opened to the outside air so as to enable the cold cavity to be communicated with the outside air in a one-way mode;
the driven cylinder is fixedly arranged on the base and is separated from the driving cylinder; the passive cylinder is communicated with the cold cavity and is provided with an air outlet;
the second piston is arranged in the driven cylinder in a matching mode, and an air inlet cavity is formed by the second piston and the driven cylinder; the air inlet cavity is communicated with the cold cavity in a one-way mode;
the connecting mechanism is in transmission connection with the first piston and the second piston respectively, drives the first piston and the second piston to reciprocate in the driving cylinder and the driven cylinder respectively, pushes the gas in the cold cavity to be compressed and flow to the gas inlet cavity and be discharged from a gas outlet, and guides the external gas into the cold cavity through the first gas inlet valve; and
the heater is fixedly arranged on the base and positioned at the bottom of the driving cylinder and used for heating the gas in the hot cavity so that the gas flows back and forth between the hot cavity and the cold cavity and is periodically heated;
the air cylinder is characterized by further comprising a moving arm, the moving arm is connected with the driven air cylinder in a sliding mode, a first air port is formed in the moving arm, and the first air port is in a communicated state and a disconnected state, wherein the first air port is communicated with an air outlet in the driven air cylinder and is staggered with the air outlet;
the first inlet valve comprises a first one-way valve which limits the gas in the cold cavity from flowing out to the outside gas;
a connecting passage is arranged between the air inlet cavity and the cold cavity and is communicated with the air inlet cavity and the cold cavity; and a second one-way valve is arranged on the connecting passage and limits the gas in the gas inlet cavity to flow into the cold cavity.
2. A stirling engine device according to claim 1, wherein the coupling means comprises a first rotor in driving connection, a first coupling means and a second rotor in driving connection, a second coupling means, the first rotor and the second rotor being in coaxial driving connection, the first coupling means being in driving connection with the first piston to convert linear movement of the first piston into rotation of the first rotor; the second connecting mechanism is in transmission connection with the second piston, and converts the linear motion of the second piston into the rotation of the second rotating wheel.
3. A stirling engine apparatus according to claim 2, wherein the first connecting mechanism comprises a central shaft, a joint head, a first connecting rod and a first crank, the central shaft, the joint head, the first connecting rod and the first crank are connected in sequence, the first end of the central shaft is fixedly connected to the first piston, the second end of the central shaft passes through the cold chamber and extends outwards to be connected to the joint head, the joint head is hinged to the first connecting rod, the first connecting rod is hinged to the first crank, and the first crank is fixedly connected to the first rotating wheel.
4. A Stirling engine apparatus according to claim 3, wherein the driven cylinder is provided with an opening at a side thereof remote from the inlet chamber, and the second connection means is a crank linkage mechanism in which a second connecting rod has a first end hinged to the second piston and a second end passing through the driven cylinder and extending outwardly to hinge a second crank of the crank linkage mechanism.
5. A Stirling engine arrangement according to claim 4, wherein the first crank is 90 ° from the second crank.
6. A Stirling engine apparatus according to claim 5, wherein the second piston has a first extreme position close to the second runner and a second extreme position far from the second runner, the first and second runners continue to rotate under inertial force when the second piston reaches the first extreme position, the first and second pistons are driven to move away from the first and second runners, the ambient gas enters the cold chamber through the first inlet valve, and the gas in the inlet chamber is exhausted from the outlet port.
7. A Stirling engine apparatus according to any one of claims 1 to 6, wherein a first latch and a second latch are fixedly provided on the moving arm, the first latch and the second latch being arranged to face each other, and when the second piston moves towards the first runner, the second piston abuts against the first latch and pushes the moving arm to move so that the first port is in a connected state; when the second piston moves back to the first rotating wheel, the second piston abuts against the second latch and pushes the moving arm to move, so that the first air port is in a disconnected state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910586803.2A CN110397517B (en) | 2019-07-01 | 2019-07-01 | Stirling engine device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910586803.2A CN110397517B (en) | 2019-07-01 | 2019-07-01 | Stirling engine device |
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| CN110397517A CN110397517A (en) | 2019-11-01 |
| CN110397517B true CN110397517B (en) | 2021-11-30 |
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| CN201910586803.2A Expired - Fee Related CN110397517B (en) | 2019-07-01 | 2019-07-01 | Stirling engine device |
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| CN117705002B (en) * | 2024-02-06 | 2024-04-16 | 成都夏商机动车鉴定评估有限公司 | Small-size crankshaft recycling detection clamp for diesel engine of light commercial vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6036761A (en) * | 1983-08-10 | 1985-02-25 | Naoji Isshiki | Stirling heat engine equipped with valve |
| KR940010581B1 (en) * | 1992-01-07 | 1994-10-24 | 삼성전자 주식회사 | Heat pump |
| JP2527897B2 (en) * | 1993-01-20 | 1996-08-28 | 東北電力株式会社 | Scavenging Stirling engine |
| CN2431406Y (en) * | 2000-06-09 | 2001-05-23 | 蔡裕清 | Double-cylinder external combustion engine |
| US7076941B1 (en) * | 2005-08-05 | 2006-07-18 | Renewable Thermodynamics Llc | Externally heated engine |
| CN101216001A (en) * | 2007-01-04 | 2008-07-09 | 上海齐耀动力技术有限公司 | Small-sized hot air engine |
| CN210889140U (en) * | 2019-07-01 | 2020-06-30 | 山东华宇工学院 | Stirling engine device |
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