CN108223190B - Novel heat regeneration structure - Google Patents
Novel heat regeneration structure Download PDFInfo
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- CN108223190B CN108223190B CN201711438017.5A CN201711438017A CN108223190B CN 108223190 B CN108223190 B CN 108223190B CN 201711438017 A CN201711438017 A CN 201711438017A CN 108223190 B CN108223190 B CN 108223190B
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- piston
- air guide
- hot end
- hot
- vent hole
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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
- F02G1/057—Regenerators
Abstract
The invention provides a novel heat regeneration structure, and belongs to the technical field of Stirling motors. A novel regenerative structure comprises a hollow piston provided with a filler, wherein a cold end vent hole is formed in the end face of one end, close to a cold end, of the piston, a hot end vent hole is formed in the side wall of one end, close to a hot end, of the piston, a hot end air guide ring provided with an air guide channel corresponding to the hot end vent hole is sleeved on the outer side of the piston, two ends of the air guide channel are respectively connected with the hot end vent hole and the hot end of a Stirling motor, an air guide groove is formed in the hot end vent hole, and an end plug with an inclined surface is further arranged at the; according to the invention, the filler is arranged in the hollow part of the piston, so that the heat regeneration function is realized, and the heat leakage in the shell and the piston is reduced; meanwhile, the air guide groove is arranged, so that a hot end vent hole on the piston is always communicated with a hot end air guide ring, and the continuity of gas flow is ensured; and a piston and a shell with planar cold end faces are also arranged, so that dead volume is eliminated, and performance is improved.
Description
Technical Field
The invention relates to the technical field of Stirling motors, in particular to a novel regenerative structure.
Background
The Stirling motor is provided with a cold end and a hot end, and gas needs to pass through a regenerative structure when flowing between the cold end and the hot end, so that the improvement of the performance of the regenerative structure of the Stirling motor is the key point of current research.
At present, the regenerative structure of the stirling motor on the market comprises a hot end radiating fin and a cold end radiating fin, and a regenerator is arranged between the hot end radiating fin and the cold end radiating fin, and the hot end radiating fin, the cold end radiating fin and the regenerator are all annularly sleeved on a channel for piston movement, so that gas continuously passes through the hot end radiating fin, the regenerator and the cold end radiator under the action of a piston to release energy, however, the regenerative structure is arranged between the cold end and the hot end of the stirling motor and is also sleeved outside the piston to cause the large volume of the cold end and part of the hot end of the stirling motor, thereby causing the increase of the volume of a shell and the increase of heat leakage area, meanwhile, the inside of the piston of the current regenerative structure is hollow, heat can be conducted through the hollow inside of the piston, the heat leakage area can be increased, and the cold end of the shell is due to the structure of the piston, the piston can not reach the top of cold junction completely and in the laminating of the top surface of cold junction, causes the volume of partly dying, and the air in the dead volume does not do work, and these factors have all caused great influence to stirling motor's performance.
Disclosure of Invention
Aiming at the problems in the prior art, the aim is to provide a novel heat regeneration structure, a stainless steel wire mesh filler is arranged in a piston of a Stirling motor, a cold end vent hole is arranged at the top of one end of the piston close to a cold end, a plurality of hot end vent holes are arranged on a wall body of the piston close to a hot end, an inclined plane is arranged in the piston and at the hot end vent holes for air guide, an air guide groove along the moving direction of the piston is arranged at each hot end vent hole on the outer wall of the piston, a matched hot end air guide ring is arranged in the Stirling motor, the hot end air guide ring is arranged in a cylindrical shape, a plurality of air guide channels are axially arranged on the hot end air guide ring, one end of each air guide channel can be connected with the hot end of the corresponding air vent hole on the piston, and the other end of each air guide channel is connected in the, when the piston moves towards the cold end, gas at the cold end of the Stirling motor can enter the piston through the cold end vent hole at the top of the piston, and flows to the hot end vent hole on the piston after penetrating through a filler of a stainless steel wire mesh, and enters the gas guide channel in the hot end gas guide ring through the hot end vent hole and flows to the hot end of the Stirling motor.
The specific technical scheme is as follows:
a novel recuperative structure having the features of comprising: the Stirling engine comprises a piston and a hot end air guide ring, wherein the piston is arranged in a shell of the Stirling engine, the piston is arranged in a hollow cylinder, a plurality of cold end air vents are formed in one end face, close to a cold end, of the piston, a plurality of hot end air vents are formed in the side wall, close to a hot end, of the piston, the cold end air vents and the hot end air vents are communicated with the cavity of the piston, meanwhile, a filler is filled in the cavity of the piston, a hot end air guide ring is sleeved on the outer side of one end, close to the hot end, of the piston, the hot end air guide ring is arranged in a cylinder shape, a plurality of air guide channels are formed in the wall body of the hot end air guide ring along the axial direction of the hot end air guide ring, one ends of the air guide channels can.
The novel heat regeneration structure is characterized in that a truncated cone-shaped end plug is arranged in the hollow cavity of the piston and is positioned at the hot end vent hole, the inclined plane of the end plug is close to the hot end vent hole, and the bottom of the inclined plane of the end plug does not exceed the edge of the hot end vent hole.
The novel heat regeneration structure is characterized in that the end plug is embedded in the hollow cavity of the piston, and the end plug is in threaded connection with the piston.
The novel heat regeneration structure is characterized in that an air guide groove is formed in the outer wall of the piston and located at each hot end air vent, the air guide grooves are arranged along the motion direction of the piston, and the air guide grooves are formed in the two sides of the hot end air vents along the length direction of the piston.
In the above novel heat regeneration structure, the filler is a stainless steel wire mesh.
In the above new regenerative structure, the end face of the piston near the end of the cold end is a plane.
In the novel heat regeneration structure, the end surface of the shell at the cold end of the stirling motor is a plane.
In the above novel regenerative structure, the air guide channels are distributed on the hot end air guide ring in an annular array.
In the above novel regenerative structure, the hot end vents are arranged on the piston in an annular array; the air guide grooves are arranged on the outer wall of the piston in an annular array.
The positive effects of the technical scheme are as follows: 1. gas circulates at the cold end and the hot end through the interior of the piston, so that the condition that parts are added outside the piston is eliminated, the size is effectively reduced, the piston is convenient to arrange in a narrow area with limited space, the applicability is higher, the heat leakage area of the shell is reduced, and the heat leakage problem inside the piston is also avoided; 2. the end face of the piston at the cold end and the end face of the shell at the cold end of the Stirling motor are also arranged in a plane, so that the gas can be completely discharged, the dead volume of the gas without doing work is eliminated, and the performance of the Stirling motor is improved; 3. an end plug is arranged at one end of the piston, which is provided with a hot end vent hole, and the end plug is arranged in a round table shape, the inclined surface of the end plug is convenient for gas to pass through the hot end vent hole, and the gas guiding capability is stronger; 4. the outer wall of the piston and the position of each hot end vent hole are provided with air guide grooves, and the air guide grooves are positioned at two sides of the hot end vent hole in the moving direction of the piston, so that the hot end vent hole can be still communicated with an air guide channel of a hot end air guide ring through the air guide grooves in the moving process of the piston, and the smoothness of air flow is ensured; 5. the hollow piston is internally provided with the filler which is a stainless steel wire mesh, so that the piston can play a role of a regenerator and has longer service life; 6. the piston is provided with an end plug which is in threaded connection with the piston, so that the filling of the filler is facilitated, and the piston is convenient to maintain and repair.
Drawings
FIG. 1 is a structural diagram of an embodiment of a novel regenerative structure according to the present invention;
FIG. 2 is a view angle structure of a hot end air guide ring according to a preferred embodiment of the present invention;
fig. 3 is an enlarged view of a portion a in fig. 1.
In the drawings: 1. a housing; 2. a piston; 21. a hot end vent; 22. a gas guide groove; 3. an end plug; 31. a bevel; 4. a hot end gas ring; 41. an air guide channel.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the present invention easy to understand, the following embodiments specifically describe the technical solutions provided by the present invention with reference to fig. 1 to 3, but the following contents are not to be taken as limitations of the present invention.
FIG. 1 is a structural diagram of an embodiment of a novel regenerative structure according to the present invention; FIG. 2 is a view angle structure of a hot end air guide ring according to a preferred embodiment of the present invention; fig. 3 is an enlarged view of a portion a in fig. 1. As shown in fig. 1, 2 and 3, the novel heat recovery structure provided by this embodiment includes: piston 2, hot end air vent 21, air guide groove 22, end plug 3, inclined plane 31, hot end air guide ring 4 and air guide channel 41.
Specifically, a piston 2 is arranged in a Stirling motor shell 1, the piston 2 can move along the direction from a cold end to a hot end or from the hot end to the cold end, and the movement of the piston 2 drives the flow of gas in the cold end and the hot end, so that the mechanism of the Stirling motor is embodied.
Specifically, piston 2 is cylindrical setting, and piston 2 is the cavity setting, piston 2 has seted up a plurality of cold junction air vents on being close to the terminal surface of the one end of stirling motor cold junction, piston 2 has seted up a plurality of hot junction air vents 21 on being close to the lateral wall of the one end of stirling motor hot junction, hot junction air vent 21 is the annular array and sets up on piston 2's lateral wall, the homogeneity that the gas flows has been guaranteed, and simultaneously, piston 2's cavity intussuseption is filled with the filler, replace the effect of regenerator by the filler, it is preferred, the filler is stainless steel wire mesh, piston 2's life has been prolonged, and the performance is more stable.
Specifically, a hot end air guide ring 4 is sleeved on the outer side of one end of the piston 2 close to the hot end, the hot end air guide ring 4 is arranged in a cylindrical shape, and a plurality of air guide channels 41 are arranged in the wall body of the hot end air guide ring 4 along the axial direction, the air guide channels 41 are distributed on the hot end air guide ring 4 in an annular array, one end of each air guide channel 41 can correspond to and is communicated with each hot end vent hole 21 on the piston 2 one by one, the other end of each air guide channel 41 is communicated with the hot end of the Stirling motor, so that the gas coming out of the hot end vent holes 21 of the piston 2 can enter the hot end of the Stirling motor through the air guide channels 41 on the hot end air guide ring 4, or the gas at the hot end of the Stirling motor can enter the hot end vent hole 21 of the piston 2 through the gas guide channel 41 on the hot end gas guide ring 4 and then enter the cold end of the Stirling motor through the cold end vent hole of the piston 2.
More specifically, in the cavity of piston 2 and be located the one end that is close to the stirling motor hot junction and be provided with end plug 3, the one end of end plug 3 is the setting of round platform type, the one end that end plug 3 is the setting of round platform type is located hot junction air vent 21 department, and the inclined plane 31 of end plug 3 is close to hot junction air vent 21, and the bottom of inclined plane 31 is no longer than hot junction air vent 21 hole limit, guaranteed when having gas to be close to hot junction air vent 21, gas can enter into hot junction air vent 21 or piston 2 through the guide of the inclined plane 31 of end plug 3, realized the effect of gas guide, be convenient for gaseous flow.
More specifically, a plurality of air guide grooves 22 are arranged on the side wall of the piston 2 and at the position of the hot end vent hole 21, each air guide groove 22 corresponds to one hot end vent hole 21, the air guide grooves 22 are arranged along the moving direction of the piston 2, meanwhile, the air guide grooves 22 are arranged at two sides of the hot end vent hole 21 along the length direction of the piston 2, so that the hot end vent hole 21 can be communicated with the hot end air guide ring 4 through the air guide grooves 22 in the process that the piston 2 moves towards the cold end of the stirling motor, and the hot end vent hole 21 can also be communicated with the hot end air guide ring 4 through the air guide grooves 22 in the process that the piston 2 moves towards the hot end of the stirling motor, so that the cold end and the hot end of the stirling motor are always communicated, and the normal operation of the heat regenerator is ensured.
More specifically, the terminal surface of the casing 1 of stirling motor cold junction is the plane setting, and piston 2 is close to the cold junction and is provided with the terminal surface of cold junction air vent and be the plane setting equally, has guaranteed that piston 2 can support completely when the cold junction moves on casing 1 by piston 2, has realized gaseous getting rid of completely, has eliminated the dead volume of gaseous not doing work, has promoted stirling motor's performance.
As a preferred embodiment, the end plug 3 and the piston 2 are in threaded connection, which facilitates the assembly and disassembly of the end plug 3, and also facilitates the addition of fillers in the piston 2 and the subsequent maintenance and repair.
The novel heat recovery structure provided by the embodiment comprises a hollow piston 2, a cold end vent hole is formed in the end face of one end, close to a cold end, of the piston 2, a hot end vent hole 21 is formed in the side wall of one end, close to a hot end, of the piston 2, filler is filled in the hollow of the piston 2, a hot end air guide ring 4 is sleeved on the outer side of one end, close to the hot end, of the piston 2, an air guide channel 41 corresponding to the hot end vent hole 21 is formed in the hot end air guide ring 4 along the axial direction of the hot end air guide ring, one end of the air guide channel 41 is connected with the hot end vent hole 21, the other end of the air guide channel is communicated with the hot end of a Stirling motor, meanwhile, an air guide groove 22 is formed; the heat regeneration function is realized by arranging the filler in the hollow cavity of the piston 2, the volume is increased without being arranged outside the piston 2, the heat leakage of the shell 1 is reduced, and the heat leakage inside the piston 2 is eliminated; meanwhile, the gas guide groove 22 is also arranged, so that gas in the piston 2 can be always communicated with the hot end gas guide ring 4, and the flowing continuity of the gas is ensured; the end plug 3 with the inclined surface 31 is also arranged and used for guiding air and facilitating the flow of the air; and the piston 2 and the shell 1 which are provided with the cold ends and have planar end surfaces eliminate dead volume of gas without doing work, are convenient for complete discharge of gas and improve performance. .
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (8)
1. A novel backheating structure is characterized by comprising: the piston is arranged in a shell of the Stirling motor and is arranged in a hollow cylinder, a plurality of cold end vent holes are arranged on one end surface of the piston close to the cold end of the Stirling motor, a plurality of hot end vent holes are arranged on the side wall of one end of the piston close to the hot end of the Stirling motor, and the cold end vent hole and the hot end vent hole are both communicated with the hollow part of the piston, and simultaneously, the hollow of the piston is filled with filler, the outer side of one end of the piston close to the hot end is sleeved with the hot end air guide ring which is arranged in a cylindrical shape, a plurality of air guide channels are axially arranged in the wall body of the hot end air guide ring, one ends of the air guide channels can correspond to and are communicated with each hot end air vent on the piston one by one, and the other ends of the air guide channels are communicated with the hot end of the Stirling motor; and the outer wall of the piston and the position of each hot end vent hole are provided with air guide grooves, the air guide grooves are arranged along the motion direction of the piston, and the air guide grooves are arranged on two sides of each hot end vent hole along the length direction of the piston.
2. The novel heat recovery structure of claim 1, wherein a truncated cone-shaped end plug is disposed in the hollow of the piston and at the hot end vent hole, the inclined surface of the end plug is close to the hot end vent hole, and the bottom of the inclined surface of the end plug does not exceed the edge of the hot end vent hole.
3. The novel regenerative structure according to claim 2, wherein the end plug is embedded in the hollow of the piston, and the end plug is screwed to the piston.
4. The novel regenerative structure according to claim 1, wherein the filler is stainless steel wire mesh.
5. The new regenerator structure of claim 1, wherein the end surface of the piston near the end of the cold end is a flat surface.
6. The novel regenerative structure according to claim 1, wherein an end face of the housing at the cold end of the stirling motor is a flat surface.
7. The new heat recovery structure of claim 1, wherein the air guide channels are distributed on the hot end air guide ring in a circular array.
8. The novel recuperative structure of claim 1, wherein said hot side vents are disposed on said piston in an annular array; the air guide grooves are arranged on the outer wall of the piston in an annular array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711438017.5A CN108223190B (en) | 2017-12-26 | 2017-12-26 | Novel heat regeneration structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711438017.5A CN108223190B (en) | 2017-12-26 | 2017-12-26 | Novel heat regeneration structure |
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| Publication Number | Publication Date |
|---|---|
| CN108223190A CN108223190A (en) | 2018-06-29 |
| CN108223190B true CN108223190B (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711438017.5A Active CN108223190B (en) | 2017-12-26 | 2017-12-26 | Novel heat regeneration structure |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3415054A (en) * | 1966-04-05 | 1968-12-10 | Leybold Holding Ag | Demonstration model of hot air motor and heat pump |
| US3481142A (en) * | 1966-04-05 | 1969-12-02 | Leybold Heraeus Verwaltung | Demonstration model of a hot air motor and pump |
| US3650118A (en) * | 1969-10-20 | 1972-03-21 | Cryogenic Technology Inc | Temperature-staged cryogenic apparatus |
| US4543792A (en) * | 1982-09-09 | 1985-10-01 | Helix Technology Corporation | Refrigeration system with clearance seals |
-
2017
- 2017-12-26 CN CN201711438017.5A patent/CN108223190B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3415054A (en) * | 1966-04-05 | 1968-12-10 | Leybold Holding Ag | Demonstration model of hot air motor and heat pump |
| US3481142A (en) * | 1966-04-05 | 1969-12-02 | Leybold Heraeus Verwaltung | Demonstration model of a hot air motor and pump |
| US3650118A (en) * | 1969-10-20 | 1972-03-21 | Cryogenic Technology Inc | Temperature-staged cryogenic apparatus |
| US4543792A (en) * | 1982-09-09 | 1985-10-01 | Helix Technology Corporation | Refrigeration system with clearance seals |
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| Publication number | Publication date |
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| CN108223190A (en) | 2018-06-29 |
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