CN113237246A - Stirling refrigerating and heating integrated machine - Google Patents
Stirling refrigerating and heating integrated machine Download PDFInfo
- Publication number
- CN113237246A CN113237246A CN202110406162.5A CN202110406162A CN113237246A CN 113237246 A CN113237246 A CN 113237246A CN 202110406162 A CN202110406162 A CN 202110406162A CN 113237246 A CN113237246 A CN 113237246A
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- inlet
- piezoelectric ceramic
- outlet
- end cover
- ceramic piece
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/14—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/12—Sound
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a Stirling refrigerating and heating integrated machine which comprises a heat regenerator, a cold end and a hot end, wherein an inlet and an outlet of a shell pass of the heat regenerator are connected with a refrigerant inlet, piezoelectric ceramic plates are symmetrical at two ends of a tube pass, a back pressure cavity is formed between the piezoelectric ceramic plates and the inlet and the outlet of the tube pass close to one end of the piezoelectric ceramic plates, an end cover is arranged at one end far away from the inlet and the outlet, a compression cavity is formed between a first end cover and the piezoelectric ceramic plates, one end cover is connected with the cold end, the other end cover is connected with the hot end, a control electrode connected with the piezoelectric ceramic plates is arranged at the end cover, and different piezoelectric ceramic plates are controlled to work by the control electrode, so that a mechanical structure can be cancelled, refrigerating and heating actions can be switched at the same time, the occupied area can be effectively reduced, the refrigerating and heating efficiencies can be improved, the noise can be avoided, and the service life can be prolonged.
Description
Technical Field
The invention relates to the field of heat exchangers, in particular to a Stirling refrigerating and heating integrated machine.
Background
The traditional compressor generally adopts refrigerant R22 or R134a, R407C and other Freon products for refrigeration, because Freon has great destructive power to the ozone layer, for the protection of the environment, it has become social consensus to reduce the use of Freon and even eliminate Freon products, and at present, a Stirling refrigerator manufactured by using the Stirling engine principle is available, but the refrigerator is of a mechanical structure, needs to complete the compression and expansion of working gas through the reciprocating motion of a motor-driven piston, often has the problems of large noise and short service life, and is limited by a mechanical transmission structure, so that the Stirling refrigerator has large size and weight and cannot be popularized, and the refrigerator can only refrigerate and can not perform heating, and the application range is narrow.
Disclosure of Invention
Aiming at the problems, the invention provides the Stirling refrigerating and heating integrated machine which has the advantages of no mechanical drive, small occupied area and capability of realizing the double functions of refrigeration and heating.
The technical scheme of the invention is as follows:
a Stirling refrigerating and heating integrated machine comprises a heat regenerator, a cold end and a hot end, wherein the heat regenerator comprises a shell pass and a tube pass, the tube pass is a cylindrical sleeve, the shell pass is a concentric sleeve coaxially sleeved outside the tube pass, an inlet and an outlet of the shell pass are connected with a refrigerant inlet, a first inlet and an outlet and a second inlet and an outlet are respectively arranged at two ends of the tube pass, one end of the first inlet and the outlet, which is far away from the second inlet and the second outlet, is connected with a first piezoelectric ceramic piece, one end of the second inlet and the outlet, which is far away from the first inlet and the second outlet, is connected with a second piezoelectric ceramic piece, a first back pressure cavity is formed between the first piezoelectric ceramic piece and the first inlet and the second outlet, a first end cover is arranged at one end of the first piezoelectric ceramic piece, which is far away from the first inlet and the second outlet, is provided with a second end cover, the piezoelectric ceramic chip comprises a first end cover, a second end cover, a first piezoelectric ceramic chip, a second piezoelectric ceramic chip, a first control electrode, a second control electrode and a second control electrode, wherein the first compression cavity is formed between the first end cover and the first piezoelectric ceramic chip, the second compression cavity is formed between the second end cover and the second piezoelectric ceramic chip, the first end cover is connected with a cold end, the second end cover is connected with a hot end, the first control electrode connected with the first piezoelectric ceramic chip is arranged at the position of the first end cover, and the second control electrode connected with the second piezoelectric ceramic chip is arranged at the position of the second end cover.
The first piezoelectric ceramic piece and the second piezoelectric ceramic piece adopt sine wave frequency, the frequency is more than 500Hz, and the working voltage is more than 2000V.
The first movable partition plate is arranged at the first inlet and outlet and can move along the axis direction of the tube pass, and the second movable partition plate is arranged at the second inlet and outlet and can move along the axis direction of the tube pass.
The refrigerant medium connected with the refrigerant inlet is nitrogen or helium.
The working pressure of the tube side is more than 3 MPa.
The invention has the beneficial effects that:
1. the hot end and the cold end are symmetrically connected with the two ends of the tube side, the piezoelectric ceramic piece is used for replacing a traditional mechanical piston to vibrate, the working gas is compressed and expanded through the piezoelectric ceramic piece, the gas compressed and expanded in the compression cavity enters the heat regenerator to exchange heat, and the heat regenerator can switch the heating and refrigerating actions according to the control time sequence and the phase of the piezoelectric ceramic;
2. the first piezoelectric ceramic piece and the second piezoelectric ceramic piece adopt sine wave frequency, the frequency is more than 500Hz, the working voltage is more than 2000V, and higher refrigerating and heating density can be obtained or obtained;
3. the movable partition plate capable of sliding along the tube pass is arranged, so that the volume of the back pressure cavity can be adjusted, and the back pressure cavities at different cold and hot ends can obtain the optimal volume;
4. the refrigerant is nitrogen or helium which is inert gas, the working pressure is more than 3MPa, and the working stability of the working cavity can be ensured.
Drawings
Fig. 1 is a schematic overall structure diagram of a stirling refrigerating and heating all-in-one machine according to an embodiment of the invention.
Description of reference numerals:
the device comprises a heat regenerator 1, a cold end 2, a hot end 3, a first piezoelectric ceramic piece 4, a second piezoelectric ceramic piece 5, a first back pressure cavity 6, a second back pressure cavity 7, a first end cover 8, a second end cover 9, a shell pass 11, a tube pass 12, a first control electrode 13, a second control electrode 14, a first movable partition 15, a second movable partition 16, a first compression cavity 41, a second compression cavity 51, a refrigerant inlet 111, a first inlet/outlet 121 and a second inlet/outlet 122.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings.
Example (b):
as shown in fig. 1, a stirling refrigerating and heating integrated machine comprises a heat regenerator 1, a cold end 2 and a hot end 3, wherein the heat regenerator 1 comprises a shell side 11 and a tube side 12, the tube side 12 is a cylindrical sleeve, the shell side 11 is a concentric sleeve coaxially sleeved outside the tube side 12, an inlet and an outlet of the shell side 11 are connected with a refrigerant inlet 111, two ends of the tube side 12 are respectively provided with a first inlet and outlet 121 and a second inlet and outlet 122, one end of the first inlet and outlet 121 far away from the second inlet and outlet 122 is connected with a first piezoelectric ceramic plate 4, one end of the second inlet and outlet 122 far away from the first inlet and outlet 121 is connected with a second piezoelectric ceramic plate 5, a first back pressure cavity 6 is formed between the first piezoelectric ceramic plate 4 and the first inlet and outlet 121, a second back pressure cavity 7 is formed between the second piezoelectric ceramic plate 5 and the second inlet and outlet 122, one end of the first piezoelectric ceramic plate 4 far away from the first inlet and outlet 121 is provided with a first end cover 8, one end of the second piezoelectric ceramic plate 5 far away from the second inlet and outlet 122 is provided with a second end cover 9, a first compression cavity 41 is formed between the first end cover 8 and the first piezoelectric ceramic piece 4, a second compression cavity 51 is formed between the second end cover 9 and the second piezoelectric ceramic piece 5, the first end cover 8 is connected with the cold end 2, the second end cover 9 is connected with the hot end 3, a first control electrode 13 connected with the first piezoelectric ceramic piece 4 is arranged at the first end cover 8, a second control electrode 14 connected with the second piezoelectric ceramic piece 5 is arranged at the second end cover 9, and the first control electrode 13 and the second control electrode 14 work alternately by controlling time sequence and phase.
The working principle of the technical scheme is as follows:
when the heat regenerator works, a refrigerant medium is introduced into a shell pass 11 of the heat regenerator 1 through a refrigerant inlet 111, a first control motor 13 and a second control motor 14 are alternately controlled at two ends of a tube pass 12, a first control electrode 13 of a cold end 2 controls the first piezoelectric ceramic piece 4 to vibrate, the first piezoelectric ceramic piece 4 vibrates to compress and refrigerate gas in a first compression cavity 41, the gas in a refrigerated first back pressure cavity 6 enters the tube pass through a first inlet/outlet 121 to exchange heat with the refrigerant, so that the refrigeration operation is realized, when heating is needed, the first control motor 13 is closed, the second control motor 14 is opened, a second piezoelectric ceramic piece 5 is driven by the second control motor 14 to vibrate, the gas in a second compression cavity 51 is compressed and heated, and then the heated gas in a second back pressure cavity 7 enters the tube pass through a second inlet/outlet 122 to exchange heat with the refrigerant, the heating operation is realized, the refrigeration and heating actions can be flexibly switched, a mechanical structure is not needed, the occupied area can be effectively reduced, the use noise is avoided, and the service life of the equipment is prolonged.
The first piezoelectric ceramic piece 4 and the second piezoelectric ceramic piece 5 adopt sine wave frequency, the frequency is more than 500Hz, the working voltage is more than 2000V, and higher refrigerating and heating density can be obtained.
The first inlet and outlet 121 is provided with a first movable partition 15, the first movable partition 15 can move along the axial direction of the tube side 12, the second inlet and outlet 122 is provided with a second movable partition 16, the second movable partition 16 can move along the axial direction of the tube side 12, and the volume of the back pressure cavity can be adjusted, so that the back pressure cavities at different ends of cold and hot can obtain the optimal volume.
The refrigerant medium connected with the refrigerant inlet 111 is nitrogen or helium, the working pressure of the tube side 12 is more than 3MPa, and the working stability of the working cavity can be ensured.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (5)
1. A Stirling refrigerating and heating integrated machine comprises a heat regenerator (1), a cold end (2) and a hot end (3), wherein the heat regenerator (1) comprises a shell side (11) and a tube side (12), the tube side (12) is a cylindrical sleeve, the shell side (11) is a concentric sleeve coaxially sleeved outside the tube side (12), an inlet and an outlet of the shell side (11) are connected with a refrigerant inlet (111), two ends of the tube side (12) are respectively provided with a first inlet and an outlet (121) and a second inlet and an outlet (122), and the Stirling refrigerating and heating integrated machine is characterized in that one end of the first inlet and outlet (121) far away from the second inlet and outlet (122) is connected with a first piezoelectric ceramic piece (4), one end of the second inlet and outlet (122) far away from the first inlet and outlet (121) is connected with a second piezoelectric ceramic piece (5), and a first back pressure cavity (6) is formed between the first piezoelectric ceramic piece (4) and the first inlet and outlet (121), a second back pressure cavity (7) is formed between the second piezoelectric ceramic piece (5) and the second inlet/outlet (122), a first end cover (8) is arranged at one end, far away from the first inlet/outlet (121), of the first piezoelectric ceramic piece (4), a second end cover (9) is arranged at one end, far away from the second inlet/outlet (122), of the second piezoelectric ceramic piece (5), a first compression cavity (41) is formed between the first end cover (8) and the first piezoelectric ceramic piece (4), a second compression cavity (51) is formed between the second end cover (9) and the second piezoelectric ceramic piece (5), the first end cover (8) is connected with the cold end (2), the second end cover (9) is connected with the hot end (3), a first control electrode (13) connected with the first piezoelectric ceramic piece (4) is arranged at the position of the first end cover (8), a second control electrode (14) connected with the second piezoelectric ceramic piece (5) is arranged at the position of the second end cover (9), the first control electrode (13) and the second control electrode (14) work alternately by controlling the timing and the phase.
2. A stirling refrigerating and heating all-in-one machine according to claim 1, wherein the first piezoceramic wafer (4) and the second piezoceramic wafer (5) adopt sine wave frequency, the frequency is greater than 500Hz, and the operating voltage is greater than 2000V.
3. A stirling refrigerating and heating all-in-one machine according to claim 1, wherein a first movable partition (15) is provided at the first inlet/outlet (121), the first movable partition (15) is movable along the axial direction of the tube side (12), a second movable partition (16) is provided at the second inlet/outlet (122), and the second movable partition (16) is movable along the axial direction of the tube side (12).
4. A stirling refrigerating and heating all-in-one machine according to claim 1, wherein the refrigerant medium connected to the refrigerant inlet (111) is nitrogen or helium.
5. A stirling refrigerating and heating all-in-one machine according to claim 1, wherein the tube side (12) working pressure is greater than 3 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110406162.5A CN113237246B (en) | 2021-04-15 | 2021-04-15 | Stirling refrigerating and heating integrated machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110406162.5A CN113237246B (en) | 2021-04-15 | 2021-04-15 | Stirling refrigerating and heating integrated machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113237246A true CN113237246A (en) | 2021-08-10 |
| CN113237246B CN113237246B (en) | 2022-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110406162.5A Active CN113237246B (en) | 2021-04-15 | 2021-04-15 | Stirling refrigerating and heating integrated machine |
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| Country | Link |
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| CN (1) | CN113237246B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000257973A (en) * | 1999-03-09 | 2000-09-22 | Sanyo Electric Co Ltd | Stirling refrigerator |
| JP2006144690A (en) * | 2004-11-22 | 2006-06-08 | Sharp Corp | Piezo-electric pump and sterling refrigerator/freezer |
| CN101057077A (en) * | 2004-11-17 | 2007-10-17 | 夏普株式会社 | Piezoelectric pump and stirling refrigerator |
| CN101208566A (en) * | 2005-06-23 | 2008-06-25 | 夏普株式会社 | Stirling cooling storage |
| US8371129B2 (en) * | 2010-04-20 | 2013-02-12 | King Abdul Aziz City for Science and Technology (KACST) | Standing wave thermoacoustic piezoelectric system and apparatus for generating electrical energy from heat energy |
| CN202759422U (en) * | 2012-06-27 | 2013-02-27 | 瑞声光电科技(常州)有限公司 | Piezoelectric vibrator |
| CN203108765U (en) * | 2013-02-21 | 2013-08-07 | 湖北瑜晖电子科技有限公司 | Water-cooling-type large-power ultrasonic transducer |
| JP5429317B2 (en) * | 2012-03-12 | 2014-02-26 | 株式会社村田製作所 | Piezoelectric micro pump |
| CN203893483U (en) * | 2014-04-01 | 2014-10-22 | 浙江源创电子科技有限公司 | Refrigerating device with vibration |
| CN104329900A (en) * | 2014-03-28 | 2015-02-04 | 海尔集团公司 | Control system for semiconductor refrigerator |
| TWI563234B (en) * | 2015-02-13 | 2016-12-21 | Univ Nat Cheng Kung | Miniature cooling system with piezoelectric device |
| CN106322818A (en) * | 2016-09-13 | 2017-01-11 | 奈申（上海）智能科技有限公司 | Rotation-type electrocaloric refrigeration device |
| CN107084551A (en) * | 2017-05-18 | 2017-08-22 | 武汉理工大学 | Noise reduction heat sink and method based on piezo-electric effect and semiconductor refrigerating |
| CN208224596U (en) * | 2018-05-18 | 2018-12-11 | 宁波大学 | A kind of piezoelectric deforming mirror with electronic cooling function |
| TW201944201A (en) * | 2018-04-09 | 2019-11-16 | 中原大學 | Miniature cooling system |
| CN210861794U (en) * | 2019-07-03 | 2020-06-26 | 同济大学 | Solid-state refrigerating device based on electrocaloric effect and piezoelectric effect |
-
2021
- 2021-04-15 CN CN202110406162.5A patent/CN113237246B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000257973A (en) * | 1999-03-09 | 2000-09-22 | Sanyo Electric Co Ltd | Stirling refrigerator |
| CN101057077A (en) * | 2004-11-17 | 2007-10-17 | 夏普株式会社 | Piezoelectric pump and stirling refrigerator |
| JP2006144690A (en) * | 2004-11-22 | 2006-06-08 | Sharp Corp | Piezo-electric pump and sterling refrigerator/freezer |
| CN101208566A (en) * | 2005-06-23 | 2008-06-25 | 夏普株式会社 | Stirling cooling storage |
| US8371129B2 (en) * | 2010-04-20 | 2013-02-12 | King Abdul Aziz City for Science and Technology (KACST) | Standing wave thermoacoustic piezoelectric system and apparatus for generating electrical energy from heat energy |
| JP5429317B2 (en) * | 2012-03-12 | 2014-02-26 | 株式会社村田製作所 | Piezoelectric micro pump |
| CN202759422U (en) * | 2012-06-27 | 2013-02-27 | 瑞声光电科技(常州)有限公司 | Piezoelectric vibrator |
| CN203108765U (en) * | 2013-02-21 | 2013-08-07 | 湖北瑜晖电子科技有限公司 | Water-cooling-type large-power ultrasonic transducer |
| CN104329900A (en) * | 2014-03-28 | 2015-02-04 | 海尔集团公司 | Control system for semiconductor refrigerator |
| CN203893483U (en) * | 2014-04-01 | 2014-10-22 | 浙江源创电子科技有限公司 | Refrigerating device with vibration |
| TWI563234B (en) * | 2015-02-13 | 2016-12-21 | Univ Nat Cheng Kung | Miniature cooling system with piezoelectric device |
| CN106322818A (en) * | 2016-09-13 | 2017-01-11 | 奈申（上海）智能科技有限公司 | Rotation-type electrocaloric refrigeration device |
| CN107084551A (en) * | 2017-05-18 | 2017-08-22 | 武汉理工大学 | Noise reduction heat sink and method based on piezo-electric effect and semiconductor refrigerating |
| TW201944201A (en) * | 2018-04-09 | 2019-11-16 | 中原大學 | Miniature cooling system |
| CN208224596U (en) * | 2018-05-18 | 2018-12-11 | 宁波大学 | A kind of piezoelectric deforming mirror with electronic cooling function |
| CN210861794U (en) * | 2019-07-03 | 2020-06-26 | 同济大学 | Solid-state refrigerating device based on electrocaloric effect and piezoelectric effect |
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| Publication number | Publication date |
|---|---|
| CN113237246B (en) | 2022-01-14 |
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