TWI707113B - Stirling refrigerator having phase difference between multiple displacers thereof - Google Patents

Abstract

A Stirling refrigerator having a phase difference between multiple displacers thereof includes a cylinder, a first displacer, a second displacer, a piston, and a linkage assembly. The cylinder includes a compression space, a first expansion space, and a second expansion space, wherein the compression space communicates with the first expansion space, and the first expansion space communicates with the second expansion space. The first and the second displacers are placed in the first and the second expansion spaces, respectively. The piston is placed in the compression space. The linkage assembly is connected to the piston in order to drive the piston to compress a working fluid in the compression space. The linkage assembly also moves the first and the second displacers which are placed in the first and the second expansion spaces, respectively, to yield a phase difference between the displacements of the first and the second displacers.

Description

Stirling refrigerator that produces phase difference between plural air shifters

The present invention relates to a two-stage Stirling refrigerator, which adjusts the phase difference between different displacers to improve the freezing effect.

At present, most of the common traditional Stirling cycle devices use the linkage mechanism to drive the piston and the displacer. Once the linkage mechanism is determined, the phase angle between the piston and the displacer is determined. However, the optimal phase angle design , It is often necessary to make corresponding changes with the operating state of the Stirling cycle device, but the traditional Stirling cycle device cannot adjust the phase angle in time during operation.

In order to solve the above-mentioned deficiencies, the author has proposed the Republic of China Invention Patent Publication No. I558965 "Stirling cycle device with phase difference adjustment function and its phase difference adjustment method", a history of the case with phase difference adjustment function Trane cycle device and its phase difference adjustment method. The aforementioned Stirling cycle device with phase difference adjustment function includes: a cylinder, a plurality of displacement parts and a linkage assembly, wherein the cylinder defines a substantially sealed working space, The plurality of displacement members are located in the working space, and at least one of the plurality of displacement members includes a first end, a second end, and a phase adjustment unit connecting the first end and the second end, the linkage assembly The plurality of displacement elements are connected to move the displacement of the plurality of displacement elements to compress a working gas in the working space and make the positions of the plurality of displacement elements have a phase difference, and the phase adjustment unit is used to adjust the plurality of displacement elements The phase difference. In this case, a single piston is used to control the displacement of a single displacer. To form a phase difference, at least two pistons are required The phase difference is formed with a displacer, and the phase difference is controlled by the phase adjustment unit.

In view of this, the inventor proposes a Stirling refrigerator that produces a phase difference between plural displacers. The present invention only needs a piston to compress the adjacent displacers, and the preset phase difference can be set, or by The phase difference adjustment unit adjusts the phase difference of the adjacent displacers. When the temperature of the expansion chamber connected to the compression chamber is lower than the temperature of the adjacent expansion chamber, a secondary compression effect will be formed, which makes the freezing effect better. Ling Refrigerator uses natural fluid as the working fluid, which saves the additional problems that may be caused by synthetic refrigerant. At the same time, since the Stirling refrigerator is a closed loop system and does not need a throttle valve to control, the structure is much simpler than other types of refrigerators.

A Stirling refrigerator that generates a phase difference between plural displacers, including: a cylinder, plural displacers, pistons and a linkage assembly. The cylinder area separates a compression chamber and a plurality of successively adjacent expansion chambers, the adjacent expansion chambers are connected to each other, and one of the expansion chambers communicates with the compression chamber. The plural displacers are respectively placed in one of the expansion chambers. The piston is placed in the compression chamber. The linkage assembly is connected to the piston, the linkage assembly drives the piston to move in the compression chamber to compress a working fluid, and causes each displacer to displace in the corresponding expansion chamber, while the displacers in the adjacent expansion chambers There is a phase difference between them.

A Stirling refrigerator that generates a phase difference between plural displacers, including: a cylinder, a first displacer, a second displacer, a piston and a linkage assembly. The cylinder has a compression chamber, a first expansion chamber, and a second expansion chamber. The compression chamber communicates with the first expansion chamber, and the first expansion chamber communicates with the second expansion chamber. The first displacer is placed in the first expansion chamber. The second displacer is placed in the second expansion chamber. The piston is placed in the compression chamber. The linkage assembly is connected to the piston, and the linkage assembly drives the piston to move in the compression chamber to compress a working fluid, and make the first displacer in the first expansion chamber position And the second displacer is displaced in the second expansion chamber, and the displacement of the first displacer and the second displacer have a phase difference.

A Stirling refrigerator that generates a phase difference between plural displacers, including: a cylinder, a first displacer, a second displacer, a phase adjustment unit, a piston and a linkage assembly. The cylinder has a compression chamber, a first expansion chamber, and a second expansion chamber. The compression chamber communicates with the first expansion chamber, and the first expansion chamber communicates with the second expansion chamber. The first displacer is placed in the first expansion chamber. The second displacer is placed in the second expansion chamber. The phase adjustment unit is connected between the first displacer and the second displacer, and the phase adjustment unit can include an elastic member and a damper. The piston is placed in the compression chamber. The linkage assembly is connected to the piston, and the linkage assembly drives the piston to displace in the compression chamber to compress a working fluid, displace the first displacer in the first expansion chamber, and displace the second displacer in the compression chamber. The second expansion chamber is displaced, and the displacements of the first displacer and the second displacer have a phase difference, and the phase difference can be adjusted through the phase adjustment unit.

A Stirling refrigerator that generates a phase difference between plural displacers, including: a cylinder, a first displacer, a second displacer, a piston and a linkage assembly. The cylinder has a first compression chamber, a second compression chamber, and an expansion chamber. The expansion chamber is located between the first compression chamber and the second compression chamber. The first compression chamber, the second compression chamber, and the The expansion chambers communicate with each other. The first displacer is placed in the expansion chamber. The second displacer is placed in the expansion chamber. The piston has a first piston and a second piston, the first piston is placed in the first compression chamber, and the second piston is placed in the second compression. The linkage assembly has a first linkage assembly and a second linkage assembly. The first linkage assembly is connected to the first piston, the second linkage assembly is connected to the second piston, and the first linkage assembly drives the first piston and causes The first displacer displaces in the expansion chamber, the second linkage assembly drives the second piston and causes the second displacer to displace in the expansion chamber, and the first displacer and the second displacer The displacement of the device has a phase difference.

Further, a regenerator is arranged in the center of the above-mentioned displacer.

Further, the linkage assembly is any one or a combination of a crank transmission mechanism, a swash plate type transmission mechanism, a rhombus transmission mechanism, a Ross transmission mechanism, an elastic element or a magnetic conductive member.

Further, the range of the phase difference between adjacent displacers is between minus 50 degrees and 75 degrees.

According to the above technical features, the following effects can be achieved:

1. The Stirling refrigerator of the present invention can use a single piston to drive a plurality of displacers, so that adjacent displacers have a phase difference.

2. The Stirling refrigerator of the present invention can first set the phase difference between different displacers; or adjust the phase difference by the phase adjustment unit according to the required temperature, so that the device can be kept in the best operating state at any time, Improve the efficiency and performance of the Stirling cycle device.

3. The Stirling refrigerator of the present invention is a plurality of adjacent displacers, used to control the gas exchange of plural adjacent expansion chambers, and the regenerator is arranged in the middle of the displacers.

4. In the present invention, the Stirling refrigerator uses natural fluid as the working fluid, and does not need to add artificial synthetic refrigerant, and does not need to use a throttle valve to control the air flow.

(1): Cylinder

(11): Compression chamber

(12): The first expansion chamber

(13): Second expansion chamber

(2): The first mover

(21): The first regenerator

(3): Second mover

(31): Second regenerator

(4): Piston

(5): Linkage components

(6): Phase adjustment unit

(61): Elastic

(62): Damping

(7): The first refrigerator

(8): The second cooler

(1a): cylinder

(11a): Compression chamber

(12a): The first expansion chamber

(13a): Second expansion chamber

(14a): Third expansion chamber

(2a): First mover

(21a): The first regenerator

(3a): Second mover

(31a): Second regenerator

(4a): Third mover

(41a): Third regenerator

(5a): Piston

(6b): Linkage components

(7a): The first phase adjustment unit

(71a): The first elastic part

(72a): First damping

(8a): The second phase adjustment unit

(81a): second elastic part

(82a): Second damping

(91a): The first cooler

(92a): Second cooler

(93a): The third cooler

(1b): cylinder

(11b): The first compression chamber

(12b): The second compression chamber

(13b): Expansion chamber

(14b): The third expansion chamber

(2b): First mover

(21b): First regenerator

(3b): Second mover

(31b): Second regenerator

(41b): First piston

(42b): Second piston

(51b): The first linkage component

(52b): Second linkage assembly

θ: Phase difference

T _C : Compression chamber temperature

T _e1 : temperature of the first expansion chamber

T _e2 : temperature of the second expansion chamber

[The first figure] is a schematic diagram of the structure of the first embodiment of the present invention.

[The second figure] is a schematic diagram of the structure of the second embodiment of the present invention.

[The third figure] is a schematic diagram of the structure of the third embodiment of the present invention.

[Fourth Figure] is a schematic diagram of the structure of the fourth embodiment of the present invention. [The fifth figure] is a simulation based on the structure of the first embodiment of the present invention, showing that the phase difference between the first displacer and the second displacer corresponds to the unloaded temperature of the first expansion chamber and the second expansion chamber.

Based on the above technical features, the main effects of the Stirling refrigerator that produces a phase difference between the plural displacers of the present invention will be clearly presented in the following embodiments.

Please refer to the first figure. In the first embodiment of the present invention, the Stirling refrigerator that produces a phase difference between plural displacers includes: a cylinder (1), a first displacer (2), and a second A displacer (3), a piston (4), a linkage assembly (5), a first refrigerator (7) and a second refrigerator (8). The cylinder (1) has a compression chamber (11), a first expansion chamber (12), and a second expansion chamber (13). The compression chamber (11) communicates with the first expansion chamber (12), and the first expansion chamber (12) The chamber (12) communicates with the second expansion chamber (13). The first displacer (2) is placed in the first expansion chamber (12), and the first displacer (2) has a first regenerator (21) arranged in the center. The second displacer (3) is placed in the second expansion chamber (13), and the second displacer (3) has a second regenerator (31) arranged in the center. The piston (4) is placed in the compression chamber (11). The linkage assembly (5) is connected to the piston (4), and the linkage assembly (5) drives the piston (4) to displace in the compression chamber (11) to compress a working fluid and make the first displacer (2) Displacement in the first expansion chamber (12), and displace the second displacer (3) in the second expansion chamber (13), and the first displacer (2) and the second displacer The displacement of (13) has a phase difference, and the linkage assembly (5) is any one of a crank transmission mechanism, a swash plate transmission mechanism, a diamond transmission mechanism, a Ross transmission mechanism, an elastic element or a magnetic conductive member. combination.

Please refer to the second figure. The second embodiment of the present invention generates a phase difference between the Stirling refrigerator includes: a cylinder (1), a first displacer (2), a second A displacer (3), a piston (4), a linkage assembly (5), a phase adjustment unit (6), a first refrigerator (7) and a second refrigerator (8). The cylinder (1) has a compression chamber (11), a first expansion chamber (12) and a second expansion chamber (13). The shrinking chamber (11) communicates with the first expansion chamber (12), and the first expansion chamber (12) communicates with the second expansion chamber (13). The first displacer (2) is placed in the first expansion chamber (12), and the first displacer (2) has a first regenerator (21) arranged in the center. The second displacer (3) is placed in the second expansion chamber (13), and the second displacer (3) has a second regenerator (31) arranged in the center. The piston (4) is placed in the compression chamber (11). The linkage assembly (5) is connected to the piston (4), and the linkage assembly (5) drives the piston (4) to displace in the compression chamber (11) to compress a working fluid and make the first displacer (2) Displacement in the first expansion chamber (12), and displace the second displacer (3) in the second expansion chamber (13), and the first displacer (2) and the second displacer The displacement of (13) has a phase difference, and the linkage assembly (5) is any one of a crank transmission mechanism, a swash plate transmission mechanism, a diamond transmission mechanism, a Ross transmission mechanism, an elastic element or a magnetic conductive member. combination. The phase adjustment unit (6) is connected between the first displacer (2) and the second displacer (3), and the phase adjustment unit (6) includes an elastic member (61) and a damping (62) ).

Please refer to the third figure. In the third embodiment of the present invention, the Stirling refrigerator that produces a phase difference between plural displacers includes: a cylinder (1a), plural displacers, a piston (5a), and a linkage Components (6a), a phase adjustment unit and multiple refrigerators. The cylinder (1a) has a compression chamber (11a), a first expansion chamber (12a), a second expansion chamber (13a) and a third expansion chamber (14a), and the compression chamber (11a) communicates with the first expansion chamber The first expansion chamber (12a) communicates with the second expansion chamber (13a), and the second expansion chamber (13a) communicates with the third expansion chamber (14a). The plural movers have a first mover (2a), a second mover (3a) and a third mover (4a), and the first mover (2a) is placed in the first expansion chamber (12a), the first displacer (2a) has a first regenerator (21a) arranged in the center. The second displacer (3a) is placed in the second expansion chamber (13a), and the second displacer (3a) has a second regenerator (31a) arranged in the center. The third displacer (4a) is placed in the third expansion chamber (14a), and the third displacer (4a) has a third regenerator (41a) arranged in the center. The piston (5a) is placed in the compression chamber (11a). The linkage assembly (6a) is connected to the piston (5a), and the linkage assembly (5) It is any one or a combination of a crank drive mechanism, a swash plate drive mechanism, a diamond drive mechanism, a Ross drive mechanism, an elastic element or a magnetic conductive member. The phase adjustment unit has a first phase adjustment unit (7a) and a second phase adjustment unit (8a), the first phase adjustment unit (7a) includes a first elastic member (71a) and a first damping unit (72a) , The first phase adjustment unit (7a) is arranged between the first displacer (2a) and the second displacer (3a), and the second phase adjustment unit (8a) includes a first elastic member ( 81a) and a first damper (82a). The second phase adjustment unit (8a) is arranged between the second displacer (3a) and the third displacer (4a). The linkage assembly (6a) drives the piston (5a) to displace in the compression chamber (11a) to compress a working fluid, and causes the first displacer (2a) to displace in the first expansion chamber (12a). The second displacer (3a) is displaced in the second expansion chamber (13a), the third displacer (4a) is displaced in the second expansion chamber (14a), and the first displacer (2a) and the The displacement of the second displacer (3a) has a first phase difference, the displacement of the second displacer (3a) and the third displacer (4a) have a second phase difference, and the first phase difference is The two phase differences can be adjusted to the same phase difference or different phase differences. The refrigerator includes a first refrigerator (91a), a second refrigerator (92a) and a third refrigerator (93a), the first refrigerator (91a) is arranged outside the first expansion chamber (12a) The second refrigerator (92a) is arranged outside the second expansion chamber (13a), and the third refrigerator (93a) is arranged outside the third expansion chamber (14a).

Please refer to the fourth figure. The Stirling refrigerator in the third embodiment of the present invention that generates a phase difference between plural displacers includes: a cylinder (1b), a first displacer (2b), and a second Displacer (3b), a piston and a linkage assembly. The cylinder (1b) has a first compression chamber (11b), a second compression chamber (12b) and an expansion chamber (13b), the expansion chamber is located in the first compression chamber (11a) and the second compression chamber ( Between 12b), the first compression chamber (11b), the second compression chamber (12b) and the expansion chamber (13b) communicate with each other. The first displacer (2b) is placed in the expansion chamber (13b), and the first displacer (2b) has a first regenerator (21b) arranged in the center. The second displacer (3b) is placed in the expansion chamber (13b), and the second displacer (3b) has a second regenerator (31b) Set in the center. The piston has a first piston (41b) and a second piston (42b), the first piston (41b) is placed in the first compression chamber (11b), and the second piston (42b) is placed in the second compression chamber (12b). The interlocking component has a first interlocking component (51b) and a second interlocking component (52b), the first interlocking component (51b) is connected to the first piston (41b), and the second interlocking component (52b) is connected to the second Piston (42b), the first linkage assembly (51b) drives the first piston (41b) and displaces the first displacer (2b) in the expansion chamber (13b), and the second linkage assembly (52b) Drive the second piston (42b), and make the second displacer (3b) displace in the expansion chamber (13b), and the first displacer (2b) and the second displacer (3b) The displacement has a phase difference.

Referring to the first and second figures, in the first embodiment, the phase difference between the first displacer (2) and the second displacer (3) can be preset. Or in the second embodiment, the elastic member (61) and the damping (62) of the phase adjustment unit (6) can be used to control the first displacer (2) and the second displacer (3) The phase difference between. When the linkage assembly (5) drives the piston (4) to raise the piston (4) into the compression chamber (11), the piston (4) compresses the working fluid. At this time, the compression chamber (11) is filled with hot air. The first displacer (2) rises, the second displacer (3) descends, the first expansion chamber (12) is cooled by a first refrigerator (7), and the second expansion chamber (13) By cooling by a second refrigerator (8), the first expansion chamber (12) and the second expansion chamber (13) are both cold air, and the first displacer (2) and the second displacer The aerator (3) is connected to the phase adjustment unit (6), and the phase angle of the first displacer (2) is adjusted by the phase adjustment unit (6) so that the first displacer (2) and the second The displacer (3) controls the phase difference, part of the working fluid in the first expansion chamber (12) is heated by the first regenerator (21) and flows into the compression chamber (11), and part of the working fluid passes through the second After cooling, the regenerator (31) flows into the second expansion chamber (13). The piston (4) compresses the compression chamber (11) to form a first compression. Then, the compression chamber (11) and the first The temperature difference of the expansion chamber (12) forms a second compression, and finally is cooled with the second expansion chamber (13), and the freezing effect is achieved through the second compression.

Referring to the third figure, in the third embodiment, the complex shifter can also be controlled by a phase adjustment unit to control the phase difference between the two. Wherein, the operation mode of the Stirling refrigerator in the third embodiment is the same as that of the aforementioned first and second embodiments, and will not be repeated here.

Referring to the fourth figure, in the fourth embodiment, the phase difference between the first displacer (2b) and the second displacer (3b) can also be preset. Wherein, the operation mode of the Stirling refrigerator in the fourth embodiment is the same as that of the aforementioned first and second embodiments, and will not be repeated here.

Please refer to the fifth figure to simulate the structure of the Stirling refrigerator in the first embodiment, and use Matlab to write a program to calculate and simulate to explore how the second displacer (3) leads the first displacer (2) The effect of phase angle on the equilibrium temperature of each chamber. It can be found from the figure that when the phase difference is minus 50 degrees to 75 degrees, the temperature of the second expansion chamber (13) is lower than that of the first expansion chamber (12), and when the phase difference is minus 10 degrees, the second expansion chamber (12) The expansion chamber (13) will have a minimum temperature of 131.15K, and at 10 degrees, the first expansion chamber (12) will have a maximum temperature of about 202K, and at minus 10 degrees, the second expansion chamber (13) and the first An expansion chamber (12) has the highest phase difference in temperature.

Based on the description of the above-mentioned embodiments, when one can fully understand the operation and use of the present invention and the effects of the present invention, the above-mentioned embodiments are only preferred embodiments of the present invention, and the implementation of the present invention cannot be limited by this. The scope, that is, simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the description of the invention, are all within the scope of the present invention.

(1): Cylinder

(11): Compression chamber

(12): The first expansion chamber

(13): Second expansion chamber

(2): The first mover

(21): The first regenerator

(3): Second mover

(31): Second regenerator

(4): Piston

(5): Linkage components

(7): The first refrigerator

(8): The second cooler

Claims (8)

A Stirling refrigerator that generates a phase difference between a plurality of air displacers, comprising: a cylinder, a compression chamber and a plurality of successively adjacent expansion chambers are separated, and the adjacent expansion chambers communicate with each other, and An expansion chamber is connected to the compression chamber; a plurality of displacers are respectively placed in one of the expansion chambers; a plurality of refrigerators are respectively arranged in the plurality of expansion chambers; a piston is placed in the compression chamber; a linkage assembly is connected to the piston, The linkage assembly drives the piston to displace in the compression chamber to compress a working fluid, and causes each displacer to displace in the corresponding expansion chamber, and there is a phase difference between displacers in adjacent expansion chambers. The Stirling refrigerator that produces a phase difference between plural displacers as described in the first item of the scope of patent application, wherein the expansion chamber includes a first expansion chamber and a second expansion chamber, and the compression chamber communicates with the A first expansion chamber, the first expansion chamber is connected to the second expansion chamber; the above-mentioned displacer includes a first displacer placed in the first expansion chamber, and a second displacer placed in the second expansion chamber . The Stirling refrigerator that produces a phase difference between plural displacers as described in the first item of the scope of patent application, wherein at least one phase adjustment unit is connected between two adjacent displacers. As described in item 3 of the scope of patent application, the Stirling refrigerator that generates a phase difference between a plurality of displacers, wherein the phase adjustment unit includes an elastic member and a damping. As described in the first item of the scope of patent application, the Stirling refrigerator that produces a phase difference between plural displacers, wherein a regenerator is arranged in the center of the displacer. As described in item 1 of the scope of patent application, the Stirling refrigerator that produces a phase difference between plural displacers, wherein the linkage component is a crank transmission mechanism, a swash plate transmission mechanism, a diamond transmission mechanism, Any one or a combination of a Ross transmission mechanism, an elastic element or a magnetic conductive part. The Stirling refrigerator that produces a phase difference between plural displacers as described in the first item of the scope of patent application, wherein the phase difference between adjacent displacers ranges from minus 50 degrees to 75 degrees between. A Stirling refrigerator that generates a phase difference between a plurality of air shifters, including: a cylinder, a first compression chamber, a second compression chamber, and an expansion chamber located in the first compression chamber and the second compression chamber Between the chambers, the first compression chamber, the second compression chamber and the expansion chamber communicate with each other; a first displacer is placed in the expansion chamber; a second displacer is placed in the expansion chamber; a piston , A first piston and a second piston, the first piston is placed in the first compression chamber, the second piston is placed in the second compression; a linkage assembly, the linkage assembly has a first linkage assembly and a second A linkage assembly, the first linkage assembly is connected to the first piston, the second linkage assembly is connected to the second piston, the first linkage assembly drives the first piston and displaces the first displacer in the expansion chamber, The second linkage assembly drives the second piston and causes the second displacer to displace in the expansion chamber, and the displacements of the first displacer and the second displacer have a phase difference.

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