Multi-channel free space isolator

Abstract

The invention relates to the technical field of optical elements, in particular to a multi-channel free space isolator which comprises a multi-channel free space isolator body. The device further comprises a mounting assembly. The mounting assembly comprises a mounting seat, two fastening mechanisms, two elastic ejector rods, a cold head, a cooling box, a refrigeration mechanism, a circulating water pump, a first hose, a second hose and a third hose; the cold head, the cooling box, the circulating water pump, the first hose, the second hose and the third hose form a circulating path, cooling liquid circularly flows in the circulating path under the action of the circulating water pump, the temperature of the cooling liquid is reduced by the refrigerating mechanism when the cooling liquid flows through the cooling box, and then the cooling liquid is cooled by the refrigerating mechanism when the low-temperature cooling liquid flows through the cold head. The cold head exchanges heat with the multi-channel free space isolator body to take away the heat of the multi-channel free space isolator body, so that the temperature can be reduced in time during heating, and the influence on the performance is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of optical elements, and in particular to a multi-channel free space isolator. Background Art

[0002] Free-space isolators are key components used in optical communications and optical systems, primarily preventing reflections, interference, or loss during optical signal transmission. They ensure that light propagates in only one direction by transmitting optical signals unidirectionally, thus protecting lasers and other optical components from damage caused by reverse light.

[0003] Prior art (CN221860777U) discloses an array collimator, a multi-channel free-space isolator, and a manufacturing method. The collimator includes an optical fiber array, a glass substrate, and a microlens array. The microlens array is fixedly mounted on the glass substrate. The glass substrate is mounted on the optical fiber array. The optical fiber array is connected to an optical fiber, and the optical fiber and the glass substrate are arranged correspondingly. The isolator includes two array collimators and a free-space isolator as described above. The two array collimators are arranged opposite to each other, and the free-space isolator is arranged between the two array collimators. The present invention has a small size, high coupling efficiency, and high reverse isolation. It can realize multi-channel array coupling, can be customized, and can achieve high-precision positioning.

[0004] However, when using the above method in a high-power laser system, the multi-channel free-space isolator will generate heat, which will affect its own performance. Summary of the Invention

[0005] The object of the present invention is to provide a multi-channel free space isolator which can reduce the temperature in time when heating to avoid affecting the performance.

[0006] To achieve the above object, the present invention provides a multi-channel free space isolator, comprising a multi-channel free space isolator body;

[0007] Also includes installation components;

[0008] The mounting assembly includes a mounting base, two fastening mechanisms, two elastic ejector rods, a cold head, a cooling box, a refrigeration mechanism, a circulating water pump, a first hose, a second hose, and a third hose;

[0009] The mounting seat has an inner cavity and a mounting groove; the multi-channel free space isolator body is located in the mounting groove; the two fastening mechanisms are respectively arranged on the front and rear sides of the mounting seat, for fastening the multi-channel free space isolator body; the two elastic ejector rods are respectively fixedly arranged in the inner cavity; the cold head is fixedly arranged on the top of the two elastic ejector rods and abuts against the bottom of the multi-channel free space isolator body;

[0010] The cooling box is fixedly arranged at the bottom of the mounting base; the refrigeration mechanism is arranged at the bottom of the cooling box; the circulating water pump is fixedly arranged on one side of the mounting base; one end of the first hose is connected to the cooling box, and the other end is connected to the circulating water pump; one end of the second hose is connected to the circulating water pump, and the other end is connected to the cold head; one end of the third hose is connected to the cooling box, and the other end is connected to the cold head.

[0011] The mounting seat further has two mounting cavities; the fastening mechanism includes two buckle frames, two sliders, two locking rods, two first springs and a pusher;

[0012] The two buckles are respectively rotatably arranged on one side of the mounting seat; the buckle has a lock hole; the two sliders are respectively slidably arranged in the mounting cavity; the slider has an inclined surface; the two locking rods are respectively fixedly connected to the two sliders, and are respectively slidably connected to the mounting seat, and are respectively located in the mounting cavity; the two first springs are respectively sleeved on the two locking rods; the pushing member is arranged on the mounting seat, and is used to push the two sliders away from each other.

[0013] Wherein, the pushing member includes an extrusion block, a screw and a knob;

[0014] The extrusion block is slidably arranged in the mounting cavity and is located between the two sliders; the screw is rotatably connected to the extrusion block and is threadedly connected to the mounting seat and is located at the top of the extrusion block; the knob is fixedly arranged on the top of the screw.

[0015] Wherein, the elastic push rod includes a sleeve, a sliding rod and a second spring;

[0016] The sleeve is fixedly arranged in the inner cavity; the sliding rod is slidably arranged in the sleeve and fixedly connected to the cold head; the second spring is sleeved on the sleeve.

[0017] Wherein, the cold head comprises a first shell, a first heat conducting plate and a plurality of heat conducting baffles;

[0018] The first shell is fixedly arranged on the top of the two sliding rods and is connected to the second hose and the third hose respectively; the first heat conducting plate is fixedly arranged on the top of the first shell; and the plurality of heat conducting partitions are fixedly arranged between the first shell and the first heat conducting plate respectively.

[0019] Wherein, the cooling box comprises a second shell and a second heat conducting plate;

[0020] The second shell is fixedly arranged at the bottom of the mounting seat and is communicated with the first hose and the third hose respectively; the second heat conducting plate is fixedly arranged at the bottom of the second shell.

[0021] Wherein, the refrigeration mechanism includes two semiconductor refrigeration plates and heat dissipation fins;

[0022] The two semiconductor refrigeration fins are respectively fixedly arranged on the bottom of the second heat conducting plate; and the heat dissipation fins are fixedly arranged on the bottom of the two semiconductor refrigeration fins.

[0023] Wherein, the refrigeration mechanism further includes a bracket and two cooling fans;

[0024] The bracket is fixedly arranged at the bottom of the mounting base; and the two cooling fans are respectively fixedly arranged on the bracket.

[0025] Wherein, the mounting assembly further comprises a plurality of legs and a base;

[0026] The plurality of legs are fixedly arranged at the bottom of the mounting seat respectively; the base is fixedly arranged at the bottom of the plurality of legs.

[0027] Wherein, the mounting assembly further comprises a plurality of mounting feet;

[0028] The plurality of mounting feet are respectively fixedly arranged on the sides of the base.

[0029] The present invention provides a multi-channel free space isolator, wherein the mounting groove is used to install the multi-channel free space isolator body; the two fastening mechanisms are used to fasten the multi-channel free space isolator body in the mounting groove; the two elastic top rods are used to apply an upward elastic force to the cold head so that the cold head is tightly against the bottom of the multi-channel free space isolator body; the cold head, the cooling box, the circulating water pump, the first hose, the second hose and the third hose form a circulation path, and under the action of the circulating water pump, coolant circulates inside, and the temperature of the coolant is reduced by the refrigeration mechanism when flowing through the cooling box, and then the low-temperature coolant exchanges heat with the multi-channel free space isolator body through the cold head when flowing through the cold head, and takes away the heat of the multi-channel free space isolator body, so that the temperature can be reduced in time when heat is generated to avoid affecting the performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0031] Figure 1 It is a structural schematic diagram of the present invention.

[0032] Figure 2 It is a right side view of the present invention.

[0033] Figure 3 yes Figure 2 Cross-sectional view along the AA direction.

[0034] Figure 4 yes Figure 2 Cross-sectional view along direction BB.

[0035] Figure 5 yes Figure 4 A partial enlargement of detail A.

[0036] Figure 6 yes Figure 4 A partial enlargement of detail B.

[0037] Figure 7 It is a structural schematic diagram of the first shell and the heat-conducting partition of the present invention.

[0038] 1- multi-channel free space isolator body, 2- mounting seat, 3- fastening mechanism, 4- elastic ejector, 5- cold head, 6- cooling box, 7- refrigeration mechanism, 8- circulating water pump, 9- first hose, 10- second hose, 11- third hose, 12- support foot, 13- base, 14- mounting foot, 21- inner cavity, 22- mounting groove, 23- mounting cavity, 31- buckle frame, 32- slider, 33- locking rod, 34- first spring, 35- pushing member, 311- locking hole, 321- inclined plane, 351- extrusion block, 352- screw, 353- knob, 41- sleeve, 42- slide rod, 43- second spring, 51- first shell, 52- first heat conduction plate, 53- heat conduction baffle, 61- second shell, 62- second heat conduction plate, 71- semiconductor refrigeration plate, 72- heat sink fin, 73- bracket, 74- cooling fan. DETAILED DESCRIPTION

[0039] See also Figure 1-Figure 7 ,in, Figure 1 It is a structural schematic diagram of the present invention. Figure 2 It is a right side view of the present invention. Figure 3 yes Figure 2 Cross-sectional view along the AA direction. Figure 4 yes Figure 2 Cross-sectional view along direction BB. Figure 5 yes Figure 4 A partial enlarged view of detail A. 6 is Figure 4 A partial enlargement of detail B. Figure 7 It is a structural schematic diagram of the first shell and the heat-conducting partition of the present invention.

[0040] The present invention provides a multi-channel free space isolator: comprising a multi-channel free space isolator body 1; further comprising a mounting assembly; the mounting assembly comprises a mounting seat 2, two fastening mechanisms 3, two elastic ejector rods 4, a cold head 5, a cooling box 6, a refrigeration mechanism 7, a circulating water pump 8, a first hose 9, a second hose 10 and a third hose 11; the mounting seat 2 has an inner cavity 21 and a mounting groove 22; the mounting seat 2 also has two mounting cavities 23; the fastening mechanism 3 comprises two buckle frames 31, two sliders 32, two locking rods 33, two first springs 34 and a pushing member 35; the buckle frame 31 has a locking hole 311; the slider 32 has an inclined surface 321; The pushing member 35 includes an extrusion block 351, a screw 352 and a knob 353; the elastic top rod 4 includes a sleeve 41, a slide rod 42 and a second spring 43; the cold head 5 includes a first shell 51, a first heat conduction plate 52 and a plurality of heat conduction partitions 53; the cooling box 6 includes a second shell 61 and a second heat conduction plate 62; the refrigeration mechanism 7 includes two semiconductor refrigeration plates 71 and heat dissipation fins 72; the refrigeration mechanism 7 also includes a bracket 73 and two cooling fans 74; the mounting assembly also includes a plurality of legs 12 and a base 13; the mounting assembly also includes a plurality of mounting feet 14; through the above-mentioned scheme, the temperature can be reduced in time when heat is generated to avoid affecting the performance.

[0041] Furthermore, the mounting base 2 has an inner cavity 21 and a mounting groove 22; the multi-channel free space isolator body 1 is located in the mounting groove 22; the two fastening mechanisms 3 are respectively provided on the front and rear sides of the mounting base 2, for fastening the multi-channel free space isolator body 1; the two elastic ejector rods 4 are respectively fixedly provided in the inner cavity 21; the cold head 5 is fixedly provided on the top of the two elastic ejector rods 4 and abuts against the bottom of the multi-channel free space isolator body 1;

[0042] The cooling box 6 is fixedly arranged at the bottom of the mounting base 2; the refrigeration mechanism 7 is arranged at the bottom of the cooling box 6; the circulating water pump 8 is fixedly arranged on one side of the mounting base 2; one end of the first hose 9 is connected to the cooling box 6, and the other end is connected to the circulating water pump 8; one end of the second hose 10 is connected to the circulating water pump 8, and the other end is connected to the cold head 5; one end of the third hose 11 is connected to the cooling box 6, and the other end is connected to the cold head 5.

[0043] In this embodiment, the mounting groove 22 is used to install the multi-channel free space isolator body 1; the two fastening mechanisms 3 are used to fasten the multi-channel free space isolator body 1 in the mounting groove 22; the two elastic push rods 4 are used to apply an upward elastic force to the cold head 5, so that the cold head 5 is tightly against the bottom of the multi-channel free space isolator body 1; the cold head 5, the cooling box 6, the circulating water pump 8, the first hose 9, the second hose 10 and the third hose 11 form a circulation path. Under the action of the circulating water pump 8, coolant circulates inside. When the coolant flows through the cooling box 6, the temperature is lowered by the refrigeration mechanism 7. Then, when the low-temperature coolant flows through the cold head 5, it exchanges heat with the multi-channel free space isolator body 1 through the cold head 5, and takes away the heat of the multi-channel free space isolator body 1, so that the temperature can be reduced in time when heat is generated to avoid affecting the performance.

[0044] Furthermore, the mounting base 2 also has two mounting cavities 23; the fastening mechanism 3 includes two fastening frames 31, two sliders 32, two locking rods 33, two first springs 34 and a pushing member 35;

[0045] The two buckles 31 are respectively rotatably arranged on one side of the mounting base 2; the buckle 31 has a locking hole 311; the two sliders 32 are respectively slidably arranged in the mounting cavity 23; the slider 32 has an inclined surface 321; the two locking rods 33 are respectively fixedly connected to the two sliders 32, and are respectively slidably connected to the mounting base 2, and are respectively located in the mounting cavity 23; the two first springs 34 are respectively sleeved on the two locking rods 33; the pushing member 35 is arranged on the mounting base 2, and is used to push the two sliders 32 away from each other.

[0046] In this embodiment, after the two buckle frames 31 are rotated to buckle the multi-channel free space isolator body 1, the pushing member 35 is used to simultaneously push the two sliders 32 away from each other, and the two sliders 32 drive the two locking rods 33 to respectively insert into the locking holes 311 of the two buckle frames 31, thereby locking the two buckle frames 31.

[0047] Furthermore, the pushing member 35 includes an extrusion block 351 , a screw 352 and a knob 353 ;

[0048] The extrusion block 351 is slidably arranged in the mounting cavity 23 and is located between the two sliders 32; the screw 352 is rotatably connected to the extrusion block 351 and is threadedly connected to the mounting seat 2 and is located at the top of the extrusion block 351; the knob 353 is fixedly arranged on the top of the screw 352.

[0049] In this embodiment, by twisting the knob 353 and rotating the screw 352, the extrusion block 351 can be driven to slide up and down; when the extrusion block 351 moves downward, it pushes the slider 32 along the inclined surface 321, thereby pushing the two sliders 32 away from each other, and the two sliders 32 drive the two locking rods 33 to respectively insert into the locking holes 311 of the two buckle frames 31, locking the two buckle frames 31, and at this time, the two first springs 34 are in a compressed state; when the extrusion block 351 moves upward, under the action of the two first springs 34, the two sliders 32 gradually approach each other, driving the two locking rods 33 to withdraw from the corresponding locking holes 311, retracting into the mounting cavity 23, and no longer locking the two buckle frames 31.

[0050] Furthermore, the elastic push rod 4 includes a sleeve 41, a slide rod 42 and a second spring 43;

[0051] The sleeve 41 is fixedly disposed in the inner cavity 21 ; the sliding rod 42 is slidably disposed in the sleeve 41 and is fixedly connected to the cold head 5 ; and the second spring 43 is sleeved on the sleeve 41 .

[0052] In this embodiment, the sleeve 41 and the slide rod 42 form a telescopic rod to support the cold head 5, and the second spring 43 provides elastic force. When the multi-channel free space isolator body 1 is placed in the mounting groove 22, the cold head 5 will be pressed down. The cold head 5 presses down the second spring 43, and the second spring 43 will give the cold head 5 an upward elastic force, so that the cold head 5 is tightly pressed against the bottom of the multi-channel free space isolator body 1, ensuring good contact and effective heat exchange.

[0053] Furthermore, the cold head 5 includes a first shell 51, a first heat conducting plate 52 and a plurality of heat conducting partitions 53;

[0054] The first shell 51 is fixedly arranged on the top of the two sliding rods 42 and is respectively connected to the second hose 10 and the third hose 11; the first heat conducting plate 52 is fixedly arranged on the top of the first shell 51; and the plurality of heat conducting baffles 53 are respectively fixedly arranged between the first shell 51 and the first heat conducting plate 52.

[0055] In this embodiment, the first shell 51 and the first heat conducting plate 52 form a closed cavity, and the multiple heat conducting baffles 53 divide the closed cavity into a winding channel. When the coolant flows through the winding channel, it effectively exchanges heat with the multi-channel free space isolator body 1 through the first heat conducting plate 52 and the multiple heat conducting baffles 53.

[0056] Furthermore, the cooling box 6 includes a second shell 61 and a second heat conducting plate 62;

[0057] The second shell 61 is fixedly disposed at the bottom of the mounting base 2 and is communicated with the first hose 9 and the third hose 11 respectively; the second heat conducting plate 62 is fixedly disposed at the bottom of the second shell 61 .

[0058] In this embodiment, the second shell 61 and the second heat conducting plate 62 form a sealed cavity, and the refrigeration mechanism 7 exchanges heat with the coolant flowing through the second heat conducting plate 62 to cool the coolant.

[0059] Furthermore, the refrigeration mechanism 7 includes two semiconductor refrigeration sheets 71 and heat dissipation fins 72;

[0060] The two semiconductor refrigeration fins 71 are respectively fixedly arranged at the bottom of the second heat conducting plate 62 ; the heat dissipation fins 72 are fixedly arranged at the bottom of the two semiconductor refrigeration fins 71 .

[0061] In this embodiment, the cold end of the semiconductor refrigeration plate 71 contacts the second heat conducting plate 62, and heat is exchanged with the coolant flowing through the second heat conducting plate 62 to cool the coolant; the heat dissipation fins 72 contact the hot end of the semiconductor refrigeration plate 71 to dissipate heat into the air.

[0062] Furthermore, the refrigeration mechanism 7 further includes a bracket 73 and two cooling fans 74;

[0063] The bracket 73 is fixedly arranged at the bottom of the mounting base 2 ; the two cooling fans 74 are respectively fixedly arranged on the bracket 73 .

[0064] In this embodiment, the bracket 73 supports the two cooling fans 74 to blow air toward the cooling fins 72 , thereby accelerating air circulation and improving the cooling performance of the cooling fins 72 .

[0065] Furthermore, the mounting assembly further includes a plurality of legs 12 and a base 13;

[0066] The plurality of legs 12 are fixedly disposed on the bottom of the mounting base 2 ; the base 13 is fixedly disposed on the bottom of the plurality of legs 12 .

[0067] In this embodiment, the base 13 cooperates with the plurality of legs 12 to support the mounting base 2, leaving a certain space at the bottom of the two cooling fans 74 to facilitate air intake;

[0068] Furthermore, the mounting assembly further includes a plurality of mounting feet 14;

[0069] The plurality of mounting feet 14 are respectively fixedly disposed on the sides of the base 13 .

[0070] In this embodiment, the mounting bracket is used to install screws and other connectors to facilitate fixing the base 13 at a desired installation position.

[0071] The multi-channel free space isolator described in this embodiment, the mounting groove 22 is used to mount the multi-channel free space isolator body 1; the two fastening mechanisms 3 are used to fasten the multi-channel free space isolator body 1 in the mounting groove 22; the two elastic push rods 4 are used to apply an upward elastic force to the cold head 5, so that the cold head 5 is tightly against the bottom of the multi-channel free space isolator body 1; the cold head 5, the cooling box 6, the circulating water pump 8, the first hose 9, the second hose 10 and the third hose 11 form a circulation path, under the action of the circulating water pump 8, coolant circulates inside, and when the coolant flows through the cooling box 6, the temperature of the coolant is lowered by the refrigeration mechanism 7, and then when the low-temperature coolant flows through the cold head 5, it exchanges heat with the multi-channel free space isolator body 1 through the cold head 5, and takes away the heat of the multi-channel free space isolator body 1, so that the temperature can be reduced in time when heat is generated to avoid affecting the performance.

[0072] The above disclosure is merely one or more preferred embodiments of the present application and is not intended to limit the scope of the present application. A person skilled in the art will understand that all or part of the processes of the above embodiments and equivalent changes made in accordance with the claims of the present application are still within the scope of the present application.

Claims

1. A multi-channel free space isolator, comprising a multi-channel free space isolator body; characterized in that: Also included are installation components; The mounting assembly includes a mounting base, two fastening mechanisms, two elastic ejector rods, a cold head, a cooling box, a refrigeration mechanism, a circulating water pump, a first hose, a second hose, and a third hose; The mounting seat has an inner cavity and a mounting groove; the multi-channel free space isolator body is located in the mounting groove; the two fastening mechanisms are respectively arranged on the front and rear sides of the mounting seat, for fastening the multi-channel free space isolator body; the two elastic ejector rods are respectively fixedly arranged in the inner cavity; the cold head is fixedly arranged on the top of the two elastic ejector rods and abuts against the bottom of the multi-channel free space isolator body; The cooling box is fixedly arranged at the bottom of the mounting base; the refrigeration mechanism is arranged at the bottom of the cooling box; the circulating water pump is fixedly arranged on one side of the mounting base; one end of the first hose is connected to the cooling box, and the other end is connected to the circulating water pump; one end of the second hose is connected to the circulating water pump, and the other end is connected to the cold head; one end of the third hose is connected to the cooling box, and the other end is connected to the cold head.

2. A multi-channel free space isolator according to claim 1, characterized in that: The mounting seat also has two mounting cavities; the fastening mechanism includes two buckle frames, two sliders, two locking rods, two first springs and a pushing member; The two buckles are respectively rotatably arranged on one side of the mounting seat; the buckle has a lock hole; the two sliders are respectively slidably arranged in the mounting cavity; the slider has an inclined surface; the two locking rods are respectively fixedly connected to the two sliders, and are respectively slidably connected to the mounting seat, and are respectively located in the mounting cavity; the two first springs are respectively sleeved on the two locking rods; the pushing member is arranged on the mounting seat, and is used to push the two sliders away from each other.

3. A multi-channel free space isolator according to claim 2, characterized in that: The pushing member includes an extrusion block, a screw and a knob; The extrusion block is slidably arranged in the mounting cavity and is located between the two sliders; the screw is rotatably connected to the extrusion block and is threadedly connected to the mounting seat and is located at the top of the extrusion block; the knob is fixedly arranged on the top of the screw.

4. A multi-channel free space isolator according to claim 3, characterized in that: The elastic push rod includes a sleeve, a slide rod and a second spring; The sleeve is fixedly arranged in the inner cavity; the sliding rod is slidably arranged in the sleeve and fixedly connected to the cold head; the second spring is sleeved on the sleeve.

5. A multi-channel free space isolator according to claim 4, characterized in that: The cold head includes a first shell, a first heat conducting plate and a plurality of heat conducting baffles; The first shell is fixedly arranged on the top of the two sliding rods and is connected to the second hose and the third hose respectively; the first heat conducting plate is fixedly arranged on the top of the first shell; and the plurality of heat conducting partitions are fixedly arranged between the first shell and the first heat conducting plate respectively.

6. A multi-channel free space isolator according to claim 5, characterized in that: The cooling box includes a second shell and a second heat conducting plate; The second shell is fixedly arranged at the bottom of the mounting seat and is communicated with the first hose and the third hose respectively; the second heat conducting plate is fixedly arranged at the bottom of the second shell.

7. A multi-channel free space isolator according to claim 6, characterized in that: The refrigeration mechanism includes two semiconductor refrigeration plates and heat dissipation fins; The two semiconductor refrigeration fins are respectively fixedly arranged on the bottom of the second heat conducting plate; and the heat dissipation fins are fixedly arranged on the bottom of the two semiconductor refrigeration fins.

8. A multi-channel free space isolator according to claim 7, characterized in that: The refrigeration mechanism also includes a bracket and two cooling fans; The bracket is fixedly arranged at the bottom of the mounting base; and the two cooling fans are respectively fixedly arranged on the bracket.

9. A multi-channel free space isolator according to claim 8, characterized in that: The mounting assembly further includes a plurality of legs and a base; The plurality of legs are fixedly arranged at the bottom of the mounting seat respectively; the base is fixedly arranged at the bottom of the plurality of legs.

10. The multi-channel free space isolator according to claim 9, wherein: The mounting assembly further includes a plurality of mounting feet; The plurality of mounting feet are respectively fixedly arranged on the sides of the base.

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