Intelligent heat dissipation extinguishing device of electromagnetic induction's POE switch

文档序号:750548 发布日期:2021-04-02 浏览:7次 中文

阅读说明:本技术 一种电磁感应的poe交换机智能化散热灭火装置 (Intelligent heat dissipation extinguishing device of electromagnetic induction's POE switch ) 是由 汪达 于 2020-12-21 设计创作,主要内容包括:本发明涉及计算机辅助设备技术领域,且公开了一种电磁感应的POE交换机智能化散热灭火装置,包括外壳,所述外壳的内部活动连接有转轴一,转轴一的外部固定连接有转盘,转盘的外部固定连接有短杆,短杆的外部活动连接有滑板,滑板的内侧固定连接有固定板,固定板的内部固定连接有N极,固定板的内部固定连接有S极,固定板的内部活动连接有连接杆;通过固定板、N极、S极、连接杆、双金属条、棘轮、卡杆和开关组件之间的相互作用,能够在内部设备或者接线处由于高温起火燃烧时,使得散热组件停止运行,进而开关组件打开,对起火点进行扑灭,避免其他设备硬件被火点燃,进而烧毁更多的设备,造成严重的后果。(The invention relates to the technical field of computer auxiliary equipment and discloses an electromagnetic induction POE switch intelligent heat dissipation fire extinguishing device which comprises a shell, wherein the inner part of the shell is movably connected with a first rotating shaft, the outer part of the first rotating shaft is fixedly connected with a rotating disc, the outer part of the rotating disc is fixedly connected with a short rod, the outer part of the short rod is movably connected with a sliding plate, the inner side of the sliding plate is fixedly connected with a fixed plate, the inner part of the fixed plate is fixedly connected with an N pole, the inner part of the fixed plate is fixedly connected with an S pole, and the inner part of; through the mutual action between fixed plate, the N utmost point, the S utmost point, connecting rod, bimetal strip, ratchet, kelly and the switch module, can be in inside equipment or wiring department when the burning because high temperature is on fire for radiator unit shut down, and then the switch module is opened, puts out the ignition point, avoids other equipment hardware to be lighted by the fire, and then burns out more equipment, causes serious consequence.)

1. The utility model provides an intelligent heat dissipation extinguishing device of electromagnetic induction's POE switch, includes shell (1), its characterized in that: the inner part of the shell (1) is movably connected with a first rotating shaft (2), the outer part of the first rotating shaft (2) is fixedly connected with a rotating disc (3), the outer part of the rotating disc (3) is fixedly connected with a short rod (4), the outer part of the short rod (4) is movably connected with a sliding plate (5), the inner side of the sliding plate (5) is fixedly connected with a fixed plate (6), the inner part of the fixed plate (6) is fixedly connected with an N pole (7), the inner part of the fixed plate (6) is fixedly connected with an S pole (8), the inner part of the fixed plate (6) is movably connected with a connecting rod (9), the inner part of the fixed plate (6) is fixedly connected with a double metal strip (10), the outer part of the fixed plate (6) is fixedly connected with a first shell (11), the inner part of the first shell (11) is movably connected with a second rotating shaft (, the switch component (15) is movably connected to the outer portion of the fixing plate (6), the rotating shaft III (16) is movably connected to the inner portion of the shell (1), the gear (17) is fixedly connected to the outer portion of the rotating shaft III (16), the stop lever (18) is fixedly connected to the outer portion of the gear (17), the connecting rod I (19) is movably connected to the outer portion of the stop lever (18), and the connecting rod II (20) is movably connected to the outer portion of the connecting rod I (19).

2. The intelligent heat dissipation and fire extinguishing device for the POE switch based on electromagnetic induction as claimed in claim 1, wherein: specification and position phase-match of N utmost point (7) and S utmost point (8), specification phase-match and the position of connecting rod (9) and bimetal strip (10) are corresponding, the outside swing joint of connecting rod (9) has spring one, the inside at fixed plate (6) is kept away from the one end fixed connection of connecting rod (9) to spring one, the outside fixedly connected with bar copper of connecting rod (9), the specification phase-match of bar copper and N utmost point (7) and S utmost point (8), single N utmost point (7), S utmost point (8), connecting rod (9), an electromagnetic induction subassembly is constituteed to the bar copper, the inside symmetric distribution of fixed plate (6) has four electromagnetic induction subassemblies, bimetal strip (10) adopt two kinds of different thermal expansion coefficients and have the metal material of suitable performance, the specification phase-match of bimetal strip (10) and connecting rod (9).

3. The intelligent heat dissipation and fire extinguishing device for the POE switch based on electromagnetic induction as claimed in claim 1, wherein: the inside of slide (5) is seted up flutedly, and the both sides of recess all are provided with tooth, and quarter butt (4) have six equal angular distributions in the outside of carousel (3), and the specification phase-match and the position of quarter butt (4) and tooth are corresponding, and fixed plate (6) fixed connection is in the inboard of recess, and the spout has been seted up to the inboard of shell (1), and slide (5) sliding connection is in the inboard of spout.

4. The intelligent heat dissipation and fire extinguishing device for the POE switch based on electromagnetic induction as claimed in claim 1, wherein: the specification phase-match of kelly (14) and ratchet (13), the inside fixedly connected with iron plate of kelly (14), the inside fixedly connected with electro-magnet of casing (11) is first, electro-magnet is first and the specification phase-match of iron plate and the position is corresponding, the outside fixedly connected with spring two of kelly (14), the one end fixed connection that kelly (14) were kept away from to spring two is in the outside of electro-magnet one, the outside fixedly connected with flabellum of pivot two (12), single casing (11), pivot two (12), ratchet (13), a radiator unit is constituteed in kelly (14), fixed plate (6), connecting rod one (19), the outside of connecting rod two (20) all is provided with radiator unit.

5. The intelligent heat dissipation and fire extinguishing device for the POE switch based on electromagnetic induction as claimed in claim 1, wherein: switch module (15) mainly by casing two, the bottom plate, the movable block, electro-magnet two, three constitutions of spring, two fixed connection of casing are in the inside of fixed plate (6), the inside swing joint of casing two has the bottom plate, the outside swing joint of bottom plate has the movable block, the inside fixedly connected with iron plate of bottom plate, the specification phase-match and the position of electro-magnet two and iron plate are corresponding, the outside fixedly connected with spring three of bottom plate, the one end fixed connection that the bottom plate was kept away from to spring three is in the outside of electro-magnet, the inside symmetric distribution of fixed plate (6) has two switch module (15).

6. The intelligent heat dissipation and fire extinguishing device for the POE switch based on electromagnetic induction as claimed in claim 1, wherein: the utility model discloses a motor, including shell (1), gear (17), pin (18), connecting rod (19), runner, pin (18), connecting rod two, gear (17) have two, two gear (17) intermeshing, pin (18) have six and the distribution of equal angle in the outside of gear (17), the outside swing joint of connecting rod one (19) has the runner, the specification phase-match of runner and pin (18), the both ends of connecting rod one (19) all swing joint have connecting rod two (20), one end swing joint in the inside of shell (1) that connecting rod one (19) were kept away from to connecting rod two (20.

7. The intelligent heat dissipation and fire extinguishing device for the POE switch based on electromagnetic induction as claimed in claim 1, wherein: the motor is fixedly connected to the outer portion of the first rotating shaft (2), the motor, the first electromagnet and the second electromagnet are electrically connected with an external power supply, the second rotating shaft (12) and the third rotating shaft (16) are electrically connected with a driving power supply, and the copper bar, the external power supply and the driving power supply are electrically connected with the control center.

Technical Field

The invention relates to the technical field of computer auxiliary equipment, in particular to an electromagnetic induction POE switch intelligent heat dissipation fire extinguishing device.

Background

The computer auxiliary equipment comprises a network card, an integrator, a switch, a router, a digital video camera, a camera and the like, wherein a POE switch is used as one type of switch, and the POE switch refers to a technology which can provide direct current for IP terminals while transmitting data signals for the IP terminals under the condition that the existing Ethernet Cat.5 wiring infrastructure is not changed, and is a switch supporting Ethernet power supply.

The internal equipment of the existing switch can generate a large amount of heat in the using process, and the POE switch also supplies power to the terminal equipment, so that the heat generated inside the switch is more than that of a common switch, but the large amount of heat inside the switch can not be timely discharged to increase the temperature in the switch, so that the components in the switch are in a high-temperature state, the high temperature can reduce the working efficiency of the equipment inside the switch, the use experience of users is influenced, meanwhile, the high temperature can influence the service life of the components in the switch, the equipment inside the cabinet can be damaged, the internal equipment is easy to ignite and burn in a short circuit or due to the aging condition of a connector lug under the high-temperature environment, the equipment inside the cabinet can be burnt, economic loss is caused to an operator, and in long-term use, toxic chemical substances can be released due to aging or over-temperature of each component forming the switch, therefore, the machine room has a strange taste every time when the machine room enters, which causes harm to people working in the machine room for a long time and pollutes the environment.

Therefore, in order to solve the problems, the intelligent heat dissipation fire extinguishing device for the POE switch based on the electromagnetic induction is needed.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the intelligent heat-dissipation fire extinguishing device for the POE switch based on electromagnetic induction, which has the advantages of dissipating heat, ensuring normal operation of equipment and extinguishing fire when a fire breaks out, and solves the problems that the normal operation of the equipment is influenced and the fire disaster is caused due to short circuit or ageing of the equipment when the equipment inside a machine body is in a high-temperature environment because heat cannot be dissipated timely.

(II) technical scheme

In order to realize the heat dissipation, ensure the normal operation of equipment and realize the purpose of extinguishing fire when a fire breaks out, the invention provides the following technical scheme: an electromagnetic induction POE switch intelligent heat dissipation fire extinguishing device comprises a shell, wherein the inner part of the shell is movably connected with a first rotating shaft, the outer part of the first rotating shaft is fixedly connected with a turntable, the outer part of the turntable is fixedly connected with a short rod, the outer part of the short rod is movably connected with a sliding plate, the inner side of the sliding plate is fixedly connected with a fixed plate, the inner part of the fixed plate is fixedly connected with an N pole, the inner part of the fixed plate is fixedly connected with an S pole, the inner part of the fixed plate is movably connected with a connecting rod, the inner part of the fixed plate is fixedly connected with a double metal strip, the outer part of the fixed plate is fixedly connected with a first shell, the inner part of the first shell is movably connected with a second rotating shaft, the outer part of the second rotating shaft is fixedly connected with a, the outside of the gear is fixedly connected with a stop lever, the outside of the stop lever is movably connected with a first connecting rod, and the outside of the first connecting rod is movably connected with a second connecting rod.

Preferably, the specification and the position phase-match of N utmost point and S utmost point, the specification phase-match and the position of connecting rod and bimetal strip are corresponding, the outside swing joint of connecting rod has spring one, the one end fixed connection of connecting rod is kept away from in the inside of fixed plate to spring one, the outside fixedly connected with bar copper of connecting rod, the specification phase-match of bar copper and N utmost point and S utmost point, single N utmost point, S utmost point, the connecting rod, an electromagnetic induction subassembly is constituteed to the bar copper, the inside symmetric distribution of fixed plate has four electromagnetic induction subassemblies, bimetal strip adopts two kinds of different thermal expansion coefficients and has the metal material of suitable performance, the specification phase-match of bimetal strip and connecting rod.

Preferably, the inside of slide is seted up flutedly, and the both sides of recess all are provided with tooth, and the quarter butt has six equal angular distributions in the outside of carousel, and the specification phase-match and the position of quarter butt and tooth are corresponding, and fixed plate fixed connection is in the inboard of recess, and the spout has been seted up to the inboard of shell, and slide sliding connection is in the inboard of spout.

Preferably, the specification phase-match of kelly and ratchet, the inside fixedly connected with iron plate of kelly, the inside fixedly connected with electro-magnet of casing one, electro-magnet one and iron plate's specification phase-match and position are corresponding, the outside fixedly connected with spring two of kelly, the one end fixed connection that the kelly was kept away from to spring two is in the outside of electro-magnet one, the outside fixedly connected with flabellum of pivot two, single casing one, pivot two, a ratchet, a radiator unit is constituteed to the kelly, the fixed plate, connecting rod one, the outside of connecting rod two all is provided with radiator unit.

Preferably, the switch assembly mainly comprises a second shell, a bottom plate, a movable block, a second electromagnet and a third spring, the second shell is fixedly connected inside the fixed plate, the inside of the second shell is movably connected with the bottom plate, the outside of the bottom plate is movably connected with the movable block, the inside of the bottom plate is fixedly connected with an iron block, the second electromagnet is matched with the iron block in specification and corresponds to the iron block in position, the outside of the bottom plate is fixedly connected with the third spring, one end, away from the bottom plate, of the third spring is fixedly connected outside the electromagnet, two switch assemblies are symmetrically distributed inside the fixed plate, the surface of the second shell is provided with a chute, the movable block is distributed inside the second shell in six equal angles, the outside of the movable block is fixedly connected with a contact rod, the contact rod is slidably connected to the inner side of the chute, when the second electromagnet is electrified, the electromagnet attracts the iron block inside the bottom plate to further, the movable block moves to form a through hole in the second shell, dry powder is arranged in the fixed plate, and the dry powder can be sprinkled through the through hole in the second shell.

Preferably, the gear has two, two gear intermeshing, and the pin has six and the angular distribution such as in the outside of gear, and the outside swing joint of connecting rod one has the runner, the specification phase-match of runner and pin, and the both ends of connecting rod one all swing joint have connecting rod two, and the one end swing joint that connecting rod one was kept away from to connecting rod two is in the inside of shell, and the position of the outside pin of two gears is corresponding, and the runner can move under the outside pin effect of two gears, and then makes connecting rod one move.

Preferably, the motor is fixedly connected to the outer portion of the first rotating shaft, the motor, the first electromagnet and the second electromagnet are electrically connected with an external power supply, the second rotating shaft and the third rotating shaft are electrically connected with a driving power supply, and the copper rod, the external power supply and the driving power supply are electrically connected with the control center.

(III) advantageous effects

Compared with the prior art, the invention provides an electromagnetic induction POE switch intelligent heat dissipation fire extinguishing device, which has the following beneficial effects:

1. this intelligent heat dissipation extinguishing device of electromagnetic induction' S POE switch, through the fixed plate, the N utmost point, the S utmost point, the connecting rod, bimetal strip, the ratchet, the interact between kelly and the switch module, can be in internal plant or wiring department when the burning of starting a fire because high temperature for radiator unit stop operation, and then switch module opens, puts out to the point of starting a fire, avoids other equipment hardware to be lighted by the fire, and then burns out more equipment, causes serious consequence.

2. This intelligent heat dissipation extinguishing device of electromagnetic induction's POE switch, through so the interact between the structure, can make the inside heat of switch give off the outside, reduce the inside temperature of switch, make the inside hardware normal operating of switch, can charge for the terminal of some IP simultaneously, in inside equipment or wiring department when the burning of firing at a fire because high temperature, the point of fire of putting out that can be timely, avoid the intensity of a fire to enlarge and burn out more equipment, prevent that some subassemblies of switch from producing sharp smell under high temperature state, the influence is healthy at the personnel of computer lab work for a long time, this device accords with the theory that intelligent manufacturing.

Drawings

FIG. 1 is a schematic view of the connection relationship among a housing, a first rotating shaft, a sliding plate, a gear, a first connecting rod and a second connecting rod;

FIG. 2 is a schematic partial cross-sectional view of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2 according to the present invention;

FIG. 4 is an enlarged view of the invention at B of FIG. 2;

FIG. 5 is a schematic view of the connection relationship among the third rotating shaft, the gear, the stop lever, the first connecting rod and the second connecting rod;

FIG. 6 is a schematic view of the connection between the first housing, the second shaft, the ratchet and the clamping rod according to the present invention.

In the figure: 1. a housing; 2. a first rotating shaft; 3. a turntable; 4. a short bar; 5. a slide plate; 6. a fixing plate; 7. an N pole; 8. an S pole; 9. a connecting rod; 10. a bi-metal strip; 11. a first shell; 12. a second rotating shaft; 13. a ratchet wheel; 14. a clamping rod; 15. a switch assembly; 16. a rotating shaft III; 17. a gear; 18. a stop lever; 19. a first connecting rod; 20. and a second connecting rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The embodiments of the present invention, and all other embodiments obtained by a person of ordinary skill in the art without any inventive work, belong to the scope of protection of the present invention.

Referring to fig. 1-6, an electromagnetic induction POE switch intelligent heat dissipation fire extinguishing apparatus comprises a housing 1, wherein the inside of the housing 1 is movably connected with a first rotating shaft 2, the outside of the first rotating shaft 2 is fixedly connected with a rotating disc 3, the outside of the rotating disc 3 is fixedly connected with a short rod 4, the outside of the short rod 4 is movably connected with a sliding plate 5, the inside of the sliding plate 5 is provided with a groove, two sides of the groove are provided with teeth, the short rod 4 is provided with six equal-angle distribution outside the rotating disc 3, the short rod 4 is matched with the teeth in specification and is corresponding in position, a fixing plate 6 is fixedly connected to the inner side of the groove, the inner side of the housing 1 is provided with a sliding groove, and the sliding; slide 5 ' S inboard fixedly connected with fixed plate 6, the inside fixedly connected with N of fixed plate 6 utmost point 7, the specification and the position phase-match of N utmost point 7 and S utmost point 8, connecting rod 9 and bimetal strip 10 ' S specification phase-match and position are corresponding, the outside swing joint of connecting rod 9 has spring one, the one end fixed connection that connecting rod 9 was kept away from to spring one is in the inside of fixed plate 6, the outside fixedly connected with bar copper of connecting rod 9, bar copper and N utmost point 7 and S utmost point 8 ' S specification phase-match, solitary N utmost point 7, S utmost point 8, connecting rod 9, an electromagnetic induction subassembly is constituteed to the bar copper, the inside symmetric distribution of fixed plate 6 has four electromagnetic induction subassemblies, bimetal strip 10 adopts two kinds of different thermal expansion coefficients and has the metal material of suitability, bimetal strip 10 and connecting rod 9.

The inside of the fixed plate 6 is fixedly connected with an S pole 8, the inside of the fixed plate 6 is movably connected with a connecting rod 9, the inside of the fixed plate 6 is fixedly connected with a bimetallic strip 10, the outside of the fixed plate 6 is fixedly connected with a first shell 11, the inside of the first shell 11 is movably connected with a second rotating shaft 12, the outside of the second rotating shaft 12 is fixedly connected with a ratchet 13, the inside of the first shell 11 is movably connected with a clamping rod 14, the clamping rod 14 is matched with the specification of the ratchet 13, the inside of the clamping rod 14 is fixedly connected with an iron block, the inside of the first shell 11 is fixedly connected with a first electromagnet, the first electromagnet is matched with the specification of the iron block and corresponds to the iron block in position, the outside of the clamping rod 14 is fixedly connected with a second spring, one end of the second spring, which is far away from the clamping rod 14, the outside of the first electromagnet is fixedly connected with, and heat dissipation components are arranged outside the fixing plate 6, the first connecting rod 19 and the second connecting rod 20.

The outer part of the fixed plate 6 is movably connected with a switch component 15, the switch component 15 mainly comprises a shell II, a bottom plate, a movable block, an electromagnet II and a spring III, the shell II is fixedly connected inside the fixed plate 6, the inner part of the shell II is movably connected with the bottom plate, the outer part of the bottom plate is movably connected with the movable block, the inner part of the bottom plate is fixedly connected with the iron block, the electromagnet II is matched with the specification of the iron block and corresponds to the position of the iron block, the outer part of the bottom plate is fixedly connected with the spring III, one end of the spring III, far away from the bottom plate, is fixedly connected outside the electromagnet, two switch components 15 are symmetrically distributed inside the fixed plate 6, the surface of the shell II is provided with a sliding chute, the movable block is provided with six equal angles and is distributed inside the shell II, the outer part of the movable block is fixedly, and then make the bottom plate motion, the bottom plate motion makes the movable block move under the effect of casing two, and the movable block motion forms a through-hole in the inside of casing two, and the inside of fixed plate 6 is provided with the dry powder, and the dry powder can spill through the through-hole of casing two insides.

A third rotating shaft 16 is movably connected inside the shell 1, gears 17 are fixedly connected to the outside of the third rotating shaft 16, two gears 17 are arranged, the two gears 17 are meshed with each other, six blocking rods 18 are distributed outside the gears 17 at equal angles, rotating wheels are movably connected to the outside of the first connecting rod 19 and are matched with the specifications of the blocking rods 18, two ends of the first connecting rod 19 are movably connected with a second connecting rod 20, one end, far away from the first connecting rod 19, of the second connecting rod 20 is movably connected inside the shell 1, the positions of the blocking rods 18 outside the two gears 17 are corresponding, and the rotating wheels can move under the action of the blocking rods 18 outside the two gears 17, so that the first connecting rod 19 moves; the outside fixedly connected with pin 18 of gear 17, the outside swing joint of pin 18 has connecting rod one 19, the outside swing joint of connecting rod one 19 has connecting rod two 20, the outside fixedly connected with motor of pivot one 2, motor, electro-magnet one, electro-magnet two all are connected with the external power supply electricity, pivot two 12, pivot three 16 all are connected with the drive power supply electricity, bar copper, external power supply, drive power supply all are connected with the control maincenter electricity.

Through the interaction among the fixing plate 6, the N pole 7, the S pole 8, the connecting rod 9, the bimetallic strip 10, the ratchet 13, the clamping rod 14 and the switch assembly 15, the heat dissipation assembly can stop running when internal equipment or a wiring part is ignited and burnt due to high temperature, then the switch assembly 15 is opened, the ignition point is extinguished, and hardware of other equipment is prevented from being ignited by fire, so that more equipment is burnt, and serious consequences are caused; through the interact between the structure, can make the inside heat of switch give off the outside, reduce the inside temperature of switch, make the inside hardware normal operating of switch, can charge for the terminal of some IP simultaneously, in internal equipment or wiring department when the burning of firing at a fire because high temperature, the fire point of putting out that can be timely, avoid the intensity of a fire to enlarge and burn out more equipment, some subassemblies that prevent the switch produce sharp smell under high temperature state, the influence is healthy at the personnel of long-term in the computer lab work, this device accords with the theory of intelligent manufacturing.

The working principle is that when the device is started, in an initial state, the electromagnet I is electrified to attract an iron block inside the clamping rod 14 and enable the clamping rod 14 to move, the spring I is compressed, the clamping rod 14 does not contact with the ratchet wheel 13 any more and does not limit the movement of the ratchet wheel 13 any more, a user controls an external power supply to supply power to the motor through the control center, the driving power supply is controlled to drive the rotating shaft II 12 and the rotating shaft III 16 to rotate at the same time, the motor operates to drive the rotating shaft I2 to rotate, the rotating shaft I2 rotates to drive the rotating disc 3 to rotate, the rotating disc 3 rotates to drive the short rod 4 to move, the short rod 4 moves to drive the sliding plate 5 to move under the action of teeth on the inner side of the groove, the sliding plate 5 moves to drive the fixing plate 6 to move, the fixing plate 6 moves to drive the heat dissipation assembly to move, the rotating shaft II 12 rotates to drive the ratchet wheel 13 to rotate, the stop lever 18 moves to drive the rotating wheel to move, the rotating wheel moves to drive the first connecting rod 19 to move, and the first connecting rod 19 moves to drive the second connecting rod 20 to move.

When a fire occurs in the switch, the bimetallic strip 10 is heated and bent to enable the connecting rod 9 to move, the connecting rod 9 moves to drive the copper rod to move, the copper rod moves to cut the magnetic induction line between the N pole 7 and the S pole 8 and generate induction current in the copper rod, at the moment, the control center controls the external power supply not to electrify the electromagnet any more and controls the driving power supply not to drive the second rotating shaft 12 and the third rotating shaft 16 to rotate any more, meanwhile, the control center controls an external power supply to electrify the second electromagnet, the second electromagnet can attract the iron block inside the bottom plate and enable the bottom plate to move when being electrified, the first electromagnet is not attracted to the iron block inside the clamping rod 14 any more when being powered off, the clamping rod 14 is clamped with the ratchet wheel 13 under the action of restoring force of the first spring, the bottom plate moves to enable the movable block to move under the action of the second shell, the movable block moves to form a through hole in the second shell, and dry powder inside the fixed plate 6 can be spilled out through the through hole in the second shell.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

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