阅读说明：本技术 一种半导体空气取水及空调装置 (Semiconductor air water taking and air conditioning device ) 是由 李东洺 吴治将 孙婉纯 彭莺 梁国浩 马朝贤 冯凤兰 于 2021-07-23 设计创作，主要内容包括：本发明公开了一种半导体空气取水及空调装置,涉及新型骑行配套装置技术领域。本发明包括骑行供电模块和骑行取水及送风配合结构,骑行供电模块固定于自行车的车架底端,骑行取水及送风配合结构固定于自行车车把位置,骑行供电模块与骑行取水及送风配合结构通过导线连接。本发明通过骑行取水及送风配合结构与骑行供电模块的配合设计,使得装置便于在骑行过程中利用人力发电,形成制冷输出,将骑行过程中的空气处的水蒸气经过过滤冷凝后,形成结露导入收集水壶内部,形成在骑行过程中的一部分水分节省,提高能源利用率,并便于利用冷凝过程中的温度导出形成可调节角度的骑行冷风供应,提高骑行舒适度。(The invention discloses a semiconductor air water taking and air conditioning device, and relates to the technical field of novel riding matching devices. The bicycle comprises a riding power supply module and a riding water taking and air supplying matching structure, wherein the riding power supply module is fixed at the bottom end of a frame of the bicycle, the riding water taking and air supplying matching structure is fixed at the position of a handlebar of the bicycle, and the riding power supply module is connected with the riding water taking and air supplying matching structure through a lead. According to the invention, through the matching design of the riding water taking and air supplying matching structure and the riding power supply module, the device is convenient for generating electricity by manpower in the riding process to form refrigeration output, after water vapor at the air in the riding process is filtered and condensed, dew is formed and is guided into the collecting kettle, part of moisture in the riding process is saved, the energy utilization rate is improved, the riding cold air supply with adjustable angle is formed by guiding out the temperature in the condensing process, and the riding comfort level is improved.)

1. A semiconductor air water taking and air conditioning device is characterized in that: including power module (1) and the water intaking of riding and air supply cooperation structure (2), power module (1) of riding is fixed in the frame bottom of bicycle, the water intaking of riding and air supply cooperation structure (2) are fixed in bicycle handlebar position, power module (1) of riding is connected through the wire with water intaking of riding and air supply cooperation structure (2), power module (1) of riding is used for producing electric power at the in-process of riding, water intaking of riding and air supply cooperation structure (2) are used for collecting moisture at the in-process condensation of riding to carry out cold wind output to riding passerby.

2. A semiconductor water taking and air conditioning unit as claimed in claim 1, wherein: the riding power supply module (1) comprises an assembly frame (3), a pedal rod (4), a driving gear (5), a driven gear shaft (6), a driving bevel gear (7), a driven bevel gear (8) and a micro generator (9), wherein the pedal rod (4) is rotatably connected to the inner side of one end of the assembly frame (3), the driving gear (5) is fixedly connected to the outer side of the pedal rod (4), the driven gear shaft (6) is rotatably connected to the inner side of the other end of the assembly frame (3), the driving gear (5) is meshed with the driven gear shaft (6), the driving bevel gear (7) is fixedly connected to the outer part of one side of the driven gear shaft (6), the micro generator (9) is fixedly connected to the bottom end of one side of the assembly frame (3) through a screw, and the driven bevel gear (8) is fixedly connected to the input end of the micro generator (9), the bottom end of the driving bevel gear (7) is in meshed connection with the driven bevel gear (8).

3. A semiconductor water taking and air conditioning unit as claimed in claim 2, wherein: ride power module (1) still includes battery module (10), electrically conductive output connecting block (11) and control module (12), the top fixedly connected with control module (12) of battery module (10), control module (12) and the water intaking of riding and air supply cooperation structure (2) electric connection, the electrically conductive output connecting block (11) of one end fixedly connected with of battery module (10), battery module (10) pass through the wire with the output of micro-generator (9) and are connected, battery module (10) are fixed in the top of the water intaking of riding and air supply cooperation structure (2), micro-generator (9) department carries on there are two windage, one of them the windage is the excitation windage, another the windage is the electricity generation windage, the excitation windage is the symmetric design with the electricity generation windage.

4. A semiconductor water taking and air conditioning unit as claimed in claim 3, wherein: ride water intaking and air supply cooperation structure (2) including built-in pipe (13), two-way heat dissipation module (14), refrigeration air supply module (15), air inlet condensation module (16) and collection kettle (17) of carrying on, built-in both sides fixedly connected with two-way heat dissipation module (14) of carrying on pipe (13), built-in inboard fixedly connected with refrigeration air supply module (15) of carrying on pipe (13), the inboard fixedly connected with air inlet condensation module (16) of refrigeration air supply module (15), there is collection kettle (17) bottom the air inlet condensation module (16) through threaded connection.

5. The semiconductor air water taking and air conditioning device according to claim 4, wherein: the bidirectional heat dissipation module (14) comprises a heat dissipation guide pipe (18), a first wind power guide fan (19) and a fitting clamp (20), the inner side of the heat dissipation guide pipe (18) is fixedly connected with the first wind power guide fan (19), the outer side of the heat dissipation guide pipe (18) is fixedly connected with the fitting clamp (20), and the fitting clamp (20) is made of PP (polypropylene).

6. A semiconductor water taking and air conditioning unit as claimed in claim 5, wherein: refrigeration air supply module (15) are including built-in refrigeration jar (21), semiconductor refrigeration board (22), cooling guide tube (23), second wind-force guide fan (24) and extend and take board (25), both sides fixedly connected with semiconductor refrigeration board (22) of built-in refrigeration jar (21), the end of heating of semiconductor refrigeration board (22) is located the outside of built-in refrigeration jar (21), second wind-force guide fan (24) are fixed in the inboard of cooling guide tube (23), the one end fixedly connected with cooling guide tube (23) of built-in refrigeration jar (21), the both sides fixedly connected with of cooling guide tube (23) extends and takes board (25).

7. A semiconductor water taking and air conditioning unit as claimed in claim 6, wherein: refrigeration air supply module (15) still includes micro motor (26), angle modulation push rod (27), elastic hose (28) and goes out tuber pipe (29), one of them extend one side of taking board (25) and pass through screw fixedly connected with micro motor (26), micro motor (26) are connected through the wire with electrically conductive output connecting block (11), the output fixedly connected with angle modulation push rod (27) of micro motor (26), angle modulation push rod (27) are connected with the inboard rotation that extends taking board (25), one side fixedly connected with elastic hose (28) of cooling guiding tube (23), the one end fixedly connected with of elastic hose (28) goes out tuber pipe (29), the both sides that go out tuber pipe (29) and the inboard fixed connection that extends taking board (25) one end.

8. A semiconductor water taking and air conditioning unit as claimed in claim 7, wherein: the air inlet condensation module (16) comprises a condensation liquid outlet pipe (30), an air inlet pipe (31), a filtering dust-proof plate (32) and a matched assembly delivery pipe (33), wherein the air inlet pipe (31) is fixedly connected with one end of the condensation liquid outlet pipe (30), the filtering dust-proof plate (32) is fixedly connected with the inner side of the air inlet pipe (31), and the matched assembly delivery pipe (33) is welded at the bottom end of the condensation liquid outlet pipe (30).

9. A semiconductor water taking and air conditioning unit as claimed in claim 8, wherein: a filter screen is fixed on the inner side of the filtering dustproof plate (32), and the filter screen is made of plant fibers.

Technical Field

The invention relates to the technical field of semiconductor refrigeration, in particular to a semiconductor air water taking and air conditioning device.

Background

Along with the rapid development of society, the motion of riding is as one of daily motion, possess a large amount of hobby crowds, and the in-process of riding along with the loss of a large amount of health moisture, need carry out the replenishment of water yield, but the in-process of riding now, the drinking cup is put on the back usually, and is inconvenient when needing to drink water and takes, also be inconvenient for replenish the water yield in the drinking cup, in addition, heat by bike summer, though windy, nevertheless wind is also hot, and the comfort level of riding is relatively poor.

Disclosure of Invention

The invention aims to provide a semiconductor air water taking and air conditioning device, which solves the existing problems: in the existing riding process, a water cup is usually placed on a backpack to be carried on the back, and is inconvenient to take and use when water is required to be drunk, and water is not convenient to supplement in the water cup.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a semiconductor air water intaking and air conditioning equipment, includes the power module of riding and the water intaking of riding and air supply cooperation structure, the power module of riding is fixed in the frame bottom of bicycle, the water intaking of riding and air supply cooperation structure are fixed in bicycle handlebar position, the power module of riding passes through the wire with the water intaking of riding and air supply cooperation structure and is connected, the power module of riding is used for producing electric power at the in-process of riding, the water intaking of riding and air supply cooperation structure are used for condensing and collect moisture in the in-process of riding to carry out cold wind output to riding passerby.

Preferably, the riding power supply module comprises an assembly frame, a pedal rod, a driving gear, a driven gear shaft, a driving bevel gear, a driven bevel gear and a micro generator, wherein the pedal rod is connected to the inner side of one end of the assembly frame in a rotating mode, the driving gear is fixedly connected to the outer side of the pedal rod, the driven gear shaft is connected to the inner side of the other end of the assembly frame in a rotating mode, the driving gear is meshed with the driven gear shaft, the driving bevel gear is fixedly connected to the outer portion of one side of the driven gear shaft in a meshing mode, the micro generator is fixedly connected to the bottom end of one side of the assembly frame in a screwing mode, the driven bevel gear is fixedly connected to the input end of the micro generator, and the bottom end of the driving bevel gear is meshed with the driven bevel gear.

Preferably, the power module of riding still includes battery module, electrically conductive output connecting block and control module, battery module's top fixedly connected with control module, control module and the water intaking of riding and air supply cooperation structure electric connection, battery module's one end fixedly connected with electrically conductive output connecting block, battery module passes through the wire with micro-generator's output and is connected, battery module is fixed in the top of the water intaking of riding and air supply cooperation structure, micro-generator department carries there are two windings, one of them the winding is the excitation winding, another the winding is the electricity generation winding, the excitation winding is the symmetric design with the electricity generation winding.

Through stepping on the foot rest lever, make the foot rest lever drive the driving gear and accomplish the rotation, utilize the meshing of driving gear and driven gear axle to connect, make the driving gear with torque conduction to driven gear axle, utilize the driven gear axle to drive bevel gear and accomplish the rotation, utilize drive bevel gear and driven bevel gear's meshing, make driven bevel gear drive microgenerator's input rotate, make the excitation winding produce the excitation, utilize the excitation in the cooperation of generating winding, form electric power, this electric power output to battery module, accomplish charging to battery module, utilize battery module with electric power supply to the water intaking of riding and air supply cooperation structure, and usable control module accomplishes and controls water intaking and air supply cooperation structure of riding.

Preferably, the water intaking and air supply cooperation structure of riding includes built-in carrier pipe, two-way heat dissipation module, refrigeration air supply module, air inlet condensation module and collects the kettle, the two-way heat dissipation module of both sides fixedly connected with of built-in carrier pipe, the inboard fixedly connected with refrigeration air supply module of built-in carrier pipe, the inboard fixedly connected with air inlet condensation module of refrigeration air supply module, threaded connection has the collection kettle through the bottom of air inlet condensation module.

Preferably, the bidirectional heat dissipation module comprises a heat dissipation guide pipe, a first wind power guide fan and a matching clamp, the first wind power guide fan is fixedly connected to the inner side of the heat dissipation guide pipe, the matching clamp is fixedly connected to the outer side of the heat dissipation guide pipe, and the matching clamp is made of PP.

Preferably, refrigeration air supply module includes built-in refrigeration jar, semiconductor refrigeration board, cooling guiding tube, second wind-force guide fan and extends the board of taking advantage of, the both sides fixedly connected with semiconductor refrigeration board of built-in refrigeration jar, the heating end of semiconductor refrigeration board is located the outside of built-in refrigeration jar, second wind-force guide fan is fixed in the inboard of cooling guiding tube, the one end fixedly connected with cooling guiding tube of built-in refrigeration jar, the both sides fixedly connected with of cooling guiding tube extends the board of taking advantage of.

Preferably, refrigeration air supply module still includes micro motor, angle modulation push rod, flexible hose and play tuber pipe, one of them the extension is taken one side of support plate and is passed through screw fixedly connected with micro motor, micro motor passes through the wire with electrically conductive output connecting block and is connected, micro motor's output end fixedly connected with angle modulation push rod, angle modulation push rod rotates with the inboard that extends the support plate and is connected, one side fixedly connected with flexible hose of cooling guiding tube, flexible hose's one end fixedly connected with goes out the tuber pipe, go out the both sides of tuber pipe and extend the inboard fixed connection who takes support plate one end.

Preferably, the air inlet condensation module comprises a condensation liquid outlet pipe, an air inlet pipe, a filtering dust guard and an assembled delivery pipe, wherein the air inlet pipe is fixedly connected to one end of the condensation liquid outlet pipe, the filtering dust guard is fixedly connected to the inner side of the air inlet pipe, and the assembled delivery pipe is welded to the bottom end of the condensation liquid outlet pipe.

Preferably, a filter screen is fixed on the inner side of the filtering dustproof plate, and the filter screen is made of plant fibers.

When the bicycle is ridden, the matching structure of water taking and air supplying during riding is fixed by assembling the clamp and the bicycle handlebar, so that external air is blown into the interior of the condensation liquid outlet pipe through the air inlet pipe, dust and particles carried in the external air are isolated and filtered through the filtering dust guard at the moment, the dust is prevented from entering the interior of the condensation liquid outlet pipe, the refrigeration output of the interior of the built-in refrigeration tank is completed through the semiconductor refrigeration plate at the moment, a large amount of refrigeration temperature is accumulated in the interior of the built-in refrigeration tank, the water vapor accumulated in the air in the condensation liquid outlet pipe is rapidly condensed and condensed, the condensed water flows into the interior of the collection kettle through the assembling delivery pipe to form the accumulation of water amount, the collection kettle is separated from the assembling delivery pipe when water is required to be drunk, the heat generated by the semiconductor refrigeration plate in the refrigeration process is discharged from the assembling delivery pipe by utilizing the first wind power guide fan, when the cold wind that carries out the comfort level is supplied with to riding passerby, lead out through the inside cooling temperature who installs the refrigeration jar inside through the wind-force that self formed through second wind-force guide fan, drive angle modulation push rod through control micro motor and accomplish the rotation to produce angle modulation, drive the air-out pipe and accomplish different angle modulation, form the air-out of different angles.

Compared with the prior art, the invention has the beneficial effects that:

through the cooperation design of water intaking and air supply cooperation structure and the power module of riding for the device is convenient for utilize manpower electricity generation at the in-process of riding, form the refrigeration output, the vapor of the air department of the in-process of will riding is through filtering the condensation after, it is inside to form the leading-in collection kettle of dewfall, form and save at the partly moisture of the in-process of riding, improve energy utilization, and be convenient for utilize the temperature derivation in the condensation process to form angle-adjustable's the cold wind supply of riding, improve the comfort level of riding.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention as a whole;

FIG. 2 is a side view of the present invention in its entirety;

FIG. 3 is a schematic view of a partial structure of the riding power supply module of the present invention;

FIG. 4 is a schematic view of a partial structure of a water intake and air supply cooperating structure for riding of the present invention;

FIG. 5 is an exploded view of the structure of the water intake and air supply cooperating structure for riding of the present invention;

FIG. 6 is a schematic view of a partial structure of a bi-directional heat dissipation module according to the present invention;

FIG. 7 is a schematic view of a portion of a cooling air supply module according to the present invention;

fig. 8 is a partial structural schematic view of the intake air condensing module of the present invention.

In the figure: 1. a riding power supply module; 2. a water taking and air supplying matching structure for riding; 3. assembling a frame; 4. a foot lever; 5. a driving gear; 6. a driven gear shaft; 7. a drive bevel gear; 8. a driven bevel gear; 9. a micro-generator; 10. a battery module; 11. a conductive output connection block; 12. a control module; 13. a carrying pipe is arranged in the device; 14. a bidirectional heat dissipation module; 15. a refrigeration air supply module; 16. an air inlet condensing module; 17. collecting the kettle; 18. a heat dissipation guide pipe; 19. a first wind guide fan; 20. assembling a clamp; 21. a refrigeration tank is arranged in the refrigerator; 22. a semiconductor refrigeration plate; 23. cooling the guide tube; 24. a second wind guide fan; 25. extending the carrying plate; 26. a micro motor; 27. an angle adjusting push rod; 28. an elastic hose; 29. an air outlet pipe; 30. a condensation liquid outlet pipe; 31. an air inlet pipe; 32. a dust-proof filter plate; 33. a delivery pipe is assembled.

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.

Please refer to fig. 1-2:

the utility model provides a semiconductor air water intaking and air conditioning equipment, including the power module 1 of riding with the water intaking of riding and air supply cooperation structure 2, the power module 1 of riding is fixed in the frame bottom of bicycle, the water intaking of riding and air supply cooperation structure 2 are fixed in bicycle handlebar position, the power module 1 of riding is connected through the wire with water intaking of riding and air supply cooperation structure 2, the power module 1 of riding is used for producing electric power at the in-process of riding, the water intaking of riding and air supply cooperation structure 2 are used for collecting moisture at the in-process condensation of riding, and carry out cold wind output to riding passerby.

Please refer to fig. 3:

the riding power supply module 1 comprises a matching frame 3, a pedal rod 4, a driving gear 5, a driven gear shaft 6, a driving bevel gear 7, a driven bevel gear 8 and a micro generator 9, wherein the inner side of one end of the matching frame 3 is rotatably connected with the pedal rod 4, the outer side of the pedal rod 4 is fixedly connected with the driving gear 5, the inner side of the other end of the matching frame 3 is rotatably connected with the driven gear shaft 6, the driving gear 5 is meshed with the driven gear shaft 6, the outer part of one side of the driven gear shaft 6 is fixedly connected with the driving bevel gear 7, the bottom end of one side of the matching frame 3 is fixedly connected with the micro generator 9 through a screw, the input end of the micro generator 9 is fixedly connected with the driven bevel gear 8, and the bottom end of the driving bevel gear 7 is meshed with the driven bevel gear 8;

the riding power supply module 1 further comprises a storage battery module 10, a conductive output connecting block 11 and a control module 12, the top end of the storage battery module 10 is fixedly connected with the control module 12, the control module 12 is electrically connected with the riding water taking and air supplying matching structure 2, one end of the storage battery module 10 is fixedly connected with the conductive output connecting block 11, the storage battery module 10 is connected with the output end of the micro-generator 9 through a wire, the storage battery module 10 is fixed at the top end of the riding water taking and air supplying matching structure 2, two windings are carried at the position of the micro-generator 9, one winding is an excitation winding, the other winding is a power generation winding, and the excitation winding and the power generation winding are symmetrically designed;

the pedal rod 4 is treaded, the pedal rod 4 drives the driving gear 5 to complete rotation, the driving gear 5 is meshed with the driven gear shaft 6 to be connected, torque is transmitted to the driven gear shaft 6 through the driving gear 5, the driven gear shaft 6 drives the driving bevel gear 7 to complete rotation, the driving bevel gear 7 is meshed with the driven bevel gear 8, the driven bevel gear 8 drives the input end of the micro generator 9 to rotate, excitation windings generate excitation, the excitation windings are matched with the power generation windings to form electric power, the electric power is output to the storage battery module 10 to complete charging of the storage battery module 10, the storage battery module 10 supplies the electric power to the riding water taking and air supplying matching structure 2, and the control module 12 can be used for controlling the riding water taking and air supplying matching structure 2;

please refer to fig. 3-4:

the riding water taking and air supplying matching structure 2 comprises an internally-mounted carrying pipe 13, a bidirectional heat dissipation module 14, a refrigerating air supplying module 15, an air inlet condensation module 16 and a collecting kettle 17, wherein the bidirectional heat dissipation module 14 is fixedly connected to two sides of the internally-mounted carrying pipe 13, the refrigerating air supplying module 15 is fixedly connected to the inner side of the internally-mounted carrying pipe 13, the air inlet condensation module 16 is fixedly connected to the inner side of the refrigerating air supplying module 15, and the bottom end of the air inlet condensation module 16 is connected with the collecting kettle 17 through threads;

please refer to fig. 6-8:

the bidirectional heat dissipation module 14 comprises a heat dissipation guide pipe 18, a first wind power guide fan 19 and a fitting clamp 20, wherein the inner side of the heat dissipation guide pipe 18 is fixedly connected with the first wind power guide fan 19, the outer side of the heat dissipation guide pipe 18 is fixedly connected with the fitting clamp 20, and the fitting clamp 20 is made of PP (polypropylene);

the refrigeration air supply module 15 comprises an internal refrigeration tank 21, a semiconductor refrigeration plate 22, a cooling guide pipe 23, a second wind power guide fan 24 and extension support plates 25, wherein the semiconductor refrigeration plate 22 is fixedly connected to two sides of the internal refrigeration tank 21, the heating end of the semiconductor refrigeration plate 22 is positioned on the outer side of the internal refrigeration tank 21, the second wind power guide fan 24 is fixed to the inner side of the cooling guide pipe 23, the cooling guide pipe 23 is fixedly connected to one end of the internal refrigeration tank 21, and the extension support plates 25 are fixedly connected to two sides of the cooling guide pipe 23;

the refrigerating air supply module 15 further comprises a micro motor 26, an angle adjusting push rod 27, an elastic hose 28 and an air outlet pipe 29, wherein one side of one extension carrying plate 25 is fixedly connected with the micro motor 26 through a screw, the micro motor 26 is connected with the conductive output connecting block 11 through a lead, the output end of the micro motor 26 is fixedly connected with the angle adjusting push rod 27, the angle adjusting push rod 27 is rotatably connected with the inner side of the extension carrying plate 25, one side of the cooling guide pipe 23 is fixedly connected with the elastic hose 28, one end of the elastic hose 28 is fixedly connected with the air outlet pipe 29, and two sides of the air outlet pipe 29 are fixedly connected with the inner side of one end of the extension carrying plate 25;

the air inlet condensation module 16 comprises a condensation liquid outlet pipe 30, an air inlet pipe 31, a filtering dust-proof plate 32 and a matching delivery pipe 33, wherein one end of the condensation liquid outlet pipe 30 is fixedly connected with the air inlet pipe 31, the inner side of the air inlet pipe 31 is fixedly connected with the filtering dust-proof plate 32, and the matching delivery pipe 33 is welded at the bottom end of the condensation liquid outlet pipe 30;

a filter screen is fixed on the inner side of the filter dust-proof plate 32, and the filter screen is made of plant fiber.

When the bicycle is ridden, the matched structure 2 for taking water and supplying air by riding is fixed by clamping the matching hoop 20 and the bicycle handlebar, so that outside air is blown into the interior of the condensation liquid outlet pipe 30 through the air inlet pipe 31, dust and particles carried in the outside air are isolated and filtered through the filtering dust-proof plate 32 at the moment, the dust is prevented from entering the interior of the condensation liquid outlet pipe 30, the refrigeration output of the interior of the internal refrigeration tank 21 is completed through the semiconductor refrigeration plate 22 at the moment, a large amount of refrigeration temperature is accumulated in the internal refrigeration tank 21, the rapid condensation and condensation of water vapor in the air accumulated in the condensation liquid outlet pipe 30 are completed, a water body after condensation flows into the interior of the collection kettle 17 through the matching guide pipe 33 to form the accumulation of water amount, when water is required to be drunk, the collection kettle 17 is separated from the matching guide pipe 33, and the first wind power guide fan 19 is utilized to produce wind power, the heating power that produces semiconductor refrigeration board 22 in the refrigeration process is discharged from built-in carrying on pipe 13, when needs carry out the cold wind supply of comfort level to riding passerby, through the inside cooling temperature of second wind-force guide fan 24 with built-in refrigeration jar 21 and derive through the wind-force that self formed, drive angle adjusting push rod 27 through control micro motor 26 and accomplish and rotate to produce the angle modulation, drive out tuber pipe 29 and accomplish different angle modulation, form the air-out of different angles.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.