CN111846053B - Bicycle refrigerating device based on diameter ratio variable transmission of wheel and friction wheel - Google Patents
Bicycle refrigerating device based on diameter ratio variable transmission of wheel and friction wheel Download PDFInfo
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- CN111846053B CN111846053B CN202010775184.4A CN202010775184A CN111846053B CN 111846053 B CN111846053 B CN 111846053B CN 202010775184 A CN202010775184 A CN 202010775184A CN 111846053 B CN111846053 B CN 111846053B
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- 239000002184 metal Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 13
- 238000005057 refrigeration Methods 0.000 claims abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 14
- 238000009413 insulation Methods 0.000 claims description 7
- 238000004321 preservation Methods 0.000 claims description 6
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 5
- 230000017525 heat dissipation Effects 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000011496 polyurethane foam Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 235000013305 food Nutrition 0.000 abstract description 5
- 238000010030 laminating Methods 0.000 abstract description 3
- 235000013361 beverage Nutrition 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 230000008859 change Effects 0.000 description 7
- 230000009467 reduction Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 235000012206 bottled water Nutrition 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
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- 238000006243 chemical reaction Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 235000020965 cold beverage Nutrition 0.000 description 1
- 230000009351 contact transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
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- 230000006872 improvement Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J9/00—Containers specially adapted for cycles, e.g. panniers or saddle bags
- B62J9/20—Containers specially adapted for cycles, e.g. panniers or saddle bags attached to the cycle as accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J50/00—Arrangements specially adapted for use on cycles not provided for in main groups B62J1/00 - B62J45/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J9/00—Containers specially adapted for cycles, e.g. panniers or saddle bags
- B62J9/20—Containers specially adapted for cycles, e.g. panniers or saddle bags attached to the cycle as accessories
- B62J9/28—Containers specially adapted for cycles, e.g. panniers or saddle bags attached to the cycle as accessories specially adapted for delivery service, e.g. insulated boxes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
- B62L1/00—Brakes; Arrangements thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/14—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention provides a bicycle refrigerating device based on wheel and friction wheel diameter ratio variable transmission, and belongs to the technical field of friction wheel and Stirling refrigerator application. The device includes friction pulley, stirling refrigerator, fridge and control switch, and the friction pulley is connected to the bicycle tire, and the friction pulley passes through the rotor and connects Stirling refrigerator, and the fridge is connected to Stirling refrigerator, and control switch installs on with the handlebar, through the metal wire, control lever connects Stirling refrigerator, and the device utilizes mechanical energy to produce the cold energy, in humanized design, makes friction pulley and rear wheel laminating refrigeration through controlling means compression switch in the deceleration process of riding, also can reach the effect of slowing down, can relieve the laminating between the two when going upward the slope, reduces human load. The invention can be used for refrigerating beverages and cooling foods when in outdoor play, and is light, simple, efficient and energy-saving.
Description
Technical Field
The invention relates to the technical field of friction wheel and Stirling refrigerator application, in particular to a bicycle refrigerating device based on wheel and friction wheel diameter ratio variable transmission.
Background
With the improvement of the living standard of people, more and more people pay attention to the quality of life. The bicycle is a healthy, environment-friendly, convenient and easy-to-learn transportation tool, and becomes a common choice for people to travel in short distance. Especially, the concept of green travel in recent years is deep, and people can prefer a bicycle with good ventilation on a commuter. However, the simple mechanical structure of the bicycle is insufficient to meet other demands of people, and people often want to ride to a place where people feel rare in cigarettes to make a good food, eat roast meat and drink ice beverage, and enjoy the beauty of the body and the side. The riding of the bicycle takes a long time after long trekking, and the food is not fresh and the cold drink is regenerated in hot weather. The conventional power supply and refrigerator are obviously not easy to carry, and the operation of the refrigerator can be stopped if the power supply is exhausted, which brings great inconvenience. Meanwhile, the bicycle often uses the brake to regulate and control the speed of the bicycle intermittently in the riding process, and in the prior bicycle braking system, the kinetic energy of the bicycle can be completely converted into heat energy, and the energy is wasted in the air, so that the bicycle is not reasonably applied. If the original wasted mechanical energy can be directly used for refrigerating, not only the mechanical energy can be fully utilized, but also the functions of the bicycle tend to be diversified, and great convenience is brought to people when the bicycle goes out. By taking the above consideration into consideration, the team designs a device capable of driving a refrigerator to refrigerate by utilizing the friction wheel to change speed, thereby not only realizing the recovery of energy which cannot be utilized originally during braking, but also embodying the concept of green and environment protection and providing a new idea for the efficient, energy-saving and humanized design of the bicycle.
Disclosure of Invention
The invention aims to solve the technical problem of providing a bicycle refrigerating device based on the diameter ratio variable transmission of wheels and friction wheels.
The device comprises a friction wheel, a Stirling refrigerator, a refrigerator and a control system, wherein the Stirling refrigerator comprises a heat regenerator, a refrigerating cylinder, a heat dissipation cylinder, a compression piston, an expansion piston and a central rotating shaft, the refrigerator comprises a heat insulation layer, an aluminum liner and aluminum ribs, the control system comprises a control lever, a control switch, a metal wire and a spring device, a tire of a bicycle is connected with the friction wheel, the friction wheel is connected with the Stirling refrigerator through a rotor, the cold end of the Stirling refrigerator is connected with the refrigerator, the heat regenerator is connected with the refrigerating cylinder and the heat dissipation cylinder, the compression piston and the expansion piston are respectively connected to two flywheels through connecting rods, the two flywheels are connected with the central rotating shaft, the central rotating shaft rotates to drive the compression piston and the expansion piston to complete a circulation process in the heat dissipation cylinder and the refrigerating cylinder, the control switch is positioned at a handle, the control switch is connected with the control lever through the metal wire, one end of the control lever is connected with the friction wheel, and the other end of the control lever is pulled by the metal wire, and the separation and the combination of the friction wheel and the tire are controlled through the spring device; the outside of the refrigerator is a heat preservation layer, the inside of the heat preservation layer is an aluminum inner container, and aluminum ribs are arranged on the side wall of the refrigerator.
The bicycle provides mechanical energy for the Stirling refrigerator, and the low rotation speed of the bicycle wheel is converted into the high rotation speed required by the refrigerator rotor through the ratio variable speed transmission of the diameters of the bicycle wheel and the friction wheel, wherein the low rotation speed is 100-300 r/min, and the high rotation speed is 2000-4000 r/min.
The diameter of the friction wheel is 2.5cm, and the surface of the friction wheel is made of rubber materials.
The heat insulation layer consists of foamed hard polyurethane foam plastic and a foam board with apparent density of 20-23 kg/m, and when the density of the foamed hard polyurethane foam plastic is 35-40 kg/m 3, the heat conductivity coefficient is 0.018-0.024W/(m.k).
The compression piston and the expansion piston complete circulation processes in the refrigeration cylinder and the heat dissipation cylinder, wherein each circulation process comprises four processes of isothermal compression, isothermal heat release, isothermal expansion and isothermal heat absorption.
The heat regenerator is internally filled with a stacked wire mesh which is a porous medium and is formed by stacking wire meshes after molding.
The technical scheme of the invention has the following beneficial effects:
In the scheme, mechanical energy recycling is achieved by mechanically modifying the bicycle and combining friction wheel contact transmission, stirling refrigeration, rib reinforced heat exchange and other design technologies. The device is used for vertically contacting the edge of the rear tire of the bicycle with the friction wheel to drive the rotor of the refrigerator to generate high rotation speed, so that a part of mechanical energy originally wasted during braking and riding can be directly used for refrigeration, thereby saving energy consumption and being convenient to use. Meanwhile, the power input by the refrigerator is low, the load on a person is low after the speed change of the friction wheel, and the device can realize continuous riding operation. The Stirling refrigerator is the most deeply studied and most modified small-sized low-temperature refrigerator, and has wide application and mature technology. The device has small volume, light weight and compact and beautiful structure. The problem that the food is inconvenient to take outside the travel in summer and the energy utilization efficiency is low during riding is effectively solved. The device has the advantages of light weight, portability, capacity of producing cold with the use, high energy conversion efficiency, integration of the device and the like. Meanwhile, when the Stirling engine works, the rotor rotates forwards and reversely to generate heat, and the refrigerator can achieve the effect of the heat insulation box after being refitted. The device realizes the efficient utilization of the mechanical energy of the bicycle during riding, and the design thought of the device is in accordance with the concepts of energy conservation, emission reduction and sustainable development, so that the device has wide application prospect and good economic benefit.
Drawings
FIG. 1 is a schematic view of the overall structure of the device of the present invention;
FIG. 2 is a schematic diagram of a dual piston Stirling refrigerator driven by a crank and connecting rod mechanism in accordance with the present invention;
Fig. 3 is a schematic view of the structure of the interior of the incubator according to the present invention.
Wherein: the bicycle comprises a bicycle body, a 2-friction wheel, a 3-Stirling refrigerator, a 4-refrigerator, a 5-control lever, a 6-control switch, a 7-metal wire, an 8-spring device, a 9-regenerator, a 10-refrigerating cylinder, an 11-radiating cylinder, a 12-compression piston, a 13-expansion piston, a 14-central rotating shaft, a 15-heat-insulating layer, a 16-aluminum inner container and 17-aluminum ribs.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
The invention provides a bicycle refrigerating device based on the diameter ratio variable transmission of wheels and friction wheels.
As shown in fig. 1, the device comprises a friction wheel 2, a stirling refrigerator 3, a refrigerator 4 and a control system, wherein, as shown in fig. 2, the stirling refrigerator 3 comprises a heat regenerator 9, a refrigerating cylinder 10, a heat radiating cylinder 11, a compression piston 12, an expansion piston 13 and a central rotating shaft 14, as shown in fig. 3, the refrigerator 4 comprises a heat insulation layer 15, an aluminum inner container 16 and aluminum ribs 17, the control system comprises a control lever 5, a control switch 6, a metal wire 7 and a spring device 8, a tire of the bicycle 1 is connected with the friction wheel 2, the friction wheel 2 is connected with the stirling refrigerator 3 through a rotor, the cold end of the stirling refrigerator 3 is connected with the refrigerator 4, the heat regenerator 9 is connected with the refrigerating cylinder 10 and the heat radiating cylinder 11, the compression piston 12 and the expansion piston 13 are respectively connected to two flywheels, the two flywheels are connected with the central rotating shaft 14, the central rotating shaft 14 drives the compression piston 12 and the expansion piston 13 to complete the circulation process in the heat radiating cylinder 11 and the refrigerating cylinder 10, the control switch 6 is positioned at a vehicle handle, the control lever 5 is connected with the control lever 5 through the metal wire 7, one end of the control lever 5 is connected with the friction wheel 2, and the other end of the control lever is pulled by the metal wire 7 through the spring device 8 to the friction wheel 2; the outside of the refrigerator 4 is provided with a heat preservation layer 15, the inside of the heat preservation layer 15 is provided with an aluminum liner 16, and the side wall of the refrigerator 4 is provided with aluminum ribs 17.
The Stirling refrigerator is of a double-piston structure driven by a crank-link mechanism, a central rotating shaft 14 of the crank-link mechanism is rigidly connected with a friction wheel 2 through a belt pulley with the diameter of 3.2cm, the friction wheel and a rear wheel of a bicycle form a transmission device, a central rod is connected with a linkage rod through a bearing, the two linkage rods are connected with a piston rod through universal rotary joints, and the piston rod is welded with the piston.
The friction wheel 2 is arranged on two sides of the rear wheel of the bicycle, the surface of the friction wheel is made of rubber materials, the diameter is 2.5cm, the friction force can be increased, the transmission is convenient, and meanwhile, the abrasion to the tire can be reduced. The whole device has automatic adjustment laminating to the brake wheel.
The annular heat regenerator 9 is internally filled with a stacked wire mesh, is a typical porous medium, is formed by stacking wire meshes after molding, has a good transverse heat conduction effect, is simple and convenient to manufacture, and has low cost. The heat regenerator is connected with a refrigerating cylinder 10 and a radiating cylinder 11 of the Stirling refrigerator through metal heat insulation material pipelines, and the pipelines and the cylinder body are directly welded.
The control switch 6 of the control system is positioned at the handle of the vehicle and is connected with the control lever 5 through a metal wire 7, one end of the lever is connected with the friction wheel, the other end of the lever can be pulled by the metal wire, and the separation and the combination of the friction wheel and the tire are controlled through a spring device 8.
The interior of the refrigerator 4 is made of a heat insulating layer 15, an aluminum liner 16 and aluminum ribs 17. The top end of the refrigerating cylinder of the Stirling refrigerator is directly connected with the inside of the refrigerator through the ribs, so that heat exchange between the refrigerating cylinder and the refrigerator is more sufficient. The heat insulating layer is made of foamed hard polyurethane foam plastic and high-density foam board, and has excellent heat insulating performance, and the ribs should be laid in the wall of the refrigerator in grid form and welded to the junction of the refrigerator body.
The bicycle installed by the device can be a bicycle with a normal structure on the market, such as a scooter, a mountain bike and the like.
The working principle of the whole device is as follows: when a person rides a bicycle, the pedal is stepped to drive the chain to rotate, the rear wheel of the bicycle is driven to rotate, the friction wheel 2 contacts with the rear wheel to rotate, the low rotating speed of the rear wheel is converted into the high rotating speed required by the refrigerator through the diameter ratio of the two wheels, the belt pulley is driven to rotate, the central rotating shaft 14 of the crank connecting rod mechanism in the Stirling refrigerator is driven to rotate, the central shaft drives the central rod to drive the piston rod to reciprocate, the piston pushes the working medium in the cylinder to perform four processes of isothermal compression, isovolumetric heat release, isothermal expansion and isovolumetric heat absorption among the refrigerating cylinder, the radiating cylinder and the heat regenerator, one cycle is completed, the refrigerating cylinder 10 is directly connected with the inside of the refrigerator 4 through the grid-shaped ribs 17, and cold energy is directly stored in the refrigerator to manufacture a low-temperature space. The theoretical refrigerating power is 74-124W. The control switch 6 can regulate and control the separation and the combination of the friction wheel and the rear wheel at any time, thereby controlling the intermittent refrigeration of the Stirling engine and realizing the effective utilization of mechanical energy.
The following describes specific embodiments.
Examples
The device is used for exploring the temperature change of the incubator and the stored objects in the riding process of the bicycle. The experiment was carried out at room temperature of 23.6℃and riding speed of 4m/s for 1 hour, and the space temperature of the incubator and the temperature change condition of two bottles of bottled water with initial temperature of 21.9℃were examined. The temperature of the space in the incubator is continuously reduced along with the increase of riding time, the change trend is that the temperature is reduced firstly, then is reduced, the initial temperature reduction speed is very fast, almost presents a proportional straight line, the temperature reduction speed is reduced after 27min, and finally the temperature tends to be stabilized at 9.0 ℃ after about 40 min. The refrigeration of bottled water is indirect refrigeration taking air in a box as a medium, so that a certain heat transfer temperature difference exists between the bottled water and the air in the box, and the refrigeration effect also has hysteresis; the water temperature is affected by the influence, the reduction trend is that the water temperature is reduced slowly and then is reduced slowly, the temperature difference between the water temperature and the air is 3-6 ℃, the reduction rate is maximum at 33 minutes, and the temperature difference between the water temperature and the temperature in the tank is also maximum. After 1 hour of riding, the water temperature was reduced to 12.3 ℃ and the air temperature difference was 3.3 ℃ and 9.6 ℃ compared to the initial temperature.
Examples
Using the same apparatus as in example 1, the initial temperature in the incubator was set at 25℃and the initial temperature of two bottles of bottled water was 23℃with the other conditions being the same as in example 1. According to the above operating conditions, the temperature in the incubator was finally measured to be stabilized at 10.3 ℃ and the water temperature was reduced to 13.2 ℃ by 9.8 ℃ compared with the initial water temperature.
Examples
The same apparatus as in example 1 was used, and the riding speed was controlled at 5m/s for 1 hour, with the other conditions being the same as in example 1. According to the above operating conditions, the temperature in the incubator was finally measured to be stabilized at 7.8 ℃ and the water temperature was reduced to 11.1 ℃ by 10.8 ℃ compared with the initial water temperature.
Examples
The same apparatus as in example 1 was used, and the riding speed was controlled at 4m/s for 1.5 hours, with the other conditions being the same as in example 1. According to the above operating conditions, the temperature in the incubator was finally measured to be stabilized at 8.4 ℃ and the water temperature was reduced to 11.8 ℃ by 10.1 ℃ compared with the initial water temperature.
Examples
During riding of the bicycle, an upward slope or an emergency is inevitably met, and the friction wheel is required to be released or the bicycle is stopped, so that the operation of the refrigerator is discontinuous. The temperature in the box and the change of the water temperature along with the riding time of the experimental device during intermittent riding are examined. The riding speed is still 4m/s, the temperature in the box and the water temperature in the initial state are 23.7 ℃ and 22.5 ℃ respectively, the total running time of the refrigerator is 1 hour, and the refrigerator stops working intermittently for 10 minutes every 10 minutes. In the intermittent operation process, the heat transfer temperature difference of water and air is relatively average, about 3.5 ℃ and has no great change, the final value of the temperature in the box is 9.4 ℃, the water temperature is reduced to 13.2 ℃, and the temperature is reduced by 9.3 ℃ compared with the initial water temperature.
The device effectively solves the problems of inconvenience in taking food outside the trip in summer and low energy utilization efficiency during riding, and has the advantages of light weight, portability, convenient use of cold quantity along with production, integrated device, wide popularization range and the like. Meanwhile, when the Stirling engine works, the rotor rotates forwards and reversely to generate heat, the refrigerator can achieve the effect of the heat insulation box after being refitted, and the economic benefit can be doubled. The device realizes the efficient utilization of the mechanical energy of the bicycle during riding, and the design thought of the device is in accordance with the concepts of energy conservation, emission reduction and sustainable development, so that the device has wide application prospect.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (2)
1. A bicycle refrigerating device based on wheel and friction wheel diameter ratio variable transmission is characterized in that: comprises a friction wheel (2), a Stirling refrigerator (3), a refrigerating box (4) and a control system, wherein the Stirling refrigerator (3) comprises a heat regenerator (9), a refrigerating cylinder (10), a heat radiating cylinder (11), a compression piston (12) and an expansion piston (13), a central rotating shaft (14), the refrigerating box (4) comprises a heat insulation layer (15), an aluminum inner container (16) and aluminum ribs (17), the control system comprises a control lever (5), a control switch (6), a metal wire (7) and a spring device (8), a tire of a bicycle (1) is connected with the friction wheel (2), the friction wheel (2) is connected with the Stirling refrigerator (3) through a rotor, the cold end of the Stirling refrigerator (3) is connected with the refrigerating box (4), the heat regenerator (9) is connected with the refrigerating cylinder (10) and the heat radiating cylinder (11), the compression piston (12) and the expansion piston (13) are respectively connected to two flywheels, the two flywheels are connected with the central rotating shaft (14), the central rotating shaft (14) drives the compression piston (12) and the expansion piston (13) to complete circulation in the cylinder (11) and the refrigerating cylinder (10), the control lever (6) is connected with the heat radiating cylinder (6) through the control lever (6), one end of the control lever (5) is connected with the friction wheel (2), the other end is pulled by the metal wire (7), and the separation and the combination of the friction wheel (2) and the tire are controlled through the spring device (8); the outside of the refrigerator (4) is provided with a heat preservation layer (15), the inside of the heat preservation layer (15) is provided with an aluminum liner (16), and the side wall of the refrigerator (4) is provided with aluminum ribs (17);
The bicycle (1) provides mechanical energy for the Stirling refrigerator (3), and the diameter ratio variable transmission of the wheels of the bicycle (1) and the friction wheel (2) converts the low rotation speed of the wheels of the bicycle into the high rotation speed required by the rotor of the refrigerator, wherein the low rotation speed is 100-300 r/min, and the high rotation speed is 2000-4000 r/min;
the diameter of the friction wheel (2) is 2.5cm, and the surface of the friction wheel (2) is made of rubber materials;
The heat insulation layer (15) consists of foamed rigid polyurethane foam plastic and a foam board with apparent density of 20-23 kg/m, and when the density of the foamed rigid polyurethane foam plastic is 35-40 kg/m 3, the heat conductivity coefficient is 0.018-0.024W/(m.k);
and the interior of the heat regenerator (9) is filled with a stacked wire mesh which is formed by stacking wire meshes after molding.
2. The bicycle refrigeration device based on wheel to friction wheel diameter ratio transmission of claim 1, wherein: the compression piston (12) and the expansion piston (13) complete circulation processes in the refrigeration cylinder (10) and the heat dissipation cylinder (11), wherein each circulation process comprises four processes of isothermal compression, isothermal heat release, isothermal expansion and isothermal heat absorption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010775184.4A CN111846053B (en) | 2020-08-03 | 2020-08-03 | Bicycle refrigerating device based on diameter ratio variable transmission of wheel and friction wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010775184.4A CN111846053B (en) | 2020-08-03 | 2020-08-03 | Bicycle refrigerating device based on diameter ratio variable transmission of wheel and friction wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111846053A CN111846053A (en) | 2020-10-30 |
| CN111846053B true CN111846053B (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010775184.4A Active CN111846053B (en) | 2020-08-03 | 2020-08-03 | Bicycle refrigerating device based on diameter ratio variable transmission of wheel and friction wheel |
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| CN (1) | CN111846053B (en) |
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| CN212529887U (en) * | 2020-08-03 | 2021-02-12 | 北京科技大学 | Bicycle refrigerating device based on wheel and friction wheel diameter ratio variable-speed transmission |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3751175B2 (en) * | 1999-12-21 | 2006-03-01 | シャープ株式会社 | Stirling refrigerator |
| FR2918034B3 (en) * | 2007-06-26 | 2011-10-28 | Yvan Philippe Gilles Pesenti | THERMAL ASSISTANCE FOR BICYCLES. |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2234400Y (en) * | 1995-01-28 | 1996-09-04 | 无锡爱奇克发动机厂 | Belt driven assistor for bicycle |
| CN1402812A (en) * | 1999-12-01 | 2003-03-12 | 梅尔文·L·普鲁伊特 | Apparatus using oscillating rotating pistons |
| WO2015039549A1 (en) * | 2013-09-18 | 2015-03-26 | 黄捷 | Apparatus for replenishing energy in flywheel battery when bicycle is going downhill |
| CN104386201A (en) * | 2014-11-12 | 2015-03-04 | 浙江科技学院 | Friction wheel transmission stepless transmission bicycle |
| CN204432907U (en) * | 2015-01-31 | 2015-07-01 | 李军 | A kind of bicycle adopting wind-force and friction mode generating |
| CN212529887U (en) * | 2020-08-03 | 2021-02-12 | 北京科技大学 | Bicycle refrigerating device based on wheel and friction wheel diameter ratio variable-speed transmission |
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