阅读说明：本技术 一种杠杆结构的弹热制冷系统及其制冷方法 (Elastic heating refrigeration system with lever structure and refrigeration method thereof ) 是由 钱苏昕 陈炎亮 于 2021-09-09 设计创作，主要内容包括：一种杠杆结构的弹热制冷系统及其制冷方法,制冷系统包括通过支点铰接在机架上的杠杆,杠杆一端通过连杆和电机连接,电机固定在机架一侧,机架另一侧沿竖直方向固定有滑轨,滑轨上放置一个滑轨滑块,该滑轨滑块和杠杆的另一端分别与弹热材料的两端连接；杠杆在电机的驱动下绕其支点旋转,弹热材料在杠杆和滑轨滑块的带动下同时产生水平和竖直方向的位移；弹热材料上方设有热端散热器,下方设置冷藏发泡箱,弹热材料在应力加载拉伸状态下和上方的热端散热器接触散热,热端散热器的热量向环境释放,弹热材料在应力卸载收缩状态下和下方的冷藏发泡箱接触并释放冷量。本发明能实现加载方式的优化,减小外界提供的驱动力,实现制冷系统的高效、紧凑。(A kind of lever structure elastic thermal refrigerating system and its refrigerating method, the refrigerating system includes the lever hinged on framework through the fulcrum, one end of the lever is connected with electrical machinery through the tie rod, the electrical machinery is fixed on one side of framework, another side of framework is fixed with the slide rail along the vertical direction, place a slide rail slide block on the slide rail, another end of slide rail slide block and lever is connected with both ends of the elastic thermal material separately; the lever rotates around the pivot of the lever under the drive of the motor, and the elastic heat material is driven by the lever and the slide rail slide block to simultaneously generate displacement in the horizontal direction and the vertical direction; the elastic heating material is provided with a hot end radiator above, a refrigeration foaming box below, the elastic heating material is in contact with the hot end radiator above to dissipate heat in a stress loading stretching state, the heat of the hot end radiator is released to the environment, and the elastic heating material is in contact with the refrigeration foaming box below to release cold in a stress unloading contraction state. The invention can realize the optimization of the loading mode, reduce the driving force provided by the outside and realize the high efficiency and the compactness of the refrigerating system.)

1. The elastic heating refrigeration system with the lever structure is characterized by comprising a lever (104) hinged to a rack (101) through a fulcrum, wherein one end of the lever (104) is connected with a motor (102) through a connecting rod (103), the motor (102) is fixed on one side of the rack (101), a sliding rail (109) is fixed on the other side of the rack (101) along the vertical direction, a sliding rail sliding block (108) is arranged on the sliding rail (109), and the sliding rail sliding block (108) and the other end of the lever (104) are respectively connected with two ends of an elastic heating material (105); the lever (104) is driven by the motor (102) to rotate around a pivot of the lever, and the elastic heating material (105) is driven by the lever (104) and the sliding rail sliding block (108) to simultaneously displace in horizontal and vertical directions; the hot end radiator (106) is arranged above the elastic heating material (105), the refrigerating foaming box (107) is arranged below the elastic heating material, the elastic heating material (105) is in contact with the hot end radiator (106) above to radiate heat in a stress loading stretching state, the heat of the hot end radiator (106) is released to the environment, and the elastic heating material (105) is in contact with the refrigerating foaming box (107) below to release cold in a stress unloading contraction state.

2. The lever-structured missile thermal refrigeration system of claim 1, wherein: the connecting rod (103) moves along the horizontal direction under the driving of the motor (102), one end of the connecting rod (103) is of a spherical structure, a groove body is formed in one end of the lever (104) along the length direction, and the spherical structure at one end of the connecting rod (103) can move in the groove body at one end of the lever (104).

3. The lever-structured missile thermal refrigeration system of claim 1, wherein: the motor (102) is a linear motor, a rotating motor combined ball screw mechanism, an electric push rod or an electric cylinder.

4. The lever-structured missile thermal refrigeration system of claim 1, wherein: the elastic thermal material (105) is fixed on the sliding rail sliding block (108) and the lever (104) in a screw and nut screwing or perforation winding mode.

5. The lever-structured missile thermal refrigeration system of claim 1, wherein: the supporting point is provided by a supporting upright post, one end of the supporting upright post is fixed with the rack (101), and the other end of the supporting upright post is hinged with the middle part of the lever (104).

6. The lever-structured missile thermal refrigeration system of claim 1, wherein: the frame (101) is of a frame structure, and the refrigeration foaming box (107) and the hot end radiator (106) are fixed on the frame (101).

7. The lever-structured missile thermal refrigeration system of claim 1, wherein: when the elastic heating material (105) is deformed under the driving of the motor, the stretching force at one side of the elastic heating material (105) is directly provided by the motor (102) through the lever (104) and the connecting rod (103), and the stretching force at the other side is provided by the reaction force of the rack (101) through the sliding rail sliding block (108).

8. A refrigeration method of a spring heating refrigeration system based on the lever structure of any one of claims 1 to 7, characterized by comprising the following steps:

the motor (102) drives the connecting rod (103) to move along the horizontal direction, the connecting rod (103) pushes the lever (104) to rotate around a pivot of the lever, the lever (104) provides tensile force to enable the elastic thermal material (105) to deform, the sliding rail sliding block (108) moves upwards under the driving of the elastic thermal material (105), the distance between one end, connected with the elastic thermal material (105), of the lever (104) and the sliding rail sliding block (108) is continuously increased, the elastic thermal material (105) is subjected to tensile stress provided by the lever (104) and the sliding rail sliding block (108) to generate martensite phase change, latent heat in the phase change process is released, and the temperature of the elastic thermal material (105) is increased; during the stretching process, the elastic heating material (105) continuously moves upwards and finally contacts with a hot end radiator (105) above, and further releases heat to the environment;

the connecting rod (103) drives the elastic heating material (105) to leave the upper hot end radiator (106) under the reverse motion of the motor (102), the lever (104) rotates reversely to drive the elastic heating material (105) to recover the original length, the stress on the elastic heating material (105) is continuously reduced and moves downwards, the stress reduction process is accompanied by the reverse phase change of the elastic heating material (105), the temperature of the elastic heating material (105) is continuously reduced and is finally contacted with a lower refrigeration foaming box (107), and the cold energy is released under the stress unloading state;

the elasto-thermal material (105) completes the refrigeration by repeated contact with the hot side heat sink (105) and the refrigerated foam box (107).

Technical Field

The invention relates to the field of refrigeration and air conditioning, in particular to a lever-structured elastic heating refrigeration system and a refrigeration method thereof.

Background

The United nations climate Change Committee issued the IPCC Special report of 1.5 ℃ for global warming in 2018 shows that the global air temperature is increased by 1.5 ℃ compared with the level before industrialization at present, and environmental problems caused by climate warming include glacier melting, sea level rising, ozone layer destruction, rainwater acidification and the like. CFCs and HCFCs refrigerants used in the traditional vapor compression refrigeration cycle have serious damage to the ozone layer, and HFCs refrigerants have high greenhouse effect potential value although being not damaged to the ozone layer as substitutes of the CFCs and HCFCs refrigerants. China, the largest HFCs refrigerant producing country worldwide, has promised to achieve carbon peak reaching 2030 and carbon neutralization 2060.

The elastic heating refrigeration technology is taken as a novel solid-state refrigeration technology and is regarded as the most effective scheme for replacing the traditional vapor compression refrigeration cycle, the used elastic heating material has the latent heat of phase change as high as 31J/g and the high temperature difference effect of phase change, and is more than one order of magnitude of magnetic refrigeration which is most widely researched at present.

However, the application and popularization of the elastic heating refrigeration have many challenges, mainly including heat transfer, too large driving force required by the elastic heating material, and the like, and most of the existing technologies adopt a plurality of motors to realize the stretching and unloading process of the elastic heating material and the process of contacting the elastic heating material with a heat source heat sink, so that the refrigeration system has many moving parts and complex composition; in addition, the efficient transfer of heat and cold released by the elastothermal material requires reasonable system design and higher system processing and assembling processes. Based on the above problems, the breakthrough of the field of the elastic heating refrigeration technology requires the optimization of the integrated system flow and the loading mode, so that the latent heat of the elastic heating material is further utilized, the driving force provided by the outside is reduced, and the high efficiency and the compactness of the refrigeration system are realized.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a lever-structured elastic heating refrigeration system and a refrigeration method thereof, so that the optimization of a loading mode is realized, the driving force provided by the outside is reduced, and the high efficiency and the compactness of the refrigeration system are realized.

In order to achieve the purpose, the invention has the following technical scheme:

a kind of lever structural elastic thermal refrigerating system, including the lever hinged on stander through the fulcrum, one end of the lever is connected with electrical machinery through the tie rod, the said electrical machinery is fixed on one side of stander, another side of stander is fixed with the slide rail along the vertical direction, place a slide rail slide block on the slide rail, another end of slide rail slide block and lever is connected with both ends of the elastic thermal material separately; the lever is driven by the motor to rotate around the pivot of the lever, and the elastic heating material is driven by the lever and the slide rail slide block to simultaneously generate displacement in the horizontal direction and the vertical direction; the elastic heating material is provided with a hot end radiator above, a refrigeration foaming box below, the elastic heating material is in contact with the hot end radiator above to dissipate heat in a stress loading stretching state, the heat of the hot end radiator is released to the environment, and the elastic heating material is in contact with the refrigeration foaming box below to release cold in a stress unloading contraction state.

As a preferred scheme of the elastic heating refrigeration system, the connecting rod moves in the horizontal direction under the driving of the motor, one end of the connecting rod is of a spherical structure, one end of the lever is provided with a groove body in the length direction, and the spherical structure at one end of the connecting rod can move in the groove body at one end of the lever.

As a preferred scheme of the elastic heating refrigeration system, the motor is a linear motor, a rotating motor combined ball screw mechanism, an electric push rod or an electric cylinder.

As a preferable scheme of the elastic heating refrigeration system, the elastic heating material is fixed on the sliding rail and the lever in a screw and nut screwing or perforation winding mode.

As a preferable scheme of the elastic heating refrigeration system, the fulcrum is provided by a support column, one end of the support column is fixed with the frame, and the other end of the support column is hinged with the middle part of the lever.

As a preferred scheme of the elastic heating refrigeration system, the frame is of a frame structure, and the refrigeration foaming box and the hot end radiator are fixed on the frame.

As a preferable scheme of the elastic heating refrigeration system, when the elastic heating material is deformed under the driving of a motor, the stretching force of one side of the elastic heating material is directly provided by the motor through a lever and a connecting rod, and the stretching force of the other side is provided by the reaction force of a rack through a sliding rail and a sliding block.

The invention also provides a refrigeration method of the elastic heating refrigeration system based on the lever structure, which comprises the following steps:

the motor drives the connecting rod to move along the horizontal direction, the connecting rod pushes the lever to rotate around the pivot of the lever, the lever provides stretching force to enable the elastic heat material to deform, the sliding rail sliding block moves upwards under the driving of the elastic heat material, the distance between one end of the connecting rod, connected with the elastic heat material, and the sliding rail sliding block is increased continuously, the elastic heat material is subjected to the stretching stress provided by the lever and the sliding rail sliding block to generate martensite phase change, latent heat in the phase change process is released, and the temperature of the elastic heat material is increased; in the stretching process, the elastic heating material continuously moves upwards and finally contacts with a hot end radiator above, and heat release is further released to the environment;

the connecting rod drives the elastic heating material to leave the upper hot end radiator under the reverse motion of the motor, the lever rotates reversely to drive the elastic heating material to recover the original length, the stress on the elastic heating material is continuously reduced and moves downwards, the stress reduction process is accompanied with the reverse phase change of the elastic heating material, the temperature of the elastic heating material is continuously reduced and finally contacts with a lower refrigeration foaming box, and the cold quantity is released under the stress unloading state;

the elastic heating material is repeatedly contacted with a hot end radiator and a refrigeration foaming box to finish refrigeration.

Compared with the prior art, the invention has the following beneficial effects: through the lever structure, the process of stretching and unloading the elastic and thermal material driven by a single motor and contacting with a hot end radiator and a refrigeration foaming box is realized, the number of moving parts is simplified, the motor purchasing and equipment processing cost is greatly reduced, the device is more compact, a pure solid refrigeration system is adopted, the efficient transmission of cold and heat is realized, and the layout complexity of the system is further simplified.

Drawings

FIG. 1 is a schematic front view of a lever configuration reheat refrigeration system of the present invention in contact with a hot side heat sink in a loaded state;

FIG. 2 is a schematic front view of the lever-structured elasto-thermal refrigeration system of the present invention in contact with a refrigerated foam box in an unloaded condition;

FIG. 3 is a schematic diagram of the cycling temperature-entropy for the refrigeration system of the present invention;

in the drawings: 101-a frame; 102-a motor; 103-connecting rod; 104-a lever; 105-a thermo-elastic material; 106-hot side heat sink; 107-refrigerated foam boxes; 108-a slide rail slider; 109-sliding rail.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the lever-structured resilient heating refrigeration system according to the embodiment of the present invention includes a frame 101 having a frame-type structure, and a lever 104 is hinged to the frame 101 through a fulcrum provided by a support pillar, one end of the support pillar is fixed to the frame 101, and the other end is hinged to a middle portion of the lever 104. One end of the lever 104 is connected with the motor 102 through the connecting rod 103, and the motor 102 can be a linear motor, a rotating motor combined ball screw mechanism, an electric push rod or an electric cylinder and the like. The motor 102 is fixed on one side of the frame 101, a slide rail 109 is fixed on the other side of the frame 101 along the vertical direction, a slide rail slider 108 is placed on the slide rail 109, the slide rail slider 108 and the other end of the lever 104 are respectively connected with two ends of the elastic thermal material 105, and the elastic thermal material 105 can be fixed on the slide rail slider 108 and the lever 104 by screwing through screws and nuts or by a perforation winding mode. The connecting rod 103 is driven by the motor 102 to move along the horizontal direction, one end of the connecting rod 103 is of a spherical structure, a groove body is formed in one end of the lever 104 along the length direction, and the spherical structure at one end of the connecting rod 103 can move in the groove body at one end of the lever 104. The lever 104 rotates around the pivot thereof under the driving of the motor 102, and the elastic thermal material 105 is driven by the lever 104 and the slide rail slider 108 to simultaneously generate displacement in the horizontal and vertical directions; the hot end radiator 106 is arranged above the elastic heating material 105, the refrigeration foaming box 107 is arranged below the elastic heating material 105, and the refrigeration foaming box 107 and the hot end radiator 106 are fixed on the frame 101. The elastic heating material 105 is in contact with the hot end radiator 106 above to radiate heat in a stress loading stretching state, the heat of the hot end radiator 106 is released to the environment, and the elastic heating material 105 is in contact with the refrigerated foaming box 107 below to release cold in a stress unloading shrinking state. When the elastic heating material 105 is deformed under the driving of the motor, the tensile force of one side of the elastic heating material 105 is directly provided by the motor 102 through the lever 104 and the connecting rod 103, and the tensile force of the other side is provided by the reaction force of the rack 101 through the sliding rail 108.

The embodiment also provides a refrigeration method of the elastic heating refrigeration system based on the lever structure, which comprises the following steps:

(1) while applying a tensile stress to the elastically-heating material 105 in an initial state, the elastically-heating material 105 is continuously moved upward, and when the elastically-heating material 105 is stretched to a given deformation amount, as shown in fig. 1, the elastically-heating material 105 in a fully loaded state is in contact with the upper hot-end heat sink 106;

(2) the elasto-thermal material 105 in the fully loaded state undergoes a phase change and releases latent heat, which is released into the ambient heat sink through the hot-side heat sink 106;

(3) when the heat is completely released and the temperature of the elastic thermal material 105 is restored to the ambient temperature, the stress applied to the elastic thermal material 105 is relieved, and the elastic thermal material 105 starts to restore the original length and continuously moves downwards until the elastic thermal material 105 restores the original length and is in contact with the lower refrigerated foaming box 107, as shown in fig. 2;

(4) the elastic thermal material 105 recovers its original length and is accompanied by a reverse phase transition, the reverse phase transition process is accompanied by a continuous decrease in the temperature of the elastic thermal material 105, and after the elastic thermal material 105 and the refrigerated foam box 107 are brought into contact with each other, heat is absorbed from the refrigerated foam box 107, thereby cooling the object in the refrigerated foam box 107.

And (5) repeating the steps (1) to (4) to finish the elastic heating refrigeration process.

The change relationship between the phase change process temperature and the entropy of the elastic heating material 105 in the refrigeration method is shown in figure 3:

the elastically heated material at normal temperature is located at point 1 in fig. 3, which indicates that the elastically heated material 105 is in the austenite phase in the initial state; when the elastic heating material 105 is stretched by an external force, the stress is continuously increased until the elastic heating material 105 is transformed from austenite phase to martensite phase, and the transformation process is accompanied by the temperature increase of the elastic heating material 105, such as the process from 1 point to 3 points in the figure 3; the elasto-thermal material 105 in the 3-point martensite state and the hot-side heat sink 106 contact and release heat, and the heat release process is accompanied by the continuous decrease of the temperature of the elasto-thermal material 105 to the ambient temperature, as in the process from 3 points to 4 points in fig. 3; when the elastic thermal material 105 is cooled to the ambient heat sink temperature, the external stress is unloaded, the elastic thermal material 105 leaves the hot-end radiator, the original length is recovered, meanwhile, the elastic thermal material 105 is subjected to reverse phase transformation from a martensite phase to an austenite phase, the process is accompanied by the continuous reduction of the temperature of the elastic thermal material 105, which corresponds to the process from 4 to 6 points in fig. 3, when the temperature of the elastic thermal material 105 is reduced to a minimum value, the elastic thermal material 105 is in contact with the refrigeration foaming box 107 and absorbs the heat of the object in the refrigeration box 107, the temperature of the elastic thermal material 105 is continuously increased in the process until the temperature reaches the temperature of the low-temperature heat source in the refrigeration foaming box 107, the refrigeration process is finished, which corresponds to 6 to 1 point in fig. 3, and the refrigerating capacity generated in the refrigeration process corresponds to the dotted line part in fig. 3.

In order to realize the missile thermal refrigeration system of the missile thermal refrigeration method, the specific loading mode comprises the following steps:

as shown in fig. 1, a lever 104 is fixed on a frame 101 through a fulcrum, a motor 102 is fixedly connected to one side of the frame 101, the types of the motor include a linear motor, a rotary motor and ball screw mechanism, an electric push rod or an electric cylinder, etc., an output shaft of the motor 102 is connected with a connecting rod 103, one end of the connecting rod 103 is provided with a spherical structure, the structure can freely move in a groove body at one end of the lever 104, and therefore, the movement direction of the connecting rod 103 is always kept horizontal while the connecting rod 103 drives the lever 104 to rotate;

a slide rail 109 is fixedly connected to the other side of the rack 101, a slide rail slider 108 is arranged on the slide rail 109, and the slide rail slider 108 can freely move along the vertical direction of the slide rail 109;

one end of the slide rail slide block 108 and one end of the lever 104 are respectively connected with two ends of the elastic thermal material 105, the shape of the elastic thermal material can be filiform, plate-shaped or corrugated, and the connection mode comprises fastening by using screws and nuts or perforating and winding on the slide rail slide block and the lever, and the like;

the hot end radiator 106 is arranged above the elastic heating material 105, the refrigerated foaming box 107 is arranged below the elastic heating material 105, the elastic heating material 105 is in contact with the hot end radiator 106 above to radiate heat under the stress loading stretching state, the heat of the hot end radiator 106 is released to the environment, and the elastic heating material 105 is in contact with the refrigerated foaming box 107 below to release cold energy under the stress unloading contraction state.

An output shaft of the motor 102 drives the lever 104 to rotate around a pivot point thereof through the connecting rod 103, the elastic heat material 105 is driven by the lever 104 and the slide rail slide block 108 to simultaneously generate horizontal and vertical displacement, the connecting rod 103 moves rightwards to drive the lever 104 to rotate anticlockwise, and the elastic heat material 105 is continuously stretched and gradually moves towards the upper hot end heat radiator 106; the link 103 moves to the left to drive the lever 104 to rotate clockwise, and the length of the elastic heating material 105 is gradually reduced and moves to the lower refrigerating foaming box 107.

The invention provides driving force through a single motor, drives the elastic heating material to generate phase change refrigeration and realizes high-efficiency transmission of refrigeration capacity, the refrigeration process is environment-friendly and pollution-free, and the system has high efficiency and simple and reliable structure while meeting sustainable development.

The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and it should be understood by those skilled in the art that the technical solution can be modified and replaced by a plurality of simple modifications and replacements without departing from the spirit and principle of the present invention, and the modifications and replacements also fall into the protection scope covered by the claims.