阅读说明：本技术 一种铁路冷链集装器用涡环制冷装置 (Vortex ring refrigerating device for railway cold chain container ) 是由 王辉 付爽 陈一哲 华林 于 2019-10-28 设计创作，主要内容包括：本发明公开了一种铁路冷链集装器用涡环制冷装置,包括一个或多个涡环生成装置,每个涡环生成装置包括依次连接的主腔体和收缩喷管,主腔体内横向布置有扇板装置,扇板装置将主腔体横向分隔成送风腔和冷气储存腔,送风腔的出口端与收缩喷管的进口端对接；扇板装置包括内扇板、外扇板、转轴和扇板驱动机构,内扇板和外扇板依次叠放套设于转轴上,内扇板与转轴直接连接,外扇板通过轴承与转轴连接,与主腔体连接固定,转轴与扇板驱动机构连接。本发明功能全面,有持续制冷与涡环制冷两种方式,通过涡环生成装置产生涡环,利用涡环自身保持性将冷气直接运输到物品表面进行强制制冷,减少能耗,提高制冷保温效率,适用于铁路冷链集装器长途运输使用。(The invention discloses a vortex ring refrigerating device for a railway cold chain container, which comprises one or more vortex ring generating devices, wherein each vortex ring generating device comprises a main cavity body and a contraction spray pipe which are sequentially connected, a fan plate device is transversely arranged in the main cavity body, the main cavity body is transversely divided into an air supply cavity and a cold air storage cavity by the fan plate device, and the outlet end of the air supply cavity is butted with the inlet end of the contraction spray pipe; the fan plate device comprises an inner fan plate, an outer fan plate, a rotating shaft and a fan plate driving mechanism, wherein the inner fan plate and the outer fan plate are sequentially stacked and sleeved on the rotating shaft, the inner fan plate is directly connected with the rotating shaft, the outer fan plate is connected with the rotating shaft through a bearing and fixedly connected with the main cavity body, and the rotating shaft is connected with the fan plate driving mechanism. The invention has comprehensive functions, has two modes of continuous refrigeration and vortex ring refrigeration, generates the vortex ring by the vortex ring generating device, directly transports cold air to the surface of an article by utilizing the self-retentivity of the vortex ring for forced refrigeration, reduces energy consumption, improves refrigeration and heat preservation efficiency, and is suitable for long-distance transportation of the railway cold chain container.)

1. A kind of railway cold chain container uses the vortex ring refrigerating plant, characterized by, including one or more vortex ring generating devices that arrange side by side, every vortex ring generating device includes main cavity body and shrink spray pipe that connect sequentially, there are fan plate apparatuses horizontally in the main cavity body, the fan plate apparatus separates the main cavity body into air supply cavity and cold air storage cavity horizontally, the outlet end of the air supply cavity is butted with entrance point of the shrink spray pipe;

the fan plate device comprises an inner fan plate, an outer fan plate, a rotating shaft and a fan plate driving mechanism, wherein the inner fan plate and the outer fan plate are sequentially stacked and sleeved on the rotating shaft, the inner fan plate is connected with the rotating shaft, the outer fan plate is connected with the rotating shaft through a bearing and fixedly connected with the main cavity body, the rotating shaft is connected with the fan plate driving mechanism, the fan plate driving mechanism drives the inner fan plate to rotate for a certain angle through the rotating shaft, blades of the inner fan plate and blades of the outer fan plate are staggered to form a complete disc to block a channel of the air supply cavity, and the blades of the inner fan plate and the blades of the outer fan plate are overlapped after the inner fan plate rotates for a certain angle again, so that the channel of the air supply cavity is.

2. The scroll ring refrigerating device for the railway cold chain container as claimed in claim 1, wherein the inner fan plate and the outer fan plate each comprise a plurality of blades uniformly arranged along the circumferential direction, the number and size of the blades of the inner fan plate and the blades of the outer fan plate are the same, and the number of the blades is 3 or 4.

3. The scroll ring refrigerating device for the railway cold chain container as claimed in claim 1, wherein the fan plate driving mechanism comprises a stepping motor, the stepping motor is connected with the rotating shaft through a coupler, and the stepping motor is fixedly arranged inside the main cavity body through a stepping motor fixing frame.

4. The scroll ring refrigerating device for the railway cold chain container as claimed in claim 1, wherein a hose is connected between the main cavity and the contraction nozzle, the scroll ring refrigerating device for the railway cold chain container further comprises a steering driving device, and the steering driving device is connected with the contraction nozzle to drive the rotation direction of the contraction nozzle.

5. The scroll ring refrigerating device for the railway cold chain container as claimed in claim 4, wherein the steering driving device comprises a bogie, a transmission mechanism and a swinging mechanism, the bogie is arranged on the contraction nozzle, the swinging mechanism is connected with the bogie through the transmission mechanism, and the swinging mechanism drives the bogie to rotate through the transmission mechanism.

6. The scroll ring refrigerating device for the railway cold chain container as claimed in claim 5, wherein the transmission mechanism comprises a first gear and a second gear, the swing mechanism comprises a swing motor, an output shaft of the swing motor is connected with the first gear, the second gear is connected with the bogie, the first gear is meshed with the second gear, and the swing motor drives the bogie to rotate through the first gear and the second gear.

7. The scroll ring refrigerating apparatus for a railway cold chain container as claimed in claim 1, wherein the inlet end of the cold air storage chamber is provided with an axial flow fan.

8. The scroll ring refrigerating apparatus for a railway cold chain container according to claim 1, wherein a honeycomb plate is installed at an air inlet of the contraction nozzle or in the contraction nozzle.

9. The railway cold chain container vortex ring refrigerating device as claimed in claim 4, wherein the railway cold chain container vortex ring refrigerating device further comprises a frame, and the main cavity and the steering driving device are arranged on the frame.

10. The vortex ring refrigerating device for the railway cold chain container according to claim 9, wherein the frame comprises an outer frame and a side plate, one end of the main cavity is arranged on the outer frame, the side plate is arranged on one side of the main cavity, the side plate is fixedly connected with the main cavity, a supporting plate is sleeved on the outer wall of the main cavity, and the supporting plate is fixedly connected with the side plate.

Technical Field

The invention relates to the technical field of refrigeration and heat preservation, in particular to a vortex ring refrigeration device for a railway cold chain container.

Background

Railway transportation is a common transportation mode, plays an important role in the production and transportation process of materials, has the obvious advantages of large transportation amount, high transportation speed, low transportation cost, no influence of environmental climate and capability of transporting a large amount of heavy goods. However, there are two significant difficulties in railway cold chain transportation: the difficulty of the control of the refrigeration temperature of the goods in the transportation process consumes huge energy for refrigerating and preserving the transported goods.

The object to which the invention applies is a railway cold chain container produced for small-lot, large-lot transport, which is 2.5m long, 1m wide and 2m high. The container carries on the refrigeration and heat preservation from the small-scale compressor, it is a mechanical refrigeration container, but there are the following disadvantages: the refrigeration and heat preservation functions are single, and most of cold chain containers perform the refrigeration or heat preservation functions by changing the starting and stopping of a compressor set or adjusting the wind speed; the air outlet speed of the cold air is low and the cold air is easy to mix with the air, most of the cold air carries out heat convection with the air in the container, and the cold energy is dissipated in the transportation process; the energy consumption is high, the cold air generated by the compressor unit can not effectively realize heat exchange with the articles directly, and the working strength of the compressor is increased; the heat preservation performance is not enough, the temperature range of the articles during heat preservation can not be effectively ensured, and the quality of the transported articles is influenced.

Meanwhile, the traditional vortex ring generating device adopts a ball screw driving device or an electromagnet driving device to generate vortex rings, and the mode has the defects of complex control and unstable working state.

Disclosure of Invention

The invention aims to solve the technical problem that the prior art has the defects, and provides the vortex ring refrigerating device for the railway cold chain container.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a kind of railway cold chain container uses the vortex ring refrigerating plant, including one or more vortex ring generating devices that arrange side by side, every vortex ring generating device includes the body of main cavity and shrink spray pipe connected sequentially, the body of main cavity has a device of fan plate horizontally arranged, the body of main cavity of fan plate device separates the body of main cavity into air supply cavity and cold air storage cavity horizontally, the outlet end of the air supply cavity is butted with entrance point of the shrink spray pipe;

the fan plate device comprises an inner fan plate, an outer fan plate, a rotating shaft and a fan plate driving mechanism, wherein the inner fan plate and the outer fan plate are sequentially stacked and sleeved on the rotating shaft, the inner fan plate is directly connected with the rotating shaft, the outer fan plate is connected with the rotating shaft through a bearing and is fixedly connected with the main cavity body, the rotating shaft is connected with the fan plate driving mechanism, the fan plate driving mechanism drives the inner fan plate to rotate for a certain angle through the rotating shaft, blades of the inner fan plate and blades of the outer fan plate are staggered to form a complete disc to block a channel of the air supply cavity, the blades of the inner fan plate and the blades of the outer fan plate are overlapped after the inner fan plate rotates for a certain angle again, and the channel of the air supply cavity is.

According to the technical scheme, the inner fan plate and the outer fan plate respectively comprise a plurality of blades which are uniformly arranged along the circumferential direction, the number and the size of the blades of the inner fan plate are the same as those of the blades of the outer fan plate, and the number of the blades is 3 or 4.

According to the technical scheme, the fan plate driving mechanism comprises the stepping motor, the stepping motor is connected with the rotating shaft through the coupler, and the stepping motor is fixedly arranged inside the main cavity body through the stepping motor fixing frame.

According to the technical scheme, the hose is connected between the main cavity and the contraction spray pipe, and the vortex ring refrigerating device for the railway cold chain container further comprises a steering driving device which is connected with the contraction spray pipe to drive the rotation direction of the contraction spray pipe.

According to the technical scheme, the steering driving device comprises a steering frame, a transmission mechanism and a wind swinging mechanism, the steering frame is arranged on the contraction spray pipe, the wind swinging mechanism is connected with the steering frame through the transmission mechanism, and the wind swinging mechanism drives the steering frame to rotate through the transmission mechanism.

According to the technical scheme, the transmission mechanism comprises a first gear and a second gear, the wind swinging mechanism comprises a wind swinging motor, an output shaft of the wind swinging motor is connected with the first gear, the second gear is connected with the bogie, the first gear is meshed with the second gear, and the wind swinging motor drives the bogie to rotate through the first gear and the second gear.

According to the technical scheme, the inlet end of the cold air storage cavity is provided with the axial flow fan.

According to the technical scheme, the honeycomb plate is arranged at the air inlet of the contraction spray pipe or in the contraction spray pipe.

According to the technical scheme, the vortex ring refrigerating device for the railway cold chain container further comprises a frame, and the main cavity and the steering driving device are arranged on the frame.

According to the technical scheme, the frame includes outer frame and curb plate, and the one end of the main cavity body sets up on outer frame, and the curb plate sets up in the one side of the main cavity body, and the curb plate is fixed with main cavity body coupling, and the cover is equipped with the backup pad on the outer wall of the main cavity body, and the backup pad is connected fixedly with the curb plate.

The invention has the following beneficial effects:

1. the invention can transmit the cold air to the surface of the appointed object in the form of the vortex ring through the self-retaining property of the vortex ring, reduces the heat exchange between the cold air and the air in the container, prevents the dissipation of the cold air in the transportation process, and reduces unnecessary energy loss by directly exchanging heat with the object to be refrigerated; the invention can realize two modes of continuous refrigeration and vortex ring refrigeration by controlling the rotation of the stepping motor through the computer, change the refrigeration and heat preservation modes according to the requirements and meet different requirements of various articles; the vortex ring generating device and the cold air storage cavity are integrated, so that the space required by the device is reduced, and the requirement on miniaturization of the railway cold chain container is met; the stepping motor is used for directly driving the inner fan plate to rotate at the same rotating speed and rotating direction through the coupler, so that the fan plate group is opened and closed to generate the vortex ring, the stepping motor can accurately and quickly control the generation of the vortex ring, and the stepping motor has the advantage of being more convenient and faster than the traditional ball screw driving device or electromagnet driving device to generate the vortex ring; the invention has comprehensive functions, has two modes of continuous refrigeration and vortex ring refrigeration, generates the vortex ring by the vortex ring generating device, directly transports cold air to the surface of an article by utilizing the self-retentivity of the vortex ring for forced refrigeration, reduces energy consumption, improves refrigeration and heat preservation efficiency, and is suitable for long-distance transportation of the railway cold chain container.

2. The corrugated hose is arranged on the conveying cavity part, and the air swinging motor is used for driving the gear to change the air outlet angle of the contraction spray pipe, so that the integral large-amplitude movement is avoided, and the device is suitable for small cold chain containers; the air swing motor, the stepping motor and the axial flow fan which correspond to each conveying cavity are mutually independent, so that the device can refrigerate different areas of the cold chain container as required in four modes of four different angles, has more comprehensive functions, and is suitable for refrigerating and heat-insulating requirements of different articles in the same container.

Drawings

FIG. 1 is a schematic structural diagram of a vortex ring refrigerating device for a railway cold chain container in an embodiment of the invention;

FIG. 2 is an exploded view of a vortex ring generating apparatus in an embodiment of the present invention;

FIG. 3 is an elevational view of the fan panel assembly in a closed position in accordance with an embodiment of the present invention;

FIG. 4 is an elevational view of the fan panel assembly in an open position in accordance with an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a steering driving device in a normal state according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a steering driving device in a state in which a tuyere is directed downward in the embodiment of the present invention;

FIG. 7 is a schematic structural view of a driving device for turning the tuyere in a horizontal state according to an embodiment of the present invention;

in the figure, 1-an outer frame, 2-a cold air storage cavity, 3-a support plate, 4-a side plate, 5-a corrugated hose, 6-a bogie, 7-a contraction spray pipe, 8-an axial fan, 9-a swinging motor, 10-a pinion, 11-a bull gear, 12-an inner fan plate, 13-an outer fan plate, 14-a bearing, 15-a honeycomb plate, 16-a rotating shaft, 17-a coupler, 18-a stepping motor and 19-a stepping motor fixing frame.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Referring to fig. 1 to 7, in an embodiment of the present invention, a scroll ring refrigeration device for a railway cold chain container includes one or more scroll ring generation devices arranged side by side, each scroll ring generation device includes a main cavity and a contraction nozzle 7 connected in sequence, a fan plate device is transversely arranged in the main cavity, the fan plate device transversely divides the main cavity into an air supply cavity and a cold air storage cavity 2, and an outlet end of the air supply cavity is in butt joint with an inlet end of the contraction nozzle 7;

the fan plate device comprises an inner fan plate 12, an outer fan plate 13, a rotating shaft 16 and a fan plate driving mechanism, wherein the inner fan plate 12 and the outer fan plate 13 are sequentially stacked and sleeved on the rotating shaft 16, the inner fan plate 12 is directly connected with the rotating shaft 16, the outer fan plate 13 is connected with the rotating shaft 16 through a bearing 14 and fixedly connected with the main cavity body, the rotating shaft 16 is connected with the fan plate driving mechanism, and after the fan plate driving mechanism drives the inner fan plate 12 to rotate around the rotating shaft 16 for a certain angle, blades of the inner fan plate 12 and blades of the outer fan plate 13 are distributed at intervals in a staggered mode to form a complete disc to block a channel of an air supply cavity, and after the inner fan plate 12 rotates for a certain angle again, the blades of the inner fan plate 12 and the blades of the outer fan plate 13 are overlapped.

Further, the inner fan plate 12 and the outer fan plate 13 both comprise a plurality of blades uniformly arranged along the circumferential direction, the number and the size of the blades of the inner fan plate 12 are the same as those of the blades of the outer fan plate 13, and the number of the blades is 3 or 4; when the number of the blades is 4, the included angle between the adjacent blades is 45 degrees, and when the number of the blades is 3, the included angle between the adjacent blades is 60 degrees.

Further, the fan plate driving mechanism comprises a stepping motor 18, the stepping motor 18 is connected with the rotating shaft 16 through a coupler 17, and the stepping motor 18 is fixedly arranged in the cold air storage cavity 2 through a stepping motor fixing frame 18; the required volume of the device is reduced.

Furthermore, a hose is connected between the main cavity and the contraction nozzle 7, and the vortex ring refrigerating device for the railway cold chain container further comprises a steering driving device which is connected with the contraction nozzle 7 to drive the contraction nozzle 7 to rotate.

Further, the hose is a corrugated hose 5.

Furthermore, the steering driving device comprises a steering frame 6, a transmission mechanism and a wind swinging mechanism, wherein the steering frame 6 is arranged on the contraction spray pipe 7, the wind swinging mechanism is connected with the steering frame 6 through the transmission mechanism, and the wind swinging mechanism drives the steering frame 6 to rotate through the transmission mechanism.

Further, the transmission mechanism comprises a first gear and a second gear, the wind swinging mechanism comprises a wind swinging motor 9, an output shaft of the wind swinging motor 9 is connected with the first gear, the second gear is connected with the bogie 6, the first gear is meshed with the second gear, and the wind swinging motor 9 drives the bogie 6 to rotate through the first gear and the second gear.

Further, the second gear is a large gear 11 and the first gear is a small gear 10.

Further, an axial flow fan 8 is arranged at the inlet end of the cold air storage cavity 2; the axial flow fan 8 is arranged at an air inlet of the main cavity, and the rotating speed of the axial flow fan 8 is matched with the working state of the stepping motor 18, so that the transmission speed of the vortex ring and the size of the vortex ring structure are changed.

Further, a honeycomb plate 15 is arranged at an air inlet of the contraction spray pipe 7; the honeycomb plate 15 is used for rectifying the air flow after the corrugated hose 5 is bent, so that the air flow uniformly flows out to form a vortex ring with stable structure.

Further, the railway cold chain container used vortex ring refrigerating plant still includes the frame, and main cavity body and steering drive device set up on the frame.

Further, the frame includes outer frame 1 and curb plate 4, and the one end of the main cavity body sets up on outer frame 1, and curb plate 4 sets up in one side of the main cavity body, and curb plate 4 is fixed with the main cavity body coupling, and the cover is equipped with backup pad 3 on the outer wall of the main cavity body, and backup pad 3 is connected fixedly with curb plate 4.

Further, the swing motor 9 is fixedly arranged on the side plate 4, and the second gear is fixedly arranged on the side plate 4 through a rotating shaft.

In one embodiment of the invention, the invention comprises four main cavities, each main cavity is internally provided with a group of fan plates, the fan plates divide the main cavity into a cold air storage cavity 2 and an air supply cavity, each fan plate group comprises an inner fan plate 12 and an outer fan plate 13, the inner fan plate 12 is rigidly connected with a rotating shaft 16, the outer fan plates 13 are fixed in the main cavity and are connected with one end of the rotating shaft 16 through a bearing 14 in a rolling way, the other end of the rotating shaft 16 is connected with a stepping motor 18 through a coupler 17, the stepping motor 18 is fixed in the cold air storage cavity 2 through a stepping motor fixing frame 18, the middle section of the air supply cavity is provided with a corrugated hose 5, the corrugated hose 5 is connected with an air inlet end of a contraction spray pipe 7, the air inlet end of the contraction spray pipe 7 is provided with a honeycomb plate 15 for rectifying cold air, a steering frame 6 is arranged outside the contraction spray pipe 7 for supporting and steering, the steering frame 6 is rigidly connected, the swing motor 9, the pinion 10 and the bull gear 11 are all arranged inside the side plate 4; an axial fan 8 is installed at the inlet of the cold air storage chamber 2, and the main chamber is supported by the support plate 3.

The inner fan plate 12, the outer fan plate 13, the bearing 14, the rotating shaft 16, the stepping motor 18 and the stepping motor fixing frame 18 jointly form a vortex ring generating device, the fan plate group consists of an inner fan plate and an outer fan plate, and the inner fan plate 13 and the outer fan plate 13 consist of four fan-shaped blades which are centrosymmetric.

Because the outer fan plate 13 is fixed in the main cavity, when the stepping motor 18 rotates the blades of the inner fan plate 12 to coincide with the blades of the outer fan plate 13, the fan plate group is in an open state, and at the moment, the cold air in the cold air storage cavity 2 can enter the air supply cavity; when the blades of the inner fan plate 12 and the blades of the outer fan plate 13 are at an angle of 45 degrees, the fan plate set is in a closed state, and at the moment, the cold air in the cold air storage cavity 2 cannot enter the air supply cavity. Different from the mode that the traditional vortex ring generating device adopts a piston device to extrude gas to generate a vortex ring, the device utilizes the characteristics of the combination of the inner fan plate 12 and the outer fan plate 13, and can realize continuous refrigeration and vortex ring refrigeration: the axial fan 8 sucks cold air into the cold air storage cavity 2, if the blades of the inner fan plate 12 are rotated to be overlapped with the blades of the outer fan plate 13 by controlling the stepping motor 18 through the computer, the fan plate group keeps an open state, the cold air enters the air supply cavity from the cold air storage cavity 2 in a continuous mode, and forms stable and continuous cold air flow at the pipe orifice after passing through the corrugated hose 5, the honeycomb plate 15 and the compression spray pipe, and at the moment, no vortex ring is formed; if the stepping motor 18 is controlled by the computer to drive the blades of the inner fan plate 12 to rotate in a period of 90 degrees, so that the fan plate groups are opened and closed at intervals, cold air flows enter the air supply cavity from the cold air storage cavity 2 at intervals, flows through the corrugated hose 5, the honeycomb plate 15 and the contraction spray pipe 7 and is sprayed out, the cold air sprayed out from the outlet of the contraction spray pipe 7 and surrounding static gas form a vortex ring with a stable structure due to the shearing action, and when the rotating speed and the frequency of the stepping motor 18 are changed, the transmission speed of the vortex ring and the structural size of the vortex ring can be changed. The transmission speed and the size of the vortex ring structure can be changed by changing the rotating speed and the frequency of the stepping motor 18. This device uses step motor 18 to directly drive interior fan board 12 through shaft coupling 17 and rotates with the same slew velocity and direction of rotation, realizes that the switching of fan board group produces the vortex ring, and step motor 18 can accurate quick control the formation of vortex ring, produces the vortex ring with traditional ball screw drive arrangement or electromagnet drive arrangement and compares and have more convenient advantage.

The steering driving device comprises a steering frame 6, a large gear 11, a small gear 10 and a swing motor 9. By utilizing the characteristic that the corrugated hose 5 can be freely bent in the axial direction, the swing motor 9 is used for driving the bogie 6 to drive the contraction nozzle 7 to rotate, so that the change of the transmission direction of the vortex ring is realized; the bogie 6 is rigidly connected with one end of a large gear 11 in the side plate 4, the other end of the large gear 11 is meshed with a small gear 10 controlled by a swing motor 9, the bogie 6 is driven by the rotation of the swing motor 9 to enable the contraction spray pipe 7 to turn, the swing motor 9 adjusts the turning angle under the control of a computer, and the swing motor 9, the small gear 10 and the large gear 11 are all arranged in the side plate 4.

The corrugated hose 5 can be freely bent along the axis, one end of the corrugated hose 5 is connected with an air outlet of the cold air storage cavity 2, the other end of the corrugated hose 5 is connected with a cold air inlet of the contraction spray pipe 7, the corrugated hose 5 and the contraction spray pipe 7 jointly form an air supply cavity, the contraction spray pipe 7 can rotate around the central point of the corrugated hose 5 through the swing air driving device, the air outlet direction of the vortex ring is changed, the axis direction of the main cavity is 45 degrees with the horizontal line, the corrugated hose 5 can be bent at most +/-60 degrees, and air supply refrigeration can be carried out on the whole range of the cold; the axis direction of the main cavity is 45 degrees with the horizontal direction, and the maximum bending angle of the contraction spray pipe 7 when the air outlet direction of the vortex ring is changed is reduced.

The inner fan plate 12 and the outer fan plate 13 are formed by four fan-shaped blades which are centrosymmetric, and the outer fan plate 13 is fixed in the main cavity.

The axial fan 8 is arranged on the outer frame 1 and sucks cold air into the cold air storage cavity 2, and the cold air forms a certain pressure intensity in the storage cavity, when the fan plate set is opened, the cold air can quickly enter the air supply cavity from the cold air storage cavity 2, the rotating speed of the axial fan 8 is matched with the working state of the stepping motor 18, and the change of the transmission speed of the vortex ring and the size of the vortex ring structure is realized.

The selection of the contraction nozzle 7 can increase the transmission speed of the vortex ring and prevent the vortex rings generated by adjacent equipment from interfering with each other.

The working principle of the invention is as follows:

as shown in fig. 1 and fig. 2, the scroll ring refrigerating device for a railway cold chain container of the present invention has an overall length of 480mm, a width of 970mm and a height of 420mm, is installed at the upper right part inside the railway cold chain container, and comprises four main cavities, each main cavity is internally provided with a set of fan plates, the fan plates divide the main cavity into a cold air storage cavity 2 and an air supply cavity, the fan plates comprise an inner fan plate 12 and an outer fan plate 13, the inner fan plate 12 is rigidly connected with a rotating shaft 16, the outer fan plate 13 is fixed inside the main cavity and is connected with one end of the rotating shaft 16 in a rolling manner through a bearing 14, the other end of the rotating shaft 16 is connected with a stepping motor 18 through a coupling 17, the stepping motor 18 is fixed inside the cold air storage cavity 2 through a stepping motor fixing frame 19, the middle section of the air supply cavity is provided with a corrugated hose 5, the corrugated hose 5 is connected with a contraction nozzle 7, the outside of the contraction spray pipe 7 is supported by a bogie 6, the bogie 6 is rigidly connected with one end of a big gear 11 inside the side plate 4, and the other end of the big gear 11 is meshed with a small gear 10 controlled by a swing motor 9; an axial fan 8 is arranged at the inlet of the cold air storage cavity 2, and the main cavity and the side plate 4 are both connected with the outer frame 1.

According to the invention, the corrugated hose 5 is arranged in the conveying cavity, the swing motor 9 is arranged in the side plate 4 to control the small gear 10 to be meshed with the large gear 11, the swing motor 9 is controlled by the computer to drive the large gear 11 to rotate, one end of the large gear 11 is connected with the bogie 6 outside the contraction spray pipe 7, the large gear 11 rotates to drive the contraction spray pipe 7 to rotate around the center of the corrugated hose 5, so that a cold air vortex ring generated by the device is accurately transmitted to the surface of an object, and the four swing motors 9 are not interfered with each other, so that the device can simultaneously perform vortex ring air supply refrigeration on an object storage area at four different angles, and various object storage requirements are met.

As shown in fig. 3 and 4, the vortex ring generating device of the present invention includes a fan plate set, a rotating shaft 16, a bearing 14, a coupling 17, a stepping motor 18, and a stepping motor fixing frame 19, where the fan plate set is composed of an inner fan plate 12 and an outer fan plate 13, the inner fan plate 12 and the outer fan plate 13 are both composed of four fan-shaped blades with central symmetry, when the computer controls the stepping motor 18 to drive the rotating shaft 16 to rotate through the coupling 17, the inner fan plate 12 rotates at the same angle and speed, when the blades of the inner fan plate 12 and the blades of the outer fan plate 13 overlap, the fan plate set is fully opened, cold air can freely enter the air supply chamber from the cold air storage chamber 2, and when the blades of the inner fan plate 12 and the outer fan plate 13 are at 45 °, the fan plate set is closed, and cold air cannot enter the air supply chamber from the.

The invention can carry on the continuous refrigeration and two kinds of modes of the vortex ring refrigeration through adjusting the fan plate group, the axial fan 8 rotates with the appropriate speed, when the inner fan plate 12 and blade of the outer fan plate 13 are disposed and kept motionless in 45 degrees, the fan plate group is in the full open state, the cold air can enter the air supply cavity from the cold air storage cavity 2 freely through the fan plate group at this moment, form the continuous cold air current after flowing through the corrugated hose 5, honeycomb panel 15, shrinking spray pipe 7; when the stepping motor 18 drives the inner fan plate 12 to rotate in a 90-degree cycle, the rotation stops once every 90-degree cycle, the fan plate set is in a closed-half-open-full-open-half-open-closed state in the period, the cold air in the cold air storage cavity 2 flows into the air supply cavity through the fan plate set in an intermittent mode instead of a continuous mode, when a small stream of cold air flows through the corrugated hose 5, the honeycomb plate 15 and the contraction nozzle 7 and is sprayed out, the cold air sprayed out of the outlet of the contraction nozzle 7 and the static air around form a vortex ring due to the shearing action.

As shown in fig. 5, 6 and 7, the corrugated hose 5 can be freely bent along the axis, one end of the corrugated hose 5 is connected with the air outlet of the air conditioning storage cavity 2, the other end of the corrugated hose is connected with the air conditioning inlet of the contraction spray pipe 7, the corrugated hose 5 and the contraction spray pipe 7 jointly form an air supply cavity, the contraction spray pipe 7 can rotate around the central point of the corrugated hose 5 through the air swinging driving device, the air outlet direction of the vortex ring is changed, the corrugated hose 5 can be bent at most +/-60 degrees, and air supply and refrigeration can be carried out on the whole range of the cold chain container. The wind swinging driving device is composed of a large gear 11, a small gear 10, a wind swinging motor 9 and a bogie 6, wherein the large gear 11, the small gear 10 and the wind swinging motor 9 are all installed inside the side plate 4, and the rotation direction and the rotation angle of the wind swinging motor 9 are controlled by a computer.

The axial flow fan 8, the stepping motor 18 and the matched air swing motor 9 in the four main cavities are independently controlled by a computer, the working processes of the four main cavities are independent, the rotating speed of the axial flow fan 8 is matched with the rotating speed of the stepping motor 18, and vortex rings with different speeds and sizes can be obtained by changing the rotating speed and the frequency of the stepping motor 18, so that the device can refrigerate different areas of the cold chain container as required in four modes of four different angles.

According to the invention, by utilizing the characteristics of the combination of the inner fan plate 12 and the outer fan plate 13 (when the blades of the inner fan plate 12 and the blades of the outer fan plate 13 are overlapped, the fan plate group is opened, and when the blades of the inner fan plate 12 and the blades of the outer fan plate 13 are at 45 degrees, the fan plate group is closed), two modes of continuous refrigeration and vortex ring refrigeration can be realized, and cold air is transported through a vortex ring structure, so that the cold air can be transported farther by virtue of the special stability characteristic of the vortex ring, the cold air can be directly transported to the surface of an object for forced convection heat exchange, and the refrigeration and heat preservation efficiency is improved; according to the invention, the stepping motor 18 is used for directly driving the inner fan plate 12 to rotate at the same rotating speed and rotating direction through the coupler 17, so that the fan plate group is opened and closed to generate the vortex ring, the stepping motor 18 can accurately and quickly control the generation of the vortex ring, and the device has the advantage of being more convenient and faster compared with the traditional ball screw driving device or electromagnet driving device for generating the vortex ring.

The specific working process of the invention is as follows:

the axial flow fan 8 rotates to suck the cool air into the cool air storage chamber 2 for storage and forms a certain pressure.

When the container needs to be rapidly refrigerated, the rotation speed of the axial flow fan 8 is adjusted to be maximum, the air speed of the cold air is maximum at the moment, the computer controls the stepping motor to enable the blades of the inner fan plate 12 and the blades of the outer fan plate 13 to be superposed, the fan plate set is in a fully open state, the cold air is sucked into the cold air storage cavity 2 by the axial flow fan 8, flows through the fan plate set and directly enters the air supply cavity, a stable and continuous cold air flow is formed at the pipe orifice after being rectified by the corrugated hose 5 and the honeycomb plate 15 and compressed by the spray pipe 7, and at the moment, a continuous refrigeration mode.

When the container is in a heat preservation stage or the requirement on the refrigerating speed is not high, the computer controls the stepping motor 18 to rotate at 90 degrees for one period, and the stepping motor 18 stops once when rotating at 90 degrees, the stepping motor 18 drives the rotating shaft 16 to rotate through the coupler 17, and the rotating shaft 16 drives the inner fan plate 12 to rotate at the same rotating speed and period. During the rotation of the inner fan plate 12, the fan plate set is in a closed-half-open-full-open-half-open-closed state, when the fan plate set is closed, the axial fan 8 is matched with the working state of the stepping motor 18, and the required air pressure is formed in the cold air storage cavity 2; when the fan plate group is opened, because the air pressure of the cold air storage cavity 2 is greater than that of the air supply cavity, when a small stream of cold air flows through the corrugated hose 5, the honeycomb plate 15 and the contraction spray pipe 7 and then is sprayed out, the cold air sprayed out of the outlet of the contraction spray pipe 7 and the surrounding static gas form a vortex ring with stable structure due to the shearing action, the operations are repeated, so that a continuous vortex ring is generated, and when the rotating speed and the frequency of the stepping motor are changed, the transmission speed of the vortex ring and the structural size of the vortex ring can be changed.

When the air outlet direction needs to be changed, the air swinging motor 9 in the side plate 4 is controlled to rotate through the computer, the pinion 10 on the air swinging motor 9 is meshed with one end of the large gear 11, the other end of the large gear 11 is rigidly connected with the rotating frame 6 which is connected with the outside of the contraction spray pipe 7, therefore, the rotating frame can be driven to rotate around the center of the corrugated hose 5 when the air swinging motor 9 rotates, the corrugated hose 5 can be bent at most +/-60 degrees, and air supply and refrigeration can be carried out on the whole range of the cold chain container.

The axial fan 8, the stepping motor 18 and the matched air swing motor 9 in the four main cavities are independently controlled by a computer, the working processes of the four main cavities are independent, the rotating speed of the axial fan 8 is matched with the rotating speed of the stepping motor 18, and vortex rings with different speeds and sizes can be obtained by changing the rotating speed and the frequency of the stepping motor 18, so that the device can refrigerate different areas of the cold chain container as required in four modes of four different angles.

The invention solves the defects of single function, high energy consumption, small air supply speed, unstable air supply, low refrigeration and heat preservation efficiency and the like of the traditional railway cold chain container. Can carry out intelligent air supply refrigeration and heat preservation according to article quantity and refrigeration demand to can realize lasting refrigeration and vortex ring refrigeration two kinds of modes, carry air conditioning through the vortex ring, utilize the retentivity of vortex ring self, directly carry the object surface with air conditioning and force the energy consumption that refrigeration can greatly reduced cold chain transportation. According to the invention, the stepping motor 18 is used for directly driving the inner fan plate 12 to rotate at the same rotating speed and rotating direction through the coupler 17, so that the fan plate group is opened and closed to generate the vortex ring, the stepping motor 18 can accurately and quickly control the generation of the vortex ring, and compared with the traditional ball screw driving device or electromagnet driving device for generating the vortex ring, the electromagnetic-driven vortex ring generating device has the advantage of being more convenient and faster

The above is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereby, and therefore, the present invention is not limited by the scope of the claims.