CN112158447A - High-cold anti-freezing heat preservation box and temperature control method thereof - Google Patents

Abstract

The invention provides a high-cold anti-freezing heat preservation box, which comprises: the side plates, the bottom plate and the box cover of the box body are composed of an outer heat-insulating layer, an inner heat-insulating layer and cold storage plates arranged in the inner heat-insulating layer, the side plates, the bottom plate and the box cover of the box body are arranged on at least one of the four side plates and the bottom plate of the box body and are positioned, an electric heating film or a graphene layer is arranged between the outer heat-insulating layer and the inner heat-insulating layer, a power supply connected with the electric heating film or the graphene layer, a temperature control module and an information module are arranged on the side plates of the box body, a first temperature sensor, a second temperature sensor and a third temperature sensor are arranged outside the box body, on the electric heating film or. The invention solves the problem that the existing insulation can is easy to generate supercooling to further cause the failure of vaccines or medicines when the medicines such as vaccines and the like are conveyed in cold regions. The invention can ensure that the box body is in a constant non-supercooling temperature range, and is particularly suitable for the delivery of medicines and vaccines in alpine regions.

Description

High-cold anti-freezing heat preservation box and temperature control method thereof

Technical Field

The invention relates to an alpine anti-freezing heat preservation box, and belongs to the technical field of transportation.

Background

The pharmaceutical industry is the industry related to the national demographics and is one of the most promising industries recognized all over the world at present. Along with the development of economy in China, the quality requirements on the medical products are also improved, and particularly the medical products which need to be refrigerated and stored are stricter. During the storage and transportation process of the medicine, proper environmental temperature needs to be maintained, and the medicine is ensured not to deteriorate and lose the efficacy. The cold storage medicine needs to be stored in a low-temperature environment, usually 0-20 ℃ (vaccine storage temperature is 2-8 ℃). And all links of the refrigerated medicine in transportation include transportation, storage, transportation loading and unloading and the whole cold chain is needed in the connection process, so that the drug effect of the refrigerated medicine is in a good state.

The box on the existing market mostly uses the coolant, for example CN201910525710.5 has proposed a portable heat preservation medicine box, utilizes phase change material to fill the heat preservation, is equipped with the colour development on the lid and marks the subsides, and the colour change through marking the subsides comes whether up to standard of medicine storage temperature in the direct judgement box body, can learn the temperature size in the box. Moreover, the medicine insulation boxes on the market generally seek long insulation time of cold accumulation materials so as to be beneficial to long-time cold storage transportation.

However, in cold seasons in winter, there are many technical problems in preventing the biological medicines sent to the plateau areas such as Qinghai, Ningxia, Xinjiang and Tibet in China and the heat preservation boxes sent to the areas such as inner Mongolia, Heilongjiang and Jilin, and the biological medicines cannot be transported when the environmental temperature exceeds-10 ℃ in winter, so that the transportation safety of the biological medicines cannot be guaranteed, and the transportation units of the biological medicines are regarded as a daunting.

The cold chain transport vehicle can not be directly sent to primary medical shops sometimes because of dispersed population and poor road conditions in some remote mountain areas in severe cold-10 ℃ to-30 ℃ environments in winter, and has no transport insulation box suitable for high and cold performance, so that biological medicines are likely to lose effectiveness when being sent, and the consumed labor cost and medical risks caused by the failure are huge. Therefore, the distribution and transportation of the biological medicines in the alpine regions need to use a heat-insulation transportation box which is suitable for the alpine heat-insulation special effect, thereby ensuring the safety of the biological medicines.

The cold insulation transportation mode or the cold accumulation transportation mode is usually adopted for cold storage transportation, and has the advantage of low cost, but the core technology is that on one hand, a cold storage agent with long cold insulation time is selected, on the other hand, the supercooling phenomenon needs to be reduced as much as possible, and the cold storage agent has larger thermal potential, however, the research finds that a phase change material is difficult to meet the requirements, the phase change material with larger thermal potential can generate higher supercooling phenomenon, or in order to reduce the supercooling phenomenon, the thermal potential is not ideal.

CN 103075856A discloses a novel energy-saving refrigeration temperature control box, which comprises a semiconductor refrigeration system, a 12V power supply system, a metal shell, a box fan and a heat preservation box body; the heat preservation box body comprises low-thermal-conductivity ceramic fiber paper, a double-layer high-density polyethylene sheet, an extruded polystyrene heat preservation plate and a double-layer aluminum alloy or stainless steel plate; thin-wall copper pipes are arranged in the middle of the double-layer aluminum alloy or stainless steel plate at intervals, and the interior of each thin-wall copper pipe contains a nano-composite phase change material. The nano composite phase change material comprises: hydroxyapatite, silicon dioxide and the like, n-dodecyl alkane, n-tetradecane, ethylene glycol, caproic acid, ammonia chloride and the like, and is compounded under the catalysis of an emulsifier by adopting a high-speed emulsifying machine or ultrasonic vibration, wherein the phase transition temperature is between-10 ℃ and 6 ℃; the nano composite phase change material added in the thin-wall copper pipe 7 accounts for 5 percent-8 percent of the total volume of the interior of the box body. The nano composite phase change material adopted by the refrigeration temperature control box is formed by integrating phase change materials, and has the following problems: 1. when the temperature of the phase-change material is-10 ℃, the temperature in the box body is lower than 0 ℃, and further, the vaccine or the medicine is frozen to be invalid; 2. the multiple phase-change materials are prepared by emulsifying and mixing through an emulsifier. However, after being frozen for many times, the phase change material can generate a layering phenomenon, the phase change heat can change, the phase change temperature is unstable, and the thermal stability performance is poor.

Therefore, the alpine anti-freezing heat preservation box can ensure the ideal storage temperature of the medicines in the box body, and can prevent the temperature in the box body from being lower than 0 ℃ caused by the excessively low external environment temperature in alpine regions, so that the medicines or vaccines are frozen to be the targets pursued by the technical personnel in the field.

Disclosure of Invention

The invention aims to solve the problem that the existing medicine insulation can is not suitable for medicine transportation in cold regions.

The invention also aims to solve the problems that the single phase-change material used for the cold storage plate in the insulation can not meet the requirements of heat potential and supercooling and the layering phenomenon is easily caused by the mixing of multiple phase-change materials.

In order to achieve the purpose, the invention adopts the technical scheme that: an alpine anti-freezing insulation can, comprising: box and case lid, curb plate and bottom plate and the case lid of box constitute its characterized in that by outer heat preservation and interior heat preservation and establish the intraformational cold storage board of interior heat preservation: the utility model discloses a temperature control device for solar water heater, including box, bottom plate, temperature control module, temperature sensor one, two, three are equipped with respectively to outside, electrical heating membrane or graphite alkene layer and the box central point of box put and are equipped with temperature signal and transmit temperature signal for temperature control module and information module on four curb plates of box and at least one in the bottom plate, be located position between outer heat preservation and the interior heat preservation is equipped with electrical heating membrane or graphite alkene layer be equipped with on the curb plate of box with electrical heating membrane or graphite alkene layer connected power, be used for temperature control module and the information module that is used for storing information.

Wherein the temperature control module: the temperature sensor is used for receiving the temperature information collected by the first temperature sensor, the second temperature sensor and the third temperature sensor, comparing the temperature information with a threshold value, and controlling the switch of the power supply so as to start and close the electric heating film or the graphene layer and heat or stop heating; the information module: and the temperature sensor is used for receiving and recording the information collected by the first temperature sensor, the second temperature sensor and the third temperature sensor.

Preferably, a space is respectively arranged at the central positions of the four side plates of the box body, which are close to the outer wall, and the space is used for accommodating the power supply temperature control module and the information module.

Preferably, metal frames are arranged at the intersection of the side plates of the box body, the intersection of the side plates and the bottom plate and the upper edges of the side plates; the space is formed by a metal separator.

Preferably, the cold storage plate comprises a plurality of rows of cold storage slats for containing phase change materials, each row of cold storage slats comprises a plurality of cold storage units which are longitudinally connected, each cold storage unit comprises two flat hexagonal independent spaces I and II, and the independent spaces I and II are respectively used for containing different phase change materials I and phase change materials II; so that the phase change material I and the phase change material II are distributed on the whole cold storage plate at intervals in the transverse direction and the longitudinal direction.

Preferably, the first and second independent spaces are respectively in the shape of flat hexagon, the opposite sides of the independent spaces are parallel and equal, and the length of the upper side and the lower side is twice of the length of the rest four sides.

Preferably, the concave corner part at one or two outer sides of the first and second independent spaces of the cold accumulation unit is provided with a diamond-shaped connecting plate extending outwards; the adjacent cold accumulation laths are connected into the cold accumulation plate through the connecting plate.

Preferably, the cold accumulation plate is provided with a bracket which is matched with the side plate of the box body and is in a frame structure, the bracket is provided with longitudinal intervals so as to be divided into a plurality of longitudinal slots, and the cold accumulation lath is inserted into the slots.

The first phase change material is as follows: adding graphite and aluminum oxide into dodecanol-caprylic acid with the mass ratio of 40:60 to change heat conduction, wherein the phase transition temperature is 2 ℃, and the phase transition potential is 224.5J/g; the second phase-change material is: the phase transition temperature of the n-caprylic acid-lauric acid or tetrabutylammonium bromide aqueous solution or n-tetradecane paraffin is 5 ℃, 5-6 ℃ or 4.9 ℃, and the phase transition potential is 140J/g, 188J/g or 216.3J/g.

As another scheme, the first phase-change material is: adding graphite and heat conducting metal as nucleating agents into dodecanol-decanoic acid with the mass ratio of 60:40, wherein the phase change temperature is 2 ℃, and the phase change latent heat is 224.5J/g; the second phase-change material is: adding graphite and heat conducting metal as nucleating agents into water, and adding cane sugar, salt and aluminum oxide to change the phase change temperature of the water, wherein the phase change temperature of the water is 0 ℃ and the latent heat of phase change is 330J/g.

Preferably, the outer insulating layer is made of a high-foaming polyethylene insulating material or a PU (polyurethane) foaming material, and the inner insulating layer is made of an LLDPE (linear low density polyethylene) material.

The invention also provides a temperature control method of the high-cold anti-freezing heat preservation box, which is characterized by comprising the following steps of:

s1, starting the equipment;

s2, inputting an external environment temperature threshold T_{1 threshold value}Temperature threshold T at the center of the tank_{2 threshold value}Heating temperature threshold T of electrically heated film or graphene_{3 threshold value}；

S3, the first sensor detects the external environment temperature T_{1 practice of}And transmits the data to the temperature control module and the information module in real time; temperature control module and threshold value T_{1 threshold value}Making a comparison when the temperature T is_{1 practice of}≤T_{1 threshold value}Then, the process proceeds to step S4; when the temperature T is_{1 practice of}＞T_{1 threshold value}Then, the process proceeds to step S6;

s4, detecting the temperature T in the box body by the second sensor_{2 practice of}And transmits the data to the temperature control module and the information module in real time; temperature control module and threshold value T_{2 threshold value}Making a comparison when the temperature T is_{2 practice of}≤T_{2 threshold value}Then, the process proceeds to step S5; when T is_{2 practice of}＞T_{2 threshold value}Then, the process proceeds to S3;

s5, the temperature control module sends out an instruction, and a power supply of the electric heating film or the graphene is switched on for heating;

s6, detecting the temperature T of the electric heating film or the graphene by the sensor III_{3 practice of}And transmits to the temperature control module and the information module, the temperature control module and the threshold value T_{3 threshold value}By comparison, when the temperature T is_{3 practice of}Is equal to or greater than T_{3 threshold value}When the temperature control module sends out an instruction, heating is stopped, and the step returns to S3; when the temperature T is_{3 practice of}Less than T_{3 threshold value}Then, the process proceeds to S5.

According to the high-cold anti-freezing heat preservation box, due to the adoption of the technical scheme, the low-temperature electric heating film or the graphene layer is arranged between the outer heat preservation layer and the inner heat preservation layer, the temperature of the external environment and the temperature of the central position in the box body are monitored in real time through the temperature control module, when the temperature of the external environment and the temperature in the box body are lower than the set threshold value, the electric heating film or the graphene layer is started to heat, and heating is stopped when the temperature of the external environment and the temperature in the box body are lower than the set threshold value, so that the situation that the temperature in the box body is lower than the lower limit of refrigeration of vaccines or medicines to cause the failure of the vaccines. Therefore, the high-cold anti-freezing heat insulation box can well control the internal environment of the heat insulation box to be in an ideal temperature range under the condition of external high-cold low-temperature environment. Thereby solving the problems of heat preservation, freezing prevention and cold resistance of the heat preservation box in the severe cold area under the external environment condition. The biological medicine packaging box has the advantages of energy conservation, safety and convenience in use, can not generate supercooling or overheating phenomenon, and can ensure that the biological medicine does not lose efficacy under the condition of severe cold of-10 ℃ to-30 ℃ in winter during transportation.

Therefore, the invention also provides a temperature control method of the high-cold anti-freezing heat preservation box, which comprises the steps of firstly detecting the temperature of the external environment, continuously detecting the temperature inside the box body when the temperature of the external environment is lower than a rated threshold value, starting heating when the temperature inside the box body is also lower than the rated threshold value, and controlling the starting heating mode by adopting two conditions. When the external environment temperature does not reach the rated temperature threshold, the temperature of the graphene layer or the electrical heating film needs to be further detected, and if the temperature is lower than the rated value, heating is carried out to ensure that the electrical heating film or the graphene layer has stable temperature.

The invention further designs the cold accumulation plate into a cellular structure of the cold accumulation units, each cold accumulation unit is provided with two flat hexagonal spaces which are respectively used for accommodating two different phase change materials, so that the two different phase change materials can be macroscopically and uniformly mixed, and particularly, the first phase change material which is preferably selected by the invention is: the dodecanol-octanoic acid with the mass ratio of 40:60 has the phase change temperature of 2 ℃ and the phase change latent heat of 224.5J/g. The phase-change material II is an n-caprylic acid-lauric acid nano composite phase-change material, the phase-change temperature is 5 ℃, the phase-change latent heat is 140J/g, or the phase-change material II is tetrabutylammonium bromide aqueous solution, the phase-change temperature is 5-6 ℃, and the phase-change potential is 188J/g; or n-tetradecane paraffin with the phase transition temperature of about 4.9 ℃ and the phase transition potential of 216.3J/g. The material with low phase change temperature and high phase change latent heat and the material with high phase change temperature and low phase change latent heat can be combined together, the phase change temperatures can be mixed within a range of 2-8 ℃, and the phase change latent heat of the mixed material can not be too small so that the quality of the box body is too large. Meanwhile, honeycomb cellular packaging is adopted, and different phase change materials are respectively arranged in two flat hexagonal spaces of each cold accumulation unit, so that the cold accumulation units of two different phase change materials are uniformly distributed, and the purpose of uniformly mixing the temperatures is achieved on the whole. Therefore, the cold accumulation plate is designed into a structure of the cold accumulation unit, and has the advantages of reasonable structure and ingenious conception.

The invention combines the phase-change energy storage technology with the graphene or low-temperature electrothermal film technology, is applied to the anti-freezing transportation of biological medicines, and is a technical device initiated by biological medicine logistics. The method changes the prior high-cold anti-freezing storage and transportation logistics mode, and enables innovative products of the current logistics anti-freezing technology to develop towards the directions of safety, high efficiency, energy conservation and environmental protection.

The invention can also deal with the emergency and can work independently under the condition of no power supply and no external network.

Drawings

FIG. 1 is a schematic view of the whole structure of the front of an alpine anti-freezing incubator provided by the invention;

FIG. 2 is a schematic view of the overall structure behind the alpine anti-freezing incubator provided by the invention;

FIG. 3 is a schematic view of a metal frame of an alpine anti-freezing incubator according to the present invention;

FIG. 4 is a sectional view of a horizontal section of an alpine anti-freezing insulation can provided by the present invention;

FIG. 5 is a longitudinal cross-sectional view A-A of FIG. 4;

FIG. 6 is a schematic structural view of a cold storage plate of the high-cold anti-freezing thermal insulation box provided by the invention;

FIG. 7 is a cross-sectional view B-B of FIG. 6;

fig. 8a is a schematic view of two cold accumulation units of the cold accumulation plate of the alpine anti-freezing insulation can provided by the invention being assembled together in the transverse direction;

FIG. 8b is a top view of FIG. 8 a;

FIG. 9a is the front view of the cold accumulation unit of the cold accumulation plate of the alpine anti-freezing insulation can provided by the invention;

FIG. 9b is a cross-sectional view C-C of FIG. 9 a;

FIG. 10a is a front view of the cold accumulation unit of the cold accumulation plate of the high and cold anti-freezing insulation can according to the present invention;

FIG. 10b is a cross-sectional view D-D of FIG. 10 a;

FIG. 11 is a flow chart of the temperature control method of the alpine anti-freezing heat preservation box of the invention.

Description of reference numerals: the box body 1, the side plates 11, the bottom plate 12, the metal frame 13, the upright posts 131, the vertical partition plates 132 and the horizontal partition plates 133; a case cover 2; an insulating layer 100, an outer insulating layer 101 and an inner insulating layer 102; the cold accumulation plate 200, the cold accumulation lath 201, the cold accumulation unit 202, the first independent space 2021, the second independent space 2022, the first connecting plate 2023, the second connecting plate 2024, the snap fastener 2025 and the bracket 203; a graphene layer 300, a power supply 400, an information module 500; a temperature control module 600; a phase change material A; and a second phase change material B.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be made with reference to the accompanying drawings, but the scope of the present invention should not be limited by the preferred embodiments.

In a first embodiment, as shown in fig. 1, 2, 4, and 5, the present invention provides an alpine antifreeze incubator, including: the refrigerator comprises a refrigerator body 1 and a refrigerator cover 2, wherein each side plate 11 of the refrigerator body 1, namely a left side plate, a right side plate, a front side plate, a rear side plate and a bottom plate 12 are respectively composed of a heat insulation layer 100 arranged on the outermost layer and a cold storage plate 200 arranged in the heat insulation layer 100 and positioned on the inner wall of the refrigerator body; the method is characterized in that: graphene layers 300 are respectively arranged on the four side plates 11 and the bottom plate 12 of the box body 1 and between the outer insulating layer 101 and the inner insulating layer 102, the graphene layers 300 can also be replaced by electric heating films, the graphene layers 300 are all arranged on the four side plates 11 and the bottom plate 12 of the box body, and can also be selectively arranged or uniformly arranged in the four side plates 11; a power supply 400 connected with the graphene layer 300 or the electric heating film, an information module 500 for storage and a temperature control module 600 for controlling temperature are arranged on the side plate 11 of the box body 1; a first temperature sensor, a second temperature sensor and a third temperature sensor are arranged outside the box body side plate 11, in the center of the box body 1, and at the graphene layer 300 or the electric heating film, and transmit the detected temperature to the temperature control module 600 and the information module 500.

In order to improve the space utilization rate of the box body 1, preferably, four side plates of the box body 1 are respectively provided with a space near the center of the outer wall, the space is used for arranging the power supply 400, the four spaces are provided with four power supplies 400, two of the power supplies 400 respectively supply power to the graphene layer 300 or the electric heating film and the temperature control module 600 and the information module 500, and the other two power supplies 400 are standby; a temperature control module 600 and an information module 500 are respectively arranged in two opposite spaces;

as shown in fig. 4 and 5, in order to improve the anti-freezing effect, the high-cold anti-freezing thermal insulation box 100 of the present invention includes: an inner insulation layer 102 and an outer insulation layer 101, wherein the outer insulation layer 101 is made of a high foaming polyethylene insulation material or a PU polyurethane foaming material, and the inner insulation layer 102 is made of an LLDPE (linear low density polyethylene) material.

In order to improve the strength of the box body 1, preferably, a metal frame 13 is arranged at the intersection of the side plates 11 of the box body 1 and the intersection of the side plates 11 and the bottom plate 12, as shown in fig. 3, the metal frame 13 can well improve the strength and the rigidity of the box body 1, and comprises upright posts 131 arranged on each edge of a cuboid, the cross sections of the upright posts 131 are in a 90-degree right-angle plate shape, so that protection can be formed at the corners of the box body, a partition plate for forming a space for arranging the power supply 400, the control module 600 and the information module 500 is further arranged on each side surface, specifically, the position for arranging the power supply 400 is provided with two vertical partition plates 132, and the positions for arranging the information module 500 and the temperature control module 600; the vertical and horizontal partitions 132 and 133 can well protect the information module 500, the power supply 400 and the temperature control module 600.

Referring to fig. 6, 7, 8a, 8b, 9a, 9b, 10a, and 10b, in order to achieve the effect that the phase change material of the cold storage plate has better thermal potential and low supercooling phenomenon, the cold storage plate 200 has the following structure: the cold accumulation device comprises 4 rows of cold accumulation slats 201 for containing phase change materials, each row of cold accumulation slats 201 comprises 2 independent cold accumulation units 202 which are longitudinally connected, each cold accumulation unit 202 comprises two flat hexagonal independent spaces I, II 2021 and 2022, the opposite sides of the hexagons of the independent spaces I, II 2021 and 2022 are parallel and equal, the upper side and the lower side are parallel, the side length of the independent spaces is 2 times of the other four sides, the independent spaces in the shape of the flat hexagonal sides can prevent the phase change materials from being accumulated, and the independent spaces I, II 2021 and 2022 are respectively used for containing different phase change materials; the concave corner parts at one or two outer sides of the two independent spaces I, II 2021, 2022 of the cold accumulation unit are provided with a diamond-shaped connecting plate I, II 2023, 2024 which extends outwards, and the connecting plate I2023 and the connecting plate II 2024 are provided with convex-concave type snap fasteners 2025 which are mutually buckled; the adjacent cold accumulation laths 201 are connected into the cold accumulation plate 200 through the snap fasteners 2025 of the connecting plate; the independent spaces of the first row of cold accumulation slats 201 are from top to bottom: the first independent space 2021, the second independent space 2022, the first independent space 2021 and the second independent space 2022; the independent space of the second row of cold accumulation slats 201 is from top to bottom: an independent space two 2022, an independent space one 2021, an independent space two 2022, an independent space one 2021; the third column and the fourth column are arranged at intervals, meanwhile, a phase change material A is arranged in the independent space I2021, and a phase change material B is arranged in the independent space II 2022; so that the first phase change material a and the second phase change material B are distributed on the whole cold storage plate 200 at intervals in the transverse direction and the longitudinal direction.

By adopting the structure, two different phase-change materials can be placed in the first independent space, the second independent space 2021 and the second independent space 2022 at intervals, so that the composite phase-change material which is relatively uniformly mixed is formed, the cold storage requirements of different working conditions can be met, and the problem that the two phase-change materials are easily layered after being mixed is solved. In particular, the first, second independent spaces 2021, 2022 are in the shape of flat hexagonal walls, and the phase change material therein is less likely to form accumulation and bottom phenomena.

In a preferred embodiment, the cool storage plate 200 includes a bracket 203, the bracket 203 is matched with the side plate of the case body and has a frame structure, and the upper end of the bracket 203 is open-shaped, and the cool storage plate is inserted into the bracket 203.

As another embodiment, the bracket 203 has a plurality of partitions longitudinally disposed thereon, so as to form a plurality of slots longitudinally used for accommodating the cold storage slats 201, and each cold storage slat 201 is directly inserted into the strip-shaped slot formed by the partitions of the housing 203, without connecting the cold storage slats 201 by a connecting plate.

Aiming at the alpine anti-freezing heat preservation box, two phase change materials are selected and used for being respectively filled in the first independent space, the second independent space 2021 and the independent space 2022, wherein the first phase change material A is as follows: the mass ratio is 40:60 of dodecanol-caprylic acid solution, graphite, heat conducting metal and the like are added to help nucleation; the phase change temperature is 2 ℃, and the phase change latent heat is as follows: 224.5J/g;

the phase change material II B is tetrabutyl ammonium bromide aqueous solution, and graphite and aluminum oxide are added to change heat conduction; the phase transition temperature is: 5-6 ℃, and the phase change latent heat is as follows: 188J/g. Phase change material two B can be: n-caprylic acid-lauric acid or n-tetradecane paraffin is used for replacement, when n-caprylic acid-lauric acid is selected, the phase change temperature is 5 ℃, and the phase change latent heat is as follows: 140J/g; when n-tetradecane paraffin is selected, the phase change temperature is 4.9 ℃, and the phase change latent heat is as follows: 216.3J/g.

Two phase-change materials A, B are respectively filled in the first, second 2021, 2022 independent spaces to achieve the purpose of macroscopically mixing, so that the phase-change temperature of the cold storage plate is adjusted to be: 3-4 ℃, and the phase change latent heat is as follows: 210J/g. If the phase transition temperature is required to be increased, the content of the octanoic acid in the dodecanol-octanoic acid solution can also be reduced.

The phase-change material is adopted, and two phase-change materials A, B are filled in the independent spaces I, II 2021 and 2022 at intervals, so that the phase-change material has the following advantages: the material with low phase-change temperature and high phase-change latent heat and the material with high phase-change temperature and low phase-change latent heat can be combined together, so that the phase-change temperature can be mixed within a range of 2-8 ℃, and the latent heat of phase change of the mixed material can not be too small to cause the weight of the box body to be too large.

Because the cold storage plate 200 is longitudinally connected into a whole by a plurality of cold storage units 202 and is transversely connected together, each cold storage unit 202 comprises a first independent space 2021, a second independent space 2022 for accommodating two different phase change materials A, B, the first independent space 2021 is filled with cold storage liquid A, the second independent space 2022 is filled with different phase change materials of cold storage liquid B, and the first independent space and the second independent space filled with the different phase change materials of A and B are uniformly distributed, so that the purpose of temperature mixing is achieved on the whole. And the cold accumulation liquid is uniformly distributed, so that the temperature field in the box is uniform, the phenomenon of supercooling and overheating is avoided, and meanwhile, the problem that the two phase-change materials are mixed together to easily generate the layering phenomenon is avoided.

Wherein the temperature control module 600 for controlling the temperature: the temperature sensor is used for receiving temperature signals transmitted by the first temperature sensor, the second temperature sensor and the third temperature sensor and comparing the temperature signals with a threshold value, wherein the threshold value of the environment temperature is as follows: when the temperature of the external environment is lower than or equal to the threshold value, the temperature control module 600 sends a signal to turn on the graphene layer 300 to heat the graphene layer, so as to avoid the supercooling failure of vaccine drugs and the like due to too low temperature. After heating, the temperature sensor starts to detect, and transmits the temperature of the graphene layer 300 (or the electrical heating film) to the temperature control module 600 in real time, and when the temperature of the graphene layer 300 (or the electrical heating film) rises to 8 ℃, the temperature control module 600 sends a signal, disconnects the power supply of the graphene layer 300 (or the electrical heating film), and stops heating. The temperature sensor II at the center of the box body detects the temperature in real time, the lower limit of the temperature is 3 ℃, when the temperature is lower than 3 ℃, the graphene layer 300 (or the electric heating film) is started to heat, when the temperature of the graphene layer 300 (or the electric heating film) is increased to 8 ℃, the temperature control module 600 sends a signal, the power supply of the graphene layer 300 (or the electric heating film) is disconnected, and heating is stopped.

Therefore, the invention also comprises a temperature control method of the high-cold anti-freezing heat preservation box, which comprises the following steps:

which comprises the following steps:

s1, starting the device

S2, inputting to outsideAmbient temperature threshold T_{1 threshold value}Temperature threshold T at the center of the tank_{2 threshold value}Heating temperature threshold T of electrically heated film or graphene_{3 threshold value}；

S3, the first sensor detects the external environment temperature T_{1 practice of}And transmits to the temperature control module 600 and the information module 500 in real time; temperature control module 600 and threshold T_{1 threshold value}Making a comparison when the temperature T is_{1 practice of}≤T_{1 threshold value}Then, the process proceeds to step S4; when the temperature T is_{1 practice of}＞T_{1 threshold value}Then, the process proceeds to step S6;

s4, detecting the temperature T in the box body by the second sensor_{2 practice of}And transmits to the temperature control module 600 and the information module 500 in real time; temperature control module 600 and threshold T_{2 threshold value}Making a comparison when the temperature T is_{2 practice of}≤T_{2 threshold value}Then, the process proceeds to step S5; when T is_{2 practice of}＞T_{2 threshold value}Then, the process proceeds to S3;

s5, the temperature control module 600 sends out an instruction to switch on the power supply of the electric heating film or the graphene 300 to heat;

s6, detecting the temperature T of the electric heating film or the graphene by the sensor III_{2 practice of}And transmits to the temperature control module 600 and the information module 500, the temperature control module 600 and the threshold T_{3 threshold value}By comparison, when the temperature T is_{2 practice of}Is equal to or greater than T_{3 threshold value}When the temperature control module 600 sends out an instruction, heating is stopped, and the process returns to S3; when the temperature T is_{2 practice of}Less than T_{3 threshold value}Then, the process proceeds to S5.

In the second embodiment, the drug is delivered to the harbin area in winter by the temperature control method:

determining T according to the storage condition of the medicine at 2-18 DEG C_{2 threshold value}Comprises the following steps: below this temperature, the heating film was started.

S1: starting the equipment;

s2, inputting an external environment temperature threshold T_{1 threshold value}Temperature threshold T at the center of the tank_{2 threshold value}Heating temperature threshold T of electrically heated film or graphene_{3 threshold value}Respectively is as follows: -10 ℃, 3 ℃, 8 ℃;

s3, detecting the outer ring by the sensor IAmbient temperature T_{1 practice of}And transmits to the temperature control module 600 and the information module 500 in real time; temperature control module 600 and threshold T_{1 threshold value}: comparison is carried out at-10 ℃ when the temperature T_{1 practice of}When the temperature of the external environment is lower than or equal to minus 10 ℃, namely when the temperature of the external environment is lower than the threshold value, further judging whether the temperature in the box body is lower than the threshold value, and then entering the step S4; when the temperature T is_{1 practice of}When > -10 ℃, the process proceeds to step S6, and the temperature of the graphene layer 300 is further detected, and the temperature of the graphene layer 300 is monitored when the external temperature threshold is not reached but the temperature of the graphene layer 300 is reduced due to a long low temperature time;

s4, detecting the temperature T in the box body by the second sensor_{2 practice of}And transmits to the temperature control module 600 and the information module 500 in real time; temperature control module 600 and threshold T_{2 threshold value}: comparison is carried out at 3 ℃ when the temperature T_{2 practice of}When the temperature is less than or equal to 3 ℃, entering step S5 for heating; when T is_{2 practice of}When the temperature is higher than 3 ℃, entering S3, and continuously detecting the temperature of the external environment;

s5, the temperature control module 600 sends out an instruction to switch on the power supply of the electric heating film or the graphene 300 to heat;

s6, detecting the temperature T of the electric heating film or the graphene 300 by the sensor III_{2 practice of}And transmits to the temperature control module 600 and the information module 500, the temperature control module 600 and the threshold T_{3 threshold value}: comparison at 8 ℃ when the temperature T_{2 practice of}When the temperature is equal to or higher than 8 ℃, the temperature control module 600 sends an instruction to stop heating, returns to S3, and continues to detect the temperature in the box body; when the temperature T is_{2 practice of}And when the temperature is lower than 8 ℃, entering S5 for heating.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations, or equivalents may be made, such as changes in phase change materials, changes in temperature thresholds, etc., without departing from the spirit and scope of the invention as defined in the appended claims; but would fall within the scope of the invention.

Claims (10)

1. An alpine anti-freezing insulation can, comprising: box and case lid, curb plate and bottom plate and the case lid of box constitute its characterized in that by outer heat preservation and interior heat preservation and establish the intraformational cold storage board of interior heat preservation: the utility model discloses a temperature control device for solar water heater, including box, bottom plate, temperature control module, temperature sensor one, two, three are equipped with respectively to outside, electrical heating membrane or graphite alkene layer and the box central point of box put and are equipped with temperature signal and transmit temperature signal for temperature control module and information module on four curb plates of box and at least one in the bottom plate, be located position between outer heat preservation and the interior heat preservation is equipped with electrical heating membrane or graphite alkene layer be equipped with on the curb plate of box with electrical heating membrane or graphite alkene layer connected power, be used for temperature control module and the information module that is used for storing information.

2. The alpine antifreeze incubator according to claim 1, characterized in that: the central positions of the four side plates of the box body, which are close to the outer wall, are respectively provided with a space, and the spaces are used for accommodating the power supply, the temperature control module and the information module.

3. The alpine antifreeze incubator according to claim 2, characterized in that: metal frames are arranged at the intersection of the side plates of the box body, the intersection of the side plates and the bottom plate and the upper edges of the side plates; the space is formed by a metal separator.

4. The alpine antifreeze incubator according to any one of claims 1 to 3, wherein: the cold accumulation plate comprises a plurality of rows of cold accumulation laths for containing phase change materials, each row of cold accumulation lath comprises a plurality of cold accumulation units which are longitudinally connected, each cold accumulation unit comprises two flat hexagonal independent spaces I and II, and the independent spaces I and II are respectively used for containing different phase change materials I and phase change materials II; so that the phase change material I and the phase change material II are distributed on the whole cold storage plate at intervals in the transverse direction and the longitudinal direction.

5. The alpine antifreeze incubator according to claim 4, wherein: the first and second independent spaces are in the shape of flat hexagon respectively, the opposite sides of the independent spaces are parallel and equal, and the lengths of the upper side and the lower side are twice of the lengths of the rest four sides.

6. The alpine antifreeze incubator according to claim 4 or 5, wherein: one or two concave corner parts of the outer sides of the first and second independent spaces of the cold accumulation unit are provided with a diamond-shaped connecting plate extending outwards; the adjacent cold accumulation laths are connected into the cold accumulation plate through the connecting plate.

7. The alpine antifreeze incubator according to claim 4 or 5, wherein: the cold accumulation plate is provided with a support which is matched with the side plate of the box body and is of a frame structure, the support is provided with longitudinal intervals so as to be divided into a plurality of longitudinal slots, and the cold accumulation lath is inserted into the slots.

8. The alpine antifreeze incubator according to any one of claims 4 to 7, wherein: the first phase change material is as follows: the dodecanol-octanoic acid with the mass ratio of 40:60 has the phase transition temperature of 2 ℃ and the phase transition potential of 224.5J/g; the second phase-change material is: the phase transition temperature of the n-caprylic acid-lauric acid or tetrabutylammonium bromide aqueous solution or n-tetradecane paraffin is 5 ℃, 5-6 ℃ or 4.9 ℃, and the phase transition potential is 140J/g, 188J/g or 216.3J/g.

9. The alpine antifreeze incubator according to any one of claims 1 to 3, wherein: the heat-insulating layer comprises an outer heat-insulating layer and an inner heat-insulating layer, the outer heat-insulating layer is made of a high-foaming polyethylene heat-insulating material or a PU (polyurethane) foaming material, and the inner heat-insulating layer is made of an LLDPE (Linear Low Density polyethylene) material.

10. The temperature control method of the alpine anti-freezing incubator according to claims 1 to 9, characterized in that it comprises the steps of:

s1, starting the equipment;

s2, inputting an external environment temperature threshold T_{1 threshold value}Temperature threshold T at the center of the tank_{2 threshold value}Heating temperature threshold T of electrically heated film or graphene_{3 threshold value}；

S3, the first sensor detects the external environment temperature T_{1 practice of}And transmits the data to the temperature control module and the information module in real time; temperature control module and threshold value T_{1 threshold value}Making a comparison when the temperature T is_{1 practice of}≤T_{1 threshold value}Then, the process proceeds to step S4; when the temperature T is_{1 practice of}＞T_{1 threshold value}Then, the process proceeds to step S6;

s4, detecting the temperature T in the box body by the second sensor_{2 practice of}And transmits the data to the temperature control module and the information module in real time; temperature control module and threshold value T_{2 threshold value}Making a comparison when the temperature T is_{2 practice of}≤T_{2 threshold value}Then, the process proceeds to step S5; when T is_{2 practice of}＞T_{2 threshold value}Then, the process proceeds to S3;

s5, the temperature control module sends out an instruction, and a power supply of the electric heating film or the graphene is switched on for heating;

s6, detecting the temperature T of the electric heating film or the graphene by the sensor III_{3 practice of}And transmits to the temperature control module and the information module, the temperature control module and the threshold value T_{3 threshold value}By comparison, when the temperature T is_{3 practice of}Is equal to or greater than T_{3 threshold value}When the temperature control module sends out an instruction, heating is stopped, and the step returns to S3; when the temperature T is_{3 practice of}Less than T_{3 threshold value}Then, the process proceeds to S5.

Images