A smart cold storage

Abstract

The present invention discloses an intelligent cold storage, including an energy generation system, a cold storage system, a wind power adjustment system and a cold storage, wherein the energy generation system is respectively connected to a wind power generation device and a photovoltaic power generation device and a storage battery on a controller, the windmill of the wind power generation device is arranged on the top of the cold storage to obtain wind energy, and the photovoltaic components of the photovoltaic power generation device are arranged on the east-west direction of the outer wall of the cold storage to obtain solar energy; the cold storage system includes a cold storage plate arranged on the inner wall and inside of the cold storage, and a cold medium salt solution is arranged in the cold storage plate; the wind power adjustment system includes a DC fan arranged at the top of the cold storage, and the DC fan is connected to the controller to obtain power; the cold storage has a plurality of freezing chambers, and a freezing unit separated by a heat-insulating partition in each freezing chamber. The present invention provides an intelligent cold storage that makes full use of renewable energy and natural conditions, can generate electricity for use independently, improves the uniformity of internal airflow organization and the quality of stored food, and optimizes the internal structure.

Description

Technical Field

[0001] The present invention relates to the technical field of freezing and refrigeration equipment engineering, in particular to an optimized design of a cold storage structure, and specifically to an intelligent cold storage. Background Art

[0002] With the rapid development of my country's economy, people's living standards are improving day by day, which brings about the increasing demand for refrigerated and frozen foods, and urgently needs to expand the cold chain industry such as cold storage. The energy consumption of cold storage generally accounts for more than 70% of the energy consumption of the entire cold chain logistics enterprise, and the energy cost accounts for more than 30% of the enterprise's operating costs. Among them, the air cooler is the main energy-consuming equipment in the cold storage. Therefore, the energy consumption problem of the cold storage fan has attracted more and more attention from the refrigeration and food industries.

[0003] The current cold storage energy supply solutions mainly rely on a relatively single energy supply and storage method, or use AC power for power supply. They are not suitable for use in remote mountainous areas or prairie areas where it is inconvenient to access AC power, which greatly limits the scope of use of the product.

[0004] Patent CN204398960U discloses a wind and solar cold chain logistics vehicle, which utilizes wind and solar energy through the air collecting vents on the front of the vehicle and the solar panels on the top of the vehicle to obtain the energy source for cold supply during food transportation. However, this energy supply method is relatively simple, and only uses batteries to store electricity, which cannot guarantee the reliability of cold supply for the cold chain vehicle. On the other hand, when the solar panels are placed horizontally, the utilization efficiency of solar energy is relatively low. Summary of the invention

[0005] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides an intelligent cold storage which fully utilizes renewable energy and natural conditions, can generate electricity independently for use, improves the uniformity of internal airflow organization and the quality of stored food, and optimizes the internal structure.

[0006] The technical solution adopted by the present invention is: an intelligent cold storage, including an energy generation system, a cold storage system, a wind power adjustment system and a cold storage, wherein:

[0007] The energy generation system includes a wind power generation device, a photovoltaic power generation device, and a storage battery connected to the controller. The wind turbine of the wind power generation device is arranged on the top of the cold storage to obtain wind energy, and the photovoltaic modules of the photovoltaic power generation device are arranged on the east-west direction of the outer wall of the cold storage to obtain solar energy.

[0008] The cold storage system comprises a cold storage plate arranged on the inner wall and inside of the cold storage, wherein a cold medium salt solution is arranged in the cold storage plate;

[0009] The wind force adjustment system includes a DC fan located at the top of the cold storage, and the DC fan is connected to the controller through a DC compressor to obtain power;

[0010] The cold storage has several freezing chambers and a freezing unit separated by heat-insulating partitions in each freezing chamber.

[0011] Preferably, the cold storage is divided into two freezing chambers in the east-west direction. The temperature of the east freezing chamber is -12℃~-14℃, and the temperature of the west freezing chamber is -18℃~-20℃. The east freezing chamber and the west freezing chamber are used to freeze mutton and beef respectively to prevent the quality of frozen products from deteriorating.

[0012] Preferably, each freezing chamber is divided into four symmetrical freezing units by heat-insulating partitions for stacking frozen goods, that is, the goods are frozen in four groups to achieve a better freezing effect with a more uniform internal airflow organization.

[0013] Preferably, the south and north side wall structures of the cold storage are provided with downward curved arc-shaped guide plates, and pad plates are placed on the floor of the cold storage. The downward curved arc-shaped guide plates reduce energy loss during gas circulation, and the pad plates on the floor of the cold storage reduce the return air flow vortex and balance the airflow inside the cold storage.

[0014] Preferably, the cold storage plates are respectively arranged on the inner side of the east wall, the inner side of the west wall, both sides of the insulation partition, and the angle between the south and north inner walls and the ceiling of the cold storage, so as to ensure that the cold storage plates can provide all-round cold supply and cold storage.

[0015] Preferably, the cold medium salt solution is provided in the cold storage plate. When the power supply equipment supplies power to the cold storage, part of the cold generated by the refrigeration unit is absorbed by the cold storage medium, and phase change occurs to store cold; when there is no power supply, the cold storage medium absorbs the heat generated in the cold storage to maintain the low temperature environment of the cold storage.

[0016] Preferably, a DC fan is installed in each freezing chamber of the cold storage, each DC fan is installed at the top center position, and cold storage plates are installed around the inner side of each freezing chamber. In this way, the temperature in the center of the cold storage can be kept relatively low. The DC fan absorbs the rising hot air through the downward-facing fan and discharges it through the air vents installed on both sides, thereby achieving uniform distribution of the temperature in the freezing space.

[0017] Preferably, the photovoltaic components are arranged on the south outer side of the cold storage, and the photovoltaic components are arranged in an upper and lower two-layer structure.

[0018] Preferably, the tilt angle of the photovoltaic module is set to 40°~50°, and the photovoltaic modules placed in the lower layer are allowed to be partially blocked by the upper photovoltaic modules around the summer solstice. Since the energy consumption of this system is the highest in summer and solar energy is the most abundant at this time, the tilt angle of the solar panel is set with summer as a reference. The solar altitude angle takes the average value in summer. Taking Inner Mongolia as an example, the average value of the solar altitude angle is 45°, so the solar panel bracket angle can be set to 40°~50°.

[0019] Preferably, the windmill is placed between the horizontal positions of the two groups of photovoltaic modules at the top, because the windmill pillars are usually set at 2~3m. On the basis of the cold storage height of 2~2.5m, the windmill height can reach 4~5.5m. The wind force on this horizontal plane can reach 7m / s and above. Based on the situation that wind power generation can be started when the wind speed reaches 1.3m / s, the utilization of wind energy can be greatly increased under the condition of relatively reduced infrastructure investment. The controller is set in the space below the photovoltaic module to avoid direct sunlight through the shielding effect of the photovoltaic module. At the same time, certain anti-corrosion materials are set to form an anti-corrosion space to protect the equipment from damage. The controller judges the power generation power of the production capacity component and the cold storage load value, and sends the electricity generated by solar energy and wind energy to the cold storage for energy supply, or to the battery for storage, so as to realize the intelligent operation of the system.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) The present invention takes into account the unstable weather conditions and sets up energy storage systems that can meet various weather conditions. If it is a sunny day without wind, the working mode of solar energy, cold storage and electricity storage is used; if it is a cloudy day with wind, the working mode of wind energy, cold storage and electricity storage is used; if it is a sunny day with wind, the working mode of solar energy, wind energy, cold storage and electricity storage is used; if it is a cloudy day without wind, the working mode of cold storage tank and battery power supply is used. Since there may be a situation where there is no solar energy and wind energy for several consecutive days, a certain amount of surplus should be left for both the battery and the cold storage plate in case of emergency.

[0022] (2) The photovoltaic modules in the present invention are used to receive solar energy, and the angle setting directly affects the working efficiency of the photovoltaic modules. In order to select the most suitable angle, the present invention takes into account that the cold storage consumes the most energy in summer. At the same time, the photovoltaic modules are set on the south outer wall, and the solar altitude angle is the largest on the summer solstice. The steel bracket is fixed within the angle range that is most suitable for receiving solar energy around the summer solstice to improve energy utilization.

[0023] (3) The present invention collects wind energy through a windmill, which is installed on the top of the cold storage. The wind force here is stronger than on the ground, the environmental interference is smaller, and the floor space is saved, the length of the windmill support is reduced, and the construction cost is reduced.

[0024] (4) The present invention takes into account that the air temperature in the external environment of Inner Mongolia in winter is already as low as the freezing requirement and does not need to be cooled further. The air can be directly filtered and cleaned before being used to freeze food, thus saving energy and making full use of environmental conditions.

[0025] (5) The present invention takes into account that certain meats have higher freezing quality requirements and may need to be frozen for a long time across seasons. The cold storage is divided into two small freezing rooms with freezing temperatures of -12°C to -14°C and -18°C to -20°C, which are used to freeze mutton and beef respectively, so as to achieve different freezing effects and improve the quality of frozen products.

[0026] (6) The present invention takes into account the impact of cargo placement on internal airflow organization and the impact of different airflow organizations on food quality. The cargo stacking area is kept 0.5 meters away from the wall on both sides to avoid the high-temperature return air zone. The cargo is divided into four equal parts to achieve a more uniform airflow organization, which is beneficial to improving the freezing performance.

[0027] (7) The present invention sets a cold storage plate inside the cold storage, uses a salt solution whose solidification temperature is within the freezing temperature range as the cold storage medium, and utilizes its phase change cold storage property to store a large amount of excess cold, thereby reducing the use of the cold storage medium and saving the freezing space. When the production capacity is insufficient, the cold storage medium is released through the DC fan to maintain the low temperature of the freezing space and enable the cold storage to operate stably.

[0028] In summary, the intelligent cold storage of the present invention has a compact internal structure and saves land resources. At the same time, the energy generation system, cold storage system and wind power adjustment system of the intelligent cold storage can be disassembled, and the use location is no longer limited, which is convenient and fast, and the applicable scope of the product is improved, so that the intelligent cold storage has a relatively wide application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is the principle structure diagram of the present invention

[0030] Figure 2 The overall structure diagram of the present invention

[0031] Figure 3 The relative position relationship between the solar panel and the wind power generation equipment of the present invention

[0032] Figure 4 This is a top bottom view of the interior of the cold storage of the present invention.

[0033] Wherein: 100-energy generation system, 110-controller, 120-wind power generation device, 121-windmill, 130-photovoltaic power generation device, 131-photovoltaic module, 140-battery;

[0034] 200-cold storage system, 210-cold storage plate;

[0035] 300-wind adjustment system, 310-DC fan;

[0036] 400-cold storage, 410-freezer, 420-insulation partition, 430-freezing unit, 440-downward curved arc guide plate, 450-storage pad. DETAILED DESCRIPTION

[0037] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the combination or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, in the description of the embodiments of the present invention, the device positional relationships such as "up", "down", "front", "back", "left", "right" and the like in all the drawings are based on the positions or positional relationships shown in the accompanying drawings. Figure 1 As standard.

[0039] like Figure 1 As shown, an intelligent cold storage includes an energy generation system 100, a cold storage system 200, a wind power adjustment system 300 and a cold storage 400, wherein:

[0040] The energy generation system 100 includes a wind power generation device 120, a photovoltaic power generation device 130, and a storage battery 140 respectively connected to a controller 110. The windmill 121 of the wind power generation device 120 is arranged on the top of the cold storage 400 to obtain wind energy. The photovoltaic modules 131 of the photovoltaic power generation device 130 are arranged on the east-west direction of the outer wall of the cold storage 400 to obtain solar energy.

[0041] The cold storage system 200 includes a cold storage plate 210 disposed on the inner wall and inside of the cold storage 400, wherein a cold medium salt solution is disposed inside the cold storage plate 210;

[0042] The wind force adjustment system 300 includes a DC fan 310 disposed at the top of the cold storage, and the DC fan 310 is connected to the controller 110 through a DC compressor 320 to obtain power;

[0043] The cold storage 400 has a plurality of freezing chambers 410 and a freezing unit 430 separated by a heat-insulating partition 420 in each freezing chamber 410 .

[0044] Cold storage 400 is divided into two freezer rooms in the east-west direction. The temperature of the east freezer is -12℃~-14℃, and the temperature of the west freezer is -18℃~-20℃. The east freezer and the west freezer are used to freeze mutton and beef respectively to prevent the quality of frozen products from deteriorating.

[0045] A more preferred embodiment is that each freezing chamber 410 is divided into four symmetrical freezing units 430 by a heat-insulating partition 420 for stacking frozen goods, that is, the goods are frozen in four groups, and a better freezing effect is achieved by a more uniform internal airflow organization. The south and north side wall structures of the cold storage 400 are provided with downwardly curved arc-shaped guide plates 440, and a cushioning plate 450 is placed on the cold storage floor.

[0046] A more preferred embodiment is that the cold medium salt solution is provided in the cold storage plate 210. When the power supply equipment supplies power to the cold storage, part of the cold generated by the refrigeration unit is absorbed by the cold storage medium, and phase change occurs to store cold; when there is no power supply, the cold storage medium absorbs the heat generated in the cold storage to maintain the low temperature environment of the cold storage. A DC fan 310 is arranged in each freezing chamber 410 of the cold storage 400, and each DC fan 310 is arranged at the top center position, and a cold storage plate 210 is arranged around the inner side of each freezing chamber 410, so that the temperature in the center of the cold storage can be relatively low. The DC fan absorbs the rising hot air through the fan facing downward, and discharges it through the air outlets arranged on both sides, so as to achieve a uniform distribution of the temperature in the freezing space. The photovoltaic module 131 is arranged on the south side of the cold storage 400, and the photovoltaic module 131 is arranged as an upper and lower two-layer structure, which is convenient for obtaining more solar energy. The inclination angle of the photovoltaic module 131 is set to 40°~50°, and the photovoltaic module placed in the lower layer is allowed to be partially blocked by the upper photovoltaic module around the summer solstice. The windmill 121 of the intelligent cold storage is placed between the horizontal positions of the two groups of photovoltaic components 131 at the top, and the controller 110 is set in the space below the photovoltaic components 131.

[0047] Other embodiments

[0048] The intelligent cold storage is used for freezing beef and mutton. The photovoltaic module is equipped with 14 2m*1m (length*width) solar panels with an inclination angle of 40°~45°. The upper and lower layers of solar panels with an interval of 0.4m are arranged outside the side wall structure of the cold storage. 7 panels are placed vertically on the lower layer, 3 panels are placed horizontally on the upper layer, and 4 panels are placed on the top with an interval of 1m between each two panels. The power generation power of each solar panel is 300w. The sunshine time is 6 hours. The power generated by the photovoltaic module on a sunny day is Q=300w / 1000*6h*14=25.2kw·h.

[0049] Three 2m high windmills with a generating capacity of 400w are installed on the top of the cold storage, with a distance of 1m between each two windmills and a bottom foundation size of 1m*1m. The power generated by the wind power generation device in one day is Q=400w / 1000*6h*3 =7.2kw·h.

[0050] The generator, controller, battery, outdoor unit of the refrigerator are placed under the top solar panel and anti-corrosion protection device is installed. The controller supplies the electricity generated by the wind power generation device and the photovoltaic power generation device to the cold storage DC compressor. When the output power exceeds the load required by the cold storage, the controller adjusts the excess power to be stored in the battery.

[0051] The cold storage with the outer dimensions of 7m*3m*2.5m (length*width*height) is divided into two freezing rooms, one with the dimensions of 3.5m*3m*2.5m (length*width*height) and the freezing temperature of -18~-20℃ and the other with the dimensions of 3.5m*3m*2.5m (length*width*height) and the freezing temperature of -12~-14℃. Since the light in the afternoon is stronger than that in the morning, the sun is on the east side in the morning and on the west side in the afternoon, the freezing room on the east side is set to a lower temperature of -18~-20℃ for freezing beef, and the freezing room on the west side is set to a higher temperature of -12~-14℃ for freezing mutton. In addition, the partitions set on the inner side and middle of the east and west side walls of the side wall cold storage reduce the convection loss of cold air and help the circulation of cold air. Without considering the cold storage capacity, the daily power consumption of the mutton freezer is 7.6kw·h, the daily power consumption of the beef freezer is 7.9kw·h, and the total daily power consumption of the cold storage is 15.5kw·h.

[0052] Two pieces of 3.0m*1m*0.02m (length*width*height) The cold storage plate is set at the angle between the inner wall of the south and north side walls and the ceiling of the beef freezing room. The size of the two plates is 2.8m*2.3m*0.02m. Cold storage plates are set on the inner surface of the east and west walls of the beef freezing room. Since the solar panels are set outside the south wall, the heat transfer of the direct radiation of the sun to the side wall cold storage is weakened. At the same time, the north wall is the backlit surface, so only a few cold storage plates are set inside the south and north side walls of the cold storage. And because the density of cold air is large and it is easy to flow downward, the cold storage plates as mentioned above are set on the upper part, which is conducive to the uniform distribution of cold air. The east wall of the freezing room is directly exposed to the sun, so the entire side wall is equipped with cold storage plates, but the thickness is set to be thin.

[0053] Two pieces with dimensions of 3.0m*1m*0.02m (length*width*height) The cold storage plate is set at the angle between the north and south walls of the mutton freezing room and the ceiling. The size of the two plates is 2.8m*2.3m*0.02m. Cold storage plates are set on the inner surface of the east and west walls of the mutton freezing room. Since the solar panels are set outside the south wall, the heat transfer through the side wall in this direction due to solar radiation is weakened. At the same time, the north wall is the backlit surface, and less heat is transmitted. Therefore, only a few cold storage plates are set inside the north and south side walls of the cold storage. Since the density of cold air is large and it is easy to flow downward, the cold storage plates as mentioned above are set at the top, which is conducive to the downward movement of cold air. The west wall of the freezing room is directly exposed to the sun, so the entire side wall is equipped with cold storage plates, but the thickness is set to be thin.

[0054] The cold storage plate absorbs excess cold energy and stores cold energy when the cold storage compressor releases cold energy into the cold storage. When there is no wind or sun, the cold storage plate releases the stored cold energy to maintain the low temperature of the refrigerated space.

[0055] Two DC fans are located in the middle of the top of the mutton freezing room and the beef freezing room respectively. The DC fans with downward openings absorb the rising hot air with relatively high temperature in the center of the freezing room, and then blow it out through the air outlets on the north and south sides of the fans. The circulation of gas makes the temperature distribution of the freezing space more uniform, improving the quality of frozen products. When the DC fans are working, they are powered by wind and solar energy when there is wind and solar energy, and by batteries when there is no wind and solar energy. When there is no production and energy storage, they can switch to the mains.

[0056] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. An intelligent cold storage, characterized in that: It comprises an energy generation system (100), a cold storage system (200), a wind power adjustment system (300) and a cold storage (400), wherein: An energy generation system (100), a wind power generation device (120) and a photovoltaic power generation device (130) respectively connected to a controller (110), and a storage battery (140), wherein a windmill (121) of the wind power generation device (120) is arranged on the top of a cold storage (400) to obtain wind energy, and a photovoltaic module (131) of the photovoltaic power generation device (130) is arranged on the outer wall of the cold storage (400) in the east-west direction to obtain solar energy; A cold storage system (200) comprises a cold storage plate (210) arranged on the inner wall and inside of a cold storage (400), wherein a cold medium salt solution is arranged inside the cold storage plate (210); The wind force adjustment system (300) comprises a DC fan (310) disposed at the top of the cold storage, wherein the DC fan (310) is connected to a controller (110) via a DC compressor (320) to obtain power; A cold storage (400) having a plurality of freezing chambers (410) and a freezing unit (430) separated by a heat-insulating partition (420) in each freezing chamber (410); The cold storage (400) is divided into two freezing rooms in the east-west direction. The temperature of the east freezing room is -12℃~-14℃, and the temperature of the west freezing room is -18℃~-20℃; Each freezing chamber (410) is divided into four symmetrical freezing units (430) by a heat-insulating partition (420); the south and north side wall structures of the cold storage (400) are provided with downwardly curved arc-shaped flow guide plates (440), and a cushioning plate (450) is placed on the floor of the cold storage; The photovoltaic assembly (131) is arranged on the south side of the cold storage (400), and the photovoltaic assembly (131) is arranged as an upper and lower two-layer structure; The cold storage plates are respectively arranged on the inner side of the east wall and the inner side of the west wall of the cold storage, on both sides of the heat preservation partition (420), and at the angle between the south and north inner walls of the cold storage and the ceiling; The cold storage plate (210) is provided with a cold medium salt solution. ; A DC fan (310) is disposed in each freezing chamber (410) of the cold storage (400), each DC fan (310) is disposed at a top center position, and cold storage plates (210) are disposed around the inner side of each freezing chamber (410); The inclination angle of the photovoltaic assembly (131) is set to 40° to 50°, and the photovoltaic assembly placed in the lower layer is allowed to be partially blocked by the photovoltaic assembly in the upper layer around the summer solstice; The windmill (121) is placed between the horizontal positions of the two top groups of photovoltaic components (131), and the controller (110) is arranged in the space below the photovoltaic components (131).

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