Foldable flexible pre-cooling and fresh-keeping device based on solar energy

Abstract

The invention discloses a foldable flexible pre-cooling and fresh-keeping device based on solar energy, which is composed of a flexible heat-insulating storage body, a flexible solar photovoltaic panel, an energy storage battery, an inverter, a generator, a frequency converter, and an integrated refrigerator. The whole set of devices is easy to disassemble, and the storage body and the solar photovoltaic panel can be rolled or folded for easy handling. The power supply system uses solar energy and generator coupling, and the voltage reduction start of the refrigeration unit is realized through the frequency converter. The power supply mode can be automatically switched between solar energy, energy storage batteries and generators, so as to achieve the purpose of making full use of solar energy for refrigeration. The material of the invention is easy to obtain, and the handling volume can be reduced by folding and curling, and solar energy is preferentially used for power supply, which is particularly suitable for on-site pre-cooling and fresh-keeping of fruits and vegetables in remote areas without electricity.

Description

Technical Field

[0001] The invention relates to the technical field of pre-cooling and fresh-keeping facilities, and in particular to a foldable and flexible pre-cooling and fresh-keeping device based on solar energy. Background Art

[0002] On-site precooling and preservation of fruits and vegetables is of great significance for maintaining their quality. At present, precooling of fruits and vegetables is mainly achieved through precooling and fresh-keeping warehouses, but most of the precooling and fresh-keeping warehouses are a certain distance away from the fruit and vegetable planting areas, resulting in the inability to precool and preserve the harvested fruits and vegetables in time, which seriously affects the post-harvest quality and storage period of fruits and vegetables. Especially in remote areas, due to the sparse population, the planting areas are often far away from the precooling and fresh-keeping warehouses, resulting in serious post-harvest losses of fruits and vegetables. In order to solve this problem, mobile precooling and fresh-keeping facilities have received attention. However, at present, precooling facilities are mostly made of hard materials, large in size, difficult to carry, and mostly powered by municipal electricity. They are still not convenient to use in remote areas, especially in some areas without electricity.

[0003] Solar energy is a rich, clean, renewable energy source. Northwest my country has abundant solar energy resources. If solar energy can be installed on mobile pre-cooling and fresh-keeping facilities to achieve solar power supply, it can not only save energy, but also be used in remote areas without electricity. However, due to the high power and energy consumption of refrigeration equipment, high instantaneous current requirements at startup, and in order to achieve portability, a large capacity of solar energy cannot be installed. Therefore, how to start the refrigeration equipment under limited solar power supply conditions is the key to realizing solar priority power supply pre-cooling equipment. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a foldable and flexible pre-cooling and fresh-keeping device based on solar energy.

[0005] The technical solution of the present invention is: a foldable flexible pre-cooling and preservation device based on solar energy, characterized in that: the device includes a flexible insulation storage body, a flexible solar photovoltaic panel, a battery, an inverter, a generator, a frequency converter, and an integrated refrigerator. The integrated refrigerator is arranged on one side of the flexible insulation storage body and is connected to the flexible insulation storage body through a pipeline. The flexible solar photovoltaic panel, the generator, and the battery are all connected to the inverter through a line. The frequency converter is connected to the integrated refrigerant through a line. An electric control cabinet is connected between the inverter and the frequency converter. The flexible insulation storage body and the solar photovoltaic panel are both arranged as a rollable or foldable structure that is easy to disassemble and carry. The power supply system of the device adopts a solar photovoltaic panel coupled with a generator, and realizes a step-down start of the integrated refrigeration unit through a frequency converter. The power supply of the integrated refrigerator is automatically switched between solar energy, energy storage batteries and generators.

[0006] Preferably, the integrated refrigerator is powered by solar energy first, and when the solar energy supply is insufficient, it is jointly powered by energy storage batteries. When both solar energy and energy storage are insufficient, the generator is triggered to supply power, so as to realize coupled power supply of solar energy and generator.

[0007] Preferably, the flexible thermal insulation storage body consists of a composite thermal insulation layer, an airtight thermal insulation layer, and a thermal insulation and rainproof layer.

[0008] Preferably, the installed capacity of the flexible solar photovoltaic panel is 2000-5000W, and is connected to the inverter via a busbar kit.

[0009] Preferably, the integrated refrigerator is configured as a 2P or 3P compressor with a cooling capacity of 3000-6000W.

[0010] Preferably, the generator is a diesel generator with a power of 5000-8000W, and the inverter power is 3000-6000W.

[0011] Preferably, the composite thermal insulation layer is made of silver-grey waterproof thermal insulation cloth on both the inner and outer surfaces, and is filled with thermal insulation material.

[0012] Preferably, the airtight insulation layer is made of PVC coated space cloth with a thickness of 10-30 cm.

[0013] Preferably, the heat-insulating and rain-proof layer is a silver-coated waterproof and heat-insulating cloth.

[0014] Preferably, the thermal insulation material is one or both of polyester fiber and down.

[0015] The beneficial technical effects of the present invention are:

[0016] 1. Both the flexible thermal insulation storage body and the flexible solar photovoltaic panels are made of flexible materials that can be rolled or folded, which is convenient for disassembly and transportation.

[0017] 2. The power supply system uses solar energy coupled with a generator. The power supply mode can automatically switch between solar energy, energy storage batteries and generators, giving priority to the use of solar energy to save energy. It can also be used for on-site pre-cooling and preservation of fruits and vegetables in remote areas without electricity.

[0018] 3. In order to realize solar energy priority power supply, the present invention adds a frequency converter or a soft starter to the integrated refrigerator, which can realize the reduced-voltage starting of the refrigerator under the condition of limited solar energy power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the connection relationship of various components of the present invention.

[0020] Figure 2 This is a schematic diagram of the flexible insulation warehouse structure.

[0021] In the figure, 1. flexible solar photovoltaic panel, 2. inverter, 3. battery, 4. generator, 5. frequency converter, 6. electric control cabinet, 7. flexible insulation storage body, 71. composite insulation layer, 72. airtight insulation layer, 73. heat insulation and rainproof layer, 8. integrated refrigerator. DETAILED DESCRIPTION

[0022] Example 1, see the attached specification Figure 1 - 2. A foldable, flexible pre-cooling and fresh-keeping device based on solar energy, characterized in that: the device includes a flexible thermal insulation storage body, a flexible solar photovoltaic panel, a battery, an inverter, a generator, a frequency converter, and an integrated refrigerator. The integrated refrigerator is arranged on one side of the flexible thermal insulation storage body and connected to the flexible thermal insulation storage body through a pipeline. The flexible solar photovoltaic panel, the generator, and the battery are all connected to the inverter through a line. The frequency converter is connected to the integrated refrigerant through a line. An electric control cabinet is connected between the inverter and the frequency converter. The flexible thermal insulation storage body and the solar photovoltaic panel are both arranged to be rollable or foldable structures for easy disassembly and transportation. The power supply system of the device adopts the coupling of solar photovoltaic panels and generators, and realizes the step-down start of the integrated refrigeration unit through the frequency converter. The power supply of the integrated refrigerator is automatically switched between solar energy, energy storage batteries and generators.

[0023] The integrated refrigerator is powered by solar energy first, and when the solar energy is insufficient, it is powered by energy storage batteries. When both solar energy and energy storage are insufficient, a generator is triggered to supply power, so as to achieve coupled power supply of solar energy and generator.

[0024] The flexible insulation storage body is composed of a composite insulation layer, an airtight insulation layer, and a heat-insulating and rainproof layer. The installed capacity of the flexible solar photovoltaic panel is 2000-5000W, and it is connected to the inverter through a convergence kit. The volume of the flexible insulation storage body is 30 cubic meters and the size is 4m×3m×2.5m.

[0025] The integrated refrigerator is configured as a 2P or 3P compressor with a cooling capacity of 3000-6000W.

[0026] The generator is a diesel generator with a power of 5000-8000W, and the inverter power is 3000-6000W.

[0027] The composite thermal insulation layer is made of silver-grey waterproof thermal insulation cloth on both the inner and outer surfaces, and is filled with thermal insulation material.

[0028] The airtight insulation layer is made of PVC coated space cloth with a thickness of 10-30 cm, the heat insulation and rainproof layer is made of silver-coated waterproof insulation cloth, and the insulation material is polyester fiber (70%) and down (30%) as insulation material.

[0029] The use process and principle of the present invention are:

[0030] The flexible thermal insulation storage body and the flexible solar photovoltaic panel are both made of flexible materials that can be rolled or folded, which are convenient for disassembly and transportation; the power supply system adopts solar energy and generator coupling, and the power supply mode can be automatically switched between solar energy, energy storage batteries and generators, giving priority to the use of solar energy to save energy, and can be used for on-site pre-cooling and preservation of fruits and vegetables in remote areas without electricity; in order to realize solar energy priority power supply, the present invention installs a frequency converter or a soft starter on the integrated refrigerator, which can realize the step-down starting of the refrigerator under limited solar energy power supply conditions.

Claims

1. A foldable and flexible pre-cooling and fresh-keeping device based on solar energy, characterized in that: The device includes a flexible thermal insulation storage body, a flexible solar photovoltaic panel, a battery, an inverter, a generator, a frequency converter, and an integrated refrigerator. The integrated refrigerator is arranged on one side of the flexible thermal insulation storage body and connected to the flexible thermal insulation storage body through a pipeline. The flexible solar photovoltaic panel, the generator, and the battery are connected to the inverter through a line. The frequency converter is connected to the integrated refrigerant through a line. An electric control cabinet is connected between the inverter and the frequency converter. The flexible thermal insulation storage body and the solar photovoltaic panel are arranged to be rollable or foldable structures for easy disassembly and transportation. The power supply system of the device adopts the coupling of the solar photovoltaic panel and the generator, and The integrated refrigeration unit is started by stepping down voltage through a frequency converter, and the power supply of the integrated refrigeration machine is automatically switched between solar energy, energy storage batteries and generators; the integrated refrigeration machine is powered by solar energy first, and when the solar energy supply is insufficient, the energy storage battery is used to supply power; when both solar energy and energy storage are insufficient, the generator is triggered to supply power, so as to realize the coupled power supply of solar energy and generator; the installed capacity of the flexible solar photovoltaic panel is 2000-5000W, and it is connected to the inverter through a convergence kit; the integrated refrigeration machine is configured as a 2P or 3P compressor with a cooling capacity of 3000-6000W.

2. A foldable, flexible, pre-cooling and fresh-keeping device based on solar energy according to claim 1, characterized in that: The flexible heat-insulating storage body consists of a composite heat-insulating layer, an airtight heat-insulating layer, and a heat-insulating and rain-proof layer.

3. The foldable and flexible pre-cooling and fresh-keeping device based on solar energy according to claim 1, characterized in that: The generator is a diesel generator with a power of 5000-8000W, and the inverter power is 3000-6000W.

4. The foldable and flexible pre-cooling and fresh-keeping device based on solar energy according to claim 2, characterized in that: The composite thermal insulation layer is made of silver-grey waterproof thermal insulation cloth on both the inner and outer surfaces, and is filled with thermal insulation material.

5. The foldable and flexible pre-cooling and fresh-keeping device based on solar energy according to claim 2, characterized in that: The airtight insulation layer is made of PVC coated space cloth with a thickness of 10-30 cm.

6. The foldable and flexible pre-cooling and fresh-keeping device based on solar energy according to claim 2, characterized in that: The heat-insulating and rain-proof layer is a silver-coated waterproof heat-insulating cloth.

7. A foldable and flexible pre-cooling and fresh-keeping device based on solar energy according to claim 6, characterized in that: The thermal insulation material is one or both of polyester fiber and down.

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