A storage and fresh-keeping device for agricultural products

Abstract

This utility model relates to the field of storage and preservation technology, and more particularly to a storage and preservation device for agricultural products. It includes an agricultural product preservation box with a mounting groove on its rear side. A temperature control component is installed inside the mounting groove. The temperature control component includes a heat-insulating back plate. A compressor, a condenser, and a throttling device are fixedly installed on the rear side of the heat-insulating back plate. A first evaporator, a second evaporator, and a third evaporator are fixedly installed on the inner side of the heat-insulating back plate. The compressor and condenser are connected to the condenser and the third evaporator, respectively. The throttling device is connected between the condenser and the first evaporator. A first electromagnetic control valve is connected between the first and second evaporator. This utility model, through its temperature control component, can achieve precise control of the temperature gradient in the three temperature zones inside the agricultural product preservation box, resulting in a wide temperature adjustment range and applicability to the storage and preservation of various agricultural products, thus enhancing its versatility.

Description

Technical Field

[0001] This utility model relates to the field of storage and preservation technology, and in particular to a storage and preservation device for agricultural products. Background Technology

[0002] In modern agriculture, the storage and preservation of agricultural products are of paramount importance for reducing post-harvest losses, ensuring market supply, and improving the economic benefits of agricultural products. Currently, most agricultural product storage and preservation devices on the market adopt a single temperature control mode, maintaining the same temperature environment throughout the entire storage space. However, different types of agricultural products have significantly different storage temperature requirements due to differences in their physiological characteristics, maturity, and water content. For example, tropical fruits such as bananas and mangoes typically require a storage temperature between 10℃ and 15℃; excessively low temperatures can easily cause chilling injury, leading to discoloration of the peel, browning of the flesh, and other quality deterioration problems. Leafy vegetables such as spinach and lettuce generally require a storage temperature between 0℃ and 4℃, within which respiration and microbial growth can be effectively inhibited, extending their shelf life. Root vegetables such as potatoes and sweet potatoes typically require a storage temperature between 5℃ and 10℃. Storage and preservation devices using a single temperature control mode cannot provide the most suitable storage temperature environment for different types of agricultural products, easily causing some products to rot and spoil faster due to unsuitable temperatures. This not only results in a large amount of waste of agricultural products but also causes serious economic losses to farmers and distributors.

[0003] To address the shortcomings of the aforementioned technologies, we propose a storage and preservation device for agricultural products. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a storage and preservation device for agricultural products.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A storage and preservation device for agricultural products includes an agricultural product preservation box. An installation slot is provided on the rear side of the preservation box, and a temperature control component is installed inside the installation slot. The temperature control component includes a heat-insulating back plate. A compressor, a condenser, and a throttling device are fixedly installed on the rear side of the heat-insulating back plate. A first evaporator, a second evaporator, and a third evaporator are fixedly installed on the inner side of the heat-insulating back plate. The compressor and the condenser are respectively connected to the condenser and the third evaporator. The throttling device is connected and installed between the condenser and the first evaporator. A first electromagnetic control valve is connected and installed between the first evaporator and the second evaporator. A second electromagnetic control valve is connected and installed between the second evaporator and the third evaporator.

[0006] Furthermore, a partition is fixedly installed on the rear side of the inner wall of the agricultural product preservation box, and three sets of supplementary lights and temperature sensors are fixedly installed on the partition.

[0007] By adopting the above technical solution, three sets of supplementary lights and temperature sensors are used to provide supplementary lighting and illumination to three areas inside the agricultural product preservation box.

[0008] Furthermore, the agricultural product preservation box is equipped with two sets of partition components inside. Each partition component includes a heat insulation pad, and mounting side plates are fixedly connected to both sides of the heat insulation pad. The mounting side plates are screwed onto the inner wall of the agricultural product preservation box.

[0009] Furthermore, an inclined plate is fixedly installed on the upper side of the heat insulation pad, and several inclined grooves are evenly distributed on the upper side of the inclined plate.

[0010] By adopting the above technical solution, the two sets of heat insulation pads divide the internal area of ​​the agricultural product preservation box into three areas, and the inclined grooves on the inclined plates are used to guide and drain condensate.

[0011] Furthermore, both the inclined plate and the inclined groove are sloped to both sides.

[0012] Furthermore, the upper heat insulation pad is installed at the junction of the first evaporator tube and the second evaporator tube, and the lower heat insulation pad is installed at the junction of the second evaporator tube and the third evaporator tube.

[0013] By adopting the above technical solution, the distribution intervals of the first evaporator, the second evaporator, and the third evaporator are increased from small to large. Thus, the heat insulation pad divides the interior of the agricultural product preservation box into three temperature zones for storing different agricultural products.

[0014] Furthermore, the inner walls of the agricultural product preservation box are provided with several vertical drainage grooves on both sides, and the positions of the vertical drainage grooves correspond one-to-one with the inclined grooves.

[0015] Furthermore, a top guide plate is fixedly installed on the top of the agricultural product preservation box, and the bottom of the top guide plate is sloped to both sides.

[0016] By adopting the above technical solution, the bottom of the top guide plate is set to slope to both sides, so that the condensate at the top is guided to both sides, and then flows through the drainage vertical channel into the water storage tank at the bottom, and is then discharged to the outside of the agricultural product preservation box through the drainage pipe.

[0017] Furthermore, the bottom of the agricultural product preservation box is provided with a water storage trough, a filter plate is provided above the water storage trough, pads are fixedly installed at the four corners of the filter plate, and a drain pipe is connected to the bottom of the water storage trough, which passes through to the outside of the agricultural product preservation box.

[0018] Furthermore, the agricultural product preservation box is rotatably installed with a door on the front side, and a controller, hollow heat-insulating transparent glass and a handle are fixedly installed on the door.

[0019] By adopting the above technical solution, the installation of insulated transparent glass provides a transparent observation window.

[0020] Compared with related technologies, the storage and preservation device for agricultural products proposed in this utility model has the following beneficial effects: In this invention, an agricultural product storage and preservation device utilizes a temperature control component. During refrigeration and temperature control, a high-temperature, high-pressure refrigerant gas is discharged from a compressor and liquefied in a condenser. The liquefied high-pressure refrigerant is then depressurized through a throttling device (such as an expansion valve), becoming a low-temperature, low-pressure liquid-gas mixture. The depressurized refrigerant sequentially enters the first, second, and third evaporator tubes to absorb heat and evaporate, eventually returning to the compressor to complete the cycle. The spacing between the first, second, and third evaporator tubes decreases sequentially, thus lowering the temperature inside the agricultural product preservation box from top to bottom under normal control. The internal temperature range can be adjusted by controlling the compressor's output power. Furthermore, precise temperature gradient control of the three temperature zones inside the agricultural product preservation box can be achieved by controlling the radial flow rates of the second and third evaporator tubes using the first and second electromagnetic control valves, respectively. This results in a wider temperature control adjustment range inside the agricultural product preservation box, making it suitable for the storage and preservation of various agricultural products and enhancing its applicability. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a storage and preservation device for agricultural products proposed in this utility model. Figure 1 ; Figure 2 This is a three-dimensional structural diagram of a storage and preservation device for agricultural products proposed in this utility model. Figure 2 ; Figure 3 This is a partial three-dimensional structural diagram of a storage and preservation device for agricultural products proposed in this utility model. Figure 1 ; Figure 4 This is a partial three-dimensional structural diagram of a storage and preservation device for agricultural products proposed in this utility model. Figure 2 ; Figure 5 Schematic diagram of a partial three-dimensional structure Figure 1 ; Figure 6 Schematic diagram of a partial three-dimensional structure Figure 2 ; Figure 7 Schematic diagram of a partial three-dimensional structure Figure 3 .

[0022] In the diagram: 1. Agricultural product preservation box; 2. Box door; 3. Controller; 4. Hollow insulated transparent glass; 5. Handle; 6. Mounting groove; 7. Temperature control component; 71. Insulated back panel; 72. Compressor; 73. Condenser; 74. Throttling device; 75. First evaporator tube; 76. Second evaporator tube; 77. Third evaporator tube; 78. First electromagnetic control valve; 79. Second electromagnetic control valve; 8. Partition plate; 9. Water storage tank; 10. Filter plate; 11. Foot pad; 12. Drain pipe; 13. Partition component; 131. Insulation pad; 132. Inclined plate; 133. Inclined groove; 134. Mounting side panel; 14. Top guide plate; 15. Supplemental light; 16. Temperature sensor; 17. Drainage vertical groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figures 1-7 A storage and preservation device for agricultural products includes an agricultural product preservation box 1. An installation groove 6 is provided on the rear side of the agricultural product preservation box 1, and a temperature control component 7 is installed inside the installation groove 6. The temperature control component 7 includes a heat insulation back plate 71. A compressor 72, a condenser 73, and a throttling device 74 are fixedly installed on the rear side of the heat insulation back plate 71. A first evaporator 75, a second evaporator 76, and a third evaporator 77 are fixedly installed on the inner side of the heat insulation back plate 71. The compressor 72 and the condenser 73 are respectively connected to the condenser 73 and the third evaporator 77. The throttling device 74 is connected and installed between the condenser 73 and the first evaporator 75. A first electromagnetic control valve 78 is connected and installed between the first evaporator 75 and the second evaporator 76, and a second electromagnetic control valve 79 is connected and installed between the second evaporator 76 and the third evaporator 77.

[0025] In this embodiment, the agricultural product preservation box 1 is provided with two sets of partition components 13. The partition components 13 include heat insulation pads 131. The heat insulation pads 131 are fixedly connected to the two sides of the mounting side plates 134. The mounting side plates 134 are screwed onto the inner wall of the agricultural product preservation box 1. An inclined plate 132 is fixedly installed on the upper side of the heat insulation pads 131. Several inclined grooves 133 are evenly distributed on the upper side of the inclined plate 132. The upper sides of the inclined plate 132 and the inclined grooves 133 are sloped to both sides.

[0026] With the above structure, the two sets of heat insulation pads 131 divide the interior of the agricultural product preservation box 1 into three temperature zones. During the preservation and storage process, condensation will be generated. When the condensation falls onto the inclined plate 132, it will be guided to both sides by the slope of the inclined groove 133, which will prevent the condensation from accumulating at the bottom and causing soaking damage to the stored agricultural products. It can keep the internal storage area of ​​the agricultural product preservation box 1 dry, and has a more comprehensive protection effect on refrigerated items compared with traditional refrigerators.

[0027] In this embodiment, several drainage vertical grooves 17 are evenly distributed on both sides of the inner wall of the agricultural product preservation box 1. The positions of the drainage vertical grooves 17 correspond one-to-one with the inclined grooves 133. A top guide plate 14 is fixedly installed on the top of the agricultural product preservation box 1. The bottom of the top guide plate 14 is sloped to both sides. A water storage trough 9 is opened at the bottom of the agricultural product preservation box 1. A filter plate 10 is set above the water storage trough 9. Foot pads 11 are fixedly installed at the four corners of the filter plate 10. A drain pipe 12 is connected to the bottom of the water storage trough 9 and passes through to the outside of the agricultural product preservation box 1.

[0028] With the above structure, the condensate on the upper side of the agricultural product preservation box 1 will be guided to both sides by the slope at the bottom of the top guide plate 14. The drainage vertical channel 17 is used to receive the condensate guided from the bottom of the top guide plate 14 and the inclined channel 133. Subsequently, the condensate flows into the water storage bottom channel 9 on the lower side through the drainage vertical channel 17, and is finally discharged to the outside of the agricultural product preservation box 1 by the drain pipe 12.

[0029] In this embodiment, the upper heat insulation pad 131 is installed at the junction of the first evaporator 75 and the second evaporator 76, and the lower heat insulation pad 131 is installed at the junction of the second evaporator 76 and the third evaporator 77. A partition 8 is fixedly installed on the rear side of the inner wall of the agricultural product preservation box 1, and three sets of supplementary lights 15 and temperature sensors 16 are fixedly installed on the partition 8.

[0030] With the above structure, the two sets of heat insulation pads 131 divide the agricultural product preservation box 1 into three temperature zones, and the three sets of supplementary lights 15 and temperature sensors 16 are used to monitor the temperature and supplementary lighting effect of the three temperature zones.

[0031] In this embodiment, a door 2 is rotatably installed on the front side of the agricultural product preservation box 1, and a controller 3, a hollow heat-insulating transparent glass 4, and a handle 5 are fixedly installed on the door 2.

[0032] Through the above structure, the insulated transparent glass 4 provides a transparent observation window.

[0033] In this utility model, during use: When the device is started to cool and control the temperature, the compressor 72 first discharges high-temperature and high-pressure refrigerant gas, which enters the condenser 73 and is cooled and liquefied under the action of the condenser 73, thus dissipating the heat. The liquefied high-pressure refrigerant then passes through a throttle valve 74 (such as an expansion valve), undergoing a pressure reduction operation to become a low-temperature, low-pressure liquid-gas mixture. The depressurized refrigerant then sequentially enters the first evaporator 75, the second evaporator 76, and the third evaporator 77. Within these three evaporator tubes, the refrigerant absorbs heat from the surrounding environment and evaporates, thereby cooling the internal space of the agricultural product preservation box 1. As the spacing between the first evaporator 75, the second evaporator 76, and the third evaporator 77 decreases sequentially, under normal control, the temperature inside the agricultural product preservation box 1 decreases sequentially from top to bottom, forming three regions with different temperature gradients. To achieve precise temperature control, the device is equipped with a first electromagnetic control valve 78 and a second electromagnetic control valve 79. By controlling the opening and closing degree of the first electromagnetic control valve 78 through the controller 3, the radial flow rate of the second evaporator 76 can be adjusted; similarly, controlling the second electromagnetic control valve 79 can adjust the radial flow rate of the third evaporator 77. In this way, the temperature gradient of the three temperature zones inside the agricultural product preservation box 1 can be precisely controlled. In addition, the overall temperature range inside the agricultural product preservation box 1 can be adjusted by controlling the output power of the compressor 72, thereby meeting the special requirements of different types of agricultural products for storage temperature. The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A storage and preservation device for agricultural products, characterized by, The product includes an agricultural product preservation box (1), which has an installation groove (6) on the rear side and a temperature control component (7) is provided inside the installation groove (6). The temperature control assembly (7) includes a heat insulation back plate (71). A compressor (72), a condenser (73), and a throttle (74) are fixedly installed on the rear side of the heat insulation back plate (71). A first evaporator (75), a second evaporator (76), and a third evaporator (77) are fixedly installed on the inner side of the heat insulation back plate (71). The compressor (72) and the condenser (73) are respectively connected to the condenser (73) and the third evaporator (77). The throttle (74) is connected between the condenser (73) and the first evaporator (75). A first electromagnetic control valve (78) is connected between the first evaporator (75) and the second evaporator (76). A second electromagnetic control valve (79) is connected between the second evaporator (76) and the third evaporator (77).

2. The device for storing and preserving agricultural products according to claim 1, characterized in that, The agricultural product preservation box (1) has a partition (8) fixedly installed on the rear side of the inner wall. Three sets of supplementary lights (15) and temperature sensors (16) are fixedly installed on the partition (8).

3. The storage and preservation device for agricultural products according to claim 1, characterized in that, The agricultural product preservation box (1) is equipped with two sets of partition components (13). The partition components (13) include heat insulation pads (131). The heat insulation pads (131) are fixedly connected to the two sides of the heat insulation pads (131) and the mounting side plates (134) are screwed onto the inner wall of the agricultural product preservation box (1).

4. The device for storing and preserving agricultural products according to claim 3, characterized in that, An inclined plate (132) is fixedly installed on the upper side of the heat insulation pad (131), and several inclined grooves (133) are evenly distributed on the upper side of the inclined plate (132).

5. The device for storing and preserving agricultural products according to claim 4, characterized in that, The upper sides of both the inclined plate (132) and the inclined groove (133) are sloped to both sides.

6. The device for storing and preserving agricultural products according to claim 3, characterized in that, The upper heat insulation pad (131) is installed at the junction of the first evaporator (75) and the second evaporator (76), and the lower heat insulation pad (131) is installed at the junction of the second evaporator (76) and the third evaporator (77).

7. The device for storing and preserving agricultural products according to claim 1, characterized in that, The inner walls of the agricultural product preservation box (1) are provided with several drainage vertical grooves (17), and the positions of the drainage vertical grooves (17) correspond one-to-one with the inclined grooves (133).

8. The storage and preservation device for agricultural products according to claim 1, characterized in that, The top of the agricultural product preservation box (1) is fixedly installed with a top guide plate (14), and the bottom of the top guide plate (14) is sloped to both sides.

9. The device for storing and preserving agricultural products according to claim 1, characterized in that, The agricultural product preservation box (1) has a water storage trough (9) at the bottom, a filter plate (10) is provided above the water storage trough (9), and pads (11) are fixedly installed at the four corners of the filter plate (10). A drain pipe (12) is connected to the bottom of the water storage trough (9), and the drain pipe (12) passes through to the outside of the agricultural product preservation box (1).

10. A storage and preservation device for agricultural products according to claim 1, characterized in that, The agricultural product preservation box (1) has a door (2) that is rotatably installed on the front side. The door (2) is fixedly equipped with a controller (3), hollow heat-insulating transparent glass (4) and a handle (5).

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