Special fresh-keeping device for kiwi fruits

Abstract

The utility model discloses a special fresh-keeping device for kiwi fruits, which comprises a storage body heat preservation structure, a refrigeration system, a humidification system and a ventilation system, and the refrigeration system, the humidification system and the ventilation system are respectively arranged in the storage body heat preservation structure; the refrigerating system comprises a refrigerating combined structure and a refrigerating pipe set. The humidifying system comprises a humidifying structure and a humidifying pipe set, and the humidifying pipe set is matched with the refrigerating pipe set. The ventilation system comprises fresh air exchange equipment and a fresh air pipe set, the end, away from the fresh air exchange equipment, of the fresh air pipe set extends into the warehouse body heat preservation structure, and the fresh air pipe set is matched with the refrigeration combination structure. The storage condition in the heat preservation structure of the storage body can be adjusted to the most suitable environment, so that the stability of the storage environment of the kiwi fruits can be guaranteed, and the influence of water drops on the kiwi fruits is reduced; moreover, the storage period of the kiwi fruits is greatly prolonged, and the freshness of the fruits is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of fruit and vegetable preservation, and in particular to a special preservation device for kiwifruit. Background Art

[0002] However, due to the storage characteristics of kiwifruit, it is very easy to soften and rot at room temperature (higher temperature). Therefore, the storage temperature, gas concentration, suitability and cleanliness of kiwifruit must be controlled. Therefore, refrigeration in a mechanical cold storage or a controlled atmosphere storage (controlled atmosphere tent and film small packaging bag refrigeration) can achieve a good preservation effect.

[0003] When kiwifruit is stored in a cold storage in the related art, the kiwifruit needs to maintain reasonable temperature, humidity and gas conditions in addition to avoiding ripening due to its storage conditions. Commonly used refrigeration devices are not gentle enough during cooling and humidification, which may form water droplets and fall directly on the kiwifruit, affecting the kiwifruit. As a result, the stability of the kiwifruit storage environment cannot be guaranteed, which in turn leads to problems such as short storage period of kiwifruit and poor freshness of the fruit. Utility Model Content

[0004] The purpose of the present application is to provide a special fresh-keeping device for kiwi fruit, so as to solve the problem that the commonly used refrigeration devices are not gentle enough during cooling and humidification, which may form water droplets and fall directly on the kiwi fruit, thereby affecting the kiwi fruit, thereby failing to ensure the stability of the kiwi fruit storage environment, and further resulting in the problems of short kiwi fruit storage period and poor freshness of the fruit.

[0005] The present application provides a kiwifruit-specific fresh-keeping device that adopts the following technical solution:

[0006] A special kiwi fruit preservation device comprises a storage body insulation structure, a refrigeration system, a humidification system and a ventilation system, wherein the refrigeration system, the humidification system and the ventilation system are respectively arranged inside the storage body insulation structure;

[0007] The refrigeration system comprises a refrigeration combination structure arranged in the storage body insulation structure, and the air outlet of the refrigeration combination structure is connected to a refrigeration pipe group;

[0008] The humidification system comprises a humidification structure arranged outside the storage body insulation structure, a humidification pipe group connected to the humidification structure is arranged inside the storage body insulation structure, and the humidification pipe group cooperates with the refrigeration pipe group;

[0009] The ventilation system includes a fresh air ventilation device arranged outside the warehouse insulation structure, the fresh air ventilation device is connected to a fresh air duct group, one end of the fresh air duct group away from the fresh air ventilation device extends into the warehouse insulation structure, and the fresh air duct group cooperates with the refrigeration combination structure.

[0010] Furthermore, the refrigeration pipe group includes an air cooler coil arranged at the air outlet of the refrigeration combination structure, and the air outlet of the air cooler coil is connected to a fiber air duct.

[0011] Furthermore, the refrigeration combination structure is a combination of a frequency conversion unit, a dry evaporator and an electronic expansion valve.

[0012] Furthermore, the humidifying pipe group includes a humidifying pipe arranged in the heat-insulating structure of the storage body, one end of the humidifying pipe is connected to the water outlet of the humidifying structure, and a plurality of humidifying nozzles are arranged on the humidifying pipe.

[0013] Furthermore, the fresh air duct group includes a fresh air duct connected to the air supply outlet of the fresh air ventilation equipment, the return air outlet of the fresh air ventilation equipment is connected to the return air duct, and the fresh air duct and the return air duct respectively extend into the insulation structure of the warehouse at one end away from the fresh air ventilation equipment.

[0014] Furthermore, primary and secondary efficiency filtration systems are provided in both the fresh air duct and the return air duct.

[0015] Furthermore, the air outlet of the fresh air duct is located on a side of the refrigeration combination structure away from the fiber air duct.

[0016] Furthermore, a control system is also provided outside the thermal insulation structure of the warehouse, and the control system is respectively connected to the refrigeration system, the humidification system and the ventilation system to control the refrigeration system, the humidification system and the ventilation system respectively.

[0017] Furthermore, a temperature probe, a humidity probe and a CO2 probe are also provided inside the thermal insulation structure of the warehouse, and the temperature probe, the humidity probe and the CO2 probe are respectively connected to the control system.

[0018] Furthermore, a plurality of storage racks are arranged in the heat-insulating structure of the warehouse, a plurality of packaging cartons are arranged on the storage racks, and a plurality of ventilation holes are opened on the packaging cartons.

[0019] Compared with the prior art, the beneficial effect of the present application is that by setting a structure in which the warehouse insulation structure, the refrigeration system, the humidification system and the ventilation system cooperate with each other, not only can the storage conditions in the warehouse insulation structure be adjusted to the most suitable environment, thereby ensuring the stability of the kiwifruit storage environment and reducing the impact of water droplets on the kiwifruit; but also the storage period of the kiwifruit is greatly increased, ensuring the freshness of the fruit. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of a kiwifruit-specific fresh-keeping device according to an embodiment of the present application.

[0021] Figure 2 It is a schematic diagram of the structure of the refrigeration system and the humidification system of the embodiment of the present application.

[0022] Figure 3 It is a schematic diagram of the positions of the temperature probe, humidity probe and CO2 probe in the embodiment of the present application.

[0023] Explanation of the accompanying reference numerals: 1. Warehouse insulation structure; 11. Sliding door; 12. Storage rack; 2. Refrigeration system; 21. Air cooler; 22. Air cooler coil; 23. Fiber duct; 3. Humidification system; 31. Humidification structure; 32. Humidification duct; 33. Humidification nozzle; 4. Ventilation system; 41. Fresh air ventilation equipment; 42. Fresh air duct; 43. Return air duct; 5. Temperature probe; 6. Humidity probe; 7. CO2 probe. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-3 This application is described in further detail.

[0025] The present application embodiment discloses a kiwifruit-specific fresh-keeping device. Figure 1 and Figure 2 In this embodiment, the preservation device includes a storage insulation structure 1, a refrigeration system 2, a humidification system 3 and a ventilation system 4. The storage insulation structure 1 is a cold storage for storing kiwifruit. The outer structure of the entire cold storage is constructed with an insulation structure, so that the cold storage has a good insulation effect; and a sliding door 11 is installed on one side of the cold storage to facilitate the entry and exit of staff.

[0026] At the same time, a plurality of storage racks 12 are installed in the heat-insulating structure 1 of the cold storage body, and a plurality of packaging cartons are placed on the storage racks 12. The packaging cartons are provided with a plurality of air holes to facilitate ventilation of the packaging cartons. When kiwifruits need to be stored, the kiwifruits need to be packaged and stored intact in packaging cartons in advance, and then placed in the storage racks 12 of the cold storage in turn, so as to ensure the cleanliness of the kiwifruits.

[0027] At the same time, the refrigeration system 2, the humidification system 3 and the ventilation system 4 are respectively installed inside the storage insulation structure 1. By setting the refrigeration system 2, the humidification system 3 and the ventilation system 4 to cooperate with each other, not only can the storage conditions in the cold storage be adjusted to the most suitable environment, thereby ensuring the stability of the kiwifruit storage environment and reducing the impact of water droplets on the kiwifruit; but also the storage period of the kiwifruit is greatly increased, ensuring the freshness of the fruit.

[0028] The structures of the refrigeration system 2, the humidification system 3 and the ventilation system 4 are described in detail below:

[0029] Specifically, refer to Figure 1 and Figure 2 In this embodiment, the refrigeration system 2 includes a refrigeration assembly structure and a refrigeration pipe group. The refrigeration assembly structure is installed inside the storage insulation structure 1, and the cold source on the refrigeration assembly structure adopts constant temperature water supply; the refrigeration pipe group is connected to the air outlet of the refrigeration assembly structure, and the refrigeration pipe group includes a cold air coil 22 and a fiber air duct 23; the cold air coil 22 is installed at the air outlet of the refrigeration assembly structure, and the fiber air duct 23 is installed on the end of the cold air coil 22 away from the refrigeration assembly structure, and the fiber air duct 23 is located on the top of the storage racks 12.

[0030] By setting up a refrigeration combination structure, a cold air coil 22 and a fiber air duct 23 that cooperate with each other, the interior of the warehouse insulation structure 1 can be cooled, so that the temperature inside the warehouse insulation structure 1 drops to the optimal temperature of kiwi fruit within the range of -1°C to 0°C, thereby ensuring the storage quality of kiwi fruit.

[0031] More specifically, before storing kiwifruit, it is necessary to determine the refrigeration capacity of the cold storage according to the actual purchase volume of kiwifruit, so as to select appropriate refrigeration equipment; and the refrigeration combination structure of this embodiment is composed of a frequency conversion unit, a special dry evaporator and an electronic expansion valve, and the frequency conversion unit runs the frequency conversion program to automatically adjust the load, so as to automatically adjust the throttling amount of the electronic expansion valve, so as to always ensure that the evaporator outlet water temperature is -4.5°C and the return water temperature is -2.5°C, so that the inlet and outlet water temperature difference is constant at 2K.

[0032] At the same time, the evaporator is a cold air blower 21, which is connected to the cold air blower coil 22 and the fiber air duct 23 in sequence. By designing the cold air blower 21 to have a small heat exchange temperature difference and a large air volume, the temperature accuracy requirement can be met. At the same time, in order to ensure the uniformity of the gas temperature field and humidity field inside the warehouse insulation structure 1, the cold air blower 21 adopts the fiber air duct 23 to deliver air, which can better avoid the "dead corner" of the air flow, thereby better ensuring that the temperature field and humidity field avoid differences.

[0033] In addition, refer to Figure 3By installing multiple temperature probes 5 inside the warehouse insulation structure 1, and using a PID control valve to cooperate with the temperature probe 5, the temperature inside the warehouse insulation structure 1 is sensed by the temperature probe 5, so that the temperature probe 5 can quickly make a processing judgment and send a signal to the PID control valve, so that the PID control valve can adjust the temperature, thereby achieving stable control of the warehouse temperature.

[0034] In addition, refer to Figure 2 and Figure 3 In this embodiment, the humidification system 3 includes a humidification structure 31 and a humidification pipe group. The humidification structure 31 is installed outside the storage body insulation structure 1. The humidification structure 31 is a centralized functional ultra-high pressure pulse atomizing humidifier, which is interconnected with the external water storage tank through a water suction pipe to convert the water in the water storage tank into moisture. The humidification pipe group is arranged above the interior of the storage body insulation structure 1. The humidification pipe group is interconnected with the humidification structure 31, and the humidification pipe group includes a humidification pipe 32 and a humidification nozzle 33. One end of the humidification pipe 32 is connected to the water outlet of the humidification structure 31. The humidification pipe 32 is located above the interior of the storage body insulation structure 1; there are multiple humidification nozzles 33, and multiple humidification nozzles 33 are evenly installed on the pipe body of the humidification pipe 32.

[0035] When it is necessary to humidify the interior of the warehouse insulation structure 1, the humidifier discharges moisture into the humidification pipe 32, and then the moisture is sprayed out from the humidification nozzles 33 on the humidification pipe 32 to effectively humidify the environment in the warehouse insulation structure 1, so that the kiwi fruit can be stored in an environment with an optimal relative humidity, thereby reducing the occurrence of problems such as kiwi fruit losing water, causing wrinkled skin, and affecting taste.

[0036] Preferably, in this embodiment, the humidification pipe group and the refrigeration pipe group cooperate with each other. Specifically, the humidification pipe 32 is evenly arranged around the fiber air duct 23. In this way, the wind speed generated by the cold air fan 21 can be utilized to evenly and quickly disperse the moisture molecules sprayed from the humidification nozzle 33 to the surroundings of the warehouse insulation structure 1, thereby meeting the uniformity of humidity in the warehouse insulation structure 1.

[0037] At the same time, multiple humidity probes 6 are evenly installed around the interior of the warehouse insulation structure 1. The multiple humidity probes cooperate with the humidifier to monitor the humidity inside the warehouse insulation structure 1 respectively. When the humidity probe 6 detects that the humidity inside the warehouse insulation structure 1 deviates from the optimal humidity, the humidifier needs to be turned on to effectively humidify the environment inside the warehouse insulation structure 1.

[0038] In addition, refer to Figure 1In this embodiment, the ventilation system 4 includes a fresh air ventilation device 41 and a fresh air duct group. The fresh air ventilation device 41 is installed on the external side of the warehouse insulation structure 1; the fresh air duct group is connected to the air supply outlet and the return air outlet of the fresh air ventilation device 41, and the end of the fresh air duct group away from the fresh air ventilation device 41 extends into the warehouse insulation structure 1, and the fresh air duct group includes a fresh air duct 42 and a return air duct 43; one end of the fresh air duct 42 is connected to the air supply outlet of the fresh air ventilation device 41, and the end of the fresh air duct 42 away from the fresh air ventilation device 41 extends into the warehouse insulation structure 1; one end of the return air duct 43 is connected to the return air outlet of the fresh air ventilation device 41, and the end of the return air duct 43 away from the fresh air ventilation device 41 extends into the warehouse insulation structure 1.

[0039] When the fresh air ventilation device 41 is started, the external air can be absorbed into the fresh air ventilation device 41, and the fresh air ventilation device 41 filters and purifies the external air to obtain clean fresh air, and then the fresh air is discharged into the interior of the warehouse insulation structure 1 along the fresh air duct 42; at the same time, the gas inside the warehouse insulation structure 1 is sucked into the fresh air ventilation device 41 along the return air duct 43, and the fresh air ventilation device 41 transports the gas to the outside of the warehouse insulation structure 1, thereby achieving the effect of effective ventilation and air exchange outside and inside the warehouse insulation structure 1, thereby avoiding the situation where the oxygen concentration is too low or the carbon dioxide and ethylene concentrations are too high to cause damage to the kiwi fruit.

[0040] Preferably, the fresh air duct group and the refrigeration combination structure cooperate with each other. Specifically, the air outlet of the fresh air duct 42 on the fresh air duct group is located on the side of the air cooler 21 away from the fiber air duct 23. In this way, the cold air blown out by the air cooler coil 22 and the fiber air duct 23 is used to transport the fresh air delivered by the fresh air duct 42 to the interior of the warehouse insulation structure 1, so as to replace the indoor air, thereby achieving the purpose of fresh air ventilation and ensuring that the temperature field inside the warehouse insulation structure 1 is not affected.

[0041] At the same time, refer to Figure 1 and Figure 3 A primary and secondary efficiency filtration system is installed in the fresh air duct 42 and the return air duct 43, and the fresh air system in this embodiment adopts a 100,000-level purification system. By utilizing the primary and secondary efficiency filtration system, and installing multiple CO2 probes 7 inside the warehouse insulation structure 1, the concentration of carbon dioxide gas can be monitored at all times, so that the air breathed by the kiwifruit can meet the 100,000-level purified oxygen-rich fresh air, so that the dust-free, sterile oxygen-rich fresh air enters the warehouse insulation structure 1, thereby achieving the effect of strictly controlling the gas composition during the storage time.

[0042] Secondly, in this embodiment, a control system is also provided outside the warehouse insulation structure 1. The control system adopts a PLC automatic control system, and the control system is respectively interconnected with the refrigeration system 2, the humidification system 3 and the ventilation system 4 to control the refrigeration system 2, the humidification system 3 and the ventilation system 4 respectively; at the same time, the control system is also respectively interconnected with the temperature probe 5, the humidity probe 6 and the CO2 probe 7 to control the temperature probe 5, the humidity probe 6 and the CO2 probe 7 respectively.

[0043] In this way, the refrigeration system 2, the humidification system 3 and the ventilation system 4 are adjusted to the set values ​​by using the PLC automatic control system, and then the temperature probes 5, the humidity probes 6 and the CO2 probes 7 in the warehouse insulation structure 1 are used to monitor the internal environment of the warehouse insulation structure 1 at all times, so that the kiwifruit can be kept in the most suitable storage environment.

[0044] When it senses that the temperature concentration and humidity concentration are lower than the set value, the PLC automatic control system automatically starts the refrigeration system 2 and the humidification system 3 to perform refrigeration and humidification respectively, and stops automatically when the temperature concentration and humidity concentration reach the set value; when the carbon dioxide concentration is higher than the set value, the ventilation system 4 is enabled for ventilation and air exchange, and stops automatically when the carbon dioxide concentration drops to the set value, thereby achieving automatic control and liberating manpower, and then remotely controlling and monitoring the storage environment from a computer, and the staff only needs to perform daily inspections and maintenance.

[0045] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A special kiwi fruit preservation device, characterized in that: It comprises a warehouse thermal insulation structure (1), a refrigeration system (2), a humidification system (3) and a ventilation system (4), wherein the refrigeration system (2), the humidification system (3) and the ventilation system (4) are respectively arranged inside the warehouse thermal insulation structure (1); The refrigeration system (2) comprises a refrigeration assembly structure arranged in the storage body heat preservation structure (1), and the air outlet of the refrigeration assembly structure is connected to a refrigeration pipe group; The humidification system (3) comprises a humidification structure (31) arranged outside the storage body heat preservation structure (1), a humidification pipe group connected to the humidification structure (31) is arranged inside the storage body heat preservation structure (1), and the humidification pipe group cooperates with the refrigeration pipe group; The ventilation system (4) comprises a fresh air ventilation device (41) arranged outside the warehouse insulation structure (1), the fresh air ventilation device (41) is connected to a fresh air duct group, one end of the fresh air duct group away from the fresh air ventilation device (41) extends into the warehouse insulation structure (1), and the fresh air duct group cooperates with the refrigeration combination structure.

2. The kiwifruit-specific fresh-keeping device according to claim 1, characterized in that: The refrigeration pipe group comprises a cooling air coil (22) arranged at the air outlet of the refrigeration combination structure, and the air outlet of the cooling air coil (22) is connected to a fiber air duct (23).

3. The kiwifruit fresh-keeping device according to claim 2, characterized in that: The refrigeration combination structure is a combination of a frequency conversion unit, a dry evaporator and an electronic expansion valve.

4. The kiwifruit-specific fresh-keeping device according to claim 1, characterized in that: The humidifying pipe group comprises a humidifying pipe (32) arranged in the storage body insulation structure (1), one end of the humidifying pipe (32) is connected to the water outlet of the humidifying structure (31), and a plurality of humidifying nozzles (33) are arranged on the humidifying pipe (32).

5. The kiwifruit-specific fresh-keeping device according to claim 3, characterized in that: The fresh air duct group comprises a fresh air duct (42) connected to the air supply outlet of the fresh air ventilation device (41); the return air outlet of the fresh air ventilation device (41) is connected to a return air duct (43); and one end of the fresh air duct (42) and the return air duct (43) away from the fresh air ventilation device (41) respectively extends into the warehouse insulation structure (1).

6. The kiwifruit-specific fresh-keeping device according to claim 5, characterized in that: The fresh air duct (42) and the return air duct (43) are both provided with primary and secondary efficiency filtering systems.

7. The kiwifruit-specific fresh-keeping device according to claim 5, characterized in that: The air outlet of the fresh air duct (42) is located on a side of the refrigeration assembly structure away from the fiber air duct (23).

8. The kiwifruit fresh-keeping device according to claim 1, characterized in that: A control system is also provided outside the storage insulation structure (1), and the control system is respectively connected to the refrigeration system (2), the humidification system (3) and the ventilation system (4) so ​​as to respectively control the refrigeration system (2), the humidification system (3) and the ventilation system (4).

9. The kiwifruit-specific fresh-keeping device according to claim 8, characterized in that: A temperature probe (5), a humidity probe (6) and a CO2 probe (7) are also provided inside the storage body heat preservation structure (1); the temperature probe (5), the humidity probe (6) and the CO2 probe (7) are respectively connected to the control system.

10. The kiwifruit-specific fresh-keeping device according to claim 1, characterized in that: A plurality of storage racks (12) are arranged in the warehouse heat-insulating structure (1), a plurality of packaging cartons are arranged on the storage racks (12), and a plurality of ventilation holes are opened on the packaging cartons.

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