Energy-saving vegetable frosting machine and method thereof

Abstract

A vegetable flow channel is arranged in a cabinet, the vegetable flow channel is formed by sequentially connecting a plurality of temperature control areas, a heat preservation partition plate is arranged between every two adjacent temperature control areas, and each temperature control area comprises a pre-cooling area located at the inlet end of the vegetable flow channel and a frosting area located at the outlet end of the vegetable flow channel; the pre-cooling area is connected with the frosting area through a plurality of low-temperature areas, a conveying mechanism is arranged at the bottom of the vegetable flow channel, a conveying frame of a vegetable planting plate is arranged in the vegetable flow channel, and vegetables on the vegetable planting plate pass through the pre-cooling area, the low-temperature areas and the frosting area to form frosted vegetables. According to the invention, frosted vegetables produced under natural conditions can be simulated, the quality of vegetable products is remarkably improved, and the requirements of people on high-quality vegetables are met.

Description

Technical Field

[0001] The invention relates to the technical field of vegetable production equipment, and in particular to an energy-saving frost-bitten vegetable machine and a method thereof. Background Art

[0002] As we all know, many green leafy vegetables such as pak choi become sweeter and have a significantly better taste after experiencing low-temperature frost during their natural growth, making them high-quality vegetables. However, the suitable temperature for the growth of pak choi is 15-25°C. When the temperature is below 15°C, the pak choi grows slowly and cannot meet the requirements of large-scale vegetable production. At the same time, too low a temperature will have an adverse effect on the growth of pak choi. Therefore, there are very few vegetables that have experienced low-temperature frost naturally in the market, which cannot meet people's demand for high-quality vegetables. A Chinese patent document with a publication date of August 6, 2021 and publication number of CN 113207501 A discloses an organic vegetable production system, including a cabinet, a rotating shaft rotatably provided in the cabinet, the rotating shaft is connected to a reduction motor through a transmission device, and the reduction motor is fixedly arranged in the cabinet; a plurality of planting units are fixedly arranged on the rotating shaft, and the planting units can rotate in the cabinet, and the planting units include a bracket and a main planting tray, the bracket is conical, and the bottom surface of the cone faces upward, and a reflective convex lens corresponding to its shape is provided on the outer surface of the bracket, the bracket is fixedly mounted on the rotating shaft, and the main planting tray is fixedly arranged on the bracket. This organic vegetable production system can grow organic vegetables indoors. However, this organic vegetable production system cannot meet people's production needs for high-quality vegetables such as frost-bitten vegetables. Summary of the invention

[0003] The purpose of the present invention is to solve the problem that existing vegetable production equipment cannot meet people's production needs for high-quality vegetables such as frost-bitten vegetables, and to provide an energy-saving frost-bitten vegetable machine and method thereof, which can significantly improve the quality of vegetable products and meet people's demand for high-quality vegetables.

[0004] The specific technical solution adopted by the present invention to solve the above-mentioned technical problems is an energy-saving frost-bitten vegetable machine, including a cabinet and a control system. A vegetable flow channel is arranged in the cabinet. The vegetable flow channel is composed of a plurality of temperature control zones connected in sequence. An insulation partition is arranged between adjacent temperature control zones. The temperature control zone includes a pre-cooling zone located at the inlet end of the vegetable flow channel and a frost zone located at the outlet end of the vegetable flow channel. The pre-cooling zone and the frost zone are connected by a plurality of low-temperature zones. A conveying mechanism is arranged at the bottom of the vegetable flow channel. A transport rack for vegetable planting trays is arranged in the vegetable flow channel. The vegetables on the vegetable planting trays pass through the pre-cooling zone, the low-temperature zone and the frost zone to form frost-bitten vegetables.

[0005] Many green leafy vegetables such as pakchoi will become sweeter after experiencing low-temperature frost during their natural growth process, and their taste will be significantly improved, making them high-quality vegetables. Taking pakchoi as an example, although pakchoi likes coolness and has strong cold resistance, the suitable temperature for the growth period of pakchoi is 15-25°C. When the temperature is lower than 15°C, the pakchoi grow slowly and cannot meet the requirements of large-scale production of vegetables. At the same time, too low a temperature will have an adverse effect on the growth of pakchoi. Therefore, there are very few vegetables that have experienced natural low-temperature frost in the market, which cannot meet people's demand for high-quality vegetables. The present invention is provided with a vegetable flow channel inside the cabinet, and the vegetables pass through different temperature control areas in the flow channel in turn to achieve pre-cooling, low-temperature treatment and frost treatment. The vegetable flow channel is composed of a plurality of temperature control zones connected in sequence, including a pre-cooling zone, several low-temperature zones and a frost zone, and a movable insulation partition is provided between adjacent temperature control zones. The present invention is provided with a conveying mechanism at the bottom of the vegetable flow channel, and a transport frame for placing a vegetable planting tray in the vegetable flow channel. The vegetable planting tray of the present invention is a movable structure for planting vegetables. In an environment (or greenhouse) suitable for vegetable growth, the vegetables are first cultivated to a harvestable state, and then the vegetable planting tray planted with vegetables is sequentially transported to each temperature control zone. The vegetable planting tray stays in each temperature control zone for a certain period of time before being transported to the next zone. In this way, through precise temperature control and the cooperation of the conveying mechanism, the vegetables on the vegetable planting tray become frost-bitten vegetables after passing through the pre-cooling zone, the low temperature zone and the frost-bitten zone, that is, simulating the frost weather experienced by vegetables under natural conditions, thereby significantly improving the quality of vegetable products and meeting people's demand for high-quality vegetables.

[0006] Preferably, an insulation layer is provided between the cabinet wall and adjacent temperature control zones, and an inlet insulation door and an outlet insulation door are provided at the inlet end and the outlet end of the vegetable flow channel respectively.

[0007] Preferably, the transport rack comprises a rectangular base and a multi-layer rectangular shelf arranged on the base, and a placement area for vegetable planting trays is formed on the shelf.

[0008] Preferably, the vegetable planting tray is rectangular, and its size matches the size of the shelf, and the distance between the upper and lower shelves is not less than the total height of the vegetable planting tray.

[0009] Preferably, the vegetable flow channel is U-shaped, and the inlet end and the outlet end of the vegetable flow channel are located on the same side of the cabinet; ultraviolet lamps are provided on the cabinet walls on both sides of the pre-cooling zone and the first low-temperature zone connected thereto.

[0010] Preferably, the conveying mechanism includes two longitudinal conveyors and one transverse conveyor, and the longitudinal conveyors and the transverse conveyors each include two parallel conveyor belts. One end of the longitudinal conveyor is cross-connected with the transverse conveyor, and the conveyor belt of the longitudinal conveyor is provided with a recess corresponding to the conveyor belt of the transverse conveyor. The conveyor belt of the transverse conveyor is arranged in the recess, and the transverse conveyor is arranged on a lifting mechanism.

[0011] Preferably, a refrigeration device is provided on one side of the cabinet away from the inlet and outlet ends of the vegetable flow channel, and a cold air duct is provided on the top of the cabinet. The cold air duct is connected to the temperature control zones in the flow channel through cold air nozzles, and the cold air nozzles are connected to a control system.

[0012] Preferably, the insulation partition between adjacent temperature control zones on the vegetable flow channel is a sliding door structure, a slide rail is provided on the top of the cabinet, and the insulation partition is hung on the slide rail on the top of the cabinet.

[0013] A vegetable processing method of an energy-saving frost-damaged vegetable machine comprises the following steps: a. Turn on the refrigeration equipment of the energy-saving frost-bitten vegetable machine to cool down multiple temperature control zones in the vegetable flow channel; b. Place the vegetable planting tray on the shelf of the transport rack. When the temperature in the pre-cooling zone reaches the set temperature, send the transport rack into the pre-cooling zone; c. After the transport rack stays in the pre-cooling zone for a certain period of time, open the insulation partition between the pre-cooling zone and the lower low-temperature zone, and move the transport rack to the downstream low-temperature zone until the transport rack moves to the frost zone; d. After the transport rack stays in the frost-bitten area for a certain period of time, the artificial simulated frost treatment of the vegetables is completed, and the transport rack is moved out of the energy-saving frost-bitten vegetable machine.

[0014] Preferably, the temperature of the temperature control zone is distributed from high to low from the inlet end to the outlet end of the vegetable flow channel, the temperature of the pre-cooling zone is 12-15 degrees, and the temperature of the frost zone is minus 3 degrees to minus 5 degrees. The residence time of the transport rack in the pre-cooling zone and each low-temperature zone is the same and the temperature difference between adjacent temperature control zones is the same. The residence time of the transport rack in the frost zone is an integer multiple of the residence time of the transport rack in the pre-cooling zone. The total time of the transport rack in the energy-saving frost-bitten vegetable machine is 6-8 hours.

[0015] The beneficial effect of the present invention is that it effectively solves the problem that the vegetable production equipment in the prior art cannot meet people's production needs for high-quality vegetables such as frost-bitten vegetables. The energy-saving frost-bitten vegetable machine and the vegetable processing method of the present invention can simulate frost-bitten vegetables, significantly improve the quality of vegetable products, and meet people's needs for high-quality vegetables. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a cross-sectional structural schematic diagram of the energy-saving frost-bitten vegetable machine of the present invention.

[0017] Figure 2 The invention discloses a schematic cross-sectional structure diagram of an energy-saving frost-bitten vegetable machine.

[0018] Figure 3 It is a schematic cross-sectional view of the energy-saving frost-bitten vegetable machine of the present invention in an idle state.

[0019] Figure 4 It is a schematic cross-sectional structure diagram of the energy-saving frost-bitten vegetable machine of the present invention in an idle state.

[0020] Figure 5 It is a partial structural diagram of the transport rack on the longitudinal conveyor.

[0021] Figure 6 It is a partial structural diagram of the transport rack on the transverse conveyor.

[0022] Figure 7 It is a structural schematic diagram of the transport rack during the movement process in the energy-saving frost-beaten vegetable machine.

[0023] Figure 8 It is a structural schematic diagram of the transport rack during the movement process in the energy-saving frost-beaten vegetable machine.

[0024] Fig. 9 It is a structural schematic diagram of the transport rack during the movement process in the energy-saving frost-beaten vegetable machine.

[0025] In the figure: 1. Cabinet, 2. Insulation partition, 3. Pre-cooling zone, 4. Frost zone, 5. Low temperature zone, 6. Transport rack, 7. Vegetable planting tray, 8. Vegetables, 9. Insulation layer, 10. Inlet insulation door, 11. Outlet insulation door, 12. Base, 13. Shelf, 14. Ultraviolet lamp, 15. Longitudinal conveyor, 16. Horizontal conveyor, 17. Conveyor belt, 18. Notch, 19. Lifting mechanism, 20. Refrigeration equipment, 21. Cold air pipe, 21, 22. Cold air nozzle, 23. Partition groove. DETAILED DESCRIPTION

[0026] The specific implementation of the present invention is further described below through examples and in conjunction with the accompanying drawings.

[0027] Example In such Figure 1 Figure 2In the embodiment shown, an energy-saving frost-bitten vegetable machine includes a cabinet 1 and a control system. The cabinet 1 is provided with a vegetable flow channel, and the vegetable flow channel is composed of a plurality of temperature control zones connected in sequence. An insulation partition 2 is provided between adjacent temperature control zones. The temperature control zone includes a pre-cooling zone 3 located at the inlet end of the vegetable flow channel and a frost-bitten zone 4 located at the outlet end of the vegetable flow channel. The pre-cooling zone 3 and the frost-bitten zone 4 are connected by a plurality of low-temperature zones 5. A conveying mechanism is provided at the bottom of the vegetable flow channel. A transport rack 6 for a vegetable planting tray 7 is provided in the vegetable flow channel. Vegetables 8 on the vegetable planting tray 7 pass through the pre-cooling zone 3, the low-temperature zone 5 and the frost-bitten zone 4 to form frost-bitten vegetables. Green vegetables are an indispensable dish in people's daily diet. Taking the most common green vegetables as an example, green vegetables are rich in vitamins A, C, K and minerals such as calcium and iron. These nutrients are essential for maintaining normal body functions. The cellulose in green vegetables contributes to intestinal health. In addition, since green vegetables have low calories and high cellulose content, they can help people feel full without adding too many calories, which helps control weight. Many green leafy vegetables such as pakchoi will become sweeter after experiencing low-temperature frost during their natural growth process, and their taste will be significantly improved, making them high-quality vegetables. Although pakchoi likes coolness and has strong cold resistance, the suitable temperature for the growth period of pakchoi is 15-25°C. When the temperature is lower than 15°C, the pakchoi grow slowly and cannot meet the requirements of large-scale production of vegetables. At the same time, too low a temperature will have an adverse effect on the growth of pakchoi. Therefore, there are very few vegetables that have experienced natural low-temperature frost in the market, which cannot meet people's demand for high-quality vegetables. The present invention is provided with a vegetable flow channel inside the cabinet, and the vegetables pass through different temperature control areas in the flow channel in turn to achieve pre-cooling, low-temperature treatment and frost treatment. The vegetable flow channel is composed of a plurality of temperature control zones connected in sequence, including a pre-cooling zone, several low-temperature zones and a frost zone, and a movable insulation partition is provided between adjacent temperature control zones to keep the temperature of each temperature control zone stable and avoid mutual influence. The pre-cooling zone is located at the inlet end of the vegetable flow channel, and its function is to reduce the temperature of the vegetables entering the energy-saving frost-bitten vegetable machine, in preparation for further cooling treatment in the subsequent low-temperature zone and frost-bitten zone. The pre-cooling zone and the frost-bitten zone are connected by several low-temperature zones. There are two low-temperature zones in this embodiment. The main function of the low-temperature zone is to gradually reduce the temperature of the vegetables and create suitable temperature conditions for the negative temperature treatment in the frost-bitten zone. The frost-bitten zone is located at the outlet end of the vegetable flow channel. It is the last temperature control zone of the vegetable flow channel and is also a key step. The main function of the frost-bitten zone is to make the vegetables undergo a frost process in a low-temperature environment, so that the texture of the vegetables changes and forms a natural taste after frost, thereby producing frost-bitten vegetables with better taste and better quality.The present invention is provided with a conveying mechanism at the bottom of the vegetable flow channel, and a transport frame for placing a vegetable planting tray in the vegetable flow channel. The vegetable planting tray of the present invention is a movable structure for planting vegetables. In an environment suitable for vegetable growth (or greenhouse), the vegetables are first cultivated to a harvestable state, and then the vegetable planting tray planted with vegetables is sequentially transported to each temperature control zone. The vegetable planting tray stays in each temperature control zone for a certain period of time before being transported to the next zone. In this way, through precise temperature control and the cooperation of the conveying mechanism, the vegetables on the vegetable planting tray become frosted vegetables after passing through the pre-cooling zone, the low temperature zone and the frost zone, that is, the vegetables are frosted in a low temperature environment, which significantly improves the quality of vegetable products and meets people's demand for high-quality vegetables.

[0028] In a preferred embodiment, the wall of the cabinet 1 and the adjacent temperature control zones are provided with an insulation layer 9, and the inlet end and the outlet end of the vegetable flow channel are provided with an inlet insulation door 10 and an outlet insulation door 11 respectively. The insulation layer and the insulation door are provided to improve energy efficiency and maintain the accuracy of temperature control. The main function is to reduce the heat exchange inside and outside the cabinet and keep the temperature of each temperature control zone inside the cabinet stable. This can reduce energy waste caused by temperature fluctuations and improve the energy efficiency of the machine. The insulation layer is provided between the wall of the cabinet and the adjacent temperature control zones, which can effectively isolate the heat transfer between different temperature control zones, ensure that each temperature control zone can independently control the temperature, and avoid temperature cross-influence. The inlet insulation door and the outlet insulation door are used to form a seal at the inlet and outlet ends of the vegetable flow channel to prevent external air from entering or internal cold air from escaping, thereby maintaining the temperature in the flow channel stable. The insulation door is made of insulation material to ensure good thermal insulation performance. Sealing strips are provided around the insulation door to ensure that the door can fit tightly when closed to reduce heat loss. The insulation door is opened and closed manually to facilitate operators to load and unload the vegetable transport rack at the inlet and outlet of the vegetable flow channel. In this way, the energy-saving frost-bitten vegetable machine can reduce energy consumption while maintaining high working efficiency and producing high-quality frost-bitten vegetables, thus achieving energy saving and consumption reduction requirements.

[0029] In a preferred embodiment, the transport rack 6 includes a rectangular base 12 and a multi-layer rectangular shelf 13 arranged on the base 12, and a placement area for the vegetable planting tray 7 is formed on the shelf 13; the vegetable planting tray 7 is rectangular, and its size is adapted to the size of the shelf 13, and the distance between the upper and lower shelves 13 is not less than the total height of the vegetable planting tray 7. The design of the transport rack is a key component for carrying and conveying the vegetable planting tray in the energy-saving frost-beaten vegetable machine. The base of the transport rack is designed to be rectangular, which helps to stably support the multi-layer shelf and ensure the stability and load-bearing capacity of the entire transport rack. As the foundation of the entire transport rack, the base needs to be strong enough to bear the weight of the multi-layer shelf and the vegetable planting tray. The shelf is designed as a multi-layer rectangular structure, so that the number of vegetables can be maximized in the temperature control zone space with a rectangular cross-section, and the vegetable transportation efficiency can be improved. Each layer of the shelf is designed with a placement area for placing the vegetable planting tray, so that the vegetables can be evenly distributed on the transport rack so as to pass through the vegetable flow channel. The placement area formed on the shelf is adapted to the size and shape of the vegetable planting tray to ensure that the planting tray is stably placed during the transportation process without sliding or tipping. These placement areas allow the vegetable planting trays to remain fixed when passing through the pre-cooling zone, low temperature zone and frost zone, ensuring that the vegetables are evenly treated with low temperature. The multi-layer shelf design enables the transport rack to process more vegetables at the same time, improving the working efficiency of the machine. The distance between the upper and lower shelves is not less than the total height of the vegetable planting tray, which ensures that there is enough space between the vegetable planting trays on each shelf, and the number of shelf layers can be adjusted according to the actual conditions such as the height of the actual vegetables to meet the transportation needs of different vegetables. The total height of the vegetable planting tray here is the sum of the height to the vegetable planting tray and the height of the vegetables. The vegetables of the present invention are planted in the vegetable planting tray. In addition, maintaining an appropriate distance between the shelves helps air circulation, which is crucial to maintaining the temperature uniformity in the vegetable flow channel, especially in the pre-cooling zone and the frost zone. Good air circulation can ensure that the vegetables are evenly cooled. Ensuring that there is enough distance between the shelves can also prevent the vegetable planting trays from being squeezed during transportation, protect the vegetables from damage, and maintain the integrity and freshness of the vegetables. In this way, the transport rack provides an efficient and stable platform for the continuous frost treatment of vegetables through its structure and function, which helps to improve the operating efficiency and processing capacity of the entire frost vegetable machine.

[0030] exist Figure 2 In the preferred embodiment shown, the vegetable flow channel is U-shaped, and the inlet end and the outlet end of the vegetable flow channel are located on the same side of the cabinet 1; ultraviolet lamps 14 are provided on the cabinet walls on both sides of the pre-cooling zone 3 and the first low-temperature zone 5 connected thereto (see Figure 3). This embodiment includes a pre-cooling zone 3, two low-temperature zones 5 and a frost zone 4, wherein the cross-sectional size of the frost zone 4 is equivalent to the sum of the cross-sectional sizes of one pre-cooling zone and two low-temperature zones 5, the pre-cooling zone corresponds to accommodating one transport rack 6, the two low-temperature zones 5 correspond to accommodating two transport racks 6, and the frost zone 4 can accommodate three transport racks 6, so that the frost zone 4 is structurally symmetrical with one pre-cooling zone and two low-temperature zones 5, the two low-temperature zones 5 have different temperatures, and an insulation partition is provided in the middle; while the temperatures of the frost zones 4 are the same, and no insulation partition is provided between the three transport racks 6, and an insulation partition is provided between the second low-temperature zone 5 and the frost zone 4. The vegetable flow channel is U-shaped, which helps to improve space utilization efficiency and reduce the floor space of the cabinet. The U-shaped flow channel enables the inlet and outlet ends of the vegetable flow channel to be located on the same side of the cabinet. Such a layout facilitates operators to load and unload vegetable transport racks on the same side, which can improve work efficiency.

[0031] Ultraviolet lamps 14 are provided on the cabinet walls on both sides of the pre-cooling zone and the first low-temperature zone 5 connected thereto. The main function of the ultraviolet lamp is disinfection. It can effectively kill bacteria and viruses, reduce microbial contamination, and maintain the sanitation and safety of vegetables. Ultraviolet disinfection is a physical disinfection method, which has no secondary pollution and is environmentally friendly. The location of the ultraviolet lamp is chosen in the pre-cooling zone and the first low-temperature zone because these two areas are the initial stages for vegetables to enter the flow channel. At this time, disinfection can effectively reduce the risk of microbial contamination in the subsequent processing process. It should be noted that when the ultraviolet lamp is used, it should be ensured that no one is present, because ultraviolet rays are harmful to human skin and eyes. Therefore, the ultraviolet lamp of this embodiment is linked to the imported insulation door. When the imported insulation door is opened, the ultraviolet lamp is turned off to prevent damage to the operator. In summary, the design of the U-shaped vegetable flow channel and the setting of the ultraviolet lamp are both to improve the efficiency and safety of the frost-hit vegetable machine. The U-shaped flow channel optimizes the spatial layout, while the ultraviolet lamp provides an effective disinfection method to ensure the sanitation and safety of the vegetable processing process.

[0032] exist Figure 4 In the preferred embodiment shown, the conveying mechanism includes two longitudinal conveyors 15 and one transverse conveyor 16, wherein the longitudinal conveyors 15 and the transverse conveyors 16 each include two parallel conveyor belts 17, one end of the longitudinal conveyor 15 is cross-connected with the transverse conveyor 16, the conveyor belt 17 of the longitudinal conveyor 15 is provided with a notch 18 corresponding to the conveyor belt 17 of the transverse conveyor 16, the conveyor belt 17 of the transverse conveyor 16 is arranged in the notch 18, and the transverse conveyor 16 is arranged on a lifting mechanism 19 (see Figure 5 Figure 6). The longitudinal conveyor and the transverse conveyor of this embodiment are both chain conveyors, and the lifting mechanism is composed of four hydraulic cylinders arranged at the bottom of the cabinet. The conveying mechanism design is a key component for moving the transport rack in the energy-saving frost-bitten vegetable machine. The longitudinal conveyor includes two parallel conveyor belts, and the transport rack is placed on the conveyor belts, which are used to move the vegetable transport rack along the length direction of the U-shaped structure of the vegetable flow channel. The longitudinal conveyor is responsible for moving the transport rack from the inlet end of the flow channel to the turning end of the U-shaped structure, and then moving the transport rack from the turning end of the U-shaped structure to the outlet end of the flow channel; and the transverse conveyor also includes two parallel conveyor belts, and its conveying direction is perpendicular to the longitudinal conveyor, which is used to move the transport rack from the inlet side of the flow channel to the outlet side at the turning end of the U-shaped structure, that is, from one side of the U-shaped structure to the other side, and finally the transport rack passes through the pre-cooling zone, the low temperature zone and the frost zone in sequence.

[0033] One end of the longitudinal conveyor is cross-connected with the transverse conveyor, which allows the transport rack to switch from longitudinal to transverse during movement. The cross-connection allows the vegetable planting trays to smoothly transition between different temperature control zones while maintaining the continuity and accuracy of transportation. The conveyor belt of the longitudinal conveyor is provided with notches corresponding to the positions of the conveyor belt of the transverse conveyor, and the conveyor belt of the transverse conveyor is set in these notches. The notches ensure the cross-docking between the longitudinal conveyor and the transverse conveyor, so that the transport rack can smoothly change the direction of movement. The transverse conveyor is set on a lifting mechanism, which means that the height of the transverse conveyor can be adjusted according to the movement needs of the transport rack, so that the transport rack can be placed on the conveyor belt of the longitudinal conveyor or the transverse conveyor. The lifting mechanism can lift or lower the transverse conveyor to determine that the transport rack is on the conveyor belt of the longitudinal conveyor or the transverse conveyor, so that the transport rack completes the direction change. Usually the transverse conveyor is in a low position (see Figure 5 ), the transport rack moves on the conveyor belt of the longitudinal conveyor on the inlet side of the vegetable flow channel from the inlet end of the vegetable flow channel to the first turning position of the U-shaped structure; then the transverse conveyor is raised by the lifting mechanism (see Figure 6), at this time, the conveyor belt of the transverse conveyor is higher than the conveyor belt of the longitudinal conveyor, and the transport frame on the conveyor belt of the longitudinal conveyor is transferred from the conveyor belt of the longitudinal conveyor to the conveyor belt of the transverse conveyor. The transverse conveyor works, driving the transport frame to move from the first turning position of the U-shaped structure to the second turning position, and then the transverse conveyor is lowered by the lifting mechanism. At this time, the conveyor belt of the transverse conveyor is lower than the conveyor belt of the longitudinal conveyor. The transport frame on the conveyor belt of the transverse conveyor is transferred from the conveyor belt of the transverse conveyor to the conveyor belt of the longitudinal conveyor on the outlet side of the vegetable flow channel. The longitudinal conveyor on this side works, driving the transport frame to move from the second turning position of the U-shaped structure to the outlet end of the vegetable flow channel. The longitudinal conveyor of this embodiment adopts a three-section structure, that is, on the inlet side of the vegetable flow channel, a section is set at the bottom of the pre-cooling zone and the two low-temperature zones, and a section located at the bottom of the second low-temperature zone is set with a notch corresponding to the position of the conveyor belt of the transverse conveyor. On the outlet side of the vegetable flow channel, the three-section structure is set at the bottom of the frost zone, and the notch is located in the upstream section of the frost zone, and the two longitudinal conveyors are symmetrically arranged.

[0034] In the above embodiment, a refrigeration device 20 is provided on the side of the cabinet 1 away from the inlet and outlet of the vegetable flow channel, and a cold air pipe 21 is provided on the top of the cabinet 1. The cold air pipe 21 is connected to the temperature control zone in the flow channel through the cold air nozzle 22, and the cold air nozzle 22 is connected to the control system. The refrigeration device 20 is arranged on the side of the cabinet away from the inlet and outlet of the vegetable flow channel. Such a layout helps to centrally manage and maintain the refrigeration equipment, while reducing the direct interference of the refrigeration equipment on the vegetable flow channel, ensuring the accuracy of temperature control in the flow channel. The refrigeration equipment 20 of this embodiment is two sets, one set is used for the frost zone, and the other set is used for the low temperature zone and the pre-cooling zone. Cold air pipes are provided on the top of the cabinet, which are responsible for transporting the cold air generated by the refrigeration equipment to each temperature control zone in the vegetable flow channel. The need for cold air pipes takes into account the layout requirements of the pipes to ensure the stability and reliability of the pipe system. The cold air pipes are connected to the temperature control zone in the flow channel through the cold air nozzles. The cold air enters each temperature control zone directly through the cold air nozzle, realizing the precise control of the temperature of each temperature control zone in the flow channel. The setting of the cold air nozzle needs to match the temperature control zone to ensure the uniform distribution of the cold air and improve the cooling efficiency. The cold air nozzle is connected to the control system, which means that the opening and closing of the nozzle and the flow rate of the cold air can be automatically adjusted according to the temperature of the temperature control zone. The control system automatically adjusts the supply of cold air according to the actual temperature feedback of the temperature control zone to maintain a stable temperature in the temperature control zone and ensure the quality of the vegetables during the frosting process. In this way, through the precise temperature control and the cooperation of the conveying mechanism, the continuous frosting treatment of vegetables is realized, which improves efficiency and saves energy. At the same time, the design of the cold air pipe and nozzle ensures the effective distribution of cold air, while the integration of the control system improves the automation and precision of the entire frosting process.

[0035] In the above embodiment, the insulation partition 2 between adjacent temperature control zones on the vegetable flow channel is a sliding door structure, a slide rail is provided on the top of the cabinet 1, and the insulation partition 2 is suspended on the slide rail on the top of the cabinet 1, and a corresponding partition groove 23 is provided on the side wall of the cabinet 1. The insulation partition of the sliding door structure can move horizontally on the slide rail on the top of the cabinet, which ensures the flexibility of the movement of the insulation partition. The insulation partition of the present invention is used to separate temperature control zones of different temperatures, but when the transport rack moves in the vegetable flow channel, the insulation partition is removed to facilitate the free movement of the transport rack in the vegetable flow channel. Since a conveying mechanism is provided at the bottom of the flow channel, the present invention sets the suspension, guidance and drive of the insulation partition at the top of the cabinet to avoid the insulation partition from affecting the conveying mechanism.

[0036] The insulation partition is hung on the slide rail on the top of the cabinet. The slide rail on the top of the cabinet needs to have sufficient load-bearing capacity and stability to ensure the stability and safety of the insulation partition during movement. At the same time, the slide rail material needs to have good durability to withstand long-term use and possible environmental influences, such as temperature changes and humidity. The insulation partition with a sliding door structure can be opened or closed quickly, which is convenient for the transport rack to quickly change positions in the vegetable flow channel and improve work efficiency; at the same time, it reduces heat exchange between temperature control zones and improves energy efficiency. The side wall of the cabinet is provided with a partition groove that is compatible with the insulation partition, so that the insulation partition can more effectively isolate the temperature between adjacent temperature control zones, reduce the circulation or leakage of cold air during cold treatment of vegetables, and improve the energy efficiency of the entire frost-bitten vegetable machine.

[0037] The vegetable processing method of the energy-saving frost-bitten vegetable machine, taking green vegetables as an example, comprises the following steps: a. Turn on the refrigeration equipment of the energy-saving frost-bitten vegetable machine to cool down the multiple temperature control zones in the vegetable flow channel; this step is the pre-cooling procedure of the energy-saving frost-bitten vegetable machine before work, at least to make the temperature of the pre-cooling zone reach the set value, and the temperature of other temperature control zones is not required, because the vegetables need to stay in the pre-cooling zone for a period of time, at this time, cooling down other temperature control zones can meet the requirements.

[0038] b. Place the vegetable planting trays on the shelf of the transport rack. When the temperature of the pre-cooling zone reaches the set temperature, send the transport rack into the pre-cooling zone. When the temperature of the pre-cooling zone reaches the set temperature, open the inlet insulation door and place the transport rack loaded with the vegetable planting trays into the pre-cooling zone (see Figure 7 ), and close the entrance insulation door. The vegetable planting trays here are planted with green vegetables, and the green vegetables have grown to the harvest period.

[0039] c. After the transport rack has stayed in the pre-cooling zone for a certain period of time, open the insulation partition between the pre-cooling zone and the lower low-temperature zone, and move the transport rack to the downstream low-temperature zone (see Figure 8 Fig. 9), until the transport rack moves to the frost zone; a pre-cooling zone and two low-temperature zones are arranged in the cabinet of this embodiment, the transport rack moves to the first low-temperature zone after staying in the pre-cooling zone for a certain time, moves to the second low-temperature zone after staying in the first low-temperature zone for a certain time, and moves to the frost zone after staying in the second low-temperature zone for a certain time.

[0040] d. After the transport rack stays in the frost zone for a certain period of time, the artificial simulated frost treatment of the vegetables is completed, and the transport rack is moved out of the energy-saving frost-damaged vegetable machine. The length of the vegetable flow channel in the frost zone of the present invention is the same as the length of the vegetable flow channel in the pre-cooling zone and the first low-temperature zone and the second low-temperature zone. The vegetables stay in the frost zone for a long time, so there is enough time to frost the vegetables and ensure the quality of the vegetables. This method simulates the natural frost environment by accurately controlling the temperature and the transportation process to improve the quality and shelf life of the vegetables.

[0041] In the above embodiment, the temperature of the temperature control zone of the present invention is distributed from high to low from the inlet end of the vegetable flow channel to the outlet end of the vegetable flow channel, the temperature of the pre-cooling zone is 12-15 degrees, the temperature of the frost zone is minus 3 degrees to minus 5 degrees, the residence time of the transport rack in the pre-cooling zone and each low temperature zone is the same, the residence time of the transport rack in the frost zone is an integer multiple of the residence time of the transport rack in the pre-cooling zone, and the total time of the transport rack in the energy-saving frost vegetable machine is 6-8 hours. The control temperature of the pre-cooling zone of this embodiment is 15 degrees, and the residence time is 60 minutes; the control temperature of the first low temperature zone is 10 degrees, and the residence time is 60 minutes; the control temperature of the second low temperature zone is 5 degrees, and the residence time is 60 minutes; the control temperature of the frost zone is minus 5 degrees, and the residence time is 180 minutes, and the total time of the transport rack in the energy-saving frost vegetable machine is 6 hours. The temperature condition of frost refers to the phenomenon that the temperature drops below 0°C, causing the water vapor in the near air to directly condense and sublimate on the ground or the surface of the object to form ice crystals. In this process, the sudden drop in temperature is the key factor in the formation of frost. Specifically, when the surface temperature of an object is below 0°C and the water vapor in the air reaches saturation, the excess water vapor will condense into ice crystals on the surface of the object. The vegetables of the present invention drop sharply from 5 degrees in the second low temperature zone to minus 5 degrees in the frost zone, which meets the key conditions for the formation of frost. Frost forms on the surface of the vegetables in this area, which increases their sweetness and improves their taste. The residence time of the transport rack in the frost zone is an integer multiple of the residence time of the transport rack in the pre-cooling zone in order to facilitate streamlined flow operation.

[0042] The present invention uses a vegetable flow channel to process vegetables. During normal production and circulation operation (in the vicinity of Figure 2(in the state of being in ... The insulation partition, the longitudinal conveyor at the bottom of the inlet side of the vegetable flow channel starts to work, the transport rack located in the first low temperature zone is moved to the second low temperature zone, the transport rack located in the pre-cooling zone is moved to the first low temperature zone, and then the insulation partition between the first low temperature zone and the second low temperature zone and the insulation partition between the pre-cooling zone and the first low temperature zone are closed, the inlet insulation door is opened, the vegetable transport rack to be processed is placed in the pre-cooling zone, and the vegetable frosting operation is performed after the inlet insulation door is closed. This embodiment takes 60 minutes as a processing cycle, that is, a transport rack is taken out from the outlet insulation door every hour, and then a transport rack is put in from the inlet insulation door. The total time that the transport rack stays in the energy-saving frost-beating vegetable machine is about 6 hours.

[0043] In addition to the above-mentioned embodiments, within the scope disclosed in the claims and the specification of the present invention, the technical features or technical data of the present invention can be reselected and combined to form new implementation modes. These implementation modes that are not described in detail in the present invention can be easily implemented by those skilled in the art without creative work. Therefore, these implementation modes that are not described in detail should also be regarded as specific embodiments of the present invention and are within the protection scope of the present invention.

Claims

1. An energy-saving frost-bitten vegetable machine, comprising a cabinet and a control system, characterized in that: A vegetable flow channel is provided in the cabinet, and the vegetable flow channel is composed of multiple temperature control zones connected in sequence. An insulation partition is provided between adjacent temperature control zones. The temperature control zone includes a pre-cooling zone located at the inlet end of the vegetable flow channel and a frost zone located at the outlet end of the vegetable flow channel. The pre-cooling zone and the frost zone are connected by a plurality of low-temperature zones. A conveying mechanism is provided at the bottom of the vegetable flow channel, and a transport rack for vegetable planting trays is provided in the vegetable flow channel. The vegetables on the vegetable planting trays pass through the pre-cooling zone, the low-temperature zone and the frost zone to form frosted vegetables.

2. The energy-saving frost-bitten vegetable machine according to claim 1, characterized in that: A heat-insulating layer is provided between the cabinet wall and adjacent temperature-controlled zones, and an inlet heat-insulating door and an outlet heat-insulating door are provided at the inlet end and the outlet end of the vegetable flow channel, respectively.

3. The energy-saving frost-bitten vegetable machine according to claim 1, characterized in that: The transport rack comprises a rectangular base and a multi-layer rectangular shelf arranged on the base, and a placement area for vegetable planting trays is formed on the shelf.

4. The energy-saving frost-bitten vegetable machine according to claim 3, characterized in that: The vegetable planting tray is rectangular, and its size is matched with the size of the shelf. The distance between the upper and lower shelves is not less than the total height of the vegetable planting tray.

5. The energy-saving frost-bitten vegetable machine according to claim 1, characterized in that: The vegetable flow channel is U-shaped, and the inlet end and the outlet end of the vegetable flow channel are located on the same side of the cabinet; ultraviolet lamps are provided on the cabinet walls on both sides of the pre-cooling zone and the first low-temperature zone connected thereto.

6. The energy-saving frost-bitten vegetable machine according to claim 5, characterized in that: The conveying mechanism includes two longitudinal conveyors and one transverse conveyor. The longitudinal conveyors and the transverse conveyors each include two parallel conveyor belts. One end of the longitudinal conveyor is cross-connected with the transverse conveyor. The conveyor belt of the longitudinal conveyor is provided with a recess corresponding to the conveyor belt of the transverse conveyor. The conveyor belt of the transverse conveyor is arranged in the recess. The transverse conveyor is arranged on a lifting mechanism.

7. The energy-saving frost-bitten vegetable machine according to claim 5, characterized in that: A refrigeration device is provided on one side of the cabinet away from the inlet and outlet ends of the vegetable flow channel, and a cold air duct is provided on the top of the cabinet. The cold air duct is connected to the temperature control zones in the flow channel through cold air nozzles, and the cold air nozzles are connected to a control system.

8. The energy-saving frost-bitten vegetable machine according to any one of claims 1 to 7, characterized in that: The insulation partition between adjacent temperature control zones on the vegetable flow channel is a sliding door structure, a slide rail is provided on the top of the cabinet, the insulation partition is hung on the slide rail on the top of the cabinet, and a corresponding partition groove is provided on the cabinet wall.

9. A vegetable processing method using an energy-saving frost-bitten vegetable machine according to claim 1, characterized in that The following steps are involved: a. Turn on the refrigeration equipment of the energy-saving frost-bitten vegetable machine to cool down multiple temperature control zones in the vegetable flow channel; b. Place the vegetable planting tray on the shelf of the transport rack. When the temperature in the pre-cooling zone reaches the set temperature, send the transport rack into the pre-cooling zone; c. After the transport rack stays in the pre-cooling zone for a certain period of time, open the insulation partition between the pre-cooling zone and the lower low-temperature zone, and move the transport rack to the downstream low-temperature zone until the transport rack moves to the frost zone; d. After the transport rack stays in the frost-bitten area for a certain period of time, the artificial simulated frost treatment of the vegetables is completed, and the transport rack is moved out of the energy-saving frost-bitten vegetable machine.

10. The vegetable processing method of the energy-saving frost-bitten vegetable machine according to claim 9, characterized in that: The temperature of the temperature control zone is distributed from high to low from the inlet end to the outlet end of the vegetable flow channel. The temperature of the pre-cooling zone is 12-15 degrees, and the temperature of the frost zone is minus 3 degrees to minus 5 degrees. The residence time of the transport rack in the pre-cooling zone and each low-temperature zone is the same. The residence time of the transport rack in the frost zone is an integer multiple of the residence time of the transport rack in the pre-cooling zone. The total time of the transport rack in the energy-saving frost-bitten vegetable machine is 6-8 hours.

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