Precooling device for preservation of picked fruits and vegetables

Abstract

The utility model relates to the technical field of fruit and vegetable precooling, and discloses a precooling device for preserving picked fruits and vegetables, which comprises a containing box, a box cover is rotatably connected onto the containing box, a water tank is mounted on the right side of the containing box, and a thermoelectric semiconductor chilling plate is mounted on the right side of the water tank. A thermoelectric semiconductor chilling plate is arranged in the containing box, a cold conduction piece is installed on the refrigerating face of the thermoelectric semiconductor chilling plate and extends into the water tank, an air inlet hole is formed in the top of the water tank, a communicating and ventilating opening is formed in the rear portion of the water tank, a heat dissipation assembly is arranged on the heat dissipation face of the thermoelectric semiconductor chilling plate, and a ventilating shell is fixedly installed on the rear portion of the containing box. The ventilation shell is provided with an adaptation opening and a release opening. According to the fruit and vegetable pre-cooling device, through the arrangement of the built-in box body, the water tank and the containing box, picked fruits and vegetables can be directly pre-cooled through circulation of cold air, the time that the fruits and the vegetables cannot be pre-cooled in the transportation process is shortened, the storage duration of the fruits and the vegetables is prolonged, the taste of the fruits and the vegetables is improved, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of fruit and vegetable pre-cooling, in particular to a pre-cooling device for preserving fruits and vegetables after picking. Background Art

[0002] Pre-cooling refers to the process of rapidly cooling food from its initial temperature (around 30°C) to the desired final temperature (0-15°C). This includes cooling prior to refrigerated transportation and high-temperature refrigeration, as well as rapid cooling prior to quick freezing. To extend the shelf life of fruits and vegetables, reduce dryness and other losses during distribution, and ensure consumers receive fresh, clean fruits and vegetables, a series of post-harvest processing steps must be performed in the factory, including sorting, removing stems, roots, skins, and leaves, cleaning, pre-cooling, filtering, and packaging. Therefore, pre-cooling is essential.

[0003] In the existing technology, fruits and vegetables are usually pre-cooled by placing them in a pre-cooling warehouse and using the warehouse's refrigeration equipment to pre-cool the fruit trees. However, when picking, the fruits and vegetables are usually placed directly in a holding frame, which has no pre-cooling effect and cannot well preserve the freshly picked fruits and vegetables, making it inconvenient to use. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the existing technology and propose a pre-cooling device for preserving fruits and vegetables after picking. By providing a built-in box, a water tank, and a storage box, the circulation of cold air can be used to directly pre-cool the picked fruits and vegetables, thereby shortening the time during which fruits and vegetables cannot be pre-cooled during transportation, improving the storage time and taste of fruits and vegetables, and being easy to use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a pre-cooling device for keeping fruits and vegetables fresh after picking, comprising a holding box, a box cover rotatably connected to the holding box, a water tank installed on the right side of the holding box, a thermoelectric semiconductor refrigeration plate installed on the right side of the water tank, a cooling guide plate installed on the cooling surface of the thermoelectric semiconductor refrigeration plate, the cooling guide plate extending into the water tank, an air inlet hole provided on the top of the water tank, a connecting vent provided at the rear of the water tank, a heat dissipation component provided at the heat dissipation surface of the thermoelectric semiconductor refrigeration plate, a ventilation shell fixedly installed at the rear of the holding box, an adapter port and a release port provided on the ventilation shell, an intake fan installed in the release port, a built-in box body installed in the holding box, ventilation channels evenly provided on the built-in box body, the airflow generated by the intake fan can pass through the ventilation channels, the built-in box body is connected to the water tank, and cooling water is provided in the water tank. By setting up built-in boxes, water tanks, and storage boxes, the circulation of cold air can be used to pre-cool the picked fruits and vegetables directly, shortening the time when fruits and vegetables cannot be pre-cooled during transportation, improving the storage time and taste of fruits and vegetables, and making it easy to use.

[0006] Furthermore, a through hole is provided on the top of the cooling fin.

[0007] Furthermore, the heat dissipation assembly includes a mounting frame fixedly mounted on the outside of the water tank, and a heat dissipation fan is mounted on the mounting frame.

[0008] Furthermore, there are four cooling fans, and two fans form a group.

[0009] Furthermore, the adapting port and the connecting vent are correspondingly communicated with each other.

[0010] Furthermore, the box cover and the storage box are buckled together.

[0011] Furthermore, the storage box and the box cover are both made of foam material.

[0012] Furthermore, the ventilation channel is in the form of a long strip, and batteries are installed at the bottom of the storage box.

[0013] The utility model has the following beneficial effects:

[0014] The utility model provides a pre-cooling device for preserving fruits and vegetables after picking. The device can directly pre-cool the picked fruits and vegetables by utilizing the circulation of cold air through the provided built-in box, water tank and storage box, thereby shortening the time when fruits and vegetables cannot be pre-cooled during transportation, improving the storage time and taste of fruits and vegetables, and being easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a structural diagram of the water tank part of the utility model;

[0017] Figure 3 This is a schematic structural diagram of the ventilation shell portion of the present invention;

[0018] Figure 4 This is a structural diagram of the built-in box of the utility model.

[0019] Legend:

[0020] 1. Storage box; 101. Box cover; 2. Water tank; 201. Air inlet; 202. Thermoelectric semiconductor cooling plate; 203. Mounting frame; 204. Cooling fan; 205. Ventilation channel; 206. Built-in box; 207. Connecting vent; 208. Through hole; 209. Cooling plate; 3. Air intake fan; 4. Ventilation shell; 401. Adapter port; 402. Release port. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Reference Figure 1-Figure 4 The present invention provides an embodiment of a pre-cooling device for preserving fruits and vegetables after picking, comprising a holding box 1, a battery installed at the bottom of the holding box 1, a box cover 101 rotatably connected to the holding box 1, the box cover 101 and the holding box 1 are buckled together, the holding box 1 and the box cover 101 are made of foam material, the foam material has good thermal insulation performance, a water tank 2 is installed on the right side of the holding box 1, a thermoelectric semiconductor refrigeration chip 202 is installed on the right side of the water tank 2, and the thermoelectric semiconductor refrigeration chip 202 is A cooling fin 209 is installed on the cooling surface. A through hole 208 is provided on the top of the cooling fin 209. The cooling fin 209 extends into the water tank 2. An air inlet 201 is provided on the top of the water tank 2. A connecting vent 207 is provided at the rear of the water tank 2. A heat dissipation assembly is provided on the heat dissipation surface of the thermoelectric semiconductor cooling fin 202. The heat dissipation assembly includes a mounting bracket 203 fixedly mounted on the outside of the water tank 2. A cooling fan 204 is mounted on the mounting bracket 203. There are four cooling fans 204, and two fans form a group.

[0023] refer to Figure 1 、 Figure 2 After the thermoelectric semiconductor refrigeration piece 202 is powered on, it provides a cooling effect on the cooling surface. The thermoelectric semiconductor refrigeration piece 202 is a prior art that uses the Peltier effect to achieve the cooling effect. In the Peltier effect, when electrons flow from the low-energy P-type material to the high-energy N-type material, they need to absorb heat to form a cold surface; on the contrary, when electrons flow from the high-energy N-type material to the low-energy P-type material, they release heat to form a hot surface. The cooling surface can cool the water inside the water tank 2, so that the temperature of the cooling water is 5-15°C. The temperature detection can be detected and controlled by a temperature sensor, and the temperature of the cooling plate 209 is reduced at the same time, which can increase the The contact area with the cooling water improves the cooling effect, and can also cool the air flow entering the air inlet 201. The cold air enters the adapter port 401 from the connecting vent 207, and then enters the ventilation shell 4. Finally, the cold air is released from the release port 402. The air intake fan 3 is powered on to blow the cold air flow into the storage box 1. When the cold air passes through the ventilation channel 205, the built-in box 206 containing cooling water can further cool the cold air, thereby realizing the pre-cooling function. The heat dissipation fan 204 can dissipate heat from the hot surface of the thermoelectric semiconductor refrigeration plate 202 to ensure that the thermoelectric semiconductor refrigeration plate 202 can perform normal cooling work.

[0024] A ventilation shell 4 is fixedly installed on the rear part of the storage box 1. The ventilation shell 4 is provided with an adapter port 401 and a release port 402. The adapter port 401 is connected to the ventilation port 207 correspondingly. An intake fan 3 is installed in the release port 402. A built-in box body 206 is installed in the storage box 1. The built-in box body 206 can directly pre-cool the storage box 1. Ventilation channels 205 are evenly provided on the built-in box body 206. The airflow generated by the intake fan 3 can pass through the ventilation channels 205. The ventilation channels 205 are long strips. The built-in box body 206 is connected to the water tank 2. Cooling water is provided in the water tank 2.

[0025] By providing the built-in box 206, the water tank 2 and the storage box 1, the picked fruits and vegetables can be directly pre-cooled by utilizing the circulation of cold air, thereby shortening the time during which the fruits and vegetables cannot be pre-cooled during transportation, improving the storage time and taste of the fruits and vegetables, and being easy to use.

[0026] Working principle: Under the power supply of the battery, after the thermoelectric semiconductor refrigeration sheet 202 is powered on, it provides a cooling effect on the cooling surface. The thermoelectric semiconductor refrigeration sheet 202 is an existing technology, which uses the Peltier effect to achieve the cooling effect. In the Peltier effect, when electrons flow from the low-energy P-type material to the high-energy N-type material, they need to absorb heat to form a cold surface; on the contrary, when electrons flow from the high-energy N-type material to the low-energy P-type material, they release heat to form a hot surface. The cooling surface can cool the water inside the water tank 2 to keep the temperature of the cooling water at 5-15°C. The temperature detection can be detected and controlled by a temperature sensor, and the temperature of the cooling sheet 209 is also detected. Lowering can increase the contact area with cooling water, improve the cooling effect, and can also cool the air flow entering the air inlet 201. The cold air enters the adapter port 401 from the connecting vent 207, and then enters the ventilation shell 4. Finally, the cold air is released from the release port 402. The air intake fan 3 is powered on to blow the cold air flow into the storage box 1. When the cold air passes through the ventilation channel 205, the built-in box 206 containing cooling water can further cool the cold air, thereby realizing the pre-cooling function. The heat dissipation fan 204 can dissipate heat on the hot surface of the thermoelectric semiconductor refrigeration plate 202 to ensure that the thermoelectric semiconductor refrigeration plate 202 can perform normal cooling work.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pre-cooling device for preserving fruits and vegetables after picking, comprising a storage box (1), characterized in that: The storage box (1) is rotatably connected to a box cover (101), a water tank (2) is installed on the right side of the storage box (1), a thermoelectric semiconductor refrigeration plate (202) is installed on the right side of the water tank (2), a cooling plate (209) is installed on the cooling surface of the thermoelectric semiconductor refrigeration plate (202), and the cooling plate (209) extends into the water tank (2), an air inlet (201) is provided on the top of the water tank (2), a connecting air vent (207) is provided at the rear of the water tank (2), and a heat dissipation component is provided on the heat dissipation surface of the thermoelectric semiconductor refrigeration plate (202). A ventilation shell (4) is fixedly installed at the rear of the storage box (1), and an adapter port (401) and a release port (402) are provided on the ventilation shell (4). An air intake fan (3) is installed in the release port (402). A built-in box (206) is installed in the storage box (1), and ventilation channels (205) are evenly provided on the built-in box (206). The airflow generated by the air intake fan (3) can pass through the ventilation channels (205). The built-in box (206) is communicated with the water tank (2), and cooling water is provided in the water tank (2).

2. A pre-cooling device for preserving fruits and vegetables after picking according to claim 1, characterized in that: A through hole (208) is provided on the top of the cooling fin (209).

3. The pre-cooling device for preserving fruits and vegetables after picking according to claim 1, characterized in that: The heat dissipation assembly comprises a mounting frame (203) fixedly mounted on the outside of the water tank (2), and a heat dissipation fan (204) is mounted on the mounting frame (203).

4. The pre-cooling device for preserving fruits and vegetables after picking according to claim 3, characterized in that: There are four cooling fans (204), and two fans form a group.

5. The pre-cooling device for preserving fruits and vegetables after picking according to claim 1, characterized in that: The adapting port (401) and the connecting vent (207) are correspondingly communicated with each other.

6. The pre-cooling device for preserving fruits and vegetables after picking according to claim 1, characterized in that: The box cover (101) and the storage box (1) are buckled together.

7. The pre-cooling device for preserving fruits and vegetables after picking according to claim 1, characterized in that: The storage box (1) and the box cover (101) are both made of foam material.

8. The pre-cooling device for preserving fruits and vegetables after picking according to claim 1, characterized in that: The ventilation channel (205) is in the shape of an elongated strip, and a battery is installed at the bottom of the storage box (1).

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