Frostbite-preventing vacuum precooler for fruits and vegetables

Abstract

The utility model discloses a fruit and vegetable frostbite prevention vacuum pre-cooler which comprises a pre-cooler body, a sealing door and a hinge, the hinge is connected to the outer side of the pre-cooler body in an embedded mode, the sealing door is connected to the other side of the hinge in an embedded mode, a sealing groove is formed in the outer side of the pre-cooler body, and a sealing strip is connected to the inner portion of the sealing door in an embedded mode. By arranging a sealing groove and a sealing strip, after the sealing door is reset to the surface of the precooler body, the sealing door can enhance the sealing performance between the sealing door and the precooler body through the sealing strip and the sealing groove, the sealing strip can push air in the sealing groove to the inner side of an exhaust pipe, and then the air is exhausted to the outside through a one-way valve; when the sealing door deforms, the sealing strip can still be connected with the sealing groove through the rubber characteristic of the sealing strip and the characteristic that the sealing strip is adsorbed by the sealing groove, and the situation of insufficient air tightness is avoided.

Description

Technical Field

[0001] This utility model relates to the field of vacuum precooling machine technology, and in particular to a vacuum precooling machine for preventing fruit and vegetable frost damage. Background Technology

[0002] A vacuum precooling machine for preventing frost damage to fruits and vegetables is a device used to rapidly cool fruits and vegetables to prevent frost damage and extend their shelf life. In a vacuum environment, the boiling point of water decreases, and the water on the surface of the fruits and vegetables evaporates rapidly. During the evaporation process, the water absorbs the heat from the fruits and vegetables themselves, thus rapidly cooling them down. Due to the rapid cooling speed, the temperature of fruits and vegetables can be reduced to a suitable storage temperature in a short time, effectively reducing the possibility of frost damage. The doors of existing vacuum precooling machines for preventing frost damage to fruits and vegetables are usually closed by mechanical locks, and there is a lack of a corresponding sealing structure between the door and the precooling machine. After the equipment has been used for a long time, mechanical deformation may occur between the door and the precooling machine, and the gap between the door and the precooling machine will increase, which will affect the overall sealing of the device during subsequent use.

[0003] The purpose of this utility model is to provide a vacuum precooling machine for preventing frost damage to fruits and vegetables, so as to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of the existing technology mentioned in the background section by proposing a vacuum precooling machine for preventing frost damage to fruits and vegetables.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A vacuum precooling machine for preventing frost damage to fruits and vegetables includes a precooling machine body, a sealing door, and a hinge. The hinge is fitted and connected to the outer side of the precooling machine body, and the sealing door is fitted and connected to the other side of the hinge. A sealing groove is opened on the outer side of the precooling machine body, and a sealing strip is fitted and connected to the inner side of the sealing door.

[0007] Preferably, an exhaust pipe is provided on the inner side of the precooling machine body, one end of the exhaust pipe is connected to the sealing groove, and the other end of the exhaust pipe passes through the precooling machine body and is located on the surface of the precooling machine body.

[0008] Preferably, a one-way valve is fitted inside the opening at one end of the exhaust pipe that passes through the main body of the precooler, and a knob is fitted outside the one-way valve.

[0009] Preferably, a one-way valve slot is provided on the inner side of the precooler body, located outside the exhaust pipe port, and the one-way valve slot is threaded inside.

[0010] Preferably, an electromagnetic lock is fitted and connected to the outer side of the precooling machine body, and a lock block is fixedly connected to the outer side of the sealing door.

[0011] Preferably, a sealing hinge is fitted onto the inner side of the sealing door near the hinge, and the other end of the sealing hinge is fixedly connected to the inside of the precooling machine body near the hinge.

[0012] Preferably, the sealing hinge on the inner side of the sealed door is an accordion-style stretchable sealing strip.

[0013] Preferably, the sealing strip is made entirely of rubber, and the surface of the sealing strip is provided with continuous airtight grooves.

[0014] Preferably, one-way valves are fitted and connected to both the upper and lower ends of the precooling machine body, and a support frame is fixedly connected to the bottom of the precooling machine body.

[0015] Preferably, the inlet end of the one-way valve is located near the exhaust pipe, and the outlet end of the one-way valve is located on the outside of the precooler body.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. In this utility model, by setting a sealing groove and a sealing strip, the sealing door is reset to the surface of the precooling machine body after the sealing door is closed. During this process, the sealing strip will be inserted into the inside of the sealing groove, thereby enhancing the sealing between the sealing door and the precooling machine body through the sealing strip and the sealing groove.

[0018] 2. By setting up a one-way valve and an exhaust pipe, when the sealing strip is embedded inside the sealing groove, the sealing strip can push the air inside the sealing groove to the inside of the exhaust pipe, and then discharge it to the outside through the one-way valve. This makes the air pressure inside the sealing groove lower than the outside air pressure, so that the sealing groove can act as an adsorbent for the sealing strip, making the connection between the sealing groove and the sealing strip tighter, and further enhancing the sealing performance between the sealing door and the precooling machine body. Even if the sealing door is deformed, the sealing strip can still connect with the sealing groove through its own rubber properties and the adsorbent properties of the sealing groove, avoiding insufficient air tightness. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the vacuum precooling machine for preventing frost damage to fruits and vegetables proposed in this utility model;

[0020] Figure 2 This is a schematic diagram of the sealing door and the main structure of the precooler;

[0021] Figure 3 This is a schematic diagram of a partial cross-sectional structure of the device;

[0022] Figure 4 for Figure 3 A magnified structural diagram at point A in the diagram.

[0023] In the diagram: 1. Precooler body; 2. Sealed door; 3. Hinge; 4. Electromagnetic lock; 5. Sealing groove; 6. One-way valve; 7. Sealing strip; 8. Exhaust pipe; 9. Knob; 10. One-way valve slot. Detailed Implementation

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Example

[0029] Reference Figure 1-4A vacuum precooling machine for preventing frost damage to fruits and vegetables includes a precooling machine body 1, a sealing door 2, and a hinge 3. The sealing door 2 is located on one side of the vacuum chamber of the precooling machine body 1, and a vacuum mechanism and a refrigeration mechanism are provided on the other side of the vacuum chamber. The vacuum chamber is fitted with equally spaced shelves. When the operator uses this device, the operator can lay the fruits and vegetables in a single layer on the shelf surface to avoid stacking and ensure uniform surface moisture. The vacuum pump quickly reduces the pressure from atmospheric pressure to 5-10 kPa, and the surface moisture of the fruits and vegetables begins to evaporate. Then, the control system synchronously starts the refrigeration system to condense water vapor for precooling the fruits and vegetables. After the precooling reaches the target temperature, the vacuum mechanism is turned off, and filtered clean air is slowly returned to atmospheric pressure to avoid sudden pressure rise that could damage the cells, thus completing the precooling process of the fruits and vegetables.

[0030] A hinge 3 is fitted to the outer side of the precooling machine body 1, and a sealing door 2 is fitted to the other side of the hinge 3. A sealing groove 5 is opened on the outer side of the precooling machine body 1, and a sealing strip 7 is fitted to the inner side of the sealing door 2. With this design, after the fruits and vegetables are placed on the shelf surface in the vacuum chamber, the staff can reset the sealing door 2 to the surface of the precooling machine body 1. During this process, the sealing strip 7 will be inserted into the inner side of the sealing groove 5. The sealing strip 7 and the sealing groove 5 enhance the sealing between the sealing door 2 and the precooling machine body 1.

[0031] An exhaust pipe 8 is provided on the inner side of the precooling machine body 1. One end of the exhaust pipe 8 is connected to the sealing groove 5, and the other end of the exhaust pipe 8 passes through the precooling machine body 1 and is located on the surface of the precooling machine body 1. A one-way valve 6 is fitted inside the opening of the end of the exhaust pipe 8 that passes through the precooling machine body 1, and a knob 9 is fitted outside the one-way valve 6. With this design, when the sealing strip 7 is embedded in the sealing groove 5, the sealing strip 7 can push the air inside the sealing groove 5 to the inside of the exhaust pipe 8, and then discharge it to the outside through the one-way valve 6. This makes the air pressure inside the sealing groove 5 lower than the outside air pressure, so that the sealing groove 5 plays the role of adsorbing the sealing strip 7, making the connection between the sealing groove 5 and the sealing strip 7 tighter, and further enhancing the sealing performance between the sealing door 2 and the precooling machine body 1.

[0032] The inner side of the precooling machine body 1 is provided with a one-way valve slot 10 located outside the exhaust pipe 8 port. The one-way valve slot 10 is threaded inside, and the bottom of the one-way valve 6 is provided with a hollow threaded rod. After the precooling operation is completed, when the operator needs to open the sealing door 2, the operator can disconnect the one-way valve 6 from the precooling machine body 1 by rotating the knob 9. During this process, the operator can initially rotate the knob 9 to allow air to enter the exhaust pipe 8 and the sealing groove 5 through the connection between the one-way valve 6 and the one-way valve slot 10. When the air pressure inside the exhaust pipe 8 and the sealing groove 5 returns to normal pressure or approaches normal pressure, the suction force of the sealing groove 5 on the sealing strip 7 decreases, thus allowing the operator to open the sealing door 2 more easily.

[0033] An electromagnetic lock 4 is fitted and connected to the outside of the precooling machine body 1, and a locking block is fixedly connected to the outside of the sealing door 2. With this design, after the sealing door 2 is reset to the surface of the precooling machine body 1, the operator can activate the electromagnetic lock 4 through the external controller, so that the electromagnetic lock 4 is energized and attracts the locking block to fix the sealing door 2 to the surface of the precooling machine body 1.

[0034] A sealing hinge is fitted to the inner side of the sealing door 2 near the hinge 3, and the other end of the sealing hinge is fixedly connected to the side of the precooling machine body 1 near the hinge 3. The sealing hinge on the inner side of the sealing door 2 is an accordion-style stretchable sealing strip. Through this design, the sealing hinge can stretch and retract with the opening and closing angle of the hinge 3 during the opening and closing of the sealing door 2, thereby sealing the connection between the sealing door 2 and the precooling machine body 1.

[0035] The sealing strip 7 is made of rubber, and the surface of the sealing strip 7 has a continuous airtight groove. With this design, when the sealing strip 7 is embedded in the sealing groove 5, the protruding parts on both sides of the groove of the sealing strip 7 will first contact the inside of the sealing groove 5 to form an initial sealing line. The hollow structure inside the groove of the sealing strip 7 generates an elastic reaction force during compression, which concentrates the pressure on the inside of the sealing groove 5, thereby enabling the sealing groove 5 and the sealing strip 7 to form a higher contact stress.

[0036] One-way valves 6 are fitted and connected to both the upper and lower ends of the precooling machine body 1, and a support frame is fixedly connected to the bottom of the precooling machine body 1. With this design, when the operator needs to rotate the one-way valve 6 at the bottom of the precooling machine body 1 to release air, the support frame at the bottom of the precooling machine body 1 can keep the one-way valve 6 at the bottom of the precooling machine body 1 at a certain distance from the ground, providing the operator with operating space.

[0037] The air inlet of the one-way valve 6 is on the side close to the exhaust pipe 8, and the air outlet of the one-way valve 6 is on the outside of the precooler body 1. With this design, when the one-way valve 6 is in a state of tight connection with the precooler body 1, the air inside the sealing groove 5 can be discharged to the outside through the one-way valve 6. At the same time, the one-way valve 6 can prevent outside air from entering the interior of the sealing groove 5.

[0038] Working principle: When using this device, workers can lay fruits and vegetables in a single layer on the shelf surface to avoid stacking and ensure uniform surface moisture. After placing the fruits and vegetables on the shelf surface inside the vacuum chamber, workers can reset the sealing door 2 to the surface of the pre-cooling machine body 1. During this process, the sealing strip 7 will be inserted into the inside of the sealing groove 5. The sealing strip 7 and the sealing groove 5 enhance the sealing between the sealing door 2 and the pre-cooling machine body 1. Then, workers can start the vacuum pump through the external controller to quickly reduce the pressure from atmospheric pressure to 5-10 kPa. The surface moisture of the fruits and vegetables begins to evaporate. Subsequently, the control system simultaneously starts the refrigeration system to condense water vapor for pre-cooling the fruits and vegetables. After the pre-cooling reaches the target temperature, the vacuum mechanism is turned off, and filtered clean air is slowly refilled to atmospheric pressure to avoid sudden pressure rise that could damage the cells, thus completing the pre-cooling process of the fruits and vegetables.

[0039] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

[0040] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

Claims

1. A vacuum precooling machine for preventing frost damage to fruits and vegetables, comprising a precooling machine body (1), a sealing door (2), and a hinge (3), characterized in that, The outer side of the precooling machine body (1) is fitted with a hinge (3), and the other side of the hinge (3) is fitted with a sealing door (2). A sealing groove (5) is opened on the outer side of the precooling machine body (1), and a sealing strip (7) is fitted inside the sealing door (2).

2. The fruit and vegetable anti-freezing vacuum pre-cooling machine according to claim 1, characterized in that, The inner side of the precooling machine body (1) is provided with an exhaust pipe (8), one end of the exhaust pipe (8) is connected to the sealing groove (5), and the other end of the exhaust pipe (8) passes through the precooling machine body (1) and is located on the surface of the precooling machine body (1).

3. The fruit and vegetable anti-freezing vacuum pre-cooling machine according to claim 2, characterized in that, The exhaust pipe (8) has a one-way valve (6) fitted inside the opening at one end of the precooler body (1), and a knob (9) is fitted outside the one-way valve (6).

4. The fruit and vegetable anti-freezing vacuum pre-cooling machine according to claim 1, characterized in that, The inner side of the precooler body (1) is provided with a one-way valve slot (10) located outside the exhaust pipe (8) port, and the one-way valve slot (10) is provided with threads inside.

5. The fruit and vegetable anti-freezing vacuum pre-cooling machine according to claim 1, characterized in that, An electromagnetic lock (4) is fitted and connected to the outside of the precooling machine body (1), and a lock block is fixedly connected to the outside of the sealing door (2).

6. The fruit and vegetable anti-freezing vacuum pre-cooling machine according to claim 1, characterized in that, The sealing door (2) has a sealing hinge fitted to one end of the inner side near the hinge (3), and the other end of the sealing hinge is fixedly connected to the side of the precooler body (1) near the hinge (3).

7. The vacuum precooling machine for preventing frost damage to fruits and vegetables according to claim 1, characterized in that, The sealing hinge on the inside of the sealed door (2) is an accordion-style stretchable sealing strip.

8. The fruit and vegetable anti-freezing vacuum pre-cooling machine according to claim 1, characterized in that, The sealing strip (7) is made of rubber and has a continuous airtight groove on its surface.

9. The fruit and vegetable anti-freezing vacuum pre-cooling machine according to claim 1, characterized in that, One-way valves (6) are fitted and connected to both the upper and lower ends of the precooling machine body (1), and a support frame is fixedly connected to the bottom of the precooling machine body (1).

10. The fruit and vegetable anti-freezing vacuum pre-cooling machine according to claim 3, characterized in that, The inlet end of the one-way valve (6) is close to the exhaust pipe (8), and the outlet end of the one-way valve (6) is on the outside of the precooler body (1).

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