Quick freezer with internal and external air pressure balancing function

Abstract

The application discloses a quick freezer with internal and external air pressure balance function, which comprises a box body, a spiral tower and a fan are arranged in the box body, the air outlet direction of the fan is towards the spiral tower and blows to a conveying belt, the conveying belt is through both ends of the box body and is communicated with the outside, and is used for conveying food to be frozen; an air pressure balance base is installed on the top of the box body above the spiral tower, an inclined guide rail is arranged on the air pressure balance base in the air flow direction, a sliding block is slidably installed on the inclined guide rail, and an air outlet is arranged on the air pressure balance base and is communicated with the outside; when the air pressure in the box body is increased, the air flow pushes the sliding block to move upwards along the inclined guide rail and increases the opening degree of the air outlet; and when the air pressure is decreased, the sliding block slides downwards due to gravity and blocks the air outlet. The quick freezer can automatically adjust the opening degree of the air outlet, maintains the air pressure balance between the inside and the outside of the box body, avoids the risk of deformation of the box body caused by air pressure difference, and prolongs the service life of the equipment.

Description

Technical Field

[0001] This utility model particularly relates to a quick-freezing machine with internal and external air pressure balancing function. Background Technology

[0002] During operation, traditional quick-freezing machines are prone to developing pressure differences between the inside and outside of the chamber due to forced airflow from the fan and rapid cooling by the refrigeration system, leading to various problems. Continuous positive pressure may cause the welds of the chamber to crack, while negative pressure may cause the door seal to close too tightly, affecting its service life; localized high-pressure and low-pressure areas can cause airflow turbulence, resulting in uneven freezing of food, with temperature differences reaching ±5℃.

[0003] Existing solutions have significant drawbacks. Electric pressure relief valves rely on sensors and circuits, resulting in a high failure rate in low-temperature environments, with electronic component failure rates reaching 23% at -30°C. Mechanical dampers require manual adjustment and cannot respond to pressure changes in real time. Passive pressure relief vents are directly connected to the outside environment, leading to significant loss of cold air.

[0004] Inside a quick-freezing machine, the airflow from the fan impacts the spiral tower, creating a series of complex phenomena. Part of the airflow is guided downwards by the spiral blades, generating a reaction force that pushes it upwards. Simultaneously, the rotation of the airflow generates centrifugal force, "throwing" air towards the top. This complex airflow further exacerbates the uneven pressure distribution within the chamber, making the aforementioned problems more pronounced and severely impacting the performance and operating efficiency of the quick-freezing machine. Therefore, there is an urgent need for a new type of quick-freezing machine that can effectively solve these problems to improve its operational stability and quick-freezing effect. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a quick-freezing machine with internal and external air pressure balancing function.

[0006] To solve the aforementioned technical problems, this utility model adopts the following technical solution:

[0007] A quick-freezing machine with internal and external air pressure balancing function includes:

[0008] The enclosure contains a spiral tower and a fan. The fan blows air towards the spiral tower and onto the conveyor belt.

[0009] The conveyor belt runs through both ends of the container and connects to the outside, used to transport food to be frozen;

[0010] The air pressure balance base is installed on the top of the box directly above the spiral tower.

[0011] An inclined guide rail is obliquely set on a pressure balance base along the airflow direction;

[0012] The slider is slidably mounted on the inclined guide rail;

[0013] The air outlet is located on the air pressure balance base and is connected to the outside.

[0014] When the air pressure inside the chamber increases, the airflow pushes the slider to move upward along the inclined guide rail, increasing the opening of the air outlet; when the air pressure decreases, the slider slides down due to gravity, blocking the air outlet.

[0015] Preferably, the slider has a counterweight cavity inside, and the counterweight cavity contains a number of magnetic counterweight particles that can be increased or decreased.

[0016] Preferably, the magnetic counterweight particles are made of ferrite permanent magnet material.

[0017] Preferably, the air outlet is equipped with a one-way valve structure, and the one-way valve structure is equipped with an elastic silicone valve, which is normally closed; when the air pressure inside the box is higher than the outside, the airflow opens the elastic silicone valve to release pressure; when the air pressure inside the box is normal or low, the elastic silicone valve closes.

[0018] Preferably, the inclined guide rail surface is provided with a self-lubricating coating.

[0019] Preferably, the self-lubricating coating is made of polytetrafluoroethylene composite material.

[0020] Preferably, the housing is provided with at least one vertical mounting plate, and multiple fans are evenly distributed on the vertical mounting plate along the vertical direction.

[0021] The beneficial effects of this utility model are:

[0022] This invention effectively solves many problems caused by air pressure differences during the operation of traditional quick-freezing machines through a unique air pressure balance structure. During normal operation, the air pressure balance base and inclined guide rail, in conjunction with the slider, automatically adjust the air outlet opening to maintain air pressure balance inside and outside the chamber, avoiding the risk of chamber deformation due to air pressure differences and extending the equipment's service life. When the air pressure inside the chamber increases, the slider moves upward to increase the air outlet opening, promoting airflow and reducing cold air leakage, thus lowering energy consumption. Conversely, when the air pressure decreases, the slider slides down to block the air outlet, preventing cold air leakage. Simultaneously, the one-way valve structure and elastic silicone flap effectively block the entry of external hot air, maintaining temperature uniformity inside the chamber and improving the quick-freezing effect. Furthermore, the self-lubricating coating on the inclined guide rail surface reduces the slider's friction coefficient even in low-temperature environments, preventing jamming caused by low-temperature icing and ensuring stable equipment operation. The magnetic counterweights inside the slider can be flexibly added or removed according to actual working conditions, further enhancing the equipment's adaptability and flexibility. Overall, this invention not only improves the operating efficiency and stability of the quick-freezing machine, but also significantly reduces energy consumption and enhances the quick-freezing effect, demonstrating significant practical value and broad application prospects. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This is a schematic diagram of the structure of a quick-freezing machine with internal and external air pressure balancing function according to this application. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the structure of a quick-freezing machine with internal and external air pressure balancing function according to this application. Figure 2 ;

[0026] Figure 3 This is a schematic diagram of the movement of the slider on the inclined guide rail in this application. Figure 1 ;

[0027] Figure 4 This is a schematic diagram of the movement of the slider on the inclined guide rail in this application. Figure 2 . Detailed Implementation

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0029] The orientation shown in the accompanying drawings should not be construed as limiting the specific protection scope of this utility model, but is only for reference and understanding of preferred embodiments. The product components shown in the drawings can be changed in position, increased in number, or simplified in structure.

[0030] The “connection” in the specification and the “connection” relationship between the components shown in the drawings can be understood as a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or a connection through an intermediate medium. Those skilled in the art can understand the connection relationship according to the specific circumstances and derive different implementation methods such as screwing, riveting, welding, snap-fitting, or embedding to suitably replace it.

[0031] The directional terms such as up, down, left, right, top, and bottom in the instruction manual and the directions shown in the attached drawings indicate that each component can directly contact or contact each other through other features; for example, "up" can mean directly above or diagonally above, or it simply means above other objects; other directions can be understood by analogy.

[0032] The materials used to manufacture solid-shaped parts as shown in the specification and drawings may be metallic, non-metallic, or other synthetic materials. The machining processes used for solid-shaped parts may include stamping, forging, casting, wire cutting, laser cutting, injection molding, CNC milling, 3D printing, machining, etc. Those skilled in the art may adapt or combine the above materials and manufacturing processes according to different processing conditions, costs, and precision requirements.

[0033] The working principle of this utility model is as follows:

[0034] like Figures 1 to 4 As shown, a quick-freezing machine with internal and external air pressure balancing function includes a housing 1, inside which is a spiral tower 2 and a fan 3. The air outlet of the fan 3 is directed towards the spiral tower 2 and blows towards the conveyor belt 4. The conveyor belt 4 passes through both ends of the housing 1 and is connected to the outside, used to transport food to be frozen. An air pressure balancing base 20 is installed on the top of the housing directly above the spiral tower 2. An inclined guide rail 5 is obliquely set on the air pressure balancing base 20 along the airflow direction. A slider 6 is slidably installed on the guide rail 5. An air outlet 7 is located on the air pressure balancing base 20 and is connected to the outside. When the air pressure inside the housing increases, the airflow pushes the slider 6 to move upward along the guide rail 5, increasing the opening of the air outlet 7. When the air pressure decreases, the slider 6 slides down due to gravity, blocking the air outlet 7.

[0035] The slider 6 has a counterweight cavity inside, containing several adjustable magnetic counterweight particles 9. This allows for flexible adjustment of the slider's weight according to actual working conditions, adapting to different air pressure balance requirements. The magnetic counterweight particles 9 are made of ferrite permanent magnet material, possessing excellent magnetism and stability.

[0036] The air outlet has seven one-way valves, each equipped with a flexible silicone valve 13, which is normally closed. When the internal air pressure is higher than the external pressure, the airflow opens the flexible silicone valve 13 to release pressure. When the internal air pressure is normal or low, the flexible silicone valve 13 closes to prevent cold air leakage. The flexible silicone valve 13 is made of food-grade silicone, with a temperature resistance range of -60℃ to 200℃. It effectively reduces cold air loss and prevents hot air from entering, maintaining temperature uniformity inside the chamber.

[0037] The inclined guide rail 5 has a self-lubricating coating on its surface. The self-lubricating coating is made of polytetrafluoroethylene composite material and has a measured friction coefficient μ < 0.04. It can still effectively reduce the friction coefficient of the slider in an environment of -40℃, solve the jamming problem caused by low temperature icing, and ensure the stable operation of the equipment in a low temperature environment.

[0038] The cabinet 1 is equipped with at least one vertical mounting plate 19, and multiple fans 3 are evenly distributed along the vertical direction on the vertical mounting plate 19, which optimizes the airflow distribution and further improves the quick-freezing efficiency and temperature uniformity.

[0039] Normal operating status

[0040] During normal operation of the quick-freezing machine, fan 3 continuously blows cold air into the spiral tower 2. After passing through the spiral tower 2, some of the airflow is guided downwards by the spiral blades, creating a reaction force that pushes it upwards. Simultaneously, the rotation of the airflow generates centrifugal force, "throwing" the air to the top. At this time, the air pressure inside the chamber remains relatively stable, slider 6 blocks the air outlet 7, and the elastic silicone valve 13 is closed to prevent cold air leakage. Figure 3 As shown.

[0041] Increased air pressure inside the box

[0042] During the operation of the quick-freezing machine, the air pressure inside the chamber may rise due to the forced airflow from fan 3 and the rapid cooling of the refrigeration system. At this time, the airflow will push slider 6 upwards along the inclined guide rail 5. The upward movement of slider 6 will increase the opening of the air outlet 7, allowing the high-pressure airflow inside the chamber to be discharged through the air outlet 7, thereby reducing the air pressure inside the chamber; Figure 4 As shown, simultaneously, the elastic silicone valve 13 in the one-way valve structure is pushed open under the action of high-pressure airflow, further promoting the discharge of airflow until the air pressure inside the chamber returns to normal. Figure 2 The arrows in the diagram illustrate the direction of airflow.

[0043] This invention effectively solves many problems caused by air pressure differences during the operation of traditional quick-freezing machines through a unique air pressure balance structure. During normal operation, the air pressure balance base 20 and the inclined guide rail, in conjunction with the slider, automatically adjust the air outlet opening to maintain air pressure balance inside and outside the chamber, avoiding the risk of chamber deformation due to air pressure differences and extending the equipment's service life. When the air pressure inside the chamber increases, the slider moves upward to increase the air outlet opening, promoting airflow and reducing cold air leakage, thus lowering energy consumption. Conversely, when the air pressure decreases, the slider slides down to block the air outlet, preventing cold air leakage. Simultaneously, the one-way valve structure and the elastic silicone flap effectively block the entry of external hot air, maintaining temperature uniformity inside the chamber and improving the quick-freezing effect. Furthermore, the self-lubricating coating on the inclined guide rail surface reduces the slider's friction coefficient even in low-temperature environments, preventing jamming caused by low-temperature icing and ensuring stable equipment operation. The magnetic counterweights inside the slider can be flexibly added or removed according to actual working conditions, further enhancing the equipment's adaptability and flexibility. Overall, this invention not only improves the operating efficiency and stability of the quick-freezing machine, but also significantly reduces energy consumption and enhances the quick-freezing effect, demonstrating significant practical value and broad application prospects.

[0044] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the present invention without departing from the principles and spirit of the invention as defined by the claims. Therefore, the detailed description of the embodiments in this disclosure is for illustrative purposes only, and the scope of protection is defined by the content of the claims.

Claims

1. A quick-freezing machine with internal and external air pressure balancing function, characterized in that, include: The box (1) is equipped with a spiral tower (2) and a fan (3) inside. The fan (3) blows air outward toward the spiral tower (2) and toward the conveyor belt (4). The conveyor belt (4) runs through both ends of the box (1) and connects to the outside, and is used to transport food to be frozen; The air pressure balance base (20) is installed on the top of the box directly above the spiral tower (2). An inclined guide rail (5) is obliquely set on the pressure balance base (20) along the airflow direction; The slider (6) is slidably mounted on the inclined guide rail (5); The air outlet (7) is located on the air pressure balance base (20) and connected to the outside; When the air pressure inside the box (1) increases, the airflow pushes the slider (6) to move up along the inclined guide rail (5) to increase the opening of the air outlet (7); when the air pressure decreases, the slider (6) slides down due to gravity and blocks the air outlet (7).

2. A quick-freezing machine with internal and external air pressure balancing function according to claim 1, characterized in that, The slider (6) has a counterweight cavity inside, and several magnetic counterweight particles (9) that can be added or removed are placed inside the counterweight cavity.

3. A quick-freezing machine with internal and external air pressure balancing function according to claim 2, characterized in that, The magnetic counterweight particles (9) are made of ferrite permanent magnet material.

4. A quick-freezing machine with internal and external air pressure balancing function according to claim 2, characterized in that, A one-way valve structure is provided at the air outlet (7), and an elastic silicone valve (13) is provided on the one-way valve structure, which is closed under normal conditions; when the air pressure inside the box (1) is higher than the outside, the airflow pushes open the elastic silicone valve (13) to release pressure; when the air pressure inside the box (1) is normal or low, the elastic silicone valve (13) closes.

5. A quick-freezing machine with internal and external air pressure balancing function according to claim 2, characterized in that, The inclined guide rail (5) has a self-lubricating coating on its surface.

6. A quick-freezing machine with internal and external air pressure balancing function according to claim 5, characterized in that, The self-lubricating coating is made of polytetrafluoroethylene composite material.

7. A quick-freezing machine with internal and external air pressure balancing function according to claim 2, characterized in that, The housing (1) has at least one vertical mounting plate (19) inside, and multiple fans (3) are distributed at equal intervals along the vertical direction on the vertical mounting plate (19).

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