Tunnel type food freezing equipment capable of realizing frequency conversion and speed regulation

Abstract

The utility model discloses tunnel type food freezing equipment capable of realizing frequency conversion and speed regulation, which belongs to the technical field of food freezing and comprises a tunnel cold box, two lower baffles are connected to the inner wall of the lower half part of the tunnel cold box; the cold-resistant conveyor with the frequency conversion and speed regulation functions is used for conveying and supporting food, and supporting legs of the cold-resistant conveyor are fixedly connected with the two lower baffles; the two upper baffles are rotationally connected with the inner top wall of the tunnel cold box, two first winches, two second winches and two third winches are installed at the top end of the tunnel cold box, and steel wire ropes of the two first winches penetrate through the tunnel cold box to be fixedly connected with the upper baffles correspondingly; steel wire ropes of the two second winches penetrate through the tunnel cold box and are connected with electromagnets, the two upper baffles are made of iron materials attracted to the electromagnets, and balancing weights are detachably connected to the side faces of the electromagnets. According to the tunnel type food freezing equipment capable of achieving frequency conversion and speed regulation, multiple adjustments can be conducted, and the freezing effect is improved.

Description

Technical Field

[0001] This utility model belongs to the field of food freezing technology, and in particular to a tunnel-type food freezing device that realizes variable frequency speed regulation. Background Technology

[0002] Refrigeration equipment is a device that combines a refrigeration unit with facilities that utilize cold energy. Currently, food can be frozen by placing it in cold storage, and some foods require quick-freezing. During freezing and movement, cold storage containers cannot be adjusted to accommodate foods of different sizes, nor can they reduce the size of the clearance for airflow between the food and the outside environment.

[0003] A search revealed a Chinese patent document (authorization announcement number CN221549052U) for a tunnel-type food freezing equipment with variable frequency speed control. The equipment includes a tunnel body with a control cabinet, installed between a front drive and a rear drive. The front and rear drives are driven by a variable frequency speed-controlled stainless steel mesh belt. The tunnel body has a top plate and a bottom plate. A first and a second air cooler are installed on the top plate. A side plate connects the top and bottom plates. The top plate has a through hole for mounting an air duct. The top of the air duct is connected to the second air cooler, and the bottom of the air duct is connected to a diffuser cone. The diffuser cone is fixedly installed on a support frame. A first and a second support column are installed between the support frame and the bottom plate. The first support column is connected to an upper mesh belt bracket, and the second support column is connected to a lower mesh belt bracket. This invention enables variable frequency speed control of the conveyor belt, allowing for continuous adjustment of food freezing time as needed, making it convenient and reliable. Food can be placed in cold storage when it is frozen. Some foods need to be quick-frozen. During freezing and moving, cold boxes cannot be adjusted to accommodate foods of different sizes, nor can they reduce the size of the gap for air circulation with the outside. Utility Model Content

[0004] The purpose of this invention is to provide a tunnel-type food freezing device that achieves variable frequency speed regulation, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tunnel-type food freezing device for achieving variable frequency speed regulation, comprising:

[0006] The tunnel cold box has two lower baffles connected to the inner wall of the lower half.

[0007] A cold-resistant conveyor with variable frequency speed control is used for conveying and supporting food. The support legs of the cold-resistant conveyor are connected and fixed to two lower baffles.

[0008] Two upper baffles are rotatably connected to the inner top wall of the tunnel cold box. Two first winches, two second winches, and two third winches are installed at the top of the tunnel cold box. The steel wire ropes of the two first winches pass through the tunnel cold box and are respectively connected and fixed to the upper baffles. The steel wire ropes of the two second winches pass through the tunnel cold box and are connected to electromagnets. The material of the two upper baffles is set to iron material that attracts the electromagnets. The side of the electromagnet is detachably connected to a counterweight.

[0009] Multiple fans are installed at the top of the tunnel cold box. The fans are connected to the tunnel cold box through ventilation pipes with solenoid valves. The inner top wall of the tunnel cold box is equipped with refrigeration equipment for freezing food.

[0010] As a preferred embodiment, the two symmetrically arranged vertical inner walls of the tunnel cold box are rotatably connected to air-gathering plates, and the steel wire ropes of the two third winches pass through the tunnel cold box and are connected and fixed to the air-gathering plates.

[0011] As a preferred embodiment, the wind-concentrating plate has a hollow structure, and the inner cavity of the wind-concentrating plate is provided with a movable plate.

[0012] As a preferred embodiment, an electric push rod is installed on the inclined surface of the wind-gathering plate, and a connecting block is connected to the moving part of the electric push rod. The connecting block is connected and fixed to the movable plate.

[0013] As a preferred embodiment, the inner wall of the tunnel cold box is equipped with a temperature sensor for temperature measurement.

[0014] As a preferred embodiment, the inner wall of the tunnel cold box is bonded with an insulation layer.

[0015] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0016] This tunnel-type food freezing equipment with variable frequency speed regulation controls the first winch to wind up and unwind the line when conveying food of different sizes, changing the tilt angle of the upper baffle. This reduces the gap between the middle of the tunnel cold box and the outside while keeping the food as close to it as possible. If the food is not affected by the upper baffle, the first winch is controlled to unwind the line, allowing the end of the upper baffle to fall onto the refrigerated conveyor by gravity. If the counterweight is insufficient, the second winch is controlled to unwind the line and activate the electromagnet. The electromagnet attracts the side of the upper baffle, ensuring its stability and reducing the impact of the blower.

[0017] This tunnel-type food freezing equipment, which achieves variable frequency speed regulation, uses a third winch to take up and unwind the lines, changes the tilt angle of the air-gathering plate, and controls the extension and retraction of the electric push rod to bring the movable plate as close to the food as possible for targeted air blowing and freezing, thereby improving the freezing effect.

[0018] This tunnel-type food freezing equipment, which features variable frequency speed control, can perform multiple adjustments to improve freezing efficiency. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the tunnel cold box and the refrigeration-resistant conveyor of this utility model;

[0022] Figure 3 This is a cross-sectional view of the tunnel cold box and the two third winches of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] In the picture:

[0025] 1. Tunnel cold box; 2. Lower baffle; 3. Refrigerated conveyor; 4. Upper baffle; 5. First winch; 6. Second winch; 7. Third winch; 8. Electromagnet; 9. Counterweight; 10. Fan; 11. Ventilation pipe; 12. Refrigeration equipment; 13. Air concentrator; 14. Movable plate; 15. Electric push rod; 16. Connecting block; 17. Temperature sensor. Detailed Implementation

[0026] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0027] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0028] The connection method can adopt existing methods such as bonding, welding, bolting, etc., depending on the actual needs. Techniques, methods and equipment known to those skilled in the art may not be discussed in detail. However, where appropriate, the techniques, methods and equipment should be regarded as part of the specification. The proportions of the components in the drawings are for reference only and can be adjusted to a certain extent according to the actual use.

[0029] Please see Figures 1 to 3 As shown, a tunnel-type food freezing device for achieving variable frequency speed control is provided in this embodiment, which includes:

[0030] Tunnel cold box 1, the inner wall of the lower half of tunnel cold box 1 is connected to two lower baffles 2;

[0031] The refrigerated conveyor 3 with variable frequency speed regulation function is used to transport and support food. The support legs of the refrigerated conveyor 3 are connected and fixed to the two lower baffles 2.

[0032] Two upper baffles 4 are rotatably connected to the inner top wall of the tunnel cold box 1. Two first winches 5, two second winches 6, and two third winches 7 are installed at the top of the tunnel cold box 1. The steel wire ropes of the two first winches 5 pass through the tunnel cold box 1 and are respectively connected and fixed to the upper baffles 4. According to the size of the food, the first winches 5 are pre-controlled to reel in and unwind the line, change the tilt angle of the upper baffles 4, and reduce the gap between the middle of the tunnel cold box 1 and the outside while keeping it as close to the food as possible.

[0033] The steel wire ropes of the two second winches 6 pass through the tunnel cold box 1 and are connected to electromagnets 8. The two upper baffles 4 are made of iron material that attracts the electromagnets 8. The side of the electromagnets 8 is detachably connected to a counterweight 9. If the food is not affected by the upper baffles 4, for example, if it is in a protective box, the quality of the food will not be affected when it passes through the upper baffles 4. The first winch 5 is controlled to release the wire so that the end of the upper baffles 4 falls onto the cold-resistant conveyor 3 by gravity. If the counterweight is insufficient, the second winch 6 is controlled to release the wire and the electromagnets 8 are activated. The electromagnets 8 attract the side of the upper baffles 4 to ensure the stability of the upper baffles 4 and reduce the impact of the blower 10.

[0034] Multiple fans 10 are installed at the top of the tunnel cold box 1. The fans 10 are connected to the tunnel cold box 1 through the ventilation pipe 11 with a solenoid valve. The inner top wall of the tunnel cold box 1 is equipped with a refrigeration device 12 for freezing food. The refrigeration device 12 includes a refrigeration section, a connecting section and a heat dissipation section. The heat dissipation section is located outside the tunnel cold box 1 and is as far away from the tunnel cold box 1 as possible. The food to be frozen is placed on the refrigeration conveyor 3. The fans 10 and the refrigeration device 12 are turned on. The refrigeration device 12 cools the air. The fans 10 blow air gently to improve the temperature uniformity. The refrigeration conveyor 3 transports the food. The refrigeration conveyor 3 is adjusted in speed and stopped as needed for freezing.

[0035] To concentrate airflow and improve freezing efficiency, two symmetrically arranged vertical inner walls of the tunnel cold box 1 are rotatably connected to concentrating air plates 13. The steel wire ropes of the two third winches 7 pass through the tunnel cold box 1 and are fixed to the concentrating air plates 13. The concentrating air plates 13 have a hollow structure, and the inner cavity of the concentrating air plates 13 is provided with a movable plate 14. An electric push rod 15 is installed on the inclined surface of the concentrating air plates 13. The moving part of the electric push rod 15 is connected to a connecting block 16, which is fixed to the movable plate 14. According to the size of the food, the winding and unwinding of the third winches 7 is pre-controlled to change the tilt angle of the concentrating air plates 13 and control the extension and retraction of the electric push rod 15 so that the movable plate 14 is as close as possible to the food for targeted blowing and freezing, thereby improving the freezing effect.

[0036] A temperature sensor 17 for temperature measurement is installed on the inner wall of the tunnel cold box 1. The temperature sensor 17 includes a display part, a connection part and a measuring part. The measuring part is located inside the tunnel cold box 1 and the display part is located on the outside. An insulation layer is adhered to the inner wall of the tunnel cold box 1.

[0037] The refrigerated conveyor 3, the first winch 5, the second winch 6, the third winch 7, the electromagnet 8, the fan 10, the refrigeration equipment 12, the electric push rod 15, and the temperature sensor 17 are all conventional instruments. Their working principles, dimensions, and models are irrelevant to the problem solved by this application, so they will not be described in detail. The control method of this utility model is through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail.

[0038] Working principle

[0039] This tunnel-type food freezing equipment with variable frequency speed regulation, according to the size of the food, pre-controls the first winch 5 to wind up and unwind the line, changes the tilt angle of the upper baffle 4, and reduces the gap between the middle of the tunnel cold box 1 and the outside while keeping it as close to the food as possible. The third winch 7 winds up and unwinds the line, changes the tilt angle of the air-gathering plate 13, and controls the electric push rod 15 to extend and retract, so that the movable plate 14 is as close to the food as possible for targeted air blowing and freezing, improving the freezing effect. If the food is not affected by the upper baffle 4, the first winch 5 is controlled to unwind the line, so that the end of the upper baffle 4 falls onto the cold-resistant conveyor 3 by gravity. If the counterweight is insufficient, the second winch 6 is controlled to unwind the line, and the electromagnet 8 is activated. The electromagnet 8 is attracted to the side of the upper baffle 4 to ensure the stability of the upper baffle 4 and reduce the impact of the air blowing of the fan 10.

[0040] Place the food to be frozen onto the refrigerated conveyor 3, turn on the fan 10 and the freezing equipment 12. The freezing equipment 12 cools the air, and the fan 10 blows a gentle breeze to improve the temperature uniformity. The refrigerated conveyor 3 transports the food. Adjust the speed and stop the refrigerated conveyor 3 as needed for freezing.

[0041] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tunnel-type food freezing apparatus implementing variable frequency speed control, characterized by, The utility model relates to a tunnel cold box (1), the inner wall of the lower half of tunnel cold box (1) is connected with two lower baffle (2), the utility model has the advantages of being capable of being used for the food delivery and support, and the food can be frozen in the tunnel cold box (1) and can be taken out. The utility model discloses a tunnel cold box (1), the inner wall of the lower half of tunnel cold box (1) is connected with two lower baffle (2), the utility model has the advantages of being capable of being used for the food delivery and support, and the food can be frozen in the tunnel cold box (1) and can be taken out. Two upper baffles (4) are rotatably connected with the inner top wall of the tunnel cold box (1), two first winches (5) are installed at the top end of the tunnel cold box (1), the steel wire ropes of the two first winches (5) penetrate through the tunnel cold box (1) and are connected with the upper baffles (4), two second winches (6) are installed at the top end of the tunnel cold box (1), the steel wire ropes of the two second winches (6) penetrate through the tunnel cold box (1) and are connected with electromagnets (8), the materials of the two upper baffles (4) are iron materials that can be attracted by the electromagnets (8), and the side surfaces of the electromagnets (8) are detachably connected with counterweights (9). A plurality of fans (10) are installed at the top end of the tunnel cold box (1), the fans (10) are connected with the tunnel cold box (1) through air pipes (11) provided with electromagnetic valves, and refrigeration equipment (12) for freezing food is installed on the inner top wall of the tunnel cold box (1). The two vertically symmetrical inner walls of the tunnel cold box (1) are rotatably connected with wind collecting plates (13), and the steel wire ropes of the two third winches (7) penetrate through the tunnel cold box (1) and are connected with the wind collecting plates (13).

2. The tunnel-type food freezing apparatus of claim 1, wherein the compressor is a variable speed compressor. The wind collecting plate (13) is a hollow structure, and the inner cavity of the wind collecting plate (13) is provided with a movable plate (14).

3. The tunnel-type food freezing apparatus of claim 2, wherein the compressor is a variable speed compressor. The inclined surface of the wind collecting plate (13) is provided with an electric push rod (15), the moving part of the electric push rod (15) is connected with a connecting block (16), and the connecting block (16) is connected with the movable plate (14).

4. The tunnel-type food freezing apparatus of claim 3, wherein the compressor is a variable speed compressor. A temperature sensor (17) for temperature measurement is installed on the inner wall of the tunnel cold box (1).

5. The tunnel-type food freezing apparatus of claim 2, wherein the compressor is a variable speed compressor. A heat preservation layer is bonded to the inner wall of the tunnel cold box (1).

6. The tunnel-type food freezing apparatus of claim 5, wherein the compressor is a variable speed compressor. ​

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