A circulating air guide mechanism for cold storage

Abstract

The utility model relates to the technical field of air supply structures, and discloses a circulating air guide mechanism of a cold storage, including an air outlet duct and a branch duct extending to the ground, a circulating air path is formed between the air outlet duct and the branch duct, a driving frame is provided on one side of the branch duct, a return air duct is fixedly connected to the top of the driving frame, an output end of the driving frame is connected to a swing return air outlet connected to the return air duct, and the driving frame is used to drive the swing return air outlet to swing horizontally. The utility model can expand the area of ​​cold air suction by the device by providing the reciprocating swing of the swing return air outlet, ensure the uniform distribution of temperature in the cold storage, and prevent uneven temperature distribution in the cold storage. When the return air duct sucks the cold air at the bottom of the cold storage, the suction force generated can be diffused to the surroundings through a plurality of inclined air guide plates, so as to achieve uniform distribution of suction force. The plurality of air guide plates are arranged in a fan shape, so as to further improve the uniform air suction of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of air supply structures, in particular to a circulating air guide mechanism for a cold storage. Background Art

[0002] Cold storage is mainly used for freezing and refrigerating food, liquids, chemicals, medicines, vaccines, scientific experiments and other items. In order to make rational use of the space in the cold storage, very high shelves or even ceiling hanging shelves are usually used to place the goods.

[0003] Because hot air has low density and light weight, while cold air has high density and heavy weight, the temperature of the upper shelf is higher than that of the lower shelf, that is, the temperature distribution in the cold storage is uneven, which will affect the control of the temperature in the cold storage and the quality of the goods stored in the cold storage. In order to solve the above problems, we propose a circulating air guide mechanism for the cold storage. Utility Model Content

[0004] The utility model aims to provide a circulating air guiding mechanism for a cold storage, so as to solve the problem that the temperature distribution in the cold storage is uneven and affects the temperature control in the cold storage.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a circulating air guiding mechanism for a cold storage, comprising an air outlet duct and a branch duct extending to the ground, a circulating air path being formed between the air outlet duct and the branch duct, characterized in that the bottom of the branch duct is connected to a return air duct, the air inlet end of the return air duct is movably connected to a swing return air outlet, and the swing return air outlet is connected to a swing component for driving the swing return air outlet to swing.

[0006] According to the above technical solution, a plurality of air guide plates are vertically fixedly connected to the inner wall of one end of the swing return air outlet away from the return air duct, and the plurality of air guide plates are gradually inclined from the middle to both sides.

[0007] According to the above technical solution, the end of the swing return air outlet is arranged in a fan shape, and a plurality of the air guide plates are arranged along the edge of the fan shape.

[0008] According to the above technical solution, a filter screen is detachably installed in the swing return air outlet.

[0009] According to the above technical solution, a swing component connected to the swing return air outlet is provided in the driving frame, and the swing component is used to control the swing trajectory of the swing return air outlet.

[0010] According to the above technical solution, the swing assembly includes a first gear and a rotating shaft, the outer wall of the rotating shaft is fixedly connected with a hinge plate, the bottom of the first gear is equipped with a crank through the rotation of the shaft, and the crank is connected to the hinge plate through the rotation of the shaft.

[0011] According to the above technical solution, a dual-shaft motor is fixedly connected in the return air duct, a ventilation fan blade is fixedly connected to an output shaft at one end of the dual-shaft motor, and the other end of the dual-shaft motor is connected to the first gear via a speed change assembly.

[0012] According to the above technical solution, the speed change assembly includes an optical shaft rotatably connected to the drive frame, one end of the optical shaft passes through the return air duct and is fixedly connected to a worm gear, the other end of the dual-axis motor is fixedly connected to a worm meshing with the worm gear, and the other end of the optical shaft extends into the drive frame and is fixedly connected to a second gear meshing with the first gear.

[0013] According to the above technical solution, the swing return air outlet is connected to the return air duct through a bellows.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model is provided with a swinging return air outlet. As the swinging return air outlet swings back and forth, the area for the device to draw cold air can be expanded, thereby ensuring uniform distribution of temperature in the cold storage and preventing uneven temperature distribution in the cold storage from affecting the control of the temperature in the cold storage. When the return air duct draws cold air at the bottom of the cold storage, the suction force generated can be diffused to the surroundings through a plurality of inclined air guide plates, thereby achieving uniform distribution of suction force. The plurality of air guide plates are arranged in a fan shape, thereby further improving the uniform air suction of the device and ensuring uniform distribution of temperature in the cold storage.

[0016] The utility model is provided with a swing component for controlling the swing trajectory of the swing return air outlet so that the swing return air outlet can swing back and forth. When the double-axis motor drives the ventilation fan blades to work, the double-axis motor can drive the worm to rotate and realize the primary deceleration of the drive under the speed change of the worm wheel, and the meshing rotation of the second gear and the first gear realizes the secondary deceleration of the drive. With the rotation of the first gear, the swing return air outlet can swing back and forth under the transmission of the crank, the hinged plate and the rotating shaft, which can expand the area of ​​the device to draw cold air, further draw cold air at the bottom of the cold storage, and ensure the uniform distribution of temperature in the cold storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a cross-sectional view of the overall structure of the air guide device of the utility model;

[0018] Figure 2 It is a connection diagram of the return air duct and the swing return air outlet of the utility model;

[0019] Figure 3 It is a top view of the wind deflector of the utility model;

[0020] Figure 4 It is a connection diagram of the swing assembly and the speed change assembly of the utility model;

[0021] In the figure: 1. drive frame; 2. air guide plate; 3. bellows; 4. filter; 5. swing assembly; 51. rotating shaft; 52. hinge plate; 53. crank; 54. first gear; 6. speed change assembly; 61. worm; 62. second gear; 63. optical axis; 64. worm gear; 7. dual-axis motor; 8. ventilation fan blades; 100. swing return air outlet; 200. return air duct; 300. branch duct; 400. outlet duct. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 The utility model provides a technical solution: a circulating air guide mechanism for a cold storage, including an air outlet duct 400 and a branch duct 300 extending to the ground, the air outlet duct 400 and the branch duct 300 are both connected to a main duct arranged on the top of the cold storage, and a circulating air path is formed between the air outlet duct 400 and the branch duct 300, so that the cold air in the cold storage is more evenly distributed.

[0024] The bottom of the branch duct 300 is connected to the return air duct 200 , and the return air duct 200 is movably connected to the swing return air outlet 100 . The swing return air outlet 100 is connected to a swing component 5 that drives the swing return air outlet 100 to swing horizontally to control the swing trajectory of the swing return air outlet 100 .

[0025] A driving frame 1 is provided on one side of the branch duct 300, and a return air duct 200 is fixedly connected to the top of the driving frame 1. The driving frame 1 is fixed to the ground and is used to support the return air duct 200. The cold air at the bottom of the cold storage is sucked through the return air duct 200, blown into the main duct through the branch duct 300, and discharged to the top of the cold storage through the outlet duct 400. In this way, a circulating air path is formed between the return air duct 200, the branch duct 300 and the outlet duct 400 to ensure uniform temperature distribution in the cold storage.

[0026] With the reciprocating swing of the swing return air outlet 100, the area of ​​the device sucking cold air can be expanded, further ensuring the uniform distribution of temperature in the cold storage, and preventing the problem of uneven temperature distribution in the cold storage, which affects the temperature control in the cold storage.

[0027] Specifically, a plurality of air guide plates 2 are vertically fixed to the inner wall of one end of the swing return air outlet 100 away from the return air duct 200. The plurality of air guide plates 2 are gradually inclined from the middle to both sides, and an air guide outlet is formed between two adjacent air guide plates 2, so that the suction generated in the duct can be diffused to the surroundings through the plurality of inclined air guide plates 2, thereby achieving uniform distribution of suction, helping to avoid uneven suction such as excessive or weak suction in certain areas, and at the same time reducing the noise generated during the flow of cold air, thereby improving the quietness performance of the entire system.

[0028] Specifically, the end of the swing return air outlet 100 is fan-shaped, and a number of air guide plates 2 are arranged along the edge of the fan, which further improves the uniform air intake of the device, ensures the uniform distribution of temperature in the cold storage, and prevents uneven temperature distribution in the cold storage, which affects the temperature control in the cold storage.

[0029] Specifically, a detachable filter screen 4 is installed in the swing return air outlet 100 to prevent foreign matter from entering.

[0030] Specifically, the swing assembly 5 includes a rotating shaft 51 and a first gear 54, which are rotatably connected to the drive frame 1 via bearings respectively. The rotating shaft 51 passes through the drive frame 1 and is fixedly connected to the swing return air outlet 100, so that the rotating shaft 51 can drive the swing return air outlet 100 to rotate. A hinge plate 52 is fixedly connected to the outer wall of the rotating shaft 51. A crank 53 is installed at the bottom of the first gear 54 away from the center through a shaft rod. The crank 53 is rotatably connected to the hinge plate 52 through a shaft rod. As the first gear 54 rotates, the first gear 54 can drive one end of the crank 53 to make a circular motion, so that the other end of the crank 53 drives the hinge plate 52 to move, and then drives the swing return air outlet 100 to swing back and forth through the rotating shaft 51.

[0031] Specifically, a base is fixedly connected to the return air duct 200, and a double-axis motor 7 is fixed on the base. A ventilation blade 8 is fixedly connected to the output shaft at one end of the double-axis motor 7. The ventilation blade 8 is driven to rotate by the double-axis motor 7, so that the ventilation blade 8 can blow the cold air at the bottom of the cold storage through the return air duct 200 into the branch duct 300, and then enter the main duct, and discharge the cold air to the top of the cold storage through the outlet duct 400. In this way, a circulating air path is formed between the return air duct 200, the branch duct 300, and the outlet duct 400 to ensure uniform temperature distribution in the cold storage.

[0032] Specifically, the other end of the dual-axis motor 7 is connected to the first gear 54 through the speed change assembly 6, so that the device can achieve air exchange and swinging of the swing return air outlet 100 through a driving device, simplifying the overall structure, reducing energy consumption, reducing manufacturing costs and maintenance costs, and further reducing noise. The set speed change assembly 6 can change the rotation speed of the drive, so that the rotational motion of the dual-axis motor 7 is converted into the reciprocating swinging motion of the swing return air outlet 100, and the swinging speed can be adjusted through the speed change assembly 6.

[0033] Specifically, the speed change assembly 6 includes an optical axis 63 rotatably connected to the drive frame 1, the optical axis 63 is rotatably connected to the return air duct 200, one end of the optical axis 63 passes through the return air duct 200 and is fixedly connected to a worm gear 64, and the other end of the dual-axis motor 7 is fixedly connected to a worm 61 meshing with the worm gear 64. When the worm 61 meshes and rotates with the worm gear 64, the helix of the worm gradually reduces the circumferential speed of the worm gear, thereby achieving a primary deceleration of the drive.

[0034] The other end of the optical axis 63 extends into the driving frame 1 and is fixedly connected to a second gear 62 that meshes with the first gear 54. The diameter of the second gear 62 is smaller than that of the first gear 54. The second gear 62 is an active component. The second gear 62 drives the first gear 54 to rotate, thereby realizing secondary deceleration of the drive, thereby reducing the output speed of the speed change assembly 6, thereby reducing the swing speed of the swing return air outlet 100.

[0035] Specifically, the swing return air outlet 100 is connected to the return air duct 200 through the bellows 3, and the two ends of the bellows 3 are sealed with the swing return air outlet 100 and the return air duct 200 through flanges respectively. The bendability, corrosion resistance and sealing performance of the bellows allow the swing return air outlet 100 to swing flexibly.

[0036] Working principle:

[0037] When in use, the dual-axis motor 7 drives the ventilation blades 8 to rotate, and the cold air at the bottom of the cold storage is sucked through the return air duct 200. As the ventilation blades 8 rotate, the output shaft at the other end of the dual-axis motor 7 can drive the worm 61 to rotate, and the worm 61 engages with the worm gear 64 to rotate, thereby realizing a primary deceleration of the drive, and the worm gear 64 can drive the optical axis 63 to rotate, so that the second gear 62 rotates, and then the second gear 62 drives the first gear 54 to rotate, thereby realizing a secondary deceleration of the drive. As the first gear 54 rotates, the first gear 54 can drive one end of the crank 53 to make a circular motion, so that the other end of the crank 53 drives the hinged plate 52 to move, and then the swing return air outlet 100 is driven to swing back and forth horizontally through the rotating shaft 51, which can expand the area of ​​the device for sucking cold air, further suck the cold air at the bottom of the cold storage, and ensure the uniform distribution of temperature in the cold storage.

[0038] The cold air entering the swing return air outlet 100 will be blown into the main duct through the branch duct 300, and discharged to the top of the cold storage through the outlet duct 400, so that a circulating air path is formed between the return air duct 200, the branch duct 300 and the outlet duct 400 to ensure uniform temperature distribution in the cold storage.

[0039] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A circulating air guide mechanism for a cold storage, comprising an air outlet duct (400) and a branch duct (300) extending to the ground, wherein a circulating air path is formed between the air outlet duct (400) and the branch duct (300), characterized in that: The bottom of the branch duct (300) is connected to a return air duct (200), the air inlet end of the return air duct (200) is movably connected to a swing return air outlet (100), and the swing return air outlet (100) is connected to a swing component (5) for driving the swing return air outlet (100) to swing.

2. The circulating air guide mechanism of a cold storage according to claim 1, characterized in that: An air guide plate (2) is vertically fixedly connected to the inner wall of one end of the swing return air outlet (100) away from the return air duct (200), and the air guide plate (2) is gradually inclined from the middle to both sides.

3. The circulating air guide mechanism of a cold storage according to claim 2, characterized in that: The end of the swing return air outlet (100) is arranged in a fan shape, and the air guide plate (2) is arranged along the edge of the fan shape.

4. The circulating air guide mechanism of a cold storage according to claim 3, characterized in that: A detachable filter screen (4) is installed in the swing return air outlet (100).

5. The circulating air guide mechanism of a cold storage according to claim 1, characterized in that: The swing assembly (5) comprises a first gear (54) and a rotating shaft (51), the outer wall of the rotating shaft (51) is fixedly connected with a hinge plate (52), the bottom of the first gear (54) is equipped with a crank (53) through the rotation of the shaft, and the crank (53) is connected to the hinge plate (52) through the rotation of the shaft.

6. The circulating air guide mechanism of a cold storage according to claim 5, characterized in that: A double-shaft motor (7) is fixedly connected in the return air duct (200), an output shaft at one end of the double-shaft motor (7) is fixedly connected to a ventilation fan blade (8), and the other end of the double-shaft motor (7) is connected to the first gear (54) via a speed change assembly (6).

7. The circulating air guide mechanism of a cold storage according to claim 6, characterized in that: The speed change assembly (6) includes an optical axis (63) rotatably connected to the return air duct (200), one end of the optical axis (63) passes through the return air duct (200) and is fixedly connected to a worm gear (64), the other end of the dual-axis motor (7) is fixedly connected to a worm (61) meshing with the worm gear (64), and the other end of the optical axis (63) is fixedly connected to a second gear (62) meshing with the first gear (54).

8. The circulating air guide mechanism of a cold storage according to claim 1, characterized in that: The swing return air port (100) is connected to the return air duct (200) via a bellows (3).

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