Air duct structure and refrigeration cabinet using the same

Abstract

The present invention relates to the technical field of refrigerators, and in particular to a duct structure and a refrigerator using the same. The technical solution includes: an air duct assembly, including a built-in inclined plate, an air suction fan, a slide plate, a semicircular block, an air blowing fan, a first ladder block and an intermediate piece, the built-in inclined plate is fixedly installed inside the refrigerator body, a plurality of equally spaced air suction fans are fixedly installed on the top of the built-in inclined plate, and the inside of the refrigerator body is connected to the slide plate by sliding up and down, and the slide plate adopts a U-shaped structure. The present invention changes the height of the air blowing fan by sliding the slide plate, and the air blowing fan gradually tilts during the upward sliding of the slide plate. When preserving foods of different thicknesses, the height of the air blowing fan is higher than the food, and the intersection point of the air blowing fan and the air suction fan is always located at the end of the storage hole plate away from the air induction plate, so that circulating cold air is always formed, so that the food is surrounded by cold air in all directions, and the problem of uneven heating of the food is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration cabinets, and in particular to an air duct structure and a refrigeration cabinet using the same. Background Art

[0002] A freezer is a refrigeration device used to refrigerate and freeze food, beverages and other items. It usually uses compressor refrigeration or absorption refrigeration to reduce the internal temperature, inhibit the growth and reproduction of microorganisms, and the enzymatic reaction of the food itself, so that the deterioration process of the food is slowed down, thereby extending the shelf life of the food. The appropriate low temperature environment can keep the food's original taste, color and nutrients. Refrigerator is an indispensable equipment in commercial places such as restaurants, hotels, supermarkets, convenience stores, etc. Restaurants can use refrigerators to store large amounts of meat, vegetables, seasonings and other ingredients to ensure the supply of ingredients for daily operations.

[0003] In the patent document with announcement number CN112413964B, an air-cooled horizontal freezer is proposed. In the air-cooled horizontal freezer, the air with a lower temperature delivered by the air supply device in the first inner liner wall will flow through the items stored near the first inner liner wall with a greater probability, and then be sucked away by the air suction device in the first inner liner wall with a greater probability; the air with a lower temperature delivered by the air supply device in the second inner liner wall will flow through the items stored near the second inner liner wall with a greater probability, and then be sucked away by the air suction device in the second inner liner wall with a greater probability; therefore, the items stored near the first and second inner liner walls can be easily cooled.

[0004] However, when the air-cooled horizontal freezer is in use, the cold air from the air supply device blows toward one side of the food. After the cold air passes over the food, it will be quickly absorbed by the suction air, resulting in a short contact time or even no contact between the other side of the food and the cold air, causing uneven cooling of the food. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the background technology that cold air is quickly absorbed by the air suction device, resulting in uneven cooling of food, and to propose an air duct structure and a refrigeration cabinet using the structure.

[0006] On the one hand, the present invention provides an air duct structure, including a refrigeration cabinet body, a refrigeration compressor is fixedly installed inside the refrigeration cabinet body, and a heat dissipation port is opened on the side of the refrigeration cabinet body and close to the refrigeration compressor; An air duct assembly comprises a built-in inclined plate, an air suction fan, a slide plate, a semicircular block, an air blowing fan, a first ladder block and an intermediate piece, wherein the built-in inclined plate is fixedly installed inside the refrigeration cabinet body, a plurality of air suction fans distributed equidistantly are fixedly installed on the top of the built-in inclined plate, the inside of the refrigeration cabinet body is slidably connected to the slide plate, the slide plate adopts a U-shaped structure, the semicircular block is rotatably connected in the opening of the slide plate, the air blowing fan is fixedly installed on the side of the semicircular block away from the slide plate, the first ladder block is fixedly installed inside the refrigeration cabinet body, the end of the first ladder block adopts a slope design, and an intermediate piece is arranged between the arc surface of the semicircular block and the first ladder block; The regulating assembly comprises a storage hole plate and an air induction plate, wherein the air induction plate is fixedly mounted inside the refrigeration cabinet body, the end of the air induction plate is clamped with the storage hole plate, and the air suction fan and the air blowing fan are respectively located at the upper and lower sides of the storage hole plate; The suction fan and the blowing fan are both arranged obliquely, food is placed on the top of the storage hole plate, and the intersection of the suction fan's exhaust air and the blowing fan's blowing air is located at one end of the storage hole plate away from the air induction plate.

[0007] Optionally, an L-shaped through hole is opened inside the semicircular block, and the blowing fan is connected to the refrigeration compressor through the through hole. A guide rail is fixedly installed on the side of the refrigeration cabinet body, and the slide plate moves up and down along the guide rail. A torque spring is elastically connected between the slide plate and the semicircular block.

[0008] Optionally, the middle part includes a deflection plate, a round rod, a stop plate and a second ladder block. The deflection plate is fixedly installed on the arc surface of the semicircular block. The inside of the skateboard is slidably connected to the round rod left and right. The end of the round rod is fixedly installed with the stop plate. The other end of the round rod is fixedly installed with the second ladder block. The inclined surface of the second ladder block contacts the inclined surface of the first ladder block.

[0009] Optionally, a sliding frame is connected to the inside of the air induced plate for sliding up and down, a ventilating cloth is fixedly installed on the bottom of the sliding frame, pressure plates are fixedly installed on both sides of the sliding frame, a hydraulic conversion component is fixedly installed on the bottom of the pressure plate, the hydraulic conversion component is connected to a hydraulic telescopic rod through a pipeline, and the top of the hydraulic telescopic rod is fixedly connected to the slide plate.

[0010] Optionally, the hydraulic conversion component includes a hydraulic rod, a hydraulic pipe and a hydraulic piston, the hydraulic pipe is fixedly installed inside the air induced plate, the inside of the hydraulic pipe is slidably connected to the hydraulic piston, the hydraulic rod is fixedly installed on the top of the hydraulic piston, and the top of the hydraulic rod is fixedly connected to the pressure plate.

[0011] Optionally, there is an angle between the storage hole plate and the air ducting plate, the sliding frame is arranged obliquely, and an avoidance cavity for displacement of the air-circling cloth is opened inside the air ducting plate.

[0012] Optionally, an anti-wave assembly is provided on the top of the hydraulic pipe, and the anti-wave assembly includes a positioning slot, a cylinder, a slide groove, a positioning block and a positioning spring. A plurality of groups of positioning slots are provided in the middle of the hydraulic rod, and two are in a group. The plurality of groups of positioning slots are equidistantly distributed up and down along the hydraulic rod. A cylinder is fixedly installed on the top of the hydraulic pipe, and a horizontally arranged slide groove is provided inside the cylinder. A positioning block is slidably connected in the slide groove, and a positioning spring is elastically connected between the positioning block and the air induced plate, and the positioning block is engaged with the positioning slot.

[0013] Optionally, both upper and lower sides of the positioning block are provided with inclined surfaces, and the angle between the top inclined surface of the positioning block and the horizontal plane is larger than the angle between the bottom inclined surface of the positioning block and the horizontal plane.

[0014] Optionally, a front glass cover is fixedly mounted on the front side of the refrigeration cabinet body, and a plurality of rear glass doors are slidably connected to the back of the refrigeration cabinet body.

[0015] In another aspect, the present invention provides a refrigeration cabinet, comprising the above-mentioned air duct structure.

[0016] Compared with the prior art, the present invention has at least one of the following beneficial technical effects: The present invention changes the height of the blowing fan by sliding the slide plate. When the slide plate slides upward, the blowing fan gradually tilts. When foods of different thicknesses are preserved, the height of the blowing fan is higher than the foods. The intersection point of the blowing fan and the suction fan is always located at the end of the storage hole plate away from the air induction plate, so that circulating cold air is always formed, so that the foods are surrounded by cold air in all directions, thereby preventing uneven heating of the foods.

[0017] Furthermore, when the height of the blowing fan is lower than the top height of the food, the wind blown by the blowing fan is blocked by the food, and the wind blown by the blowing fan to the surface of the food will flow along the food to the sliding frame, and the ventilating cloth will hold the cold air, so that the ventilating cloth drives the sliding frame to slide, and the sliding frame uses the pressure plate to push the hydraulic rod to make the hydraulic oil in the hydraulic pipe enter the hydraulic telescopic rod, thereby changing the height and angle of the blowing fan. When the height of the blowing fan is lower than the top height of the food, the wind held by the ventilating cloth is reduced, and the hydraulic telescopic rod stops extending, thereby automatically adjusting the height of the blowing fan to make it higher than the top surface height of the food, thereby preventing the cold air from being blocked and unable to circulate.

[0018] Furthermore, by cooperating with the positioning slot and the positioning block to fix the moving distance of the hydraulic rod, multiple sets of positioning slots can make the hydraulic rod have multiple gears, thereby preventing the wind caught by the wind-blowing cloth from being unstable, causing the hydraulic rod to move continuously and causing the position of the blowing fan to fluctuate, thereby stabilizing the blowing direction of the blowing fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1A schematic diagram of the overall structure of an embodiment of the present invention is provided; Figure 2 A schematic structural diagram of a blower fan according to an embodiment of the present invention is provided; Figure 3 A schematic diagram of a slide structure according to an embodiment of the present invention is provided; Figure 4 A schematic diagram of a semicircular block structure according to an embodiment of the present invention is provided; Figure 5 for Figure 4 An enlarged schematic diagram of the guide track structure of part A; Figure 6 It is a schematic diagram of the structure of the storage hole plate; Figure 7 It is a cross-sectional schematic diagram of the induced draft plate structure; Figure 8 It is a schematic diagram of the main cross-sectional view of the hydraulic pipe structure; Fig. 9 It is a schematic cross-sectional view of a cylindrical structure.

[0020] Figure numerals: 1, refrigeration cabinet body; 2, refrigeration compressor; 3, heat dissipation port; 4, front glass cover; 5, rear glass door; 6, air duct assembly; 61, built-in inclined plate; 62, suction fan; 63, slide plate; 64, semicircular block; 65, torque spring; 66, blowing fan; 67, deflection plate; 68, guide track; 69, round rod; 610, abutment plate; 611, first ladder block; 612, second ladder block; 7, adjustment assembly; 71, storage hole plate; 72, air induction plate; 73, slide frame; 74, wind-shaking cloth; 75, pressure plate; 76, avoidance cavity; 77, hydraulic rod; 78, hydraulic pipe; 79, hydraulic piston; 710, hydraulic telescopic rod; 8, anti-wave assembly; 81, positioning slot; 82, cylinder; 83, slide slot; 84, positioning block; 85, positioning spring. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0023] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Embodiment 1: This embodiment proposes a duct structure, such as Figure 1 and Figure 2 As shown, it includes a refrigeration cabinet body 1, a refrigeration compressor 2 is fixedly installed inside the refrigeration cabinet body 1, a heat dissipation port 3 is opened on the side of the refrigeration cabinet body 1 and close to the refrigeration compressor 2, a front glass cover 4 is fixedly installed on the front side of the refrigeration cabinet body 1, and a plurality of rear glass doors 5 are slidably connected to the back of the refrigeration cabinet body 1.

[0027] like Figure 2 and Figure 6 As shown, an adjustment component 7 is provided inside the refrigeration cabinet body 1, and the adjustment component 7 includes a storage hole plate 71 and an air induction plate 72. The air induction plate 72 is fixedly installed inside the refrigeration cabinet body 1, and the end of the air induction plate 72 is clamped in the storage hole plate 71, and food is placed on the storage hole plate 71.

[0028] like Figure 2-Figure 5 As shown, the interior of the refrigeration cabinet body 1 is provided with an air duct assembly 6, and the air duct assembly 6 includes a built-in inclined plate 61, an air suction fan 62, a slide plate 63, a semicircular block 64, an air blowing fan 66, a first ladder block 611 and an intermediate piece. The built-in inclined plate 61 is fixedly installed inside the refrigeration cabinet body 1, and a plurality of equally distributed air suction fans 62 are fixedly installed on the top of the built-in inclined plate 61. The interior of the refrigeration cabinet body 1 is slidably connected to the slide plate 63 up and down, and the slide plate 63 adopts a U-shaped structure. The semicircular block 64 is rotatably connected in the opening of the slide plate 63, and the air blowing fan 66 is fixedly installed on the side of the semicircular block 64 away from the slide plate 63.

[0029] The suction fan 62 and the blowing fan 66 are both arranged at an angle, and the intersection of the suction fan 62 and the blowing fan 66 is located at one end of the storage hole plate 71 away from the air induction plate 72. The blowing fan 66 blows air to the food, and since the blowing fan 66 is arranged at an angle, the top and back of the food can be blown by the cold air. The cold air blown to the front of the food flows from the bottom of the storage hole plate 71 under the action of the suction fan 62, so as to blow directly to the food, increase the contact surface between the food and the cold air, and avoid uneven cooling of the food.

[0030] An L-shaped through hole is provided inside the semicircular block 64, and the blowing fan 66 is connected to the refrigeration compressor 2 through the through hole. A guide track 68 is fixedly installed on the side of the refrigeration cabinet body 1, and the slide plate 63 moves up and down along the guide track 68. A torque spring 65 is elastically connected between the slide plate 63 and the semicircular block 64. The torque spring 65 is used to reset the semicircular block 64, and the blowing fan 66 blows out the cold air produced by the refrigeration compressor 2 through the through hole.

[0031] Furthermore, the middle part includes a deflection plate 67, a round rod 69, a stop plate 610 and a second ladder block 612. The deflection plate 67 is fixedly installed on the arc surface of the semicircular block 64. The inside of the slide plate 63 is slidably connected to the round rod 69 left and right. The end of the round rod 69 is fixedly installed with the stop plate 610, and the other end of the round rod 69 is fixedly installed with the second ladder block 612. The inclined surface of the second ladder block 612 contacts the inclined surface of the first ladder block 611.

[0032] A first ladder block 611 is fixedly installed inside the refrigerating cabinet body 1 . The end of the first ladder block 611 is designed with an inclined surface. An intermediate piece is arranged between the arc surface of the semicircular block 64 and the first ladder block 611 .

[0033] The height of the blowing fan 66 can be changed by sliding the slide plate 63. When the height of the slide plate 63 changes, the slide plate 63 also changes the height of the round rod 69. The second ladder block 612 at the end of the round rod 69 is squeezed by the first ladder block 611, so that the round rod 69 moves toward the semicircular block 64. The round rod 69 pushes the abutment plate 610 to move the deflection plate 67, so that the angle of the semicircular block 64 changes. Therefore, after the height of the blowing fan 66 changes, its inclination angle changes, so that the intersection of the blowing fan 66 and the suction fan 62 is always located at the end of the storage hole plate 71 away from the air induction plate 72.

[0034] In this embodiment, the height of the blowing fan 66 is changed by sliding the slide plate 63. When the slide plate 63 slides upward, the blowing fan 66 gradually tilts. When preserving foods of different thicknesses, the height of the blowing fan 66 is higher than the foods. The blowing fan 66 makes the intersection point of the blowing fan 66 and the suction fan 62 always located at the end of the placement hole plate 71 away from the air induction plate 72, so that circulating cold air is always formed, so that the foods are surrounded by cold air in all directions, thereby avoiding uneven heating of the foods.

[0035] Embodiment 2, based on embodiment 1, this embodiment proposes a duct structure, such as Figure 6 and Figure 7 As shown, the air duct plate 72 is internally connected with a sliding frame 73 so as to slide up and down. There is an angle between the storage hole plate 71 and the air duct plate 72. A ventilating cloth 74 is fixedly installed at the bottom of the sliding frame 73. The sliding frame 73 is tilted. The wind blown by the blowing fan 66 to the surface of the food will flow along the food to the sliding frame 73. The ventilating cloth 74 holds the cold wind, so that the ventilating cloth 74 drives the sliding frame 73 to slide.

[0036] Both sides of the slide frame 73 are fixedly mounted with a pressure plate 75, and the bottom of the pressure plate 75 is fixedly mounted with a hydraulic conversion member, such as Figure 4 As shown, the hydraulic conversion member is connected to the hydraulic telescopic rod 710 through a pipeline, and the top of the hydraulic telescopic rod 710 is fixedly connected to the slide plate 63. The slide frame 73 drives the pressing plate 75 to move, and the pressing plate 75 presses down the hydraulic conversion member and allows the hydraulic oil inside to enter the hydraulic telescopic rod 710, so that the hydraulic telescopic rod 710 moves upward to adjust the height and angle of the blowing fan 66.

[0037] The hydraulic conversion component includes a hydraulic rod 77, a hydraulic pipe 78 and a hydraulic piston 79. The hydraulic pipe 78 is fixedly installed inside the air induced plate 72. The inside of the hydraulic pipe 78 is slidably connected to the hydraulic piston 79. The hydraulic rod 77 is fixedly installed on the top of the hydraulic piston 79. The top of the hydraulic rod 77 is fixedly connected to the pressure plate 75. The inside of the air induced plate 72 is provided with an avoidance cavity 76 for the displacement of the air-circling cloth 74. The pressure plate 75 moves and presses down the hydraulic rod 77, and the hydraulic piston 79 converts the hydraulic oil in the hydraulic pipe 78 into the hydraulic telescopic rod 710, thereby changing the height and angle of the blowing fan 66. The hydraulic telescopic rod 710 is reset by manually moving the blowing fan 66 downward.

[0038] In this embodiment, when the height of the blowing fan 66 is lower than the top height of the food, the wind blown by the blowing fan 66 is blocked by the food, and the wind blown by the blowing fan 66 to the surface of the food will flow along the food to the sliding frame 73, and the ventilating cloth 74 will hold the cold wind, so that the ventilating cloth 74 drives the sliding frame 73 to slide, and the sliding frame 73 uses the pressure plate 75 to push the hydraulic rod 77, so that the hydraulic oil in the hydraulic pipe 78 enters the hydraulic telescopic rod 710, thereby changing the height and angle of the blowing fan 66. When the height of the blowing fan 66 is lower than the top height of the food, the wind held by the ventilating cloth 74 is reduced, and the hydraulic telescopic rod 710 stops extending, thereby automatically adjusting the height of the blowing fan 66 to make its height higher than the top surface height of the food, thereby preventing the cold air from being blocked and unable to circulate.

[0039] Embodiment 3, based on the above embodiment 1 or embodiment 2, this embodiment proposes a duct structure, such as Figure 8 and Fig. 9As shown, an anti-wave component 8 is provided on the top of the hydraulic pipe 78, and the anti-wave component 8 includes a positioning groove 81, a cylinder 82, a slide groove 83, a positioning block 84 and a positioning spring 85. A plurality of groups of positioning grooves 81 are provided in the middle of the hydraulic rod 77, two of which are in a group, and the plurality of groups of positioning grooves 81 are equidistantly distributed up and down along the hydraulic rod 77. A cylinder 82 is fixedly installed on the top of the hydraulic pipe 78, and a horizontally arranged slide groove 83 is provided inside the cylinder 82. A positioning block 84 is slidably connected in the slide groove 83, and a positioning spring 85 is elastically connected between the positioning block 84 and the air induced plate 72, and the positioning block 84 is engaged with the positioning groove 81.

[0040] The hydraulic rod 77 will be caught by the positioning block 84 during its movement. The positioning slot 81 and the positioning block 84 cooperate to fix the moving distance of the hydraulic rod 77. Multiple sets of positioning slots 81 can enable the hydraulic rod 77 to have multiple gears.

[0041] The upper and lower sides of the positioning block 84 are both provided with inclined surfaces. The angle between the top inclined surface of the positioning block 84 and the horizontal plane is larger than the angle between the bottom inclined surface of the positioning block 84 and the horizontal plane. Therefore, the resistance encountered by the hydraulic rod 77 when moving upward is smaller than the resistance encountered when moving downward, so that the positioning slot 81 can be reset.

[0042] In this embodiment, the moving distance of the hydraulic rod 77 is fixed by the cooperation of the positioning slot 81 and the positioning block 84. Multiple sets of positioning slots 81 can make the hydraulic rod 77 have multiple gears, thereby preventing the wind caught by the ventilating cloth 74 from being unstable, causing the hydraulic rod 77 to move continuously and cause the position of the blowing fan 66 to fluctuate, thereby stabilizing the blowing direction of the blowing fan 66.

[0043] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An air duct structure, applied to a refrigeration cabinet body (1), characterized in that: include: An air duct assembly (6) comprises a built-in inclined plate (61), an air suction fan (62), a slide plate (63), a semicircular block (64), an air blowing fan (66), a first ladder block (611) and an intermediate piece, wherein the built-in inclined plate (61) is fixedly installed inside the refrigeration cabinet body (1), a plurality of air suction fans (62) equidistantly distributed are fixedly installed on the top of the built-in inclined plate (61), the inside of the refrigeration cabinet body (1) is slidably connected to the slide plate (63) up and down, the slide plate (63) adopts a U-shaped structure, the semicircular block (64) is rotatably connected in the opening of the slide plate (63), the air blowing fan (66) is fixedly installed on the side of the semicircular block (64) away from the slide plate (63), the first ladder block (611) is fixedly installed inside the refrigeration cabinet body (1), the end of the first ladder block (611) adopts an inclined surface design, and an intermediate piece is arranged between the arc surface of the semicircular block (64) and the first ladder block (611); The regulating assembly (7) comprises a storage hole plate (71) and an air induction plate (72), wherein the air induction plate (72) is fixedly mounted inside the refrigeration cabinet body (1), an end of the air induction plate (72) is clamped to the storage hole plate (71), and the air suction fan (62) and the air blowing fan (66) are respectively located on the upper and lower sides of the storage hole plate (71); The suction fan (62) and the blowing fan (66) are both arranged at an angle, and food is placed on the top of the storage hole plate (71). The intersection of the air drawn by the suction fan (62) and the air blown by the blowing fan (66) is located at an end of the storage hole plate (71) away from the air induction plate (72).

2. The air duct structure according to claim 1, characterized in that: An L-shaped through hole is provided inside the semicircular block (64), and the blowing fan (66) is connected to the refrigeration part of the refrigeration cabinet body (1) through the through hole. A guide rail (68) is fixedly installed on the side of the refrigeration cabinet body (1), and the slide plate (63) moves up and down along the guide rail (68). A torque spring (65) is elastically connected between the slide plate (63) and the semicircular block (64).

3. The air duct structure according to claim 2, characterized in that: The intermediate component comprises a deflection plate (67), a round rod (69), a stop plate (610) and a second ladder block (612); the deflection plate (67) is fixedly mounted on the arc surface of the semicircular block (64); the interior of the slide plate (63) is slidably connected to the round rod (69) from left to right; the stop plate (610) is fixedly mounted on the end of the round rod (69); the second ladder block (612) is fixedly mounted on the other end of the round rod (69); and the inclined surface of the second ladder block (612) contacts the inclined surface of the first ladder block (611).

4. The air duct structure according to claim 3, characterized in that: The air induction plate (72) is internally connected to a sliding frame (73) for sliding upward and downward movement, a draught cloth (74) is fixedly mounted on the bottom of the sliding frame (73), pressure plates (75) are fixedly mounted on both sides of the sliding frame (73), a hydraulic conversion component is fixedly mounted on the bottom of the pressure plate (75), the hydraulic conversion component is connected to a hydraulic telescopic rod (710) via a pipeline, and the top of the hydraulic telescopic rod (710) is fixedly connected to the slide plate (63).

5. The air duct structure according to claim 4, characterized in that: The hydraulic conversion component comprises a hydraulic rod (77), a hydraulic pipe (78) and a hydraulic piston (79); the hydraulic pipe (78) is fixedly mounted inside the air induced plate (72); the inside of the hydraulic pipe (78) is slidably connected to the hydraulic piston (79); the top of the hydraulic piston (79) is fixedly mounted with the hydraulic rod (77); and the top of the hydraulic rod (77) is fixedly connected to the pressure plate (75).

6. The air duct structure according to claim 5, characterized in that: An angle is formed between the storage hole plate (71) and the air induction plate (72); the sliding frame (73) is arranged at an angle; and an escape cavity (76) for displacement of the air-circulating cloth (74) is provided inside the air induction plate (72).

7. The air duct structure according to claim 6, characterized in that: An anti-wave component (8) is arranged at the top of the hydraulic pipe (78), and the anti-wave component (8) comprises a positioning slot (81), a cylinder (82), a slide groove (83), a positioning block (84) and a positioning spring (85). A plurality of groups of positioning slots (81) are arranged in the middle of the hydraulic rod (77), two of each group being arranged in a group, and the plurality of groups of positioning slots (81) are equidistantly distributed up and down along the hydraulic rod (77). A cylinder (82) is fixedly mounted on the top of the hydraulic pipe (78), and a horizontally arranged slide groove (83) is arranged inside the cylinder (82). A positioning block (84) is slidably connected inside the slide groove (83), and a positioning spring (85) is elastically connected between the positioning block (84) and the air induction plate (72), and the positioning block (84) is engaged with the positioning slot (81).

8. The air duct structure according to claim 7, characterized in that: The upper and lower sides of the positioning block (84) are both provided with inclined surfaces, and the angle between the top inclined surface of the positioning block (84) and the horizontal plane is larger than the angle between the bottom inclined surface of the positioning block (84) and the horizontal plane.

9. The air duct structure according to claim 8, characterized in that: A front glass cover (4) is fixedly mounted on the front side of the refrigeration cabinet body (1), and a plurality of rear glass doors (5) are slidably connected to the back of the refrigeration cabinet body (1).

10. A refrigerating cabinet, comprising the air duct structure according to claim 9, characterized in that: A refrigeration compressor (2) is fixedly installed inside the refrigeration cabinet body (1), and a heat dissipation port (3) is provided on the side of the refrigeration cabinet body (1) and close to the refrigeration compressor (2).

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