disinfection cabinet

Abstract

A disinfection cabinet comprises a cabinet body, a middle drawer, a lower drawer, and a top drawer, characterized in that a heating element is provided on the side wall or bottom plate of the top drawer. The disinfection cabinet also comprises a rotating shaft, a flap, a first pulley, a rack, a rotating shaft, a second pulley, a synchronous belt, a gear, a spring, a bimetallic strip, and a buckle. When the flap is in a vertical position, the gap between the inner side of the top drawer and the cabinet top plate is sealed. When the flap is in a horizontal position, the gap between the inner side of the top drawer and the cabinet top plate is opened to the maximum extent. An independent heating element is used to heat and disinfect the top drawer. At the same time, by controlling the flap, when the heat in the top drawer reaches a certain level, the flap rotates to transfer the heat from the top drawer to the inner container of the cabinet.

Description

Technical Field

[0001] The present invention relates to a disinfection device, in particular to a kitchenware disinfection cabinet, which can be used for disinfecting kitchenware and the like. Background Art

[0002] Disinfection cabinets can be used to sterilize a variety of different utensils, such as cutting boards, knives, baby utensils such as bottles, pacifiers, and soup spoons, as well as dishes and chopsticks. Currently, disinfection cabinets usually use a disinfection device built into the disinfection chamber for disinfection. Common disinfection cabinets generally have only one disinfection chamber, which is basically equipped with two upper and lower shelves, each with a door panel. The upper space of both shelves is large, which can accommodate large-area dishes, etc. However, small-sized knives and soup spoons are also usually required to be sterilized. If these small-sized and small-area utensils are placed together with large-area dishes, the space utilization rate is obviously reduced, the efficiency is greatly reduced, the cost of use is increased, and the disinfection effect is affected.

[0003] Currently, there are many two-door, three-drawer disinfection cabinets on the market. These disinfection cabinets have an independent small cavity space on the top drawer as a top drawer. The top drawer can be used to place small items such as knives and soup spoons. For relevant literature, please refer to the Chinese utility model patent No. ZL201720119560.8 "A Disinfection Cabinet" (authorization publication No. CN 207119018U), which mentions a hidden small drawer. You can also refer to the Chinese invention patent application No. 202211525052.1 "Disinfection Cabinet Drawer Guide Structure and Installation Method Thereof" (application publication No. CN115845106A), in which drawer 6 is equivalent to the top drawer.

[0004] The top drawer is essentially shielded from direct UV radiation and is far from the heat source, resulting in poor disinfection effectiveness, making it difficult to achieve a two-star disinfection rating. To address this issue, most two-door, three-drawer disinfection cabinets on the market use full-machine high-temperature disinfection, or separate upper and lower chambers with independent functional components. This improves the disinfection effectiveness of the top drawer, achieving a two-star rating for the entire unit. However, this approach comes at a higher cost. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a disinfection cabinet with a top drawer, low cost and satisfactory sterilization effect in response to the above technical status quo.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: a disinfection cabinet, including a cabinet body, a middle drawer, a lower drawer and a top drawer, the middle drawer can be pulled out and arranged in the upper end inner cavity of the cabinet body, the lower drawer can be pulled out and arranged in the lower end inner cavity of the cabinet body, and the top drawer can be pulled out and arranged in the top inner cavity of the cabinet body and located in the middle drawer, characterized in that a heating element is provided on the side wall or bottom plate of the top drawer, and the disinfection cabinet also includes

[0007] A rotating shaft is rotatably arranged in the top inner cavity of the cabinet;

[0008] A flap is provided at one end of the rotating shaft and is located in the gap between the inner side of the top drawer and the top plate of the cabinet. When the flap is in a vertical position, the gap between the inner side of the top drawer and the top plate of the cabinet is sealed. When the flap is in a horizontal position, the gap between the inner side of the top drawer and the top plate of the cabinet is opened to the maximum extent.

[0009] a first pulley disposed at the other end of the rotating shaft;

[0010] Rack, located at the bottom of the top drawer;

[0011] A rotating shaft is rotatably arranged in the top inner cavity of the cabinet and located below the top drawer;

[0012] a second pulley, disposed at the other end of the rotating shaft;

[0013] a synchronous belt wound around the outer circumferences of the first and second pulleys;

[0014] A gear, provided at one end of the rotating shaft and meshing with the rack for transmission;

[0015] a mainspring, mounted on the aforementioned rotating shaft;

[0016] A bimetallic strip, one end of which is disposed on the side wall of the top drawer and the other end of which is a free end; the bimetallic strip comprises a first metal strip and a second metal strip stacked together, wherein the first metal strip has a greater thermal expansion coefficient than the second metal strip; and

[0017] The buckle is arranged at the lower end of the aforementioned flip plate and can be engaged with the aforementioned bimetallic strip.

[0018] The heating element is preferably designed as follows: the heating element is a heating coil, which is arranged on the lower end surface of the bottom plate of the top drawer, and a mounting plate is arranged on the bottom plate of the top drawer to encapsulate the heating coil.

[0019] Furthermore, an inner plug-in unit is provided on the side wall of the inner cavity of the cabinet. When the top drawer is accommodated in the inner cavity of the cabinet, the conductive end of the heating coil contacts the inner plug-in unit to achieve conductive connection.

[0020] The buckle and the bimetallic strip are specifically designed to achieve detachable engagement: a flange is provided on the side wall of the top drawer near the free end of the bimetallic strip, and a gap is formed between the flange and the free end of the bimetallic strip for the buckle to engage.

[0021] Furthermore, guide rails are provided on both sides of the inner cavity at the upper end of the cabinet body, and correspondingly, sliding members that cooperate with the aforementioned guide rails are provided on both sides of the top drawer.

[0022] Furthermore, a heating pipe is provided at the lower end of the inner cavity of the cabinet.

[0023] Furthermore, an ultraviolet disinfection lamp is provided at the lower end of the inner cavity of the cabinet.

[0024] Preferably, the thermal expansion temperature range of the first metal sheet and the second metal sheet is 60-120°C.

[0025] The first metal sheet is located on the inner side of the second metal sheet. In this way, the first metal sheet senses the heat of the top drawer first, which is conducive to the deformation of the bimetallic sheet.

[0026] Compared with the existing technology, the advantages of the present invention are: an independent heating element is used to heat and disinfect the top drawer, and at the same time, a flap, gear, rack, first pulley, second pulley, synchronous belt, spring and buckle are combined with a bimetallic strip to realize the control of the flap. When the heat in the top drawer reaches a certain level, the flap rotates and the heat is transferred from the top drawer to the inner tank of the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of an embodiment.

[0028] Figure 2 This is the status diagram when the middle drawer and lower drawer are opened.

[0029] Figure 3 It is a three-dimensional cross-sectional view of an embodiment.

[0030] Figure 4 This is an enlarged view of the top drawer when installed.

[0031] Figure 5 This is a schematic diagram of the top drawer structure.

[0032] Figure 6 for Figure 5 Schematic diagram of the structure from another perspective.

[0033] Figure 7 for Figure 6 Exploded diagram of .

[0034] Figure 8 for Figure 7 Enlarged view of part A in the middle.

[0035] Figure 9 for Figure 5 Schematic diagram of the structure from another perspective.

[0036] Figure 10 Schematic diagram of the flap in the horizontal state in the embodiment. DETAILED DESCRIPTION

[0037] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0038] like Figure 1 、 Figure 2 and Figure 3 As shown, the disinfection cabinet in this embodiment includes a cabinet body 1, a middle drawer 11, a lower drawer 12, and a top drawer 2. The middle drawer 11 is retractable and arranged in the upper inner cavity of the cabinet body 1, the lower drawer 12 is retractable and arranged in the lower inner cavity of the cabinet body 1, and the top drawer 2 is retractable and arranged in the top inner cavity of the cabinet body 1 and is located in the middle drawer 11. A heating tube 14 is provided at the lower end of the inner cavity of the cabinet body 1. An ultraviolet disinfection lamp 13 is provided at the lower end of the inner cavity of the cabinet body 1.

[0039] The top drawer 2 is far away from the heating tube 14, and the internal hot air circulation cannot effectively bring the heat upwards. The irradiation of the ultraviolet disinfection lamp 13 is also blocked by the middle drawer 11. At the same time, the gap between the top drawer 2 and the top plate of the inner tank is large, and the internal heat cannot be effectively accumulated, and a better disinfection effect cannot be achieved.

[0040] Combine Figure 4 As shown, guide rails 16 are provided on both side walls 15 of the inner cavity at the upper end of the cabinet body 1 , and correspondingly, sliding members 17 are provided on both sides of the top drawer 2 to guide and cooperate with the guide rails 16 .

[0041] Combine Figure 7 As shown, a heating element 6 is provided on the bottom plate of the top drawer 2. Specifically, the heating element 6 is a heating coil, which is provided on the lower end surface of the bottom plate of the top drawer 2. A mounting plate 62 is provided on the bottom plate of the top drawer 2 to encapsulate the heating coil. An inner plug (not shown) is provided on the side wall of the inner cavity of the cabinet body 1. When the top drawer 2 is stored in the inner cavity of the cabinet body 1, the conductive end of the heating coil contacts the inner plug to achieve electrical connection.

[0042] Combine Figures 5 to 9 As shown, the disinfection cabinet in this embodiment further includes a rotating shaft 31, a flap 3, a first pulley 32, a rack 22, a rotating shaft 31, a second pulley 52, a synchronous belt 53, a gear 51, a spring 54 and a bimetallic strip 4.

[0043] The rotating shaft 31 is rotatably arranged in the top inner cavity of the cabinet 1; the first pulley 32 is arranged at the other end of the rotating shaft 31, and the rack 22 is arranged at the bottom of the top drawer 2. The length of the rack 2 can be determined by the stroke required for the flip plate to rotate 90°. The rack is an auxiliary mechanical structure for achieving the secondary disinfection effect of the top drawer.

[0044] The rotating shaft 31 is rotatably arranged in the top inner cavity of the cabinet 1 and is located below the top drawer 2. The second pulley 52 is arranged at the other end of the rotating shaft 31; the synchronous belt 53 is wound around the outer circumference of the first pulley 32 and the second pulley 52; the gear 51 is arranged at one end of the rotating shaft 31 and meshes with the rack 22 for transmission. The spring 54 can store power and is arranged on the rotating shaft 31.

[0045] The flap 3 is arranged at one end of the rotating shaft 31 and is located in the gap between the inner side of the top drawer 2 and the top plate of the cabinet 1. Figure 5 As shown, the flap 3 is in a vertical state, and the gap between the inner side of the top drawer 2 and the top plate of the cabinet 1 is sealed. Figure 10 As shown, the flap 3 is in a horizontal state, and the gap between the inner side of the top drawer 2 and the top plate of the cabinet 1 is opened to the maximum extent.

[0046] One end of the bimetallic strip 4 is arranged on the side wall of the top drawer 2, and the other end forms a free end; the bimetallic strip 4 includes a first metal strip 41 and a second metal strip 42 stacked together, and the thermal expansion coefficient of the first metal strip 41 is greater than that of the second metal strip 42; the thickness of the bimetallic strip 4 is 0.5 to 2 mm, and the thermal expansion temperature range is 60 to 120°C.

[0047] In this embodiment, the first metal sheet is an aluminum sheet, and the second metal sheet is a copper sheet. The thermal expansion coefficient of the aluminum sheet is greater than that of the copper sheet. When a certain ambient temperature is reached, aluminum is more easily deformed than copper. Therefore, these two materials are used to achieve bending direction and corresponding functions.

[0048] The buckle 33 is provided at the lower end of the flap 3 and can be engaged with the bimetallic strip 4. Figure 8 As shown, a flange 21 is provided on the side wall of the top drawer 2 near the free end of the bimetallic strip 4 , and a gap is formed between the flange 21 and the free end of the bimetallic strip 4 for the buckle 33 to engage with.

[0049] When the top drawer is open or removed from the cabinet, the flap is held horizontally by the spring. As the top drawer gradually closes, the rack at its bottom engages with the gear, driving the shaft to rotate. The spring tightens to store energy, and simultaneously drives the flap to rotate via the outer timing belt and gear.

[0050] When the top drawer is completely closed, the flap will change from its previous horizontal state to a vertical state under the drive of the synchronous belt, and the buckle set on the flap will lock the gap with the bimetallic strip of the top drawer to prevent the spring energy from being released and causing the flap to change to a horizontal state. The buckle is stuck in the reserved gap between the bimetallic strip and the flange of the top drawer to lock the flap. When the flap is in a vertical state, the gap between the top drawer and the top plate of the inner liner is closed, so that a relatively independent and closed space is formed between the top drawer and the top plate of the inner liner. At this time, the disinfection function is turned on, and the heating coil on the top drawer will start working. Due to its independent and closed space, the temperature in the top drawer rises faster, which can make up for the problem of poor disinfection effect caused by insufficient disinfection temperature in the top drawer, and achieve better disinfection effect.

[0051] When the temperature inside the top drawer rises rapidly, due to its small enclosed space, its internal temperature will be higher than the temperature inside the disinfection cabinet, making the ambient temperature of the first metal sheet higher than that of the second metal sheet. In addition, the thermal expansion coefficient of the first metal sheet is greater than that of the second metal sheet. The combination of these two factors causes the bimetallic sheet to deform rapidly, causing the bimetallic sheet to bend toward the inside of the top drawer, which increases the gap between the bimetallic sheet and the top drawer body, so that the buckle on the flap can disengage from the gap and no longer lock the flap.

[0052] When the bimetallic strip bends, the latch is no longer locked, and the energy stored in the spring is released. This energy drives the flap to rotate via the timing belt and gears, changing it from a vertical position to a horizontal position. The gears rotate in one direction, and the spring releases energy to drive the shaft to rotate, which will not affect the position of the top drawer through the meshing of the internal gear rack. When the flap is in the horizontal position, the gap between the top drawer and the inner tank assembly increases. At this time, the heat inside the top drawer is transferred through the gap to the large cabinet cavity, assisting the heating function of the large cabinet cavity, making the temperature throughout the cavity more uniform and achieving better drying and disinfection effects. At the same time, when the top drawer reaches the temperature threshold, the flap returns to the horizontal position. The release of internal heat also prevents the internal temperature of the top drawer from overheating, which may cause deformation of the tableware.

Claims

1. A disinfection cabinet, comprising a cabinet body (1), a middle drawer (11), a lower drawer (12) and a top drawer (2), wherein the middle drawer (11) is pullable and arranged in the upper inner cavity of the cabinet body (1), the lower drawer (12) is pullable and arranged in the lower inner cavity of the cabinet body (1), and the top drawer (2) is pullable and arranged in the top inner cavity of the cabinet body (1) and is located in the middle drawer (11), characterized in that The side wall or bottom plate of the top drawer (2) is provided with a heating element (6). The disinfection cabinet also includes A rotating shaft (31) is rotatably disposed in the top inner cavity of the cabinet (1); The flap (3) is provided on one side of the rotating shaft (31) and is located in the gap between the inner side of the top drawer (2) and the top plate of the cabinet (1). When the flap (3) is in a vertical state, the gap between the inner side of the top drawer (2) and the top plate of the cabinet (1) is sealed. When the flap (3) is in a horizontal state, the gap between the inner side of the top drawer (2) and the top plate of the cabinet (1) is opened to the maximum extent. A first pulley (32) is provided at one end of the rotating shaft (31); A rack (22) is provided at the bottom of the top drawer (2); A rotating shaft (5) is rotatably arranged in the top inner cavity of the cabinet (1) and is located below the top drawer (2); A second pulley (52) is provided at the other end of the rotating shaft (5); A synchronous belt (53) is wound around the outer periphery of the first pulley (32) and the second pulley (52); A gear (51) is provided at one end of the rotating shaft (5) and meshes with the rack (22) for transmission; a spring (54) mounted on the aforementioned rotating shaft (5); A bimetallic strip (4), one end of which is arranged on the side wall of the top drawer (2) and the other end of which forms a free end; the bimetallic strip (4) comprises a first metal strip (41) and a second metal strip (42) stacked together, and the thermal expansion coefficient of the first metal strip (41) is greater than that of the second metal strip (42); and The buckle (33) is arranged at the lower end of the aforementioned flap (3) and can be engaged with the aforementioned bimetallic strip (4).

2. The disinfection cabinet according to claim 1, characterized in that The heating element (6) is a heating coil, which is arranged on the lower end surface of the bottom plate of the top drawer (2). A mounting plate (62) is arranged on the bottom plate of the top drawer (2) to encapsulate the heating coil.

3. The disinfection cabinet according to claim 2, characterized in that An inner plug-in unit is provided on the side wall of the inner cavity of the cabinet (1); when the top drawer (2) is accommodated in the inner cavity of the cabinet (1), the conductive end of the heating coil contacts the inner plug-in unit to achieve conductive connection.

4. The disinfection cabinet according to claim 1, characterized in that The side wall of the top drawer (2) is provided with a flange (21) near the free end of the bimetallic strip (4), and a gap is formed between the flange (21) and the free end of the bimetallic strip (4) for the buckle (33) to engage with the gap.

5. The disinfection cabinet according to claim 1, characterized in that Guide rails (16) are provided on both sides of the inner cavity at the upper end of the cabinet body (1), and correspondingly, sliding members (17) are provided on both sides of the top drawer (2) for guiding and cooperating with the guide rails (16).

6. The disinfection cabinet according to claim 1, characterized in that A heating pipe (14) is provided at the lower end of the inner cavity of the cabinet (1).

7. The disinfection cabinet according to claim 1, characterized in that An ultraviolet disinfection lamp (13) is provided at the lower end of the inner cavity of the cabinet (1).

8. The disinfection cabinet according to claim 1, characterized in that The thermal expansion temperature range of the first metal sheet and the second metal sheet is 60-120°C.

9. The disinfection cabinet according to claim 1, characterized in that The first metal sheet is located on the inner side of the second metal sheet.

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