Food fresh-keeping device

Abstract

The invention relates to a food fresh-keeping device. The food fresh-keeping device comprises a box body, a drawer, a weighing part, a negative ion generating device, a driving device and a spraying device, the drawer is slidably arranged at the bottom of the upper cavity of the box body, the first driving devices on the two sides are engaged with the drawer and the negative ion generating end, the generating end automatically retracts inwards to avoid during drawing, and the receiving end is rotationally buckled; the weighing part ascends and descends along with the drawer through a gear rack mechanism; the spraying device collects condensate water on the inner wall and atomizes and humidifies the condensate water; the fixing plate integrates a spectrum sensor, a humidity sensor and an illumination part, recognizes the food material type and is in linkage with the control unit to adjust the negative ion concentration and humidity. Opening and closing of the door body control on-off of high voltage through a reed switch, and safety is ensured. According to the device, the electrode collision risk is solved, food material storage and taking convenience, preservation parameter intelligentization and resource recycling are achieved, and the preservation efficiency and the user experience are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of food preservation, and in particular relates to a food preservation device. Background Art

[0002] In the field of food preservation, negative ion technology has attracted attention due to its ability to effectively inhibit microbial growth and delay oxidation. However, existing devices that use negative ions for food preservation generally have two key problems:

[0003] The conflict between energy consumption and diffusion efficiency: To effectively distribute negative ions within the storage space, existing technologies often rely on forced airflow from fans. This not only significantly increases power consumption, contradicting energy conservation trends, but more importantly, the airflow generated by the fans exacerbates the collision and annihilation of negative ions with air molecules (especially oxygen molecules), significantly reducing their effective concentration and active lifespan, and thus weakening their preservation effectiveness. Furthermore, the noise and vibration generated by the fans also impact the user experience and device lifespan.

[0004] Challenges in maintaining activity: The activity of negative ions in the environment is easily affected by humidity, temperature, and electric field stability. In low humidity environments, negative ions are more likely to become inactivated or annihilate with positive charges. Existing devices often lack precise control over the preservation microenvironment (particularly humidity), making it difficult to continuously maintain a high level of negative ion activity.

[0005] Therefore, there is an urgent need for a food preservation device that can achieve efficient, long-distance, and highly active diffusion of negative ions without fan-forced air supply and effectively maintain a fresh-keeping microenvironment, so as to solve the problems of high energy consumption, rapid activity decay, and unstable preservation effect. Summary of the Invention

[0006] The purpose of the present invention is to provide a food preservation device. To achieve the above purpose, the technical solution adopted by the present invention is:

[0007] A food preservation device comprises a box body, a drawer, a weighing component, a negative ion generating device, a first driving device, a second driving device and a spray device;

[0008] The negative ion generating device includes a generating end and a receiving end;

[0009] The box body includes an upper cavity, the drawer is slidably provided at the bottom of the upper cavity, the weighing component is provided in the drawer, a fixing plate is horizontally provided on the top of the drawer, the two ends of the fixing plate are connected to the two side walls of the upper cavity, and the two side walls are vertically arranged;

[0010] The two side walls are respectively provided with a first driving device, the two side walls are respectively provided with a generating end, and the two ends of the bottom of the fixed plate are respectively provided with a receiving end, and the first driving device engages the drawer, the generating end and the receiving end;

[0011] The second driving device is provided on both sides of the drawer, and the second driving device engages the weighing component;

[0012] The upper cavity further comprises an inner wall, which is vertically arranged and connected to the two side walls, and the spray device is provided on the inner wall; the weighing component and the spray device are electrically connected to a control unit.

[0013] Furthermore, the generating end includes a mounting plate, a transmitting head and a slider;

[0014] A plurality of the transmitter heads are arrayed along the third direction on the mounting plate, and the slider is fixedly provided on the bottom of the mounting plate;

[0015] The side wall is provided with a first groove near the bottom, the bottom of the first groove is provided with a sliding groove along the second direction, and the slider is slidably provided in the sliding groove.

[0016] Furthermore, the generating end further includes a first rack, and the first rack is fixedly provided on one side of the mounting plate along the second direction;

[0017] The first driving device includes a second rack, a first driving tooth, a driving rod, and a second driving tooth;

[0018] A second rack is fixedly provided at one end of each of the two sides of the drawer close to the inner wall along the third direction;

[0019] The side wall is provided with a second groove near the bottom, the driving rod is rotatably vertically provided in the second groove, one end of the driving rod passes through the top of the second groove and extends into the first groove, the first driving tooth is fixedly provided at the end of the driving rod located in the second groove, and the second driving tooth is fixedly provided at the middle of the end of the driving rod located in the first groove;

[0020] The first drive tooth engages the second rack, and the second drive tooth engages the first rack.

[0021] Furthermore, the receiving end includes a positive plate, a cylindrical mounting bar, a notched ring, a first magnet, a fixing ring, a connecting wire and a connecting tooth;

[0022] The fixing rings are symmetrically provided on one end of the inner wall on both sides of the bottom of the fixing plate, the connecting teeth are rotatably provided on the fixing rings, the connecting wire is passed through the axis of the connecting teeth, a plurality of the first magnets are arrayed along the axis circumference on one side of the connecting teeth, the side of the connecting teeth provided with the first magnet is fixedly connected to the notched ring cylinder, the columnar mounting bar is slidably provided in the notched ring cylinder, the positive plate is fixedly provided on the side wall of the columnar mounting bar, the columnar mounting bar is connected to the connecting wire and the first magnet, the other end of the connecting wire is connected to the box shell, and a plurality of holes are arrayed on the positive plate.

[0023] Furthermore, the first driving device further includes a first bevel gear, a connecting rod, a third driving gear and a second bevel gear;

[0024] The connecting rod is provided on one side wall of the first groove along the third direction, and the third driving tooth and the second bevel tooth are fixed on the connecting rod in sequence;

[0025] The driving rod is fixed with a first bevel gear on the top of one end thereof located in the first groove;

[0026] The first bevel teeth engage with the second bevel teeth, and the third driving teeth engage with the connecting teeth.

[0027] Furthermore, the second driving device includes a rotating drum, a gear 1 and a gear 2;

[0028] The drawer is symmetrically provided with openings near the middle on both sides, and the gear 2 is rotatably provided in the openings. The rotating drum is symmetrically rotatably provided on both sides of the top of the drawer, and the gear 1 is fixedly provided on the outside of the rotating drum, and the gear 1 is engaged with the gear 2.

[0029] Screws are symmetrically provided on both sides of the bottom of the weighing component, and an internal thread is provided in the rotating cylinder, and the screws are threadedly connected to the rotating cylinder;

[0030] A third rack is symmetrically provided at the bottom of the two side walls along the third direction, and the third rack is engaged with the second gear;

[0031] The weighing component is electrically connected to the control unit.

[0032] Furthermore, the spray device includes a water collection tank, a micro pump, a U-shaped tube and a sprayer connected in sequence;

[0033] A V-shaped plate is fixedly provided at the bottom of the inner wall, and the water collecting tank, the micro pump, the U-shaped tube and the sprayer are detachably provided on the V-shaped plate, and the water collecting tank is located at the lowest point of the V-shape;

[0034] Antifreeze is provided at the bottom of the U-shaped tube;

[0035] The micro pump and the sprayer are electrically connected to the control unit.

[0036] Furthermore, a recessed portion is provided at the center of the bottom of the fixing plate, and a spectrum sensor, a humidity sensor and a lighting component are detachably provided in the recessed portion;

[0037] The spectrum sensor, the humidity sensor and the lighting component are electrically connected to the control unit.

[0038] Furthermore, it also includes a door body, which is hinged on one end of one of the side walls away from the inner wall, and a reed switch is embedded in the middle of the other side wall. A sealing ring is provided on the side of the door body close to the upper cavity, and a second magnet is provided in the sealing ring. The second magnet is adapted to the reed switch, and the reed switch is electrically connected to the control unit.

[0039] Furthermore, the bottom of the drawer is provided with a plurality of sliding grooves along the third direction, the bottom of the upper cavity is fixed with a plurality of slide rails along the third direction, the sliding grooves are slidably matched with the slide rails, and a handle is provided at one end of the drawer away from the inner wall.

[0040] The present invention has the following beneficial effects: the device realizes automatic retraction and avoidance of the negative ion generating end and rotation and engagement of the receiving end through the drawer movement linkage drive mechanism, thereby preventing the electrode from colliding with the food; the weighing component automatically rises and falls as the drawer is pulled out, which is convenient for storage and retrieval; the integrated spectral sensor identifies the type of food, and dynamically adjusts the negative ion concentration and spray humidification based on the weight and humidity data to improve the preservation effect; the inner wall condensation water is used for circulating spray to save resources; the fanless electric field design reduces energy consumption, and the refrigerated area and the multi-layer fresh-keeping drawer are managed in zones, taking into account both multi-function and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a stereogram of the present invention;

[0042] Figure 2 It is a semi-cutaway perspective view of the present invention;

[0043] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0044] Figure 4 It is a semi-cutaway perspective view after removing some components;

[0045] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0046] Figure 6 This is an exploded view of the weighing unit, drawer, and second drive unit;

[0047] Figure 7It is a three-dimensional bottom view of the fixing plate and the receiving end;

[0048] Figure 8 It is a three-dimensional diagram of the spray device;

[0049] Figure 9 It is another perspective stereogram of the present invention.

[0050] Part Number:

[0051] Box body 1, fixed plate 101, recessed portion 1011, upper cavity 102, door body 103, sealing ring 104, inner wall 105, V-shaped plate 1051, slide rail 106, first groove 108, slider 1081, second groove 109, side wall 110;

[0052] Drawer 2, sliding groove 201, handle 202, opening 203, internal thread 204, rotating drum 205, gear 1 206, gear 2 207, third rack 208;

[0053] Weighing component 3, screw 301;

[0054] Negative ion generator 4, mounting plate 401, emission head 402, positive plate 403, cylindrical mounting bar 404, hole 405, notched ring 406, first magnet 407, fixing ring 408, connecting wire 409, connecting tooth 410;

[0055] First driving device 5, second rack 501, first driving tooth 502, driving rod 503, first rack 504, second driving tooth 505, first bevel gear 506, connecting rod 507, third driving tooth 508, second bevel gear 509;

[0056] Spray device 6, water collecting tank 601, micro pump 602, U-shaped tube 603, sprayer 604;

[0057] Reed switch 7 , second magnet 8 , spectrum sensor 9 , humidity sensor 10 , and illumination component 11 . DETAILED DESCRIPTION

[0058] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0059] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, 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 a limitation on the present invention.

[0060] like Figure 1-9 As shown, a food preservation device includes a box body 1, a drawer 2, a weighing component 3, a negative ion generating device 4, a first driving device 5, a second driving device and a spray device 6;

[0061] The negative ion generating device 4 includes a generating end and a receiving end; the box body 1 includes an upper cavity 102, the drawer 2 is slidably provided at the bottom of the upper cavity 102, the weighing component 3 is provided in the drawer 2, a fixed plate 101 is horizontally provided on the top of the drawer 2, the two ends of the fixed plate 101 are connected to the two side walls 110 of the upper cavity 102, and the two side walls 110 are vertically arranged; a first driving device 5 is respectively provided on the two side walls 110, and a generating end is respectively provided on the two side walls 110, and a receiving end is respectively provided at the two ends of the bottom of the fixed plate 101, the first driving device 5 engages the drawer 2, the generating end and the receiving end; the second driving device is provided on both sides of the drawer 2, and the second driving device engages the weighing component 3; the upper cavity 102 also includes an inner wall 105, the inner wall 105 is vertically arranged and connected to the two side walls 110, and the spray device 6 is provided on the inner wall 105; the weighing component 3 and the spray device 6 are electrically connected to the control unit. In actual operation, opening / closing the door 103 triggers the on / off switching of the reed switch 7. When opening, the control unit controls the high-voltage switch to disconnect (connected in series with the front stage of the high-voltage circuit of the transmitter head, instantly shutting off the power when the door is opened, and automatically switching to a safe 12V voltage when the door is opened (only to maintain the circuit in standby mode)). The negative ion generator 4 does not operate. When the door 103 is closed, the high-voltage switch is connected, and the negative ion generator 4 operates normally. When the drawer 2 is pulled outward, the first process: the first drive device 5 first contacts the second rack 501, driving the generating end to slide toward the inside of the first groove 108 and the receiving end to rotate toward the fixed plate 101, preventing the generating end and the receiving end from colliding with the food in the drawer 2. The second process: After the generating end and the receiving end have completely retracted, the second gear 207 and the third gear 208 engage, driving the second gear 207, the first gear 206, and the rotating drum 205 to rotate, and the weighing component 3 is lifted upward. When the drawer 2 reaches the outermost side, the weighing component 3 reaches its highest point, making it easier for the user to remove the food. When the drawer 2 slides inward, the weighing component 3 moves downward, the generating end expands outward, and the receiving end rotates to a vertical state.

[0062] like Figure 3 As shown, the generating end includes a mounting plate 401, a transmitting head 402 and a slider 1081; a plurality of transmitting heads 402 are arrayed along the third direction on the mounting plate 401, and the slider 1081 is fixedly provided at the bottom of the mounting plate 401; a first groove 108 is provided near the bottom of the side wall 110, and a slide groove 1081 is provided at the bottom of the first groove 108 along the second direction, and the slider 1081 is slidably provided in the slide groove 1081. The generating end also includes a first rack 504, and the first rack 504 is fixedly provided on one side of the mounting plate 401 along the second direction; the first driving device 5 includes a second rack 501, a first driving tooth 502, a driving rod 503, and a second driving tooth 505; a second rack 501 is fixedly provided on each end of the drawer 2 near the inner wall 105 along the third direction; a second groove 109 is provided near the bottom of the side wall 110, and the driving rod 503 is rotatably provided vertically in the second groove 109, one end of the driving rod 503 passes through the top of the second groove 109 and extends into the first groove 108, and the first driving tooth 502 is fixedly provided on one end of the driving rod 503 located in the second groove 109, and the second driving tooth 505 is fixedly provided in the middle of one end of the driving rod 503 located in the first groove 108; the first driving tooth 502 engages with the second rack 501, and the second driving tooth 505 engages with the first rack 504. When the drawer 2 moves outward, the second rack 501 moves synchronously, driving the first drive tooth 502 to rotate. When the first drive tooth 502 rotates, it drives the second drive tooth 505 to rotate synchronously. The second drive tooth 505 drives the first rack 504 (and the connected generating end) to move toward the inside of the first groove 108, thereby preventing the generating end from colliding with food during the ascending process of the weighing component 3. If the drawer 2 moves inward, the second rack 501 moves synchronously, driving the first drive tooth 502 to rotate in the opposite direction. When the first drive tooth 502 rotates, it drives the second drive tooth 505 to rotate in the opposite direction. The second drive tooth 505 drives the first rack 504 (and the connected generating end) to move toward the outside of the first groove 108, thereby facilitating the generated negative ions to contact the receiving end.

[0063] like Figure 3 、 5, 7, the receiving end includes a positive plate 403, a cylindrical mounting bar 404, a notched ring 406, a first magnet 407, a fixing ring 408, a connecting wire 409 and a connecting tooth 410; the fixing ring 408 is symmetrically provided on one end of the bottom of the fixing plate 101 close to the inner wall 105, and the connecting tooth 410 is rotatably provided on the fixing ring 408. The connecting wire 409 is passed through the axis of the connecting tooth 410, and there are several connecting teeth 410 on one side of the connecting tooth 410 along the circumference of the axis. The first magnet 407 and the connecting tooth 410 are provided with the notched ring tube 406 fixedly connected to one side of the first magnet 407, the cylindrical mounting bar 404 is slidably provided in the notched ring tube 406, the positive plate 403 is fixedly provided on the side wall of the cylindrical mounting bar 404, the cylindrical mounting bar 404 is connected to the connecting wire 409 and the first magnet 407, the other end of the connecting wire 409 is connected to the outer shell of the box 1, and a plurality of holes 405 are arrayed on the positive plate 403. The positive plate 403, the cylindrical mounting bar 404 and the notched ring tube 406 are all made of iron or conductive magnetic materials, wherein the opening rate of the positive plate 403 is 78%, and the aperture of the hole 405 is 0.5 mm. The notched ring tube 406 is as shown in FIG. Figure 7 As shown, its inner diameter is adapted to the diameter of the cylindrical mounting bar 404, and the cylindrical mounting bar 404 can slide therein and is adsorbed on the connecting tooth 410 by the first magnet 407. The connecting wire 409 is connected to the cylindrical mounting bar 404. The connecting wire 409 connects to the outer shell of the connecting box 1 to make the positive plate 403 at the zero potential point (the box 1 is grounded). Therefore, there is an electric potential difference between the positive plate 403 and the generating end. After the negative ions are generated, they are accelerated toward the positive plate 403 by the electric field, continue to diffuse through the holes 405 of the positive plate 403, and come into contact with the food to preserve it. In this embodiment, the distance between the transmitter head 402 and the positive plate 403 is 5mm, the electric field strength is maintained at 9kV / cm (the voltage is maintained at -4.5kV, -4.5kV / 5mm=9kV / cm), and the ion mobility is 0.8cm 2 / (V·s) (high-speed diffusion, can diffuse up to 1m away), which can completely cover the space inside drawer 2. By optimizing the electrode spacing between the transmitter head 402 and the positive plate 403, fanless airflow is achieved, while saving power consumption.

[0064] In addition, if Figure 3, as shown, the first driving device 5 also includes a first bevel tooth 506, a connecting rod 507, a third driving tooth 508 and a second bevel tooth 509; the connecting rod 507 is rotatably provided on one side wall of the first groove 108 along the third direction, and the third driving tooth 508 and the second bevel tooth 509 are fixed in sequence on the connecting rod 507; the driving rod 503 is located at the top of one end of the first groove 108 and is fixed with the first bevel tooth 506; the first bevel tooth 506 engages with the second bevel tooth 509, and the third driving tooth 508 engages with the connecting tooth 410. As the second rack 501 slides inward / outward, it drives the first bevel gear 506, the connecting rod 507, the third drive gear 508 and the second bevel gear 509; the rotation of the third drive gear 508 drives the connecting gear 410 to rotate, thereby driving the positive plate 403 to rotate. When the drawer 2 moves outward, the positive plate 403 engages inward to prevent the positive plate 403 from colliding with food. When the drawer 2 moves inward, the positive plate 403 unfolds and is perpendicular to the emission head 402 to facilitate the diffusion of negative ions in the electric field.

[0065] like Figure 6As shown, the second driving device includes a rotating drum 205, a gear 1 206 and a gear 2 207; openings 203 are symmetrically provided on both sides of the drawer 2 near the middle, and the gear 2 207 is rotatably provided in the opening 203; the rotating drum 205 is symmetrically rotatably provided on both sides of the top of the drawer 2, and the gear 1 206 is fixedly provided on the outside of the rotating drum 205, and the gear 1 206 is engaged with the gear 2 207; screws 301 are symmetrically provided on both sides of the bottom of the weighing component 3, an internal thread 204 is provided in the rotating drum 205, and the screw 301 is threadedly connected to the rotating drum 205; third racks 208 are symmetrically provided on the bottom of the two side walls 110 along the third direction, and the third rack 208 is engaged with the gear 2 207; the weighing component 3 is electrically connected to the control unit. Since the screw 301 does not rotate during the rotation of the drum 205, the relative rotation between the screw 301 and the drum 205 forces the screw 301 to move upward (moving the drawer 2 outward) or downward (moving the drawer 2 inward), thereby raising or lowering the weighing element 3. In practice, the use of two drums 205, screw 301, and third rack 208 provides higher precision in the operation of the drawer 2. If the drawer 2 is slightly offset, causing the second drive devices at both ends to move out of sync, this can cause a jam, rendering the drawer 2 unable to move. Therefore, as an optimization, only one side of the second drive device and third rack 208 can be provided. However, in this case, the weighing element 3 must be sized to fit the drawer 2 to prevent its rotation from failing to achieve the desired lifting effect. Raising is for convenient access to food, while lowering is for storage. The weighing element 3 measures the weight of the food and transmits it to the control unit. The control unit uses the weight of the food to determine the power of the transmitter head 402, i.e., the negative ion concentration, to achieve better freshness preservation.

[0066] like Figure 4 、 8As shown, the spray device 6 includes a water collecting tank 601, a micro pump 602, a U-shaped tube 603 and a sprayer 604 connected in sequence; a V-shaped plate 1051 is fixedly provided at the bottom of the inner wall 105, and the water collecting tank 601, the micro pump 602, the U-shaped tube 603 and the sprayer 604 are detachably provided on the V-shaped plate 1051, and the water collecting tank 601 is located at the lowest point of the V shape; antifreeze is provided at the bottom of the U-shaped tube 603; the micro pump 602 and the sprayer 604 are electrically connected to the control unit. During the operation of the device, there may be insufficient humidity. Insufficient humidity will affect the preservation effect and the activity of negative ions. Therefore, the humidity needs to be supplemented. The V-shaped plate 1051 will collect the condensed water inside (because the heat exchange inner wall 105 will condense water droplets, and the water droplets will slide down the V-shaped plate 1051 to the water collection tank 601). The internal humidity can be monitored by the humidity sensor 10. When the humidity is insufficient, the spray device 6 sprays water to maintain the humidity above 85%. The sprayer 604 can use piezoelectric ceramics (frequency 108kHz) to maintain the water mist particle size at 50-60nm. Antifreeze is set at the bend of the U-shaped tube 603 (it is not completely filled to 40% of the volume of the bend, and the upper part of the U-shaped bend is vacant for water to pass through). The antifreeze can be a propylene glycol solution. Antifreeze (propylene glycol solution, density 1.04g / cm 3 ), condensed water (density 1.0g / cm 3 ), the two naturally separate into layers, and the antifreeze sinks to the bottom without mixing. The viscosity of the antifreeze is ≥35 cP (at 25°C), forming a viscous barrier with the water layer and preventing it from moving with the water flow. The outer layer of the spray device 6 can also be covered with an insulating layer to prevent the water from freezing. In addition, the water collection tank 601 can be connected to an external water source, and a liquid level gauge is set inside the water collection tank 601 to determine whether water needs to be replenished from an external water source (if the water level is below a certain level, the water inside the water collection tank 601 is replenished from an external water source).

[0067] like Figure 7 As shown, a recessed portion 1011 is provided at the bottom center of the fixing plate 101. A spectral sensor 9, a humidity sensor 10, and a lighting component 11 are removably mounted within the recessed portion 1011. The spectral sensor 9, the humidity sensor 10, and the lighting component 11 are electrically connected to the control unit. The spectral sensor 9 can identify the type of vegetable by recognizing its spectral type, thereby controlling the control unit to control different lighting conditions to promote photosynthesis for preservation (fresh fruits and vegetables continue to photosynthesize for a period of time after being picked, and promoting photosynthesis can delay decay and thus achieve the desired effect). Furthermore, the control unit can adjust the negative ion concentration based on the vegetable type.

[0068] like Figure 1As shown, it also includes a door body 103, the door body 103 is hinged to one end of one of the side walls 110 away from the inner wall 105, and a reed switch 7 is embedded in the middle of the other side wall 110. A sealing ring 104 is provided on the side of the door body 103 close to the upper cavity 102, and a second magnet 8 is provided in the sealing ring 104. The second magnet 8 is adapted to the reed switch 7, and the reed switch 7 is electrically connected to the control unit. The second magnet 8 can be moved closer to or closer to the reed switch 7 to realize its on and off. The control unit judges whether to open or close the door based on the on and off of the reed switch 7, and then judges whether the negative ion generator 4 and the spray device 6 need to work and the voltage maintenance status of the circuits of the two.

[0069] In addition, several sliding grooves 201 are provided at the bottom of the drawer 2 along the third direction, and several sliding rails 106 are fixedly provided at the bottom of the upper cavity 102 along the third direction. The sliding grooves 201 slide in conjunction with the sliding rails 106, and a handle 202 is provided at the end of the drawer 2 away from the inner wall 105.

[0070] It should be noted that the upper part of the device is a fresh-keeping area, and a refrigerated area is set at the bottom. The area inside the lower area door 107 is the refrigerated area. The refrigerated area is a meat storage area and does not require lighting, spraying, etc. (such as Figure 9 As shown), it is only necessary to set the negative ion generating device 4, and its setting method is consistent with the fresh-keeping area. At the same time, the drawer 2 of the fresh-keeping area can be set multiple from top to bottom, and other devices are also set accordingly.

[0071] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various deformations, modifications, and substitutions made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A food preservation device, characterized in that: It comprises a box (1), a drawer (2), a weighing component (3), a negative ion generating device (4), a first driving device (5), a second driving device and a spraying device (6); The negative ion generating device (4) comprises a generating end and a receiving end; The box (1) comprises an upper cavity (102), the drawer (2) is slidably provided at the bottom of the upper cavity (102), the weighing component (3) is provided in the drawer (2), a fixing plate (101) is horizontally provided at the top of the drawer (2), the two ends of the fixing plate (101) are connected to the two side walls (110) of the upper cavity (102), and the two side walls (110) are vertically arranged; The two side walls (110) are respectively provided with a first driving device (5), the two side walls (110) are respectively provided with a generating end, and the two ends of the bottom of the fixing plate (101) are respectively provided with a receiving end, and the first driving device (5) engages the drawer (2), the generating end and the receiving end; The second driving device is provided on both sides of the drawer (2), and the second driving device engages with the weighing component (3); The upper cavity (102) further comprises an inner wall (105), the inner wall (105) being vertically arranged and connected to the two side walls (110), the spray device (6) being provided on the inner wall (105); the weighing component (3) and the spray device (6) being electrically connected to a control unit.

2. A food preservation device according to claim 1, characterized in that: The generating end comprises a mounting plate (401), a transmitting head (402) and a slider (1081); A plurality of the transmitting heads (402) are arrayed along a third direction on the mounting plate (401), and the slider (1081) is fixedly provided at the bottom of the mounting plate (401); The side wall (110) is provided with a first groove (108) near the bottom, and a sliding groove (1081) is provided at the bottom of the first groove (108) along the second direction, and the slider (1081) is slidably provided in the sliding groove (1081).

3. A food preservation device according to claim 2, characterized in that: The generating end further comprises a first rack (504), and the first rack (504) is fixedly provided on one side of the mounting plate (401) along the second direction; The first driving device (5) comprises a second rack (501), a first driving tooth (502), a driving rod (503), and a second driving tooth (505); A second rack (501) is fixedly provided at one end of each side of the drawer (2) close to the inner wall (105) along the third direction; The side wall (110) is provided with a second groove (109) near the bottom, and the driving rod (503) is rotatably vertically provided in the second groove (109), one end of the driving rod (503) passes through the top of the second groove (109) and extends into the first groove (108), and the first driving tooth (502) is fixedly provided at one end of the driving rod (503) located in the second groove (109), and the second driving tooth (505) is fixedly provided at the middle of one end of the driving rod (503) located in the first groove (108); The first drive tooth (502) engages with the second rack (501), and the second drive tooth (505) engages with the first rack (504).

4. A food preservation device according to claim 3, characterized in that: The receiving end includes a positive plate (403), a columnar mounting bar (404), a notched ring cylinder (406), a first magnet (407), a fixing ring (408), a connecting wire (409) and a connecting tooth (410); The fixing rings (408) are symmetrically provided at one end of the bottom of the fixing plate (101) near the inner wall (105), and the connecting teeth (410) are rotatably provided on the fixing rings (408). The connecting wire (409) is passed through the axis of the connecting teeth (410). A plurality of the first magnets (407) are arrayed along the axis on one side of the connecting teeth (410). The connecting teeth (410) are provided with a fixed portion on one side of the first magnet (407). The notch ring cylinder (406) is connected, the columnar mounting bar (404) is slidably provided in the notch ring cylinder (406), the positive plate (403) is fixedly provided on the side wall of the columnar mounting bar (404), the columnar mounting bar (404) is connected to the connecting wire (409) and the first magnet (407), the other end of the connecting wire (409) is connected to the outer shell of the box (1), and a plurality of holes (405) are arrayed on the positive plate (403).

5. The food preservation device according to claim 4, characterized in that: The first driving device (5) further comprises a first bevel gear (506), a connecting rod (507), a third driving gear (508) and a second bevel gear (509); The connecting rod (507) is provided on one side wall of the first groove (108) along the third direction, and the third driving tooth (508) and the second bevel tooth (509) are fixedly provided on the connecting rod (507) in sequence; The driving rod (503) is located at the top of one end of the first groove (108) and is fixed with a first bevel tooth (506); The first bevel teeth (506) engage with the second bevel teeth (509), and the third driving teeth (508) engage with the connecting teeth (410).

6. The food preservation device according to claim 1, characterized in that: The second driving device includes a rotating drum (205), a gear 1 (206) and a gear 2 (207); The drawer (2) is symmetrically provided with openings (203) near the middle on both sides, and the gear 2 (207) is rotatably provided in the openings (203). The top of the drawer (2) is symmetrically provided with the rotating drum (205) on both sides, and the gear 1 (206) is fixedly provided on the outside of the rotating drum (205). The gear 1 (206) is engaged with the gear 2 (207). Screws (301) are symmetrically provided on both sides of the bottom of the weighing component (3), an internal thread (204) is provided in the rotating cylinder (205), and the screws (301) are threadedly connected to the rotating cylinder (205); A third rack (208) is symmetrically provided at the bottom of the two side walls (110) along the third direction, and the third rack (208) is engaged with the second gear (207); The weighing component (3) is electrically connected to the control unit.

7. The food preservation device according to claim 1, characterized in that: The spray device (6) comprises a water collecting tank (601), a micro pump (602), a U-shaped tube (603) and a sprayer (604) connected in sequence; A V-shaped plate (1051) is fixedly provided at the bottom of the inner wall (105), and the water collecting trough (601), the micro pump (602), the U-shaped tube (603) and the sprayer (604) are detachably provided on the V-shaped plate (1051), and the water collecting trough (601) is located at the lowest point of the V-shape; Antifreeze liquid is provided at the bottom of the U-shaped tube (603); The micro pump (602) and the sprayer (604) are electrically connected to the control unit.

8. The food preservation device according to claim 1, characterized in that: A recessed portion (1011) is provided at the center of the bottom of the fixing plate (101), and a spectrum sensor (9), a humidity sensor (10), and an illumination component (11) are detachably provided in the recessed portion (1011); The spectrum sensor (9), the humidity sensor (10) and the lighting component (11) are electrically connected to the control unit.

9. The food preservation device according to claim 1, characterized in that: It also includes a door body (103), wherein the door body (103) is hinged to one end of one of the side walls (110) away from the inner wall (105), and a reed switch (7) is embedded in the middle of the other side wall (110). A sealing ring (104) is provided on the side of the door body (103) close to the upper cavity (102), and a second magnet (8) is provided in the sealing ring (104). The second magnet (8) is adapted to the reed switch (7), and the reed switch (7) is electrically connected to the control unit.

10. The food preservation device according to claim 1, characterized in that: The bottom of the drawer (2) is provided with a plurality of sliding grooves (201) along the third direction, the bottom of the upper cavity (102) is fixedly provided with a plurality of slide rails (106) along the third direction, the sliding grooves (201) are slidably engaged with the slide rails (106), and a handle (202) is provided at one end of the drawer (2) away from the inner wall (105).

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