CN111642676A

CN111642676A - Food fresh-keeping device

Info

Publication number: CN111642676A
Application number: CN202010511818.5A
Authority: CN
Inventors: 尚冰冰; 刘杰; 郭宜鑫; 王海锋; 程强强
Original assignee: Anhui Dahui Biotechnology Co ltd
Current assignee: Anhui Dahui Biotechnology Co ltd
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2020-09-11

Abstract

The invention relates to a food fresh-keeping device, which comprises a cabinet, wherein a display groove for containing food is arranged at the upper end of the cabinet, the two ends of an upper opening of the display groove are sealed, an air outlet and an air return opening are respectively formed in the opposite groove walls of the display groove, a cold air mechanism for providing cold air to the air outlet is arranged in the cabinet, an air inlet end of the cold air mechanism is connected with the air return opening, an air outlet end of the cold air mechanism is connected with the air outlet through an air equalizing box, and the air equalizing box enables air outlet at each part of the air outlet to be uniform.

Description

Food fresh-keeping device

Technical Field

The invention relates to the field of preservation, in particular to a food preservation device.

Background

Food fresh-keeping makes essential content in our life, and various food fresh-keeping devices are also more, and wherein the fresh-keeping cabinet is more common, and the fresh-keeping cabinet on the market can divide into forced air cooling open-type fresh-keeping cabinet and direct cooling glass gate-type fresh-keeping cabinet, and its effect is through reducing the temperature, lets the inside bacterium of food activity speed that slows down, plays the effect of extension shelf life. The most common fresh-keeping cabinets in the market at present are cooked food fresh-keeping cabinets, fresh meat fresh-keeping cabinets, yogurt fresh-keeping cabinets and clean vegetable fresh-keeping cabinets.

The air-cooled open type fresh-keeping cabinets can be seen in supermarkets frequently, but the fresh-keeping cabinets have the problems that the air outlet of cold air is not uniform, the temperature of all positions in the fresh-keeping cabinets is different, dead corners which cannot keep fresh exist, and the current use requirements cannot be met.

Disclosure of Invention

The invention aims to provide a food fresh-keeping device, which has the advantages of uniform air outlet, good fresh-keeping effect and moisturizing and sterilizing effects.

The technical scheme adopted by the invention is as follows.

The utility model provides a food fresh-keeping device, includes the rack, and the rack upper end is equipped with the show groove that is used for holding food, and the upper end opening both ends of show groove are sealed, have seted up air outlet and return air inlet on the cell wall that the show groove is relative respectively, are equipped with in the rack to be used for providing cold wind mechanism of cold wind to the air outlet, and the air inlet end of cold wind mechanism is connected with the return air inlet, and the air-out end of cold wind mechanism is connected with the air outlet through equal bellows, and equal bellows makes the air-out.

Preferably: the lengths of the air outlet and the air return inlet are consistent with the length of the display groove.

Preferably: the length of the air equalizing box is consistent with that of the air outlet, the upper end of the air equalizing box is open and communicated with the air outlet, an air inlet is arranged at the midpoint of the lower end of the air equalizing box, air guide blocks used for dividing air and guiding the air to the two ends of the air equalizing box are mounted at the air inlet, vertical wind shields are arranged in the air equalizing box from the midpoint of the air equalizing box to the two ends at intervals, A-shaped air gaps are formed in the wind shields, and the area of the A-shaped air gaps on the wind shields from the middle point of the air equalizing box to one end of the air equalizing box is reduced.

Preferably: the bottom surface of the air equalizing box is composed of a plane A and a plane B, the plane A is obliquely arranged from the position of the air equalizing box to the upper side of one end of the air equalizing box, the plane B is obliquely arranged from the position of the air equalizing box to the upper side of the other end of the air equalizing box, and the inclination angles of the plane A and the plane B are consistent.

Preferably: the air guide block comprises two air guide surfaces, a plane which is vertical to the horizontal plane and vertical to the length direction of the air equalizing box is marked as an A plane, the middle point of an air inlet of the air equalizing box is positioned in the A plane, the plane which is vertical to the horizontal plane and the A plane is marked as a D plane, the two air guide surfaces are respectively arranged on two sides of the A plane and are symmetrically arranged, the lower ends of the two air guide surfaces are superposed, the upper ends of the two air guide surfaces are separated, and the projections of the two air guide surfaces in the B plane are two quarter arcs with.

Preferably: and a B air gap part for air outlet is arranged on the air guide block along the length direction of the air equalizing box.

Preferably: the groove wall where the air outlet is located is internally provided with a cavity, the length direction of the cavity is consistent with that of the air outlet, the upper end of the cavity is communicated with the air outlet, the lower end of the cavity is communicated with the air equalizing box, and the horizontal section of the cavity from bottom to top is gradually reduced.

Preferably: the negative ion generating assembly comprises a barrel, the upper end of the barrel is communicated with the air inlet, the lower end of the barrel is connected with a cold air mechanism through a pipeline, a barrel-shaped electrode and a needle-shaped electrode are mounted on the barrel, the barrel length direction of the barrel-shaped electrode is consistent with the barrel length direction of the barrel, the upper end and the lower end of the barrel-shaped electrode are open, the barrel-shaped electrode is mounted on the inner wall of the barrel through a support, and the needle-shaped electrode is arranged along the barrel length direction of the barrel-shaped electrode and is arranged on the center line of the barrel-shaped.

Preferably: the cabinet is also provided with a humidifying atomizer which is communicated with the lower end of the cylinder body through an electric control valve.

Preferably: the groove wall where the air return inlet is located is internally provided with an air collecting cavity, and the air collecting cavity is connected with a cold air mechanism through an air pipe.

Further: the height of the air outlet is higher than that of the air return inlet.

Further: the air outlet is internally provided with a movably arranged air deflector.

Further: the wind screen is arranged at the air return inlet, the length direction of the wind screen is consistent with that of the air return inlet, and the upper end of the wind screen is obliquely arranged towards the air outlet.

Further: the wind shields are rectangular flat members, two wind shields at the same length are arranged, and a gap A is enclosed between the side surfaces of the two wind shields and the bottom surface of the wind equalizing box.

Further: the surface of the wind shield is vertical to the bottom surface of the uniform wind box.

Further: the width of the B hollow part is 0.3-1 cm.

Further: the negative ion generating assembly further comprises a control module, and the control module is electrically connected with the needle electrode and the cylindrical electrode and used for controlling the needle electrode to discharge.

Further: the humidification atomizer comprises a humidification atomizer main body and a water tank, and a switch door is arranged at the corresponding position of the back of the cabinet and the water tank.

Further: the cold air mechanism comprises a fan, an evaporator is arranged at the air outlet end of the fan, the air inlet end of the fan is connected with the gas collecting cavity through a pipeline, and the evaporator is connected with the compressor assembly.

Further: a control box is arranged in the machine cabinet, and the control box is electrically connected with the humidifying atomizer, the cold air mechanism and the negative ion generating assembly.

The invention has the technical effects that: through the setting of air outlet and return air inlet, realize the fresh-keeping function of air feed in to the show groove to through return air inlet return air, realize the forced air cooling function of circulation, through the setting of cold wind mechanism, realize providing cold wind's function to the air outlet, through the setting of homobox, can make air outlet wind-force everywhere match, make the air-out even, effectual promotion fresh-keeping effect.

Through the length of air outlet and return air inlet and the unanimous setting of the groove length of show groove for the air outlet can both give the wind to each department in the show groove, makes each department in the show groove can both obtain cold wind, avoids appearing the problem at fresh-keeping dead angle, and the return air inlet also can be better more retrieve cold wind simultaneously.

Through the setting of air guide block, realize cutting apart into two parts with cold wind to guide the cold wind of these two parts respectively to the equalizing box both ends, setting through the deep bead, the wind that flows to the equalizing box both ends is kept off partly by deep bead at different levels, produces a series of wind direction changes such as backward flow vortex, and cold wind between the two adjacent deep beads is the walking that makes progress finally, realizes the function of equalizing the wind.

Through the setting of A plane and B plane tilt up, can guide cold wind upwards to walk to and form the cooperation between the deep bead, make to form backward flow, vortex etc. between two adjacent deep beads and the bottom surface, make cold wind sufficient in this region and upwards walk, realize the function of the direction of wind-sharing.

Through the setting of wind-guiding face for divide into two wind equally with the cold wind that gets into in the case of equaling, and can guide the cold wind of these two parts respectively to the both ends of case of equaling, realize cutting apart the effect of direction.

Through the setting of B vacancy portion, the problem that the wind guide block top is windless is avoided appearing for even bellows middle part also has cold wind, has realized that all places of even bellows total length all have cold wind, can guarantee the even air-out of air outlet.

Through the setting of cavity for cold wind lies in the chamber wall collision at the in-process that moves upward, realizes effects such as backward flow vortex, makes and also can play the effect of wind equalizing along the case width direction of equalizing, and the wind that the air outlet was gone out everywhere can both guarantee to be of equal size like this, realizes even air-out, has satisfied operation requirement.

The setting of subassembly takes place through the anion, the realization produces the anion, the anion can all the bacterium effect of killing, and negative oxygen ion wherein can also combine with the peculiar smell molecule, get rid of the peculiar smell, setting through tube-shape electrode and needle electrode, needle electrode high-voltage discharge, oxygen and hydrone in the electric power air, produce the anion, the setting of tube-shape electrode and needle electrode simultaneously, can not produce too big hindrance to the air current flow, the effect of subassembly at the equal bellows of cooperation is taken place to the anion, can realize that the anion evenly spreads everywhere to the show groove, the effectual effect of disinfecting and getting rid of the peculiar smell that has been brought into.

Through the setting of humidification atomizer, realize atomizing water, and through the barrel, can take place the subassembly for the anion and provide sufficient hydrone like this, can ionize out more anions, further promotion disinfection and sterilization and the effect of getting rid of the peculiar smell, simultaneously in the effect of the equal bellows of cooperation, can realize that the hydrone evenly spreads everywhere to the show groove, make food in the show groove can both wait to the humidification, the effectual humidity that has kept food, in this embodiment, the control button who is equipped with the humidification atomizer on the rack outer wall, convenient to operate and use.

Because the cold air flows downwards when no external force generally exists, the cold air can be conveniently recovered by the air return inlet.

The air outlet is internally provided with a movably arranged air deflector. Through the setting of aviation baffle, be convenient for adjust and control cold wind air-out direction.

Through the setting of windshield, be convenient for gather cold wind to the return air inlet, be convenient for the return air inlet to retrieve cold wind.

The wind shield of the rectangular flat plate-shaped member is arranged, so that the installation is convenient, and the realization is convenient.

Through the perpendicular setting of deep bead face and the bottom surface of the case of the equal wind, the cooperation of being convenient for between the two is full of cold wind backward flow disturbance in the region between adjacent deep bead and bottom surface, carries the equal wind effect to have the function of upwards drainage.

Through the width setting of B vacancy portion, can enough guarantee that air guide block upper end also has cold wind, also can guarantee that most cold wind can be by the equal wind box both ends of direction.

Through the arrangement of the control module, the needle-shaped electrode discharge is controlled and controlled conveniently.

The arrangement of the switch door is arranged at the corresponding position of the back of the cabinet and the water tank, so that water can be added into the water tank conveniently, and the use is convenient.

The air conditioner has the advantages of simple structure, reasonable layout and stable operation, can realize uniform air outlet, effectively improves the fresh-keeping effect, has the humidifying function, avoids the surface dehydration problem of food caused by long-time air cooling, and has the functions of sterilization, disinfection and odor elimination.

Drawings

Fig. 1 is a schematic structural diagram of a food fresh-keeping device according to the present invention.

Fig. 2 is a schematic structural view of an air return opening in the food fresh-keeping device provided by the invention.

Fig. 3 is a schematic structural diagram of the interior of a cabinet in the food preservation device provided by the invention.

Fig. 4 is a schematic structural diagram of a wind equalizing box in the food fresh-keeping device according to the present invention.

Fig. 5 is a schematic structural diagram of the inside of a wind equalizing box in the food fresh-keeping device according to the present invention.

Fig. 6 is a schematic structural view of an air guide block in the food fresh-keeping device according to the present invention.

Fig. 7 is a schematic structural diagram of an anion generating assembly in the food fresh-keeping device according to the present invention.

The corresponding relation of all the reference numbers is as follows: 100-cabinet, 200-display groove, 210-air outlet, 211-cavity, 220-air return inlet, 221-air collecting cavity, 300-air equalizing groove, 310-air inlet, 320-air guide block, 321 air guide surface, 322-B air gap part, 330-air baffle, 331-A air gap part, 340-A plane, 350-B plane, 400-anion generating component, 410-cylinder, 420-cylinder electrode, 430-needle electrode, 440-control module, 500-humidification atomizer, 510-electromagnetic valve and 600-cold air mechanism.

Detailed Description

In order that the objects and advantages of the invention will be more clearly understood, the invention will now be described in detail with reference to the following examples. It is to be understood that the following text is merely illustrative of one or more specific embodiments of the invention and does not strictly limit the scope of the invention as specifically claimed.

Example 1

Referring to fig. 1 to 7, in the present embodiment, a food fresh-keeping apparatus is provided, including a cabinet 100, a display slot 200 for holding food is installed at an upper end of the cabinet 100, an upper end opening of the display slot 200 is closed at both ends, an air outlet 210 and an air return 220 are respectively formed on opposite slot walls of the display slot 200, a cold air mechanism 600 for providing cold air to the air outlet 210 is installed in the cabinet 100, an air inlet end of the cold air mechanism 600 is connected to the air return 220, an air outlet end of the cold air mechanism 600 is connected to the air outlet through an air equalizing box 300, and the air equalizing box 300 makes air outlet at each position of the air outlet 210 uniform.

Through the setting of air outlet 210 and return air inlet 220, realize the fresh-keeping function of air feed in to show groove 200 to through return air inlet 220 return air, realize the forced air cooling function of circulation, through the setting of cold wind mechanism 600, realize providing cold wind's function to air outlet 210, through the setting of equal bellows 300, can make air outlet wind-force everywhere equal, make the air-out even, effectual promotion fresh-keeping effect.

The length of the air outlet 210 and the air return opening 220 is the same as the length of the display slot.

Through the length of air outlet 210 and return air inlet 220 and the unanimous setting of the groove length of show groove for air outlet 210 can both give the wind to each department in the show groove 200, makes each department in the show groove can both obtain cold wind, avoids appearing the problem at fresh-keeping dead angle, and return air inlet 220 also can be better more retrieve cold wind simultaneously.

The length of air box 300 is the same as the length of air outlet 210, the upper end of air box 300 is open and is communicated with air outlet 210, air inlet 310 is arranged at the midpoint position of the lower end of air box 300, air guide blocks 320 for dividing air and guiding the air to the two ends of air box 300 are installed at air inlet 310, vertical wind shields 330 are arranged at intervals in the air box 300 from the midpoint position to the two ends, an A vacancy 331 is formed in wind shield 300, and the area of A vacancy 331 on each wind shield 300 from the midpoint position of air box 300 to the one end is reduced.

Through the setting of air guide block 320, realize cutting apart into two parts with cold wind to guide the cold wind of these two parts respectively to the equal bellows 300 both ends, through the setting of deep bead 330, the wind that flows to the equal bellows 300 both ends is kept off a part by deep bead 330 at different levels, produces a series of wind direction changes such as backward flow vortex, and the cold wind between two adjacent deep beads 330 is last upwards walked, realizes the function of equal wind.

The bottom surface of the air equalizing box 300 is constituted by an A plane 340 and a B plane 350, the A plane 340 is inclined from the midpoint position of the air equalizing box 300 to the upper side of one end thereof, the B plane 350 is inclined from the midpoint position of the air equalizing box 300 to the upper side of the other end thereof, and the inclination angles of the A plane 340 and the B plane 350 are the same.

Through the setting of A plane 340 and B plane 350 tilt up, can guide cold wind upwards to walk to form the cooperation between with deep bead 330, make and form backward flow, vortex etc. between two adjacent deep bead 330 and the bottom surface, make cold wind full of and upwards walk in this region, realize the function of equal wind direction.

The air guide block 320 comprises two air guide surfaces 321, a plane perpendicular to the horizontal plane and perpendicular to the length direction of the air equalizing box 300 is marked as an A plane, the middle point of an air inlet of the air equalizing box 300 is located in the A plane, a plane perpendicular to the horizontal plane and the A plane is marked as a D plane, the two air guide surfaces 321 are respectively arranged on two sides of the A plane and are symmetrically arranged, the lower ends of the two air guide surfaces 321 are overlapped, the upper ends of the two air guide surfaces 321 are separated, and the projections of the two air guide surfaces 321 in the B plane are two quarter arcs with the lower ends connected.

Through the setting of wind-guiding face 321 for divide cold wind that gets into in the case 300 equally into two wind, and can guide the cold wind of these two parts respectively to the both ends of case 300, realize cutting apart the effect of direction.

The air guide block 320 is provided with a B-shaped gap 322 for air outlet along the length direction of the air equalizing box 300.

Through the setting of B vacancy portion 322, the problem of the windless top of air guide block 320 is avoided appearing for even bellows 300 middle part also has cold wind, has realized that all places of even bellows 300 total length all have cold wind, can guarantee the even air-out of air outlet 210.

The cell wall at air outlet 210 place has seted up cavity 211 in, and cavity 211 length direction is unanimous with air outlet 210 length direction, and cavity 211 upper end and air outlet 210 intercommunication, lower extreme and wind-equalizing box 300 intercommunication, the horizontal cross-section of cavity 211 from the bottom up reduces gradually.

Through the setting of cavity 211 for cold wind is in the wall collision of the in-process that goes upward, realizes effects such as backward flow vortex, makes and also can play the effect of wind-sharing along wind-sharing case 300 width direction, and the wind each department that air outlet 210 goes out can both guarantee to be of equal size like this, realizes even air-out, has satisfied operation requirement.

The negative ion generating assembly 400 is installed at the air inlet 310 at the lower end of the air equalizing box 300, the negative ion generating assembly 400 comprises a cylinder body 410, the upper end of the cylinder body 410 is communicated with the air inlet 310, the lower end of the cylinder body 410 is connected with the cold air mechanism 600 through a pipeline, the cylinder body 410 is provided with a cylindrical electrode 420 and a needle electrode 430, the cylinder length direction of the cylindrical electrode 420 is consistent with the cylinder length direction of the cylinder body 410, the upper end and the lower end of the cylindrical electrode 420 are open, the cylindrical electrode 420 is installed on the inner wall of the cylinder body 410 through a support, and the needle electrode 430 is arranged along the cylinder length direction of the cylindrical electrode.

Set up through the anion generation subassembly 400, realize producing the anion, the anion can all the bacterium effect of killing, and negative oxygen ion wherein can also combine with the peculiar smell molecule, get rid of the peculiar smell, setting through tube-shape electrode 420 and needle electrode 430, needle electrode 430 high-voltage discharge, oxygen and hydrone in the electric power air, produce the anion, tube-shape electrode 420 and needle electrode 430's setting simultaneously, can not produce too big hindrance to the air current flow, the anion generation subassembly 400 is in the effect of the equal bellows 300 of cooperation, can realize that the anion evenly spreads to show groove 200 everywhere, the effectual effect of disinfecting and getting rid of the peculiar smell that has brought.

The cabinet 100 is also provided with a humidifying atomizer 500, and the humidifying atomizer 500 is communicated with the lower end of the cylinder 410 through an electric control valve 510.

Through humidification atomizer 500's setting, realize atomizing water, and through the barrel, can take place subassembly 400 for the anion and provide sufficient hydrone like this, can ionize out more anions, further promotion disinfection and sterilization and the effect of getting rid of the peculiar smell, simultaneously at the effect of cooperation uniform air box 300, can realize that the hydrone evenly spreads the show groove 200 each department, make the food in the show groove 200 can both wait for the humidification, the effectual humidity that has kept food, in this embodiment, be equipped with humidification atomizer 500's control button on the rack 100 outer wall, and convenient for operation and use.

The wall of the groove where the air return inlet 220 is located is provided with an air collecting cavity 221, and the air collecting cavity 221 is connected with the cold air mechanism 600 through an air pipe.

The height of the air outlet 210 is higher than that of the air return opening 220.

Since the cold air generally flows downward without external force, the return air inlet 220 is convenient to recover the cold air.

An air deflector is movably arranged in the air outlet 210.

Through the setting of aviation baffle, be convenient for adjust and control cold wind air-out direction.

The air return opening 220 is provided with a windshield, the length direction of the windshield is consistent with that of the air return opening 220, and the upper end of the windshield is obliquely arranged towards the air outlet 210.

Through the setting of windshield, be convenient for gather the return air inlet 220 with cold wind, be convenient for return air inlet 220 retrieves cold wind.

The wind deflectors 330 are rectangular flat plate-shaped members, two wind deflectors 330 at the same length are arranged, and a gap A is enclosed between the side surfaces of the two wind deflectors 330 and the bottom surface of the wind-equalizing box 300.

The surface of the wind deflector 330 is perpendicular to the bottom surface of the wind equalizing box 300.

Through the setting of deep bead 330 face and wind case 300 bottom surface vertically, the cooperation of being convenient for between the two is with cold wind backward flow disturbance, full in the region between adjacent deep bead 330 and bottom surface, carries into the effect of wind of equalling, and has the function of drainage upwards.

The width of the B hollow part 322 is 0.3-1 cm.

Through the width setting of B vacancy portion 322, can enough guarantee that air guide block 320 upper end also has cold wind, also can guarantee that most cold wind can be by the equal bellows 300 both ends of direction.

The negative ion generating assembly 400 further includes a control module 440, wherein the control module 440 is electrically connected to the needle electrode 130 and the cylindrical electrode 120 for controlling the needle electrode 130 to discharge.

The control of the discharge of the needle electrode 130 is facilitated by the provision of the control module 440.

The humidifying atomizer 500 includes a humidifying atomizer main body and a water tank, and a switch door is installed at a position corresponding to the water tank on the back of the cabinet 100.

The arrangement of the switch door is arranged at the corresponding position of the back of the cabinet 100 and the water tank, so that water can be conveniently added into the water tank of the cabinet, and the use is convenient.

The cold air mechanism 600 includes a blower, an evaporator is installed at an air outlet end of the blower, an air inlet end of the blower is connected with the gas collecting chamber 221 through a pipeline, and the evaporator is connected with the compressor assembly.

A control box is arranged in the cabinet 100, and the control box is electrically connected with the humidifying atomizer, the cold air mechanism and the negative ion generating assembly.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.

Claims

1. A food fresh-keeping device comprises a cabinet (100), wherein a display groove (200) for containing food is arranged at the upper end of the cabinet (100), and the food fresh-keeping device is characterized in that: the upper end opening both ends of show groove (200) are sealed, have seted up air outlet (210) and return air inlet (220) on the cell wall that show groove (200) are relative respectively, are equipped with in rack (100) and are used for providing cold wind mechanism (600) to air outlet (210), and the air inlet end of cold wind mechanism (600) is connected with return air inlet (220), and the air-out end of cold wind mechanism (600) is connected with the air outlet through equal bellows (300), and equal bellows (300) make air-out everywhere of air outlet (210) even.

2. The food preservation apparatus according to claim 1, characterized in that: the lengths of the air outlet (210) and the air return opening (220) are consistent with the length of the display groove.

3. The food preservation apparatus according to claim 2, characterized in that: the length of equal bellows (300) is unanimous with the length of air outlet (210), equal bellows (300) upper end opening and with air outlet (210) intercommunication, equal bellows (300) lower extreme midpoint position is provided with air inlet (310), air inlet (310) department installs and is used for cutting apart wind and leads air guide block (320) at equal bellows (300) both ends, equal interval arrangement has wind board (330) that the form set up immediately to both ends direction from its midpoint position in equal bellows (300), A vacancy portion (331) have been seted up on wind board (300), A vacancy portion (331) area on each wind board (300) of its one end direction from equal bellows (300) midpoint position reduces in equal amount.

4. The food preservation apparatus according to claim 3, characterized in that: the bottom surface of the air equalizing box (300) is composed of an A plane (340) and a B plane (350), the A plane (340) is obliquely arranged from the midpoint position of the air equalizing box (300) to the upper side of one end of the air equalizing box, the B plane (350) is obliquely arranged from the midpoint position of the air equalizing box (300) to the upper side of the other end of the air equalizing box, and the oblique angles of the A plane (340) and the B plane (350) are consistent.

5. The food preservation apparatus according to claim 4, characterized in that: the air guide block (320) comprises two air guide surfaces (321), a plane which is perpendicular to the horizontal plane and perpendicular to the length direction of the air equalizing box (300) is marked as an A plane, the middle point of an air inlet of the air equalizing box (300) is located in the A plane, the plane which is perpendicular to the horizontal plane and the A plane is marked as a D plane, the two air guide surfaces (321) are respectively arranged on two sides of the A plane and are symmetrically arranged, the lower ends of the two air guide surfaces (321) are overlapped, the upper ends of the two air guide surfaces are separated, and the projections of the two air guide surfaces (321) in the B plane are two quarter arcs with the lower.

6. The food preservation apparatus according to claim 5, characterized in that: and a B vacancy part (322) for air outlet is arranged on the air guide block (320) along the length direction of the air equalizing box (300).

7. The food preservation apparatus according to claim 6, characterized in that: the utility model discloses a wind-proof structure, including air outlet (210), cavity (211) are seted up in the cell wall at air outlet (210) place, and cavity (211) length direction is unanimous with air outlet (210) length direction, and cavity (211) upper end and air outlet (210) intercommunication, lower extreme and equal bellows (300) intercommunication, the horizontal cross-section of cavity (211) from the bottom up reduces gradually.

8. The food preservation apparatus according to claim 7, characterized in that: the negative ion generator is characterized in that a negative ion generating assembly (400) is arranged at an air inlet (310) at the lower end of the air equalizing box (300), the negative ion generating assembly (400) comprises a cylinder body (410), the upper end of the cylinder body (410) is communicated with the air inlet (310), the lower end of the cylinder body (410) is connected with a cold air mechanism (600) through a pipeline, a cylindrical electrode (420) and a needle electrode (430) are arranged on the cylinder body (410), the cylinder length direction of the cylindrical electrode (420) is consistent with the cylinder length direction of the cylinder body (410), the upper end and the lower end of the cylindrical electrode (420) are opened, the cylindrical electrode (420) is arranged on the inner wall of the cylinder body (410) through a support, and the needle electrode (430) is arranged along the cylinder length direction of the.

9. The food preservation apparatus according to claim 8, characterized in that: the cabinet (100) is also internally provided with a humidifying atomizer (500), and the humidifying atomizer (500) is communicated with the lower end of the cylinder (410) through an electric control valve (510).

10. The food preservation apparatus according to claim 9, characterized in that: and a gas collecting cavity (221) is formed in the groove wall where the air return opening (220) is located, and the gas collecting cavity (221) is connected with a cold air mechanism (600) through an air pipe.