CN209840501U

CN209840501U - Sealed negative pressure freezer

Info

Publication number: CN209840501U
Application number: CN201920564000.2U
Authority: CN
Inventors: 干鲁铭; 干国良
Original assignee: Shaoxing Huabao Refrigeration Equipment Co Ltd
Current assignee: Shaoxing Huabao Refrigeration Equipment Co Ltd
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2019-12-24
Anticipated expiration: 2029-04-23

Abstract

The utility model relates to a sealed negative pressure freezer relates to refrigeration plant's technical field, and it includes the storehouse body, sets up at the internal refrigeration mechanism in storehouse, sets up the sealing mechanism in storehouse body entrance to and be used for making negative pressure environment's negative pressure mechanism at the internal storehouse with the storehouse body coupling, sealing mechanism including the lid establish the sealing door on the entry, set up the gas holder in the sealing door, the directional setting of sliding piston in the gas holder, pass gas holder end wall and with piston threaded connection's screw rod, drive screw rod pivoted driving piece to and set up the gasbag in one side that sealing door is relative with the entry border, the screw rod is connected with gas holder rotation, the gasbag encircles sealing door circumference and sets up, the gasbag is kept away from the one end intercommunication of screw rod with the gas holder, just after the gasbag is bloated with entry border butt. The utility model discloses have the effect in order to improve energy utilization's of the leakage that reduces air conditioning.

Description

Sealed negative pressure freezer

Technical Field

The utility model belongs to the technical field of refrigeration plant's technique and specifically relates to a sealed negative pressure freezer is related to.

Background

At present, the cold storage is mainly used as constant temperature storage cold air equipment for food, dairy products, meat, aquatic products, chemical industry, medicine, seedling raising, scientific experiment and the like, and the cold storage is actually a low temperature cold storage (cold storage) and also belongs to a refrigeration device, compared with a refrigerator, the refrigeration area of the cold storage is much larger, but the cold storage has a communicated refrigeration principle.

The refrigeration house needs to be kept sealed, so that the circulation of air is reduced to avoid the gas such as oxygen and the like to accelerate the deterioration of food, and meanwhile, the leakage of cold air is reduced, and the energy consumption is reduced. The existing refrigeration house sealing structure is usually that a sealing rubber strip is arranged around a door body, the sealing performance of the door body is improved through the sealing rubber strip, the leakage of cold air is reduced, and the refrigeration effect is improved.

The above prior art solutions have the following drawbacks: when closing the cold storage door, because joint strip extrusion deformation leads to the adhesive tape contact not inseparable enough, can not laminate completely, has the gap for cold air leaks, causes the energy waste.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sealed negative pressure freezer reduces the leakage of air conditioning, improves energy utilization.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a sealed negative pressure freezer, includes the storehouse body, sets up at the internal refrigeration mechanism in storehouse, sets up the sealing mechanism at storehouse body entrance to and with the connected negative pressure mechanism who is used for making negative pressure environment in the storehouse body of storehouse, sealing mechanism including the lid establish the sealing door on the entry, set up gas holder in the sealing door, the directional piston that slides and set up in the gas holder, pass the gas holder end wall and with piston threaded connection's screw rod, drive screw rod pivoted driving piece to and set up the gasbag in one side that sealing door and entry border are relative, the screw rod is connected with the gas holder rotation, the gasbag encircles sealing door circumference and sets up, the gasbag is kept away from the one end intercommunication of screw rod with the gas holder, just after the gasbag has been bloated with entry border butt.

By adopting the technical scheme, the refrigerating mechanism reduces the temperature of articles in the bin body, the negative pressure mechanism extracts gas in the bin body, removes oxygen and other gases which shorten the food preservation time, and then fills partial nitrogen to balance the air pressure, so that the air pressure in the bin body is lower than the outside, and the temperature rise caused by the air pressure rise is reduced; the driving piece drives the screw rod to rotate, the screw rod drives the piston to slide in the air storage tank when rotating, so that the air is blown into the air bag, the capacity of the air bag is increased, and therefore, gaps between the sealing door and the edge of the inlet are reduced, the leakage of cold air is reduced, the loss of cold energy is reduced, and the energy utilization rate is improved; meanwhile, the gas which shortens the food preservation time, such as external oxygen, is reduced, and the preservation time of the food and the like is prolonged.

The utility model discloses further set up to: the sealing door is provided with a transmission assembly, the transmission assembly comprises a guide rail, transmission wheels and a transmission belt, the guide rail is arranged on the outer wall of the bin body and used for the sealing door to slide, the transmission wheels are rotatably arranged at two ends of the guide rail, the transmission belt is sleeved on the transmission wheels, the transmission belt is arranged on the guide rail and used for driving the transmission wheels to rotate, and the transmission belt is connected with the sealing door.

Through adopting above-mentioned technical scheme, the drive wheel of drive unit drive rotates, and the drive wheel drives the transmission belt transmission to this drives the sealing door and slides along the guide rail, makes the entry of the sealed storehouse body of sealing door closed, thereby makes things convenient for personnel's business turn over, reduces the loss of cold volume.

The utility model discloses further set up to: the driving wheel is internally provided with an inner cavity, the circumferential surface of the driving wheel is provided with guide holes at equal angular intervals, the driving part comprises a sliding block, a transmission rod, a sliding sleeve and a support rod, the sliding block is arranged in the guide holes in a sliding mode, the transmission rod is coaxially fixed with the driving wheel, the sliding sleeve is sleeved on the transmission rod and is connected with the transmission rod in a sliding mode, the support rod is hinged to the circumferential surface of the sliding sleeve, the support rod and the sliding direction of the sliding sleeve form an included angle, one end of the support rod is hinged to the sliding block, through holes matched with the sliding block in an inserting mode are formed in the.

By adopting the technical scheme, the sliding sleeve drives the supporting rod to rotate when sliding, one end of the supporting rod pushes the sliding block to slide along the guide hole and protrude out of the surface of the transmission wheel, the sliding block is in insertion fit with the through hole so as to connect the transmission wheel and the transmission belt, and the transmission motor drives the transmission wheel to rotate when rotating so as to drive the transmission belt to transmit, so as to drive the sealing door to slide and cover the inlet of the bin body; when the outage, the sliding sleeve that slides makes the slider reset, and in the slider got into the guiding hole, drive wheel and drive belt separation to this makes things convenient for the manual pass sealing door of operating personnel to carry out the switching operation, thereby reduces the influence of outage to the sealing door switching, improves the suitability of freezer.

The utility model discloses further set up to: the sliding sleeve is connected with a magnetic conductive sheet, the outer wall of the bin body is provided with an electromagnet, the electromagnet is electrically connected with a contact switch used for controlling the electromagnet to be electrified so as to adsorb the magnetic conductive sheet, and one end of the sliding sleeve is provided with an elastic part connected with the bin body.

Through adopting above-mentioned technical scheme, connect the magnetic conduction piece on the sliding sleeve, operating personnel triggers contact switch so that the electro-magnet circular telegram, adsorbs the magnetic conduction piece so that the sliding sleeve slides when the electro-magnet circular telegram to the separation and reunion operation of control drive wheel and drive belt, elastic component are used for making the sliding sleeve reset when the electro-magnet outage.

The utility model discloses further set up to: be provided with determine module on the storehouse body, determine module is including setting up on entry one side border and relative with the sealing door in order to detect the infrared sensor of sealing door position to and set up on the storehouse body and be connected with the controller of receiving the signal of telecommunication with the infrared sensor electricity, the controller is connected with the electro-magnet electricity in order to control the electromagnetism iron break-make electricity.

Through adopting above-mentioned technical scheme, set up the determine module on the storehouse body, infrared sensor's light direction is unanimous with the direction of sliding of sealing door, and when sealing door removed to being close to the entry border, infrared sensor triggered, thereby the circular telegram of controller control electro-magnet made drive wheel and drive belt separation to this makes things convenient for operating personnel to carry out manual fine setting, reduces the gap at sealing door and storehouse body entry border, with this excessive skew of avoiding sealing door.

The utility model discloses further set up to: the guide rail is internally provided with a containing groove along the length direction, the containing groove is internally provided with a heating wire, and the bottom wall of the containing groove is provided with a flow guide hole.

Through adopting above-mentioned technical scheme, the heating wire is installed in the guide rail, and when steam condenses between guide rail and sealing door, water freezes under the low temperature condition and influences the normal switching of sealing door, heats the guide rail through the heating wire to melt the ice sheet, the water that the icing becomes is discharged through the water conservancy diversion hole, avoids freezing once more.

The utility model discloses further set up to: be provided with release mechanism on the sealing door, release mechanism includes the first clamping piece of being connected with the sealing door, slides the second clamping piece of being connected with the sealing door, the rack of being connected with the second clamping piece, rotate the gear of being connected with the sealing door, pass the sealing door and extend to the internal handle in storehouse to and be used for locking the retaining member of handle, the wheel is connected with rack toothing, be close to first clamping piece when the second clamping piece slides and press from both sides tight drive belt with first clamping piece.

Through adopting above-mentioned technical scheme, when personnel are stranded in the storehouse in vivo, make gear revolve through rotating the handle, the gear drives the rack and slides so that the first clamping piece is kept away from to the second clamping piece and the drive belt is let go of the opening to separation drive belt and sealing door make things convenient for operating personnel to pass the sealing door and open the storehouse body and enter the mouth in order to save oneself, improve the security of freezer.

The utility model discloses further set up to: the sealing door has been seted up the spout by one side of the internal storehouse, the retaining member sets up the annular ring gear in the spout including sliding to and the shell fragment of spout diapire and annular ring gear is connected respectively at both ends, the teeth of a cogwheel one side that distributes on the annular ring gear is perpendicular with annular ring gear place face, the teeth of a cogwheel another side that distributes on the annular ring gear personally submits the contained angle with annular ring gear place, the one end that the gear was kept away from to the handle is L shape, the handle slides along the inclined plane on the annular ring gear teeth of a cogwheel and cooperates with annular ring gear teeth joint when the first clamping piece of second clamping piece orientation removed.

By adopting the technical scheme, the rack drives the second clamping piece to be matched with the first clamping piece to clamp the transmission belt when sliding, so that the transmission belt and the sealing door are fixed, and the sealing door is locked; the sealing door is provided with a sliding chute, the handle is L-shaped, one end of the handle is abutted against the inclined plane of the gear teeth of the annular gear ring and slides along the inclined plane when the handle rotates, the elastic sheet is compressed at the moment, and the elastic sheet is reset after the handle passes over the tip of the gear teeth of the annular gear ring, so that one end of the handle is clamped and matched with the gear teeth of the annular gear ring, and the handle and the gear are locked; make the handle break away from the joint state when stranded personnel extrude annular ring gear to make sealing door and drive belt separation, realize the unblock of sealing door, conveniently open the storehouse body entry and save oneself.

The utility model discloses further set up to: the top that leans on the entry on the external wall of storehouse is provided with the air-blower, be provided with the induced duct on the external wall of storehouse, one side opening that the sealing door was kept away from to the induced duct communicates with the air outlet of air-blower, the air outlet of induced duct is the same width with the entry of the storehouse body, it has the regulating plate to articulate on the induced duct inner wall.

By adopting the technical scheme, the blower blows high-pressure gas into the induced draft tube, the induced draft tube guides the high-pressure gas, so that the coverage area of the high-pressure gas is as wide as the bin body inlet when the high-pressure gas is sprayed out, an air curtain is formed, and when the sealing door is opened, the outside and the low-temperature environment in the bin body are isolated by the air curtain, so that the loss of cold energy is reduced, and the resource utilization rate is improved; the adjusting plate is used for adjusting the flux of high-pressure gas so as to adjust the wind speed, when people go in and out, the adjusting plate is rotated to increase the gas flux, reduce the wind speed and reduce the physical stimulation of the high-pressure gas to the people, so that the comfort level of the people who go in and out is improved.

The utility model discloses further set up to: the intelligent detection device is characterized in that an adjusting motor with an output shaft and an adjusting plate coaxially fixed is arranged on the outer wall of the top of the bin body, an infrared probe which is opposite to the ground and used for detecting the coming in and going out of a person is arranged on the outer wall of the top of the bin body, an electric controller which is electrically connected with the infrared probe to receive an electric signal of the infrared probe is arranged on the bin body, and the electric controller is electrically connected with the adjusting motor to control the starting and.

Through adopting above-mentioned technical scheme, when personnel passed in and out, infrared probe detected personnel and triggered, and the automatically controlled ware receives infrared probe's signal of telecommunication and control adjustment motor and rotate to this angle of rotation of adjusting the board increases gaseous flux, reduces the wind speed, reduces high-pressure gas to personnel's physical stimulation, thereby improves business turn over personnel's comfort level.

To sum up, the utility model discloses a beneficial technological effect does:

1. the refrigerating mechanism reduces the temperature in the bin body, the negative pressure mechanism extracts air and fills nitrogen, the negative pressure is maintained, and the temperature rise caused by the air pressure rise is reduced; the driving piece drives the screw rod to rotate, the screw rod drives the piston to directionally slide in the air storage tank when rotating, so that the air is blown into the air bag, the capacity of the air bag is increased, and therefore, a gap between the sealing door and the edge of the inlet is reduced, the loss of cold energy is reduced, the energy consumption is reduced, and the energy utilization rate is improved;

2. the sliding sleeve drives the supporting rod to push the sliding block to slide along the guide hole and protrude out of the surface of the transmission wheel, the sliding block is in inserting fit with the through hole so as to connect the transmission wheel and the transmission belt, and the transmission motor drives the transmission wheel to rotate when rotating so as to drive the sealing door to slide and cover the bin inlet; when the power is cut off, the sliding sleeve slides to separate the transmission wheel from the transmission belt, so that an operator can conveniently and manually push the sealing door to open and close, the influence of the power cut on the opening and closing of the sealing door is reduced, and the applicability of the refrigeration house is improved;

3. when personnel are trapped in the storehouse, the gear is rotated by rotating the handle, the gear drives the rack to slide so that the second clamping piece is far away from the first clamping piece and the transmission belt is released, thereby separating the transmission belt from the sealing door, facilitating the pushing of the sealing door by an operator and opening the inlet of the storehouse body for self rescue, and improving the safety of the cold storage.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a part of the structure of the present invention, mainly showing the driving belt;

fig. 3 is an exploded view of a portion of the structure of the present invention, showing primarily the annular ring gear;

fig. 4 is an explosion diagram of the partial structure of the present invention, mainly showing the sliding sleeve.

Reference numerals: 1. a bin body; 11. a refrigeration mechanism; 111. a refrigeration unit; 12. a negative pressure mechanism; 121. a vacuum pump; 122. a nitrogen making machine; 2. a sealing mechanism; 21. a sealing door; 211. a chute; 22. a gas storage tank; 23. a piston; 24. a screw; 25. a drive member; 251. a drive motor; 26. an air bag; 3. a transmission assembly; 31. a guide rail; 311. a containing groove; 312. a flow guide hole; 313. an electric heating wire; 32. a driving wheel; 321. an inner cavity; 322. a guide hole; 33. a transmission belt; 331. a through hole; 34. a drive member; 341. a slider; 342. a transmission rod; 343. a sliding sleeve; 344. a magnetic conductive sheet; 345. a strut; 346. a drive motor; 35. an electromagnet; 36. a contact switch; 37. an elastic member; 4. a detection component; 41. an infrared sensor; 42. a controller; 5. an unlocking mechanism; 51. a first clip piece; 52. a second clip; 53. a rack; 54. a gear; 55. a handle; 56. a locking member; 561. an annular ring gear; 562. a spring plate; 6. a blower; 61. an induced draft pipe; 62. an adjusting plate; 63. adjusting the motor; 64. an infrared probe; 65. and an electric controller.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a sealed negative pressure freezer, including the storehouse body 1, set up at the refrigerating mechanism 11 in the storehouse body 1, set up at the sealing mechanism 2 of the 1 entrance in the storehouse body to and be used for making negative pressure environment's negative pressure mechanism 12 in the storehouse body 1 with being connected in the storehouse body 1. The bin body 1 is cuboid, an inlet for people and goods to enter and exit is positioned on one side of the bin body 1, and the inlet is rectangular. The refrigerating mechanism 11 comprises a plurality of refrigerating units 111 arranged in the bin body 1, the refrigerating units 111 adopt condensing units 4MD-3.2, and the condensing units 4MD-3.2 refrigerate rapidly, so that the refrigerating efficiency is improved.

The negative pressure mechanism 12 comprises a vacuum pump 121 which is arranged outside the cabin body 1 and is communicated with the cabin body 1 through a pipeline, and a nitrogen making machine 122 which is arranged outside the cabin body 1. The vacuum pump 121 extracts the air in the storehouse body 1 to this reduces the atmospheric pressure in the storehouse body 1, and the temperature reduces when the atmospheric pressure of the storehouse body 1 reduces, and the nitrogen gas through the nitrogen generator 122 output compensates the atmospheric pressure in the storehouse body 1, makes and keeps the negative pressure state in the storehouse body 1, avoids atmospheric pressure to rise and makes the temperature rise again. The sealing mechanism 2 is used for keeping the sealing of the bin body 1, so that the food and the like are prevented from being oxidized quickly due to air entering, and the loss of cold energy is reduced.

Referring to fig. 2 and 3, the sealing mechanism 2 includes a sealing door 21 covering the inlet, an air tank 22 disposed in the sealing door 21, a piston 23 slidably disposed in the air tank 22, a screw 24 penetrating an end wall of the air tank 22 and threadedly coupled to the piston 23, a driving member 25 for driving the screw 24 to rotate, and an air bag 26 disposed on a side of the sealing door 21 opposite to the inlet edge. The sealing door 21 is cuboid, the air storage tank 22 is cuboid, the outer wall of the air storage tank 22 is fixed with the inner wall of the sealing door 21 through screws, and one end, away from the screw rod 24, of the air storage tank 22 is communicated with the air bag 26 through a pipeline.

The gasbag 26 is square ring shape, and gasbag 26 encircles sealing door 21 circumference setting to this and the laminating of entry border improves the leakproofness. The piston 23 is cuboid, the edge of the piston 23 is connected with the inner wall of the air storage tank 22 in a sliding mode, a sliding column is arranged in the air storage tank 22 along the length direction of the air storage tank, the sliding column is cylindrical, two ends of the sliding column are fixedly welded with the end wall of the air storage tank 22, and the sliding column penetrates through the piston 23 and is connected with the piston 23 in a sliding mode, so that the piston 23 is prevented from rotating, and the piston 23 is enabled to slide directionally. The driving part 25 comprises a driving motor 251 fixed with the inner wall of the sealing door 21 through a screw, the output shaft of the driving motor 251 is rotationally connected with the piston 23, and the screw 24 is rotationally connected with the air storage tank 22.

Referring to fig. 1 and 2, a transmission assembly 3 is arranged on the sealing door 21, and the transmission assembly 3 includes a guide rail 31 arranged on the outer wall of the bin body 1 and used for the sliding of the sealing door 21, transmission wheels 32 rotatably arranged at two ends of the guide rail 31, a transmission belt 33 sleeved on the transmission wheels 32, and a driving part 34 arranged on the guide rail 31 and used for driving the transmission wheels 32 to rotate. The length direction of guide rail 31 is unanimous with the width direction of entry, and the length of guide rail 31 is greater than the twice of entry width, and guide rail 31 has two, all adopts the channel-section steel, and one of them guide rail 31 opening is fixed up and through screw and ground, and another guide rail 31 passes through the fix with screw through screw and entry top border, and two guide rails 31 are parallel to each other and the opening is relative.

The bottom of the sealing door 21 is rotatably provided with a plurality of rollers which are in rolling connection with the inner wall of the guide rail 31, so that the friction force between the sealing door 21 and the guide rail 31 is reduced, and the abrasion is reduced. An accommodating groove 311 is formed in the guide rail 31 along the length direction of the guide rail, a heating wire 313 is arranged in the accommodating groove 311, the heating wire 313 is distributed along the width direction of the inlet of the bin body 1, frost between the sealing door 21 and the guide rail 31 is melted when the heating wire 313 is electrified to generate heat, and resistance when the sealing door 21 moves is reduced, so that the sealing door 21 is prevented from being stuck. A plurality of flow guide holes 312 are uniformly spaced on the bottom wall of the accommodating groove 311 along the length direction of the guide rail 31, and the flow guide holes 312 are used for dispersing water after the frost is melted, so that the secondary freezing of the water is avoided.

The drive wheel 32 has two, is discoid, is located the both ends of the guide rail 31 at entry top respectively, and the drive wheel 32 passes through the bearing and is connected with the rotation of guide rail 31 inner wall, and between two drive wheels 32 were located to drive belt 33 cover, and sealing door 21 is connected with drive belt 33 to this drives sealing door 21 through drive belt 33 and slides and cover storehouse body 1 entry.

Referring to fig. 1 and 4, a circular inner cavity 321 is formed in one of the driving wheels 32, and a plurality of guide holes 322 are formed in the circumferential surface of the driving wheel 32 at equal angular intervals. The driving part 34 includes a sliding block 341 slidably disposed in the guiding hole 322, a transmission rod 342 coaxially fixed with the transmission wheel 32, a sliding sleeve 343 fitted over the transmission rod 342 and slidably connected with the transmission rod 342, and four supporting rods 345 hinged to a circumferential surface of the sliding sleeve 343.

The guide hole 322 is square, the slider 341 is rectangular, the transmission rod 342 is rectangular, and one end is welded and fixed to the inner wall of the transmission wheel 32. The belt 33 is provided with a plurality of square through holes 331 at intervals along the length direction thereof, and the through holes 331 are in inserted fit with the sliding blocks 341 protruding from the guide holes 322, thereby connecting the belt 33 with the transmission wheel 32 and preventing the transmission wheel 32 from slipping with the belt 33. The bin body 1 is provided with a transmission motor 346, the transmission motor 346 is fixed with the outer wall of the guide rail 31 through screws, and the output shaft of the transmission motor 346 is coaxially fixed with the transmission rod 342.

The sliding sleeve 343 is square and annular, two ends of the supporting rod 345 are respectively hinged to the sliding sleeve 343 and the sliding block 341, and an included angle is formed between the supporting rod 345 and the sliding direction of the sliding sleeve 343. The sliding sleeve 343 is fixed with a magnetic conductive sheet 344 through a screw, and the magnetic conductive sheet 344 is annular and is arranged around the sliding sleeve 343 in the circumferential direction. The magnetic conductive sheet 344 is made of nickel with good magnetic conductivity, the electromagnet 35 is mounted on the inner wall of the transmission wheel 32, the electromagnet 35 and the transmission wheel 32 are fixed through screws, the electromagnet 35 is electrically connected with the contact switch 36, the contact switch 36 is mounted on the outer wall of the bin body 1, the contact switch 36 is an YT-1212 and 112A type key switch, and the YT-1212 and 112A type key switch has high sensitivity, so that the electromagnet 35 can respond quickly and delay is reduced.

One end of the sliding sleeve 343 is provided with an elastic member 37 connected with the bin body 1, the elastic member 37 adopts a spring with good elasticity, one end of the spring is welded and fixed with the outer wall of the bin body 1, and the other end is welded and fixed with the sliding sleeve 343. When the power is off, the electromagnet 35 is demagnetized, the sliding sleeve 343 is reset in a sliding manner under the action of the elastic piece 37, the sliding block 341 enters the guide hole 322, the transmission wheel 32 is separated from the transmission belt 33, and the locking state of the sealing door 21 is released, so that the sealing door 21 can be conveniently pushed manually by an operator to be opened and closed, the influence of the power-off on the opening and closing of the sealing door 21 is reduced, and the applicability of the refrigeration house is improved.

The bin body 1 is provided with a detection assembly 4, the detection assembly 4 comprises an infrared sensor 41 which is arranged on one side edge of the inlet and is opposite to the sealing door 21, and a controller 42 which is arranged on the bin body 1 and is electrically connected with the infrared sensor 41 to receive an electric signal, and the controller 42 is electrically connected with the electromagnet 35 to control the electromagnet 35 to be powered on or powered off. The infrared sensor 41 is fixed with the outer wall of the bin body 1 through screws, the light direction of the infrared sensor 41 is horizontally arranged, the light direction of the infrared sensor 41 is consistent with the sliding direction of the sealing door 21, and the infrared sensor 41 is opposite to the side wall of the edge of the sealing door 21. The infrared sensor 41 adopts a DR18 circular photoelectric sensor, and the DR18 circular photoelectric sensor has high detection accuracy, so that the position of the sealing door 21 is detected by infrared rays. The controller 42 adopts a PLC 42, and the PLC 42 controls the on-off of the electromagnet 35.

Referring to fig. 1 and 3, the sealing door 21 is provided with an unlocking mechanism 5, and the unlocking mechanism 5 includes a first clamping piece 51 connected with the sealing door 21, a second clamping piece 52 connected with the sealing door 21 in a sliding manner, a rack 53 connected with the second clamping piece 52, a gear 54 connected with the sealing door 21 in a rotating manner, a handle 55 extending into the cabin 1 through the sealing door 21, and a locking piece 56 for locking the handle 55. The second clamping piece 52 is close to the first clamping piece 51 when sliding and clamps the transmission belt 33 with the first clamping piece 51. The first clamping piece 51 and the second clamping piece 52 are both in a cuboid shape and are respectively located at two ends of the transmission belt 33, the first clamping piece 51 is fixedly welded to the top of the sealing door 21, the rack 53 penetrates into the sealing door 21 and is connected with the sealing door 21 in a sliding manner, the gear 54 is rotatably connected with the sealing door 21, and the gear 54 is connected with the rack 53 in a meshing manner.

The handle 55 passes sealing door 21 and is L shape towards the one end in the storehouse body 1, and sealing door 21 is by one side in the storehouse body 1 seted up supply handle 55 pivoted spout 211 to this makes things convenient for the rotation of handle 55, avoids handle 55 and storehouse body 1 entry border collision. When personnel are stranded in the storehouse body 1, stranded personnel only need rotate handle 55 and make gear 54 rotate, and gear 54 drives rack 53 and slides so that first clamping piece 51 is kept away from to second clamping piece 52 and drive belt 33 is let go of release to separation drive belt 33 and sealing door 21 make things convenient for operating personnel to pass sealing door 21 and open the storehouse body 1 entry in order to save oneself, improve the security of freezer.

The locking member 56 includes an annular gear ring 561 slidably disposed in the sliding slot 211, and a spring 562 having two ends respectively connected to the bottom wall of the sliding slot 211 and the annular gear ring 561. The elastic sheet 562 is arc-shaped, the convex surface of the elastic sheet 562 is welded and fixed with the annular gear ring 561, and two ends of the elastic sheet 562 are welded and fixed with the bottom wall of the sliding groove 211. The rotation axis of the handle 55 coincides with the central axis of the annular gear ring 561, and the gear teeth of the annular gear ring 561 face one side in the cabin 1.

When the handle 55 rotates, one end of the handle 55 is abutted against the inclined surface of the gear teeth of the annular gear ring 561 and slides along the inclined surface, at the moment, the elastic sheet 562 is compressed, the handle 55 is reset after passing through the tip end of the gear teeth of the annular gear ring 561, so that one end of the handle 55 is in clamping fit with the gear teeth of the annular gear ring 561, the handle 55 and the gear 54 are locked, the first clamping piece 51 and the second clamping piece 52 clamp the transmission belt 33, and the sealing door 21 and the transmission belt 33 are locked. Make handle 55 break away from the joint state when stranded personnel extrude annular ring gear 561 to make sealing door 21 and drive belt 33 separation, realize sealing door 21's unblock, conveniently open the storehouse body 1 entry and save oneself.

An air blower 6 is arranged on the outer wall of the bin body 1 close to the top of the inlet, the air blower 6 is fixed with the bin body 1 through screws, and an air outlet of the air blower 6 faces the ground. Be provided with induced duct 61 on the external wall of storehouse body 1, induced duct 61 passes through the fix with screw with the storehouse body 1, and the upper and lower opening of induced duct 61 communicates with each other, and one side opening that sealing door 21 was kept away from to induced duct 61 communicates with the air outlet of air-blower 6, and the air outlet of induced duct 61 is aequilate with the entry of the storehouse body 1, and articulated on the induced duct 61 inner wall have regulating plate 62, and regulating plate 62 is the cuboid form and just follows storehouse body 1 entry width direction and distributes. The blower 6 blows high-pressure gas into the induced duct 61, and the induced duct 61 guides the high-pressure gas, so that the covering area of the high-pressure gas is as wide as the inlet of the bin body 1 when the high-pressure gas is sprayed out, and an air curtain is formed.

An adjusting motor 63 with an output shaft coaxially fixed with the adjusting plate 62 is arranged on the outer wall of the bin body 1, and the adjusting motor 63 is fixed with the outer wall of the bin body 1 through screws. The outer wall of the top of the bin body 1 is provided with a plurality of infrared probes 64 opposite to the ground, and the infrared probes 64 are distributed at intervals along the width direction of the inlet of the bin body 1. The bin body 1 is provided with an electric controller 65 which is electrically connected with the infrared probe 64 to receive the electric signal of the infrared probe 64, the electric controller 65 is fixed with the outer wall of the bin body 1 through a screw, and the electric controller 65 is electrically connected with the adjusting motor 63 to control the start and stop of the adjusting motor 63. The electric controller 65 adopts an SDJ-2KW universal motor controller, and the SDJ-2KW universal motor controller can control accurately, so that the start and stop of the adjusting motor 63 can be controlled conveniently.

The infrared probe 64 adopts a DR18 circular photoelectric sensor, the DR18 circular photoelectric sensor has high detection precision, and people can be detected to enter and exit through infrared rays. When people get in and out, the infrared probe 64 detects the people and triggers, the electric controller 65 receives an electric signal of the infrared probe 64 and controls the adjusting motor 63 to rotate, so that the rotating angle of the adjusting plate 62 is adjusted, the gas flux is increased, the wind speed is reduced, the physical stimulation of high-pressure gas to the people is reduced, and the comfort level of the people getting in and out is improved.

The implementation principle of the embodiment is as follows: an operator only needs to put food and the like into the warehouse, then the contact switch 36 is triggered, the electromagnet 35 is electrified, the electromagnet 35 adsorbs the magnetic conduction sheet 344 when being electrified so as to enable the sliding sleeve 343 to slide, the sliding sleeve 343 drives the supporting rod 345 to rotate when sliding, one end of the supporting rod 345 pushes the sliding block 341 to slide along the guide hole 322 and protrude out of the surface of the transmission wheel 32, the sliding block 341 is in inserted fit with the through hole 331 so as to connect the transmission wheel 32 with the transmission belt 33, and the transmission motor 346 drives the transmission wheel 32 to rotate when rotating so as to drive the transmission belt 33 to drive the sealing door 21 to slide and cover the inlet of the warehouse body.

When the sealing door 21 moves to be close to the inlet edge, the infrared sensor 41 is triggered, the controller 42 controls the electromagnet 35 to be powered off, and the electromagnet 35 is demagnetized, so that the sliding sleeve 343 is reset in a sliding manner under the action of the elastic piece 37. The slide block 341 enters the guide hole 322, the transmission wheel 32 is separated from the transmission belt 33, the sliding phenomenon occurs between the transmission wheel 32 and the transmission belt 33, and the sealing door 21 continues to move under inertia and simultaneously decelerates and gradually covers the inlet of the silo body 1. Make things convenient for operating personnel to carry out manual fine setting simultaneously, reduce the gap at sealing door 21 and storehouse body 1 entry border to this avoids the excessive skew of sealing door 21, avoids the leakage of air conditioning, improves energy utilization.

The drive motor 251 then rotates the screw 24, which when rotated drives the piston 23 to slide within the reservoir 22, thereby blowing gas into the bladder 26. The capacity of the air bag 26 is increased, so that gaps between the sealing door 21 and the inlet edge are reduced, the loss of cold energy is reduced, the energy consumption is reduced, the resource utilization rate is improved, meanwhile, the gas entering of external oxygen and the like which shorten the food preservation time is reduced, and the preservation time of food and the like is prolonged.

The refrigerating mechanism 11 reduces the temperature of the articles in the bin body 1, the negative pressure mechanism 12 extracts the gas in the bin body 1, removes oxygen and other gases which shorten the food preservation time, and then fills partial nitrogen to balance the air pressure, so that the air pressure in the bin body 1 is lower than the outside, and the temperature rise caused by the air pressure rise is reduced.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a sealed negative pressure freezer which characterized in that: comprises a cabin body (1), a refrigeration mechanism (11) arranged in the cabin body (1), a sealing mechanism (2) arranged at an inlet of the cabin body (1), and a negative pressure mechanism (12) connected with the cabin body (1) and used for manufacturing a negative pressure environment in the cabin body (1), wherein the sealing mechanism (2) comprises a sealing door (21) covered on the inlet, a gas storage tank (22) arranged in the sealing door (21), a piston (23) directionally sliding arranged in the gas storage tank (22), a screw rod (24) penetrating through the end wall of the gas storage tank (22) and in threaded connection with the piston (23), a driving piece (25) driving the screw rod (24) to rotate, and an air bag (26) arranged at one side of the sealing door (21) opposite to the inlet edge, the screw rod (24) is rotationally connected with the gas storage tank (22), and the air bag (26) is arranged around the sealing door (21) in the circumferential direction, the air bag (26) is communicated with one end, far away from the screw rod (24), of the air storage tank (22), and the air bag (26) is propped against the edge of the inlet after being expanded.

2. The sealed negative pressure refrigerator according to claim 1, wherein: the sealing door is characterized in that a transmission assembly (3) is arranged on the sealing door (21), the transmission assembly (3) comprises a guide rail (31) which is arranged on the outer wall of the cabin body (1) and used for sliding the sealing door (21), transmission wheels (32) which are rotatably arranged at two ends of the guide rail (31), a transmission belt (33) which is sleeved on the transmission wheels (32), and a driving part (34) which is arranged on the guide rail (31) and used for driving the transmission wheels (32) to rotate, wherein the transmission belt (33) is connected with the sealing door (21).

3. The sealed negative pressure refrigerator according to claim 2, wherein: an inner cavity (321) is formed in the transmission wheel (32), guide holes (322) are formed in the circumferential surface of the transmission wheel (32) at equal angle intervals, the driving part (34) comprises a sliding block (341) arranged in the guide holes (322) in a sliding mode, a transmission rod (342) coaxially fixed with the transmission wheel (32), a sliding sleeve (343) sleeved on the transmission rod (342) and connected with the transmission rod (342) in a sliding mode, and a supporting rod (345) hinged to the circumferential surface of the sliding sleeve (343), an included angle is formed between the sliding direction of the supporting rod (345) and the sliding sleeve (343), one end of the supporting rod is hinged to the sliding block (341), through holes (331) in inserting fit with the sliding block (341) are formed in the transmission belt (33) at intervals along the length direction of the transmission belt, and a transmission motor (346) with an output shaft coaxially fixed with the transmission.

4. The sealed negative pressure refrigerator according to claim 3, wherein: the novel multifunctional bin is characterized in that a magnetic conductive sheet (344) is connected onto the sliding sleeve (343), an electromagnet (35) is arranged on the outer wall of the bin body (1), a contact switch (36) used for controlling the electromagnet (35) to be electrified so as to adsorb the magnetic conductive sheet (344) is electrically connected onto the electromagnet (35), and an elastic part (37) connected with the bin body (1) is arranged at one end of the sliding sleeve (343).

5. The sealed negative pressure refrigerator according to claim 4, wherein: the bin body (1) is provided with a detection assembly (4), the detection assembly (4) comprises an infrared sensor (41) which is arranged on one side edge of the inlet and is opposite to the sealing door (21) to detect the position of the sealing door (21), and a controller (42) which is arranged on the bin body (1) and is electrically connected with the infrared sensor (41) to receive an electric signal, wherein the controller (42) is electrically connected with the electromagnet (35) to control the electromagnet (35) to be switched on or switched off.

6. The sealed negative pressure refrigerator according to claim 2, wherein: a containing groove (311) is formed in the guide rail (31) along the length direction of the guide rail, an electric heating wire (313) is arranged in the containing groove (311), and a flow guide hole (312) is formed in the bottom wall of the containing groove (311).

7. The sealed negative pressure refrigerator according to claim 2, wherein: be provided with release mechanism (5) on sealing door (21), release mechanism (5) include first clamping piece (51) be connected with sealing door (21), with sealing door (21) second clamping piece (52) that slides and be connected, rack (53) be connected with second clamping piece (52), rotate gear (54) be connected with sealing door (21), pass sealing door (21) and extend to handle (55) in storehouse body (1) to and retaining member (56) that are used for locking handle (55), gear (54) are connected with rack (53) meshing, be close to first clamping piece (51) and press from both sides tight drive belt (33) with first clamping piece (51) when second clamping piece (52) slide.

8. The sealed negative pressure refrigerator according to claim 7, wherein: sliding grooves (211) are formed in one side, close to the interior of the bin body (1), of the sealing door (21), the locking piece (56) comprises an annular gear ring (561) which is arranged in the sliding grooves (211) in a sliding mode, and elastic pieces (562) of which two ends are connected with the bottom wall of the sliding grooves (211) and the annular gear ring (561) respectively, one side of the gear teeth distributed on the annular gear ring (561) is perpendicular to the surface where the annular gear ring (561) is located, the other side of the gear teeth distributed on the annular gear ring (561) is located at an included angle with the annular gear ring (561), one end, far away from the gear (54), of the handle (55) is L-shaped, and when the second clamping piece (52) moves towards the first clamping piece (51), the handle (55) slides along the inclined surface on the gear teeth of the annular gear ring (561).

9. The sealed negative pressure refrigerator according to claim 1, wherein: the top that leans on the entry on the outer wall of the storehouse body (1) is provided with air-blower (6), be provided with induced duct (61) on the outer wall of the storehouse body (1), one side opening that sealing door (21) was kept away from in induced duct (61) communicates with the air outlet of air-blower (6), the air outlet of induced duct (61) is aequilate with the entry of the storehouse body (1), it has regulating plate (62) to articulate on induced duct (61) inner wall.

10. The sealed negative pressure freezer of claim 9, wherein: the novel multifunctional nursing cabin is characterized in that an adjusting motor (63) with an output shaft and an adjusting plate (62) coaxially fixed is arranged on the outer wall of the cabin body (1), an infrared probe (64) opposite to the ground and used for detecting the entrance and exit of a person is arranged on the outer wall of the top of the cabin body (1), an electric controller (65) electrically connected with the infrared probe (64) and used for receiving an electric signal of the infrared probe (64) is arranged on the cabin body (1), and the electric controller (65) is electrically connected with the adjusting motor (63) and used for controlling the start and stop of the adjusting motor (63.