CN109990541B - Sealed negative pressure freezer - Google Patents
Sealed negative pressure freezer Download PDFInfo
- Publication number
- CN109990541B CN109990541B CN201910330596.4A CN201910330596A CN109990541B CN 109990541 B CN109990541 B CN 109990541B CN 201910330596 A CN201910330596 A CN 201910330596A CN 109990541 B CN109990541 B CN 109990541B
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- Prior art keywords
- sealing door
- bin body
- air
- driving
- sliding
- Prior art date
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- 238000007789 sealing Methods 0.000 claims abstract description 118
- 230000007246 mechanism Effects 0.000 claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- 230000005540 biological transmission Effects 0.000 claims description 40
- 238000003860 storage Methods 0.000 claims description 21
- 239000000523 sample Substances 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 10
- 238000005485 electric heating Methods 0.000 claims description 5
- 239000012634 fragment Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000005057 refrigeration Methods 0.000 abstract description 19
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 32
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- 235000013305 food Nutrition 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000004907 flux Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000000638 stimulation Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000009920 food preservation Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D13/00—Stationary devices, e.g. cold-rooms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
- F25D17/047—Pressure equalising devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/02—Doors; Covers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Refrigerator Housings (AREA)
Abstract
The invention relates to the technical field of refrigeration equipment, in particular to a sealed negative pressure refrigeration house which comprises a house body, a refrigeration mechanism arranged in the house body, a sealing mechanism arranged at an inlet of the house body, and a negative pressure mechanism connected with the house body and used for manufacturing a negative pressure environment in the house body. The invention has the effect of reducing the leakage of the cold air to improve the energy utilization rate.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to a sealed negative pressure refrigeration house.
Background
At present, the cold storage is mainly used as constant temperature storage cold air equipment for foods, dairy products, meats, aquatic products, chemical industry, medicines, seedling raising, scientific experiments and the like, and is actually a low-temperature cold storage (cold storage) which also belongs to refrigeration equipment, and compared with the refrigerator, the refrigeration area of the cold storage is much larger, but the cold storage has a communicating refrigeration principle.
The refrigerator needs to be kept sealed, so that the circulation of air is reduced to avoid gases such as oxygen and the like, the deterioration of food is quickened, meanwhile, the leakage of cold air is reduced, and the energy consumption is reduced. The existing refrigeration house sealing structure is generally provided with sealing rubber strips around a door body, the sealing performance of the door body is improved through the sealing rubber strips, leakage of cold air is reduced, and the refrigeration effect is improved.
The prior art solutions described above have the following drawbacks: when closing the refrigeration house door, because joint strip extrusion deformation leads to the adhesive tape contact not closely enough, can not laminate completely, there is the gap for the air conditioning leaks, causes the energy extravagant.
Disclosure of Invention
The invention aims to provide a sealed negative pressure refrigeration house, which reduces leakage of cold air and improves energy utilization rate.
The above object of the present invention is achieved by the following technical solutions:
The utility model provides a sealed negative pressure freezer, includes the storehouse body, sets up at the internal refrigeration mechanism of storehouse, sets up at the sealing mechanism of storehouse body entrance to and be used for making the negative pressure mechanism of negative pressure environment in the storehouse body coupling with the storehouse body, sealing mechanism includes that the lid is established on the entry, sets up the gas holder in the gas holder, directional sliding sets up the piston in the gas holder, pass gas holder end wall and with piston threaded connection's screw rod, drive screw pivoted driving piece, and set up the gasbag in the opposite one side of sealing door and entry border, the screw rod rotates with the gas holder to be connected, the gasbag encircles sealing door circumference setting, the gasbag is kept away from the one end intercommunication of screw rod with the gas holder, just after the gasbag is swelled with entry border butt.
By adopting the technical scheme, the refrigerating mechanism reduces the temperature of the articles in the bin body, the negative pressure mechanism extracts the gas in the bin body, removes oxygen and other gases which shorten the food fresh-keeping 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 piston is driven to slide in the air storage tank when the screw rod rotates, so that air is blown into the air bag, the capacity of the air bag is increased, gaps between the sealing door and the edge of the inlet are reduced, leakage of cold air is reduced, loss of cold energy is reduced, and the energy utilization rate is improved; meanwhile, the entry of external oxygen and other gases for shortening the food preservation time is reduced, and the food preservation time is prolonged.
The invention is further provided with: the sealing door is provided with a transmission assembly, the transmission assembly comprises a guide rail, a transmission wheel, a transmission belt and a driving part, the guide rail is arranged on the outer wall of the bin body and used for sliding the sealing door, the transmission wheel is rotatably arranged at two ends of the guide rail, the transmission belt is sleeved on the transmission wheel, the driving part is arranged on the guide rail and used for driving the transmission wheel to rotate, and the transmission belt is connected with the sealing door.
By adopting the technical scheme, the driving part drives the driving wheel to rotate, and the driving wheel drives the driving belt to drive the sealing door to slide along the guide rail, so that the sealing door seals the inlet of the bin body, thereby facilitating the ingress and egress of personnel and reducing the loss of cold.
The invention is further provided with: the driving component comprises a sliding block arranged in the guiding hole in a sliding mode, a transmission rod coaxially fixed with the driving wheel, a sliding sleeve sleeved on the transmission rod and connected with the transmission rod in a sliding mode, and a supporting rod hinged to the circumferential surface of the sliding sleeve, wherein the supporting rod is in an included angle with the sliding sleeve in the sliding direction, one end of the supporting rod is hinged to the sliding block, through holes matched with the sliding block in a plugging mode are formed in the driving belt in a spaced mode along the length direction of the driving belt, and a driving motor with an output shaft coaxially fixed with the transmission rod is arranged on the bin body.
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 driving wheel, the sliding block is in plug-in fit with the through hole so as to connect the driving wheel and the driving belt, and the driving motor drives the driving wheel to rotate when rotating so as to drive the driving belt to drive the sealing door to slide and cover the entrance of the bin body; when the power is off, the sliding sleeve resets the sliding block, the sliding block enters the guide hole, and the driving wheel is separated from the driving belt, so that an operator can conveniently push the sealing door manually to open and close, the influence of the power off on the opening and closing of the sealing door is reduced, and the applicability of the refrigeration house is improved.
The invention is further provided with: the sliding sleeve is connected with a magnetic conduction sheet, an electromagnet is arranged on the outer wall of the bin body, a contact switch for controlling the electromagnet to be electrified to adsorb the magnetic conduction sheet is electrically connected to the electromagnet, and an elastic piece connected with the bin body is arranged at one end of the sliding sleeve.
Through adopting above-mentioned technical scheme, connect the magnetic conduction piece on the sliding sleeve, operating personnel triggers contact switch in order to make the electro-magnet circular telegram, and the electro-magnet adsorbs the magnetic conduction piece in order to make the sliding sleeve slide when 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 invention is further provided with: the detection assembly comprises an infrared sensor arranged on the edge of one side of the inlet and opposite to the sealing door to detect the position of the sealing door, and a controller arranged on the bin and electrically connected with the infrared sensor to receive an electric signal, wherein the controller is electrically connected with the electromagnetic iron to control the electromagnet to be powered on or powered off.
Through adopting above-mentioned technical scheme, set up detection component on the storehouse body, infrared sensor's light direction is unanimous with the slip direction of sealing door, when sealing door moved to being close to the entry border, infrared sensor triggers, thereby the electro-magnet is controlled to the controller circular telegram makes 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 invention is further provided with: the guide rail is internally provided with a containing groove along the length direction thereof, the containing groove is internally provided with an electric heating wire, and the bottom wall of the containing groove is provided with a diversion hole.
Through adopting above-mentioned technical scheme, the heating wire is installed in the guide rail, and when the steam condensation was between guide rail and sealing door, water was frozen under low temperature condition and was influenced sealing door's normal switching, heats the guide rail through the heating wire to melt the ice sheet, the water that the icing formed is discharged through the water conservancy diversion hole, avoids freezing again.
The invention is further provided with: the sealing door is provided with an unlocking mechanism, the unlocking mechanism comprises a first clamping piece connected with the sealing door, a second clamping piece connected with the sealing door in a sliding mode, a rack connected with the second clamping piece, a gear connected with the sealing door in a rotating mode, a handle extending into the bin body through the sealing door, and a locking piece used for locking the handle, the gear is meshed with the rack, and the second clamping piece is close to the first clamping piece and clamps the transmission belt with the first clamping piece when sliding.
Through adopting above-mentioned technical scheme, when personnel are trapped in the storehouse is internal, makes the gear rotate through rotating the handle, and the gear drives the rack and slides in order to make the second clamping piece keep away from first clamping piece and release the drive belt to separation drive belt and sealing door, make things convenient for operating personnel to push sealing door and open the storehouse body entry in order to save oneself, improve the security of freezer.
The invention is further provided with: the sealing door is leaned on one side in the storehouse body to have seted up the spout, the retaining member is including sliding the annular ring gear that sets up in the spout 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 is personally submitted the contained angle with annular ring gear place face, the one end that the gear was kept away from to the handle is L shape, the second clamping piece slides along the inclined plane on the annular ring gear teeth and cooperates with annular ring gear tooth joint when moving towards first clamping piece.
By adopting the technical scheme, when the rack slides, the second clamping piece is driven to be matched with the first clamping piece to clamp the transmission belt, 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 groove, the handle is L-shaped, one end of the handle is abutted against the inclined surface of the annular gear ring gear tooth and slides along the inclined surface 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 end of the annular gear ring gear tooth, so that one end of the handle is in clamping fit with the gear tooth of the annular gear ring, and the handle and the gear are locked; when the trapped person extrudes the annular gear ring, the handle is separated from the clamping state, so that the sealing door is separated from the driving belt, unlocking of the sealing door is realized, and the entrance of the bin body is conveniently opened for self rescue.
The invention is further provided with: the air blower is arranged on the outer wall of the bin body close to the top of the inlet, the air guiding pipe is arranged on the outer wall of the bin body, an opening on one side, far away from the sealing door, of the air guiding pipe is communicated with an air outlet of the air blower, the air outlet of the air guiding pipe is equal in width with the inlet of the bin body, and the inner wall of the air guiding pipe is hinged with the adjusting plate.
By adopting the technical scheme, the blower blows high-pressure gas into the air guiding pipe, the air guiding pipe guides the high-pressure gas, so that the coverage area of the high-pressure gas is equal to the width of the inlet of the bin body when the high-pressure gas is sprayed out, an air curtain is formed, and when the sealing door is opened, the air curtain is used for isolating the outside environment from the low-temperature environment in the bin body, thereby reducing the loss of cold energy and improving the resource utilization rate; the adjusting plate is used for adjusting the flux of high-pressure gas so as to adjust the wind speed, and when people get 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, thereby improving the comfort level of the people getting in and out.
The invention is further provided with: the automatic detecting device is characterized in that an adjusting motor with an output shaft coaxially fixed with the adjusting plate is arranged on the outer wall of the bin body, an infrared probe opposite to the ground and used for detecting personnel to come in and go out is arranged on the outer wall of the top of the bin body, an electric controller electrically connected with the infrared probe and used for receiving 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 stopping of the adjusting motor.
Through adopting above-mentioned technical scheme, when personnel business turn over, infrared probe detects personnel and triggers, and the electrical controller receives infrared probe's electrical signal and control regulating motor rotates to this rotation angle who adjusts the regulating plate, increase gas flux, reduce the wind speed, reduce high-pressure gas and to personnel's physical stimulation, thereby improve business turn over personnel's comfort level.
In summary, the beneficial technical effects of the invention are as follows:
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, and the screw rod drives the piston to directionally slide in the air storage tank when rotating, so that air is blown into the air bag, the capacity of the air bag is increased, so that gaps between the sealing door and the edge of the inlet are reduced, the loss of cold is reduced, the energy consumption is reduced, and the energy utilization rate is improved;
2. the sliding sleeve drives the support rod to push the sliding block to slide along the guide hole and protrude out of the surface of the driving wheel, the sliding block is in plug-in fit with the through hole so as to connect the driving wheel and the driving belt, and the driving motor drives the driving wheel to rotate when rotating so as to drive the sealing door to slide and cover the inlet of the bin body; when the power is off, the sliding sleeve enables the driving wheel to be separated from the driving belt, so that an operator can push the sealing door to open or close manually, the influence of the power off on the opening or closing of the sealing door is reduced, and the applicability of the refrigeration house is improved;
3. when personnel are trapped in the bin body, the gear is rotated by rotating the handle, and the gear drives the rack to slide so that the second clamping piece is far away from the first clamping piece and the driving belt is released, so that the driving belt and the sealing door are separated, the sealing door is pushed by an operator conveniently, the bin body inlet is opened for self rescue, and the safety of the refrigeration house is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a partial schematic view of the present invention, mainly showing a belt;
FIG. 3 is an exploded view of a portion of the construction of the present invention, showing primarily the annular ring gear;
fig. 4 is an exploded view of a part of the structure of the present invention, mainly showing a sliding sleeve.
Reference numerals: 1. a bin body; 11. a refrigeration mechanism; 111. a refrigerating unit; 12. a negative pressure mechanism; 121. a vacuum pump; 122. a nitrogen making machine; 2. a sealing mechanism; 21. sealing the door; 211. a chute; 22. a gas storage tank; 23. a piston; 24. a screw; 25. a driving member; 251. a driving motor; 26. an air bag; 3. a transmission assembly; 31. a guide rail; 311. a receiving groove; 312. a deflector aperture; 313. heating wires; 32. a driving wheel; 321. an inner cavity; 322. a guide hole; 33. a transmission belt; 331. a through hole; 34. a driving part; 341. a slide block; 342. a transmission rod; 343. a sliding sleeve; 344. magnetic conductive sheets; 345. a support rod; 346. a drive motor; 35. an electromagnet; 36. a contact switch; 37. an elastic member; 4. a detection assembly; 41. an infrared sensor; 42. a controller; 5. an unlocking mechanism; 51. a first clip; 52. a second clip; 53. a rack; 54. a gear; 55. a handle; 56. a locking member; 561. an annular gear ring; 562. a spring plate; 6. a blower; 61. an air guiding pipe; 62. an adjusting plate; 63. adjusting a 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, a sealed negative pressure refrigerator disclosed by the invention comprises a refrigerator body 1, a refrigerating mechanism 11 arranged in the refrigerator body 1, a sealing mechanism 2 arranged at the inlet of the refrigerator body 1, and a negative pressure mechanism 12 connected with the refrigerator body 1 and used for manufacturing a negative pressure environment in the refrigerator body 1. The bin body 1 is in a cuboid shape, an inlet for personnel and goods to enter and exit is formed in 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 are used for refrigerating rapidly, so that the refrigerating efficiency is improved.
The negative pressure mechanism 12 comprises a vacuum pump 121 which is arranged outside the bin body 1 and is communicated with the bin body 1 through a pipeline, and a nitrogen making machine 122 which is arranged outside the bin body 1. The vacuum pump 121 pumps air in the bin body 1 to reduce the air pressure in the bin body 1, and when the air pressure in the bin body 1 is reduced, the temperature is reduced, and the nitrogen produced by the nitrogen making machine 122 compensates the air pressure in the bin body 1, so that the inside of the bin body 1 is maintained in a negative pressure state, and the temperature rise caused by the air pressure rise is avoided. The sealing mechanism 2 is used for keeping the sealing of the bin body 1, avoiding air from entering to accelerate the oxidization of food and the like, and reducing the loss of cold.
Referring to fig. 2 and 3, the sealing mechanism 2 includes a sealing door 21 provided to cover an inlet, a gas tank 22 provided in the sealing door 21, a piston 23 slidably provided in the gas tank 22, a screw 24 penetrating an end wall of the gas tank 22 and screwed to the piston 23, a driving member 25 driving the screw 24 to rotate, and an air bag 26 provided on a side of the sealing door 21 opposite to an edge of the inlet. The sealing door 21 is in a cuboid shape, the air storage tank 22 is in a cuboid shape, the outer wall of the air storage tank 22 is fixed with the inner wall of the sealing door 21 through bolts, and one end, far away from the screw 24, of the air storage tank 22 is communicated with the air bag 26 through a pipeline.
The air bag 26 is square annular, and the air bag 26 is circumferentially arranged around the sealing door 21 so as to be attached to the edge of the inlet, and the sealing performance is improved. The piston 23 is in a cuboid shape, the edge of the piston 23 is in sliding connection with the inner wall of the air storage tank 22, a sliding column is arranged in the air storage tank 22 along the length direction of the sliding column, the sliding column is in a cylinder shape, 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 in sliding connection with the piston 23, so that the piston 23 is prevented from rotating, and the piston 23 is enabled to realize directional sliding. The driving member 25 comprises a driving motor 251 fixed on the inner wall of the sealing door 21 through a screw, an output shaft of the driving motor 251 is rotatably connected with the piston 23, and the screw 24 is rotatably connected with the air storage tank 22.
Referring to fig. 1 and 2, a driving assembly 3 is provided on the sealing door 21, and the driving assembly 3 includes a guide rail 31 provided on an outer wall of the bin body 1 for sliding the sealing door 21, driving wheels 32 rotatably provided at both ends of the guide rail 31, a driving belt 33 sleeved on the driving wheels 32, and a driving part 34 provided on the guide rail 31 to drive the driving wheels 32 to rotate. The length direction of the guide rail 31 is consistent with the width direction of the inlet, the length of the guide rail 31 is larger than twice the width of the inlet, two guide rails 31 are both channel steel, one guide rail 31 is opened upwards and fixed with the ground through a screw, the other guide rail 31 is fixed with the top edge of the inlet through a screw, and the two guide rails 31 are parallel to each other and are opposite to each other in opening.
The bottom of the sealing door 21 is rotatably provided with a plurality of rollers 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. The guide rail 31 is internally provided with the accommodating groove 311 along the length direction thereof, the accommodating groove 311 is internally provided with the electric heating wires 313, the electric heating wires 313 are distributed along the width direction of the inlet of the bin body 1, when the electric heating wires 313 are electrified and heated, frost between the sealing door 21 and the guide rail 31 is melted, and the resistance when the sealing door 21 moves is reduced, so that the sealing door 21 is prevented from being blocked. A plurality of diversion holes 312 are uniformly arranged on the bottom wall of the accommodating groove 311 at intervals along the length direction of the guide rail 31, and the diversion holes 312 are used for dispersing water after frost is melted, so that secondary freezing of the water is avoided.
The driving wheels 32 are two and are disc-shaped, the driving wheels 32 are respectively positioned at two ends of the guide rail 31 at the top of the entrance, the driving wheels 32 are rotatably connected with the inner wall of the guide rail 31 through bearings, the driving belt 33 is sleeved between the two driving wheels 32, and the sealing door 21 is connected with the driving belt 33, so that the sealing door 21 is driven to slide through the driving belt 33 and cover the entrance of the bin body 1.
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 comprises a sliding block 341 slidingly arranged in the guide hole 322, a transmission rod 342 coaxially fixed with the transmission wheel 32, a sliding sleeve 343 sleeved on the transmission rod 342 and slidingly connected with the transmission rod 342, and four supporting rods 345 hinged with the circumferential surface of the sliding sleeve 343.
The guide hole 322 is square, the sliding block 341 is cuboid, the transmission rod 342 is cuboid, and one end is welded and fixed with the inner wall of the transmission wheel 32. The driving belt 33 is provided with a plurality of square through holes 331 at intervals along the length direction, and the through holes 331 are in plug-in fit with the sliding blocks 341 protruding out of the guide holes 322 so as to connect the driving belt 33 with the driving wheel 32 and avoid slipping of the driving wheel 32 and the driving 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 an output shaft of the transmission motor 346 is coaxially fixed with the transmission rod 342.
The sliding sleeve 343 is square annular, two ends of the supporting rod 345 are respectively hinged to the sliding sleeve 343 and the sliding block 341, and the sliding direction of the supporting rod 345 and the sliding sleeve 343 forms an included angle. The sliding sleeve 343 is fixedly provided with a magnetic conduction sheet 344 through a screw, and the magnetic conduction sheet 344 is circular and circumferentially arranged around the sliding sleeve 343. The magnetic conduction sheet 344 is made of nickel with good magnetic conductivity, the electromagnet 35 is arranged on the inner wall of the driving wheel 32, the electromagnet 35 is fixed with the driving wheel 32 through screws, the electromagnet 35 is electrically connected with the contact switch 36, the contact switch 36 is arranged on the outer wall of the bin body 1, the contact switch 36 is a YT-1212-112A type key switch, and the YT-1212-112A type key switch has high sensitivity, so that the electromagnet 35 can quickly respond, and delay is reduced.
One end of the sliding sleeve 343 is provided with an elastic piece 37 connected with the bin body 1, the elastic piece 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 of the spring is welded and fixed with the sliding sleeve 343. When the power is off, the electromagnet 35 is demagnetized, the sliding sleeve 343 is slid and reset under the action of the elastic piece 37, the sliding block 341 enters the guide hole 322, the driving wheel 32 is separated from the driving belt 33, and the locking state of the sealing door 21 is released, so that an operator can conveniently push the sealing door 21 to conduct opening and closing operations manually, 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 detection assembly 4 is arranged on the bin body 1, the detection assembly 4 comprises an infrared sensor 41 which is arranged on the edge of one side of the inlet and 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 is 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 controller 42, and the PLC controller 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 clip 51 connected to the sealing door 21, a second clip 52 slidably connected to the sealing door 21, a rack 53 connected to the second clip 52, a gear 54 rotatably connected to the sealing door 21, a handle 55 extending into the bin 1 through the sealing door 21, and a locking member 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 cuboid and are respectively positioned at two ends of the transmission belt 33, the first clamping piece 51 is welded and fixed with 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 connected with the sealing door 21 in a rotating manner, and the gear 54 is meshed and connected with the rack 53.
The handle 55 passes through the sealing door 21 and is L-shaped towards one end in the bin body 1, and a chute 211 for the handle 55 to rotate is formed on one side of the sealing door 21 close to the bin body 1, so that the handle 55 can rotate conveniently, and the handle 55 is prevented from colliding with the inlet edge of the bin body 1. When a person is trapped in the bin body 1, the trapped person only needs to rotate the handle 55 to enable the gear 54 to rotate, the gear 54 drives the rack 53 to slide so that the second clamping piece 52 is far away from the first clamping piece 51 and the driving belt 33 is released, and therefore the driving belt 33 and the sealing door 21 are separated, the operator can push the sealing door 21 conveniently, and the entrance of the bin body 1 is opened for self-rescue, and the safety of a refrigeration house is improved.
The locking member 56 includes an annular gear ring 561 slidably disposed in the sliding slot 211, and a spring plate 562 with two ends respectively connected to the bottom wall of the sliding slot 211 and the annular gear ring 561. The spring plate 562 is arc-shaped, the convex surface of the spring plate 562 is welded and fixed with the annular gear ring 561, and the two ends of the spring plate 562 are welded and fixed with the bottom wall of the sliding chute 211. The rotation axis of the handle 55 coincides with the central axis of the annular gear ring 561, the teeth of the annular gear ring 561 facing one side in the cartridge body 1.
When the handle 55 rotates, one end of the handle 55 abuts against the inclined plane of the teeth of the annular gear ring 561 and slides along the inclined plane, at this time, the elastic sheet 562 is compressed, and the handle 55 is reset after passing over the tip end of the teeth of the annular gear ring 561, so that one end of the handle 55 is in clamping fit with the teeth of the annular gear ring 561, thereby locking the handle 55 and the gear 54, so that the first clamping piece 51 and the second clamping piece 52 clamp the driving belt 33, and locking the sealing door 21 and the driving belt 33. When the trapped person extrudes the annular gear ring 561, the handle 55 is separated from the clamping state, so that the sealing door 21 is separated from the transmission belt 33, the unlocking of the sealing door 21 is realized, and the entrance of the bin body 1 is conveniently opened for self rescue.
The top of leaning on the entry on the storehouse body 1 outer wall is installed air-blower 6, and air-blower 6 passes through the fix with screw with storehouse body 1, and the air outlet of air-blower 6 is towards ground. The air guide pipe 61 is arranged on the outer wall of the bin body 1, the air guide pipe 61 is fixed with the bin body 1 through screws, the upper opening and the lower opening of the air guide pipe 61 are communicated, the opening of one side of the air guide pipe 61 far away from the sealing door 21 is communicated with the air outlet of the air blower 6, the air outlet of the air guide pipe 61 is equal in width to the inlet of the bin body 1, the inner wall of the air guide pipe 61 is hinged with the adjusting plate 62, and the adjusting plate 62 is cuboid and distributed along the width direction of the inlet of the bin body 1. The blower 6 blows high-pressure gas into the air guiding pipe 61, and the air guiding pipe 61 guides the high-pressure gas, so that the coverage 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 infrared probes 64 opposite to the ground are arranged on the outer wall of the top of the bin body 1, and the infrared probes 64 are multiple and uniformly 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 screws, 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 is accurate in control, so that the start and stop of the regulating motor 63 are conveniently controlled.
The infrared probe 64 adopts a DR18 circular photoelectric sensor, the detection accuracy of the DR18 circular photoelectric sensor is high, and the detection personnel can go in and out through infrared rays. When a person gets in or out, the infrared probe 64 detects the person and triggers, the electric controller 65 receives the 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 person is reduced, and the comfort level of the person getting in or 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 magnetic conduction sheet 344 is adsorbed when the electromagnet 35 is electrified so as to enable the sliding sleeve 343 to slide, the supporting rod 345 is driven to rotate when the sliding sleeve 343 slides, 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 driving wheel 32, the sliding block 341 is in plug-in fit with the through hole 331 so as to connect the driving wheel 32 with the driving belt 33, the driving motor 346 drives the driving wheel 32 to rotate when rotating, and the driving belt 33 is driven to drive the sealing door 21 to slide and cover the inlet of the warehouse body 1.
When the sealing door 21 moves to be close to the edge of the entrance, 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 slid and reset under the action of the elastic piece 37. The sliding block 341 enters the guide hole 322, the driving wheel 32 is separated from the driving belt 33, a slipping phenomenon occurs between the driving wheel 32 and the driving belt 33, and the sealing door 21 continuously moves under inertia while decelerating and gradually covering the inlet of the bin body 1. Meanwhile, the manual fine adjustment is convenient for operators, and gaps between the sealing door 21 and the inlet edge of the bin body 1 are reduced, so that excessive deviation of the sealing door 21 is avoided, leakage of cold air is avoided, and the energy utilization rate is improved.
Then, the driving motor 251 drives the screw 24 to rotate, and when the screw 24 rotates, the piston 23 is driven to slide in the air storage tank 22, so that air is blown into the air bag 26. The capacity of the air bag 26 is increased to reduce the gap between the sealing door 21 and the edge of the inlet, reduce the loss of cold, reduce energy consumption, improve the utilization rate of resources, reduce the entry of external oxygen and other gases for shortening the fresh-keeping time of foods, and prolong the fresh-keeping time of the foods.
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 fresh-keeping 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 embodiments of the present invention are all preferred embodiments of the present invention, and are not intended to limit the scope of the present invention in this way, therefore: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.
Claims (3)
1. A sealed negative pressure freezer, its characterized in that: the air bag type air conditioner comprises a bin body (1), a refrigerating mechanism (11) arranged in the bin body (1), a sealing mechanism (2) arranged at the inlet of the bin body (1) and a negative pressure mechanism (12) connected with the bin body (1) and used for manufacturing a negative pressure environment in the bin body (1), wherein the sealing mechanism (2) comprises a sealing door (21) arranged on the inlet in a covering mode, an air storage tank (22) arranged in the sealing door (21), a piston (23) arranged in the air storage tank (22) in a directional sliding mode, a screw rod (24) penetrating through the end wall of the air storage tank (22) and in threaded connection with the piston (23), a driving piece (25) and an air bag (26) arranged on the side, opposite to the inlet edge, of the sealing door (24) is in rotary connection with the air storage tank (22), the air bag (26) is circumferentially arranged around the sealing door (21), the air bag (26) is communicated with one end, far from the screw rod (24), and after the air bag (26) bulges, is abutted against the inlet edge.
The sealing door (21) is provided with a transmission assembly (3), the transmission assembly (3) comprises a guide rail (31) arranged on the outer wall of the bin body (1) and used for sliding the sealing door (21), a transmission wheel (32) rotatably arranged at two ends of the guide rail (31), a transmission belt (33) sleeved on the transmission wheel (32), and a driving part (34) arranged on the guide rail (31) and used for driving the transmission wheel (32) to rotate, and the transmission belt (33) is connected with the sealing door (21);
An inner cavity (321) is formed in the driving wheel (32), guide holes (322) are formed in the circumferential surface of the driving wheel (32) at equal angular intervals, the driving part (34) comprises a sliding block (341) arranged in the guide holes (322) in a sliding mode, a driving rod (342) coaxially fixed with the driving wheel (32), a sliding sleeve (343) sleeved on the driving rod (342) and slidingly connected with the driving rod (342), and a supporting rod (345) hinged to the circumferential surface of the sliding sleeve (343), the supporting rod (345) forms an included angle with the sliding direction of the sliding sleeve (343) and one end of the supporting rod is hinged to the sliding block (341), through holes (331) in plug-in fit with the sliding block (341) are formed in the driving belt (33) at intervals along the length direction of the driving belt, and a driving motor (346) with an output shaft coaxially fixed with the driving rod (342) is arranged on the bin body (1).
The sliding sleeve (343) is connected with the magnetic conduction sheet (344), the electromagnet (35) is arranged on the outer wall of the bin body (1), the electromagnet (35) is electrically connected with the contact switch (36) for controlling the electromagnet (35) to be electrified so as to adsorb the magnetic conduction sheet (344), and one end of the sliding sleeve (343) is provided with the elastic piece (37) connected with the bin body (1);
the detection assembly (4) is arranged on the bin body (1), the detection assembly (4) comprises an infrared sensor (41) arranged on the edge of one side of the inlet and opposite to the sealing door (21) so as to detect the position of the sealing door (21), and a controller (42) arranged on the bin body (1) and electrically connected with the infrared sensor (41) so as to receive an electric signal, and the controller (42) is electrically connected with the electromagnet (35) so as to control the on-off of the electromagnet (35);
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 diversion hole (312) is formed in the bottom wall of the containing groove (311);
The sealing door (21) is provided with an unlocking mechanism (5), the unlocking mechanism (5) comprises 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 mode, a rack (53) connected with the second clamping piece (52), a gear (54) rotationally connected with the sealing door (21), a handle (55) extending into the bin body (1) through the sealing door (21), and a locking piece (56) used for locking the handle (55), the gear (54) is connected with the rack (53) in a meshed mode, and 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 sealing door (21) leans on one side in the storehouse body (1) to offer spout (211), retaining member (56) are including sliding annular ring gear (561) that set up in spout (211) to and shell fragment (562) that spout (211) diapire and annular ring gear (561) are connected respectively at both ends, the tooth face that distributes on annular ring gear (561) is perpendicular with annular ring gear (561) place face, the tooth another side that distributes on annular ring gear (561) is personally submitted the contained angle with annular ring gear (561) place face, the one end that gear (54) was kept away from to handle (55) is L shape, inclined plane on annular ring gear (561) tooth is slided and is cooperateed with annular ring gear (561) tooth joint to handle (55) when second clamping piece (52) are moved towards first clamping piece (51).
2. The sealed negative pressure freezer of claim 1, wherein: the air guide device is characterized in that an air blower (6) is arranged on the outer wall of the bin body (1) close to the top of the inlet, an air guide pipe (61) is arranged on the outer wall of the bin body (1), one side opening of the air guide pipe (61) away from the sealing door (21) is communicated with an air outlet of the air blower (6), the air outlet of the air guide pipe (61) is equal in width with the inlet of the bin body (1), and an adjusting plate (62) is hinged to the inner wall of the air guide pipe (61).
3. The sealed negative pressure freezer of claim 2, wherein: the automatic detecting device is characterized in that an output shaft and an adjusting motor (63) which is coaxially fixed with the adjusting plate (62) are arranged on the outer wall of the bin body (1), an infrared probe (64) which is opposite to the ground and used for detecting personnel to come in and go out is arranged on the outer wall of the top of the bin body (1), an electric controller (65) which is electrically connected with the infrared probe (64) and used for receiving an electric signal of the infrared probe (64) is arranged on the bin body (1), and the electric controller (65) is electrically connected with the adjusting motor (63) to control the start and stop of the adjusting motor (63).
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| CN201910330596.4A CN109990541B (en) | 2019-04-23 | 2019-04-23 | Sealed negative pressure freezer |
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| CN201910330596.4A CN109990541B (en) | 2019-04-23 | 2019-04-23 | Sealed negative pressure freezer |
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| CN109990541B true CN109990541B (en) | 2024-04-26 |
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| CN112568694B (en) * | 2019-09-30 | 2021-11-02 | 佛山市顺德区美的电热电器制造有限公司 | Cooking control method, cooking control device, cooking appliance and computer readable storage medium |
| CN111350620B (en) * | 2020-03-17 | 2021-11-30 | 衡阳市井恒电子产品有限公司 | Diesel oil tank temperature control device utilizing principle of expansion with heat and contraction with cold |
| CN112758064B (en) * | 2021-01-27 | 2022-02-25 | 淄博爱科工矿机械有限公司 | Parking brake hydraulic device of explosion-proof trackless rubber-tyred vehicle |
| CN112970936A (en) * | 2021-03-24 | 2021-06-18 | 安徽好味道饲料科技有限公司 | Utilization method of waste liquid for biological fermentation of feed |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202648302U (en) * | 2012-04-26 | 2013-01-02 | 澳柯玛股份有限公司 | Electric refrigerator with touch-type door body opening and closing device |
| CN104930796A (en) * | 2014-03-21 | 2015-09-23 | 北京福瑞通科技有限公司 | Air-tight door |
| CN205525714U (en) * | 2016-04-22 | 2016-08-31 | 叶林军 | Chemistry seal pot for items stored |
| CN105925288A (en) * | 2016-06-29 | 2016-09-07 | 内蒙古科技大学 | Rotary type air inflating gate and negative pressure coal pyrolyzing furnace using rotary type air inflating gate |
| CN206556342U (en) * | 2017-01-13 | 2017-10-13 | 望家欢农产品集团有限公司 | Automatic cold-storage door |
| CN108426413A (en) * | 2018-04-19 | 2018-08-21 | 青岛海尔股份有限公司 | Opposite opened door body assembly and refrigerator |
| CN108726122A (en) * | 2018-06-12 | 2018-11-02 | 贵州大学 | A kind of coal mining transport device with screening function |
| CN208075429U (en) * | 2018-04-03 | 2018-11-09 | 朱秋 | A kind of door that sealing effect is good |
| CN208205585U (en) * | 2018-05-22 | 2018-12-07 | 刘清泉 | A kind of freezer sliding door |
| CN209840501U (en) * | 2019-04-23 | 2019-12-24 | 绍兴华宝制冷设备有限公司 | Sealed negative pressure freezer |
-
2019
- 2019-04-23 CN CN201910330596.4A patent/CN109990541B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202648302U (en) * | 2012-04-26 | 2013-01-02 | 澳柯玛股份有限公司 | Electric refrigerator with touch-type door body opening and closing device |
| CN104930796A (en) * | 2014-03-21 | 2015-09-23 | 北京福瑞通科技有限公司 | Air-tight door |
| CN205525714U (en) * | 2016-04-22 | 2016-08-31 | 叶林军 | Chemistry seal pot for items stored |
| CN105925288A (en) * | 2016-06-29 | 2016-09-07 | 内蒙古科技大学 | Rotary type air inflating gate and negative pressure coal pyrolyzing furnace using rotary type air inflating gate |
| CN206556342U (en) * | 2017-01-13 | 2017-10-13 | 望家欢农产品集团有限公司 | Automatic cold-storage door |
| CN208075429U (en) * | 2018-04-03 | 2018-11-09 | 朱秋 | A kind of door that sealing effect is good |
| CN108426413A (en) * | 2018-04-19 | 2018-08-21 | 青岛海尔股份有限公司 | Opposite opened door body assembly and refrigerator |
| CN208205585U (en) * | 2018-05-22 | 2018-12-07 | 刘清泉 | A kind of freezer sliding door |
| CN108726122A (en) * | 2018-06-12 | 2018-11-02 | 贵州大学 | A kind of coal mining transport device with screening function |
| CN209840501U (en) * | 2019-04-23 | 2019-12-24 | 绍兴华宝制冷设备有限公司 | Sealed negative pressure freezer |
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