CN114483532A - But spacing's evacuation connecting device - Google Patents
But spacing's evacuation connecting device Download PDFInfo
- Publication number
- CN114483532A CN114483532A CN202210097148.6A CN202210097148A CN114483532A CN 114483532 A CN114483532 A CN 114483532A CN 202210097148 A CN202210097148 A CN 202210097148A CN 114483532 A CN114483532 A CN 114483532A
- Authority
- CN
- China
- Prior art keywords
- base
- sleeve
- butt joint
- joint port
- side wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 210000001503 joint Anatomy 0.000 claims abstract description 33
- 230000003044 adaptive effect Effects 0.000 claims abstract description 4
- 230000007704 transition Effects 0.000 claims description 12
- 230000006978 adaptation Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 238000004321 preservation Methods 0.000 abstract description 11
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000005057 refrigeration Methods 0.000 abstract description 2
- 238000003032 molecular docking Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/123—Fluid connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/14—Provisions for readily assembling or disassembling
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention discloses a vacuumizing connecting device with adjustable distance, and relates to the technical field of refrigeration. The exhaust pipe comprises a sleeve, an exhaust head, a fixed seat and a butt joint port which are arranged along a coaxial line. The sleeve and the fixing seat are detachably and fixedly connected to form a cavity with an opening, and the exhaust head is located in the cavity. The exhaust head is connected with the fixing seat in a matched and clamped mode, and one end of the exhaust head is connected with the butt joint port in the fixing seat in a detachable and fixed mode. The butt joint port is adaptive to the clamping connection with a sucker. The exhaust head can push the spring, so that the butt joint port and the exhaust head can move with the sleeve and the fixed seat, and distance compensation can be provided. Meanwhile, the diameter of the sealing cover is larger than the diameter of the exhaust air of the preservation drawer, so that assembly error compensation can be provided for the preservation drawer in all directions, and the preservation drawer can be accurately and effectively vacuumized.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to a vacuumizing connecting device with an adjustable distance.
Background
The application of the vacuum preservation technology of the refrigerator is more and more extensive at present. The matching technology is also being updated day by day, and especially when the fresh-keeping drawer of the refrigerating chamber is applied in the using process, the air in the fresh-keeping drawer needs to be exhausted by matching with a vacuum pump. Present prior art scheme is mostly drawer exocoel trompil and directly links through the hose, and the drawer exocoel needs rigid, and drawer exocoel form sealedly through the fitting surface, but the volume of drawer and drawer exocoel combination is too big, and is inconvenient to carry, and holistic cost is higher. The other scheme is that a hard round pipe is designed at the tail of the sealed drawer and is inserted into a soft joint at an air exhaust end or a hose is directly connected, and the hose integrally moves along with the drawer. But has great disadvantage, if the hard round tube at the tail of the drawer is inserted into the soft joint of the drawer section, the precision requirement of the matching position of the two is higher. Particularly, the precision of the relative position in the up-down direction and the left-right direction is very high, the drawer cannot be butted or is inclined after being butted once deviation exists, and meanwhile, the phenomena of poor sealing and air leakage can occur if the deviation exists in the front-back direction. If directly link the drawer through the afterbody hose, the hose removes along with the drawer is whole, after long-term the use, appears the pipeline easily and drops, the cracked problem of wearing and tearing, not only leaks gas easily still to influence pleasing to the eye.
Disclosure of Invention
In view of the above problems, the present invention provides an adjustable distance vacuum connection device.
In order to solve the technical problems, the invention adopts the following technical scheme:
a distance-adjustable vacuumizing connecting device comprises a sleeve, an exhaust head, a fixed seat and a butt joint port which are arranged along a coaxial line. The sleeve and the fixing seat are detachably and fixedly connected to form a cavity with an opening, and the exhaust head is located in the cavity. The exhaust head is connected with the fixing seat in a matched and clamped mode, and one end of the exhaust head is connected with the butt joint port in the fixing seat in a detachable and fixed mode. The butt joint port is adaptive to the clamping connection with a sucker.
Furthermore, the sleeve is in a double-layer stepped circular truncated cone shape, and the diameter of the upper part of the sleeve is smaller than that of the lower part of the sleeve.
Furthermore, the sleeve is provided with a through hole at the axis of the upper part, and the inner side wall of the lower part of the sleeve is provided with a thread and an opening at the bottom surface. The edge of the through hole of the sleeve is provided with a downward rib plate which is in a circular bulge.
Furthermore, the exhaust head is in a three-layer stepped circular truncated cone shape and comprises a conical head, a transition section and a base from top to bottom, the diameters of all parts are sequentially increased from top to bottom, and through holes are formed in the axial direction. The upper outer side wall of the base is in a hexagonal prism shape, and the lower outer side wall of the base is provided with threads.
Further, the upper end edge of the base is provided with a transversely extending outer edge which can be matched with the upper part of the sleeve. And a spring sleeved on the outer ring of the transition section is arranged between the outer edge and the lower top surface of the sleeve.
Furthermore, the fixing seat comprises a base and a fixing plate, the base is in a cylindrical shape with openings at the upper part and the lower part, and the upper part of the inner side wall of the base is provided with a hexagonal inner hole matched with the upper part of the base. The outer side wall of the base is provided with threads which can be matched with the inner side wall of the lower part of the exhaust head.
Furthermore, the left side and the right side of the base are respectively and fixedly connected with a cylindrical fixing part with an upper opening and a lower opening.
Furthermore, the fixed plate is positioned at the lower side of the base, the left side and the right side of the fixed plate are provided with cylindrical bulges which can be matched with the fixed part, and the top of each bulge is provided with a screw hole. The fixing plate is provided with a through hole which can be matched with the base, and the through hole is positioned in the middle of the bulges at two sides. The fixing parts on the two sides of the fixing seat are respectively sleeved on the bulges on the two sides of the fixing plate in a matched manner and are fixedly connected through screws.
Further, the upper part of the butt joint port is cylindrical, and the inner side wall of the upper part of the butt joint port is provided with threads matched with the outer side wall of the lower part of the base. The lower part of the butt joint port is in a sucker shape, the inner side wall of the lower part of the butt joint port is matched and attached with a sucker, and the bottom edge of the lower part of the butt joint port is provided with a clamping part. The upper part of the butt joint port penetrates through the through hole of the fixing plate and is detachably and fixedly connected with the base of the exhaust head, and the butt joint port and the base can move in the fixing sleeve.
Further, the bottom border of sucking disc is upturned, form can with the joint groove of joint looks adaptation, the lower part of butt joint port passes through joint portion and the joint groove come with the sucking disc carries out the joint fixed.
The invention has the beneficial effects that: the exhaust head is connected with the butt joint port and can move in the fixed seat, and the spring can be pushed to enable the exhaust head to move in the sleeve, so that distance compensation is performed when the fresh-keeping drawer is attached to the sealing cover conveniently. Meanwhile, the sucker is made of flexible materials, the outer diameter of the sucker is larger than the diameter of the exhaust hole of the fresh-keeping drawer, the compensation of assembly errors can be provided for the fresh-keeping drawer in all directions, and the effective vacuumizing of the fresh-keeping drawer is further guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 shows a front view of fig. 1.
Fig. 3 shows an exploded view of fig. 1.
Fig. 4 shows a cross-sectional view of fig. 1.
Detailed Description
The invention provides a distance-adjustable vacuum-pumping connecting device, and an embodiment of the invention is described in detail below with reference to the accompanying drawings.
Referring to fig. 1 and 2, an adjustable vacuum connection device includes a sleeve 1, an exhaust head 2, a fixing base 3, and a docking port 4. The sleeve 1 is in a double-layer stepped circular truncated cone shape, a through hole is formed in the axis of the upper portion of the sleeve, threads are formed in the inner side wall of the lower portion of the sleeve, the bottom surface of the inner side wall of the lower portion of the sleeve is open, and the diameter of the upper portion of the sleeve 1 is smaller than that of the lower portion of the sleeve. The through hole of the sleeve 1 is provided with a downward rib plate which is circular and convex, and the structure of the sleeve 1 can be reinforced by the convex rib plate, so that the sleeve 1 is prevented from cracking. The exhaust head 2 is in a three-layer stepped circular truncated cone shape, comprises a conical head 201, a transition section 202 and a base 203 from top to bottom, the diameters of the conical head 201, the transition section 202 and the base 203 are sequentially increased from top to bottom, and a through hole is formed in the axial direction. The upper portion of the base 203 has a hollow hexagonal prism shape, and the lower portion thereof has an outer sidewall having a screw thread. The upper end edge of the base 203 is provided with an outer edge 204 which extends transversely and can be matched with the upper part of the sleeve 1, and a spring 5 which is sleeved on the transition section 202 is arranged between the outer edge 204 and the lower top surface of the sleeve 2. The fixed seat 3 comprises a base 301 and a fixed plate 303, the base 301 is cylindrical with an opening at the upper and lower parts, the upper part of the inner side wall of the base 301 is provided with a hexagonal inner hole which can be matched with the upper part of the base 203, and the outer side wall of the base 301 is provided with threads which can be matched with the inner side wall of the lower part of the exhaust head 2. The right and left sides of the base 301 are fixedly connected with cylindrical fixing portions 302 having an upper and lower opening, respectively. The fixing plate 303 is located under the base 301, and has cylindrical protrusions on its left and right sides, which are adapted to the fixing portion 302, and screw holes on the top of each protrusion. The fixing parts 302 at the left and right sides of the base 301 are respectively sleeved on the protrusions at the two sides of the fixing plate 303 in a matched manner and are fixedly connected through screw holes. The upper portion of the docking port 4 has a cylindrical shape, and the inner sidewall of the upper portion has a screw thread adapted to the outer sidewall of the lower portion of the base 203. The lower part of the butt joint port 4 is in a sucker shape, a sucker 401 is attached to the inner side wall of the lower part of the butt joint port in a matched mode, and a clamping portion 402 is arranged at the bottom end edge of the lower part of the butt joint port 4. The upper part of the docking port 4 passes through the through hole of the fixing plate 303 and is connected with the lower part of the base of the exhaust head, the base 301 is internally detachably and fixedly connected, and the upper part of the docking port 4 and the base can move in the base 301. The bottom edge of the suction cup 401 is turned up to form a clamping groove 403 adapted to the clamping portion 402, and the lower portion of the docking port 4 is clamped and fixed with the suction cup 401 through the clamping portion 402 and the clamping groove 403.
The installation mode of the invention is as follows: as shown in FIG. 3, the spring 5 is sleeved on the outer ring of the transition section 202, and the base 203 is inserted into the base 301 and clamped with the hexagonal inner hole of the inner side wall of the upper part of the base 301 through the upper part of the base 203. The outer edge 204 of the upper part of the base 203 is arranged at the pipe orifice of the upper part of the base 301. The spring 4 is sleeved on the outer ring of the transition section 202, and the diameter of the spring 4 is the same as that of the outer edge 204. Then, the sleeve 1 is sleeved on the outer rings of the spring 4 and the exhaust head 2, and the conical head 201 penetrates through a through hole in the upper part of the sleeve, so that the upper end face of the transition section 201 is located at the through hole. The screw thread of the inner side wall of the lower part of the sleeve 1 is detachably and fixedly connected with the screw thread of the outer side wall of the base 301 to form a cavity. The outer edge 204 of the upper part of the base 203 is located within the upper part of the sleeve 1. The fixing portions 302 on the left and right sides of the base 301 are sleeved on the protrusions on the two sides of the fixing plate 303, and the base 301 and the fixing plate 303 are fixedly connected through screws. The upper part of the butt joint port 4 passes through the through hole of the fixing plate 303, and the screw thread on the inner side wall of the butt joint port 4 is detachably and fixedly connected with the screw thread on the outer side wall of the lower part of the base 203 of the exhaust head 2 in the fixing seat 3. Finally, the clamping part 402 at the lower part of the butt joint port 4 is clamped and fixed with the clamping groove 403 of the sucker 401 correspondingly. The sleeve 1, the exhaust head 2, the base 301, the fixing plate 303, the docking port 4 and the suction cup 401 are arranged along the same axis of the through hole.
The working process of the invention is as follows: as shown in fig. 4, when the vacuum pumping operation is required, the mounted suction cup 401 is attached to the periphery of the exhaust hole of the preservation drawer, the vacuum pump is connected to the conical head 201 of the exhaust head 2, and then the vacuum pump is turned on to evacuate the preservation drawer. During vacuum pumping, suction cups 401 are gradually brought closer to the crisper drawer so that docking port 4 is pushed along with base 203. While the outer rim 204 of the upper part of the base 203 pushes the spring 5 and moves in the upper part of the sleeve 1. The outer diameter of the transition section 202 is the same as the diameter of the through hole at the upper part of the sleeve 1, and the transition section 202 can protrude from the through hole at the upper part of the sleeve 1. When the vacuumizing operation is not needed, the vacuum pump is turned off, the conical head 201 is separated from the vacuum pump, the sucking disc 401 is separated from the periphery of the exhaust hole of the preservation drawer, and then the preservation drawer can automatically recover to the normal pressure.
The invention has the beneficial effects that: the fresh drawer pushes the docking port 4 and the base 203 during the evacuation process, and the base 203 pushes the spring 5 through the outer rim 204, so that the docking port 4 and the exhaust head 2 can move in the sleeve 1 and the base 301, and distance compensation in this direction can be provided. The upper portion of base 203 of exhaust head 2 corresponds the joint with the hexagon hole in the fixing base 3 to can prevent that exhaust head 2 from rotating at will through mutually supporting with fixed plate 303, avoid influencing the inside connection stability of device. Meanwhile, the diameter of the sucker 401 is larger than that of the vent hole of the preservation drawer, so that assembly error compensation can be provided for each direction of the preservation drawer, and the preservation drawer can be accurately and effectively vacuumized.
It is noted that, in the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," "intermediate," "end," and the like are to be construed broadly; terms such as "left", "right", "top", "bottom", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only terms of relationships determined for convenience in describing structural relationships of the components of the present invention, and are not intended to refer to any component of the present invention, and should not be construed as limiting the present invention.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (10)
1. The utility model provides an adjustable distance's evacuation connecting device which characterized in that:
the exhaust pipe comprises a sleeve (1), an exhaust head (2), a fixed seat (3) and a butt joint port (4) which are arranged along a coaxial line;
the sleeve (1) and the fixed seat (3) are detachably and fixedly connected to form a cavity with an opening, and the exhaust head (2) is positioned in the cavity;
the exhaust head (2) is in adaptive clamping connection with the fixed seat (3), and one end of the exhaust head (2) is detachably and fixedly connected with the butt joint port (4) in the fixed seat (3);
the butt joint port (4) is adaptive to and clamped with a sucker (401).
2. An adjustable distance vacuum connection as claimed in claim 1, wherein: the sleeve (1) is in a double-layer stepped circular truncated cone shape, and the diameter of the upper part of the sleeve is smaller than that of the lower part of the sleeve.
3. An adjustable distance vacuum coupling as claimed in claim 2, wherein: the upper axle center of the sleeve (1) is provided with a through hole, the inner side wall of the lower part of the sleeve is provided with a thread, and the bottom surface of the sleeve is opened;
the edge of the through hole of the sleeve (1) is provided with a downward rib plate which is in a circular bulge.
4. An adjustable distance vacuum connection as claimed in claim 1, wherein: the exhaust head (2) is in a three-layer stepped circular truncated cone shape and comprises a conical head (201), a transition section (202) and a base (203) from top to bottom, the diameters of all parts are sequentially increased from top to bottom, and through holes are formed in the axial direction;
the upper outer side wall of the base (203) is in a hexagonal prism shape, and the lower outer side wall of the base is provided with threads.
5. An adjustable distance vacuum connection according to claim 4, wherein: the upper end edge of the base (203) is provided with an outer edge (204) which extends transversely and can be matched with the upper part of the sleeve (1);
and a spring (5) sleeved on the outer ring of the transition section (202) is arranged between the outer edge (204) and the lower top surface of the sleeve (1).
6. An adjustable distance vacuum connection according to claim 1 or 4, wherein: the fixed seat (3) comprises a base (301) and a fixed plate (303), the base (301) is cylindrical with an opening at the upper part and the lower part, and the upper part of the inner side wall of the base (301) is provided with a hexagonal inner hole which can be matched with the upper part of the base (203);
the outer side wall of the base (301) is provided with threads which can be matched with the inner side wall of the lower part of the exhaust head (2).
7. An adjustable distance vacuum connection as claimed in claim 6, wherein: the left side and the right side of the base (301) are respectively and fixedly connected with a cylindrical fixing part (302) with an upper opening and a lower opening.
8. An adjustable distance vacuum connection as claimed in claim 6, wherein: the fixing plate (303) is positioned at the lower side of the base (301), the left side and the right side of the fixing plate are provided with cylindrical bulges which can be matched with the fixing part (302), and the top of each bulge is provided with a screw hole;
the fixing plate (303) is provided with a through hole which can be matched with the base (301), and the through hole is positioned in the middle of the bulges at two sides;
the fixing parts (302) on the two sides of the fixing seat (3) are respectively sleeved on the bulges on the two sides of the fixing plate (303) in a matched manner and are fixedly connected through screws.
9. An adjustable distance vacuum coupling as claimed in claim 1, wherein: the upper part of the butt joint port (4) is cylindrical, and the inner side wall of the upper part of the butt joint port is provided with threads matched with the outer side wall of the lower part of the base (203);
the lower part of the butt joint port (4) is in a sucker shape, a sucker (401) is attached to the inner side wall of the lower part of the butt joint port in a matching mode, and a clamping portion (402) is arranged at the bottom end edge of the lower part of the butt joint port (4);
the upper part of the butt joint port (4) penetrates through the through hole of the fixing plate (303) and is detachably and fixedly connected with the base (203) of the exhaust head (2), and the butt joint port and the base can move in the fixing sleeve.
10. An adjustable distance vacuum connection as claimed in claim 9, wherein: the bottom border of sucking disc (401) is upturned, form can with joint groove (403) of joint portion (402) looks adaptation, the lower part of butt joint port (4) is passed through joint portion (402) and joint groove (403) come with sucking disc (401) carry out the joint fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210097148.6A CN114483532B (en) | 2022-01-27 | 2022-01-27 | Distance-adjustable vacuumizing connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210097148.6A CN114483532B (en) | 2022-01-27 | 2022-01-27 | Distance-adjustable vacuumizing connecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114483532A true CN114483532A (en) | 2022-05-13 |
| CN114483532B CN114483532B (en) | 2024-05-14 |
Family
ID=81477181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210097148.6A Active CN114483532B (en) | 2022-01-27 | 2022-01-27 | Distance-adjustable vacuumizing connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114483532B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972360A (en) * | 2016-07-06 | 2016-09-28 | 大连沃森达智能仪器有限公司 | LNG special quick connector |
| CN106704816A (en) * | 2016-12-20 | 2017-05-24 | 武汉市欧睿科技有限公司 | Vacuum gas-filling device convenient to disassemble and assemble |
| WO2018040747A1 (en) * | 2016-08-29 | 2018-03-08 | 魏宏华 | Vacuum juice freshness-preserving cup |
| CN111649515A (en) * | 2020-06-05 | 2020-09-11 | 海信（山东）冰箱有限公司 | Refrigerating equipment |
| CN113339236A (en) * | 2021-06-28 | 2021-09-03 | 澳柯玛股份有限公司 | Air extraction connecting device and air extraction method for vacuum drawer |
-
2022
- 2022-01-27 CN CN202210097148.6A patent/CN114483532B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972360A (en) * | 2016-07-06 | 2016-09-28 | 大连沃森达智能仪器有限公司 | LNG special quick connector |
| WO2018040747A1 (en) * | 2016-08-29 | 2018-03-08 | 魏宏华 | Vacuum juice freshness-preserving cup |
| CN106704816A (en) * | 2016-12-20 | 2017-05-24 | 武汉市欧睿科技有限公司 | Vacuum gas-filling device convenient to disassemble and assemble |
| CN111649515A (en) * | 2020-06-05 | 2020-09-11 | 海信（山东）冰箱有限公司 | Refrigerating equipment |
| CN113339236A (en) * | 2021-06-28 | 2021-09-03 | 澳柯玛股份有限公司 | Air extraction connecting device and air extraction method for vacuum drawer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114483532B (en) | 2024-05-14 |
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