CN111910965B - Extension formula shelter system - Google Patents
Extension formula shelter system Download PDFInfo
- Publication number
- CN111910965B CN111910965B CN202010784484.9A CN202010784484A CN111910965B CN 111910965 B CN111910965 B CN 111910965B CN 202010784484 A CN202010784484 A CN 202010784484A CN 111910965 B CN111910965 B CN 111910965B
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- Prior art keywords
- shelter
- blade
- sand
- channel
- filter screen
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H1/00—Buildings or groups of buildings for dwelling or office purposes; General layout, e.g. modular co-ordination or staggered storeys
- E04H1/12—Small buildings or other erections for limited occupation, erected in the open air or arranged in buildings, e.g. kiosks, waiting shelters for bus stops or for filling stations, roofs for railway platforms, watchmen's huts or dressing cubicles
- E04H1/1205—Small buildings erected in the open air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/74—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element
- B01D46/76—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving vibrations
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/343—Structures characterised by movable, separable, or collapsible parts, e.g. for transport
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
An expansion type shelter system comprises a left shelter, a right shelter and a middle shelter, wherein the left shelter and the right shelter can be expanded or stored relative to the middle shelter, and foldable support legs are arranged at the bottoms of the left shelter and the right shelter; the left cabin is internally provided with a heater, a sensing system and a centralized control system, the right cabin is internally provided with an oxygen generator and an air conditioner, the sensing system comprises an oxygen concentration detector, a smoke alarm, a temperature and humidity sensor and a weather instrument, and the upper wall of the right cabin is also provided with a ventilation device.
Description
Technical Field
The invention relates to the field of square cabins, in particular to an extended square cabin system.
Background
The shelter is important equipment which can be used in the fields of military use, medical treatment, communication and the like, is suitable for being used in the field operation occasions, is widely applied to various fields, such as maneuvering command systems, communication, medical treatment, logistics support and the like, and is one of important equipment of modern maneuvering troops; meanwhile, the shelter is also applied to civil special vehicles, such as emergency communication vehicles, power station vehicles, large equipment loading vehicles and the like.
The shelter may also be fitted with various devices such as hydraulics, camera beds, communication devices, ventilators, etc. The ventilation equipment is an important part and plays a role in communicating the inside and the outside, but with the progress of the society, the requirements on the ventilation equipment are increasingly improved, and various requirements such as cold and heat considerations, impurity removal, noise avoidance and the like are provided while ventilation is carried out.
The prior art shelter ventilation equipment has the following defects:
1. even if the common ventilation equipment is not in the urban environment, the surrounding environment is relatively safe and comfortable. And partial shelter is because field work, and the environment that its air regenerating device faces is also complicated, can drop including impurity such as leaf, drops through air regenerating device and gets into inside the shelter, causes the inside environmental pollution of shelter.
2. The ventilation devices of the prior art often filter by a single filtering means and are not suitable for filtering with too fine a filtering structure, such as a filter element, which, after all, requires the ventilation to be taken into account. Therefore, only a single filter screen is often used, and no other effective adaptive ventilation structure is available, and the requirement for filtering is the highest in the field environment.
3. In the filtering process of the ventilator in the prior art, although the filter screen can block a part of impurities, so that the impurities are blocked from being attached to the filter screen, due to the continuous ventilation, a part of the attached impurities are sucked into the square cabin again under the continuous suction force.
4. The filter screen of the air interchanger in the prior art is easy to damage.
5. The air interchanger in the prior art has the defects of impurity accumulation after long-term use and troublesome cleaning.
6. The mobility of prior art because the shelter, consequently the nature is accomodate to folding nature is general demand, and when the shelter and air regenerating device fit, air regenerating device lacks the means of accomodating.
Disclosure of Invention
In order to overcome the above problems, the present invention proposes a solution to solve the above problems simultaneously.
The technical scheme adopted by the invention for solving the technical problems is as follows: an expansion type shelter system comprises a left shelter, a right shelter and a middle shelter, wherein the left shelter and the right shelter can be expanded or stored relative to the middle shelter, and foldable support legs are arranged at the bottoms of the left shelter and the right shelter; the left cabin is internally provided with a heater, a sensing system and a centralized control system, the right cabin is internally provided with an oxygen generator and an air conditioner, the sensing system comprises an oxygen concentration detector, a smoke alarm, a temperature and humidity sensor and a meteorological instrument, and the upper wall of the right cabin is also provided with ventilation equipment; the ventilation apparatus includes: the device comprises a shielding plate, a filter screen framework assembly, a first filter screen, a main body, a dust collecting box, a second filter screen, a traction rod, a balancing weight, a driving rod, a rotating motor, a ventilation fan, a driving shaft, a first sand-proof impeller, a second sand-proof impeller, a ventilation motor and a driven shaft; wherein first sand control impeller includes first blade, and second sand control impeller includes the second blade, filter screen skeleton subassembly includes: the main body is provided with a first channel, a second channel and a guide plate;
the rotating motor can drive the shielding plate to rotate upwards relative to the upper wall of the right cabin so as to open the shielding plate, and the specific driving mode is as follows: the rotating motor drives the driving rod to rotate, the driving rod drives the traction rod to move, and the traction rod drives the shielding plate to rotate; the drive rod is provided with the balancing weight so as to maintain balance when the shielding plate is opened; in the opening state, the included angle between the shielding plate and the upper wall of the right cabin is more than 30 degrees and less than 60 degrees;
one end of the first filter screen is connected to the shielding plate, and the other end of the first filter screen is connected to the upper wall of the right cabin; the upper connecting rods and the lower connecting rods are rotatably connected through the middle rotating piece, the upper connecting rods are connected to the shielding plate through the upper rotating piece, the lower connecting rods are connected to the upper wall of the right cabin through the lower rotating piece, at least two upper connecting rods are arranged, every two upper connecting rods are connected through the upper cross rod, at least two lower connecting rods are connected through the lower cross rod, the upper cross rod is provided with the upper touch panel, the upper touch panel is a circular plate, the lower cross rod is provided with the lower touch panel, the lower touch panel is a circular plate, and the diameter of the upper touch panel is larger than that of the lower touch panel; the upper connecting rod and the lower connecting rod support the first filter screen when being unfolded;
the included angle between the ventilating fan and the upper wall of the right cabin is smaller than 90 degrees, the ventilating motor drives the driving shaft to rotate, the driving shaft drives the ventilating fan to rotate, the driving shaft is connected with the driven shaft, the driven shaft is provided with the first sand-proof impeller and the second sand-proof impeller, the ventilating fan, the second sand-proof impeller and the first sand-proof impeller are sequentially arranged, the distance between the ventilating fan and the second sand-proof impeller is larger than the distance between the first sand-proof impeller and the second sand-proof impeller, the number of the first blades and the number of the second blades are five, the first blades and the second blades are arranged in a staggered mode, each first blade and each second blade comprise an overlapping area, and each first blade and each second blade corresponding to the overlapping area are provided with a vent hole; the second filter screen is arranged above the ventilation fan;
the second channel is used for receiving impurities falling between the first blade and the second blade, the first channel is used for receiving the impurities blocked in front of the first blade, the diameter of the inlet of the first channel is larger than that of the inlet of the second channel, and the first channel and the second channel are both contracted and extended in diameter; the inlet edge of the first channel is provided with the guide plate; the first channel and the second channel are communicated with the dust collecting box; the dust collecting box is detachably connected with the main body.
Furthermore, the upper connecting rod and the lower connecting rod are respectively telescopic loop bars.
Furthermore, the traction rod is a telescopic loop bar.
Furthermore, the surfaces of the upper touch plate, the lower touch plate and the first filter screen which are adjacent to each other are cambered surfaces.
Further, the guide plate is a tapered plate.
Furthermore, the driving shaft is detachably connected with the driven shaft.
Further, the lower surface of the dust collecting box is an arc-shaped surface.
Further, the number of the vent holes on each first blade is four.
Further, the balancing weight is a spherical block.
Further, the number of the vent holes on each second blade is six.
The invention has the beneficial effects that:
1. to background art's 1 st point, adopted the design of shielding plate, the shielding plate can make impurity drop through inclination moreover to avoid getting into inside the shelter.
2. To the 2 nd point of background art, taken except that air regenerating device main impeller, additionally set up two sand prevention impeller, the space between the blade is filled each other to the blade of sand prevention impeller, in order to block the stereoplasm granule that probably exists, and to the circulation that probably exists after having set up sand prevention impeller receives the problem of influence, set up the ventilation space in the top of impeller group, reserved the air vent on the blade of sand prevention impeller, the air vent also does not overlap each other, thereby when guaranteeing the circulation, further the entering of having blockked impurity, and sand prevention impeller can dismantle.
3. To the 3 rd, 4 th point of background art, set up the skeleton texture to the filter screen, and the skeleton texture is provided with the touch board to touching the filter screen and clapping the adnexed impurity on the filter screen.
4. In view of the background art, at the 5 th point, a detachable dust collecting box is provided, and a guide passage and a guide plate leading to the dust collecting box are correspondingly provided.
5. To the 6 th point of the background art, a rotatable folding structure is adopted, and a corresponding connecting rod structure, a balancing weight, a driving structure and the like are matched to realize folding and storage.
Note: the foregoing designs are not sequential, each of which provides a distinct and significant advance in the present invention over the prior art.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a plan view of an extended shelter of the present invention
FIG. 2 is a schematic view of the shelter ventilator of the present invention
FIG. 3 is a view of the structure of a sand control impeller assembly of the present invention
FIG. 4 is a partial block diagram of a screen frame according to the present invention
In the figures, the reference numerals are as follows:
1. a middle cabin; 2. a right cabin upper wall; 3. a shielding plate; 4. a screen frame assembly; 5. a first filter screen; 6. a main body; 7. a dust collecting box; 8. a second filter screen; 9. a draw bar; 10. a balancing weight; 11. a drive rod; 12. rotating the motor; 13. a ventilator; 14. a drive shaft; 15. a first channel; 16. a second channel; 17. a guide plate; 18. a first blade; 19. a second blade; 20. an upper connecting rod; 21. a lower connecting rod; 22. a middle rotating member; 23. an upper rotating member; 24. a lower rotating member; 25. an upper touch pad; 26. a lower touch pad; 27. a lower cross bar; 28. an upper cross bar; 29. a vent hole; 30. a second sand control impeller; 31. a first sand control impeller; 32. a ventilation motor; 33. a driven shaft; 34. a left compartment; 35. a right compartment; 36. an oxygen generator; 37. an air conditioner; 38. a heater; 39. a sensing system; 40. centralized control system
Detailed Description
As shown in the figure: an expansion type shelter system comprises a left shelter, a right shelter and a middle shelter, wherein the left shelter and the right shelter can be expanded or stored relative to the middle shelter, and foldable support legs are arranged at the bottoms of the left shelter and the right shelter; the left cabin is internally provided with a heater, a sensing system and a centralized control system, the right cabin is internally provided with an oxygen generator and an air conditioner, the sensing system comprises an oxygen concentration detector, a smoke alarm, a temperature and humidity sensor and a meteorological instrument, and the upper wall of the right cabin is also provided with ventilation equipment; the ventilation apparatus includes: the device comprises a shielding plate, a filter screen framework assembly, a first filter screen, a main body, a dust collecting box, a second filter screen, a traction rod, a balancing weight, a driving rod, a rotating motor, a ventilation fan, a driving shaft, a first sand-proof impeller, a second sand-proof impeller, a ventilation motor and a driven shaft; wherein first sand control impeller includes first blade, and second sand control impeller includes the second blade, filter screen skeleton subassembly includes: the main body is provided with a first channel, a second channel and a guide plate;
the rotating motor can drive the shielding plate to rotate upwards relative to the upper wall of the right cabin so as to open the shielding plate, and the specific driving mode is as follows: the rotating motor drives the driving rod to rotate, the driving rod drives the traction rod to move, and the traction rod drives the shielding plate to rotate; the drive rod is provided with the balancing weight so as to maintain balance when the shielding plate is opened; in the opening state, the included angle between the shielding plate and the upper wall of the right cabin is more than 30 degrees and less than 60 degrees;
as shown in the figure: one end of the first filter screen is connected to the shielding plate, and the other end of the first filter screen is connected to the upper wall of the right cabin; the upper connecting rods and the lower connecting rods are rotatably connected through the middle rotating piece, the upper connecting rods are connected to the shielding plate through the upper rotating piece, the lower connecting rods are connected to the upper wall of the right cabin through the lower rotating piece, at least two upper connecting rods are arranged, every two upper connecting rods are connected through the upper cross rod, at least two lower connecting rods are connected through the lower cross rod, the upper cross rod is provided with the upper touch panel, the upper touch panel is a circular plate, the lower cross rod is provided with the lower touch panel, the lower touch panel is a circular plate, and the diameter of the upper touch panel is larger than that of the lower touch panel; the upper connecting rod and the lower connecting rod support the first filter screen when being unfolded;
the included angle between the ventilating fan and the upper wall of the right cabin is smaller than 90 degrees, the ventilating motor drives the driving shaft to rotate, the driving shaft drives the ventilating fan to rotate, the driving shaft is connected with the driven shaft, the driven shaft is provided with the first sand-proof impeller and the second sand-proof impeller, the ventilating fan, the second sand-proof impeller and the first sand-proof impeller are sequentially arranged, the distance between the ventilating fan and the second sand-proof impeller is larger than the distance between the first sand-proof impeller and the second sand-proof impeller, the number of the first blades and the number of the second blades are five, the first blades and the second blades are arranged in a staggered mode, each first blade and each second blade comprise an overlapping area, and each first blade and each second blade corresponding to the overlapping area are provided with a vent hole; the second filter screen is arranged above the ventilation fan;
as shown in the figure: the second channel is used for receiving impurities falling between the first blade and the second blade, the first channel is used for receiving the impurities blocked in front of the first blade, the diameter of the inlet of the first channel is larger than that of the inlet of the second channel, and the first channel and the second channel are both contracted and extended in diameter; the inlet edge of the first channel is provided with the guide plate; the first channel and the second channel are communicated with the dust collecting box; the dust collecting box is detachably connected with the main body.
As shown in the figure: the upper connecting rod and the lower connecting rod are respectively telescopic loop bars. The draw bar is a telescopic loop bar. The surfaces of the upper touch plate, the lower touch plate and the first filter screen which are adjacent are cambered surfaces. The guide plate is a conical plate. The driving shaft is detachably connected with the driven shaft. The lower surface of the dust collecting box is an arc surface. The number of the vent holes on each first blade is four. The balancing weight is a spherical block. The number of the vent holes on each second blade is six.
The above detailed description is specific to possible embodiments of the present invention, and the embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An extended shelter system, comprising: the shelter system comprises a left shelter, a right shelter and a middle shelter, the left shelter and the right shelter can be expanded or stored relative to the middle shelter, and foldable support legs are arranged at the bottoms of the left shelter and the right shelter; the left cabin is internally provided with a heater, a sensing system and a centralized control system, the right cabin is internally provided with an oxygen generator and an air conditioner, the sensing system comprises an oxygen concentration detector, a smoke alarm, a temperature and humidity sensor and a meteorological instrument, and the upper wall of the right cabin is also provided with ventilation equipment; the ventilation apparatus includes: the device comprises a shielding plate, a filter screen framework assembly, a first filter screen, a main body, a dust collecting box, a second filter screen, a traction rod, a balancing weight, a driving rod, a rotating motor, a ventilation fan, a driving shaft, a first sand-proof impeller, a second sand-proof impeller, a ventilation motor and a driven shaft; wherein first sand control impeller includes first blade, and second sand control impeller includes the second blade, filter screen skeleton subassembly includes: the main body is provided with a first channel, a second channel and a guide plate;
the rotating motor can drive the shielding plate to rotate upwards relative to the upper wall of the right cabin so as to open the shielding plate, and the specific driving mode is as follows: the rotating motor drives the driving rod to rotate, the driving rod drives the traction rod to move, and the traction rod drives the shielding plate to rotate; the drive rod is provided with the balancing weight so as to maintain balance when the shielding plate is opened; in the opening state, the included angle between the shielding plate and the upper wall of the right cabin is more than 30 degrees and less than 60 degrees;
one end of the first filter screen is connected to the shielding plate, and the other end of the first filter screen is connected to the upper wall of the right cabin; the upper connecting rods and the lower connecting rods are rotatably connected through the middle rotating piece, the upper connecting rods are connected to the shielding plate through the upper rotating piece, the lower connecting rods are connected to the upper wall of the right cabin through the lower rotating piece, at least two upper connecting rods are arranged, every two upper connecting rods are connected through the upper cross rod, at least two lower connecting rods are connected through the lower cross rod, the upper cross rod is provided with the upper touch panel, the upper touch panel is a circular plate, the lower cross rod is provided with the lower touch panel, the lower touch panel is a circular plate, and the diameter of the upper touch panel is larger than that of the lower touch panel; the upper connecting rod and the lower connecting rod support the first filter screen when being unfolded;
the included angle between the ventilating fan and the upper wall of the right cabin is smaller than 90 degrees, the ventilating motor drives the driving shaft to rotate, the driving shaft drives the ventilating fan to rotate, the driving shaft is connected with the driven shaft, the driven shaft is provided with the first sand-proof impeller and the second sand-proof impeller, the ventilating fan, the second sand-proof impeller and the first sand-proof impeller are sequentially arranged, the distance between the ventilating fan and the second sand-proof impeller is larger than the distance between the first sand-proof impeller and the second sand-proof impeller, the number of the first blades and the number of the second blades are five, the first blades and the second blades are arranged in a staggered mode, each first blade and each second blade comprise an overlapping area, and each first blade and each second blade corresponding to the overlapping area are provided with a vent hole; the second filter screen is arranged above the ventilation fan;
the second channel is used for receiving impurities falling between the first blade and the second blade, the first channel is used for receiving the impurities blocked in front of the first blade, the diameter of the inlet of the first channel is larger than that of the inlet of the second channel, and the first channel and the second channel are both contracted and extended in diameter; the inlet edge of the first channel is provided with the guide plate; the first channel and the second channel are communicated with the dust collecting box; the dust collecting box is detachably connected with the main body.
2. An extended shelter system as claimed in claim 1 wherein: the upper connecting rod and the lower connecting rod are respectively telescopic loop bars.
3. An extended shelter system as claimed in claim 1 wherein: the draw bar is a telescopic loop bar.
4. An extended shelter system as claimed in claim 1 wherein: the surfaces of the upper touch plate, the lower touch plate and the first filter screen which are adjacent are cambered surfaces.
5. An extended shelter system as claimed in claim 1 wherein: the guide plate is a conical plate.
6. An extended shelter system as claimed in claim 1 wherein: the driving shaft is detachably connected with the driven shaft.
7. An extended shelter system as claimed in claim 1 wherein: the lower surface of the dust collecting box is an arc surface.
8. An extended shelter system as claimed in claim 1 wherein: the number of the vent holes on each first blade is four.
9. An extended shelter system as claimed in claim 1 wherein: the balancing weight is a spherical block.
10. An extended shelter system as claimed in claim 8 wherein: the number of the vent holes on each second blade is six.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010784484.9A CN111910965B (en) | 2020-08-06 | 2020-08-06 | Extension formula shelter system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010784484.9A CN111910965B (en) | 2020-08-06 | 2020-08-06 | Extension formula shelter system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111910965A CN111910965A (en) | 2020-11-10 |
| CN111910965B true CN111910965B (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010784484.9A Active CN111910965B (en) | 2020-08-06 | 2020-08-06 | Extension formula shelter system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2547795Y (en) * | 2002-06-29 | 2003-04-30 | 黄邱朝 | Multifunctional container-expanded cap movable dwelling |
| CN200955199Y (en) * | 2006-10-10 | 2007-10-03 | 苏州江南航天机电工业公司 | Enlarged cabin |
| CN101644078A (en) * | 2009-07-30 | 2010-02-10 | 河南华阳装备制造有限公司 | Integral drawing-type expanding shelter |
| CN207865548U (en) * | 2018-02-11 | 2018-09-14 | 重庆戒客科技有限公司 | A kind of shared Sleeping capsule that fresh air is provided |
| CN109945337A (en) * | 2017-12-20 | 2019-06-28 | 青岛道一空优科技有限公司 | A kind of body-building oxygen cabin with air cleaning and fresh air ventilating system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9121617B2 (en) * | 2012-01-20 | 2015-09-01 | Berg Companies, Inc. | Expandable shelter HVAC systems |
-
2020
- 2020-08-06 CN CN202010784484.9A patent/CN111910965B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2547795Y (en) * | 2002-06-29 | 2003-04-30 | 黄邱朝 | Multifunctional container-expanded cap movable dwelling |
| CN200955199Y (en) * | 2006-10-10 | 2007-10-03 | 苏州江南航天机电工业公司 | Enlarged cabin |
| CN101644078A (en) * | 2009-07-30 | 2010-02-10 | 河南华阳装备制造有限公司 | Integral drawing-type expanding shelter |
| CN109945337A (en) * | 2017-12-20 | 2019-06-28 | 青岛道一空优科技有限公司 | A kind of body-building oxygen cabin with air cleaning and fresh air ventilating system |
| CN207865548U (en) * | 2018-02-11 | 2018-09-14 | 重庆戒客科技有限公司 | A kind of shared Sleeping capsule that fresh air is provided |
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| Publication number | Publication date |
|---|---|
| CN111910965A (en) | 2020-11-10 |
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