CN113521477B - Medical oxygen supply mixing supercharger - Google Patents
Medical oxygen supply mixing supercharger Download PDFInfo
- Publication number
- CN113521477B CN113521477B CN202110802250.7A CN202110802250A CN113521477B CN 113521477 B CN113521477 B CN 113521477B CN 202110802250 A CN202110802250 A CN 202110802250A CN 113521477 B CN113521477 B CN 113521477B
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- CN
- China
- Prior art keywords
- oxygen
- pressure
- low
- pressure tank
- switching
- 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.)
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Links
- 239000001301 oxygen Substances 0.000 title claims abstract description 128
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 128
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 127
- 230000007246 mechanism Effects 0.000 claims abstract description 37
- 238000004321 preservation Methods 0.000 claims description 26
- 238000007789 sealing Methods 0.000 claims description 21
- 239000007789 gas Substances 0.000 claims description 7
- 238000010030 laminating Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 206010002091 Anaesthesia Diseases 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 230000037005 anaesthesia Effects 0.000 description 3
- 230000000241 respiratory effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002980 postoperative effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/1005—Preparation of respiratory gases or vapours with O2 features or with parameter measurement
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61D—VETERINARY INSTRUMENTS, IMPLEMENTS, TOOLS, OR METHODS
- A61D7/00—Devices or methods for introducing solid, liquid, or gaseous remedies or other materials into or onto the bodies of animals
- A61D7/04—Devices for anaesthetising animals by gases or vapours; Inhaling devices
Abstract
The invention discloses a medical oxygen supply mixing supercharger, which comprises: the rack is placed on the bottom surface of the pet hospital; the low-pressure tank is arranged in the rack, so that oxygen produced by oxygen can enter the low-pressure tank; the high-pressure tank is arranged at one side of the low-pressure tank, an oxygen compressor capable of compressing low-pressure oxygen into high-pressure oxygen is arranged between the low-pressure tank and the high-pressure tank, and the oxygen in the low-pressure tank is compressed into high-pressure oxygen in the high-pressure tank through the oxygen compressor; the switching mechanism is arranged at the outlet ends of the high-pressure tank and the low-pressure tank, and is used for switching the oxygen conveying mechanism into low pressure or high pressure.
Description
Technical Field
The invention relates to the technical field of pet medical appliances, in particular to a medical oxygen supply mixing supercharger.
Background
At present, high-concentration oxygen is needed for supplying oxygen for pets during and after the operation. Oxygen cylinders are mostly used in current pet hospitals to provide oxygen, and the reason for this is summarized in that high-pressure oxygen is needed in the pipeline to ensure long-distance transmission. The output pressure of the oxygen generator on the market is usually 20-40kpa, which is far less than 350kpa-600kpa required by the respiratory anesthesia machine during the operation. And the separate oxygenerator supplies post-operative ICU monitoring can lead to insufficient space (because pet ICU monitoring is typically stacked, there is no extra space to place the oxygenerator) where hospitals wish the oxygenerator to make the same amount of oxygen as the cylinder to supply the required equipment through tubing, which is not done by the oxygenerator alone. For this purpose, we propose a medical oxygen supply mixing supercharger.
Disclosure of Invention
The invention aims to provide a medical oxygen supply mixing supercharger, which solves the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: a medical oxygen-supplying mixing supercharger, comprising:
the rack is placed on the bottom surface of the pet hospital;
the low-pressure tank is arranged in the rack, so that oxygen produced by oxygen can enter the low-pressure tank;
the high-pressure tank is arranged at one side of the low-pressure tank, an oxygen compressor capable of compressing low-pressure oxygen into high-pressure oxygen is arranged between the low-pressure tank and the high-pressure tank, and the oxygen in the low-pressure tank is compressed into high-pressure oxygen in the high-pressure tank through the oxygen compressor;
and the switching mechanism is arranged at the outlet ends of the high-pressure tank and the low-pressure tank, and the oxygen conveying mechanism is switched into low pressure or high pressure through the switching mechanism.
Preferably, the switching mechanism comprises a switching shell arranged on one side of the frame, a closed block capable of switching the high-voltage interface and the low-voltage interface respectively is arranged in the switching shell, a screw is arranged in the closed block, a motor capable of pushing the screw to rotate is arranged at the end of the screw, and the closed block is switched between the high-voltage interface and the low-voltage interface through rotation of the motor.
Preferably, an axial flow fan capable of radiating heat when the oxygen compressor works is arranged on one side of the frame, and a conveying mechanism capable of pushing wind power to the switching mechanism is arranged between the axial flow fan and the switching mechanism.
Preferably, the conveying mechanism comprises a closed cover arranged between the oxygen compressor and the axial flow fan, a heat preservation cover is arranged on the outer side of the switching shell, the heat preservation cover is communicated with the sealing cover through a pipeline, and hot air in the closed cover is conveyed into the heat preservation cover through the axial flow fan, so that oxygen exhausted from the high-pressure tank is heated.
Preferably, the heat preservation cover is located pipeline exit position department and is equipped with two baffles, and two the baffle is the arc setting, the air vent that is used for gaseous outflow has been seted up at the top of heat preservation cover, and when the air current flows from pipeline exit, the baffle blocks the air current to laminating switch shell surface, and then the air current discharges the heat preservation cover from air vent position department.
Preferably, one side of the sealing block is provided with a first electrode plate, the inner wall of the switching shell is provided with a second electrode plate which can be mutually attached to the first electrode plate, and the first electrode plate is contacted with the second electrode plate through movement of the sealing block, so that the axial flow fan is electrified to work.
Preferably, the duct is connected to the top of the enclosure such that hot gas enters the duct from the top of the enclosure and such that the hot gas is completely expelled from the enclosure.
Preferably, the high pressure interface is located below the low pressure interface, so that the high pressure oxygen contacts with hot gas in the delivery mechanism, and the high pressure oxygen is heated.
Preferably, an exhaust port communicated with the switching shell is formed in one side of the closed cover, and the exhaust port is located above the low-pressure port, so that high-pressure oxygen can be in contact with hot gas.
The invention has at least the following beneficial effects:
the oxygen compressor compresses the oxygen produced by producing oxygen into high-pressure oxygen, and the switching mechanism switches the high-pressure oxygen and the low-pressure oxygen, compared with the prior art, the output pressure of the oxygen producing machine on the market is usually-kpa, and the output pressure of the oxygen producing machine can not reach kpa-kpa required by the respiratory anesthesia machine during the operation. The independent oxygenerator is used for supplying postoperative ICU monitoring, so that space is insufficient (because the ICU monitoring of pets is usually stacked, no redundant space is reserved for placing the oxygenerator), the oxygenerator can be used for supplying all needed equipment through pipelines as the oxygenerator, and the oxygenerator can not be used for supplying all needed equipment.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a view of another view of the present invention;
FIG. 3 is a partial block diagram of the present invention;
FIG. 4 is a partial cross-sectional view of the present invention;
FIG. 5 is a partial view of the switching mechanism of the present invention;
fig. 6 is a front view of the switching mechanism of the present invention.
In the figure: 1-a frame; 2-a low pressure tank; 3-an air inlet joint; 4-a high-pressure tank; 5-a switching mechanism; 51-switching shells; 52-sealing blocks; 53-screw; 54-motor; 6-an axial flow fan; 7-a conveying mechanism; 71-a closed cover; 72-a heat preservation cover; 73-piping; 74-baffle; an 8-oxygen compressor; 9-high voltage interface; 10-low voltage interface; 11-electrode sheet I; 12-electrode plate II; 13-exhaust port.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-6, the present invention provides a technical solution: a medical oxygen-supplying mixing supercharger, comprising:
the rack 1 is placed on the bottom surface of the pet hospital, and a plurality of universal wheels are arranged at the bottom of the rack 1, so that the movement of the instrument can be conveniently pushed through the universal wheels, and the use of the instrument is convenient;
the low-pressure tank 2 is arranged in the frame 1, the low-pressure tank 2 is fixedly connected with the frame 1, so that oxygen produced by oxygen can enter the low-pressure tank 2, one side of the frame 1 is provided with an air inlet joint 3 which can be connected with an oxygenerator, and then the oxygen produced by oxygen can be conveniently conveyed into the low-pressure tank 2 for storage, and the low-pressure tank 2 stores the low-pressure oxygen for standby, so that the oxygen can be provided for the high-pressure tank 4 on one hand and can be directly output for use on the other hand;
the high-pressure tank 4 is arranged on one side of the low-pressure tank 2, an oxygen compressor 8 capable of compressing low-pressure oxygen into high-pressure oxygen is arranged between the low-pressure tank 2 and the high-pressure tank 4, the oxygen in the low-pressure tank 2 connected through an air pipe is compressed into a high-pressure state by the oxygen compressor 8, and then is conveyed into the high-pressure tank 4 through the air pipe, the oxygen in the low-pressure tank 2 is compressed into high-pressure oxygen in the high-pressure tank 4 through the oxygen compressor 8, and the oxygen pressure meets the requirement of respiratory anesthesia, so that the pet in a pet hospital can be conveniently used;
the switching mechanism 5 is arranged at the outlet ends of the high-pressure tank 4 and the low-pressure tank 2, the oxygen conveying mechanism 7 is switched into low pressure or high pressure through the switching mechanism 5, and the switching mechanism 5 can switch between high-pressure oxygen and low-pressure oxygen, so that different requirements of a pet hospital are facilitated.
In addition, the device adopts an oxygen compressor to compress high-concentration oxygen. The low-pressure oxygen (20-40 kpa) is compressed by an oxygen compressor to reach the pressure (350 kpa-600 kpa) required by practical use. The device has high-pressure oxygen and low-pressure oxygen output, and can meet various use requirements of customers.
The plant belt automatically controls the operation of the oxygen compressor to produce high pressure oxygen when the customer is using high pressure oxygen. When the customer does not use high-pressure oxygen, the oxygen compressor stops working equipment to enter a standby state, and rapidly enters a working state when being used again.
When the high-voltage/low-voltage switching key is pressed, the output high-voltage low-voltage oxygen can be switched to meet the application requirements of other occasions.
The device also has an automatic oxygen concentration monitoring function. The output oxygen concentration can be monitored and an alarm can be given when the oxygen concentration is lower than a safety set value (the set values of 80%, 85% and 90% can be freely selected).
The switching mechanism 5 comprises a switching shell 51 arranged on one side of the frame 1, the switching shell 51 is in a sealing state to prevent oxygen leakage, a sealing block 52 capable of switching the high-pressure port 9 and the low-pressure port 10 respectively is arranged in the switching shell 51, the sealing block 52 is slidably connected with the inner wall of the switching shell 51, the sealing block 52 can slide between the low-pressure port 10 and the high-pressure port 9, the sealing block 52 can seal the high-pressure port 9 or the low-pressure port 10 after being attached, a screw 53 is arranged in the sealing block 52, the screw 53 is in threaded connection with the sealing block 52, a motor 54 capable of pushing the screw 53 to rotate is arranged at the end of the screw 53, the motor 54 is fixedly connected with the screw 53, and through rotation of the motor 54, the sealing block 52 is enabled to switch between the high-pressure port 9 and the low-pressure port 10, the screw 53 is pushed to rotate, the sealing block 52 can slide in the switching shell 51, and the sealing block 52 can seal the low-pressure port 10 or the high-pressure port 9 respectively, and switching between the low-pressure oxygen and the high-pressure port 9 is facilitated.
An axial flow fan 6 which can radiate heat when the oxygen compressor 8 works is arranged on one side of the frame 1, the axial flow fan 6 is arranged in the frame 1, the axial flow fan 6 is aligned to the position of the oxygen compressor 8, a conveying mechanism 7 which can push wind force to the switching mechanism 5 is arranged between the axial flow fan 6 and the switching mechanism 5, when the oxygen compressor 8 compresses low-pressure oxygen, air near the oxygen compressor 8 is heated at the moment by compressing and releasing heat, the axial flow fan 6 blows air outside the oxygen compressor 8 to the position of the switching mechanism 5, when high-pressure oxygen is exhausted from the switching mechanism 5, because the high-pressure oxygen is exhausted from a pipe, the air pressure of oxygen is reduced, oxygen expands, oxygen absorbs heat, and hot air acts on the outer side of the high-pressure interface 9 at the moment, so that the possibility that the high-pressure interface 9, the low-pressure interface 10 and the switching shell 51 are damaged by freezing can be reduced, and on the other hand, the high-pressure oxygen is heated, so that the pet breathing is more comfortable, and the pet can use.
The conveying mechanism 7 comprises a sealed cover 71 arranged between the oxygen compressor 8 and the axial flow fan 6, the sealed cover 71 wraps the oxygen compressor 8, the sealed cover 71 is fixedly connected with the frame 1, a heat preservation cover 72 is arranged on the outer side of the switching shell 51, the heat preservation cover 72 is communicated with the sealed cover through a pipeline 73, the heat preservation cover 72 wraps the switching shell 51, the heat preservation cover 72 is fixedly connected with the switching shell 51, the motor 54 is fixedly connected with the heat preservation cover 72, hot air in the sealed cover 71 is conveyed into the heat preservation cover 72 through the axial flow fan 6, oxygen exhausted from the high pressure tank 4 is heated, two ends of the pipeline 73 are fixedly connected with the sealed cover 71 and the heat preservation cover 72 respectively, when the axial flow fan 6 works, hot air located on the outer side of the oxygen compressor 8 is conducted into the heat preservation cover 72 through the pipeline 73, the hot air in the heat preservation cover 72 is in heat exchange with high-pressure oxygen outside the high-pressure joint 9, the high-pressure oxygen exhausted from the high-pressure joint 9 is heated, and therefore on the one hand, the equipment is protected, and the pet is convenient to use.
The heat preservation cover 72 is located pipeline 73 exit position department and is equipped with two baffles 74, and two baffles 74 respectively with switch shell 51 and heat preservation cover 72 fixed connection, two baffles 74 are the arc setting, be used for gaseous outflow air vent has been seted up at the top of heat preservation cover 72, when the air current flows out from pipeline 73 exit, baffle 74 blocks the air current to laminating switch shell 51 surface, and then the air current discharges heat preservation cover 72 from air vent position department, after the steam gets into heat preservation cover 72 from pipeline 73, the bottom of steam contact baffle 74, the steam presents the heliciform in the bottom arc position department of baffle 74, with the steam with switch shell 51 contact a plurality of times, again with the steam discharge from the clearance department of heat preservation cover 72 and baffle 74, the steam abundant with switch shell 51 contact, and then make things convenient for the make full use of steam, the convenience is to the heating of high-pressure oxygen, the energy saving.
One side of the airtight block 52 is provided with an electrode sheet I11, the electrode sheet I11 is fixedly connected with the airtight block 52, the inner wall of the switching shell 51 is provided with an electrode sheet II 12 which is mutually attached to the electrode sheet I11, the electrode sheet II 12 is fixedly connected with the inner wall of the switching shell 51, through the movement of the airtight block 52, the electrode sheet I11 is contacted with the electrode sheet II 12, the axial flow fan 6 is electrified to work, when the airtight block 52 is gradually separated from the high-pressure interface 9, the electrode sheet I11 is contacted with the electrode sheet II 12, at the moment, the axial flow fan 6 is electrified, hot air starts to enter the outer side of the high-pressure interface 9, the electric conduction resistance between the electrode sheet I11 and the electrode sheet II 12 is reduced along with the gradual increase of the contact area of the electrode sheet I11 and the electrode sheet II 12, at the moment, the rotating speed of the axial flow fan 6 is accelerated, on the one hand, the cooling speed of the oxygen compressor 8 is accelerated, the high-pressure oxygen is conveniently heated by the high-pressure interface 9, the high-pressure oxygen is conveniently used, the axial flow fan 6 is not rotated when the high-pressure oxygen is not used, and the energy consumption of the axial flow fan 6 is saved.
The pipeline 73 is connected at the top of the sealed cover, so that hot air enters the pipeline 73 from the top of the sealed cover, and then the hot air can be completely discharged from the sealed cover, the hot air rises upwards, the pipeline 73 is positioned at the top of the sealed cover, generated hot air can be quickly transferred into the heat preservation cover 72, and the high-pressure oxygen can be conveniently heated.
The high-pressure port 9 is located below the low-pressure port 10, so that the high-pressure oxygen is contacted with hot air in the conveying mechanism 7, and then the high-pressure oxygen is heated, and the high-pressure port 9 can be firstly contacted with the hot air in the pipeline 73, so that the high-pressure oxygen can be heated conveniently.
An exhaust port 13 communicated with the switching shell 51 is formed in one side of the closed cover 71, and the exhaust port 13 is located above the low-pressure port 10, so that high-pressure oxygen can be contacted with hot air, and when the exhaust port 13 is located above the low-pressure port 10, a larger stroke of high-pressure oxygen can be conveniently moved, so that the time of heat exchange between the high-pressure oxygen and hot air is conveniently prolonged, and the high-pressure oxygen can be conveniently heated.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A medical oxygen supply mixing supercharger, which is characterized in that: comprising the following steps:
a frame (1) placed on the bottom surface of the pet hospital;
the low-pressure tank (2) is arranged in the frame (1) and can enable oxygen produced by oxygen to enter the low-pressure tank (2); the high-pressure tank (4) is arranged on one side of the low-pressure tank (2), an oxygen compressor (8) capable of compressing low-pressure oxygen into high-pressure oxygen is arranged between the low-pressure tank (2) and the high-pressure tank (4), and the oxygen in the low-pressure tank (2) is compressed into high-pressure oxygen in the high-pressure tank (4) through the oxygen compressor (8);
the switching mechanism (5) is arranged at the outlet end of the high-pressure tank (4) and the low-pressure tank (2), the oxygen conveying mechanism (7) is switched into low pressure or high pressure through the switching mechanism (5), the switching mechanism (5) comprises a switching shell (51) arranged at one side of the frame (1), a sealing block (52) capable of switching the high-pressure port (9) and the low-pressure port (10) respectively is arranged in the switching shell (51), a screw (53) is arranged in the sealing block (52), a motor (54) capable of pushing the screw (53) to rotate is arranged at the end part of the screw (53), the rotation of the motor (54) enables the sealing block (52) to switch between the high-pressure port (9) and the low-pressure port (10), a fan (6) capable of radiating heat when the oxygen compressor (8) works is arranged at one side of the frame (1), a conveying mechanism (7) capable of pushing the high-pressure port (9) to the switching mechanism (5) is arranged between the axial flow fan (6) and the switching mechanism (5), the conveying mechanism (7) comprises a motor (54) capable of pushing the screw (53) to rotate, the axial flow fan (7) is arranged between the axial flow fan (8) and the sealing cover (72) and the sealing shell (72) through the sealing cover (72), the heat-insulating cover (72) is conveyed to the heat-insulating cover (72) through the heat in the sealed cover (71) by the axial flow fan (6), oxygen exhausted from the high-pressure tank (4) is heated, one side of the sealed block (52) is provided with an electrode slice I (11), the inner wall of the switching shell (51) is provided with an electrode slice II (12) which can be mutually attached to the electrode slice I (11), and the electrode slice I (11) is contacted with the electrode slice II (12) through the movement of the sealed block (52), so that the axial flow fan (6) is electrified to work.
2. The medical oxygen supply mixing supercharger according to claim 1, wherein: the heat preservation cover (72) is located pipeline (73) exit and is equipped with two baffles (74), two baffle (74) are the arc setting, the air vent that is used for gaseous outflow is seted up at the top of heat preservation cover (72), when air current flows from pipeline (73) exit, baffle (74) block the air current to laminating switch shell (51) surface, and then air current is discharged heat preservation cover (72) from air vent position department.
3. The medical oxygen supply mixing supercharger according to claim 2, wherein: the pipe (73) is connected to the top of the seal housing such that hot gas enters the pipe (73) from the top of the seal housing and such that the hot gas can be completely exhausted from the seal housing.
4. A medical oxygen-supplying mixing supercharger according to claim 3 wherein: the high-pressure interface (9) is positioned below the low-pressure interface (10) so that high-pressure oxygen is in contact with hot air in the conveying mechanism (7) and then heated.
5. The medical oxygen-supplying mixing supercharger of claim 4 wherein: an exhaust port (13) communicated with the switching shell (51) is formed in one side of the sealing cover (71), and the exhaust port (13) is located above the low-pressure interface (10) so that high-pressure oxygen can be in contact with hot gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110802250.7A CN113521477B (en) | 2021-07-15 | 2021-07-15 | Medical oxygen supply mixing supercharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110802250.7A CN113521477B (en) | 2021-07-15 | 2021-07-15 | Medical oxygen supply mixing supercharger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113521477A CN113521477A (en) | 2021-10-22 |
| CN113521477B true CN113521477B (en) | 2023-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110802250.7A Active CN113521477B (en) | 2021-07-15 | 2021-07-15 | Medical oxygen supply mixing supercharger |
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| CN (1) | CN113521477B (en) |
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| CN111135415A (en) * | 2020-01-08 | 2020-05-12 | 张琦 | Multifunctional medical anesthesia machine |
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2021
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| JP2001063348A (en) * | 1999-06-25 | 2001-03-13 | Denso Corp | Refrigerating cycle system |
| CN2440150Y (en) * | 2000-09-07 | 2001-07-25 | 攀枝花新钢钒股份有限公司氧气厂 | Oxygen-supplying device capable of realizing multi-stage differentical pressure operation |
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| Publication number | Publication date |
|---|---|
| CN113521477A (en) | 2021-10-22 |
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