CN115258318A - High-temperature inflating device and method - Google Patents
High-temperature inflating device and method Download PDFInfo
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- CN115258318A CN115258318A CN202210769761.8A CN202210769761A CN115258318A CN 115258318 A CN115258318 A CN 115258318A CN 202210769761 A CN202210769761 A CN 202210769761A CN 115258318 A CN115258318 A CN 115258318A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000005086 pumping Methods 0.000 claims abstract description 40
- 238000007789 sealing Methods 0.000 claims abstract description 35
- 239000007789 gas Substances 0.000 claims abstract description 30
- 238000001035 drying Methods 0.000 claims abstract description 26
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 21
- 230000001681 protective effect Effects 0.000 claims abstract description 12
- 239000011261 inert gas Substances 0.000 claims abstract description 5
- 238000005273 aeration Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 14
- 238000003384 imaging method Methods 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 210000000540 fraction c Anatomy 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 229910052704 radon Inorganic materials 0.000 description 1
- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B63/00—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged
- B65B63/08—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for heating or cooling articles or materials to facilitate packaging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
- B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B65/00—Details peculiar to packaging machines and not otherwise provided for; Arrangements of such details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/14—Sealings between relatively-stationary surfaces by means of granular or plastic material, or fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention relates to a high-temperature inflating device and method, and belongs to the technical field of drying and inflating. The device comprises: the device comprises an oven, a vacuum pump, an inflation bottle, a switch I, a switch II and a sealing tube; the oven is used for drying the inflated product, and the sealing pipe is a gas passage and is communicated with the inflated product; the vacuum pump is communicated with the sealing pipe through a pipeline provided with a switch I and is used for pumping negative pressure to the inflated product; the inflation bottle is communicated with the sealing tube through a pipeline provided with a switch II; the inflation bottle is used for providing protective gas for the inflated product; the protective gas is inert gas or nitrogen. The method comprises the steps of drying the aerated product through an oven before and during aeration, and determining the actual times of aeration through a specific logarithmic function and a specific method. The device can realize good removal of moisture in the product; the method can still realize good drying of the product under definite times of air pumping and inflating, and simplifies the air pumping and inflating process.
Description
Technical Field
The invention relates to a high-temperature inflating device and method, and belongs to the technical field of drying and inflating.
Background
Based on the reliability requirements of aviation and aerospace products, such products generally have airtight requirements, and in order to ensure that the gas inside the products is dry and reduce the possibility of mold breeding, inert gas or nitrogen is generally filled into the products (the process is simply referred to as "inflation"), and particularly for imaging products, the internal humidity of the imaging products is controlled more strictly.
There are two conventional methods of aerating products: the first is to directly aerate the product at normal temperature; the second is to pump a certain negative pressure to the product by using a vacuum pump at normal temperature and then re-inflate, which is simply referred to as air pumping and inflating. Although the two methods can reduce the air content and the air humidity inside the product, the moisture in the devices inside the product or in the lines cannot be effectively removed, and further the use of the product is affected, such as an imaging product, if the moisture in the product cannot be effectively removed, the imaging quality is affected, and particularly, the moisture in the product has a great effect on the imaging quality of the imaging product at low temperature. At present, in order to achieve the effect of drying products, the inflating time can only be increased, so that the production efficiency is reduced, and the labor cost is wasted. Especially, when the product is debugged and assembled at different temperatures, such as the debugged temperature of the product is lower than the assembly temperature, the surface of the product and the internal parts thereof will bead, and the above-mentioned conventional method of aeration can not achieve good removal of water in the product.
In addition, in the art, for the process of inflating or deflating the product, the number of times of inflating or deflating is not planned, and is usually given by feeling or at will. The problem of doing so mainly has two aspects, on one hand, the number of times of aerifing has arrived, but the drying effect of product inside is not good, still can influence the use of product, and this kind of condition still need continue to rely on the sensation to give again and aerify or take out the gas number of times, if the drying effect of product still is not good, still need continue to aerify, so circulate, work efficiency is very low. On the other hand, in order to dry the product as soon as possible, too many times of inflation or air pumping are set, and resource waste is caused.
Disclosure of Invention
In view of this, in order to solve the technical problem that a better drying effect cannot be achieved for a product in the prior art, and in addition, to solve the technical problem that how many times of air pumping and inflating cannot be achieved in the prior art to achieve good drying of the product, the present invention aims to provide a high-temperature air charging device and a method, wherein the device can achieve good removal of moisture in the product, improve production efficiency, and save labor cost; the method can define the times required by pumping and inflating on the basis of known corresponding indexes, can still realize good drying effect on the product under the defined pumping and inflating times, and avoids the complexity and resource waste caused by randomly setting the times.
In order to achieve the purpose of the invention, the following technical scheme is provided.
A high temperature inflator, comprising: the device comprises an oven, a vacuum pump, an inflation bottle, a switch I, a switch II and a sealing tube;
placing an inflated product in the oven, wherein the oven is used for drying the inflated product;
the sealing tube is a gas passage and is communicated with the inflated product;
the vacuum pump is communicated with the sealing pipe through a pipeline provided with a switch I and is used for pumping negative pressure to the inflated product; the switch I is used for controlling the on-off of a pipeline where the vacuum pump is located;
the inflation bottle is communicated with the sealing tube through a pipeline provided with a switch II; the inflation bottle is used for providing protective gas for the inflated product; the switch II is used for controlling the on-off of the pipeline where the inflation bottle is located.
Furthermore, a pressure gauge is further arranged on the sealing tube to display the pressure of the sealing tube.
Further, still be equipped with the relief valve on the sealed tube, when the gas pressure value reaches the pressure value that the relief valve set up in the sealed tube, deflate through the relief valve is automatic.
Further, the protective gas is inert gas or nitrogen; the inert gas is helium, neon, argon, krypton, xenon or radon.
The invention discloses a high-temperature inflation method, which adopts a high-temperature inflation device to inflate an inflated product, and comprises the following steps:
step one, a switch I and a switch II are both in an off state, and an aerated product is dried by using an oven, wherein the temperature, the relative humidity and the time of the oven are determined according to application requirements;
step two, after the set time is reached, the oven continues to work, the temperature and the relative humidity are not changed, a switch I is opened, a vacuum pump is used for pumping negative pressure to the inflated product, and when the pressure in the sealing pipe reaches a set value A, the vacuum pump and the switch I are closed;
step three, turning on a switch II, inflating the inflated product by using an inflation bottle, and turning off the inflation bottle and the switch II when the pressure in the sealing pipe reaches a set value B; setting the pressure value of a pressure gauge at normal pressure to be 0; the pressure values A and B can be set according to specific conditions, and the unit of the set value A and the unit of the set value B are bar;
step four, repeating the step two and the step three until the total number of the pumping and inflating reaches N, and finishing the pumping and inflating;
recording the completion of one negative pressure pumping and one inflation as one pumping and inflation, setting the volume fraction of the protective gas in the inflated product to be C, and predicting the total times n of pumping and inflation by the following calculation formula:
when N is an integer, the total number of times of actually pumping and inflating N = N;
when N is a non-integer, the total number of actual pump shots N = the integer part of N +1.
Advantageous effects
(1) The invention provides a high-temperature inflating device, wherein an inflated product is placed in an oven, moisture in devices or lines in the inflated product and water drops which can be condensed on the surface of a part can be evaporated into water vapor to be suspended in the inflated product due to the high temperature of the oven, gas containing the water vapor can be pumped out by using a vacuum pump, a protective gas is filled into the inflated product by using an inflating bottle, and after repeated negative pressure pumping and inflating processes, the interior of the inflated product can achieve a good drying effect, so that the product has good application performance, for example, the imaging product has the advantage of high imaging quality under the condition of good drying effect.
(2) The invention provides a high-temperature inflating device, wherein a pressure gauge arranged on a sealing pipe is used for displaying the gas pressure in the sealing pipe, so that a worker can know the pressure condition in the sealing pipe conveniently.
(3) The invention provides a high-temperature inflating device, wherein a sealing tube is provided with a pressure relief valve, the pressure relief valve can set a pressure value, and when the gas pressure value in the sealing tube reaches the pressure value set by the pressure relief valve, the gas can automatically deflate through the pressure relief valve, so that an inflated product is prevented from being damaged due to overlarge pressure.
(4) The invention provides a high-temperature inflation method, which can obtain determined times of inflation and deflation through a formula provided by the invention on the basis of knowing a pressure value reached in each air exhaust, a pressure value reached in each air inflation and the content of protective gas in an inflated product, and can know through practice that moisture in the inflated product can be well removed after the inflation and deflation are carried out through the times calculated through the formula, so that the inflated product has good application performance. The method is simple because the repeated exploration of negative pressure pumping and air inflation is not needed, and the drying effect of the product can be ensured.
Drawings
Fig. 1 is a schematic view of the high temperature inflator.
Wherein, 1-drying oven, 2-aerated product, 3-pressure gauge, 4-vacuum pump, 5-aeration bottle, 6-switch I, 7-switch II, 8-sealing tube, 9-pressure release valve.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
Example 1
As shown in fig. 1, the high temperature inflator includes: oven 1, manometer 3, vacuum pump 4, gas bottle 5, switch I6, switch II 7, sealed tube 8 and relief valve 9.
Inside the oven 1, the inflated product 2 is placed, and the oven 1 can set the corresponding temperature, humidity and time to dry the inflated product 2.
The sealing tube 8 is a gas passage and is communicated with the aerated product 2; the vacuum pump 4 is communicated with the sealing pipe 8 through a pipeline provided with a switch I6, and the vacuum pump 4 is used for pumping negative pressure to the inflated product 2; the switch I6 is used for controlling the on-off of the pipeline where the vacuum pump 4 is located.
The inflation bottle 5 is communicated with a sealing pipe 8 through a pipeline provided with a switch II 7; the inflation bottle 5 is used for providing protective gas for the inflated product 2, and the protective gas is nitrogen; the switch II 7 is used for controlling the on-off of the pipeline where the inflation bottle 5 is located.
The sealing pipe 8 is also provided with a pressure gauge 3 and a pressure release valve 9; the pressure gauge 3 is used for constantly displaying the gas pressure in the sealing pipe 8; the pressure relief valve 9 can set a pressure value, and when the gas pressure value in the sealing pipe 8 reaches the pressure value set by the pressure relief valve 9, the gas can be automatically released through the pressure relief valve 9, so that the damage to the inflated product 2 caused by overlarge pressure is prevented.
The working principle of the high-temperature inflating device in the embodiment is as follows: the product 2 to be inflated is placed in the oven 1, and the high temperature of the oven 1 makes the moisture in the devices or in the wire bundles inside the product 2 to be inflated, and the water drops which may condense on the surface of the parts, evaporate into water vapor suspended inside the product. In addition, the vacuum pump 4 is matched for pumping out gas containing water vapor, the inflatable product 2 is filled with nitrogen by using the inflation bottle 5, and the nitrogen filling is repeated for a plurality of times, so that the interior of the inflatable product 2 can achieve a good drying effect.
Example 2
A high-temperature inflation method, which is performed by using the high-temperature inflation device of example 1 to perform nitrogen inflation, and specifically comprises the following steps:
step one, the switch I6 and the switch II 7 are both in an off state, the oven 1 is used for drying the aerated product 2, the temperature, the humidity and the time of the oven 1 are determined according to application requirements, the temperature of the oven 1 is 60 ℃, the relative humidity is 10%, and the drying time is 4h. The inflated product 2 of the present embodiment is an image forming type product.
Step two, after the drying is carried out for the set time, the operation of the drying oven 1 is continuously kept, the temperature and the relative humidity are the same as those in the step one, a switch I6 is opened, a vacuum pump 4 is used for pumping negative pressure to the aerated product 2, when the pressure value displayed by a pressure gauge 3 is a set value A, the vacuum pump 4 is closed, and meanwhile, the switch I6 is closed; the setting value A can be set according to specific conditions, and the setting value A of the embodiment is-0.3 bar. The pressure value of the pressure gauge 3 of the embodiment at normal pressure is 0; when negative pressure is pumped, the pressure value displayed by the pressure gauge 3 is negative; when positive pressure is charged, the pressure value displayed by the pressure gauge 3 is a positive number, and the unit displayed by the pressure gauge 3 is bar.
Step three, after the primary negative pressure pumping is finished, opening a switch II 7, filling nitrogen into the inflated product 2 by using an inflation bottle 5, and closing the nitrogen bottle 5 and the switch II 7 when the pressure value displayed by a pressure gauge 3 is a set value B; the setting value B may be set according to specific situations, and the setting value B of the present embodiment is 0.3bar.
Step four, repeating the step two and the step three, recording that the completion of one-time negative pressure pumping and one-time nitrogen filling is one-time nitrogen pumping and filling, simultaneously setting the volume fraction C =95% of the nitrogen in the inflated product 2, and calculating the estimated total times n of nitrogen pumping and filling according to the following formula:
in this embodiment, the volume fraction of nitrogen in the inflated product 2 is set to 95%, and it can be known from the formula calculation that the total number of times N =4.8 for pumping nitrogen is expected, and then the total number of times N =4+1=5 for actually pumping air.
And step five, when the total times of pumping and inflating reaches N =5 times, closing the inflating bottle 5 and the switch II 7, then closing the oven 1, and ending the nitrogen filling.
After the nitrogen charging is finished, the imaging quality test is carried out on the aerated product 2 after the nitrogen charging at the temperature of 45 ℃ below zero, and the test result shows that the aerated product 2 has clear imaging and high imaging quality. Further, the inflatable product 2 can remove moisture in the inflatable product 2 by adopting the high-temperature inflating device in the embodiment 1, so that the product is ensured to have good application effect; moreover, the method of the embodiment 2 calculates the times of pumping and inflating required by the inflated product 2, thereby ensuring that the inflated product 2 can be dried well, reducing the moisture in the product and having simple operation.
Comparative example 1
Unlike example 2, without oven 1, the rest of the operation was the same as example 2.
After the nitrogen charging is finished, the aerated product 2 charged with nitrogen in the comparative example is subjected to imaging quality test at the temperature of 45 ℃ below zero, and the test result shows that the aerated product 2 has fuzzy imaging and low imaging quality.
In addition, the number of times of pumping and inflating is increased by 1-2 times, and after the test, the image of the inflated product 2 is still blurred.
The above results show that, under the condition without an oven, the drying effect of the inflated product 2 is not good for the same number of times of air pumping and inflating, which may affect the application of the inflated product 2, and the inflated product 2 still cannot have a good drying effect even if the number of times of air pumping and inflating is simply increased.
The present invention includes, but is not limited to, the above embodiments, and any equivalent substitutions or partial modifications made under the principle of the present invention should be considered within the scope of the present invention.
Claims (5)
1. A high temperature inflator characterized by: the method comprises the following steps: the device comprises a drying oven (1), a vacuum pump (4), an inflation bottle (5), a switch I (6), a switch II (7) and a sealing tube (8);
an aerated product (2) is placed in the oven (1), and the oven (1) is used for drying the aerated product (2);
the sealing pipe (8) is a gas passage and is communicated with the aerated product (2);
the vacuum pump (4) is communicated with the sealing pipe (8) through a pipeline provided with a switch I (6) and is used for pumping negative pressure to the aerated product (2); the switch I (6) is used for controlling the on-off of a pipeline where the vacuum pump (4) is located;
the inflation bottle (5) is communicated with the sealing tube (8) through a pipeline provided with a switch II (7); the inflation bottle (5) is used for providing protective gas for the inflated product (2); the switch II (7) is used for controlling the on-off of the pipeline where the inflation bottle (5) is located.
2. A high temperature inflator according to claim 1 wherein: and the sealing pipe (8) is also provided with a pressure gauge (3) for displaying the pressure of the sealing pipe (8).
3. A high temperature inflator according to claim 1 or 2 wherein: the sealing pipe (8) is further provided with a pressure release valve (9), and when the gas pressure value in the sealing pipe (8) reaches the pressure value set by the pressure release valve (9), the gas is automatically released through the pressure release valve (9).
4. A high temperature inflator according to claim 1 wherein: the protective gas is inert gas or nitrogen.
5. A high-temperature inflation method is characterized in that: use of a high temperature inflator according to any one of claims 1 to 4 to inflate an inflatable product (2), the method comprising the steps of:
step one, setting the temperature, the relative humidity and the time of the oven (1) in a closed state of the switch I (6) and the switch II (7), and drying the aerated product (2) by using the oven (1);
step two, after the set time is reached, the oven (1) continues to work, the temperature and the relative humidity are unchanged, the switch I (6) is opened, the vacuum pump (4) is used for pumping negative pressure to the aerated product (2), and when the pressure in the sealing tube (8) reaches a set value A, the vacuum pump (4) and the switch I (6) are closed;
step three, opening a switch II (7), inflating the inflated product (2) by using an inflation bottle (5), and closing the inflation bottle (5) and the switch I (7) when the pressure in the sealing pipe (8) reaches a set value B; setting the pressure value of the sealing pipe (8) at normal pressure to be 0; the unit of the set value A and the unit of the set value B are both bar;
step four, repeating the step two and the step three until the total times of air pumping and filling are N, and finishing air pumping and filling;
recording that one negative pressure pumping and one inflation are completed as one pumping and inflation, and setting the volume fraction of the protective gas in the inflated product (2) to be C, the calculation formula of the total number n of the expected pumping and inflation is as follows:
when N is an integer, the total number of actual pumping and inflating N = N;
when N is a non-integer, the total number of actual pump shots N = the integer part of N +1.
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| CN202210769761.8A CN115258318A (en) | 2022-06-30 | 2022-06-30 | High-temperature inflating device and method |
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| CN202210769761.8A CN115258318A (en) | 2022-06-30 | 2022-06-30 | High-temperature inflating device and method |
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| CN112097468A (en) * | 2020-09-10 | 2020-12-18 | 北京沄汇智能科技有限公司 | Vacuum dryer and method |
| CN214493465U (en) * | 2021-04-15 | 2021-10-26 | 重庆前卫科技集团有限公司 | Explosion-proof evacuation nitrogen charging device |
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