CN113731937A - Pressure control optimization method for vacuum ultrasonic cleaning machine - Google Patents
Pressure control optimization method for vacuum ultrasonic cleaning machine Download PDFInfo
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- CN113731937A CN113731937A CN202111063818.4A CN202111063818A CN113731937A CN 113731937 A CN113731937 A CN 113731937A CN 202111063818 A CN202111063818 A CN 202111063818A CN 113731937 A CN113731937 A CN 113731937A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
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Abstract
The invention belongs to the technical field of cleaning machines, and relates to a pressure control optimization method for a vacuum ultrasonic cleaning machine, which comprises the following steps: firstly, an ultrasonic sound intensity tester is arranged on a vacuum ultrasonic cleaning machine. Secondly, the ultrasonic sound intensity tester collects a plurality of groups of internal chamber energy densities under different internal chamber pressures respectively at different working temperatures of the vacuum ultrasonic cleaning machine. And thirdly, respectively drawing a plurality of groups of inner chamber energy densities at different working temperatures under different inner chamber pressures to form a curve graph of the inner chamber energy density of each working temperature along with the change of the inner chamber pressure. And fourthly, drawing a threshold value line on the curve graph of the energy density of the inner chamber at each working temperature along with the change of the pressure of the inner chamber. And fifthly, drawing an energy density change curve chart of the inner chamber under normal pressure at different temperatures. Drawing a pressure and temperature control curve diagram in the cleaning stage of the vacuum ultrasonic cleaning machine to optimize the ultrasonic power density, so that the vacuum ultrasonic cleaning machine can achieve the optimal degassing effect and the cleaning effect at the same time.
Description
Technical Field
The invention relates to a pressure control optimization method for a vacuum ultrasonic cleaning machine, and belongs to the technical field of cleaning machines.
Background
When the existing vacuum ultrasonic cleaning machine is used for cleaning, firstly, a to-be-cleaned part is placed into cleaning liquid in a cleaning tank at normal temperature and normal pressure, the cleaning liquid permeates into the to-be-cleaned part, then the vacuum ultrasonic cleaning machine is directly heated to 48 ℃, vacuum degassing treatment is carried out in the heating process, and after the degassing treatment is finished, the to-be-cleaned part is sequentially subjected to ultrasonic cleaning and pulsating vacuum cleaning; because the lower the pressure, the better the degassing effect, the lower the working pressure setting of the existing vacuum ultrasonic cleaning machine in the degassing stage is generally about-80 kpa, but the working pressure is not actually verified, and in the long-term test process of vacuum ultrasonic energy, the fact that although the working pressure of about-80 kpa is lower and has a better degassing effect is found, the best cleaning effect cannot be achieved in the ultrasonic cleaning stage of the vacuum ultrasonic cleaning machine, so that a piece to be cleaned cannot be thoroughly cleaned.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method overcomes the defects of the prior art, provides the pressure control optimization method of the vacuum ultrasonic cleaning machine, realizes the optimization of the ultrasonic power density, and ensures that the ultrasonic cleaning stage of the vacuum ultrasonic cleaning machine can simultaneously achieve the optimal degassing effect and the cleaning effect.
The invention relates to a pressure control optimization method of a vacuum ultrasonic cleaning machine, which comprises the following steps:
secondly, the ultrasonic sound intensity tester is arranged on the vacuum ultrasonic cleaning machine.
Secondly, the ultrasonic sound intensity tester respectively collects a plurality of groups of internal chamber energy densities under different internal chamber pressures at different working temperatures of the vacuum ultrasonic cleaning machine.
And thirdly, respectively drawing a plurality of groups of inner chamber energy densities at different working temperatures under different inner chamber pressures to form a curve graph of the inner chamber energy density of each working temperature along with the change of the inner chamber pressure.
And fourthly, drawing a threshold value line on the curve graph of the energy density of the inner chamber at each working temperature along with the change of the pressure of the inner chamber.
And fifthly, drawing an energy density change curve chart of the inner chamber under normal pressure at different temperatures.
Sixthly, drawing a pressure and temperature control curve chart in the cleaning stage of the vacuum ultrasonic cleaning machine.
Preferably, in the step I, the ultrasonic sound intensity tester is fixed in the middle of the sealing door at the top of the vacuum ultrasonic cleaning machine through the sealing block I and the sealing block II, so that the distance between the position of the ultrasonic sound intensity tester and the ultrasonic transducer assemblies correspondingly arranged at two sides of the vacuum ultrasonic cleaning machine is equal, and the test result is more accurate.
Preferably, the ultrasonic sound intensity tester passes through the middle through hole after the first sealing block and the second sealing block are buckled, and the first sealing block and the second sealing block are fastened through screws. 595 silica gel can be smeared between the first sealing block and the second sealing block to increase the sealing effect.
Preferably, the working temperature of the graph of the energy density of the inner chamber changing with the pressure of the inner chamber in the third step is a certain temperature point within the range of 30-65 ℃. The activity range of the cleaning enzyme used in the working process of the vacuum ultrasonic cleaner is generally 30-55 ℃, so the temperature of the working medium of the vacuum ultrasonic cleaner is not more than 55 ℃; but in order to better contain this temperature range for the curve drawn in the plot of inner chamber energy density versus inner chamber pressure, the upper temperature limit was set at 65 ℃. The invention respectively draws the curve graphs of the energy density of the inner chamber along with the pressure change of the inner chamber at the working temperatures of 30 ℃, 36 ℃, 38 ℃, 40 ℃, 48 ℃, 55 ℃, 60 ℃ and 65 ℃, and totally collects 49 groups of data at the working temperatures of 30 ℃, 36 ℃, 38 ℃, 40 ℃, 48 ℃, 55 ℃, 60 ℃ and 65 ℃, and respectively draws the curve graphs of the energy density of the inner chamber along with the pressure change of the inner chamber at each working temperature.
Preferably, in the graph of the change of the energy density of the inner chamber of each working temperature along with the pressure of the inner chamber, the abscissa is the pressure of the inner chamber, the range is-90 kpa to 10kpa, and the ordinate is the energy density of the inner chamber, and the unit is W/inch2. Setting of the pressure range of the chamber in the abscissaThe pressure change range of the inner chamber set in the working process of the vacuum ultrasonic cleaning machine is better between 85kpa and 0 kpa.
Preferably, the threshold line in the fourth step is to take 90% of the average value of the energy densities of the plurality of groups of inner chambers when the pressure of the inner chamber is at 0kpa as the threshold value at the working temperature. The threshold line is set to more intuitively see the amplitude of the change of the energy density of the inner chamber along with the pressure of the inner chamber at each working temperature.
Preferably, the graph of the energy density change of the inner chambers under normal pressure at different temperatures in the fifth step is a connection line of the mean values of the energy densities of the plurality of groups of inner chambers at each working temperature and the pressure of the inner chambers at 0 kpa. Because the energy density of the inner chamber at each working temperature is in an attenuation trend within the pressure range of-50 kpa to 0kpa, the initial energy density value of the inner chamber when the pressure of the inner chamber is 0kpa is the maximum value within the pressure range of-50 kpa to 0 kpa; the energy density of the inner chamber varies irregularly after the pressure in the inner chamber is lower than-50 kpa. Therefore, the working temperature suitable for the ultrasonic cleaning stage of the vacuum ultrasonic cleaner can be seen from the inner chamber energy density change curve chart at different temperatures and normal pressures, which is made by taking the average value of the energy densities of the plurality of groups of inner chambers when the pressure of the inner chamber is at 0kpa under each working temperature.
Preferably, the abscissa of the pressure and temperature control curve graph in the cleaning stage of the vacuum ultrasonic cleaner in the step (i) is the working time of the vacuum ultrasonic cleaner, the left ordinate is the temperature range, and the right ordinate is the pressure curve. In the pressure and temperature control curve chart of the vacuum ultrasonic cleaning machine in the cleaning stage, the temperature change curve is drawn by adopting a dotted line, and the pressure change curve is drawn by adopting a solid line, so that the pressure change curve is convenient to distinguish.
Preferably, the vacuum ultrasonic cleaner has two heating links in the working process in the pressure and temperature control curve chart in the cleaning stage of the vacuum ultrasonic cleaner. The first heating-up link is heated to 40 ℃, because the inner chamber temperature of the washing tank is 40 ℃, the energy density of the inner chamber of the washing tank is the maximum under the constant pressure state, the best ultrasonic cleaning effect can be obtained, and the second heating-up link is used for heating the cleaning temperature of the inner chamber of the washing tank from 40 ℃ which is most suitable for ultrasonic cleaning to 48 ℃ which is most suitable for pulsating vacuum cleaning after ultrasonic cleaning.
Preferably, the working temperature of the ultrasonic cleaning stage of the vacuum ultrasonic cleaning machine in the pressure and temperature control curve chart of the cleaning stage of the vacuum ultrasonic cleaning machine is 40 ℃, and the working pressure is-50 kpa to-20 kpa. In the pressure and temperature control curve chart of the cleaning stage of the vacuum ultrasonic cleaning machine, the temperature point corresponding to the minimum inner chamber energy density when the inner chamber pressure is 0kpa is 48 ℃, and the inner chamber energy density is 143.3636W/inch2The maximum energy density of the inner chamber is 60 ℃, and the energy density of the inner chamber is 143.3636W/inch2. The activity range of the cleaning enzyme used in the working process of the vacuum ultrasonic cleaning machine is generally 30-55 ℃, and the energy density of the inner chamber is 138W/inch2Fluctuation up and down, the fluctuation range is less than 4%, when the working temperature is 40 ℃, the energy density of the inner chamber is the maximum, and is 141.5W/inch2. Therefore, when the working temperature is 40 ℃ under normal pressure, the ultrasonic cleaning effect of the vacuum ultrasonic cleaning machine is best, but in the ultrasonic cleaning process, in order to prevent air from being dissolved into water secondarily, ultrasonic treatment is carried out under micro negative pressure, and according to a curve graph of the energy density of the inner chamber along with the pressure change of the inner chamber, the energy density of the inner chamber with the pressure ranging from-50 kpa to-20 kp is not lower than 90% of the maximum energy density of the inner chamber (which means the energy density of the inner chamber with the working temperature of 40 ℃), so that the pressure value of the inner chamber in the ultrasonic cleaning stage of the vacuum ultrasonic cleaning machine can meet the value within the range from-50 kpa to-20 kpa.
Compared with the prior art, the invention has the beneficial effects that:
the invention can visually confirm the inner chamber pressure in the ultrasonic cleaning stage of the vacuum ultrasonic cleaning machine by drawing the inner chamber energy density change-with-inner chamber pressure curve graph at each working temperature, the inner chamber energy density change curve graph at normal pressure at different temperatures and the pressure temperature control curve graph in the cleaning stage of the vacuum ultrasonic cleaning machine, and in the first heating link before the ultrasonic cleaning stage, a vacuum system is started to carry out degassing treatment at the moment before the inner chamber temperature is close to 40 ℃, thereby not only improving the working efficiency of the vacuum ultrasonic cleaning machine, but also ensuring that the vacuum ultrasonic cleaning machine has better degassing effect and stronger ultrasonic cleaning effect. The temperature rise process of the vacuum ultrasonic cleaning machine is divided into two times, the temperature rise step is carried out to 40 ℃ in the first time, the energy density of the inner chamber of the cleaning tank in a normal pressure state is the maximum when the temperature of the inner chamber is 40 ℃, the best ultrasonic cleaning effect can be obtained, and the cleaning temperature of the inner chamber of the cleaning tank is increased from 40 ℃ which is most suitable for ultrasonic cleaning to 48 ℃ which is most suitable for pulsating vacuum cleaning in the second time after the ultrasonic cleaning, so that the ultrasonic energy density is maximized, and the cleaning effect of the vacuum ultrasonic cleaning machine is improved.
Drawings
FIG. 1 is a schematic view of a vacuum ultrasonic cleaner equipped with an ultrasonic sound intensity tester;
FIG. 2 is an enlarged schematic view of the ultrasonic sound intensity tester;
FIG. 3 is a graph of internal chamber energy density as a function of internal chamber pressure at an operating temperature of 30 ℃;
FIG. 4 is a graph of internal chamber energy density as a function of internal chamber pressure at an operating temperature of 36 ℃;
FIG. 5 is a graph of internal chamber energy density as a function of internal chamber pressure at an operating temperature of 38 ℃;
FIG. 6 is a graph of internal chamber energy density as a function of internal chamber pressure at an operating temperature of 40 ℃;
FIG. 7 is a graph of internal chamber energy density as a function of internal chamber pressure at an operating temperature of 48 ℃;
FIG. 8 is a graph of internal chamber energy density as a function of internal chamber pressure at an operating temperature of 55 ℃;
FIG. 9 is a graph of internal chamber energy density as a function of internal chamber pressure at an operating temperature of 60 ℃;
FIG. 10 is a graph of internal chamber energy density as a function of internal chamber pressure at an operating temperature of 65 ℃;
FIG. 11 is a graph of energy density change of the inner chamber at atmospheric pressure at different temperatures;
FIG. 12 is a summary of the curves of FIGS. 3-10;
fig. 13 is a pressure and temperature control graph of the cleaning stage of the vacuum ultrasonic cleaner.
In the figure: 1. an ultrasonic sound intensity tester; 2. a sealing door; 3. an ultrasonic transducer assembly; 4. a cleaning tank; 5. a first sealing block; 6. a second sealing block; 7. and (4) screws.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1-13, the method for optimizing the pressure control of the vacuum ultrasonic cleaning machine according to the present invention includes the following steps:
firstly, an ultrasonic sound intensity tester 1 is arranged on a vacuum ultrasonic cleaning machine.
Secondly, the ultrasonic sound intensity tester 1 respectively collects a plurality of groups of internal chamber energy densities under different internal chamber pressures at different working temperatures of the vacuum ultrasonic cleaning machine.
And thirdly, respectively drawing a plurality of groups of inner chamber energy densities at different working temperatures under different inner chamber pressures to form a curve graph of the inner chamber energy density of each working temperature along with the change of the inner chamber pressure.
And fourthly, drawing a threshold value line on the curve graph of the energy density of the inner chamber at each working temperature along with the change of the pressure of the inner chamber.
And fifthly, drawing an energy density change curve chart of the inner chamber under normal pressure at different temperatures.
Sixthly, drawing a pressure and temperature control curve chart in the cleaning stage of the vacuum ultrasonic cleaning machine.
In this embodiment:
as shown in fig. 1-2, in the step (i), the ultrasonic sound intensity tester 1 is fixed in the middle of the sealing door 2 at the top of the vacuum ultrasonic cleaning machine through the first sealing block 5 and the second sealing block 6, so that the distance between the position of the ultrasonic sound intensity tester 1 and the ultrasonic transducer assemblies 3 correspondingly arranged at two sides of the vacuum ultrasonic cleaning machine is ensured to be equal, and the test result is more accurate. The ultrasonic sound intensity tester 1 penetrates through the middle through hole after the first sealing block 5 and the second sealing block 6 are buckled, and the first sealing block 5 and the second sealing block 6 are fastened through the screw 7. 595 silica gel can be coated between the first sealing block 5 and the second sealing block 6 to increase the sealing effect.
And step three, the working temperature of the graph of the energy density of the inner chamber along with the change of the pressure of the inner chamber is a certain temperature point within the range of 30-65 ℃. The activity range of the cleaning enzyme used in the working process of the vacuum ultrasonic cleaner is generally 30-55 ℃, so the temperature of the working medium of the vacuum ultrasonic cleaner is not more than 55 ℃; but in order to better contain this temperature range for the curve drawn in the plot of inner chamber energy density versus inner chamber pressure, the upper temperature limit was set at 65 ℃. The invention respectively draws the curve graphs of the energy density of the inner chamber along with the pressure change of the inner chamber at the working temperatures of 30 ℃, 36 ℃, 38 ℃, 40 ℃, 48 ℃, 55 ℃, 60 ℃ and 65 ℃, and totally collects 49 groups of data at the working temperatures of 30 ℃, 36 ℃, 38 ℃, 40 ℃, 48 ℃, 55 ℃, 60 ℃ and 65 ℃, and respectively draws the curve graphs of the energy density of the inner chamber along with the pressure change of the inner chamber at each working temperature.
In the step three, the abscissa of a graph of the change of the energy density of the inner chamber of each working temperature along with the pressure of the inner chamber is the pressure of the inner chamber, the range is-90 kpa-10 kpa, the ordinate is the energy density of the inner chamber, and the unit is W/inch2. The pressure range of the inner chamber on the abscissa is set to better include the pressure change range of the inner chamber which is set in the working process of the vacuum ultrasonic cleaning machine from-85 kpa to 0 kpa.
And the threshold line in the step IV is that 90% of the average value of the energy density of the array inner chambers when the pressure of the inner chambers is at 0kpa is taken as the threshold value at the working temperature. The threshold line is set to more intuitively see the amplitude of the change of the energy density of the inner chamber along with the pressure of the inner chamber at each working temperature.
The inner chamber energy density change curve chart under the normal pressure at different temperatures in the fifth step is a connecting line of the mean value of the energy density of the array inner chambers when the inner chamber pressure is at 0kpa at each working temperature. Because the energy density of the inner chamber at each working temperature is in an attenuation trend within the pressure range of-50 kpa to 0kpa, the initial energy density value of the inner chamber when the pressure of the inner chamber is 0kpa is the maximum value within the pressure range of-50 kpa to 0 kpa; the energy density of the inner chamber varies irregularly after the pressure in the inner chamber is lower than-50 kpa. Therefore, the working temperature suitable for the ultrasonic cleaning stage of the vacuum ultrasonic cleaner can be seen from the inner chamber energy density change curve chart at different temperatures and normal pressures, which is made by taking the average value of the energy densities of the plurality of groups of inner chambers when the pressure of the inner chamber is at 0kpa under each working temperature.
As shown in fig. 3, when the working temperature of the vacuum ultrasonic cleaning machine is 30 ℃, the energy density of the inner chamber is gradually reduced along with the gradual reduction of the pressure of the inner chamber, the energy density of the inner chamber is approximately linearly attenuated in the process of reducing the pressure of the inner chamber from 0kpa to-60 kpa, and after the pressure of the inner chamber is reduced to-60 kpa, the energy density of the inner chamber enters a disordered state, so that the fluctuation range is relatively large. Since the inner chamber energy density tends to decay, 90% of the mean value of the initial inner chamber energy density (referring to the inner chamber energy density at an inner chamber pressure of 0 kpa) corresponding to all the curves in fig. 3 corresponds to the threshold line plotted in fig. 3, so that it can be seen that the inner chamber energy density has already decayed by more than 10% when the inner chamber pressure is reduced to-50 kpa.
Referring to fig. 4, when the operating temperature of the vacuum ultrasonic cleaning machine is 36 ℃, the energy density of the inner chamber gradually decreases as the pressure of the inner chamber gradually decreases, and the energy density of the inner chamber linearly decreases from 0kpa to-70 kpa. After the pressure in the inner chamber is reduced to-70 kpa, the energy density of the inner chamber enters a sudden reduction state, and the sudden reduction amplitude exceeds 20%. Since the inner chamber energy density is a decay trend, 90% of the mean value of the initial inner chamber energy density (referring to the inner chamber energy density at an inner chamber pressure of 0 kpa) corresponding to all the curves in fig. 4 corresponds to the threshold line in fig. 4, so that it can be seen that the decay of the energy density exceeds 10% when the inner chamber pressure is reduced to-75 kpa.
Referring to fig. 5, when the working temperature of the vacuum ultrasonic cleaner is 38 ℃, the energy density of the inner chamber gradually decreases as the pressure of the inner chamber gradually decreases, and the energy density of the inner chamber linearly decreases from 0kpa to-50 kpa. After the pressure in the inner chamber is reduced to-70 kpa, the energy density of the inner chamber enters a sudden reduction state, and the sudden reduction amplitude exceeds 20%. Since the inner chamber energy density is a decay trend, 90% of the mean value of the initial inner chamber energy density (referring to the inner chamber energy density at an inner chamber pressure of 0 kpa) corresponding to all the curves in fig. 5 corresponds to the threshold line in fig. 5, so that it can be seen that the decay of the energy density exceeds 10% when the inner chamber pressure is reduced to-75 kpa. Since the temperature point of 38 ℃ is close to the temperature point of 36 ℃, the curve trend is close to that shown in fig. 4 and 5.
As shown in fig. 6, when the working temperature of the vacuum ultrasonic cleaning machine is 40 ℃, the energy density of the inner chamber is gradually reduced along with the gradual reduction of the pressure of the inner chamber, the energy density of the inner chamber is approximately linearly attenuated in the process that the pressure of the inner chamber is reduced from 0kpa to-70 kpa, and after the pressure of the inner chamber is reduced to-70 kpa, the energy density of the inner chamber enters a sudden reduction state, wherein the sudden reduction amplitude exceeds 40%. Since the inner chamber energy density is a decay trend, 90% of the mean value of the initial inner chamber energy density (referring to the inner chamber energy density at the inner chamber pressure of 0 kpa) corresponding to all the curves in fig. 6 corresponds to the threshold line in fig. 6, so that it can be seen that the decay of the energy density exceeds 10% when the inner chamber pressure is reduced to-60 kpa.
Referring to fig. 7, when the working temperature of the vacuum ultrasonic cleaner is 48 ℃, the energy density of the inner chamber gradually decreases as the pressure of the inner chamber gradually decreases, and the energy density of the inner chamber linearly decreases from 0kpa to-50 kpa. After the chamber pressure dropped to-60 kpa, the chamber energy density entered a turbulent regime. Since the inner chamber energy density is a decay trend, 90% of the mean value of the initial inner chamber energy density (referring to the inner chamber energy density at an inner chamber pressure of 0 kpa) corresponding to all the curves in fig. 7 corresponds to the threshold line in fig. 7, so that it can be seen that the inner chamber energy density has decayed by more than 10% when the inner chamber pressure is reduced to-60 kpa.
Referring to fig. 8, when the working temperature of the vacuum ultrasonic cleaner is 55 ℃, the inner chamber pressure is decreased from 0kpa to-60 kpa, the inner chamber energy density is gradually decreased and is approximately linearly attenuated as the inner chamber pressure is gradually decreased, and after the inner chamber pressure is decreased to-60 kpa, the inner chamber energy density enters a climbing state and reaches a peak value at about-80 kpa. Taking the mean of 90% of the initial chamber energy density (referring to the chamber energy density at a chamber pressure of 0 kpa) for all curves in fig. 8, the threshold line of fig. 8 is plotted, so that it can be seen that the decay of the energy density is over 10% when the chamber pressure is reduced to-60 kpa, and the chamber energy density is about 1.04 times the initial chamber energy density when the chamber pressure is reduced to-80 kpa.
Referring to fig. 9, when the operating temperature of the vacuum ultrasonic cleaning machine is 60 ℃, the energy density of the inner chamber gradually decreases with the gradual decrease of the pressure of the inner chamber in the process of decreasing the pressure of the inner chamber from 0kpa to-60 kpa, and the energy density of the inner chamber is approximately linearly attenuated, and after the pressure of the inner chamber decreases to-70 kpa, the energy density of the inner chamber enters a fluctuating climbing state, and the pressure of the inner chamber reaches a peak value at about-80 kpa. Taking the mean of 90% of the initial chamber energy density (referring to the chamber energy density at a chamber pressure of 0 kpa) for all curves in fig. 9, the threshold line of fig. 9 is plotted, so that it can be seen that the chamber energy density decays by more than 10% when the chamber pressure is reduced to-60 kpa, and the chamber energy density is about 1.07 times the initial energy density when the chamber pressure is reduced to-80 kpa.
Referring to fig. 10, when the working temperature of the vacuum ultrasonic cleaner is 65 ℃, the pressure of the inner chamber is reduced from 0kpa to-55 kpa, the energy density of the inner chamber is gradually reduced along with the gradual reduction of the pressure of the inner chamber, the energy density of the inner chamber is approximately linearly attenuated, and after the pressure of the inner chamber is reduced to-70 kpa, the energy density of the inner chamber enters a high-amplitude fluctuation state, the fluctuation center value is 140W/inch2. Taking the mean of 90% of the initial chamber energy density (referring to the chamber energy density at a chamber pressure of 0 kpa) for all curves in fig. 10, the threshold line of fig. 10 is plotted, and it can be estimated that the chamber energy density decays by more than 10% when the chamber pressure drops to-30 kpa.
As shown in FIG. 11, which is a graph showing the variation of the energy density of the inner chamber at atmospheric pressure under different temperatures, the temperature point corresponding to the minimum energy density of the inner chamber at a pressure of 0kpa was 48 ℃, and the energy density of the inner chamber was 143.3636W/inch2The maximum energy density of the inner chamber is 60 ℃, and the energy density of the inner chamber is 143.3636W/inch2. The activity range of the cleaning enzyme used in the working process of the vacuum ultrasonic cleaning machine is generally 30-55 ℃, and the energy density of the inner chamber is 138W/inch2The fluctuation range is less than 4 percent, so the energy density of the inner chamber is the maximum at the working temperature of 40 ℃ and is 141.5W/inch2。
The data summarized tables from fig. 3-11 are as follows:
as shown in FIG. 12, the energy density of the chamber is very significantly linearly attenuated in the range of-50 kPa to 0kPa, regardless of the temperature change of the chamber; when the pressure in the inner chamber is lower than-50 kpa, the pressure in the inner chamber generates irregular change direction of the energy density in the inner chamber.
And sixthly, the abscissa of the pressure-temperature control curve graph in the cleaning stage of the vacuum ultrasonic cleaning machine is the working time of the vacuum ultrasonic cleaning machine, the left ordinate is the temperature range, and the right ordinate is the pressure curve. In the pressure and temperature control curve chart of the vacuum ultrasonic cleaning machine in the cleaning stage, the temperature change curve is drawn by adopting a dotted line, and the pressure change curve is drawn by adopting a solid line, so that the pressure change curve is convenient to distinguish.
The working process of the vacuum ultrasonic cleaning machine in the pressure and temperature control curve chart of the cleaning stage of the vacuum ultrasonic cleaning machine has two temperature rise links. The first heating-up link is to heat up to 40 ℃, because the inner chamber temperature of the washing tank 4 is 40 ℃ and the energy density of the inner chamber of the washing tank 4 is the maximum under the constant pressure state, the best ultrasonic cleaning effect can be obtained, and the second heating-up link is to heat up the cleaning temperature of the inner chamber of the washing tank 4 from 40 ℃ which is most suitable for ultrasonic cleaning to 48 ℃ which is most suitable for pulsating vacuum cleaning after ultrasonic cleaning.
In the pressure and temperature control curve chart of the cleaning stage of the vacuum ultrasonic cleaning machine, the working temperature of the ultrasonic cleaning stage of the vacuum ultrasonic cleaning machine is 40 ℃, and the working pressure is-50 kpa to-20 kpa. In the pressure and temperature control curve chart of the cleaning stage of the vacuum ultrasonic cleaning machine, the temperature point corresponding to the minimum inner chamber energy density when the inner chamber pressure is 0kpa is 48 ℃, and the inner chamber energy density is 143.3636W/inch2The maximum energy density of the inner chamber is 60 ℃, and the energy density of the inner chamber is 143.3636W/inch2. The activity range of the cleaning enzyme used in the working process of the vacuum ultrasonic cleaning machine is generally 30-55 ℃, and the energy density of the inner chamber is 138W/inch2Fluctuation up and down, the fluctuation range is less than 4%, when the working temperature is 40 ℃, the energy density of the inner chamber is the maximum, and is 141.5W/inch2. Therefore, the vacuum ultrasonic cleaning machine has the best ultrasonic cleaning effect at the working temperature of 40 ℃ under normal pressure, but the ultrasonic cleaning effect is realizedIn order to prevent air from being dissolved into water for the second time in the washing process, ultrasound is carried out under micro negative pressure, and according to a curve graph of the energy density of the inner chamber along with the pressure change of the inner chamber, the energy density of the inner chamber with the pressure of-50 kpa to-20 kpa is not lower than 90% of the maximum energy density of the inner chamber (the energy density of the inner chamber at the working temperature of 40 ℃), so that the pressure value of the inner chamber in the ultrasonic washing stage of the vacuum ultrasonic washing machine can meet the value within the range of-50 kpa to-20 kpa.
As shown in fig. 13, when the initial time of the working process of the vacuum ultrasonic cleaning machine is 0, the vacuum ultrasonic cleaning machine enters a temperature raising step after water is fed, that is, the time period of 0 to t1 is the first temperature raising step in the cleaning tank 4, and when the temperature is raised to 40 ℃, as can be seen from fig. 11, the energy density of the inner chamber is the maximum when the temperature of the inner chamber is 40 ℃ and the pressure is normal, and the best ultrasonic cleaning effect can be obtained at this time; in order to ensure a good ultrasonic cleaning effect, cleaning water in the inner chamber of the cleaning tank 4 needs to be degassed before ultrasonic cleaning is started, namely in a first heating link of the cleaning tank 4, a vacuum system is started at a time t0 when the temperature of the inner chamber is close to 40 ℃, air dissolved in the cleaning water can be rapidly removed in a vacuum state, and the good ultrasonic cleaning effect is ensured, wherein a degassing process maintaining time period is t0-t1, and the specific length of the degassing process maintaining time period is determined according to the size of the cleaning tank 4, the vacuumizing capacity of the vacuum system, the heating speed and the like.
t1 to t2 are ultrasonic cleaning processes, and as can be seen from fig. 11, the energy density of the inner chamber is the largest at the normal pressure state when the temperature of the inner chamber is 40 ℃, and ultrasonic cleaning is performed at a slight negative pressure P1 in order to prevent air from being secondarily dissolved into water during the ultrasonic cleaning process, and as can be seen from the summary curve of fig. 12, the attenuation of the energy density of the inner chamber is small in the range of-20 kpa to 0kpa, and therefore P1 can be defined as-20 kpa. However, as can be seen from the graphs of the energy density of each inner chamber in fig. 3-10, the energy density of the inner chamber in the range of-50 kpa to-20 kpa is not lower than 90% of the maximum energy density of the inner chamber (i.e. the energy density of the inner chamber at the working temperature of 40 ℃), so that the pressure value of the inner chamber in the ultrasonic cleaning stage of the vacuum ultrasonic cleaning machine can satisfy the range of-50 kpa to-20 kpa.
t 2-t 3 is a secondary heating-up link after the vacuum ultrasonic cleaner carries out ultrasonic cleaning, and the cleaning temperature in the tank is increased from 40 ℃ which is most suitable for ultrasonic cleaning to 48 ℃ which is most suitable for pulsating vacuum cleaning. t 3-t 4 are pulsating vacuum cleaning links, cleaning of the outer surface of the piece to be cleaned is achieved after repeated pulsating cleaning, and meanwhile, the pulsating vacuum cleaning links can wash dirt stripped in the ultrasonic cleaning links out of the inner part of the tube cavity of the piece to be cleaned. t4 is followed by the drainage segment after the vacuum ultrasonic cleaner cleaning stage is completed.
Claims (10)
1. A pressure control optimization method for a vacuum ultrasonic cleaning machine is characterized by comprising the following steps: the method comprises the following steps:
firstly, an ultrasonic sound intensity tester (1) is arranged on a vacuum ultrasonic cleaning machine.
Secondly, the ultrasonic sound intensity tester (1) respectively collects a plurality of groups of internal chamber energy densities under different internal chamber pressures at different working temperatures of the vacuum ultrasonic cleaning machine.
And thirdly, respectively drawing a plurality of groups of inner chamber energy densities at different working temperatures under different inner chamber pressures to form a curve graph of the inner chamber energy density of each working temperature along with the change of the inner chamber pressure.
And fourthly, drawing a threshold value line on the curve graph of the energy density of the inner chamber at each working temperature along with the change of the pressure of the inner chamber.
And fifthly, drawing an energy density change curve chart of the inner chamber under normal pressure at different temperatures.
Sixthly, drawing a pressure and temperature control curve chart in the cleaning stage of the vacuum ultrasonic cleaning machine.
2. The vacuum ultrasonic cleaner pressure control optimization method according to claim 1, characterized in that: in the first step, the ultrasonic sound intensity tester (1) is fixed in the middle of the sealing door (2) at the top of the vacuum ultrasonic cleaning machine through the sealing block I (5) and the sealing block II (6).
3. The vacuum ultrasonic cleaner pressure control optimization method according to claim 2, characterized in that: the ultrasonic sound intensity tester (1) penetrates through the middle through hole after the first sealing block (5) and the second sealing block (6) are buckled, and the first sealing block (5) and the second sealing block (6) are fastened through the screw (7).
4. The vacuum ultrasonic cleaner pressure control optimization method according to claim 1, characterized in that: and in the third step, the working temperature of the curve graph of the energy density of the inner chamber along with the change of the pressure of the inner chamber is a certain temperature point within the range of 30-65 ℃.
5. The vacuum ultrasonic cleaner pressure control optimization method according to claim 1, characterized in that: in the step three, the abscissa of a graph of the change of the energy density of the inner chamber of each working temperature along with the pressure of the inner chamber is the pressure of the inner chamber, the range is-90 kpa-10 kpa, the ordinate is the energy density of the inner chamber, and the unit is W/inch2。
6. The vacuum ultrasonic cleaner pressure control optimization method according to claim 1, characterized in that: and the threshold line in the step IV is that 90% of the average value of the energy density of the array inner chambers when the pressure of the inner chambers is at 0kpa is taken as the threshold value at the working temperature.
7. The vacuum ultrasonic cleaner pressure control optimization method according to claim 1, characterized in that: in the fifth step, the inner chamber energy density change curve graphs under the normal pressure at different temperatures are connecting lines of the mean values of the energy densities of the array inner chambers at each working temperature and when the inner chamber pressure is 0 kpa.
8. The vacuum ultrasonic cleaner pressure control optimization method according to claim 1, characterized in that: the abscissa of the pressure and temperature control curve graph in the cleaning stage of the medium vacuum ultrasonic cleaning machine is the working time of the vacuum ultrasonic cleaning machine, the left ordinate is the temperature range, and the right ordinate is the pressure curve.
9. The vacuum ultrasonic cleaner pressure control optimization method according to claim 1 or 8, characterized in that: the working process of the vacuum ultrasonic cleaning machine in the pressure and temperature control curve chart of the cleaning stage of the vacuum ultrasonic cleaning machine has two temperature rise links.
10. The vacuum ultrasonic cleaner pressure control optimization method according to claim 1 or 8, characterized in that: in the pressure and temperature control curve chart of the cleaning stage of the vacuum ultrasonic cleaning machine, the working temperature of the ultrasonic cleaning stage of the vacuum ultrasonic cleaning machine is 40 ℃, and the working pressure is-50 kpa to-20 kpa.
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0726099A2 (en) * | 1995-01-26 | 1996-08-14 | Texas Instruments Incorporated | Method of removing surface contamination |
| CN1276271A (en) * | 1999-05-25 | 2000-12-13 | 因芬尼昂技术北美公司 | Temp.-controlled degasification of deionized water in extremely ultrasonic cleaned semiconductor chip |
| JP2003080187A (en) * | 2001-09-11 | 2003-03-18 | Tosei Denki Kk | Part washing and drying method and part washing and drying apparatus |
| JP2003093983A (en) * | 2001-09-27 | 2003-04-02 | Sharp Corp | Ultrasonic cleaning method and ultrasonic cleaning apparatus |
| JP2003145071A (en) * | 2001-11-06 | 2003-05-20 | Aqua Kagaku Kk | Cleaning apparatus and cleaning method |
| JP2004049975A (en) * | 2002-07-17 | 2004-02-19 | Star Cluster:Kk | Washing method and washing device in ultrasonic cleaning apparatus |
| CN201058333Y (en) * | 2007-07-03 | 2008-05-14 | 山东新华医疗器械股份有限公司 | Medical cleaning sterilser |
| JP2010137134A (en) * | 2008-12-10 | 2010-06-24 | Rasuko:Kk | Cleaning method and cleaning apparatus under low environmental load |
| CN103697998A (en) * | 2013-12-12 | 2014-04-02 | 中国计量学院 | Multi-medium and temperature/pressure-adjustable ultrasonic propagation characteristic measuring device |
| CN203816978U (en) * | 2014-03-22 | 2014-09-10 | 深圳市美雅洁技术股份有限公司 | Vacuum ultrasonic cleaning device for cleaning medical equipment |
| DE202016005599U1 (en) * | 2016-09-13 | 2017-12-15 | Leybold Gmbh | Metallentgasungs device |
| JP2020006287A (en) * | 2018-07-03 | 2020-01-16 | オリンパス株式会社 | Cleaning device and cleaning method |
| CN111992535A (en) * | 2020-08-31 | 2020-11-27 | 山东新华医疗器械股份有限公司 | Cleaning sterilizer with multiple cleaning modes |
-
2021
- 2021-09-10 CN CN202111063818.4A patent/CN113731937B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0726099A2 (en) * | 1995-01-26 | 1996-08-14 | Texas Instruments Incorporated | Method of removing surface contamination |
| CN1276271A (en) * | 1999-05-25 | 2000-12-13 | 因芬尼昂技术北美公司 | Temp.-controlled degasification of deionized water in extremely ultrasonic cleaned semiconductor chip |
| US6167891B1 (en) * | 1999-05-25 | 2001-01-02 | Infineon Technologies North America Corp. | Temperature controlled degassification of deionized water for megasonic cleaning of semiconductor wafers |
| JP2003080187A (en) * | 2001-09-11 | 2003-03-18 | Tosei Denki Kk | Part washing and drying method and part washing and drying apparatus |
| JP2003093983A (en) * | 2001-09-27 | 2003-04-02 | Sharp Corp | Ultrasonic cleaning method and ultrasonic cleaning apparatus |
| JP2003145071A (en) * | 2001-11-06 | 2003-05-20 | Aqua Kagaku Kk | Cleaning apparatus and cleaning method |
| JP2004049975A (en) * | 2002-07-17 | 2004-02-19 | Star Cluster:Kk | Washing method and washing device in ultrasonic cleaning apparatus |
| CN201058333Y (en) * | 2007-07-03 | 2008-05-14 | 山东新华医疗器械股份有限公司 | Medical cleaning sterilser |
| JP2010137134A (en) * | 2008-12-10 | 2010-06-24 | Rasuko:Kk | Cleaning method and cleaning apparatus under low environmental load |
| CN103697998A (en) * | 2013-12-12 | 2014-04-02 | 中国计量学院 | Multi-medium and temperature/pressure-adjustable ultrasonic propagation characteristic measuring device |
| CN203816978U (en) * | 2014-03-22 | 2014-09-10 | 深圳市美雅洁技术股份有限公司 | Vacuum ultrasonic cleaning device for cleaning medical equipment |
| DE202016005599U1 (en) * | 2016-09-13 | 2017-12-15 | Leybold Gmbh | Metallentgasungs device |
| JP2020006287A (en) * | 2018-07-03 | 2020-01-16 | オリンパス株式会社 | Cleaning device and cleaning method |
| CN111992535A (en) * | 2020-08-31 | 2020-11-27 | 山东新华医疗器械股份有限公司 | Cleaning sterilizer with multiple cleaning modes |
Non-Patent Citations (3)
| Title |
|---|
| 吴强等: "超声清洗过程环境压力对声空化效应的影响", 《应用声学》 * |
| 杨日福等: "亚临界水中超声激励空化泡动力学分析", 《应用声学》 * |
| 高永慧等: "超声波清洗液温度变化规律的研究", 《承德石油高等专科学校学报》 * |
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