By Himfr Paul
With the development of science and technology, more and more new technology is applied to the design and manufacture of washing machines. Is now more popular frequency technology and direct drive technology.
In today’s rapid economic development, energy shortage as a constraint to economic development of countries has been a major problem, due to excessive energy consumption leading to environmental deterioration in the world as a serious problem faced.
In view of this situation, China’s relevant departments to guide consumers to buy higher levels of energy efficiency appliances, and promote the development of energy-saving products in 2005 and gradually implemented a variety of household appliances product energy efficiency labeling system requiring the sale in China Products must be pasted energy-efficiency labeling. Very high market share as a family home appliances, household electric washing machine products in March 1, 2007 implementation of energy efficiency labeling system.
For energy efficiency labeling system, various washing machine manufacturers have done their best to introduce a number of innovative design, is committed to developing a more energy efficient products for the market to gain an advantage.
Motor is a key component of energy.
Machine energy, the most direct and effective way is to use efficient components, especially the key components. For the washing machine products, motor undoubtedly the most crucial parts. Choose a high efficiency motor efficiency of the machine will play a crucial role. The face of rising international metal prices, some lawless parts manufacturers to save cost, use low-quality enameled wire, silicon steel and other raw materials, resulting in reduced motor efficiency.
This is a waste of national resources, the majority of washing machine manufacturers should unite to resist this approach, a positive response to the call of the national energy-saving environmental protection, use of some efficient motor. In addition, the selection and efficient drainage pump or drain valve and other components will also increase the efficiency of the whole machine to play a role.
Heating pipes should be matched with the machine.
Mentioned earlier, can use high-efficiency washing machine motor to improve energy efficiency, it is not efficient motor selection will definitely be saving it? Obviously not, also need reasonable machine motor and matching. Because the motor is a very special product, the output power can change with the load changes in a certain range. In the change process, its efficiency is not a fixed value, would at some point reaches its maximum. In machine design, should be the washing machine is rated state design the most efficient point in the vicinity.
For the drum type washing machine, heating pipe is the largest component of energy consumption, under normal circumstances, the energy consumption for heating wash water washing the whole process of energy consumption accounted for 70% to 85%. The heat pipe is essentially purely resistive component, a difference of less efficient, power factor (the ratio of useful work to total power) are close to 100%. So for the heating pipe, saving the most critical issue is how to make a better match with the machine.
[youtube]http://www.youtube.com/watch?v=TedPwl1oBTI[/youtube]
On the same drum type washing machine, if the use of smaller heating power tubes, for a long time heating the washing water can be heated to the required temperature; use a larger heating power control, short heating the washing water can be heated to the required temperature, power consumption should be the same, so which way is better? Obviously be the latter. Longer heating time for the former, it is possible just to heat the water to the desired temperature, washing process is over, the hot water will be discharged directly, the white wasted.
The short period of time the water heated to the required temperature can make clothes a long time at high temperature washing water washing, more favorable to remove the stains. Because the temperature can increase the solubility of detergent, so that faster movement of molecules dirt, dirt molecules and weaken the fabric of the combination strength. In this way, dirt in the effect of surfactant can be more easily removed from the fabric.
But not the blind pursuit of high-power heating pipe, one power too easily lead to security risks, and is currently the home also has a limited distribution; second, because there are a number of washing powder contains a variety of enzymes, the highest enzyme activities not the same temperature, if temperature rises too quickly, you can not give full play to the activity of certain enzymes may lead to the effect of removing some stains worse. Therefore, the choice should be scientific and reasonable heat pipe, to achieve the best match with the washing machine effect.
Select the appropriate amount of water must be.
Heating energy consumption of washing water on the impact of the most important factor is the wash water, wash water required for heating the heat , where m refers to the washing water quality. Therefore, the rational design of washing water, to avoid excessive heating caused by the energy of the waste water directly reduce the washing machine can play the role of consumption.
In addition, the drum type washing machines, test volume of a detergent, added 1.0% of rated washing capacity, so the concentration of detergent, washing water entirely by the decision. Less washing water will increase the concentration of detergent, washing machines will also be improved cleaning ability. However, the wash water is also determined by washing the dirt under the concentration, the concentration of too much dirt will cause its suspension in the wash solution in reduced ability to larger trend of re-sedimentation. If the re-deposition was greater than the capacity of decontamination will be washing effect may lead to deterioration. Therefore, selection of water must be appropriate, both energy-saving, but also to achieve good cleaning results.
Rational use of soaking time.
Currently, many enterprises in the washing process with a certain soaking time, so that the active chemical components in detergents and stain clothes in full effect, to achieve the purpose of improving cleaning effect, while also reducing the time pulsator operation , play the effect of energy conservation. According to tests show that the simple immersion of the clean than the very limited improvement. Many companies now put forward the concept immersion movement is through rational design pulsator rotation and soaking time, the combination of washing and soaking together, the improvement of the wash will play better than the results.
Appropriate use spray rinse mode.
For the wave-wheel washing machines, GB 12021.4-2004 standard indicators developed more severe classification, to achieve energy efficiency rating a very difficult. Now a number of washing machine manufacturers in pursuit of this target, at “desperate” way of using spray rinsing. The so-called spray rinse, that is, after washing, rinse the first time is not filled with water by rinsing the way; but when the side of the water spray rinse, but also intermittently for dehydration, drainage. This can reduce the washing machine rinse water, rinsing process also reduces motor operating time to achieve the conservation of energy.
But it would have a greater risk that the standard GB 12021.4-2004 provides not only wash ratio, power consumption, water use efficiency of the label of these three indicators should be explicit, but also provides for washing and rinsing performance of the dehydration performance must meet GB / T 4288-2003 standard. If one failed, even if the measured energy efficiency rating for one has no meaning.
Way of using spray rinsing rinsing performance of the project is likely to cause failure, but the performance is bound to have some effect on the wash. Therefore, this method must be used with caution, to go through the full test verification can be used rear no problem.
Frequency and direct-drive technology is conducive to energy conservation.
Using the frequency characteristics of the motor is the largest energy-saving washing machines. In general, washing is the single-phase motor used capacitor motor, by its principle, structure and manufacturing process constraints, the efficiency of this motor is only about 40% efficient, but also 50%; the conversion efficiency of the motor more than 80% will naturally play a saving effect. In addition, there are washing machines wash than the high frequency, low noise, little vibration, the advantages, but also more in line with current green design principles.
Direct-drive technology is used to speed direct-drive DC brushless motor for washing or cleaning tube dehydration technology. The traditional washing machine motor and washing tube through the skin between the drive to bring this center will inevitably arise due to the efficiency of mechanical wear loss, while the direct-drive technology is eliminating the intermediate links, coupled with the efficiency of brushless DC motor itself significantly higher than on ordinary single-phase induction motor, it greatly improves the efficiency of the whole machine.
Manufacturing methods can also improve efficiency.
These are now commonly used in washing machine design process, several energy-saving methods, and some in the manufacturing process issues that need attention, can also increase the overall efficiency of washing machines, large manufacturing enterprises to draw attention.
Installed between the pulley to improve accuracy, reduce transmission losses. During installation, the wave-wheel motors and washing washing machine should ensure that the pulley cylinder in the same horizontal plane; for drum type washing machine, you should ensure that both in the same vertical plane, so you can minimize the friction generated by mechanical damage, thus improving the mechanical efficiency is equivalent.
Improve the clutch (reducer) between the precision gears. By increasing the precision gears, gear reduction between the amount of engagement of mine, also can reduce the adverse result of the mechanical gear with the losses and improve mechanical efficiency.
The above points are now commonly used in the washing machine industry, a number of energy-saving design, manufacturing methods, hoping that with the personnel involved in the cause of the increasing and the development of science and technology, we also invent more and better ways of saving our country emission reduction, environmental protection and make a greater contribution.
Related Links.
International environmental standard washing machine energy, EU market, all the washing machines are sold put a green label (Eco-label), on the washing machine’s energy consumption, dehydration effect, washing effect by A, B, C, D, E, F, G grade (below the table shown), and water consumption was strictly the provisions; Australia is on the washing machine by star category (Star rating system), the best for the 6 stars, 1 star the worst. Please note, however, washing machines, the key is to wash clean clothes, all the energy, water and other indicators on the premise that washing effect (Washing performance), the European Union provides the latest washing machines to reach 1.00 degree wash, wash washing machine in Australia provided of at least 0.80.
In Europe, these indicators of tests conducted in the specialized agencies, all tests with reference to the IEC60456 standard, the standard GB4288 with China is different. Such as cleaning than test, their requirements for low foam detergent powder washing powder (including SIK Foam Inhibitor), contaminated clothing is not the same configuration more different contaminants, pollutants required to have blood and chocolate, butter, etc. consistent with Western habits, and GB4288 is consistent with the Chinese people’s living habits.
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