Through browsing this passage, the technicist, working in these companies and testing organizations of the refrigerator, will recognize the situation of the fresh standard establishing, in light of the background information, meaning, process, main point and recent news of the international fresh standard introduced in this passage.

The object of this study is an power saving refrigerator of three regions that can control the temperature independently and accurately, the refrigerator has three separate rooms, the upper part is the fridge, the middle is the interchangeable temperature chamber, and the lower is the freezer. The control system is a multivariable output fuzzy control, it controls the accurate temperature control in separate rooms, cooling system in separate rooms and frequency conversion technology, so as to achieve the functions of power saving, food preservation, low noise and so on.

Photosynthesis, means fruits and vegetables carry through a series of physical and chemical reactions, the process of nutrients. Under the effective illumination, attenuation rate can be reduced. By controlling the ratio of red and blue, the experiment research the weight loss rate and chlorophyll index of vegetables, finally confirm that the best ratio of red and blue is 1:5.

This article analyses the changes of tea polyphenols and vitamin C content and the contrast test in different ways.

Through the analysis of Chinese scholars on the research achievements of super-wide temperature refrigerator, using the aluminum foil heater project to explore the feasibility of heating in variable temperature compartment, through CFD simulation and prototype production, proving that using the mentioned method can make variable temperature compartment have the conditions to adjust the temperature between -18℃ to 45℃, the air temperature uniformity is well, the maximum temperature difference controlled in 5 ℃ or so, the surface of the aluminum foil heater heating temperature is relatively low, can well protect the inner of the refrigerator.

As the basics and familiar commodity, de-frost refrigerator take a large share in the market. But as the no-frost refrigerator get more popular, the de-frost refrigerators' defect of frosting becoming a high influence for customers to make choice. This paper mentioned uniformity refrigerator is improved the way of freezing chamber evaporator assembly, through the way to add tube around the liner, to make the freezing chamber work uniform, decrease the thickness of frosting and eradicate the blind corner. Then achieve the goal of fast defrost.

In this paper, The principle of anti-odor module and effect of application in the Frost-free Refrigerator were studied. The results showed that anti-odor module was installed in the air inlet and air outlet of refrigerator could effectively avoid the odor diffusion. And the anti-odor rate was more than 99%.

In this paper, the application of artificial intelligence in intelligent refrigerator has been studied and analyzed. And further summarized the image recognition, voice interaction, face recognition, RFID and other technologies in the refrigerator on the application of the status quo.

Conventional refrigerators provide a good preservation environment with low temperature for fruits and vegetables. It can delay the ripeness of postharvest fruits and vegetables and provide a huge convenience to customers. However, many tropical and subtropical fruits and vegetables are sensitive to the refrigerating temperature, and they will show chilling injury after storage in refrigerators for quite a while, such as skin watery and/or browning spot, pulp browning, and even rot, which significantly reduces the edible quality. This paper reviewed the research progress of the symptoms of chilling injury, occurrence mechanisms and controlling methods. By combining the studies and control methods of chilling injury of postharvest fruits and vegetables and the refrigerator industry, we expect to develop a new preservation refrigerator and provide a good solution for customers to obtain the high quality of fruits and vegetables.

The working principle, advantages and disadvantages of sine wave FOC driving and traditional square wave driving are analyzed and compared. A new Cool-Tech^TM inverter technology is proposed from two aspects of software algorithm and hardware loss. Through the experimental verification, Inverter board based on Cool-Tech^TM frequency conversion technology can improve the COP value and speed stability of inverter compressor, reduce the power consumption of frost-free refrigerator without changing any other components.

A method of cloud recipes for microwave oven is proposed. The method can make the menu of the connected microwave oven updated at any time, thereby avoiding the disadvantages of the fixed menu of the microwave oven in the past. The increase of any new recipes or the optimization of recipes have been achieved by setting up the parameters of the microwave oven.

As the ozone layer depletion gets worse and global warming gets more serious, environmental-friendly air conditioners have become a great concern to many people. Refrigerant (cooling medium) replacement is among the list of priorities. This article makes a comparison between refrigerant DR55 and refrigerant R32, R410A from the aspects of refrigerant constituents, environmental safety, and their theoretical and practical performance.

This paper presents a new methold for wire bonding process of semiconductor industry, to eliminate the resonant problem between lead frame and metal base in wire bonding process, and to improve the appearance consistency of the power devices wire bonding.

In this paper, influencing factors and equivalence of the dimension X for different standards were analysed by comparing and using examples in order to strengthen comprehension of the dimension X of creepage distance and electrical clearance measurement for PTP and testing laboratory in electrical field. The results indicated that it was possible to cite standards between different groups as references according to equivalence in the future PT programs. Furthermore, different test items were carried out for lamps, information, electrical and other different product testing laboratories. Testing laboratories should pay attention to the working conditions specified in the instruction manual for accurately determine dimension X when participating in such programs.

In this article, the noise of three kinds water purifiers sold in local markets were choose to compare noise level. Furthermore, the mainstream water purifier of A company with new and used filter elements were also being studied. The results show that the noise of water purifier is composed of magnet valve with air in the system and the noise of stabilized pressure pump body. To solve this problem, programs optimization, structure noise-insulation and a new schema of noise intelligent detecting are presented.

By analyzing the principle of ice maker ice making, deice; this paper expounds the hot gas defrosting effect on ice maker compressor reliability. And by GPY12RA compressor matching ice maker test, it is concluded that the ice maker hot gas defrosting effect on reliability of the compressor. Although ice maker use hot gas defrosting is easy to cause the compressor liquid impact, but as long as the control, the ice maker compressor can largely avoid liquid impact, can guarantee the use of hot gas defrosting ice maker has a reliable performance. In this paper to the ice maker manufacturer and compressor manufacturers have a certain guiding significance.

At present, a variety of touch outer parts in the appliance industry are widely used, such as remote controller, phone charger, switch and button. However, it’s easily to occur dislocation, segment difference and burrs, which can be the fatal quality defects in terms of products quality. Taking the example of electric kettle button, this paper will study the reasons why dislocation and segment difference and burrs occur and also put forward the corresponding mold design solution. It’s not only meet customers’ requirements towards appearance and update product grade, but also make a breakthrough for such pain point of the mold. This paper will state from the aspects of products burrs defect analysis and mold structure design, so readers can have an idea about fine positioning technology of the internal mold.

Aluminum alloy profile with light weight ,high strength and good surface treatment performance has been widely used in the field of various industries. This article introduces the performance characteristics of aluminum extrusion and its surface treatment technology, focusing on the air conditioner with aluminum structure design, detailed way of processing technology and its anodic oxidation treatment, finally introduces the application effect of aluminum on the air conditioner and selection criteria.

Through the thermodynamic analysis of R290 refrigerant, conclude that the pressure drop should be decreased in the design of R290 outdoor heat exchanger. Through theoretical analysis, obtained in the same process, the φ5 heat exchanger pressure drop is the φ7 heat exchanger 4 times, should be increased the numbers of flow path to reduce the pressure drop. EVAP-COND process simulation software is used to verify and optimize the numbers of flow path. Finally, the experimental results show that the ratio of heat capacity to cold capacity is achieved 1.1 times in the 2HP cooling and heating system within the limited range of R290 refrigerant charge.

For a long time, it is difficult for manufacturers to obtain approximate values of energy efficiency of electric fan during the design and development stage. An engineering calculation method is presented in this paper. By establishing the correlation curve of fan blade, and by comparing with the motor characteristic curve, this method can find out the normal work point of the fan, so the approximate value of energy efficiency can be calculated.

In order to improve competitiveness, in recent years, the quality of household electrical appliances continue to improve, while the appearance of the injection molded parts also continue to improve. And even some of the appearance of plastic injection products into the gating fracture effect also has strict requirements, this paper on the research and application of hot cutting in mould technology to improve the separation of gating in home appliance injection products.

In order to study the influence regulation of the compressor performance with different suction pipe design, this paper has carried out fluid structure interaction(FSI) simulation and experimental research with different suction pipe design. The influence regulation of the compressor performance was obtained from experimental test with different work condition、frequency and the minimum area of suction pipe. The suction power loss was gained with the fluid structure interaction(FSI) simulation with different work condition、frequency and the minimum area of suction pipe. The regression equation of the suction power loss was obtained with FSI simulation and ANOVA with Mini TAB software.

In this paper, introduces the design and improvement of product wall thickness design, to make readers have a certain understanding of the formation and improvement of the product appearance.

In the field of household appliances, the development of personalized customization has been paid more and more attention. According to the trend, home appliance enterprises have made many useful attempts in customized services, but from the perspective of products, they mainly focus on the customization of appearance and individual functions, and the real customization is not yet fully realized. This article will focus on the development status of customized home appliances and analyze the difficulties and main problems in the development of customized appliances, and explore the quality evaluation criteria of customized household appliances.