In this paper, the four factors of washing acceleration, washing speed, washing ON and OFF time were compared and analyzed, and the factors affecting the washing performance and wear rate of the washing machine were found. The existing program is optimized, the new scheme can improve the washing performance and reduce the wear rate, provide advices for the washing action design of the later products.

With the development of big data and intelligence, intelligent household appliances for clothing care are gradually accepted by more and more consumers, which make the process of clothing care simpler for consumers. They can record and save a large number of clothing care data in the use procedure. However, many enterprises of clothing care household appliances are not aware of the huge value behind the big data. This article research the characteristics and needs of user’s clothing care with the way of user profile, put forward the concept of user profile platform based on clothing care, design the structure of big data mining platform. And the platform can help the enterprises to have the initiative in precision marketing, designing products and determining the priority of business model. Above all, it will lay a foundation for the Internet of clothing care to achieve the business value.

The washing performance is that the ability of washing machine products to remove residual detergent, and it is an important parameter for judging the performance of a washing machine. The washing performance directly affects the health of users, and it has become one of the important factors when users choose a washing machine.After many years of testing, it is found that the water quality directly affects the performance of the washing machine according to the standard. The optimization suggestions are given through experimental analysis.

Silk fabrics have good luster, but the luster is easy to be worse after laundering. It is said that home ironing can improve this condition under certain conditions. The objective of this work is to discuss on the luster of silk fabrics from angles of fabric, laundering and ironing. The results indicates that the laundering factors such as the detergent pH, detergent amount, builder, water amount, water temperature, mechanical force of laundering, laundering time and times, and the ironing factors such as ironing temperature, humidity, and pressure cause Interaction among the molecules of the silk. The effect, fiber fibrillation and degradation change the surface state and morphological structure of the fiber, which affect the optical properties of the fabric surface and cause the luster change of the silk fabrics.

With the increasing market share of drum washing machine, consumers’ requirements for the quality are gradually increasing. And because consumers’ awareness of environmental protection has been strengthened, how to improve the basic performance of drum washing machine without increasing consumption (power, water and washing time ) has become the research direction of major companies. As one of the most important performance of drum washing machine, this paper will study how to improve the washing rate by supervision technology on the basis of not increasing the recording time, power and water consumption.

As a new heating equipment for this year, the Multi-connected low ambient temperature air source heat pump air heaters has been widely recognized by the industry people for its low price, near zero cost maintenance and high efficiency and energy saving, but most users have little solution to the Multi-connected air heaters, and the market lacks a unified evaluation. In order to make the users understand the functions of the Multi-connected air heaters and the evaluation system of the market, this paper gives a comprehensive introduction to the Multi-connected air heaters, and puts forward the evaluation method of the actual operation of energy saving effect. This method can effectively evaluate the energy saving effect of the Multi-connected air heaters blower in practice.

This article describes the main revisions of the GB 24849-2017 standard. Interpret the main content and standard terms in the new version of the standard, enumerate some examples, discuss some disputed terms and issues and summarize the test methods in practice.

This paper focuses on the low error rate, high recognition rate, off-line speech recognition refrigerator and control system. Taking MCU as the processing center, the audio data is collected by ADC in advance, and the collected audio data are combined with the algorithm to realize speech recognition. The speech recognition system with the directional noise reduction algorithm combined with the three MIC noise reduction algorithm is used as the human-computer interaction device of the refrigerator, adding the human detection and the arousal word trigger, and combining the MCU filtering algorithm and the signal window processing to greatly reduce the interference of the periodic environment noise to the speech interaction, and reduce the false trigger rate of the speech interaction, and improve the speech interaction. The accuracy of speech recognition. The refrigerator with the speech recognition control of this scheme is very practical, brings great convenience to the operation of the user. It is a great promotion, low cost and simple system in the human computer interaction of the intelligent refrigerator. It is a breakthrough operation method after the touch button operation of the refrigerator, which greatly improves the user experience. Thus, the market competitiveness of products is enhanced and potential development and expansion prospects are possible.

IEC 61347-1:2015 has been implemented in February 2015, the version of the standard supplements some test requirements. This article focuses on the differences between the two versions of the standard and makes a simple analysis. Designed to enable relevant designers and inspectors to quickly understand these changes while providing a new direction for future design and inspection work.

The system of screw chiller will easily occur exhaust temperature protection under the condition of low load and high pressure drop. Adding liquid injection in the general refrigeration can effectively improve it. What’s more, it can also ensure the system steadily running. But he volume of liquid injection should be under control in the system. And it can be achieved by throttle orifice and throttle capillary vessel. In this paper, we can provide a simple calculation method of throttle component.

In the design process of low-pressure air refrigeration system, due to its complex structure and meeting the specified cooling requirements. It is a design difficulty. This paper analyzes the structure of low-pressure air refrigeration system at first, and then discusses its structural design methods, including supercharger unit design, heat exchanger design, electromagnetic throttle valve design, cooling capacity adjustment measures, etc. In order to provide reference for related design activities. To solve the key and difficult problems in the design of low-pressure air refrigeration systems.

The significance of the appliance switch heating test is to monitor the heating of the sample itself when the switch installed on household and similar appliances is in normal or abnormal working condition. By measuring the heating temperature, we can judge whether the electrical structure design of the switch is reasonable, whether the material selection of each part of the switch is qualified, whether the switch is safe in use, etc.

Environmental protection has gradually become a key issue that people pay attention to. As an appliance widely used in People's Daily life, refrigerators must ensure strong environmental protection in the use process. Based on this, this paper will analyze the application performance of the new green environmental refrigerant R290, including the safety performance of the new green environmental refrigerant R290, the refrigeration performance of the new green environmental refrigerant R290 and the physical performance of the new green environmental protection refrigerant R290. And improving the quality of new type of green environmental protection refrigerants R290 in refrigerator application method, which mainly includes the refrigerator refrigerants in the choice of materials, the choice of throttling device in the refrigeration system, reduce the new type of green environmental protection refrigerants R290 leakage probability, avoid new green environmental protection refrigerants R290 gathered around and reduce the new type of green environmental protection refrigerants R290 flammable sources.

This paper mainly realizes the automatic design of product 3D model. In view of the characteristics of UG design software, a top-down design method is chosen to build a good product framework before the product is set, and then adjust the structure according to the actual key parameters, and the model can be regenerated quickly without the failure of regeneration. Using the parameter linking function of UG software, with the part template and the class thought of computer advanced language, the top-down and fully parameterized design of the product is realized. The function of a new model of a series of products can be generated by changing the top level parameters related to the actual engineering only. At the same time, the data of late production and procurement are exported quickly. This method has simple principle, easy mastery of structural designers and repeated use of modeling for a time. It has a broad application prospect for the rapid design of series product projects.

In this paper, the formulas of heat exchanging capacity by ε-NTU method for the fin tube heat exchanger as the condenser (dry surface) and the evaporator (wet surface) are given, and two practical applications by using ε-NTU method in the development of the air conditioners are described.

According to the requirements of chapter 14.1 of the new GB/T 19212.1-2016 standard implemented on March 1, 2017, and combined with small transformer products, the method of measuring the temperature rise of winding resistance by resistance method is analyzed. According to the experience of many years' testing and operation ability verification project, the temperature rise of winding resistance measured by resistance method is explained in detail through enumerating cases. Key steps and influencing factors.

This paper studies the electromagnetic interference (EMI) caused by using Mos drive to control fan motor in refrigerator main board, finds out the main EMI interference sources of fan motor drive circuit, and puts forward three schemes by adjusting the inductance of buck circuit to make it work in DCM mode, adding RC snubber circuit in parallel with the fly-wheel diode or reducing Mos switching speed, to solve the EMI problem.

Electric water heater have two types currently on the market, one is a single heating pipe in the water heater tank bottom, anther is two heating pipe, one in the bottom of the tank, one on the upper part of the tank, and around the outlet. This paper focuses on the temperature rise test about the two mode electric water heater according to the standard of GB 4706.1-1998 and the GB 4706.12-2006, each representative component of three modes is given the temperature rise, and conclude that the third modes of the first heating pipe at the bottom of the tank to stabilize and then switch to the upper electric heating tube to work to stable under this mode, the temperature rise is the highest temperature rise, the temperature rise test is the harshest states.