The refrigeration unit is a part of the refrigeration system, or all the equipment, and they are assembled together into a whole. The refrigeration unit has a compact structure, a small footprint, flexible use, convenient management, and simple installation. Some of the units can be used only by connecting a water source and a power source. Due to the high profit of refrigeration units and the low barriers to entry, many companies have been attracted to compete in this field. For a long time, some voices have been heard in the industry. They believe that the requirements for refrigeration units are not high, “low threshold†and “everybody Can be assembled.†As a result, unscrupulous companies have become obstinate and have begun to exploit loopholes, leading to poor quality units flooding the market, returning repair machines, OEMs, counterfeit products and tyrants. Many companies still continue their manual workshops. The technology is unprofessional and quality. Problems such as non-guaranteed services and unsatisfactory services abound. Although they can obtain a certain market temporarily based on their price advantage, due to their low product quality and frequent failures, they will eventually be eliminated by the market. However, it has been a long time since the problems of assembling machines, cutting corners, and reducing materials were traced. For a long time, the definition of refrigeration unit related accessories is vague, and many fields of application are non-standard items. For example, vegetables, melons and fruits, and agriculture, animal husbandry and fishery have different requirements for the configuration of cold storage, and they cannot be assembled with uniform standards. Therefore, the unreasonable problems in the refrigeration unit market are highlighted. . It is understood that the core of the unit is the compressor, and the domestic compressor companies adopt the fuzzy definition of P number. In fact, the correct statement should be the amount of exhaust gas. Most dealers and users do not know the specific content of P number, resulting in a number of companies P count is not up to standard, such as the same 15P compressor, the displacement may only 8P, 10P or 12P, a good 8P compressor, exhaust volume May be equivalent to 15P. There is also a key to the unit is two devices, such as the condenser domestic many companies talk about the heat transfer area, the correct algorithm should be the amount of heat, many companies in order to save costs began to steal the area, reduce the fins, or the inner tube with copper or even iron pipe Instead, condensers that meet the standards are costly and naturally good. Looking at the performance of refrigeration units in the past decade or so, many people in the industry have commented that "the road to innovation is hard," and "war" seems to remain in its infancy. They analyzed the main problems existing in the frozen product market: 1. The industry is not standardized. Although the state has introduced many standards, it is not really a lot to do according to standards. Some bad competition has appeared, which has affected the development of the market; The overall level of products is still not very high. Although the domestic market for frozen products has also developed rapidly, the gap between them and European countries is still very large. The level of product design and technology have yet to be significantly improved; 3. The capacity for innovation is not enough. In respect of innovation in energy saving and environmental protection technologies, our innovation rate is not fast enough compared to European countries. Although there are various drawbacks in the development of the refrigeration unit industry in China, it is no doubt that its development market is good and its speed is fast. 2014 can be said to be a rapid year for the refrigeration industry. In recent years, China has successively introduced a series of policies to encourage and support the development of the refrigeration industry, such as agricultural cold chain logistics development planning, pharmaceutical cold chain logistics development planning, etc. The implementation of these policy plans has greatly stimulated the domestic refrigeration industry. According to statistics, the capacity of cold storage in China was nearly 18 million tons in 2013. In 2014, it reached more than 23 million tons, and the storage capacity increased by nearly 30%. The construction of cold storage in all regions is in full swing and is growing in a blowout style. Affected by these factors, the manufacturing industry of refrigeration units also saw a significant increase in 2014, and the data showed that the demand increased by about 30% compared with previous years. The enterprises that manufacture refrigeration units in China have also seen a situation where more capital has flowed into the industry. More new companies are emerging, and more parts companies are either producing refrigeration units instead. With the changes in market demand, many companies have gained a lot in market segments. For example, the impact of macroeconomic policies and market conditions on the unit is mainly reflected in the edible fungus industry, and investment in these projects has been significantly reduced in the past two years. In addition, the application of Freon in the field of industrial refrigeration has developed rapidly in the past ten years. It has been developed from a small cold storage to a large-scale cold storage of several kilotons or even tens of thousands of tons from the beginning; it has grown from a portfolio of several tens of square meters to a large one. Steel structure warehouse and multi-layer civil construction cold storage; From small-scale fresh-keeping and freezer development to large-scale preservation, air-conditioning, food processing workshops, low-temperature logistics, rapid freezing, quick-freezing tunnels and other forms. Although all walks of life have had unordered competition under the trend of interests, the survival of the fittest is the only way for the development of the industry. Short-term speculation can not maintain long-term operation. Refrigeration equipment companies still need to combine market and policy advantages, while increasing the technological content of products, and strive to create their own brand.
The sprayer can basically be divided into
the following parts:
Gun, tip, Motor & Drive System, pump
assembly, filter, Pressure Control, auxiliary spray accessories.
Gun
• Acts as the on/off valve for the material Spray Tip
• Controls the amount of fluid sprayed by using different
orifice sizes
• Orifice shape determines the spray pattern.
• Many Graco tips can be turned to the reverse position by hand to
blow out clogs
Motor & Drive System
• A heavy duty system that drives the pump
Pump
• Also called the Fluid Section
• Delivers a steady stream of high pressure fluid through the hose to
the Spray Gun filter,
• Prevent large particles from entering and avoid clogging the spray gun
Pressure Control
• Used to regulate the fluid pressure delivered from the pump
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