Chinese air-conditioning compressor industry development and market data statistical investigation

Chinese air-conditioning compressor industry development and market data statistical investigation 1. Analysis of development characteristics of air-conditioning compressor industry According to the theory of industrial economics and the opinions of Porter and other competitive strategy experts, if an enterprise wants to have a certain market share and a certain market control ability in the world, it must have a certain scale, a certain market share, a certain Economic control ability. To a certain extent, this determines the corresponding industry profits and the profits obtained by enterprises in the industry. On this basis, in order to provide the necessary conditions for the realization of industrial technology and organizational innovation, for the development and transition of the industry, and for the adjustment of the industrial structure, it is also possible to maintain and consolidate the advantages in the next stage of market strategy and competition . The current poor concentration of the domestic compressor industry is obviously not conducive to industrial development and transition, and it is also not conducive to the improvement of China's compressor industry's international competitiveness. 2. Analysis of investment status of air-conditioning compressor industry The air-conditioning compressor is the heart of the refrigeration system and the power source for the refrigerant to circulate in the system. The basic working principle of the refrigeration system mainly includes the four processes of compression, condensation, throttling and evaporation. The compressor compresses the low-temperature and low-pressure refrigerant into a high-temperature and high-pressure gas refrigerant, turns the refrigerant into a medium-temperature and high-pressure liquid refrigerant through a condenser, then turns into a low-temperature and low-pressure liquid refrigerant through a throttle expansion device, and finally turns into a low temperature through an evaporator Low-pressure gas refrigerant. After evaporating and absorbing a large amount of surrounding heat, the low-temperature and low-pressure refrigerant is drawn into the air-conditioning compressor for the next refrigeration cycle, and the cycle is repeated to achieve the cooling effect. Driven by sufficient confidence in the overall domestic sales market in the early stage and the steady growth of overseas air-conditioning compressor demand, compressor companies in the 18-year cold year have been active in production. Except for the production line under maintenance, other production lines are basically operating at full capacity. The industry as a whole opened higher and higher. The production and sales in September continued to grow year-on-year, still at a historically high level, but the growth rate slowed slightly. The main reason is that Meiji, AVIC Sanyo, Ruizhi, and Panasonic carried out equipment maintenance in September, and the production schedule was affected to a certain extent. Compressor companies unanimously reflected that the 17-year peak season was extended compared to previous years. The fierce market in the air-conditioning market in 2017 has broadened the company's new vision of market recognition. While attracting more resources to enter the air-conditioning field, it will also intensify competition in all aspects of the industry. For compressor companies, the trend of the market and the evolution of the living environment in 2018 and beyond will depend on products, prices and channel strategies. 4. Analysis on the technical development of the air-conditioning compressor industry In recent years, although the country has provided certain support in technology introduction, technological transformation, scientific research and development, etc., compared with foreign counterparts, China's compressor product manufacturers of key functional components have unstable product performance, manufacturing level and management level. The gap, the strength of talents, and the level of R & D are also relatively weak, so it is not enough to rely on an enterprise to improve the level of industrial development. In order to improve the market competitiveness of their main engines, many compressor manufacturers often choose imported supporting equipment, which causes domestic products, especially those with lower technological content, to decline in the domestic market share. Although China's export of compressor products has obvious advantages, it is mainly labor-intensive products, with large quantities, low prices, and low technology added value, which cannot meet market demand, and some products have to rely on imports. It was decided that industry enterprises must undergo a major adjustment, and even industry and brand reshuffle to solve these contradictions and problems. In the compressor industry, many manufacturers are fully aware of the current problems in the compressor industry. Some companies have begun to develop value-added services and gradually realized the transition from production-oriented manufacturing to service-oriented manufacturing. The most direct ones include the provision of power and energy overall solutions, compressor energy contract management, etc. , Information services and other business aspects, to provide social services to other enterprises. However, the problems existing in the industry are still very serious. In addition to the overall low-end technology, product structural problems such as homogenization of products, overcapacity, lack of high-end products, single industry, and price wars are serious. To examine and make long-term plans to avoid brands getting together and fighting. At this stage, the industrial structure of the compressor industry is converging, and the resource allocation is unreasonable. Moreover, the main body of investment is not to strengthen the professional direction in the use of funds, but to pursue a "big and complete" production system, resulting in industrial decentralization. To a large extent, the development problem of the compressor industry is not a technical problem but a brand planning and business concept. Turbine compressor In the petrochemical field, the domestic centrifugal compressors cannot meet domestic needs in terms of high technology and special products. In addition, there is still a gap with foreign countries in terms of technical level, quality and completeness. With the continuous expansion of China's petrochemical production scale, centrifugal compressors will face new issues in terms of large-scale, and there is no mature experience in the design and manufacture of these large-scale gas compressors in China. The centrifugal compressor needs to be developed to a large capacity to meet the requirements of China's petrochemical production scale. At the same time, with the development of new technologies, new gas seals, magnetic bearings and non-lubricated couplings, the development of turbo compressors The main changes in the trend are: the continuous development of high-pressure and small-flow products; further research on the ternary flow theory and its application to the design of impellers and blade diffusers and other components in order to achieve high-efficiency units; low noise, using noise protection Improve the operating environment. In the field of aerodynamics, centrifuges will be the next round of hot spots from the market feedback and new product release trends, especially the miniaturization of centrifuges. There are powerful domestic enterprises that have announced 40, 30 and 20 cubic centrifuges. Above 60 cubic meters, the compressor standard committee and the country prefer centrifuges because: first, the centrifuge saves energy; second, the centrifuge itself is oil-free. After 2015, the miniaturization of centrifuges is a hot spot. In the field of refrigeration and air conditioning, the current turbo compressor still maintains its advantages in a large cooling range. The centrifugal compressor has few and simple moving parts and low manufacturing accuracy, so its manufacturing cost is relatively low and its reliability is high. Due to the influence of screw compressors and absorption chillers, the development of centrifugal refrigeration compressors is relatively slow. Under the current technical conditions, centrifugal refrigeration compressors are mainly used for air conditioning in large buildings, and the demand is relatively small. Reciprocating compressor In the petrochemical field, reciprocating compressors are mainly developed in the direction of large capacity, high pressure, low noise, high efficiency, high reliability, etc .; constantly developing new gas valves operating under variable operating conditions to increase the life of the gas valve; In design, thermodynamics and kinetics theory are applied to predict the performance of the compressor under actual working conditions through comprehensive simulation; the mechanical and electrical integration of the compressor is strengthened, and computer automatic control is adopted to achieve optimized energy-saving operation and online operation. In the field of power, piston compressors currently occupy a larger market. However, with the improvement of people's requirements on usage environment, energy consumption and environmental protection, screw compressors will become the mainstream models. In the field of refrigeration and air conditioning, the reciprocating refrigeration compressor is a traditional refrigeration compressor, suitable for refrigeration systems with a wide range of refrigeration capacity. Although it is still widely used, its market share is gradually decreasing. At present, the main unit of the refrigeration system of refrigerators (including small freezing and refrigerating devices) is still dominated by reciprocating compressors. After years of design improvements and technological advances, the efficiency of reciprocating refrigerator compressors has greatly improved. At the same time, gratifying progress has also been made in refrigerant replacement technologies closely related to environmental protection. To further improve the efficiency of reciprocating refrigerator compressors and reduce system noise is its main development direction. (1) Linear (linear) compressor Linear compressor is a type of reciprocating compressor. Since the linear motion of the motor can directly drive the reciprocating motion of the piston, the complexity of the crank connecting rod mechanism and the resulting mechanical power consumption are avoided. The key technologies of the linear compressor are the design of the compressor oil circuit system, the effective control of the linear displacement limit point of the motor, and the corresponding anti-collision technology. (2) Swash plate compressor Swash plate compressor is also a modified structure of reciprocating compressor, which is mainly used in vehicle air conditioning system. After decades of development, the swash plate compressor has become a very mature model, occupying more than 70% of the market for automotive air-conditioning compressors. But its efficiency is lower than the rotary compressor, and the volume is larger. Due to the mature technology of the swash plate type automobile air-conditioning compressor, and the further improvement of technology, it will still retain a certain market share in the foreseeable future, but it is inevitable to be gradually replaced within a certain displacement range. Screw compressors Due to the mature technology of screw compressors and the lower threshold, enterprises entering the industry have sprung up as usual, and the brand positioning is similar. This not only includes many domestic enterprises, but also includes some well-known foreign production enterprises that enter China. As a result, under the premise of an unsatisfactory increase in total demand, enterprises have caused vicious competition. Often in the procurement of various compressor projects, the lowest price has been awarded as the basic principle of procurement. The domestic screw compressor market has entered an era of relatively surplus total. In addition, the screw compressor screw compressor has the characteristics of small size, light weight, easy maintenance, etc. It is a type of compressor that has developed rapidly. On the one hand, the screw profile and structural design have made great progress. On the other hand, the introduction of special milling machines for screw rotors, especially grinding machines, has improved the machining accuracy and processing efficiency of key parts, which has effectively improved the performance of screw compressors. At present, screw compressors are mainly used in compressed air and medium-sized refrigeration heat pump air conditioning systems. Due to the continuous improvement of the working reliability of the screw compressor, it has gradually replaced the reciprocating compressor within a certain range, and has occupied part of the market of the centrifugal compressor. Vane compressor Sliding vane compressors are a type of rotary compressors. The displacement is generally 0.3 ～ 3 m3 / min, and the market share is low. Rotary vane compressor is a modified structure of sliding vane compressor. Due to its good starting performance and little change in torque during compression, it is currently mainly used for mini cars and some tool vehicles with small displacement Air Conditioning System. The dynamic characteristics at high speed is the main technical research direction of this compressor. Scroll compressor Scroll compressors have developed rapidly in the past ten years and constitute a new bright spot in the development of compressor technology. At present, scroll compressors have an absolute advantage in the field of cabinet air conditioners. In the field of automotive air conditioning, the refrigeration coefficient of scroll compressors has reached 2.0, showing strong competitiveness. The development of scroll compressors is to expand the range of refrigeration capacity, further improve efficiency, use alternative working fluids and reduce manufacturing costs.

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