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> Intensifying competition with rotary machines, scroll compressors are upgraded to large cooling capacity
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In the first half of 2022, the complex and changeable global economic situation, repeated epidemics, sluggish domestic demand, and the "dual-carbon" policy were combined, and the domestic sales market of scroll compressors was sluggish, while the export market achieved recovery growth. The domestic and foreign sales markets are differentiated and developed. On the one hand, the competition between scroll compressors and rotary compressors in the small cooling capacity section continues to intensify. |
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Substitution in the light business sector continues |
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In the post-epidemic era, the scroll compressor market will resonate with the overall economic situation and market demand in the first half of 2022.
Industry online data shows that in the first half of 2022, the cumulative output of the scroll compressor industry was 1,305,400 units, a year-on-year decrease of 9.77%; the cumulative sales volume was 1,303,300 units, a year-on-year decrease of 9.37%; the cumulative domestic sales volume was 928,800 units, a year-on-year decrease of 15.16% %; the cumulative export volume was 374,500 units, a year-on-year increase of 9.13%.
As for the reasons for the decline of the domestic sales market, an industry insider pointed out that, firstly, the rotary compressor has made great progress in the cooling capacity range of 3HP~7HP in recent years due to the advantages of self-supply system, low cost and frequency conversion, and its market share has continued to rise. , invaded the market of scroll compressors in this refrigeration section. The relevant person in charge of Guangzhou Hitachi said: "Not only the 3HP~7HP refrigeration section, in fact, in the 3HP~10HP refrigeration section, the rotary compressor has realized a large-scale replacement of the scroll compressor, and the replacement is still in progress. The application field of compressors is squeezed to the application scenarios of more than 10HP. Second, in the first half of 2022, the outbreak of epidemics in Shanghai, Beijing, Jilin and other places, logistics and production were blocked, resulting in a decline in the operating rate of enterprises, weakening downstream demand, and vortex The domestic market of rotary compressors is sluggish.”
The performance of the scroll compressor export market and the domestic market is very different, which is related to the recovery of global market demand. An industry insider pointed out that, in fact, after the epidemic, the scroll compressor export market began to recover in 2021, setting an export growth rate of 33.2% that year, while the export growth rate in the first half of 2022 was only 9.13%.
So, which part of the scroll compressor market does the rotary compressor occupy? An industry insider pointed out: "From the perspective of subdivisions, more are small multi-connection and household heating, that is, household and light commercial applications. The commercial field is still the world of scroll compressors."
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In recent years, GMCC rotary compressors have been very successful in the field of small multi-connection, not only the production and sales have increased significantly, but also the technical layout has been more in-depth. According to GMCC, in order to meet the growing demand for small multi-connected products, GMCC has done a lot of work in product platform configuration, product differentiation functional requirements, and capacity response. In terms of product platform, GMCC has fully covered all the needs of 8kW~22kW small multi-connected products, and is preparing to deal with the next generation of small multi-connected energy efficiency and function upgrades, and develop new products. In response to the differentiated needs of small multi-units, for example, consumers have put forward high requirements for the heating comfort of small units in the past two years. GMCC has also mass-produced jet series of small units, which can cover all the above capabilities. part. At present, the shipments of GMCC jet series products are growing rapidly. In the first half of this year, the single product shipment of 16kW high-heat small multi-connected special compressors has exceeded 100,000 units, and the production capacity is expanding. It is expected to reach 3 dedicated lines by the end of this year. Scale to meet the growing demand for multi-purpose rotary compressors of both sizes, both jet and non-jet.
AVIC Sanyo's performance in replacing scroll compressors in the light business sector is also remarkable. According to reports, AVIC Sanyo's high-power double-cylinder octo-pole products with more than 10HP have been successfully developed and sold in batches. In the future, light business will become the company's key breakthrough area.
Driven by the coal-to-electricity clean energy policy, air-energy heat pump heating technology has developed rapidly, driving the rapid development of special compressors for heating heat pumps. In this market space, rotary compressors are well recognized in the field of household heating, and scroll compressors currently maintain their advantages in the field of commercial heat pump heating. GMCC revealed that GMCC successfully developed a compressor for CO2 heat pump water heaters as early as 2010, and the technology is still improving. Guangzhou Hitachi said that after several years of market cultivation and advanced technology, Guangzhou Hitachi's commercial air source heat pump business has expanded year by year, and currently accounts for 10% of the company's scroll compressor business. GMCC is a representative of the development of rotary heat pump compressors.
Not only that, rotary compressor companies are also increasing technology research and development to seize more market share in the application field of scroll compressors, and some rotary compressor companies have even launched scroll compressor products. The reporter from "Electrical Appliance" learned that Panasonic Wanbao has developed products with larger displacement, exceeding 80CC, in the field of commercial air conditioners and heat pump compressors to meet the current market demand for large-displacement rotary compressors. In addition, the sales of rotary compressors in refrigerated vehicles, medical freezers, parking air conditioners, RV air conditioners and other fields have shown a rapid growth trend.
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Towards a larger refrigeration segment market |
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Under the difficult market environment, in 2022, the development of scroll compressors will be mainly carried out from two aspects, one is frequency conversion, and the other is large cooling.
In terms of frequency conversion, Guangzhou Hitachi frequency conversion products have achieved absolute mainstream. According to the person in charge of the company, central air conditioning is the largest application field of Guangzhou Hitachi scroll compressors, accounting for about 80% of the company's business, followed by water machines. "In these two fields, the proportion of our frequency conversion products has reached 90%. In the future, we will continue to expand our dominant position in the field of frequency conversion scroll compressors and further increase the proportion of frequency conversion products." He said.
Emerson's variable frequency scroll compressors have formed several series, including high-pressure side 10HP~15HP variable frequency compressors, 10HP~15HP variable frequency air conditioner compressors and 25HP variable frequency compressors. Regarding the advantages of Emerson's variable frequency scroll compressor, it is reported that the Copeland 110cc variable frequency scroll compressor is compatible with the application of low GWP environmentally friendly refrigerants such as R32, and the equipped EVI jet enthalpy increase technology can effectively improve high ambient temperature and low ambient temperature. Based on air-cooled chillers, data centers and other operating conditions, the VCR variable compressor technology effectively improves the part-load energy efficiency ratio. Copeland 110cc variable frequency scroll compressor adopts three key technologies: scroll balance force optimization technology, double flexible scroll technology and optimized oil circulation design to ensure stable and reliable operation of the compressor, and has a wider operating range, which can take into account both air conditioning and heating Application, provide a total solution including frequency converter, system controller, expansion valve, shorten the system development time.
Inverter products are one of the three product lines of Danfoss scroll compressors. At present, Danfoss' inverter compressors have been iterated to the third generation. According to reports, Danfoss' third-generation inverter scroll compressor VZH can be applied in the commercial air conditioning and process cooling market of 15kW~184kW. It has the advantages of precise cooling and humidity management, low starting current, energy saving, etc., and exceeds the energy efficiency after upgrading. Require.
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However, an industry insider pointed out that although frequency conversion is the development trend of scroll compressors, the actual application ratio is not high.
For the quantification of large cooling capacity, this is a development trend commonly recognized by several companies interviewed by the "Electrical Appliance" reporter, and each company has made great progress in the layout of large cooling capacity products.
As a leader in scroll compressors, Emerson is at the forefront of the scroll compressor's large cooling capacity technology. According to the reporter of "Electrical Appliance", in 2021, Copeland ZFI series low-temperature scroll 40HP ZFI140 compressors will be officially mass-produced at Emerson's Suzhou plant. Copeland ZFI series 40HP low-temperature large scroll compressors continue the advantages of ZFI's full range of low-temperature scroll compressors. They adopt enthalpy injection technology (EVI) and are equipped with Emerson's CoreSense control module. They have high energy efficiency, compact design, and are compatible with a variety of Refrigerant, wider operating range, low operating noise and vibration. It is worth mentioning that the advent of Copeland ZFI series 40HP low-temperature large scroll compressors means that the capabilities of ZF series and ZFI series low-temperature scroll compressors are constantly improving. The demand for cooling capacity has fully covered the two-cylinder, four-cylinder, and six-cylinder traditional piston compressor product lines, and will provide customers with a variety of choices with high energy efficiency and cost-effective product solutions.
"In fact, many manufacturers have launched a single 25HP scroll compressor, and the output has been increasing. If the 100HP screw compressor is replaced, four 25HP scroll compressors can be connected in parallel in one module to achieve the same cooling effect. The performance is also better than that of the screw compressor, because the scroll compressor itself has high energy efficiency and low noise." An industry insider said. However, he also pointed out that although the scroll compressor has the practical advantages of replacing the screw compressor, the practical application is not very ideal, and there is still a long way to go to replace the scroll compressor as quickly as the rotary compressor.
In addition to frequency conversion and large cooling capacity, GMCC believes that in the future, based on the high energy efficiency of APF, the technology of scroll compressors will also be further developed towards low-temperature strong heat technology and low-noise mute technology; in addition, the use of environmentally friendly refrigerants in scroll compression The application of air conditioners will also be upgraded, and the application of environmentally friendly refrigerants R32 and R290 will spread rapidly.
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