【 Weak current College 】 heat recovery compressor technology history

Compressor if by purpose, can be divided into the room air conditioner on compressors, air compressor and refrigerator on the compressor and other uses of several broad categories. compressor

First, the room air conditioner

In the field, on developments in the compressor can be summarized as follows:

1. production to China and Central Asian countries

In order to further reduce the price, the main air conditioning manufacturers will produce go to labor cost more inexpensive Chinese and East Asian countries. These manufacturers will output the scroll or rotary compressor is installed in the local production of air conditioning equipment, such as Panasonic ready in its Guangzhou plant production R410A DC scroll compressor, and install them to the local production of room air conditioner on, then they are exported to Japan. At the same time, Panasonic will also sell to local compressor competitors to production of room air conditioner.
2. transformation of the HFC refrigerants

In Japan, already has more than 95% of R410A refrigerant has changed, but in the Chinese and East Asian countries, R22 refrigerant is still seems to be one step in the world. Nevertheless, the transformation to R410A is expanded, five years later, R410A refrigerant share will increase to 25%.

3, higher-efficiency ratio, frequency conversion control of development speed

In Japan, in order to meet the "energy-saving method to modify the case", the energy of competition is intensifying. In this way, as shown in table 1, the major manufacturers of 2.8KW models refrigeration/heating average EER 5.89-6.01 has been reached. The use of room air conditioner compressor is rotating, tilting or scroll. The room air conditioner has been upgraded to become a high-end models, using R410A refrigerant, frequency control and high-efficiency DC motor. In order to prevent global warming, global energy conservation-oriented is extremely necessary. China is preparing to join the WTO as the turning point, the energy requirement of legalization.

GD midea-compressor co., Ltd. Mr. estimation of K.Kumashiro: by 2005, the Chinese room air conditioners, DC inverter compressor ratio will rise to 30%.

In 1981, the first Inverter control of variable speed rotary compressor for the first time on the use of room air conditioners. This compressor greatly improves energy efficiency, increasing comfort and speed up the room air conditioner zhinuan speed.

A two-cylinder rotary compressor (rolling piston) in 1985, the first in Japan to the commercial air conditioning. As a result of improved vibration characteristics, it is a large rotating compressor development extension flat road. In 1988, applied to room air conditioner on the frequency conversion control-cylinder rotary compressor appeared, its low-speed operation range can be expanded, so that the power change scope than the original model more than doubles. This further enables energy-saving, reducing vibration and noise levels, improve the comfort of the room.

4, the latest research results

Matsushita Electric Corporation in 2002, Purdue compressor technique Conference Announces carbon dioxide DC Brushless motor scroll compressor, the displacement is 4cc. Matsushita also claims that the rate by adjusting the oiling, CO2 compressor energy efficiency than you can with R410A Vortex compression

Press fairly. Italy's Ddlonghi also offers 3 models of 2-3.6KW of split, R290 (propane) used as a refrigerant.

Second, combined separate machines and conditioning

The characteristics of the development of the compressor can be summarized as follows:

1. the improvement of energy efficiency performance

In the United States, "the new standard for home air conditioning energy efficiency" has determined the seasonal energy efficiency ratio (SEER) from 10 to 12, increased 20%, and from 2006 may formally implemented. This will promote energy-saving performance competition. It now appears, Copeland scroll compressors will improve the SEER, Tecumseh will improve piston "Vector" series of SEER and Bristol is ready to raise the piston "Inertia" series of SEER.

In Japan, as the "energy-saving method to modify the case" enacted energy competition already began to increase, this year the average commercial air-conditioner cooling/heating energy efficiency ratio in 5 p series has reached 4.03-4.50, far exceeding the "modify".

Another benefit of competition for consumers is the energy consumption, reduced competition in 2001, the Japan Refrigeration and air conditioning industry association contrast made new computing standards.

China is prepared to WTO accession as a starting point, in that regard the establishment of a standard.

2. promote the transition to the HFC

In 2004 the HCFC models proportional control in 65% from the HFC transition has been in steady progress.

In Japan, the 40% of the business has combined air-conditioning refrigerant R407C or R410A to. Daikin on 1 April 2003 introduced 5-16 horses of R410A multi-split Office air conditioning, also prepared in 2003 and refrigeration year all refrigerant R410A all swap.
In the United States, R22 is still the mainstream of conditioning refrigerant, is to use R410A ratio only about 3%. In Europe, has been converted to use R407C's ratio to approximately 40%. In China and East Asia, to HFC transformation ratio of less than 1%.
3. to speed up the transition of variable frequency control

To reduce the amount of air conditioning, energy consumption is the most effective method is to compressor for effective power control.

In 2001, Toshiba-Kalee developed a two-cylinder rotary compressor, power of up to 6 p, using R410A refrigerant, is a DC motor and Inverter control. This was compounded by the Japan AirManufacturers of competition between energy-efficiency ratio.

In addition to 1.5-6hp combined commercial air-conditioner, Toshiba carrier also introduced 8 p and 10 p's double frequency conversion control DC-cylinder rotary compressor, its energy efficiency can reach 3.90 separately and 3.60, well beyond the new energy law 3.07 standards.

Japan scroll compressor manufacturers have developed Inverter control of scroll compressor, air conditioner, power-1-13 p refrigeration power for 2-10, and take this and rotary compressor. Copeland also has developed digital scroll compressor, is Samsung's digital adjustable multi-split system.

4, multi-split air conditioning and gas heat pump (GHP) may enter the European and Chinese markets

Japan market on multi-split air conditioner of annual demand about 100000 from top to bottom. As a result of a drag-and-more air than the central air conditioner can save 30% of equipment investment, operation and even simpler, so in Japan quite popular on the market. As further improve product reliability, multi-split air conditioner is entering the European and Chinese markets.

At the same time, the GHP (gas heat pump) is quickly into the Japan market. Them in cold areas to show greater heating, especially suitable for the use of power supply. It is the same reason, they went into the European and Chinese markets and the prospects are also very beautiful.