商业机械
Your location:
Homepage
/
/
/
Principle of refrigeration system and function of common components

Principle of refrigeration system and function of common components

(Summary description)1、 Refrigeration principle The refrigeration compressor reduces the vapor Freon into a vapor refrigerant with ultra-high pressure and high temperature, and sends it to the cooler of the external unit of the air conditioner as a liquid refrigerant. The liquid refrigerant organizes the throttle valve through the throttle valve. Then, the refrigerant enters the condenser to digest and absorb the heat in the air and gasify into vapor refrigerant. Then, the vapor refrigerant returns to the refrigeration compressor and shrinks again, and the circulation system carries out refrigeration again. In the case of heating, there is a four-way valve to reverse the moving direction of the refrigerant in the cooler and condenser and cooling. Therefore, in the case of heating, cold air is blown outdoors and warm air is blown in the room. 2、 Key components of refrigeration 1. Refrigeration compressors can be divided into centrifugal fans, tubular compressors and rotary compressors. Common air compressors are: Scroll compressor; Screw compressor; Piston compressor; Centrifugal compressor. Fully enclosed piston compressor: 1-20 cold tons, used for commercial space or household equipment. Semi enclosed piston compressor: mainly used for freezer and refrigeration equipment. Motor rotor refrigeration compressor: Nowadays, it is mostly used for refrigeration equipment below 7 pieces. The overturned stator refrigeration compressor has few parts, simple structure, no suction valve, small clearance capacity, small size, light weight and stable operation. Scroll compressor: the volume of single machine version is 3HP ~ 25HP, which is mainly used in household central air conditioning (household and commercial). The vortex machine has the advantages of high efficiency, environmental protection and energy saving, low noise, small size, light weight, stable operation, small cyclone pulse and long service life. Screw compressor: the volume of single machine is 40hp ~ 400hp, which is suitable for commercial air conditioning and other large machinery and equipment. Simple structure, few spare parts, relatively large differential pressure, low exhaust pipe temperature, excellent gas gathering station adjustment characteristics. Centrifugal compressor: centrifugal fan refrigeration compressor. During operation, the working pressure of gas is increased by means of the transformation of mechanical energy. The single version of centrifugal compressor has the characteristics of high power and stable operation.

Principle of refrigeration system and function of common components

(Summary description)1、 Refrigeration principle

The refrigeration compressor reduces the vapor Freon into a vapor refrigerant with ultra-high pressure and high temperature, and sends it to the cooler of the external unit of the air conditioner as a liquid refrigerant. The liquid refrigerant organizes the throttle valve through the throttle valve.

Then, the refrigerant enters the condenser to digest and absorb the heat in the air and gasify into vapor refrigerant. Then, the vapor refrigerant returns to the refrigeration compressor and shrinks again, and the circulation system carries out refrigeration again.

In the case of heating, there is a four-way valve to reverse the moving direction of the refrigerant in the cooler and condenser and cooling. Therefore, in the case of heating, cold air is blown outdoors and warm air is blown in the room.

2、 Key components of refrigeration

1. Refrigeration compressors can be divided into centrifugal fans, tubular compressors and rotary compressors.

Common air compressors are:

Scroll compressor;

Screw compressor;

Piston compressor;

Centrifugal compressor.

Fully enclosed piston compressor: 1-20 cold tons, used for commercial space or household equipment.

Semi enclosed piston compressor: mainly used for freezer and refrigeration equipment.

Motor rotor refrigeration compressor: Nowadays, it is mostly used for refrigeration equipment below 7 pieces. The overturned stator refrigeration compressor has few parts, simple structure, no suction valve, small clearance capacity, small size, light weight and stable operation.

Scroll compressor: the volume of single machine version is 3HP ~ 25HP, which is mainly used in household central air conditioning (household and commercial). The vortex machine has the advantages of high efficiency, environmental protection and energy saving, low noise, small size, light weight, stable operation, small cyclone pulse and long service life.

Screw compressor: the volume of single machine is 40hp ~ 400hp, which is suitable for commercial air conditioning and other large machinery and equipment. Simple structure, few spare parts, relatively large differential pressure, low exhaust pipe temperature, excellent gas gathering station adjustment characteristics.

Centrifugal compressor: centrifugal fan refrigeration compressor. During operation, the working pressure of gas is increased by means of the transformation of mechanical energy. The single version of centrifugal compressor has the characteristics of high power and stable operation.

Information

1、 Refrigeration principle

The refrigeration compressor reduces the vapor Freon into a vapor refrigerant with ultra-high pressure and high temperature, and sends it to the cooler of the external unit of the air conditioner as a liquid refrigerant. The liquid refrigerant organizes the throttle valve through the throttle valve.

Then, the refrigerant enters the condenser to digest and absorb the heat in the air and gasify into vapor refrigerant. Then, the vapor refrigerant returns to the refrigeration compressor and shrinks again, and the circulation system carries out refrigeration again.

In the case of heating, there is a four-way valve to reverse the moving direction of the refrigerant in the cooler and condenser and cooling. Therefore, in the case of heating, cold air is blown outdoors and warm air is blown in the room.

2、 Key components of refrigeration

1. Refrigeration compressors can be divided into centrifugal fans, tubular compressors and rotary compressors.

Common air compressors are:

Scroll compressor;

Screw compressor;

Piston compressor;

Centrifugal compressor.

Fully enclosed piston compressor: 1-20 cold tons, used for commercial space or household equipment.

Semi enclosed piston compressor: mainly used for freezer and refrigeration equipment.

Motor rotor refrigeration compressor: Nowadays, it is mostly used for refrigeration equipment below 7 pieces. The overturned stator refrigeration compressor has few parts, simple structure, no suction valve, small clearance capacity, small size, light weight and stable operation.

Scroll compressor: the volume of single machine version is 3HP ~ 25HP, which is mainly used in household central air conditioning (household and commercial). The vortex machine has the advantages of high efficiency, environmental protection and energy saving, low noise, small size, light weight, stable operation, small cyclone pulse and long service life.

Screw compressor: the volume of single machine is 40hp ~ 400hp, which is suitable for commercial air conditioning and other large machinery and equipment. Simple structure, few spare parts, relatively large differential pressure, low exhaust pipe temperature, excellent gas gathering station adjustment characteristics.

Centrifugal compressor: centrifugal fan refrigeration compressor. During operation, the working pressure of gas is increased by means of the transformation of mechanical energy. The single version of centrifugal compressor has the characteristics of high power and stable operation.

Scan the QR code to read on your phone

Related News

Semi

Semi closed piston compressor enters a new stage of game, do you understand?

Insiders pointed out that with the gradual standardization of China's compressor industry, the market competition is becoming increasingly fierce, and the polarization is beginning to take shape. There is not only a dispute between brands of semi sealed piston compressors, but also a dispute between scroll series and screw compressors. At present, there are many piston compressor enterprises active in China's refrigeration market, such as bizel, Foxconn, duling, raffkang, Bock, Zhejiang Daming, Suzhou Lixi, bolette, Jiangsu Huarui, Zhejiang Commercial Machinery Factory, Shenyang shenyileng, Taizhou Jingwei, Jinhua walker, Jiangsu Xuemei, etc. If the data of enterprises such as bizel, Zhejiang Daming, Foxconn, lefkang, GEA, bolette and Lixi refrigeration grow steadily, it is bound to seize the share of other brands when the overall market demand changes little. Therefore, industry experts predict that the polarization of semi closed piston compressor brand is becoming more and more obvious. "The competition in the compressor market is fierce. After the screening and precipitation of the market, all compressor manufacturers will show their original shape, and it will be clear at a glance whether they can or not. There is a saying that long-distance running depends on endurance." Xie Xinjiang, chairman of Zhejiang Daming refrigeration, pointed out that after fierce competition, the industry may "shuffle", and the choice of the market is always smart. At the same price, there is a higher quality option; With the same quality, there are better services and policy options. In the future, the product competition will gradually transform into the pursuit of higher fields such as performance, reliability, energy conservation, environmental protection and service. At this time, what enterprises should do is to improve quality and service. In the face of competition, Bizel discusses from multiple perspectives: "There is no shortage of market competition, but enterprises must first achieve benign competition on the premise of independent intellectual property rights; from the perspective of market demand, the bigger the cake makes customers selective changes, but enterprises with long-term planning will continue to compete for a long time only if they really start from customer demand. Each product has its own applicability, and giving full play to its advantages is the key; in addition, with the proposal of the goal of carbon neutralization and carbon peak, good enterprises should also Have a sense of market responsibility, which is also the focus of many end customers when choosing. " In addition, in the refrigeration compressor market, the competition among piston, scroll and screw is fierce. Piston compressor competes with scroll and screw compressor in the small cooling capacity range and large cooling capacity range respectively, especially in the small cooling capacity range. Scroll compressor continues to erode the market share of piston compressor by virtue of its advantages in energy efficiency, volume, noise and price. Based on this, insiders determine that the semi closed piston compressor will still be in a stable development trend in the next few years, and the fluctuation will not be too large. According to the analysis of Mr. Ivan, the person in charge of Fuji Howe China: "I agree that the market share of piston machines is eroded by the vortex machine and screw machine market, but I firmly believe that the piston machine market will not shrink, but will continue to occupy a certain market share. The theoretical logic behind it is that at low evaporation temperature, the COP value of piston machines is higher than that of vortex machines, and the cost performance of piston machines within 30HP is much higher than that of screw machines. Fuji Howe can still foresee a similar growth trend in the next 2-3 years. ”
2022-05-17
Semi

Semi closed piston compressor enters a new stage of game, do you understand?

Insiders pointed out that with the gradual standardization of China's compressor industry, the market competition is becoming increasingly fierce, and the polarization is beginning to take shape. There is not only a dispute between brands of semi sealed piston compressors, but also a dispute between scroll series and screw compressors. At present, there are many piston compressor enterprises active in China's refrigeration market, such as bizel, Foxconn, duling, raffkang, Bock, Zhejiang Daming, Suzhou Lixi, bolette, Jiangsu Huarui, Zhejiang Commercial Machinery Factory, Shenyang shenyileng, Taizhou Jingwei, Jinhua walker, Jiangsu Xuemei, etc. If the data of enterprises such as bizel, Zhejiang Daming, Foxconn, lefkang, GEA, bolette and Lixi refrigeration grow steadily, it is bound to seize the share of other brands when the overall market demand changes little. Therefore, industry experts predict that the polarization of semi closed piston compressor brand is becoming more and more obvious. "The competition in the compressor market is fierce. After the screening and precipitation of the market, all compressor manufacturers will show their original shape, and it will be clear at a glance whether they can or not. There is a saying that long-distance running depends on endurance." Xie Xinjiang, chairman of Zhejiang Daming refrigeration, pointed out that after fierce competition, the industry may "shuffle", and the choice of the market is always smart. At the same price, there is a higher quality option; With the same quality, there are better services and policy options. In the future, the product competition will gradually transform into the pursuit of higher fields such as performance, reliability, energy conservation, environmental protection and service. At this time, what enterprises should do is to improve quality and service. In the face of competition, Bizel discusses from multiple perspectives: "There is no shortage of market competition, but enterprises must first achieve benign competition on the premise of independent intellectual property rights; from the perspective of market demand, the bigger the cake makes customers selective changes, but enterprises with long-term planning will continue to compete for a long time only if they really start from customer demand. Each product has its own applicability, and giving full play to its advantages is the key; in addition, with the proposal of the goal of carbon neutralization and carbon peak, good enterprises should also Have a sense of market responsibility, which is also the focus of many end customers when choosing. " In addition, in the refrigeration compressor market, the competition among piston, scroll and screw is fierce. Piston compressor competes with scroll and screw compressor in the small cooling capacity range and large cooling capacity range respectively, especially in the small cooling capacity range. Scroll compressor continues to erode the market share of piston compressor by virtue of its advantages in energy efficiency, volume, noise and price. Based on this, insiders determine that the semi closed piston compressor will still be in a stable development trend in the next few years, and the fluctuation will not be too large. According to the analysis of Mr. Ivan, the person in charge of Fuji Howe China: "I agree that the market share of piston machines is eroded by the vortex machine and screw machine market, but I firmly believe that the piston machine market will not shrink, but will continue to occupy a certain market share. The theoretical logic behind it is that at low evaporation temperature, the COP value of piston machines is higher than that of vortex machines, and the cost performance of piston machines within 30HP is much higher than that of screw machines. Fuji Howe can still foresee a similar growth trend in the next 2-3 years. ”
2022-05-17
Semi

Semi closed piston compressor enters a new stage of game, do you understand?

Insiders pointed out that with the gradual standardization of China's compressor industry, the market competition is becoming increasingly fierce, and the polarization is beginning to take shape. There is not only a dispute between brands of semi sealed piston compressors, but also a dispute between scroll series and screw compressors. At present, there are many piston compressor enterprises active in China's refrigeration market, such as bizel, Foxconn, duling, raffkang, Bock, Zhejiang Daming, Suzhou Lixi, bolette, Jiangsu Huarui, Zhejiang Commercial Machinery Factory, Shenyang shenyileng, Taizhou Jingwei, Jinhua walker, Jiangsu Xuemei, etc. If the data of enterprises such as bizel, Zhejiang Daming, Foxconn, lefkang, GEA, bolette and Lixi refrigeration grow steadily, it is bound to seize the share of other brands when the overall market demand changes little. Therefore, industry experts predict that the polarization of semi closed piston compressor brand is becoming more and more obvious. "The competition in the compressor market is fierce. After the screening and precipitation of the market, all compressor manufacturers will show their original shape, and it will be clear at a glance whether they can or not. There is a saying that long-distance running depends on endurance." Xie Xinjiang, chairman of Zhejiang Daming refrigeration, pointed out that after fierce competition, the industry may "shuffle", and the choice of the market is always smart. At the same price, there is a higher quality option; With the same quality, there are better services and policy options. In the future, the product competition will gradually transform into the pursuit of higher fields such as performance, reliability, energy conservation, environmental protection and service. At this time, what enterprises should do is to improve quality and service. In the face of competition, Bizel discusses from multiple perspectives: "There is no shortage of market competition, but enterprises must first achieve benign competition on the premise of independent intellectual property rights; from the perspective of market demand, the bigger the cake makes customers selective changes, but enterprises with long-term planning will continue to compete for a long time only if they really start from customer demand. Each product has its own applicability, and giving full play to its advantages is the key; in addition, with the proposal of the goal of carbon neutralization and carbon peak, good enterprises should also Have a sense of market responsibility, which is also the focus of many end customers when choosing. " In addition, in the refrigeration compressor market, the competition among piston, scroll and screw is fierce. Piston compressor competes with scroll and screw compressor in the small cooling capacity range and large cooling capacity range respectively, especially in the small cooling capacity range. Scroll compressor continues to erode the market share of piston compressor by virtue of its advantages in energy efficiency, volume, noise and price. Based on this, insiders determine that the semi closed piston compressor will still be in a stable development trend in the next few years, and the fluctuation will not be too large. According to the analysis of Mr. Ivan, the person in charge of Fuji Howe China: "I agree that the market share of piston machines is eroded by the vortex machine and screw machine market, but I firmly believe that the piston machine market will not shrink, but will continue to occupy a certain market share. The theoretical logic behind it is that at low evaporation temperature, the COP value of piston machines is higher than that of vortex machines, and the cost performance of piston machines within 30HP is much higher than that of screw machines. Fuji Howe can still foresee a similar growth trend in the next 2-3 years. ”
2022-05-17
The

The technical standard defines the evaluation benchmark of green (Design) products of fully enclosed scroll refrigerant compressor for the first time

Fully enclosed scroll refrigerant compressors are widely used in domestic and industrial air conditioners (heat pumps), heat pump water heaters (heaters), refrigeration and other fields. The supporting downstream products mainly include unit air conditioners, multi on-line, modular machines, water (ground) source heat pumps, automobile air conditioners, etc. they are used in many industries of people's life and society. They are the main energy consuming components of air conditioning products. Promoting and implementing the green design of fully enclosed scroll refrigerant compressor products is of great significance to the realization of green emission reduction and "double carbon" goals in the manufacturing industry! Recently, approved by the Standardization Working Committee of China Society of mechanical engineering, the standard of green product evaluation specification for fully enclosed scroll refrigerant compressor (T / CMEs 20002-2022) was officially released. The standard was organized by the fluid engineering branch of China Society of mechanical engineering and led by Hefei General Machinery Research Institute Co., Ltd. The standard was officially implemented in February 2022. Based on the concept of green design, analyze and evaluate the energy consumption, resource consumption and environmental impact of products in the whole life cycle of design, manufacturing, testing, use and waste treatment, implement the ideas and principles of effective utilization of energy, rational utilization and recycling of resources and utilization of advanced energy-saving technologies, and control energy consumption, resource consumption, emission and pollution from the source, Achieve the goal of energy conservation and emission reduction. Fig. 4 fully enclosed scroll refrigerant compressor is widely used The technical discussion and practical research on the green design of industrial and commercial refrigerant compressors in China started late and has not been improved. At the current time of the vigorous development of China's refrigeration and air conditioning key component industry represented by fully enclosed scroll refrigerant compressors, we should start to promote its green product evaluation, and then guide the planning and R & D according to the green requirements in product design, so as to strictly ensure the complete green characteristics of products. The technical standard specifies the evaluation requirements and evaluation methods of fully enclosed scroll refrigerant compressor as a green product, which is applicable to the fully enclosed scroll refrigerant compressor for steam compression refrigeration system driven by motor (the electric scroll air conditioner compressor for new energy vehicles can be used for reference), and defines the pollutant emission, quality management, environmental management and other systems, advanced technologies and processes of production enterprises According to the basic requirements of green supply chain management, four first-class indexes of resource attribute, energy attribute, environmental attribute and quality attribute of fully closed scroll refrigerant compressor are put forward; Decompose one or more evaluation criteria at the next level, and put forward the evaluation criteria at the next level. Among them, the resource attribute includes three secondary indicators: the content of harmful substances in products, recyclable marks, packaging and packaging materials; The energy attribute corresponds to the secondary index of refrigeration performance coefficient; Environmental attributes include renewable utilization rate, refrigerant type, refrigerant recovery, noise and vibration; Quality attributes include secondary indicators such as refrigerating capacity, input power, moisture resistance, electrical strength, protection of easily accessible live parts, leakage current and so on. The technical standard defines the evaluation benchmark of green (Design) products of fully enclosed scroll refrigerant compressor for the first time, and solves the problem of the lack of green product evaluation system of fully enclosed scroll refrigerant compressor. It is of great significance to improve the green manufacturing standard system of key components of refrigeration and air conditioning industry in China and advocate the full life cycle evaluation of social energy products. Founded in 1982, the fluid engineering branch of the Chinese society of mechanical engineering is a national professional branch of the Chinese society of mechanical engineering specializing in academic research and scientific and technological exchanges in the field of fluid engineering. Academician Gao Jinji, Academician Wang Yuming and other well-known experts of the Chinese Academy of engineering have served in the branch. The branch is currently the seventh Committee, and the current chairman is Academician Li Gensheng. The seventh Committee has nine professional research di
2022-05-17

Hotline:0571-88086095

After sales:0571-88133312

Accessories sales:0571-88121275

Online Message

Username used for comment:
Message
Description:
验证码

Zhejiang Commercial Machinery Factory Co., Ltd.           浙ICP备05030721号-1             Powered by www.300.cn      hangzhou