Zhejiang Sanwei Electric Co., Ltd. is located in Ningbo, a port city with beautiful scenery and developed transportation. It is a manufacturer of cooling and heating equipment integrating R & D, production, sales and service. The company's main products include: industrial chillers and profile oxidation Water chiller, hard oxidation water chiller, electroplating water chiller, plastic machinery water chiller, leather embossing water chiller, laser water chiller, solar photovoltaic water chiller, textile and chemical fiber water chiller, printing and dyeing printing water chiller, industrial oil chiller, low temperature B Second (salt water) unit, chemical reactor low temperature unit, water (ground) source heat pump unit, air energy heat pump unit, constant temperature swimming pool unit, constant temperature aquaculture unit, electroplating special high temperature heat pump unit, high temperature heat pump drying unit, wood drying unit , Bamboo product drying unit, agricultural product drying unit, industrial drying unit, anti-corrosion acid and alkali resistant chiller, special explosion-proof chiller, freezer, fresh storage, quick-freezing cold storage, constant temperature cold storage, used in industrial and agricultural production. Kinds of industries.

   1. Surface treatment industry: mainly used for profile oxidation, hard oxidation, electrophoretic coating, zinc plating, tin plating, nickel plating, gold plating, silver plating, acid copper plating, vacuum coating, ion coating, glass coating, etc. In the oxidation, electroplating, and electrophoresis industries, the bath solution generates heat under high frequency reaction, which gradually increases the bath temperature. When the temperature of the plating solution is higher than the process requirements, the firmness and uniformity of the coating on the product surface Degree, flatness and surface finish have a greater impact. The cold water will stabilize the metal and non-metal ions, make the metal ions attach to the surface of the plated parts, increase the density and smoothness of the plated parts, shorten the plating cycle, reduce the loss of plating materials, and can recover chemicals, cool and maintain the plating solution The constant temperature will greatly help the production process and production efficiency.

   2. Plastics and plastics industry: including injection molding, extrusion molding, bottle blowing, compression molding, blown film, shower film, calendered film, cast film, training, leather embossing, etc. The cold water machine is used to cool the mold of the plastic processing machinery, which can make the surface of the plastic product smooth, reduce the surface marks and internal stress of the plastic product, and prevent the product from shrinking or deforming. In the middle, after the condensation, the mold is opened to eject the molded plastic workpiece. In the continuous production process, the mold needs to be cooled to shorten the plastic condensation time and help the dimensional accuracy of the workpiece, molding quality, and surface quality. If the plastic containers, bottle blowing and packaging films cannot be cooled and shaped in time during the production process, the produced containers will not be full, the wall thickness is uneven, the color is not bright, and they cannot be formed, resulting in lower product quality. Using a chiller can not only greatly Help product quality but also help production efficiency. In the cold water machine used in the extrusion wire and pellet pumping industry, the shell and tube type of the evaporator is a closed loop, and there is no problem of overflow. The temperature of the chilled water is 7-18 ° C. The cooling capacity of the chiller is related to the injection volume of the injection molding machine. The larger the injection volume, the greater the cooling capacity required.

   3. Machinery manufacturing industry: applied to CNC machine tools, coordinate boring machines, machining centers / combined machine tools and precision machine tools, grinding machines, milling machines, drilling machines, polishing, grinding, casting, die casting, high frequency welding, laser welding, electronic chips, circuits Board manufacturing, ultrasonic cleaning, printing and dyeing printing, ink production, paper making, glass processing, composite flooring, concrete mixing, etc.

   4. Textile and chemical fiber industry: the application process mainly includes raw material slicing, drying, yellowing machine, mixing machine, dissolving machine, air static

 Adjustment.

   5. Pharmaceutical, chemical and food industries: reaction kettle cryogenic units, food-grade chillers, and air purification regulator units. The reactor low temperature unit is used to maintain the low temperature conditions required for the biochemical reaction in the reactor, for the rapid cooling of raw materials, to prevent the deterioration of materials, etc., low temperature crystallization extraction, low temperature extraction, low temperature synthesis, the temperature range can be 30 degrees to minus 110 degrees Adjustable between, the cooling range is 10 --- 1000KW.

Food-grade chiller: After the food is processed at high temperature, in order to be able to be packaged, the temperature of the food needs to be able to meet the packaging requirements. The processed food is cooled with an industrial chiller to meet the requirements. In addition, in the process of food fermentation, different temperatures are also needed to stabilize the fermentation. Therefore, in order to control the quality of product fermentation, a chiller is required to control the temperature.

Air purification and conditioning unit: In pharmaceutical chemical industry, dust-free workshop and other occasions, the temperature, humidity and cleanliness of the use environment must be controlled within a certain range. The surface cooler of the water chiller is designed to be integrated with the air purification device, which can control the temperature of a large area environment and realize the purification and dedusting of a large area environment. Generally, the centralized air supply method is adopted, which has the function of constant temperature and constant humidity. Central air conditioning is more convenient and easier to use.

   6. Solar photovoltaic industry: supporting equipment that requires chiller cooling in the production of solar photovoltaic products are vacuum pumps, texturing, PECVD, diffusion, etching, screen printing, polycrystalline furnaces, monocrystalline furnaces, polycrystalline silicon, monocrystalline silicon, cutting Square machine, slicer, ingot furnace and other equipment. The particle size of the water particles is not easy to be greater than 10 microns, the temperature range of the water supply is 15-20 degrees, the temperature difference between the inlet and outlet water is within 5 degrees, and the pipe material should be stainless steel, PVC, or PPR. The chiller can control the temperature required by the process in a constant range, improve production efficiency and product quality, and equipment life. For a production line with an annual production capacity of 50MW, the cooling water required by the supporting equipment is about 15 tons per hour.

   7. Industrial oil cooler: Industrial oil cooler is mainly suitable for equipment and devices that need to reduce and maintain the temperature of lubricating oil or hydraulic oil, such as precision machine tools, CNC machine tools, coordinate boring machines, grinding machines, machining centers, combined machine tools, hydrostatic bearings , High-speed spindle, electric spindle and various precision machine tool spindle lubrication and cooling of the transmission medium of the hydraulic system, can accurately control the temperature required by the equipment, prevent thermal deformation of the machine tool and the center deviation of the machine tool spindle, stabilize the oil pressure, prevent oil oxidation, Evaporate, maintain the viscosity of lubricating oil, improve the machining accuracy of the machine tool, thus greatly improve the production efficiency and product quality, and extend the service life of equipment and tools.

   8. Marine refrigeration unit: Marine refrigeration unit is a special equipment used in ship air conditioning system and ship refrigeration, freezing, low temperature seawater freshness storage and other occasions. It has the characteristics of novel design, convenient operation, stable operation, safety and reliability, and convenient maintenance. It is used in various types of passenger ships, fishing boats, cargo ships, naval vessels, and offshore oil platforms.

The refrigeration unit can be designed according to the actual requirements of users and provide detailed technical solutions. Can provide temperature range -20 ~ 10 ℃; cooling capacity 10kw-1000kw.

   9. Low-temperature ethylene glycol, brine unit: The low-temperature chiller is a refrigeration equipment that provides low-temperature refrigerants. It is suitable for various occasions with medium and low-temperature cold sources, and is widely used as non-ferrous metallurgy, chemical industry and Cold source for production and processing of pharmaceutical intermediates, petrochemicals, grains and oils, beverages and foods, machinery, medicine, electronics, air separation, etc.

Low temperature chiller is a new generation of low temperature freezing equipment specially designed for the requirements of special industries. Its temperature range can be adjusted from 30 degrees to minus 60 degrees. The cooling range is 10--1000KW. Low-temperature chillers are divided into high, medium and low temperature water supply units according to the cooling range.

   1. Standard chiller: can provide 3 ～ 35 ℃ frozen water, or use ethylene glycol solution as the cooling agent, can provide -5 ～ + 5 ℃ process frozen aqueous solution, can be used as ice storage, low temperature air supply, central Process cold source required by air conditioners and other production processes. At the same time, the unit can be specially designed according to the requirements of the user, and a screw chiller with a large temperature difference can be provided.

   2. Medium temperature chiller: outlet temperature is -5 ℃ ～ -45 ℃, adopt imported semi-closed screw compressor unit (with economizer); can provide -5 ℃ ～ -45 ℃ low temperature glycol solution or saline solution. It can be used as a cold source for chemical, pharmaceutical, cold storage, ice rink and other processes.

   3. Low-temperature screw chiller: the outlet temperature is -45 ℃ ～ -110 ℃, and can provide -45 ℃ ～ -110 ℃ alcohol or dichloromethane solution chilled water. Using binary cascade or ternary cascade refrigeration system, the operation is stable and the energy efficiency ratio is high.

   10. Water ground source heat pump: The water ground source heat pump can be used for central heating and cooling in hotels, office buildings, schools, shopping mall villas, residential areas, and other commercial and industrial building air conditioners, and can be used in swimming pools, bath centers, beer In the industries of brewing, cold rolling and forging, cold storage, indoor planting and constant temperature breeding. One set of equipment can be used for cooling, heating, and domestic hot water. For the air conditioning system, one heat pump provides two heat sources, which can save one-time investment. Its total investment is only 60% of the traditional air conditioning system, and it is easy to install, the installation workload is less than other air conditioning systems, and the installation period is short. It is also easy to change the installation. Compared with conventional air conditioning technology, water source heat pump has the following advantages:

   1. High efficiency and energy saving

Water ground source heat pump is the cooling and heating method of energy efficiency ratio (COP value) in the current air conditioning system. The theoretical calculation can reach 7, and the actual operation is 4 to 6. The water ground source heat pump consumes 1kW.h of electricity, and the user can get 4.3 ～ 5.0kW.h of heat or 5.4 ～ 6.2kW.h of cold. Compared with the air source heat pump, its operating efficiency is 20 to 60% higher, and the operating cost is only 40 to 60% of the ordinary central air conditioner.

   2. Renewable energy utilization technology

Water ground source heat pump is a heating and air conditioning system that uses the solar energy resources stored in the earth's water body as cold and heat sources to perform energy conversion. The available water bodies include groundwater or rivers, some rivers, lakes, and oceans on the surface. Using surface water as the source of cold and heat, release heat or absorb heat to it without consuming water resources and causing pollution; save the boiler room and auxiliary coal yard, oil storage room, cooling tower and other facilities, the machine room is large It is smaller than conventional air-conditioning systems, saves building space, and is also conducive to building aesthetics. This makes it possible to use the nearly unlimited solar energy or ground energy stored therein. Therefore, the water source heat pump uses a technology of clean renewable energy, which has significant environmental benefits.

   3. Stable and reliable operation, easy maintenance

The temperature of the water body is relatively stable throughout the year, and its fluctuation range is much smaller than that of the air. The relatively constant temperature of the water body makes the heat pump unit operate reliably and stable, and also guarantees the efficiency and economy of the system; it is controlled by a full computer , High degree of automation. Due to the simple system, few components, and stable operation, the maintenance cost is low.

   11. Cold storage: including freezer, cold storage, quick-freezing cold storage, constant temperature cold storage, widely used in biological, industrial, military, food, aquatic, flower, animal husbandry and medicine, logistics, hotels, restaurants, food processing and other industries for the preservation and freezing storage of articles .

   12. High temperature drying heat pump is mainly used for wood drying, tobacco drying, bamboo product drying, tea drying, medicinal materials drying, fruit and vegetable drying, cured flavor drying, mushroom drying, sludge drying, industrial drying , Agricultural products drying and other occasions.

   13. Air energy heat pump

Air energy water heaters are used in domestic hot water fields such as family, villas, institutions, schools, hotels, community heating, etc. with their own advantages and good economic benefits; special heat pumps specially designed for special occasions are widely used in constant temperature swimming pools, aquaculture, High-temperature hot water in food plants, high-temperature hot water in slaughterhouses, high-temperature hot water in textile printing and dyeing plants, high-temperature hot water in electroplating plants, etc.

   14. Seafood, aquaculture

The traditional winter heating equipment in the aquaculture industry mainly uses boilers, coal, fuel oil, and electric heating. These heating equipment have many defects, such as too high energy consumption, extended breeding cycles, and difficult to accurately control the water temperature, which affects the breeding efficiency. The emission of harmful gases pollutes the environment, which requires manual management and other issues.

A new generation of cold and warm constant temperature breeding units developed and manufactured using the principle of air energy, using flexible scroll compressors, special titanium alloy corrosion-resistant heat exchangers, high efficiency, energy saving, safety and environmental protection, microcomputer controller automatic control, water temperature can be 8-30 according to need Adjust between degrees to control the water temperature in the range of plus or minus 1.5 degrees, without the need for dedicated personnel to manage and save trouble. Compared with the heating methods such as boiler, coal burning, fuel oil, electric heating, etc., constant temperature farming is not only more conducive to the growth of cultured animals, but also saves more than 50% of the annual cost. Operation, save time and worry.