Industrial chiller four components and technical principles

The chiller is applied to the cooling of plastic processing machinery forming molds, which can greatly improve the surface finish of plastic products, reduce the surface marks and internal stress of plastic products, so that the products do not shrink or deform, facilitate the demoulding of plastic products, accelerate the product stereotype, and thus The earth improves the production efficiency of plastic molding machines. The chiller is used in CNC machine tools, coordinate boring machines, grinding machines, machining centers, combination machine tools, and various types of precision machine tool spindle lubrication and hydraulic system transmission medium cooling, which can accurately control the oil temperature, effectively reduce the thermal deformation of the machine tool, and improve the machine tool. Precision. Industrial chillers are typically used as closed-loop systems for complete packaging, including hot and cold water units, condensers and circulating pump pumps, expansion valves, no-flow shut-off, internal cold water tanks, and temperature control stations.

Introduction of four components of industrial chiller:

1. Compressor
The function of the refrigeration compressor is to draw the refrigerant vapor in the evaporator and compress it to the condensing pressure, and then discharge it to the condenser. The commonly used compressors are piston type, centrifugal type, screw type, rolling rotor and sliding type. Wait. The Dongyue enters the piston type compressor for the sealed chiller, and the screw type chiller uses the screw type compressor.

2, the condenser
The function of the condenser is to condense the high temperature refrigerant vapor from the compressor into a liquid. During the condensation process, the refrigerant vapor releases heat, so it needs to be cooled by water or air. At present, the evaporator used by Nanjing Dechang Machinery is manufactured by a company specializing in the production of pressure vessels. It is safe, has a pressure vessel certificate, has good sealing performance, strong heat exchange capacity, and is easy to clean and maintain. More commonly used shell-and-tube condensers, finned condensers.

3, throttling equipment
The function of the throttling mechanism is to cause the pressure of the refrigerant liquid to flow through the throttling mechanism, the pressure is reduced from the condensing pressure to the evaporating pressure, and a portion of the liquid is converted into a vapor. Commonly used throttling mechanisms include capillary tubes, manual throttle valves, thermal expansion valves, float ball regulating valves, etc. Capillaries do not have an adjustment function, and the other three throttle valves regulate the flow of refrigerant into the chiller evaporator to accommodate refrigeration. The change in load, so as to achieve the purpose of adjusting the cooling capacity.

4, evaporator
The function of the evaporator is to evaporate the refrigerant liquid into a vapor to absorb the heat of the object being cooled. The evaporator is a device that outputs cold output. The output of the cold can cool the liquid refrigerant or directly cool the air. It has the choice of single circuit, double circuit and three circuit. The heat exchange range is 7112Kcal/h~1330560Kcal/h. It is manufactured by the company's precision CNC and its technical indicators have reached the international advanced level.

Introduction to the principle of four components of industrial chiller:

1. Evaporator: Everyone knows that evaporation needs to absorb heat. What is the heat that the industrial chiller absorbs in the physical process of evaporation? Since it is called a chiller, it is of course the heat that absorbs water. In the specific operation, the evaporator is made into a circle with a copper tube and a standard water tank, and the coil is fixed in the water tank, so that the refrigerant R22 in the copper tube can absorb heat. The heat of the water. At this point, the temperature sensor is placed in the water tank, and the temperature of the water in the water tank can be detected by the temperature display function on the PLC circuit board. This type of evaporator is generally referred to as a water tank coil type evaporator, and is mainly used for a water-cooled box type chiller and an air-cooled box type chiller.

2. Condenser: The effect of the condenser is exactly the opposite of that of the evaporator. It is to return the refrigerant R22 back to the liquid state and supply the liquid R22 to the evaporator. In the working process of the compressor, we all know that high pressure and low pressure will occur, and the high pressure R22 will evaporate, then the low pressure R22 will condense. The condenser is such a device, its main purpose is to let the refrigerant R22 dissipate the absorbed heat. In reality, there are two methods, one is to use the special fan of the chiller to dissipate heat, and the other is to use the cooling tower. Perform circulating heat dissipation. The fan that uses the fan to dissipate heat is called the air-cooled box chiller. The fan is placed near the copper pipe. After the fan is blown against the copper pipe, the heat absorbed by the R22 in the copper pipe will be lost in the air. The cooling water tower is called a water-cooled chiller, which uses a constant water that is not supplied from the source to the shell-and-tube condenser. This shell-and-tube condenser is a simple heat exchanger. Take R22, you can walk the water, there is a junction surface, in this case, the water can take away the heat of R22 to achieve the effect of R22 condensation.

3. Compressor: The compressor is the core component of the entire refrigeration system and the source of refrigerant compression. Its function is to convert the input electrical energy into mechanical energy to compress the refrigerant.

4. Expansion valve: The expansion valve is both a flow regulating valve in the chiller refrigeration system and a throttle valve in the refrigeration device. It is installed between the drying filter and the evaporator in the refrigeration device, and its temperature sensing package It is wrapped at the exit of the evaporator. Its main function is to reduce the pressure of the high-pressure normal temperature refrigerant liquid when flowing through the thermal expansion valve, and become the low-temperature low-pressure refrigerant wet steam entering the evaporator, vaporizing and absorbing heat in the evaporator, and achieving the purpose of cooling and cooling.

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4 .0.22 um and 0.45 um for choices

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Brief of Membrane

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