Water Chiller for Cooling the Mixing Tank

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Chiller for cooling the mixing tank is one of the chiller models. It cools normal temperature water to a certain temperature through the compressor of the chiller to strengthen the cooling of the mold or machine. It is used as a stand-alone machine. The heat dissipation device is a built-in fan. There are three main Interconnected systems: refrigerant circulation system, water circulation system, electrical automatic control system.

The chiller is a kind of water cooling equipment that can provide constant temperature, constant flow and constant pressure cooling water equipment. Its working principle is to first inject a certain amount of water into the water tank inside the machine, cool the water through the refrigeration system, and then send the low-temperature cooling water to the equipment that needs to be cooled by the water pump. After the chilled water takes away the heat, the temperature rises and then flows back to the water tank. , to achieve cooling effect. The cooling water temperature can be automatically adjusted according to requirements, which can save water for long-term use.

The basic composition of chiller for cooling the mixing tank:

Condenser: During the refrigeration process, the condenser plays the role of outputting heat energy and condensing the refrigerant. After the high-pressure superheated steam discharged from the refrigeration compressor enters the condenser, all the heat absorbed during the working process, including the heat absorbed from the evaporator and refrigeration compressor and in the pipeline, is transferred to the surrounding medium (water or air) is taken away; the high-pressure superheated vapor of the refrigerant condenses back into liquid. (According to different cooling media and cooling methods, condensers can be divided into three categories: water-cooled condensers, air-cooled condensers, and evaporative condensers.)

Liquid receiver: The liquid receiver is installed after the condenser and is directly connected to the drain pipe of the condenser. The refrigerant liquid of the condenser should flow into the liquid receiver unobstructed, so that the cooling area of the condenser can be fully utilized. On the other hand, when the heat load of the evaporator changes, the demand for refrigerant liquid also changes. At that time, the liquid receiver plays the role of adjusting and storing refrigerant. For small chiller refrigeration equipment systems, liquid receivers are often not installed, but condensers are used to adjust and store refrigerant.

Drying filter: In the refrigeration cycle of the chiller, moisture and dirt (oil, iron filings, copper filings) must be prevented from entering. The main source of moisture is the trace moisture contained in the newly added refrigerant and lubricating oil, or due to Moisture brought by air entering during system maintenance. If the water in the system is not completely removed, when the refrigerant passes through the throttle valve (thermal expansion valve or capillary tube), the water will sometimes solidify into ice due to the drop in pressure and temperature, blocking the passage and affecting the normal operation of the refrigeration device. Therefore, a filter drier must be installed in the chiller refrigeration system.

Evaporator: The evaporator is a heat exchange device that relies on the evaporation of refrigerant liquid to absorb the heat of the cooled medium. Its function in a refrigeration system is to absorb heat. In order for the evaporation process to proceed stably and lastingly, the evaporated gas must be continuously pumped away by a refrigeration compressor to maintain a certain evaporation pressure.

Thermal expansion valve: The thermal expansion valve is not only a flow regulating valve in the chiller refrigeration system, but also a throttle valve in the refrigeration equipment. It is installed between the drying filter and the evaporator in the refrigeration equipment. Its temperature sensing package It is wrapped at the outlet of the evaporator. Its main function is to throttle and reduce the pressure of the high-pressure and normal-temperature refrigerant liquid when flowing through the thermal expansion valve, turning it into low-temperature and low-temperature refrigerant wet vapor (mostly liquid, a small part is steam), entering the evaporator, and vaporizing in the evaporator. Absorb heat to achieve the purpose of cooling.

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