CN201081472Y - Combined type multi-functional refrigerating unit - Google Patents

Abstract

The utility model relates to a combined type multifunctional refrigerating unit which comprises an electric control main station, a cooling tower, a refrigerating unit and a plurality of air coolers, wherein the inner part of the refrigerating unit is provided with a condenser, a compressor and an evaporator; the cooling tower is connected to the condenser through a cooling water pump; the evaporator is connected with a cold supply conduit and a cold return conduit; the cold supply conduit is connected with a cold water supply pump and then connected with a plurality of air coolers in order; a cold supply port of each air cooler is provided with an electromagnetic valve; the cold return ports of the air coolers are connected to the cold return conduit in order; the electromagnetic valves are respectively connected to the electric control main station through conducting wires; the cooling water pump is connected to an electric cabinet; the cold water supply pump is connected with a frequency conversion cabinet; the electric cabinet and the frequency conversion cabinet are connected with the electric control main station. The utility model only uses one heat expansion valve for one refrigerating unit, has short refrigeration system and high refrigerating efficiency and is convenient to adjust; glycol is used to supply cold and constant voltage is output after frequency conversion; according to the input cold flow, the cold supply system uses no expansion valve, has no block, needs no adjustment and is convenient to mount.

Description

Combined multifunctional refrigeration unit

technical field

The utility model relates to a refrigeration device, in particular to a combined multifunctional refrigeration unit.

Background technique

The existing refrigerating unit is composed of a condenser, a refrigerating compressor, a dry filter, a liquid receiver, a solenoid valve, a thermal expansion valve, an evaporator and an electric control system. The gas pipe is connected to the top air inlet of the condenser, the outlet of the condenser is connected to the inlet of the liquid receiver, the outlet of the liquid receiver is connected to the inlet of the dry filter, and the dry filter is connected to the inlet of the solenoid valve, and the solenoid The outlet of the valve is connected to the inlet of the electric expansion valve, the outlet of the thermal expansion valve is connected to the inlet of the evaporator, and the return pipe of the evaporator is connected to the return pipe of the refrigeration compressor. The compressor, the compressed refrigerant circulates to the condenser to dissipate heat, then to the liquid receiver, the liquid state and then to the thermal expansion valve of each cold storage, and starts to intercept, the refrigerant absorbs heat in the evaporator and changes from liquid to gas; the heat supply pipe goes to Each cold storage is connected to the expansion valve in the storage, and the liquid return pipe of the evaporator is installed on the return air pipe of the refrigeration compressor. Due to the operation of the refrigeration compressor, the refrigerant changes from liquid to gas cycle, absorbs heat and discharges heat, and compresses The purpose of refrigeration is achieved under the action of the principle; the power distribution system is composed of the main power distribution, the computer temperature controller, the cooling fan and the refrigeration compressor, and the power is supplied by the main power supply respectively. The computer temperature control box is composed of electronic comprehensive protector, AC contactor, electronic digital temperature controller and switch. The deep head sensor of the temperature sensor is placed in the cold storage, and the sensor is connected to the temperature controller. According to the need to control the temperature of the cold storage, there are two types of refrigeration, namely air cooling and water cooling. Air-cooling is that the compressor of the condenser compresses high-pressure and high-temperature gas. When it passes through the copper tube of the condenser, it is made of copper tube and aluminum sheet. Fluorine is carried in the copper tube. It is sealed inside a circular steel pipe. When the compressed high-temperature and high-pressure gas passes through the copper tube in the water-cooled condenser, it uses the flow of water to absorb heat in the water, and then uses the cooling tower to dissipate heat. The air cooler in the cold storage is an electric fan. Blow cold air to cool down the cold storage.

The traditional refrigeration unit is installed on the cold storage, which has many disadvantages. Generally, large-scale cold storages are composed of many cold storages. If there is one unit in each cold storage, the more cold storages there are, the more units will be needed, and the floor space will be large, which will affect the appearance of the entire cold storage. When the temperature is reached, the refrigeration unit stops running, which causes the refrigerator to be idle and cannot be fully utilized, resulting in a waste of resources. In addition, the cold storage adopts separate refrigeration. When one cold storage needs cooling, the units of other cold storage cannot assist in cooling, which also causes waste. At the same time, this cooling method has a large power supply capacity. With single-unit refrigeration in the computer room, each room needs a long system pipeline from the liquid supply to the gas return pipe. The pipeline is long, the refrigerant cycle is long, the refrigeration is slow, the use of fluorine is high, the refrigerant circulation resistance is large, and the refrigeration efficiency is low. Use a refrigeration unit to see the cooling fan of the cold storage, the distance between the unit and the cold storage is not equal, the supply pressure of the refrigerant is also different, the flow of the refrigerant is different, and the cooling capacity is also different. When the temperature of some cold storage reaches When traveling far away, keep its fixed electric power. The air cooler in the cold storage will stop in flat wind, and the temperature will be difficult to control. The refrigerant pressure of the refrigeration unit will be unstable when traveling far away, the cooling capacity will be inconsistent, and the current will fluctuate greatly, which will impact the compressor and the power grid. The refrigeration system is long, because fluorine is corrosive to metals, so it is necessary to clean the overflow net generated by thermal expansion after traveling for a period of time, otherwise blockage will occur. The air cooler does not refrigerate, and large-scale cold storage uses two types of electric defrosting: electric defrosting and water flushing. That is, electric heating tubes are added to the aluminum fins of the air cooler. When the fan fins are full of frost, the refrigeration unit stops and the condenser The axial flow fan of the machine also stops working, and the electric heating tube starts heating to melt the frost and then re-refrigerate. Water flushing frost refers to adding a drain pipe on the top of the water-cooled evaporator, and there is a water receiving pan under the air cooler. The water pump is used to flow water evenly downwards on the top pipe of the air cooler for frost flushing, and the water flows to the water receiving tray through the aluminum fins. There is a drain pipe on the water tray to flow to the pool to circulate frost. Both forms have their shortcomings. Electric defrosting, electric heating tubes and cooling pipes are used to heat the periphery of the cooling pipe to defrost, which consumes electricity. Disadvantages of running water outside the drip tray.

Utility model content

The purpose of the utility model is to provide a combined multifunctional refrigeration unit, which overcomes the disadvantages of uneven temperature control, low refrigeration efficiency, idle equipment and waste of resources in the existing refrigeration units.

The purpose of this utility model is to realize through the following technical solutions:

A combined multifunctional refrigerating unit, including an electric control console, a cooling tower, a refrigerating unit and a plurality of cooling fans, a condenser, a compressor and an evaporator are arranged inside the refrigerating unit, the condenser is connected to the compressor, and the compressor The cooling tower is connected to the condenser of the refrigeration unit through the cooling water pump, and the evaporator of the refrigeration unit is respectively connected to the cooling pipeline and the cooling pipeline, and the cooling pipeline is connected to the cooling water pump and then connected in sequence The cooling outlets of multiple air coolers are provided with solenoid valves, and the return cooling ports of the plurality of air coolers are connected to the return cooling pipelines in sequence; the electromagnetic valves are respectively connected to electric control console, the cooling water pump is connected to the electric cabinet through wires, the cooling water pump is connected to the frequency conversion cabinet through wires, the electric cabinet and the frequency conversion cabinet are connected to the electric control console through wires, and the electric control console is connected to the The cooling water pump is controlled by frequency conversion and constant pressure.

The beneficial effects of the combined multi-functional refrigeration unit described in the utility model are: one refrigeration unit only uses one thermal expansion valve, the refrigeration system is short, the refrigeration efficiency is high, and it is easy to adjust. Cooling capacity input, the cooling system does not need an expansion valve, no blockage and no adjustment, easy to install, the combined refrigeration unit has heat recovery, air-cooled and water-cooled dual-purpose ethylene glycol for cooling, adopts frequency conversion and constant pressure control, the unit and cooling All constant temperature automatic defrosting with ethylene glycol heating.

Description of drawings

The utility model will be described in further detail below according to the accompanying drawings and embodiments.

Fig. 1 is a schematic structural view of the combined multifunctional refrigeration unit described in the present invention.

In the picture:

1. Electric control console; 2. Cooling tower; 3. Refrigeration unit; 4. Air cooler; 5. Condenser; 6. Compressor; 7. Evaporator; 8. Cooling water pump; 9. Cooling water pump; 10. Cooling pipeline; 11. Return cooling pipeline; 12. Solenoid valve; 13. Electric cabinet; 14. Frequency conversion cabinet.

Detailed ways

As shown in Figure 1, the combined multifunctional refrigeration unit described in the utility model includes an electric control console 1, a cooling tower 2, a refrigeration unit 3 and a plurality of air coolers 4, and the refrigeration unit 3 is provided with a condenser 5, Compressor 6 and evaporator 7, the condenser 5 is connected with the compressor 6, the compressor 6 is connected with the evaporator 7, the cooling tower 2 is connected to the condenser 5 of the refrigeration unit 3 through the cooling water pump 8, the refrigeration unit 3 The evaporator 7 is respectively connected to the cooling pipeline 10 and the cooling pipeline 11, the cooling pipeline 10 is connected to the cooling water pump 9 and then connected to the cooling outlets of a plurality of air coolers 4, the cooling of the plurality of air coolers 4 A solenoid valve 12 is arranged on the port, and the return cooling ports of multiple air coolers 4 are connected to the return cooling pipeline 11 in sequence; the solenoid valves 12 are respectively connected to the electric control console 1 through wires, and the cooling water pump 8 is connected to the electric control console 1 through wires. Connected to the electric cabinet 13, the cooling water pump 9 is connected to the frequency conversion cabinet 14 through wires, the electric cabinet 13 and the frequency conversion cabinet 14 are connected to the electric control console 1 through wires, and the electric control console 1 is connected to the cooling water pump 8. Carry out frequency conversion and constant pressure control.

The purpose of this utility model is to change the deficiencies of a traditional refrigerating unit system. A refrigerating unit 3 is provided for heat recovery. The condensation form is firstly air-cooled and then water-cooled. A shell-type evaporator 7 is used, and the cooling water pump 9 supplies the secondary Alcohol for cooling. The power supply is the power, fluorine is the refrigerant, ethylene glycol is the secondary refrigerant, and the cooling water pump 9 of the electronic part is equipped with frequency conversion and constant pressure control to control the cooling flow. Each air cooler 4 is equipped with a solenoid valve 12 to control the flow of ethylene glycol at any time , Each cold storage is equipped with an electronic temperature controller, which can set the desired temperature arbitrarily. Through the sensor in the cold storage, it is transmitted to the thermostat, and the thermostat controls the solenoid valve 12. When the temperature of the cold storage reaches the requirement, the solenoid valve 12 is controlled by the thermostat to close the ethylene glycol, the cold storage stops cooling, and the cold storage goes online according to the set temperature. Automatically open solenoid valve 12 to refrigerate. The constant temperature is automatically controlled. Its refrigeration principle is that the high-pressure gas compressed by the compressor 6 first recovers the heat, and the copper tube is installed in the container of the iron shell. When the cooling temperature of the condenser 5 is high, it will be water-cooled, and the condenser 5 will be cooled again with water to achieve the effect of complete cooling, and the steam refrigerant will reach the liquid, reach the filter and then enter the thermal expansion valve to throttle to the shell evaporator 7 for refrigeration ; Ethylene glycol in the evaporator 7 inner copper tube cooling shell absorbs cold and transports to the air cooler 4, and cools down in the cold storage. Its advantage is that one refrigerating unit 3 can support multiple cooling fans 4 to give full play to its refrigerating function, and it can also support multiple cold stores with one unit for rapid cooling during cooling, and the units can be connected to the pipeline. According to the heat capacity of the cold storage, the number of units can be equipped, which can not only provide cooling for a single machine but also be used in parallel to achieve the purpose of energy saving. The refrigerating system of the refrigerating unit has fast cooling speed and few failures. Each refrigerating unit has only one thermal expansion valve. The refrigerant is easy to adjust as the heat is throttled. When the ethylene glycol reaches the set temperature, the refrigerating unit will automatically stop.

Claims (1)

1. multifunctional assembled refrigeration unit, comprise automatically controlled total platform (1), cooling tower (2), refrigeration unit (3) and a plurality of air-cooler (4), it is characterized in that: refrigeration unit (3) inside is provided with condenser (5), compressor (6) and evaporimeter (7), described condenser (5) is connected with compressor (6), compressor (6) is connected with evaporimeter (7), described cooling tower (2) is connected to the condenser (5) of refrigeration unit (3) by cooling water pump (8), the evaporimeter (7) of refrigeration unit (3) connects cooling pipeline (10) respectively and returns cold pipeline (11), the cooling mouth that connects a plurality of air-coolers (4) behind described cooling pipeline (10) the last connection cooling water pump (9) in turn, the cooling mouth of a plurality of air-coolers (4) is provided with magnetic valve (12), and the cold mouth that returns of a plurality of air-coolers (4) is connected to described time cold pipeline (11) in turn; Described magnetic valve (12) is wired to automatically controlled total platform (1) respectively, described cooling water pump (8) is wired to electric cabinet (13), described cooling water pump (9) is wired to frequency conversion tank (14), and described electric cabinet (13) and frequency conversion tank (14) are wired to automatically controlled total platform (1).

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