阅读说明：本技术 一种应用于大功率电气设备降温的双冷源制冷机组 (Double-cold-source refrigerating unit applied to cooling of high-power electrical equipment ) 是由 陈贺伟 黄双全 周卓栋 李学军 曾芳 于 2021-07-27 设计创作，主要内容包括：一种应用于大功率电气设备降温的双冷源制冷机组,包括机体,所述机体上设有进风口和出风口,机体设有进水管和出水管,机体内设有制冷系统、冷却盘管和风机,所述制冷系统包括依次连接的压缩机、冷凝器、节流阀和蒸发器,所述进水管与出水管均通过三通阀与冷凝器和冷却盘管连接。本发明制冷效果好,能有效解决变频器等其他大功率电气设备车间室内温度过高,粉尘含量过高等问题,降低空调耗电量。(The utility model provides a be applied to two cold source refrigerating unit of high-power electrical equipment cooling, includes the organism, be equipped with air intake and air outlet on the organism, the organism is equipped with inlet tube and outlet pipe, is equipped with refrigerating system, cooling coil and fan in the organism, refrigerating system is including compressor, condenser, choke valve and the evaporimeter that connects gradually, the inlet tube all is connected with condenser and cooling coil through the three-way valve with the outlet pipe. The invention has good refrigeration effect, can effectively solve the problems of overhigh indoor temperature, overhigh dust content and the like of workshops of other high-power electrical equipment such as a frequency converter and the like, and reduces the power consumption of an air conditioner.)

1. The utility model provides a be applied to two cold source refrigerating unit of high-power electrical equipment cooling, includes the organism, be equipped with air intake and air outlet on the organism, its characterized in that: the organism is equipped with inlet tube and outlet pipe, is equipped with refrigerating system, cooling coil and fan in the organism, refrigerating system is including the compressor, condenser, choke valve and the evaporimeter that connect gradually, the inlet tube all is connected with condenser and cooling coil through the three-way valve with the outlet pipe.

2. The dual cold source refrigerating unit applied to cooling of high-power electrical equipment according to claim 1, wherein: be equipped with first temperature sensor on the inlet tube, the air intake department of organism is equipped with second temperature sensor, and the air outlet department of organism is equipped with third temperature sensor.

3. The dual cold source refrigerating unit applied to cooling of high-power electrical equipment according to claim 2, wherein: and a PLC control cabinet is arranged on the machine body and used for controlling the three-way valve and the temperature sensor.

4. The double cold source refrigerating unit applied to cooling of high-power electrical equipment according to any one of claims 1 to 3, wherein: the air outlet is positioned at the outlet of the fan, and the fan is used for blowing out cold air in the machine body.

5. The double cold source refrigerating unit applied to cooling of high-power electrical equipment according to any one of claims 1 to 3, wherein: the air inlet is connected with an exhaust pipe of a device needing cooling.

Technical Field

The invention relates to refrigeration equipment, in particular to a double-cold-source refrigerating unit applied to cooling of high-power electrical equipment.

Background

At present, in view of energy conservation in operation and carbon emission reduction, high-power electrical equipment (such as a frequency converter) is widely used in various industries, but because the frequency converter has large heat productivity and has higher requirements on the environment, a ventilation or air-cooling cold air type air conditioner cooling mode is generally adopted for solving the heat dissipation problem at present. The common ventilation cooling easily causes the dust content in the indoor environment to be too high and the indoor temperature requirement cannot be met in hot seasons, and influences the operation of a frequency converter or other electrical equipment; the adoption of the air conditioner for cooling directly leads to the increase of the power consumption, which runs counter to the original intention of increasing the frequency converter.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects in the prior art and provide the double-cold-source refrigerating unit which meets the requirements of indoor temperature and humidity and air quality and is low in comprehensive energy consumption and applied to cooling high-power electrical equipment such as a frequency converter.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a be applied to two cold source refrigerating unit of high-power electrical equipment cooling, includes the organism, be equipped with air intake and air outlet on the organism, its characterized in that: the organism is equipped with inlet tube and outlet pipe, is equipped with refrigerating system, cooling coil and fan in the organism, refrigerating system is including the compressor, condenser, choke valve and the evaporimeter that connect gradually, inlet tube and first three-way valve are connected, and two other ports of first three-way valve are connected with condenser and cooling coil respectively, outlet pipe and second three-way valve are connected, and two other ports of second three-way valve are connected with condenser and cooling coil respectively.

Preferably, the cooling coil is composed of a copper tube and an aluminum fin.

Further, be equipped with first temperature sensor on the inlet tube, the air intake department of organism is equipped with second temperature sensor, and the air outlet department of organism is equipped with third temperature sensor.

Furthermore, a PLC control cabinet is arranged on the machine body and used for controlling the three-way valve and the temperature sensor.

Further, the air outlet is located at the fan, and the fan is used for blowing out cold air in the machine body.

Furthermore, the air inlet is connected with a hot air exhaust pipe of the equipment needing cooling.

Furthermore, a filter screen is arranged at the air inlet. Impurities such as dust can be prevented from entering the machine body and affecting the operation of the machine body.

The invention has good refrigeration effect, can effectively solve the problems of overhigh indoor temperature, overhigh dust content and the like of other high-power electric workshops such as a frequency converter and the like, and reduces the power consumption of an air conditioner.

Drawings

FIG. 1 is a schematic diagram of a refrigeration unit according to an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating an operation condition according to an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the figures and the embodiments.

As shown in fig. 1-2, the present embodiment includes a housing, a refrigeration system 1, a cooling coil 2 and a fan 3 are disposed in the housing, an air inlet 4 is located at an upper end of the housing, and an air outlet 5 is located at a lower side wall of the housing and is close to an air outlet of the fan 3. The refrigeration system 1 includes a compressor 101, a condenser 102, a throttle valve 103, and an evaporator 104 connected in this order. Be equipped with inlet tube 6 and outlet pipe 7 on the organism 1, inlet tube 6 is connected with first three-way valve 8, and two other ports of first three-way valve 8 are connected with condenser 102 and cooling coil 2 respectively, and outlet pipe 7 is connected with second three-way valve 801, and two other ports of second three-way valve 801 are connected with condenser 102 and cooling coil 2 respectively.

The refrigeration system 1 adopts an environment-friendly refrigerant, the refrigerant respectively passes through the compressor 101, the condenser 102 and the throttle valve 103 and then enters the evaporator 104, and the heat of the hot air flowing through the evaporator 104 is absorbed to realize refrigeration cycle.

The three-way valve 8 sends the cooling water to the condenser 102 or the cooling coil 2 of the refrigeration system 1 through a switching line.

Be equipped with first temperature sensor 9 on inlet tube 6, 4 departments of the air intake of organism 1 are equipped with second temperature sensor 12, and 5 departments of the air outlet of organism 1 are equipped with third temperature sensor 13, and first temperature sensor 9 is used for monitoring the temperature of intaking, and second temperature sensor 12 is used for monitoring the air inlet temperature, and third temperature sensor 13 is used for monitoring the air-out temperature. The first temperature sensor 9, the second temperature sensor 12 and the third temperature sensor 13 are all provided with temperature transmitters with sensing functions, data can be led into the PLC control cabinet 10, and the PLC control cabinet can also be connected to a plant decentralized control system, so that remote control over the three-way valve and the refrigeration cycle is realized.

The PLC control cabinet 10 is provided with a state display screen 14 for displaying the refrigeration mode, the inlet air temperature, the supply air temperature, the inlet water temperature and the state of the filter screen. The cooling mode is displayed for two states of cooling and cooling.

The hot air coming out of the room or the equipment enters the double-cold-source refrigeration equipment unit through the air inlet 4 and the filter screen 11, sequentially passes through the evaporator 101 and the cooling coil 2 of the refrigeration system 1, and then is sent into the room through the fan.

The refrigeration system 1 and the cooling coil 2 do not operate at the same time, and the operation conditions are manually or interlockingly switched through the control (display) panel 14 according to the feedback of the first temperature sensor 9 and the third temperature sensor 13.

The two operating conditions are as follows:

(1) and switching the operation condition to refrigeration: when the cooling water flows through first three-way valve 8, control through PLC switch board 10, it is higher to judge the cooling water temperature this moment, unsatisfied air supply temperature requirement, control first three-way valve 8 and insert refrigerating system 1 with the cooling water, the cooling water heats up (absorbs the refrigerant heat) through the condenser 102 heat absorption of refrigerating system 1, hot-blast evaporimeter 104 cooling (release heat gives the refrigerant) through refrigerating system 1, send into indoorly through fan 3, the cooling water after the heat transfer flows from outlet pipe 7, form the circulation, cooling coil 2 is out of work under this operating mode.

(2) And switching the operation condition to cooling: when the cooling water flows through first three-way valve 8, through the control of PLC switch board 10, it is lower to judge the cooling water temperature this moment, satisfies the air supply temperature requirement, and the cooling water gets into cooling coil 2 through first three-way valve 8, and it is cold-colored through cooling coil 2 cooling, send into indoorly through fan 3, and the cooling water after the heat transfer flows from outlet pipe 7, forms the circulation, and refrigerating system 1 is out of work under this operating mode.

In winter or transition season, the cooling working condition is preferentially operated, the refrigerating system 1 is not operated, and the hot air is cooled by the low-temperature cooling water flowing through the cooling coil 2.

When the system monitors that the temperature of the third temperature sensor 13 exceeds 35 ℃, the operation mode is switched to refrigeration, the refrigeration system 1 operates, cooling water flows to a condenser of the refrigeration system 1 through the first three-way valve 8 and does not pass through the cooling coil 2 any more, and hot air is cooled by the evaporator 104 of the refrigeration system 1.

The quality of the engineering cooling water meets the requirement of the professional cooling water quality specification of the air conditioner.

Various modifications and variations of the present invention may be made by those skilled in the art, and they are also within the scope of the present invention provided they are within the scope of the claims of the present invention and their equivalents.

What is not described in detail in the specification is prior art that is well known to those skilled in the art.