CN-224218719-U - Cooling pipeline structure of frequency converter of air suspension centrifugal water chilling unit

Abstract

The utility model discloses a cooling pipeline structure of a frequency converter of a gas suspension centrifugal water chilling unit, which belongs to the technical field of refrigeration equipment and comprises a condenser, wherein an economizer is communicated with the condenser, an evaporator is communicated with the economizer, a compressor is communicated with the evaporator, the compressor is communicated with the condenser to form a refrigeration cycle loop, the frequency converter is provided with a cooling branch, the cooling branch comprises a first pipeline and a second pipeline, one end of the first pipeline is communicated with the condenser, one end of the first pipeline, which is far away from the condenser, is communicated with the frequency converter, one end of the second pipeline is communicated with the frequency converter, and one end of the second pipeline, which is far away from the frequency converter, is communicated with the evaporator, so that the frequency converter is cooled. The utility model improves the heat dissipation efficiency of the frequency converter, ensures the stable operation of the frequency converter under various working conditions, optimizes the layout and the structure of the cooling pipeline, reduces the occupied space, improves the integration level of the water chilling unit, and reduces the energy consumption and the maintenance cost of the cooling system.

Inventors

• Yin Mengcong
• WANG YAN
• ZHANG RUI
• Li Angheng

Assignees

• 维克（天津）有限公司

Dates

Publication Date

20260508

Application Date

20250527

Claims (10)

1. 1. The frequency converter cooling pipeline structure of the air suspension centrifugal chiller is characterized by comprising a condenser, wherein an economizer is communicated with the condenser, an evaporator is communicated with the economizer, a compressor is communicated with the evaporator, and the compressor is communicated with the condenser to form a refrigeration cycle loop; Still include the converter, be provided with the cooling branch road on the converter, the cooling branch road includes first pipeline and second pipeline, the one end and the condenser intercommunication of first pipeline, the one end and the converter intercommunication of condenser are kept away from to first pipeline, the one end and the converter intercommunication of second pipeline, the one end and the evaporator intercommunication of converter are kept away from to the second pipeline to cool off the converter.
2. 2. The structure of claim 1, wherein a drying filter tank is disposed on the first pipeline to ensure purity and stability of the refrigerant in the cooling branch.
3. 3. The structure of claim 2, wherein the first pipeline is provided with a solenoid valve, the solenoid valve is located downstream of the drying filter vat, and the solenoid valve controls the flow of refrigerant in the cooling branch.
4. 4. The structure of the cooling pipeline of the frequency converter of the air suspension centrifugal chiller according to claim 3 wherein the first pipeline is provided with an electronic expansion valve, the electronic expansion valve is positioned downstream of the electromagnetic valve, so as to precisely control the flow of the refrigerant of the cooling branch in cooperation with the electromagnetic valve.
5. 5. The structure of claim 4, wherein a sight glass is disposed on the first pipe, and the sight glass is positioned downstream of the electromagnetic expansion valve to observe the refrigerant in the cooling pipe.
6. 6. The cooling pipeline structure of the frequency converter of the air suspension centrifugal chiller according to claim 1, wherein a first stop valve is arranged at one end, close to the condenser, of the first pipeline, and a second stop valve is arranged at one end, close to the frequency converter, of the first pipeline.
7. 7. The cooling pipeline structure of the frequency converter of the air suspension centrifugal chiller according to claim 1, wherein a third stop valve is arranged at one end, close to the frequency converter, of the second pipeline, and a fourth stop valve is arranged at one end, close to the evaporator, of the second pipeline.
8. 8. The cooling pipeline structure of the frequency converter of the air suspension centrifugal chiller according to claim 1 wherein a cooling circuit for circulating a refrigerant is arranged on the housing of the frequency converter, and the cooling circuit is positioned on the housing at a position close to a heat dissipation module of the frequency converter.
9. 9. The cooling pipeline structure of the frequency converter of the air suspension centrifugal chiller according to claim 8 wherein the cooling circuits are arranged in an S-shaped circuit.
10. 10. The cooling pipeline structure of the frequency converter of the air suspension centrifugal chiller according to claim 9 wherein heat dissipation fins are densely arranged in the pipeline of the cooling circuit.

Description

Cooling pipeline structure of frequency converter of air suspension centrifugal water chilling unit Technical Field The utility model belongs to the technical field of refrigeration equipment, and particularly relates to a frequency converter cooling pipeline structure of a gas suspension centrifugal water chilling unit. Background At present, the frequency converter is used as one of core components of the air suspension centrifugal water chilling unit, and the function of the frequency converter is to adjust the rotating speed of the compressor by changing the frequency of a power supply, so that the accurate control of the refrigerating capacity is realized. The accurate control mode enables the water chilling unit to flexibly adjust the refrigerating capacity according to the change of the actual load, improves the energy utilization efficiency and reduces the operation cost. However, the frequency converter can generate a large amount of heat in the working process, and if the heat cannot be timely emitted, the temperature of the frequency converter can be increased, the performance and the service life of the frequency converter are affected, and even faults are caused. Therefore, effective cooling measures are critical for the proper operation of the frequency converter. The cooling mode of the frequency converter of the early gas suspension centrifugal chiller is mostly used for referencing the cooling method of the traditional industrial equipment, such as air cooling, natural cooling and the like. The air cooling is simple in structure and low in cost, but the cooling efficiency is relatively low, and particularly under the condition that the environment temperature is high or the load of the frequency converter is high, the heat dissipation requirement of the frequency converter is difficult to meet, and in addition, the air cooling also needs to be provided with equipment such as a fan and the like, so that certain noise can be generated, and the working environment is influenced. Therefore, it is needed to design a cooling pipeline structure of the frequency converter of the air suspension centrifugal chiller, so as to solve the problem of poor heat dissipation of the frequency converter. Disclosure of utility model In order to solve the technical problem of poor heat dissipation of the frequency converter mentioned in the background art, a cooling pipeline structure of the frequency converter of the air suspension centrifugal water chilling unit is provided to solve the problem. In order to achieve the above purpose, the specific technical scheme of the frequency converter cooling pipeline structure of the air suspension centrifugal chiller is as follows: The utility model provides a gas suspension centrifugal chiller converter cooling pipeline structure, includes the condenser, has the economic ware on the condenser intercommunication, has the evaporimeter on the economic ware intercommunication, has the compressor on the evaporimeter intercommunication, and the compressor communicates with the condenser, forms refrigeration cycle bad return circuit; Still include the converter, be provided with the cooling branch road on the converter, the cooling branch road includes first pipeline and second pipeline, the one end and the condenser intercommunication of first pipeline, the one end and the converter intercommunication of condenser are kept away from to first pipeline, the one end and the converter intercommunication of second pipeline, the one end and the evaporator intercommunication of converter are kept away from to the second pipeline to cool off the converter. Further, a drying filter drum is arranged on the first pipeline to ensure the purity and stability of the refrigerant in the cooling branch. Further, a solenoid valve is arranged on the first pipeline and is positioned at the downstream of the drying filter drum, and the solenoid valve controls the flow of the refrigerant of the cooling branch. Further, an electronic expansion valve is arranged on the first pipeline and is positioned at the downstream of the electromagnetic valve, so that the flow of the refrigerant of the cooling branch is accurately controlled by matching with the electromagnetic valve. Further, a sight glass is provided on the first line downstream of the electromagnetic expansion valve to observe the refrigerant in the cooling line. Further, one end of the first pipeline, which is close to the condenser, is provided with a first stop valve, and one end of the first pipeline, which is close to the frequency converter, is provided with a second stop valve. Further, one end of the second pipeline, which is close to the frequency converter, is provided with a third stop valve, and one end of the second pipeline, which is close to the evaporator, is provided with a fourth stop valve. Further, a cooling loop for circulating refrigerant is arranged on the outer shell of the frequency converter, and the cooling loop i