Negative pressure type automatic defrosting system and method

A negative pressure, automatic technology, applied in the field of automatic cold storage defrosting equipment, can solve the problems of high energy consumption of periodic automatic defrosting, complex structure of defrosting system, imperfect technology for determining the starting point of defrosting process, etc.

Active Publication Date: 2020-03-27
EBARA DENSAN QINGDAO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the existing technology, and to design a negative pressure automatic defrosting system

Method used

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  • Negative pressure type automatic defrosting system and method
  • Negative pressure type automatic defrosting system and method
  • Negative pressure type automatic defrosting system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] The negative pressure automatic frosting system involved in this embodiment has a main structure including a controller 1, a compressor 2, a blower evaporator 3, a wind pressure sensor 4, a defrosting device 5, and a temperature sensor 6; There is an equipment controller structure. The controller 1 is installed outside the cold storage. The controller 1 is connected to the compressor 2, the air supply evaporator 3, the air pressure sensor 4 and the temperature sensor 6 for electrical information, and the air pressure sensor 4 is fixedly installed in the In the housing of the wind type evaporator 3, the wind pressure sensor 4 is used to detect the wind pressure value in the blower type evaporator 3; the controller 1 is electrically connected to the defrosting device 5, and the controller 1 is electrically connected to the power supply to defrost The device 5 uses the existing defrosting equipment, and the operation of the entire system is automatically controlled by the co...

Embodiment 3

[0104] A specific automatic frosting method using the negative pressure automatic frosting system described in Example 1 is:

[0105] (1) Press the start key 27 to start the controller 1, press the set key 18 to enter the parameter setting module 12, enter the four-digit password or the initial password 9999 to log in to the parameter setting interface, set the parameters of the automatic frost mode, and the defrost cycle Set to 48 hours, set the defrost air volume to 70Kpa, set the defrost time to 30 minutes, set the defrost stop temperature to 0℃, set the defrost delay to 1 minute, and set the delay after defrost to 5 minutes, the evaporator delay is set to 1 minute, the compressor delay is set to 1 minute, the power-off delay is set to 1 minute, the sensor interruption time is set to 10 seconds, and the amount of frost is set to 30% , The temperature interval value is 4℃ and the temperature rise value is 2℃, and the set parameters are sent to the automatic operation module 13;...

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Abstract

The invention belongs to the technical field of automatic cold storage defrosting equipment, and relates to a negative pressure type automatic defrosting system and method. The system comprises a controller, a compressor, an air supply type evaporator, an air pressure sensor, a defrosting device and a temperature sensor, wherein the air supply type evaporator comprises the air pressure sensor, anevaporator coil, a housing, fans and a fixing block; the evaporator coil is fixed at the open end of the open housing; the two fans are symmetrically arranged at the rear end of the housing; the fixing block is arranged between the two fans; the front end surface of the fixing block and the front end surfaces of the fans are positioned on the same vertical end surface; the rear end of the fixing block is fixedly connected with the housing; and the front end surface of the fixing block is fixedly connected with the air pressure sensor. According to the system, the frosting amount of the evaporator can be intelligently detected, the optimal defrosting opportunity is automatically determined, the energy-saving purpose of optimizing cold storage resources is achieved, meanwhile, the termination of the defrosting operation is determined according to the temperature change amount or the set defrosting time, the quality of stored objects is improved, and the loss rate is reduced.

Description

Technical field: [0001] The invention belongs to the technical field of automatic cold storage defrosting equipment, and relates to a cold storage defrosting system and method that uses negative pressure to determine the frosting rate of a cold storage to realize automatic defrosting, in particular to a negative pressure type automatic defrosting system and method. Background technique: [0002] With the rapid development of the field of refrigeration equipment, the automation of cold storage refrigeration systems has become an essential function of today’s cold storage production management. The realization of automation has effectively increased the safety, reliability and energy saving of the refrigeration system Good quality is guaranteed; however, the surface of the evaporator in the cold storage is frosted, which hinders the conduction and dissipation of the cold capacity of the refrigeration evaporator (pipe), and ultimately affects the cooling effect. When the thickness o...

Claims

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Application Information

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IPC IPC(8): F25D21/06F25D29/00
CPCF25D21/008F25D21/06F25D29/008F25D2400/361
Inventor 李彦苗笛王磊刘辉辉仲崇庆孙茂虎袁优张磊
Owner EBARA DENSAN QINGDAO TECH
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