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CN-122028368-A - Intermittent working load heat dissipation system

CN122028368ACN 122028368 ACN122028368 ACN 122028368ACN-122028368-A

Abstract

The application relates to an intermittent working load heat dissipation system, which relates to the field of refrigeration and heat dissipation and comprises a liquid storage device, a compressor, a condenser, an expansion valve, a cold accumulator, a circulating pump and a load heat exchanger, wherein the liquid storage device, the compressor, the condenser, the expansion valve and the cold accumulator are sequentially connected to form refrigeration circulation, the liquid storage device, the circulating pump, the load heat exchanger and the cold accumulator are sequentially connected to form heat dissipation circulation, a refrigerant is stored in the liquid storage device, and a phase change cold storage agent is stored in the cold accumulator, so that the maximum refrigeration power of the heat dissipation system can be reduced, the energy utilization rate can be improved, and the production and use cost of the heat dissipation system can be reduced.

Inventors

  • ZHANG QIUMEI
  • WANG XIANZHOU
  • XU DEHAO
  • LOU KAISHENG
  • XU RUI

Assignees

  • 南京艾科美热能科技有限公司

Dates

Publication Date
20260512
Application Date
20260228

Claims (9)

  1. 1. The utility model provides an intermittent type work load cooling system, its characterized in that includes reservoir (1), compressor (2), condenser (3), expansion valve (4), regenerator (5), circulating pump (6) and load heat exchanger (7), reservoir (1), compressor (2), condenser (3), expansion valve (4) and regenerator (5) connect gradually, form refrigeration cycle, reservoir (1), circulating pump (6), load heat exchanger (7) and regenerator (5) connect gradually, form heat dissipation cycle, store the refrigerant in reservoir (1), store phase transition cold-storage agent in regenerator (5).
  2. 2. Intermittent work load heat dissipation system according to claim 1, characterized in that the reservoir (1) comprises a refrigerant inlet (11), a liquid refrigerant outlet (12) and a gaseous refrigerant outlet (13), the liquid refrigerant outlet (12) being arranged in the lower part of the reservoir (1), the gaseous refrigerant outlet (13) being arranged in the top part of the reservoir (1), the refrigerant inlet (11) being connected to the cold storage (5), the liquid refrigerant outlet (12) being connected to the circulation pump (6), the gaseous refrigerant outlet (13) being connected to the compressor (2).
  3. 3. Intermittent work load heat radiation system according to claim 2, characterized in that the upper part in the reservoir (1) is provided with a baffle (14), the baffle (14) divides the inner cavity of the reservoir (1) into a reservoir cavity positioned below and an air cavity positioned above, the refrigerant inlet (11) is arranged below the baffle (14), the baffle (14) is provided with a through hole (141) communicating the reservoir cavity with the air cavity, and the through hole (141) is provided with a liquid blocking mechanism (15) for preventing liquid refrigerant from entering the air cavity.
  4. 4. An intermittent work load heat radiation system according to claim 3, characterized in that the liquid blocking mechanism (15) comprises a pontoon (151), a floater (152), a connecting rod (153) and a blocker (154), the pontoon (151) is arranged above the baffle plate (14), fixed on the baffle plate (14) around the passing hole (141), the floater (152) is arranged in the pontoon (151), one end of the connecting rod (153) is connected with the floater (152), the other end passes through the passing hole (141) to enter the liquid storage cavity, and the blocker (154) is arranged on the connecting rod (153) in the liquid storage cavity.
  5. 5. Intermittent work load heat radiation system according to claim 1, characterized in that a refrigerant passage (51) is provided in the regenerator (5), the refrigerant passage (51) is isolated from the cavity of the regenerator (5) by a heat conducting material, one end of the refrigerant passage (51) is connected with the accumulator (1), the other end is connected with the expansion valve (4) and the load heat exchanger (7), respectively, the cavity of the regenerator (5) outside the refrigerant passage (51) is formed into a regenerator cavity (52), and the phase change regenerator is filled in the regenerator cavity (52).
  6. 6. The intermittent work load heat radiation system according to claim 5, wherein the refrigerant passage (51) is a refrigerant pipe, a plurality of heat conduction fins (511) are provided on an outer peripheral surface of the refrigerant pipe, and the heat conduction fins (511) extend outside the refrigerant pipe in a coolant cavity (52).
  7. 7. The intermittent duty heat dissipating system of claim 6, wherein the heat conducting fin (511) blocks the coolant cavity (52), and wherein a plurality of through holes are provided on the heat conducting fin (511).
  8. 8. Intermittent duty cycle heat sink system according to any one of claims 1-7, further comprising a controller (8), said controller (8) being connected to said compressor (2), a low limit temperature sensor (53) being provided in said regenerator (5), said low limit temperature sensor (53) being connected to said controller (8) for enabling to control said compressor (2) to stop working when the temperature of said phase change coolant reaches a set low limit temperature.
  9. 9. The intermittent work load heat radiation system according to claim 8, characterized in that a high limit temperature sensor (54) is also provided in the cold accumulator (5), the high limit temperature sensor (54) being connected with the controller (8) to be able to send out an alarm message when the temperature of the phase change cold storage agent reaches a set high limit temperature.

Description

Intermittent working load heat dissipation system Technical Field The application relates to the field of refrigeration and heat dissipation, in particular to an intermittent work load heat dissipation system. Background During operation of high power devices, a large amount of heat is typically generated. If the generated heat cannot be timely emitted, the heat can be gradually accumulated in the equipment, so that the excessive temperature rise of the equipment is caused, the matching precision of parts in the equipment is affected, the abnormal operation of a control system is caused, the normal use of the equipment is affected, and even the equipment is damaged. In order to ensure the normal operation of the high-power equipment, a heat dissipation system is generally arranged for the high-power equipment, and the heat generated by the operation of the high-power equipment is taken away by using the heat dissipation system, so that the abnormal temperature rise caused by the accumulation of the heat in the high-power equipment is prevented. The common heat dissipation system comprises an air cooling heat dissipation system, a liquid cooling heat dissipation system and a refrigerating heat dissipation system, wherein the refrigerating heat dissipation system can absorb heat through the phase change of a refrigerant, has the advantages of high heat dissipation power, high heat dissipation efficiency, easy adjustment of heat dissipation power and the like, and is widely applied to heat dissipation of high-power equipment. When a high-power device is cooled by a cooling/heat-dissipating system, the cooling power of the cooling/heat-dissipating system is generally required to be equal to the heat generation power of the high-power device, and the larger the heat generation power of the high-power device is, the larger the cooling system of the cooling/heat-dissipating system is. While some high power devices are typically in intermittent operation, such as laser machining devices, directional energy weapons, and carrier-based aircraft ejectors. These devices usually operate in intermittent load conditions, and when operating in high load conditions, the operating power and the heat generating power are very high, and the heat dissipating system is required to provide very high cooling power, which results in a large volume and weight of the refrigeration device, higher requirements for heat transfer, and high production and use costs. Disclosure of Invention In order to reduce the maximum refrigerating power of the heat dissipation system, improve the energy utilization rate and reduce the production and use cost of the heat dissipation system, the application provides an intermittent work load heat dissipation system. The intermittent work load heat dissipation system provided by the application adopts the following technical scheme: The utility model provides an intermittent type work load cooling system, includes reservoir, compressor, condenser, expansion valve, regenerator, circulating pump and load heat exchanger, reservoir, compressor, condenser, expansion valve and regenerator connect gradually, form refrigeration cycle, reservoir, circulating pump, load heat exchanger and regenerator connect gradually, form heat dissipation cycle, store the refrigerant in the reservoir, store phase transition regenerator in the regenerator. Through adopting above-mentioned technical scheme, utilize reservoir, compressor, condenser, expansion valve and cold-storage device to connect gradually the refrigeration cycle who forms, can make the refrigerant in the circulation pipeline produce the phase transition and cool off the phase transition cold-storage agent in the cold-storage device to and store a large amount of liquid refrigerant in the reservoir, store a large amount of cold energy through liquid refrigerant. The liquid refrigerant in the liquid accumulator can be conveyed to the load heat exchanger by utilizing the heat dissipation circulation formed by sequentially connecting the liquid accumulator, the circulating pump, the load heat exchanger and the cold accumulator, the heat generated by high-power load operation is quickly absorbed by utilizing the gasification of the liquid refrigerant, the cold energy stored in the phase-change cold storage agent is absorbed by utilizing the gasified high-temperature gaseous refrigerant, the liquefaction of the gaseous refrigerant is accelerated, the cold energy with higher power is stored in the liquid refrigerant, and the heat dissipation requirement under the high-power load operation state is met. In a specific embodiment, the liquid storage device includes a refrigerant inlet, a liquid refrigerant outlet, and a gaseous refrigerant outlet, the liquid refrigerant outlet is disposed at a lower portion of the liquid storage device, the gaseous refrigerant outlet is disposed at a top portion of the liquid storage device, the refrigerant inlet is connected to the cold s