CN215930654U

CN215930654U - Separated gravity heat pipe heat exchange system

Info

Publication number: CN215930654U
Application number: CN202121685009.2U
Authority: CN
Inventors: 孟健; 林金龙
Original assignee: Nanjing Canatal Data Centre Environmental Tech Co Ltd
Current assignee: Nanjing Canatal Data Centre Environmental Tech Co Ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2022-03-01
Anticipated expiration: 2031-07-23

Abstract

The utility model relates to a separated gravity heat pipe heat exchange system, which comprises a heat pipe type evaporator and a heat pipe type condenser, wherein the heat pipe type evaporator comprises a plurality of evaporation heating pipes and an indoor fan blowing to an evaporation heat pipe bundle; the heat pipe type condenser comprises a plurality of condensing heat pipes and an outdoor fan for radiating the condensing heat pipe bundle, wherein both ends of the condensing heat pipe bundle are connected with a condenser liquid collecting pipe and a condenser gas collecting pipe, and the condenser liquid collecting pipe is connected with one side end of the condenser gas collecting pipe through a condenser vertical liquid collecting pipe; the air outlet of the evaporator gas collecting pipe is connected with the inlet of the condenser gas collecting pipe through a connecting air pipe; the bottom outlet of the condenser vertical liquid collecting pipe is connected with the top of the vertical liquid collecting pipe through a capillary tube. The problems of immersion and drying during the starting of the heat pipe are effectively solved, and the performance and the use efficiency of the heat exchange system are improved.

Description

Separated gravity heat pipe heat exchange system

Technical Field

The utility model relates to a separated gravity heat pipe heat exchange system, and belongs to the technical field of heat pipe exchangers.

Background

The heat pipe is a heat transfer element with high heat conductivity, transfers heat by evaporation and condensation of working medium in a totally-enclosed vacuum pipe shell, and has a series of advantages of very low internal heat resistance, extremely high heat conductivity, good isothermal property, quick start and the like due to phase change heat transfer. Therefore, the development of heat pipe type air conditioning units with high energy efficiency and reliable operation by adopting the heat pipe principle is one of the development trends of future machine room air conditioners.

The separated gravity heat pipe is one new kind of heat radiator. Because the evaporation section and the condensation section are separated, the power comes from the density difference of the refrigerant in the ascending pipe and the descending pipe. Therefore, the system has the advantages of flexible arrangement, high energy efficiency ratio, reliable operation and the like. The method is widely applied to occasions of base station heat dissipation, machine room heat dissipation and the like. Compared with the traditional heat exchanger, the micro-channel heat exchanger is more compact in structure, strong in heat exchange capacity and low in liquid filling rate. In recent years, the development potential is huge based on the increasing research and application of the compound. The application of the micro-channel heat exchanger to the separated gravity heat pipe is a heat dissipation scheme with great market prospect.

When the heat pipe system works, outdoor cold air is introduced into the heat pipe heat exchanger through the outdoor fan to exchange energy, then hot air of the cabinet is introduced into the heat pipe heat exchanger through the indoor fan to exchange heat, and then the hot air is sent into the machine room to cool the machine room, so that the running time of the compressor is reduced, the service life of the compressor is prolonged, the running and maintenance cost is saved, and the purposes of saving energy and reducing consumption are achieved. However, when the heat transfer condition is poor or the liquid filling amount is too much, the starting time of the heat pipe system is long or the operation cannot be started. The existing heat pipe system solves the problems of immersion and dryness of the evaporator by increasing a pipeline valve to control the flow of the refrigerant, and cannot fundamentally solve the problems due to the working conditions and principles of the valve.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the problems in the prior art, and provides a separated gravity assisted heat pipe heat exchange system, which can improve the circulation rate of gas-liquid two-phase flow in a heat exchanger, effectively solve the problems of immersion and drying during the starting of a heat pipe, and improve the performance and the use efficiency of the heat exchange system.

The utility model relates to a separated gravity heat pipe heat exchange system, which comprises a heat pipe type evaporator and a heat pipe type condenser, wherein the heat pipe type evaporator comprises a plurality of evaporation heating pipes and an indoor fan blowing to an evaporation heat pipe bundle; the heat pipe type condenser comprises a plurality of condensing heat pipes and an outdoor fan for radiating the condensing heat pipe bundle, a condenser liquid collecting pipe and a condenser gas collecting pipe are connected to two ends of the condensing heat pipe bundle, and the condenser liquid collecting pipe is connected with one side end of the condenser gas collecting pipe through a condenser vertical liquid collecting pipe; the air outlet of the evaporator air collecting pipe is connected with the inlet of the condenser air collecting pipe through a connecting air pipe; and the bottom outlet of the vertical liquid collecting pipe of the condenser is connected with the top of the vertical liquid collecting pipe through a capillary tube.

Furthermore, an evaporator clapboard is arranged between the upper part of the vertical liquid collecting pipe of the evaporator and the gas collecting pipe of the evaporator, and the lower part of the evaporator clapboard is provided with an overflow port.

Furthermore, a condenser partition plate is arranged between the top of the vertical liquid collecting pipe of the condenser and the condenser gas collecting pipe, and the condenser partition plate is connected with a condenser vertical blind pipe with two open ends and extending downwards.

Furthermore, the lower port of the vertical blind pipe of the condenser extends to the bottom of the vertical liquid collecting pipe of the condenser.

The utility model has the beneficial effects that: when the heat transfer condition is poor or the liquid filling amount is too much, the flow rate of the refrigerant in the heat pipe system is effectively improved through the pressure difference and the gas-liquid distribution in the system, and the problems of immersion and dryness of the evaporator when the heat pipe starts to be started are solved.

Drawings

FIG. 1 is a schematic structural diagram of a separated gravity assisted heat pipe heat exchange system according to the present invention.

In the figure: 1. a heat pipe evaporator; 101. evaporating a heating tube; 102. an evaporator liquid collection tube; 103. an evaporator gas collector; 104. an evaporator vertical liquid collecting pipe; 105. an evaporator vertical blind pipe; 106. an evaporator baffle; 107. an overflow port; 2. a heat pipe type condenser; 201. a condenser liquid collecting pipe; 202. a condenser gas collecting pipe; 203. a condenser vertical liquid collecting pipe; 204. a condenser baffle; 205. a condenser vertical blind pipe; 3. an indoor fan; 4. an outdoor fan; 5. a connecting liquid pipe; 6. a capillary tube; 7. is connected with an air pipe.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1, the separated gravity assisted heat pipe heat exchange system of the present invention comprises a heat pipe type evaporator 1 and a heat pipe type condenser 2, wherein the heat pipe type evaporator 1 comprises a plurality of evaporation heating pipes 101 and an indoor fan 3 blowing to an evaporation heat pipe bundle, two ends of the evaporation heat pipe bundle are connected with an evaporator liquid collecting pipe 102 and an evaporator gas collecting pipe 103, and one end of the evaporator liquid collecting pipe 102 is connected with one end of the evaporator gas collecting pipe 103 through an evaporator vertical liquid collecting pipe 104. The heat pipe type condenser 2 comprises a plurality of condensing heat pipes and an outdoor fan 4 for radiating the condensing heat pipe bundle, two ends of the condensing heat pipe bundle are connected with a condenser liquid collecting pipe 201 and a condenser gas collecting pipe 202, and one side end of the condenser liquid collecting pipe 201 and one side end of the condenser gas collecting pipe 202 are connected through a condenser vertical liquid collecting pipe 203; the air outlet of the evaporator gas collecting pipe 103 is connected with the inlet of the condenser gas collecting pipe 202 through a connecting air pipe 7; an evaporator vertical blind pipe 105 is arranged in the evaporator vertical liquid collecting pipe 104, and a liquid outlet of the condenser liquid collecting pipe 201 is connected with the top of the evaporator vertical blind pipe 105 through a connecting liquid pipe 5; the bottom outlet of the condenser vertical header 203 is connected to the top of the vertical header by capillary tube 6. The lower port of the evaporator vertical blind pipe 105 extends to the bottom of the evaporator vertical header pipe 104.

An evaporator clapboard 106 is arranged between the upper part of the vertical liquid collecting pipe 104 of the evaporator and the gas collecting pipe 103 of the evaporator, and the lower part of the evaporator clapboard 106 is provided with an overflow port 107.

A condenser partition plate 204 is arranged between the top of the condenser vertical liquid collecting pipe 203 and the condenser gas collecting pipe 202, and a condenser vertical blind pipe 205 which is open at two ends and extends downwards is connected to the condenser partition plate 204. The lower port of the condenser vertical blind pipe 205 extends to the bottom of the condenser vertical header pipe 203.

When the transition season meets the heat pipe operation condition, the outdoor fan 4 is started, the indoor fan 3 is started at the same time, the refrigerant in the system starts to circulate due to the gravity, and after the refrigerant in the heat pipe type evaporator 1 absorbs the heat of the indoor environment and is gasified, the refrigerant is discharged from the evaporator gas collecting pipe 103 and enters the heat pipe type condenser 2 through the connecting gas pipe 7, so that the heat is transferred to the outdoor environment; the refrigerant cooled in the heat pipe type condenser 2 is liquefied, enters the heat pipe type evaporator 1 through the connecting liquid pipe 5 to be gasified and absorb heat, and enters next cycle heat exchange; the process is accompanied with indoor evaporation heat exchange and outdoor condensation cooling.

When the heat transfer condition is poor, the heat pipe type evaporator 1 enters the heat pipe type condenser 2 through the connecting air pipe 7 when the internal pressure difference of the system, namely the refrigerant in the heat pipe type evaporator 1 is evaporated at high temperature to become gas, most of the gas is cooled and condensed into liquid through the heat pipe type condenser 2, and the liquid flows back to the heat pipe type evaporator 1 through the connecting liquid pipe 5; a small amount of gas can pass through the vertical blind pipe 205 of the condenser, and enter the vertical liquid collecting pipe 203 of the condenser to be condensed into liquid, or concentrate on the upper part of the vertical liquid collecting pipe 203 of the condenser, so that pressure difference is provided for the internal liquid, under the action of gravity, the liquid refrigerant flows into the vertical liquid collecting pipe 104 of the evaporator through the capillary tube 6, and pressure difference is provided for the original refrigerant liquid in the vertical liquid collecting pipe 104 of the evaporator, so that the liquid flow speed is increased, and the liquid can be rapidly subjected to heat exchange through the heat pipe type evaporator 1.

When the evaporator is started under the condition of excessive refrigerant filling amount, excessive liquid in the heat pipe type evaporator 1 flows back into the vertical liquid collecting pipe 104 of the evaporator through the inner overflow port 107, a liquid evaporation space is reserved at the upper part of the heat pipe type evaporator 1, and meanwhile, the returned liquid provides pressure difference for the liquid in the vertical liquid collecting pipe 104 of the evaporator, so that the liquid flow rate is increased.

When the heat pipe type evaporator 1 is dry, under the action of gas pressure and gravity, the liquid stored in the heat pipe type condenser 2 and the liquid in the vertical liquid collecting pipe 203 of the condenser can quickly flow back into the heat pipe type evaporator 1 for circulating heat exchange.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a disconnect-type gravity heat pipe heat transfer system, includes heat pipe formula evaporimeter and heat pipe formula condenser, its characterized in that: the heat pipe type evaporator comprises a plurality of evaporation heating pipes and an indoor fan blowing to an evaporation heat pipe bundle, two ends of the evaporation heat pipe bundle are connected with an evaporator liquid collecting pipe and an evaporator gas collecting pipe, and the evaporator liquid collecting pipe is connected with one side end of the evaporator gas collecting pipe through an evaporator vertical liquid collecting pipe; the heat pipe type condenser comprises a plurality of condensing heat pipes and an outdoor fan for radiating the condensing heat pipe bundle, a condenser liquid collecting pipe and a condenser gas collecting pipe are connected to two ends of the condensing heat pipe bundle, and the condenser liquid collecting pipe is connected with one side end of the condenser gas collecting pipe through a condenser vertical liquid collecting pipe; the air outlet of the evaporator air collecting pipe is connected with the inlet of the condenser air collecting pipe through a connecting air pipe; and the bottom outlet of the vertical liquid collecting pipe of the condenser is connected with the top of the vertical liquid collecting pipe through a capillary tube.

2. The split gravity heat pipe heat exchange system of claim 1, wherein: an evaporator clapboard is arranged between the upper part of the vertical liquid collecting pipe of the evaporator and the gas collecting pipe of the evaporator, and an overflow port is arranged at the lower part of the evaporator clapboard.

3. The split gravity heat pipe heat exchange system of claim 1, wherein: a condenser partition plate is arranged between the top of the vertical liquid collecting pipe of the condenser and the condenser gas collecting pipe, and a condenser vertical blind pipe with two open ends and extending downwards is connected to the condenser partition plate.

4. The split gravity heat pipe heat exchange system of claim 3, wherein: the lower port of the vertical blind pipe of the condenser extends to the bottom of the vertical liquid collecting pipe of the condenser.