阅读说明：本技术 一种内置重力热管自然冷多联制冷系统及控制方法 (Natural cooling multi-connected refrigeration system with built-in gravity heat pipe and control method ) 是由 王颖 曹会龙 赵大勇 欧阳超波 于 2019-11-01 设计创作，主要内容包括：本发明公开了一种内置重力热管自然冷多联制冷系统及控制方法,所述系统包括：若干个集中热管冷源模块以及与集中热管冷源模块热耦合连接的若干个动力环路模块,其中,集中热管冷源模块,包括：依次连接成环路的冷凝器、第一储液罐以及换热器,且第一储液罐的设置位置高于换热器的位置；所述动力环路模块,包括：依次连接成环路的第二储液罐、热管动力泵以及热管蒸发器；若干个动力环路模块的入口与液管支路连接；所述若干个动力环路模块的出口与气管支路连接；所述液管支路与气管支路连通；且液管支路与气管支路之间的管路与若干个集中热管冷源模块的换热器热耦合连接。应用本发明实施例,可以降低冷却系统的能耗。(The invention discloses a natural cooling multi-connected refrigeration system with a built-in gravity heat pipe and a control method, wherein the system comprises: a plurality of centralized heat pipe cold source module and with a plurality of power loop module of centralized heat pipe cold source module thermal coupling connection, wherein, centralized heat pipe cold source module includes: the condenser, the first liquid storage tank and the heat exchanger are sequentially connected into a loop, and the first liquid storage tank is higher than the heat exchanger; the power loop module comprising: the second liquid storage tank, the heat pipe power pump and the heat pipe evaporator are sequentially connected into a loop; the inlets of the plurality of power loop modules are connected with the liquid pipe branches; outlets of the plurality of power loop modules are connected with the air pipe branch; the liquid pipe branch is communicated with the air pipe branch; and the pipeline between the liquid pipe branch and the air pipe branch is thermally coupled with the heat exchangers of the plurality of concentrated heat pipe cold source modules. By applying the embodiment of the invention, the energy consumption of the cooling system can be reduced.)

1. A built-in gravity heat pipe natural cooling multi-connected refrigeration system is characterized by comprising: a plurality of heat pipe cold source modules and a plurality of power loop modules thermally coupled with the heat pipe cold source modules, wherein,

the heat pipe cold source module comprises: the condenser, the first liquid storage tank and the heat exchanger are sequentially connected into a loop, and the first liquid storage tank is higher than the heat exchanger;

the power loop module comprising: the second liquid storage tank, the heat pipe power pump and the heat pipe evaporator are sequentially connected into a loop;

the inlets of the plurality of power loop modules are connected with the liquid pipe branches;

outlets of the plurality of power loop modules are connected with the air pipe branch;

the liquid pipe branch is communicated with the air pipe branch; and the pipeline between the liquid pipe branch and the air pipe branch is thermally coupled with the heat exchangers of the plurality of concentrated heat pipe cold source modules.

2. The natural cooling multi-connected refrigeration system with the built-in gravity heat pipe as recited in claim 1, wherein a first filter and a first throttle valve are further connected in series between the first liquid storage tank and the heat exchanger.

3. The natural cooling multi-connected refrigeration system with the built-in gravity heat pipe as recited in claim 2, wherein a first solenoid valve is further connected between the first liquid storage tank and the heat exchanger.

4. The natural cooling multi-connected refrigerating system with the built-in gravity heat pipe as recited in claim 1, wherein a compressor and a second filter are further connected in series between the condenser and the heat exchanger.

5. The natural cooling multi-connected refrigerating system with the built-in gravity heat pipe as recited in claim 4, wherein a second electromagnetic valve is further connected between the condenser and the heat exchanger.

6. The natural cooling multi-connected refrigerating system with the built-in gravity heat pipe as recited in claim 1, wherein the heat pipe power pump is further connected with a check valve in parallel.

7. The natural cooling multi-connected refrigerating system with the built-in gravity heat pipe as recited in claim 1, wherein a sprayer is further arranged above the condenser.

8. The natural cooling multi-connected refrigeration system with the built-in gravity heat pipe as recited in claim 1, wherein a bypass solenoid valve is further connected between the inlet pipeline and the outlet pipeline of the power loop module.

9. A control method of a natural cooling multi-connected refrigeration system with a built-in gravity heat pipe is characterized in that the system comprises the following steps: a plurality of heat pipe cold source modules and a plurality of power loop modules thermally coupled with the heat pipe cold source modules, wherein,

the heat pipe cold source module comprises: the condenser, the first liquid storage tank and the heat exchanger are sequentially connected into a loop, and the first liquid storage tank is higher than the heat exchanger;

the power loop module comprising: the second liquid storage tank, the heat pipe power pump and the heat pipe evaporator are sequentially connected into a loop;

the inlets of the plurality of power loop modules are connected with the liquid pipe branches;

outlets of the plurality of power loop modules are connected with the air pipe branch;

the liquid pipe branch is communicated with the air pipe branch; and the pipeline between the liquid pipe branch and the gas pipe branch is thermally coupled with the heat exchangers of the plurality of concentrated heat pipe cold source modules;

a compressor and a second filter are also connected in series between the first liquid storage tank and the heat exchanger; a sprayer is also arranged above the condenser;

the method comprises the following steps:

1) judging whether the difference between the temperature of the environment where the heat pipe evaporator is located and the first preset threshold value is greater than or equal to the temperature of the environment where the condenser is located or not under the condition that the refrigeration system needs to be used for refrigeration; if yes, executing step 2); if not, executing the step 3);

2) keeping the compressor in a closed state;

3) judging whether the temperature of the environment where the condenser is located is greater than the difference between the temperature of the environment where the heat pipe evaporator is located and a first preset threshold value, and whether the temperature of the environment where the condenser is located is less than or equal to the difference between the temperature of the environment where the heat pipe evaporator is located and a second preset threshold value are both true, wherein the first preset threshold value is greater than the second preset threshold value; if yes, executing step 4); if not, executing the step 5);

4) when the preset condition of spraying is met, starting the sprayer until the temperature of the environment where the condenser is located is greater than the difference between the temperature of the environment where the heat pipe evaporator is located and a first preset threshold value;

5) judging whether the temperature of the environment where the condenser is located is greater than the difference between the temperature of the environment where the heat pipe evaporator is located and a second preset threshold value, and whether the temperature of the environment where the condenser is located is less than or equal to the difference between the temperature of the environment where the heat pipe evaporator is located and a third preset threshold value is true, wherein the second preset threshold value is greater than the third preset threshold value; if yes, executing step 6); if not, executing step 7);

6) starting the compressor and additionally starting at least one power loop module; and starting the sprayer under the condition of meeting the spraying condition;

7) and starting the compressor.

Technical Field

The invention relates to a refrigeration system and a control method, in particular to a natural cooling multi-connected refrigeration system with a built-in gravity heat pipe and a control method.

Background

With the rapid development of the data center industry, the proportion of the electric energy consumed by the data center in the total electric energy consumption is higher and higher. For a data center, how to reduce the energy consumption of the data center to reduce the cost is an urgent technical problem to be solved; likewise, it is a good choice for the country to realize a green data center with low energy consumption.

Currently, it is common to choose to reduce the energy consumption for cooling a data center in order to reduce the energy consumption of the data center. The existing low-energy consumption cooling mode comprises the following steps: an air-air indirect evaporative cooling scheme, a fresh air cooling scheme, an indirect evaporative cooling scheme taking water as a medium and the like. However, the current energy-saving cooling scheme mainly has the following defects: the air-air heat exchange cooling scheme has low heat exchange efficiency, and the size of the cooling equipment under the same cooling capacity is larger; the fresh air cleaning treatment and later maintenance cost in the fresh air cooling scheme is higher; the indirect evaporative cooling or direct evaporative cooling scheme using water as a medium has higher water treatment and air treatment cost.

Therefore, the technical problem of high cooling cost of the data center exists in the prior art.

Disclosure of Invention

The invention aims to solve the technical problem of providing a natural cooling multi-connected refrigeration system with a built-in gravity heat pipe and a control method thereof, so as to solve the problem in the prior art.

The invention solves the technical problems through the following technical scheme:

the embodiment of the invention provides a natural cooling multi-connected refrigeration system with a built-in gravity heat pipe, which comprises: a plurality of heat pipe cold source modules and a plurality of power loop modules thermally coupled with the heat pipe cold source modules, wherein,

the heat pipe cold source module comprises: the condenser, the first liquid storage tank and the heat exchanger are sequentially connected into a loop, and the first liquid storage tank is higher than the heat exchanger;

the power loop module comprising: the second liquid storage tank, the heat pipe power pump and the heat pipe evaporator are sequentially connected into a loop;

the inlets of the plurality of power loop modules are connected with the liquid pipe branches;

outlets of the plurality of power loop modules are connected with the air pipe branch;

the liquid pipe branch is communicated with the air pipe branch; and the pipeline between the liquid pipe branch and the air pipe branch is thermally coupled with the heat exchangers of the plurality of concentrated heat pipe cold source modules.

Optionally, a first filter and a first throttle valve are further connected in series between the first liquid storage tank and the heat exchanger.

Optionally, a first electromagnetic valve is further connected between the first liquid storage tank and the heat exchanger.

Optionally, a compressor and a second filter are further connected in series between the first liquid storage tank and the heat exchanger.

Optionally, a second electromagnetic valve is further connected between the first liquid storage tank and the heat exchanger.

Optionally, the heat pipe power pump is further connected in parallel with a check valve.

Optionally, a sprayer is further arranged above the condenser.

The embodiment of the invention provides a control method of a natural cooling multi-connected refrigeration system with a built-in gravity heat pipe, wherein the system comprises the following steps: a plurality of heat pipe cold source modules and a plurality of power loop modules thermally coupled with the heat pipe cold source modules, wherein,

the heat pipe cold source module comprises: the condenser, the first liquid storage tank and the heat exchanger are sequentially connected into a loop, and the first liquid storage tank is higher than the heat exchanger;

the power loop module comprising: the second liquid storage tank, the heat pipe power pump and the heat pipe evaporator are sequentially connected into a loop;

the inlets of the plurality of power loop modules are connected with the liquid pipe branches;

outlets of the plurality of power loop modules are connected with the air pipe branch;

the liquid pipe branch is communicated with the air pipe branch; and the pipeline between the liquid pipe branch and the gas pipe branch is thermally coupled with the heat exchangers of the plurality of concentrated heat pipe cold source modules;

a compressor and a second filter are also connected in series between the first liquid storage tank and the heat exchanger; a sprayer is also arranged above the condenser;

the method comprises the following steps:

1) judging whether the difference between the temperature of the environment where the heat pipe evaporator is located and the first preset threshold value is greater than or equal to the temperature of the environment where the condenser is located or not under the condition that the refrigeration system needs to be used for refrigeration; if yes, executing step 2); if not, executing the step 3);

2) keeping the compressor in a closed state;

3) judging whether the temperature of the environment where the condenser is located is greater than the difference between the temperature of the environment where the heat pipe evaporator is located and a first preset threshold value, and whether the temperature of the environment where the condenser is located is less than or equal to the difference between the temperature of the environment where the heat pipe evaporator is located and a second preset threshold value are both true, wherein the first preset threshold value is greater than the second preset threshold value; if yes, executing step 4); if not, executing the step 5);

4) when the preset condition of spraying is met, starting the sprayer until the temperature of the environment where the condenser is located is greater than the difference between the temperature of the environment where the heat pipe evaporator is located and a first preset threshold value;

5) judging whether the temperature of the environment where the condenser is located is greater than the difference between the temperature of the environment where the heat pipe evaporator is located and a second preset threshold value, and whether the temperature of the environment where the condenser is located is less than or equal to the difference between the temperature of the environment where the heat pipe evaporator is located and a third preset threshold value is true, wherein the second preset threshold value is greater than the third preset threshold value; if yes, executing step 6); if not, executing step 7);

6) starting the compressor and additionally starting at least one power loop module; and starting the sprayer under the condition of meeting the spraying condition;

7) and starting the compressor.

Compared with the prior art, the invention has the following advantages:

(1) by applying the embodiment of the invention, the first liquid storage tank in the centralized heat pipe cold source module is arranged at a position higher than the heat exchanger, so that the power circulation is formed by fully utilizing the fall of the system, and the energy consumption is reduced compared with the forced power circulation in the prior art.

(2) The cold source is integrated with the cold source module of the centralized heat pipe, so that the modularization degree of the equipment is improved, the installation cost can be reduced, and the capacity expansion is easy.

(3) Because a plurality of power loop modules of the heat dissipation end are constructed by being divided into a plurality of modules, the power loop modules can be arranged at different positions to be dispersedly arranged, and the space adaptability of the equipment is improved.

Drawings

Fig. 1 is a schematic structural diagram of a natural cooling multiple refrigeration system with a built-in gravity heat pipe according to an embodiment of the present invention;

fig. 2 is another schematic structural diagram of a natural cooling multiple refrigeration system with a built-in gravity heat pipe according to an embodiment of the present invention;

fig. 3 is a schematic flow chart of a control method of a natural cooling multiple refrigeration system with a built-in gravity heat pipe according to an embodiment of the present invention.

Detailed Description

The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.