CN115604994A - Data center module multi-connected heat pipe air conditioning cold storage system and control method - Google Patents

Abstract

The invention provides a data center module multi-connected heat pipe air conditioner cold accumulation system and a control method, wherein the data center module multi-connected heat pipe air conditioner cold accumulation system comprises the following steps: an air conditioner terminal; each outdoor unit comprises an outdoor heat exchanger and a compressor, and each outdoor heat exchanger is connected with the compressor and the tail end of the air conditioner to form a refrigerating loop; the cold accumulation assembly is used for storing cold accumulation liquid; and each heat pipe heat exchange device comprises a first pipeline and a second pipeline, the two ends of the first pipeline are communicated with the two ends of the cold accumulation assembly to form a cooling loop, and the second pipeline is connected with the tail end of the air conditioner to form a heat pipe loop.

Description

Data center module multi-connected heat pipe air conditioning cold storage system and control method

technical field

The invention relates to the field of electrical appliances, in particular to a data center module multi-connected heat pipe air-conditioning cold storage system.

Background technique

The carbon emission intensity continues to decline, and the energy consumption requirements of the data center industry are further increased. As an effective energy-saving measure, the modular multi-connected heat pipe refrigeration system makes full use of natural cold sources through the heat pipe system, and is more and more widely used in the data center industry.

When the modular multi-connected heat pipe refrigeration system is used as a single cold source to provide cooling for the data center, the common emergency supplementary cooling measures are to use UPS to provide uninterrupted power supply for the compressor, and provide uninterrupted cooling through compressor refrigeration.

However, UPS uninterruptible cooling has the following disadvantages:

1) To increase the power distribution capacity, it is necessary to add a set of air-conditioning power distribution UPS system, battery and other equipment, which will occupy the space in the computer room and reduce the out-of-shelf rate of the computer room.

2) Adding a whole set of UPS and other power supply equipment will increase the total investment more, and the investment recovery period will be long.

3) When setting up the UPS system, there is a switching process of the power system, which has a great impact on the safety of the system operation.

Therefore, how to propose a new emergency supplementary cooling system has become an urgent problem to be solved at present.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

Therefore, the first object of the present invention is to provide a data center module multi-connected heat pipe air conditioning cold storage system.

In view of this, the technical solution of the first aspect of the present invention provides a data center module multi-connected heat pipe air-conditioning cold storage system, including: an air-conditioning terminal; at least two outdoor units, each outdoor unit includes an outdoor heat exchanger and a compressor, Each outdoor heat exchanger is connected with the compressor and the end of the air conditioner to form a refrigeration circuit; the cold storage component is used to store the cold storage liquid; at least two heat pipe heat exchange devices, each heat pipe heat exchange device includes a first pipeline and a second pipeline , both ends of the first pipeline communicate with both ends of the cold storage assembly to form a cooling circuit, and the second pipeline is connected to the end of the air conditioner to form a heat pipe circuit.

According to the data center module multi-connected heat pipe air conditioner cold storage system provided by the present invention, it includes: an air conditioner terminal, at least two outdoor units, a cold storage assembly and at least two heat pipe heat exchange devices. Among them, the end of the air conditioner is an indoor unit or an indoor heat exchanger, and a single outdoor unit includes an outdoor heat exchanger and a compressor, and the outdoor heat exchanger and the compressor are connected in sequence with the air conditioner end with an indoor heat exchanger, thus forming A refrigeration circuit with an outdoor heat exchanger, a compressor, and an air-conditioning terminal. Under normal working conditions, the refrigerant circulates in the refrigeration circuit to complete the cooling of the room or the machine room and reduce the temperature in the room or the machine room. Wherein, the cold storage component may be a cold storage tank for storing low-temperature cold storage liquid, and the cold storage liquid may be water or other liquids. The heat pipe heat exchange device includes a first pipeline and a second pipeline, which is essentially a heat exchanger, wherein the second pipeline communicates with the end of the air conditioner to form a heat pipe circuit, and the two ends of the first pipeline connect with the cold storage component Both ends are connected to form a cooling circuit. In the event of a power failure of the air-conditioning unit or other emergency situations, the refrigeration circuit of the outdoor unit cannot work, the cold storage liquid in the cold storage component circulates in the cooling circuit, and the refrigerant in the heat pipe circuit is cooled by the heat pipe heat exchange device, that is, That is to say, when the outdoor unit is shut down, the cold storage liquid in the cold storage component cools down the heat pipe circuit through the heat pipe heat exchange device, and further transmits the cold energy to the end of the air conditioner, thereby completing the cooling of the room or the machine room. Compared with the UPS system currently used, this solution is a brand-new emergency supplementary cooling system, using cold storage liquid as the energy storage energy. When it comes to energy, it is safer, reduces carbon emissions, and is more environmentally friendly. At the same time, the supplementary cooling capacity can be increased only by increasing the volume of the cold storage component, which is more cost-effective and reduces costs when increasing the supplementary cooling capacity. In addition, the cold storage components can be placed outdoors without occupying indoor space, improving the utilization rate of the indoor computer room.

In the above technical solution, at least one outdoor unit includes a cold storage host, and the data center module multi-connected heat pipe air-conditioning cold storage system further includes: a cold storage pipeline for forming cold storage with the second pipeline, the outdoor heat exchanger and the compressor of the cold storage host The cold storage circuit can exchange heat with the cooling circuit, so that the cooling circuit can store cold.

In this technical solution, one or several of the outdoor units can be used as the cold storage host, and the cold storage host, the outdoor heat exchanger and the compressor form a cold storage loop, and the cold storage loop can be connected with the cooling loop through a heat pipe heat exchanger. heat exchange. That is to say, when the cold storage host is working normally in the air-conditioning cold storage system, it works with the outdoor heat exchanger and the compressor to cool the cold storage liquid in the cold storage component, so that the cold storage liquid can be continuously kept in a state that can be used as a backup energy source. The cold storage circuit and cooling The circuit can complete the storage of cold energy, and store the cold energy in the cold storage component. Based on the ordinary air-conditioning cold storage system, this solution uses two loops, heat pipe heat exchangers and cold storage components to store the cooling capacity and use it in emergency situations. Compared with using the UPS system as an emergency supplementary cooling method, the power consumption is reduced. more environmentally friendly.

In the above technical solution, the cold storage pipeline includes a summary pipeline connected to the second pipeline, the first branch and the second branch are arranged on the summary pipeline, and the outdoor heat exchanger and compressor of the first branch and the cold storage host The second branch is used to connect the second pipeline with the end of the air conditioner to form a heat pipe circuit; the first branch is provided with a first control valve that can be opened and closed, and the second branch is provided with a first control valve that can be opened and closed. Two control valves.

In this technical solution, the cold storage pipeline also includes a summary pipeline, wherein the summary pipeline is a part of the pipeline commonly used by the cold storage circuit and the heat pipe circuit, and the summary pipeline is provided with a first branch and a second branch, that is, It can be said that by setting the summary pipeline, the setting of a part of the pipeline can be reduced, and at the same time, the number of nozzles can also be reduced, which is more convenient in production, processing and assembly, and has a simple structure. The first branch is connected to the outdoor heat exchanger and compressor in the cold storage host, and the second branch is connected to the end of the air conditioner, that is, the indoor heat exchanger. When the air conditioner cold storage system is working normally, the refrigerant circulates in the second branch , for indoor or machine room cooling, when it is necessary to replenish the cooling capacity of the cold storage component, the first branch is activated to cool down the cold storage liquid in the cooling circuit. Further, a first control valve and a second control valve are respectively provided on the first branch and the second branch, the first control valve can control the conduction of the first branch, and the second control valve can control the conduction of the second branch. The conduction of the first branch and the second branch can work at the same time, or they can work independently. According to the first control valve and the second control valve, the conduction of the two branches is controlled according to the demand, that is, the first control valve is used. And the second control valve can control whether the cold storage circuit and the cooling circuit work, and further complete the supplementary cold capacity of the cold storage component, and the structure is simple.

In the above technical solution, the cold storage assembly further includes: a temperature sensor for detecting the temperature of the cold storage liquid; a cold storage control device for opening the cold storage circuit of the cold storage host when the temperature of the cold storage liquid is higher than a temperature threshold.

In this technical solution, the cold storage assembly also includes a temperature sensor, and the temperature sensor can be arranged inside the cold storage assembly, that is, inside the cold storage tank, wherein the temperature sensor is arranged on the top of the cold storage tank, and there is a quantity of liquid stored in the cold storage tank. Maximum value, when the liquid storage volume reaches the maximum value, there is a part of space on the top of the cold storage tank, so the temperature sensor installed on the top of the cold storage tank does not directly contact with the cold storage liquid, and detects the air temperature in the cold storage tank. The temperature of the air is used as the detection temperature. When the temperature sensor fails and needs to be replaced, the temperature sensor can be replaced without releasing the cold storage liquid in the cold storage tank, which is convenient for maintenance. Of course, it can also be installed at the bottom of the cold storage tank to detect the actual temperature of the cold storage liquid, and the detection result of the temperature sensor placed in the cold storage liquid is more accurate. When the temperature of the cool storage liquid is higher than the temperature threshold, the cool storage circuit and the cooling circuit are turned on to cool down the cool storage liquid.

Among them, when the cold storage host opens the cold storage circuit, the cold storage host also serves as an outdoor unit, which can cool down the room or the machine room. At the same time as liquid cooling, the cold storage host can also cool the air conditioner terminal, and the cooling mode and cold storage mode can run at the same time. Of course, in order to quickly complete the cooling of the cold storage liquid, only one of the cold storage mode and the cooling mode of the cold storage host can be operated independently.

In the above technical solution, the temperature threshold is greater than or equal to 15.5°C.

In this technical solution, the temperature at which the cold storage liquid can be used as a backup cold source is generally 15°C. When the temperature of the cold storage liquid is greater than or equal to 15.5°C, the cold storage circuit is turned on, and the cold storage liquid in the cold storage component is cooled by the heat pipe heat exchange device. Keep it at a temperature that can serve as a backup cooling source. By setting the temperature threshold, the cold storage fluid can be kept at a low temperature continuously, and it can be used as a backup cold source during a power outage to ensure the stability of the emergency supplementary cooling system. Of course, the normal temperature of the cold storage liquid is set according to the requirement, and the temperature threshold can also be set according to the normal temperature of the cool storage liquid.

In the above technical solution, the data center module multi-connected heat pipe air-conditioning cold storage system further includes a cold pump device, including a first cold pump, which is arranged on the cooling circuit and is used to circulate the cooling liquid in the cooling circuit.

In this technical solution, the air-conditioning cold storage system further includes a cold pump device, and the cold pump device includes a first cold pump, which is arranged on a cooling circuit with a cold storage component, and circulates the cold storage liquid in the cooling circuit through the first cold pump, At the same time, compared with the way without a cold pump, the installation of the first cold pump can promote the circulation of the cold storage liquid in the cooling circuit. While the cold storage liquid flows rapidly, the refrigerant in the cold storage circuit can be fully cooled by the heat pipe heat exchange device Heat exchange, that is, the use of a cold pump device can accelerate the circulation of the cold storage liquid, and then quickly cool the cold storage liquid.

In the above technical solution, the cold pump device further includes a second cold pump, and the second cold pump is arranged in parallel at both ends of the first cold pump; the first cold pump is used to cool the cooling circuit to cool the heat pipe circuit. , the second cold pump is used to start when the cooling circuit stores cold.

In this technical solution, the cold pump device further includes a second cold pump, and the second cold pump is arranged in parallel with the first cold pump, that is, the second cold pump is connected in parallel at both ends of the first cold pump, wherein the first cold pump is used for The cooling circuit releases cold energy to the heat pipe heat exchanger, and the heat pipe heat exchanger cools the refrigerant liquid in the heat pipe circuit, thereby completing the cooling of the room or the machine room. The second cold pump is turned on when the cooling circuit needs to replenish the cooling capacity. By setting the second cold pump, the flow of the cold storage liquid in the cooling circuit can be accelerated, so that the cold storage liquid can fully exchange heat and quickly realize the cooling of the cold storage liquid. Of course, the first cold pump and the second cold pump can also be turned on at the same time when simply supplementing cooling capacity and releasing cooling capacity. Since their circulation directions are the same, when the two cooling pumps work at the same time, the cooling circuit The cold storage fluid in the system circulates faster, speeding up the cooling or supplementary cooling capacity of the room or machine room, which can be set according to actual needs.

In the above technical solution, the cold storage component further includes: a battery for powering the cold pump device.

In this technical solution, the cold storage component also includes a battery. When the emergency supplementary cooling mode is started, most of the cases are powered off. Therefore, the cold pump device needs an additional power source, and the battery is used to supply power to the cold pump device to ensure It can also be used normally during power outages.

In the above technical solution, a third control valve is provided on the cooling circuit to control the opening and closing of the cooling circuit; or a fourth control valve is provided on the cooling circuit to control the opening and closing of the branch where the second cold pump is located; A fifth control valve is provided on the cooling circuit to control the opening and closing of the branch circuit where the first cold pump is located.

In this technical solution, a third control valve is provided on the cooling circuit, and the third control valve can control the opening and closing of the cooling circuit. When the air-conditioning cold storage system is working normally, and the cold storage liquid is also at a low temperature to meet the working conditions, at this time , the third control valve is closed, setting the third control valve can effectively prevent the flow of cold storage liquid in the cooling circuit, and reduce the flow of cold storage liquid when the cold storage component is not required to release the cooling capacity, thereby reducing the loss of cooling capacity of the cold storage liquid.

In another technical solution, a fourth control valve is provided on the cooling circuit to control the opening and closing of the branch where the second cold pump is located, and a fifth control valve is provided in the cooling circuit to control the branch where the first cold pump is located. Branches open and close. The first cold pump and the second cold pump are equipped with control valves on their respective branches, and the flow of the cold storage liquid is further reduced through the fourth control valve and the fifth control valve. loss of cooling.

The data center module multi-connected heat pipe air-conditioning cold storage system also includes a control device, which is used to control the operation of the refrigeration circuit in the power-on state for cooling; in the power-off state, control the operation of the cooling circuit and the heat pipe circuit to pass the heat pipe circuit Refrigerate.

Further, the control device is also used to control the operation of the cold storage circuit and the cooling circuit so as to store cold in the cold storage component through the cold storage circuit and the cooling circuit when the temperature of the cold storage liquid in the cold storage component is greater than the temperature threshold in the power-on state.

The technical solution of the second aspect of the present invention provides a control method for a data center module multi-connected heat pipe air-conditioning cold storage system, which is used in the data center module multi-connected heat pipe air-conditioning cold storage system provided in the first aspect. The control method includes: in the power-on state , to control the operation of the refrigeration circuit for cooling; in the power-off state, control the operation of the cooling circuit and the heat pipe circuit for cooling through the heat pipe circuit.

In this technical solution, in the power-on state, the cooling mode is started, and the cooling mode is to cool the air-conditioning terminal. In the power-off state, the refrigeration host and the cold storage host are all powered off and unable to work. At this time, the cooling circuit and the heat pipe circuit are started to cool the air conditioner terminal through the cold storage component. This kind of control method is simple, and the control cost is low. It only needs a few control valves, pipelines and cold storage components.

In the above technical solution, the data center module multi-connected heat pipe air-conditioning cold storage system includes a cold storage circuit, and the control method includes: when the temperature of the cold storage liquid in the cold storage component is greater than the temperature threshold in the power-on state, control the operation of the cold storage circuit and the cooling circuit to Store cold in the cold storage assembly through the cold storage circuit and the cooling circuit.

In this technical solution, in the power-on state, the cold storage host has two working modes. Specifically, according to whether the temperature of the cold storage liquid meets the cold storage requirements, it is divided into a cold storage mode and a cooling mode. If required, start the cold storage mode, which is to store cold for the cold storage components, and store the cold energy in the cold storage liquid for use in emergency replenishment cooling. If the temperature of the cold storage liquid meets the cold storage requirements, the cooling mode is started. The cooling mode is to cool the end of the air conditioner, that is, the cold storage host can cool the room or the machine room like a refrigeration host. Specifically, the temperature of the cold storage liquid is obtained; then, it is judged whether the temperature of the cold storage liquid is higher than the temperature threshold, and when the temperature of the cold storage liquid is greater than or equal to the temperature threshold, the first control valve is opened, the second control valve is closed, and the cold storage circuit is started. Open the cold pump device, the third control valve, the fourth control valve and the fifth control valve, and start the cooling circuit; when the temperature of the cold storage liquid drops below the temperature threshold, close the first control valve, close the cold storage circuit, and turn off the cold pump device , the third control valve, the fourth control valve and the fifth control valve to close the cooling circuit.

Additional aspects and advantages of the invention will become apparent in the description which follows, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and comprehensible from the description of the embodiments in conjunction with the following drawings, wherein:

Figure 1 shows a schematic structural view of a data center module multi-connected heat pipe air-conditioning cold storage system provided by an embodiment of the present invention;

Fig. 2 shows another schematic structural view of the data center module multi-connected heat pipe air-conditioning cold storage system provided by the embodiment of the present invention;

Fig. 3 shows a schematic flowchart of a control method of a data center module multi-connected heat pipe air-conditioning cold storage system provided by an embodiment of the present invention;

Fig. 4 shows another schematic flowchart of the control method of the data center module multi-connected heat pipe air-conditioning and cold storage system provided by the embodiment of the present invention.

Wherein, the corresponding relationship between reference numerals and component names in Fig. 1 and Fig. 2 is:

1 air conditioner terminal, 2 outdoor unit, 21 outdoor heat exchanger, 22 compressor, 23 first control valve, 24 second control valve, 3 cold storage component, 4 heat pipe heat exchange device, 41 first pipeline, 42 second pipe Road, 5 cold storage host, 6 cold pump device, 61 first cold pump, 62 second cold pump, 100 refrigeration circuit, 200 cooling circuit, 202 third control valve, 204 fourth control valve, 206 fifth control valve, 300 Heat pipe circuit, 400 cold storage circuit.

detailed description

In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

The data center module multi-connected heat pipe air-conditioning and cold storage system provided by the present invention will be described below with reference to FIG. 1 and FIG. 2 .

Embodiment one

The data center module multi-connected heat pipe air-conditioning cold storage system provided according to the present invention, as shown in Figure 1, includes an air-conditioning terminal 1; at least two outdoor units 2, each of which includes an outdoor heat exchanger 21 and a compressor 22, An outdoor heat exchanger 21 is connected with the compressor 22 and the air conditioner terminal 1 to form a refrigeration circuit 100; the cold storage assembly 3 is used to store the cold storage liquid; at least two heat pipe heat exchange devices 4, and each heat pipe heat exchange device 4 includes a first Both ends of the first pipeline 41 and the second pipeline 42 communicate with both ends of the cold storage assembly 3 to form a cooling circuit 200 , and the second pipeline 42 is connected to the air conditioner terminal 1 to form a heat pipe circuit 300 .

The data center module multi-connected heat pipe air conditioner cold storage system provided by the present invention includes: an air conditioner terminal 1, at least two outdoor units 2, a cold storage assembly 3 and at least two heat pipe heat exchange devices 4. Wherein, the air conditioner terminal 1 is an indoor unit or an indoor heat exchanger, and a single outdoor unit 2 includes an outdoor heat exchanger 21 and a compressor 22, an outdoor heat exchanger 21 and a compressor 22, and an air conditioner with an indoor heat exchanger. The terminals 1 are connected in sequence to form a refrigeration circuit 100 with an outdoor heat exchanger 21, a compressor 22 and an air conditioner terminal 1. Under normal working conditions, the refrigerant circulates in the refrigeration circuit 100 to complete the cooling of the room or the machine room. Lower the temperature in the room or in the computer room. Wherein, the cold storage component 3 may be a cold storage tank for storing low-temperature cold storage liquid, and the cold storage liquid may be water or other liquids. The heat pipe heat exchange device 4 includes a first pipeline 41 and a second pipeline 42, which is essentially a heat exchanger, wherein the second pipeline 42 communicates with the air conditioner terminal 1 to form a heat pipe circuit 300, and the first pipeline 41 The two ends of each communicate with the two ends of the cold storage assembly 3, thereby forming a cooling circuit 200. In the case of power failure of the air-conditioning unit or other emergency situations, the refrigeration circuit 100 of the outdoor unit 2 cannot work, and the cold storage liquid in the cold storage assembly 3 circulates in the cooling circuit 200, and the cooling in the heat pipe circuit 300 is refrigerated by the heat pipe heat exchange device 4. That is to say, when the outdoor unit 2 is shut down, the cold storage liquid in the cold storage component 3 cools down the heat pipe circuit 300 through the heat pipe heat exchange device 4, and further transfers the cold energy to the air conditioner terminal 1, thereby completing the cooling of the indoor or machine room. cooling. Compared with the UPS system currently used, this solution is a brand-new emergency supplementary cooling system, using cold storage liquid as the energy storage energy. When it comes to energy, it is safer, reduces carbon emissions, and is more environmentally friendly. At the same time, it is only necessary to increase the supplementary cooling capacity by increasing the volume of the cold storage component 3 , which is more cost-effective and reduces costs when increasing the supplementary cooling capacity. In addition, the cold storage component 3 can be placed outdoors without occupying indoor space, thereby improving the utilization rate of the indoor machine room.

In the above embodiment, as shown in FIG. 1, at least one outdoor unit 2 includes a cold storage host 5, and the data center module multi-connected heat pipe air-conditioning cold storage system also includes: a cold storage pipeline for connecting with the second pipeline 42 and the cold storage host 5. The outdoor heat exchanger 21 and the compressor 22 form a cold storage circuit 400, and the cold storage circuit 400 can exchange heat with the cooling circuit 200, so that the cooling circuit 200 stores cold.

In this embodiment, one or several outdoor machines 2 among the plurality of outdoor units 2 can be used as the cold storage main unit 5, and the cold storage main unit 5, the outdoor heat exchanger 21 and the compressor 22 form a cold storage circuit 400, and the cold storage circuit 400 can be connected with The cooling circuit 200 exchanges heat through a heat pipe heat exchanger. That is to say, when the cold storage host 5 is in the normal operation of the air-conditioning cold storage system, the outdoor heat exchanger 21 and the compressor 22 cool the cold storage liquid in the cold storage assembly 3, so that the cold storage liquid can be continuously kept in a state that can be used as a backup energy source. The cold storage circuit 400 and the cooling circuit 200 can complete the storage of cold energy, and store the cold energy in the cold storage assembly 3 . Based on the ordinary air-conditioning cold storage system, this solution uses two loops, heat pipe heat exchangers and cold storage components 3 to store the cooling capacity and use it in emergency situations. The use of electric energy is more environmentally friendly.

In the above-mentioned embodiment, as shown in FIG. 1 , the cold storage pipeline includes a summary pipeline connected to the second pipeline 42, the summary pipeline is provided with a first branch and a second branch, and the first branch and the cold storage host The outdoor heat exchanger 21 of 5 is connected to the compressor 22, and the second branch is used to connect the second pipeline 42 with the air conditioner terminal 1 to form a heat pipe circuit 300; the first branch is provided with a first control valve that can be opened and closed 23. The second branch is provided with a second control valve 24 capable of opening and closing.

In this embodiment, the cold storage pipeline also includes a summary pipeline, wherein the summary pipeline is a part of the pipeline commonly used by the cold storage circuit 400 and the heat pipe circuit 300, and the summary pipeline is provided with a first branch and a second branch, That is to say, by arranging the summarizing pipeline, the setting of some pipelines can be reduced, and at the same time, the number of nozzles can also be reduced, which is more convenient in production, processing and assembly, and has a simple structure. The first branch is connected to the outdoor heat exchanger 21 and the compressor 22 in the cold storage host 5, and the second branch is connected to the air conditioner terminal 1, that is, the indoor heat exchanger. When the air conditioner cold storage system works normally, the second branch The internal circulating refrigerant is used for cooling the room or the machine room. When it is necessary to supplement the cooling capacity of the cold storage component 3 , the first branch is activated to cool down the cold storage liquid in the cooling circuit 200 . Further, a first control valve 23 and a second control valve 24 are respectively arranged on the first branch and the second branch, the first control valve 23 can control the conduction of the first branch, and the second control valve 24 can control For the conduction of the second branch, the first branch and the second branch can work at the same time, or can work separately and independently. According to the first control valve 23 and the second control valve 24, the conduction of the two branches is controlled according to the demand. That is, the control of the first control valve 23 and the second control valve 24 can control whether the cold storage circuit 400 and the cooling circuit 200 work, and further complete the cooling capacity of the cold storage assembly 3, and the structure is simple.

In the above embodiment, as shown in FIG. 1 , the cold storage assembly 3 further includes: a temperature sensor for detecting the temperature of the cold storage liquid; a cold storage control device for making the cold storage host 5 The cold storage circuit 400 is opened.

In this embodiment, the cold storage assembly 3 also includes a temperature sensor, and the temperature sensor can be arranged inside the cold storage assembly 3, that is, inside the cold storage tank, wherein the temperature sensor is arranged on the top of the cold storage tank, and there is a liquid stored in the cold storage tank. When the liquid storage volume reaches the maximum value, there is a part of space on the top of the cold storage tank, so the temperature sensor installed on the top of the cold storage tank does not directly contact with the cold storage liquid, and detects the air temperature in the cold storage tank to store cold The air temperature in the tank is used as the detection temperature. When the temperature sensor fails and needs to be replaced, the temperature sensor can be replaced without releasing the cold storage liquid in the cold storage tank, which is convenient for maintenance. Of course, it can also be installed at the bottom of the cold storage tank to detect the actual temperature of the cold storage liquid, and the detection result of the temperature sensor placed in the cold storage liquid is more accurate. When the temperature of the cool storage liquid is higher than the temperature threshold, the cool storage circuit 400 and the cooling circuit 200 are turned on to cool down the cool storage liquid.

Wherein, when the cold storage host 5 opens the cold storage circuit 400, the cold storage host 5 also serves as the outdoor unit 2, which can cool the room or the machine room. While the cold storage circuit 400 is cooling the cold storage liquid, the cold storage host 5 can also cool the air conditioner terminal 1 , and the cooling mode and the cold storage mode can be operated simultaneously. Of course, in order to quickly complete the cooling of the cold storage liquid, only one of the cold storage mode and the cooling mode of the cold storage host 5 can be run independently.

In the above embodiment, the temperature threshold is greater than or equal to 15.5°C.

In this embodiment, the temperature at which the cold storage liquid can be used as a backup cold source is generally 15°C. When the temperature of the cold storage liquid is greater than or equal to 15.5°C, the cold storage circuit 400 is opened, and the cold storage liquid in the cold storage assembly 3 is exchanged through the heat pipe heat exchange device 4. Cool to keep it at a temperature that can be used as a backup cooling source. By setting the temperature threshold, the cold storage fluid can be kept at a low temperature continuously, and it can be used as a backup cold source during a power outage to ensure the stability of the emergency supplementary cooling system. Of course, the normal temperature of the cold storage liquid is set according to the requirement, and the temperature threshold can also be set according to the normal temperature of the cool storage liquid.

In the above embodiment, as shown in Figures 1 and 2, the data center module multi-connected heat pipe air-conditioning and cold storage system further includes a cold pump device 6, including a first cold pump 61, which is arranged on the cooling circuit 200 for making the cooling circuit The coolant in 200 circulates.

In this embodiment, the air-conditioning cold storage system also includes a cold pump device 6, and the cold pump device 6 includes a first cold pump 61, which is arranged on the cooling circuit 200 with the cold storage assembly 3, and the cooling circuit 200 is driven by the first cold pump 61. The cold storage liquid in the cooling circuit 200 circulates, and at the same time, the first cold pump 61 can promote the circulation of the cold storage liquid in the cooling circuit 200 compared with the way without the cold pump, and can exchange heat through the heat pipe while the cold storage liquid flows rapidly The device 4 fully exchanges heat with the refrigerant in the cold storage circuit 400 , that is, the cold pump device 6 can accelerate the circulation of the cold storage liquid, and then rapidly cool the cold storage liquid.

In the above-mentioned embodiment, as shown in Figure 1 and Figure 2, the cold pump device 6 also includes a second cold pump 62, and the second cold pump 62 is arranged in parallel at both ends of the first cold pump 61; The cooling circuit 200 is turned on to cool the heat pipe circuit 300 , and the second cold pump 62 is turned on when the cooling circuit 200 stores cold.

In this embodiment, the cold pump device 6 also includes a second cold pump 62, and the second cold pump 62 is arranged in parallel with the first cold pump 61, that is, the second cold pump 62 is connected in parallel at both ends of the first cold pump 61, wherein , the first cold pump 61 is used for the cooling circuit 200 to release cold energy to the heat pipe heat exchanger, and the heat pipe heat exchanger cools down the refrigerant liquid in the heat pipe circuit 300, thereby completing the cooling of the room or the machine room. The second cold pump 62 is turned on when the cooling circuit 200 needs to replenish the cooling capacity. By setting the second cold pump 62, the flow of the cold storage liquid in the cooling circuit 200 can be accelerated, so that the cold storage liquid can fully exchange heat and quickly realize the cooling of the cold storage liquid. Of course, the first cold pump 61 and the second cold pump 62 can also be turned on at the same time when simply supplementing the cooling capacity and releasing the cooling capacity. The cold storage liquid in the cooling circuit 200 circulates faster, which speeds up the cooling or supplementary cooling capacity of the room or machine room, which can be set according to actual needs.

In the above embodiment, as shown in FIG. 1 and FIG. 2 , the cold storage assembly 3 further includes: a battery for powering the cold pump device 6 .

In this embodiment, the cold storage assembly 3 also includes a battery. When the emergency supplementary cooling mode starts, most of the situations are powered off. Therefore, the cold pump device 6 needs an additional power source, and the cold pump device 6 is powered by a battery. Power supply, to ensure that it can also be used normally during power outages.

Embodiment two

As shown in Figures 1 and 2, a third control valve 202 is provided on the cooling circuit 200 to control the opening and closing of the cooling circuit 200; or a fourth control valve 204 is provided on the cooling circuit 200 to control the second cold pump The opening and closing of the branch where the first cold pump 62 is located; the cooling circuit 200 is provided with a fifth control valve 206 to control the opening and closing of the branch where the first cold pump 61 is located.

In this embodiment, a third control valve 202 is provided on the cooling circuit 200. The third control valve 202 can control the opening and closing of the cooling circuit 200. When the air-conditioning cold storage system is working normally, and the cold storage liquid is also at a low temperature to meet the working conditions conditions, at this time, the third control valve 202 is closed, setting the third control valve 202 can effectively prevent the flow of the cold storage liquid in the cooling circuit 200, and reduce the flow of the cold storage liquid when the cold storage component 3 is not required to release the cooling capacity, thereby Reduce the cooling loss of cold storage liquid.

Embodiment three

As shown in Figures 1 and 2, a fourth control valve 204 is provided on the cooling circuit 200 to control the opening and closing of the branch where the second cold pump 62 is located, and a fifth control valve 206 is provided in the cooling circuit 200, Controlling the opening and closing of the branch where the first cold pump 61 is located. The first cold pump 61 and the second cold pump 62 are provided with control valves on their respective branches, through the fourth control valve 204 and the fifth control valve 206 to further reduce the flow of cold storage liquid, and release the cooling capacity when the cold storage assembly 3 is not needed , reduce the loss of cooling capacity of the cold storage fluid.

In any of the above embodiments, the heat pipe heat exchange device 4 includes a water-fluorine heat exchanger.

In this embodiment, the heat pipe heat exchange device 4 includes a water-fluorine heat exchanger, wherein the water-side pipeline in the water-fluorine heat exchanger is connected to the cooling circuit 200, and the fluorine-side pipeline (refrigerant) in the water-fluorine heat exchanger Pipeline) is connected to the cold storage pipeline, and the water fluorine heat exchanger is used as the heat pipe heat exchange device 4 with high heat exchange efficiency, which speeds up the cooling capacity of the cold storage component 3.

The data center module multi-connected heat pipe air-conditioning cold storage system also includes a control device, which is used to control the operation of the refrigeration circuit 100 in the power-on state for refrigeration; in the power-off state, control the operation of the cooling circuit 200 and the heat pipe circuit 300 to Cooling is performed by heat pipe circuit 300 .

Further, the control device is also used to control the operation of the cold storage circuit 400 and the cooling circuit 200 in the power-on state and the temperature of the cold storage liquid in the cold storage assembly is greater than the temperature threshold, so as to flow into the cold storage assembly 3 through the cold storage circuit 400 and the cooling circuit 200 store cold.

Embodiment three

As shown in Figure 3, the data center module multi-connected heat pipe air-conditioning cold storage system control method provided by the present invention is used for the data center module multi-connected heat pipe air-conditioning cold storage system provided in the first aspect. The control method includes:

S302, in the power-on state, control the operation of the refrigeration circuit to perform refrigeration;

S304. In the power-off state, control the operation of the cooling circuit and the heat pipe circuit, so as to perform refrigeration through the heat pipe circuit.

As shown in Figure 4, the above control method also includes:

S402, in the power-on state, control the operation of the refrigeration circuit to perform refrigeration;

S404, in the power-off state, control the operation of the cooling circuit and the heat pipe circuit, so as to perform cooling through the heat pipe circuit;

S406, in the power-on state and when the temperature of the cold storage liquid in the cold storage component is greater than the temperature threshold, control the operation of the cold storage circuit and the cooling circuit, so as to store cold in the cold storage component through the cold storage circuit and the cooling circuit.

Specifically, first, obtain the temperature of the cold storage liquid; then, judge whether the temperature of the cold storage liquid is higher than the temperature threshold, when the temperature of the cold storage liquid is greater than or equal to the temperature threshold, open the first control valve, close the second control valve, and start the cold storage circuit, open the cold pump device, the third control valve, the fourth control valve and the fifth control valve, start the cooling circuit; when the temperature of the cold storage liquid drops below the temperature threshold, close the first control valve, close the cold storage The pump unit, the third control valve, the fourth control valve and the fifth control valve close the cooling circuit.

That is to say, in the power-on state, the cold storage host has two working modes. Specifically, according to whether the temperature of the cold storage liquid meets the cold storage requirements, it is divided into a cold storage mode and a cooling mode. Among them, if the temperature of the cold storage liquid does not meet the cold storage requirements, Then start the cold storage mode. The cold storage mode is to store cold for the cold storage components, and store the cold energy in the cold storage liquid for use in emergency supplementary cooling. If the temperature of the cold storage liquid meets the cold storage requirements, the cooling mode is started. The cooling mode is to cool the end of the air conditioner, that is, the cold storage host can cool the room or the machine room like a refrigeration host.

In the power-off state, the refrigeration host and the cold storage host are all powered off and unable to work. At this time, the cooling circuit and the heat pipe circuit are started to cool the air conditioner terminal through the cold storage component. This kind of control method is simple, and the control cost is low. It only needs a few control valves, pipelines and cold storage components.

Embodiment Four

As shown in Figure 1 and Figure 2, the data center module multi-connected heat pipe air-conditioning and cold storage system provided by the present invention is an air-conditioning and cold storage system for data centers that uses air-cooled cold sources for mechanical refrigeration. The cold energy is stored in the outdoor cold storage tank. When an accident or power failure occurs in the data room, the cold energy stored in the cold storage tank will be released and transferred to the end of the air conditioner through the water-fluorine heat exchanger. The cold storage system of the air conditioner is composed of a refrigeration main unit, a cold pump device 6 (cool storage pump, a cold release pump), a cold storage component 3 (open type, closed type cold storage tank), a heat pipe heat exchange device 4 (water fluorine heat exchanger), and a valve tube road system and control system.

Wherein, the cold storage host 5 in the air-conditioning cold storage system is assumed by the backup host in the data room, and there is no need to add a new cold storage unit. The water fluorine heat exchange device uses a plate or shell-and-tube heat exchanger as the heat pipe heat exchange device 4 between the module multi-connected heat pipe refrigeration host and the water cold storage. When storing cold, the cooling capacity is transferred from the fluorine side to the water side. , to transfer the cooling from the water side to the fluorine side.

In addition, the air-conditioning cold storage system is also equipped with a water pump as a cold pump device 6 for delivering cold capacity, which is divided into a cold storage pump and a cooling pump, and the cooling pump is equipped with an uninterrupted power supply. When storing cold, turn on the cold storage pump for cold storage; when releasing cold, turn off the cold storage pump and turn on the cold release pump. A water cold storage tank is set as the cold storage component 3 for storing cold energy, which can be an outdoor closed tank or an open tank, and the cold storage time is not less than 15 minutes.

The air-conditioning cold storage system is also equipped with a pipeline system for the delivery of cooling capacity, and a valve system for switching between various operating state points to ensure that the emergency system can transfer and deliver cold capacity according to the set route.

The system of the present invention is equipped with an intelligent control system to precisely control the emergency system, and the control system is equipped with an uninterrupted cooling power supply to ensure the normal operation of the emergency system in the event of an accident.

Cold storage control scheme: the system usually starts the standby main engine for refrigeration, starts the second cold pump, and opens the first control valve 23, the third control valve 202 and the fourth control valve 204 in linkage. The second control valve 24 and the fifth control valve 206 are kept closed to store cold for the whole system without affecting the operation of other main hosts.

When the return water temperature reaches the cold storage set value (the conventional set value is 15°C, adjustable), stop the operation of the standby main engine and stop the cold storage. When it is detected that the water temperature in the cold storage tank is higher than 15.5°C (adjustable), the standby host is turned on for cold storage and charging.

Cooling control scheme: In an emergency state, close the third control valve 202 and the fourth control valve 204, open the first control valve 23, the second control valve 24 and the fifth control valve 206, start the first cold pump, and perform emergency supplementary cooling. cold.

After supplementary cooling is completed, the first cooling pump is turned off, the fifth control valve 206 is closed, and emergency supplementary cooling is stopped. Start the second cold pump, open the first control valve 23, the third control valve 202 and the fourth control valve 204 in linkage, close the second control valve 24 and the fifth control valve 206, and turn on the standby host for cold storage.

In the description of this manual, the terms "connection", "installation" and "fixation" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly or indirectly through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the description of this specification, descriptions of the terms "one embodiment", "some embodiments", "specific embodiments" and the like mean that specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in the present invention In at least one embodiment or example of . In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A data center module multi-connected heat pipe air-conditioning cold storage system, characterized in that it comprises: Air conditioner terminal; At least two outdoor units, each of which includes an outdoor heat exchanger and a compressor, and each of the outdoor heat exchangers is connected to the compressor and the air-conditioning terminal to form a refrigeration circuit; A cold storage component for storing cold storage liquid; At least two heat pipe heat exchange devices, each heat pipe heat exchange device includes a first pipeline and a second pipeline, both ends of the first pipeline communicate with both ends of the cold storage assembly to form a cooling circuit , the second pipeline is connected to the end of the air conditioner to form a heat pipe loop. 2. The data center module multi-connected heat pipe air-conditioning cold storage system according to claim 1, wherein at least one of the outdoor units includes a cold storage host, and the data center module multi-connected heat pipe air-conditioning cold storage system further comprises: The cold storage pipeline is used to form a cold storage circuit with the second pipeline, the outdoor heat exchanger of the cold storage main engine, and the compressor, and the cold storage circuit can exchange heat with the cooling circuit, so that all The above cooling circuit stores cold. 3. The data center module multi-connected heat pipe air-conditioning cold storage system according to claim 2, characterized in that, The cold storage pipeline includes a summary pipeline connected to the second pipeline, a first branch and a second branch are arranged on the summary pipeline, and the first branch and the cold storage host The outdoor heat exchanger is connected to the compressor, and the second branch is used to connect the second pipeline to the end of the air conditioner to form a heat pipe loop; The first branch is provided with a first control valve capable of opening and closing, and the second branch is provided with a second control valve capable of opening and closing. 4. The data center module multi-connected heat pipe air-conditioning cold storage system according to claim 2, wherein the cold storage component further comprises: A temperature sensor, used to detect the temperature of the cold storage liquid; The cold storage control device is configured to open the cold storage circuit of the cold storage host when the temperature of the cold storage liquid is higher than a temperature threshold. 5. The data center module multi-connected heat pipe air-conditioning cold storage system according to claim 1, further comprising: The cold pump device includes a first cold pump, which is arranged on the cooling circuit and is used to circulate the cooling liquid in the cooling circuit. 6. The data center module multi-connected heat pipe air-conditioning cold storage system according to claim 5, characterized in that, The cold pump device further includes a second cold pump, and the second cold pump is arranged in parallel at both ends of the first cold pump; The first cold pump is used to turn on when the cooling circuit cools down the heat pipe circuit, and the second cold pump is used to turn on when the cooling circuit stores cold. 7. The data center module multi-connected heat pipe air-conditioning cold storage system according to claim 5 or 6, wherein the cold storage component further comprises: A battery is used to supply power to the cold pump device. 8. The data center module multi-connected heat pipe air-conditioning cold storage system according to claim 6, characterized in that, A third control valve is provided on the cooling circuit to control the opening and closing of the cooling circuit; or A fourth control valve is provided on the cooling circuit to control the opening and closing of the branch circuit where the second cold pump is located; A fifth control valve is provided on the cooling circuit to control the opening and closing of the branch circuit where the first cold pump is located. 9. A control method for a data center module multi-connected heat pipe air-conditioning cold storage system, characterized in that it is used for the data center module multi-connected heat pipe air-conditioning cold storage system described in any one of claims 1 to 8, and the control method includes : In the power-on state, control the operation of the refrigeration circuit to perform refrigeration; In a power-off state, the cooling circuit and the heat pipe circuit are controlled to operate, so as to perform refrigeration through the heat pipe circuit. 10. The control method of the data center module multi-connected heat pipe air-conditioning cold storage system according to claim 9, wherein the data center module multi-connected heat pipe air-conditioning cold storage system includes a cold storage circuit, and the control method comprises: In the power-on state and when the temperature of the cold storage liquid in the cold storage component is greater than the temperature threshold, control the operation of the cold storage circuit and the cooling circuit, so as to store cold in the cold storage component through the cold storage circuit and the cooling circuit .

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