CN219868265U - Water-cooled air conditioning system - Google Patents

Abstract

The utility model provides a water-cooled air conditioning system, relates to the technical field of air conditioning, and is used for solving the technical problem that an outdoor unit of the air conditioning system frequently generates high-temperature and high-pressure alarms. The water-cooled air conditioning system includes: an outdoor water circulation system with a cooling tower, a water inlet pipeline and a water outlet pipeline, a multi-split air conditioner tail end system comprising a first indoor unit, a liquid separating tank and a gas collecting tank, and a first heat exchanger. One end of the water inlet pipeline and one end of the water outlet pipeline are respectively communicated with the cooling tower; the liquid separating tank comprises: the liquid outlets are communicated with the first indoor units one by one; the gas collection tank includes: the air inlets are communicated with the first indoor units one by one; the first heat exchanger includes: an outdoor first inlet communicated with the water inlet pipeline, an outdoor first outlet communicated with the water outlet pipeline, an indoor first inlet communicated with the air outlet and an indoor first outlet communicated with the liquid inlet.

Description

Water-cooled air conditioning system

Technical Field

The utility model relates to the technical field of air conditioners, in particular to a water-cooled air conditioning system.

Background

At present, a unit air conditioner unit is adopted in a machine room, and an outdoor unit of the unit air conditioner unit dissipates heat in an air cooling mode and is placed on a top building roof or mounted on an outer wall elevation.

With the innovation and development of distributed computing architecture services such as artificial intelligence, cloud computing and big data, the service equipment of the machine room is gradually increased, and the heat dissipation capacity of the machine room is continuously increased, so that the number of outdoor units required by refrigeration of the machine room is also continuously increased. The outdoor unit gradually has no space due to the limitation of space resources, so that the capacity expansion of the service equipment of the machine room is severely limited.

In addition, the outdoor unit is tightly installed due to the limitation of space resources. Therefore, the outdoor unit has smaller heat dissipation space, and heat is accumulated by the heat island effect formed locally, so that the heat dissipation of the air conditioning system is affected. Especially in summer, the air conditioning system often can appear the off-premises station temperature and be high enough problem of heat dissipation when the operation, leads to the temperature and the pressure of the refrigerant in the off-premises station to be great, causes the off-premises station to send out high temperature high pressure warning frequently, influences the steady operation of computer lab.

Disclosure of Invention

The utility model provides a water-cooled air conditioning system, which is used for solving the technical problem that when air conditioning outdoor units of the air conditioning system are densely arranged, local heat islands appear at the positions of the air conditioning outdoor units, so that the condensing pressure of the air conditioning outdoor units is higher than an alarm set value, and high-temperature and high-pressure alarms frequently occur to the air conditioning system.

The present utility model provides a water-cooled air conditioning system, comprising: outdoor water circulation system, many online air conditioner end system and first heat exchanger, this outdoor water circulation system includes: the cooling tower, the water inlet pipeline and the water outlet pipeline, wherein one end of the water inlet pipeline and one end of the water outlet pipeline are respectively communicated with the cooling tower; the multi-split air conditioner end system comprises: a plurality of first indoor units, at least one liquid separating tank and a gas collecting tank; the liquid separating tank comprises: the liquid outlets are communicated with the first indoor units one by one; the gas collection tank includes: the air inlets are communicated with the first indoor units one by one; the first heat exchanger includes: the first water flow path, the first refrigerant flow path, an outdoor first inlet communicated with the water inlet pipeline, an outdoor first outlet communicated with the water outlet pipeline, an indoor first inlet communicated with the air outlet and an indoor first outlet communicated with the liquid inlet, wherein one end of the first water flow path is communicated with the outdoor first inlet, and the other end of the first water flow path is communicated with the outdoor first outlet; one end of the first refrigerant flow path is communicated with the indoor first inlet, and the other end of the first refrigerant flow path is communicated with the indoor first outlet, and the first heat exchanger is used for exchanging heat between heat generated by a plurality of first indoor units and cooling water in the outdoor water circulation system.

The water-cooled air conditioning system provided by the utility model comprises: outdoor water circulation system, many online air conditioner end system and first heat exchanger, wherein, this outdoor water circulation system includes: the cooling tower is respectively communicated with the water inlet pipeline and the water outlet pipeline, and the other ends of the water inlet pipeline and the water outlet pipeline are communicated with the first heat exchanger to form a circulation loop. In addition, the multi-split air conditioner end system includes: a plurality of first indoor units, at least one liquid separating tank and a gas collecting tank; the liquid separating tank comprises: the liquid outlets are communicated with the first indoor units one by one; the gas collection tank includes: the air inlets are communicated with the first indoor units one by one.

Furthermore, the first heat exchanger includes: the first heat exchanger is used for exchanging heat between heat generated by a plurality of first indoor units and cooling water in the outdoor water circulation system. Therefore, the first heat exchanger can be used as a condenser in the multi-split air conditioner, and the condenser takes away the heat transferred from the plurality of indoor units to the first heat exchanger through an outdoor water circulation system (namely water cooling), compared with the air-cooled heat dissipation of the outdoor unit in the related art, the outdoor water circulation system can bring the heat on the indoor side to a cooling tower for heat dissipation, and heat accumulation near the first heat exchanger is avoided, so that a heat island effect is formed. Thereby solving the technical problem of frequent high-temperature and high-pressure alarm of the outdoor unit of the air conditioning system. Therefore, when the water-cooled air conditioning system provided by the utility model is adopted in the machine room, the running stability of the machine room can be ensured.

In addition, compared with the air-cooled heat dissipation of the unit air conditioner unit in the related art, the plurality of first indoor units are sequentially connected with the first heat exchanger in parallel, and the heat on the indoor side is dissipated through the outdoor water circulation system, so that when the water-cooled air conditioner system provided by the utility model is adopted in a machine room, a large number of outdoor units are not required to be arranged, and the expansion of service equipment of the machine room is prevented from being limited by space resources.

In one possible implementation manner, each of the plurality of first indoor units includes: and the heat pipe type heat exchanger is communicated with the liquid outlet and the air inlet. Because the heat pipe type heat exchanger directly exchanges heat with the inside of the machine room through the heat pipe, high-energy-consumption components such as a compressor and the like are not required to be arranged, the heat pipe type heat exchanger can fully utilize the cold energy (namely a natural cold source) provided by the outdoor water circulation system, thereby reducing the energy consumption of the air conditioning system of the communication machine room, and further reducing the integral PUE value of the machine room.

In one possible implementation, the water-cooled air conditioning system further includes: a compression air conditioning end system, the compression air conditioning end system comprising: a second indoor unit having a compressor and a second heat exchanger, the second heat exchanger comprising: the second water flow path, the second refrigerant flow path, the outdoor second inlet communicated with the water inlet pipeline, the outdoor second outlet communicated with the water outlet pipeline, the indoor second inlet communicated with the second indoor unit and the indoor second outlet communicated with the second indoor unit, one end of the second water flow path is communicated with the outdoor second inlet, and the other end of the second water flow path is communicated with the outdoor second outlet; one end of the second refrigerant flow path is communicated with the indoor second inlet, and the other end of the second refrigerant flow path is communicated with the indoor second outlet.

The second heat exchanger is used for exchanging heat between the heat generated by the second indoor unit and cooling water in the outdoor water circulation system. Therefore, when the heat pipe type heat exchanger of the multi-split air conditioner tail end system cannot meet the heat exchange (cooling) requirement of the communication machine room, the second indoor unit (i.e. the indoor unit with the compressor) can cool the communication machine room, so that the operation requirement of equipment in the communication machine room is met.

In one possible implementation, the outdoor water circulation system further includes: and the water pump is arranged on the water inlet pipeline and is used for conveying cooling water in the cooling tower along the water inlet pipeline from the cooling tower to the water pump. In this way, the water pump can convey the cooling water in the cooling tower to the first heat exchanger, and the flow rate of the cooling water in the circulating pipeline (namely the water inlet pipeline and the water outlet pipeline) is improved.

In one possible implementation, the first heat exchanger and the second heat exchanger are both shell and tube water-fluorine heat exchangers. Because the shell and tube type water-fluorine heat exchanger has the characteristics of high heat transfer efficiency, simple structure and the like, the heat exchange efficiency of the outdoor water circulation system and the multi-split air conditioner tail end system can be ensured.

In one possible implementation, the outdoor water circulation system further includes: the first water supply loop and the first water outlet loop are annular circulating pipelines, the first water supply loop is arranged on the water inlet pipeline and is positioned between the water pump and the cooling tower, and the first water outlet loop is arranged between the cooling tower and the outdoor first outlet. Thus, when a certain position in the first water supply loop is blocked, the cooling water can flow into the first heat exchanger along the other side of the first water supply loop, and when a certain position of the first water outlet loop is blocked, the cooling water can flow into the cooling tower along the other side of the first water outlet loop, so that the reliability of the water supply and return water of the water-cooled air conditioning system is improved.

In one possible implementation, the water inlet line is in communication with a first heat exchanger and a second heat exchanger, respectively, the first heat exchanger and the second heat exchanger being arranged in parallel between the water inlet line and the water outlet line. Therefore, the water inlet pipeline is respectively communicated with the first heat exchanger and the second heat exchanger, so that the situation that the temperature of cooling water flowing into the second heat exchanger is higher due to serial connection can be avoided, and a high-pressure warning occurs to the tail end system of the compression type air conditioner. In addition, when the multi-split air conditioner end system does not work and the compression type refrigeration air conditioner end system works, the problem that the cooling water flow resistance is increased due to the fact that the first heat exchanger and the second heat exchanger are connected in series can be avoided.

In one possible implementation, the outdoor water circulation system further includes: and the first flow regulating valve is arranged at the position, close to the outdoor first inlet, of the water inlet pipeline and is used for controlling the flow of the cooling water flowing into the first heat exchanger. Therefore, the flow rate of the cooling water entering the first heat exchanger can be controlled through the first flow regulating valve, so that fine control is realized.

In one possible implementation, the outdoor water circulation system further includes: and the second flow regulating valve is arranged at the position, close to the outdoor second inlet, of the water inlet pipeline and is used for controlling the flow of the cooling water flowing into the second heat exchanger. Therefore, the flow rate of the cooling water entering the second heat exchanger can be controlled through the second flow rate regulating valve, so that fine control is realized. Particularly, when the compression type air conditioner end system is operated, the second flow regulating valve is used for ensuring that the condensation temperature is in a preset range, so that the air conditioner can be prevented from being stopped and protected due to low or high condensation pressure caused by the excessively high or excessively low condensation temperature.

In one possible implementation, the water-cooled air conditioning system further includes: a temperature detector for detecting the temperature of the cooling water flowing out of the cooling tower; a controller electrically connected to each of the temperature detector, the first flow regulating valve, and the second flow regulating valve, and configured to: when the temperature of the cooling water is smaller than a first preset value, the first flow regulating valve is controlled to be opened, and the second flow regulating valve is controlled to be closed; when the temperature of the cooling water is obtained to be larger than a second preset value, the second flow regulating valve is controlled to be opened, the first flow regulating valve is controlled to be closed, and the second preset value is larger than the first preset value. When the temperature of the cooling water is larger than or equal to a first preset value and smaller than or equal to a second preset value, the first flow regulating valve and the second flow regulating valve are controlled to be opened. Therefore, the possibility of utilizing natural cold sources by the water-cooled air conditioning system can be improved, the PUE value of a communication machine room is effectively reduced, and the power, energy and carbon are saved.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate and do not limit the utility model.

FIG. 1 is a schematic diagram of a water-cooled air conditioning system according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a water-cooled air conditioning system according to a second embodiment of the present utility model;

fig. 3 is a schematic circuit connection diagram of a water-cooled air conditioning system according to an embodiment of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. In addition, when describing a pipeline, the terms "connected" and "connected" as used herein have the meaning of conducting. The specific meaning is to be understood in conjunction with the context.

In embodiments of the utility model, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

Along with the continuous development of communication technology, communication equipment room is along with the continuous dilatation of business and the update transformation of basic supporting, and the communication equipment consumption in the computer lab is the rising constantly, and the air conditioning system in the computer lab needs to provide suitable operating temperature for the communication equipment in the computer lab to air conditioning system needs the continuous increase.

With the continuous expansion of the air conditioning system, the outdoor units of the communication machine room are placed more and more densely, and in summer, the densely arranged outdoor units discharge heat in the communication machine room, so that a local heat island effect is easily caused, the condensing pressure of the outdoor units is higher than an alarm set value, and the air conditioning is stopped in a high-pressure protective manner. Thus, the communication equipment in the communication machine room cannot normally operate, and even fire disasters can occur due to the fact that the temperature of the communication equipment is too high.

The utility model provides a water-cooled air conditioning system which is used for solving the technical problem that the air conditioning outdoor unit of a communication machine room in the related technology is easy to generate a heat island effect in summer due to dense arrangement, so that high-pressure warning of air conditioning equipment is realized.

Fig. 1 shows a schematic diagram of a portion of a water-cooled air conditioning system according to an embodiment of the present utility model, and as shown in fig. 1, the water-cooled air conditioning system 100 may include: an outdoor water circulation system 10, a multi-split air conditioner end system 20, and a first heat exchanger 30.

Fig. 2 is a schematic diagram of another part of a water-cooled air conditioning system according to an embodiment of the present utility model, as shown in fig. 1 and 2, a port a in fig. 1 is communicated with a port a in fig. 2, a port B in fig. 1 is communicated with a port B in fig. 2, a port C in fig. 1 is communicated with a port C in fig. 2, and a port D in fig. 1 is communicated with a port D in fig. 2, so as to form the water-cooled air conditioning system 100 according to the present utility model. The port connection descriptions of fig. 1 and 2 above are merely used to illustrate the communication relationship between the components of fig. 1 and 2, and do not constitute a specific limitation of the present utility model.

As shown in fig. 1 and 2, the outdoor water circulation system 10 may include: a cooling tower 11, an inlet pipe 12 and an outlet pipe 13, the cooling tower 11 comprising: an inlet 111 and an outlet 112, wherein one end of the water inlet pipe 12 communicates with the outlet 112 and one end of the water outlet pipe 13 communicates with the inlet 111.

It is understood that the cooling tower 11 is a device for absorbing heat from a system (i.e., the multi-split air conditioner end system 20 of the present utility model) as a circulating coolant and discharging the heat to the atmosphere to reduce the water temperature.

That is, the temperature of the cooling water flowing into the cooling tower 11 from the water outlet pipe 13 is high, and heat exchange is performed with the outdoor air in the cooling tower 11 so that the cooling water having a high temperature becomes supercooled cooling water, and the supercooled cooling water flows out through the water outlet pipe 13.

The water inlet pipeline 12 and the water outlet pipeline 13 can be metal waterways, plastic water pipes, aluminum-plastic composite water pipes and the like, and the materials of the water inlet pipeline 12 and the water outlet pipeline 13 are not limited.

In addition, the multi-split air conditioning terminal system 20 includes: at least one liquid separation tank 21, a gas collection tank 22 and a plurality of first indoor units 23. The liquid separation tank 21 includes: the liquid outlets are in one-to-one correspondence with and are communicated with the first indoor units. The gas collection tank 22 includes: the plurality of air inlets and the at least one air outlet are in one-to-one correspondence and communication with the plurality of first indoor units 23. That is, as shown in fig. 1, one end of the first indoor unit 23 communicates with one of the liquid inlets of the liquid separation tank 21, and the other end of the first indoor unit 23 communicates with one of the air inlets of the air collection tank 22.

Further, the first heat exchanger 30 includes: a first water flow path, a first refrigerant flow path, an outdoor first inlet 31, an outdoor first outlet 32, an indoor first inlet, and an indoor first outlet. Wherein, one end of the first water flow path is communicated with the outdoor first inlet 31, the other end is communicated with the outdoor first outlet 32, one end of the first refrigerant flow path is communicated with the indoor first inlet, and the other end is communicated with the indoor first outlet. The cooling water flowing through the first water passage in the first heat exchanger 30 can exchange heat with the refrigerant flowing through the first refrigerant passage. The outdoor first inlet 31 is communicated with the other end of the water inlet pipeline 12; the outdoor first outlet 32 communicates with the other end of the water outlet pipe 13, so that the outdoor water circulation system 10 constitutes a circulation loop. The first indoor inlet is communicated with the air outlet of the air collection tank 22, and the first indoor outlet is communicated with the liquid inlet, so that the multi-split air conditioner end system 20 also forms a circulation loop, and the first heat exchanger 30 is used for exchanging heat between the refrigerant in the circulation loop of the multi-split air conditioner end system 20 and the cooling water in the circulation loop of the outdoor water circulation system 10, namely, heat generated by the plurality of first indoor units 23 and the cooling water in the outdoor water circulation system 10.

The water-cooled air conditioning system 100 provided in the embodiment of the utility model includes: an outdoor water circulation system 10, a multi-split air conditioner end system 20, and a first heat exchanger 30, wherein the outdoor water circulation system 10 includes: the cooling tower 11 is respectively communicated with the water inlet pipeline 12 and the water outlet pipeline 13, and the other ends of the water inlet pipeline 12 and the water outlet pipeline 13 are communicated with the first heat exchanger 30 to form a circulation loop. That is, the water cooling water cooled by the cooling tower 11 flows into the first water flow path through the water inlet pipe 12 and the outdoor first inlet 31, exchanges heat with the refrigerant in the first refrigerant flow path in the first water flow path, increases in temperature, and then flows back into the cooling tower 11 through the outdoor first outlet 32 and the water outlet pipe 13 in this order.

In addition, the multi-split air conditioning terminal system 20 includes: a plurality of first indoor units 23, at least one liquid separation tank 21, and at least one gas collection tank 22; the liquid separation tank 21 includes: the liquid outlets are communicated with the first indoor units 23 one by one; the gas collection tank 22 includes: a plurality of air inlets and at least one air outlet, the plurality of air inlets are in one-to-one communication with the plurality of first indoor units 23. That is, the gas collection tank 22 is configured to collect the refrigerant flowing out of the plurality of first indoor units 23, and the liquid separation tank 21 is configured to separate the liquid refrigerant flowing out of the first heat exchanger 30 into the plurality of first indoor units 23.

Further, the first heat exchanger 30 includes: an outdoor first inlet 31 communicated with the water inlet pipeline 12, an outdoor first outlet 32 communicated with the water outlet pipeline 13, an indoor first inlet communicated with the air outlet and an indoor first outlet communicated with the liquid inlet. That is, after the first indoor unit 23 exchanges heat with the indoor unit, the low-temperature liquid refrigerant in the first indoor unit 23 heats up and evaporates into a high-temperature gaseous refrigerant, the high-temperature gaseous refrigerant flows to the gas collecting tank 22 along the pipeline, enters the first refrigerant flow path through the gas outlet and the indoor first inlet, exchanges heat with supercooled cooling water in the first water flow path in the first refrigerant flow path, and is liquefied into a low-temperature liquid refrigerant, and the low-temperature liquid refrigerant flows back to the first indoor unit 23 through the indoor first outlet, the liquid inlet and the liquid outlet in sequence. In this way, the first heat exchanger 30 can be used as a condenser in the multi-split air conditioner end system 20, and the condenser takes away the heat transferred from the plurality of indoor units to the first heat exchanger 30 through the outdoor water circulation system 10 (i.e. water cooling), compared with the air-cooled heat dissipation of the outdoor unit in the related art, the outdoor water circulation system 10 of the embodiment of the utility model can bring the heat at the indoor side to the cooling tower 11 for heat dissipation, so as to avoid heat accumulation near the first heat exchanger 30, thereby forming a heat island effect. Thereby solving the technical problem of frequent high-temperature and high-pressure alarm of the outdoor unit of the air conditioning system. Thus, when the water-cooled air conditioning system 100 provided by the utility model is adopted in a machine room, the running stability of the machine room can be ensured.

In addition, compared to the air-cooled heat dissipation of the unit type air conditioning unit in the related art, the water-cooled air conditioning system 100 according to the embodiment of the present utility model has the plurality of first indoor units 23 connected in parallel with the first heat exchanger 30 in sequence, and dissipates the heat of the indoor side through the outdoor water circulation system 10. Thus, when the water-cooled air conditioning system 100 provided by the embodiment of the utility model is adopted in a machine room, a large number of outdoor units are not required to be arranged, and the limitation of space resources on the expansion of service equipment of the machine room is avoided.

In some embodiments, the plurality of first indoor units 23 each include: and the heat pipe type heat exchanger is communicated with the corresponding liquid outlet and air inlet. That is, the plurality of first indoor units 23 are each provided with a heat pipe type heat exchanger.

It will be appreciated that a heat pipe is a heat transfer component with high thermal conductivity, and that the structure of a heat pipe heat exchanger is different from other forms of heat exchangers. Heat pipe heat exchangers have some significant characteristics: the heat pipe type heat exchanger has the advantages of high heat transfer efficiency, compact structure, small heat exchange fluid resistance loss, flexible shape change, strong environmental adaptability and the like, and in addition, as the heat pipe type heat exchanger directly exchanges heat with the inside of the machine room through the heat pipe, the heat pipe type heat exchanger can fully utilize the cold energy (namely natural cold source) provided by the outdoor water circulation system 10, thereby reducing the energy consumption of an air conditioning system of the communication machine room, and further reducing the overall power utilization efficiency (power usage effectiveness, PUE) of the machine room.

Alternatively, the heat pipe heat exchanger may be an overhead heat pipe, alternatively, the heat pipe heat exchanger may be an inter-column heat pipe, which is not limited in the present utility model.

In some embodiments, as shown in fig. 1, the water-cooled air conditioning system 100 further comprises: a compression air conditioning end system, the compression air conditioning end system comprising: a second indoor unit 24 and a second heat exchanger 40, the second indoor unit 24 may include: a compressor, an indoor heat exchanger, a controller, etc.

It can be understood that the precise air conditioner of the machine room is a special air conditioner designed for the machine room of modern electronic equipment, and the working precision and reliability of the precise air conditioner are much higher than those of the common air conditioner. Computer equipment and program controlled exchange products are placed in a communication machine room, and the computer equipment and program controlled exchange products consist of a large number of dense electronic elements. To improve the stability and reliability of these devices, the temperature and humidity of the environment should be strictly controlled within a specific range. The communication machine room temperature and the relative humidity can be controlled to be plus or minus 1 ℃ by the machine room precise air conditioner, so that the service life and the reliability of the equipment are greatly improved. Therefore, the second indoor unit 24 of the present utility model can be a precise air-conditioning indoor unit of a machine room, so that the service life of equipment in the communication machine room and the operation stability of the communication machine room can be improved.

In addition, the second heat exchanger 40 may include: the second water flow path, the second refrigerant flow path, the outdoor second inlet, the outdoor second outlet, the indoor second inlet and the indoor second outlet. One end of the second water flow path is communicated with the outdoor second inlet, and the other end of the second water flow path is communicated with the outdoor second outlet; one end of the second refrigerant flow path is communicated with the indoor second inlet, and the other end of the second refrigerant flow path is communicated with the indoor second outlet. The cooling water flowing through the second water passage in the second heat exchanger 40 can exchange heat with the refrigerant flowing through the second refrigerant passage. The outdoor second inlet is communicated with the water inlet pipeline 12, the outdoor second outlet is communicated with the water outlet pipeline 13, the indoor second inlet is communicated with the second indoor unit 24, and the indoor second outlet is communicated with the second indoor unit 24. That is, as shown in fig. 1, one end of the second indoor unit 24 communicates with the indoor second inlet, and the other end of the second indoor unit 24 communicates with the indoor second outlet.

The second heat exchanger 40 is used for exchanging heat between the refrigerant generated by the second indoor unit 24 and the cooling water in the outdoor water circulation system 10. In this way, when the heat pipe type heat exchanger of the multi-split air conditioner end system 20 cannot meet the heat exchange (cooling) requirement of the communication machine room, the second indoor unit 24 (i.e. the indoor unit with the compressor) can cool the communication machine room, so as to meet the operation requirement of the equipment in the communication machine room.

Furthermore, in one possible implementation, the water inlet line 12 communicates with the first heat exchanger 30 and the second heat exchanger 40, respectively, the first heat exchanger 30 and the second heat exchanger 40 being connected in parallel. In this way, the water inlet pipeline 12 is respectively communicated with the first heat exchanger 30 and the second heat exchanger 40, so that the high temperature of the cooling water flowing into the second heat exchanger 40 caused by series connection (namely, series connection of the first heat exchanger 30 and the second heat exchanger 40) can be avoided, and a high-pressure warning can be generated in the end system of the compression type air conditioner. In addition, when the multi-split air conditioning terminal system 20 is not operated and the compression air conditioning terminal system is operated, the problem of increased cooling water flow resistance due to the series connection can be avoided.

It should be noted that the types of the first heat exchanger 30 and the second heat exchanger 40 may be the same or different, and the first heat exchanger 30 and the second heat exchanger 40 may be configured according to the actual situation, which is not limited in the present utility model.

In one possible implementation manner, the first heat exchanger 30 and the second heat exchanger 40 may be shell-and-tube heat exchangers, where the shell-and-tube heat exchangers mainly include a shell, a tube bundle, a tube plate, and an end enclosure, the shell is mostly circular, a parallel tube bundle or a spiral tube is installed in the shell, and two ends of the tube bundle are fixed on the tube plate. Two fluids which exchange heat in the shell-and-tube heat exchanger, one fluid flows in the tube, and the stroke of the fluid is called tube side; flow outside the tube, the travel of which is called the shell side. The wall of the tube bundle is the heat transfer surface. The shell-and-tube heat exchanger can furthest increase turbulence effect due to the design of the spiral tube bundle, thereby increasing heat exchange efficiency.

Alternatively, the first heat exchanger 30 and the second heat exchanger 40 may be shell and tube type water-fluorine heat exchangers. That is, the refrigerant circulated in the outdoor water circulation system 10 is water, and the refrigerant circulated in the multi-split air conditioner end system 20 and the compression air conditioner end system is fluorine. The first heat exchanger 30 transfers heat in the communication room to the outdoor water circulation system 10 by exchanging heat between the circulating water in the outdoor water circulation system 10 and fluorine in the end system of the compression type air conditioner, and spreads the heat in the outdoor air through the cooling tower 11 of the outdoor water circulation system 10.

In another possible implementation, the first heat exchanger 30 and the second heat exchanger 40 may be plate heat exchangers, which are high efficiency heat exchangers formed by stacking a series of metal sheets having a corrugated shape. Thin rectangular channels are formed between the various plates through which heat is exchanged. The plate heat exchanger is ideal equipment for liquid-liquid and liquid-vapor heat exchange. The heat exchanger has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small occupied area, wide application, long service life and the like.

In some embodiments, as shown in fig. 1, the outdoor water circulation system 10 further includes: a water pump 14, the water pump 14 is arranged on the water inlet pipeline 12, and is used for conveying the cooling water in the cooling tower 11 along the water inlet pipeline from the cooling tower to the water pump.

The water pump 14 is a mechanism for delivering or pressurizing a liquid. It transmits mechanical energy of the prime mover or other external energy to the liquid, causing the liquid to increase in energy. In this way, the present utility model can increase the flow rate of the cooling water in the circulation line (i.e., the water inlet line 12 and the water outlet line 13) by providing the water pump 14 on the water inlet line 12, which can feed the cooling water in the cooling tower 11 to the first heat exchanger 30.

To improve the reliability of the return water of the outdoor water circulation system of the water-cooled air conditioning system 100, in some embodiments, as shown in fig. 2, the outdoor water circulation system 10 further includes: the first water supply loop 15 and the first water outlet loop 16 are annular circulation pipelines, the first water supply loop 15 is arranged on the water inlet pipeline 12 and is positioned between the water pump 14 and the cooling tower 11, and the first water outlet loop 16 is arranged between the cooling tower 11 and the outdoor first outlet 32.

As such, when a certain position in the first water supply loop 15 is blocked, the cooling water may flow into the first heat exchanger 30 along the other side of the first water supply loop 15, and when a certain position of the first water outlet loop 16 is blocked, the cooling water may flow into the cooling tower 11 along the other side of the first water outlet loop 16. That is, when the clogging occurs at M of the first water outlet loop 16 in fig. 2, the cooling water can flow into the cooling tower through N of the first water outlet loop 16, thereby improving the reliability of the water supply and return of the water-cooled air conditioning system 100.

In yet other embodiments, as shown in fig. 1, the outdoor water circulation system 10 further includes: a second water supply loop 17 and a second water outlet loop 18, the second water supply loop 17 being arranged on the water inlet line 12 between the water pump 14 and the outdoor first inlet 31, the second water outlet loop 18 being arranged between the first water outlet loop 16 and the outdoor second outlet. That is, when a blockage occurs at X of the second water supply loop 17 in fig. 1, the cooling water may flow into the first heat exchanger 30 and/or the second heat exchanger 40 through Y of the second water supply loop 17. In this way, the reliability of the water supply and return of the water-cooled air conditioning system 100 can be further improved.

Optionally, the water-cooled air conditioning system 100 includes: a plurality of indoor air conditioning end systems, any one of which may include: the multi-split air conditioning terminal system 20, the first heat exchanger 30, and the compression air conditioning terminal system described above. The first heat exchanger 30 and the second heat exchanger 40 of either indoor air conditioning end system are in communication with the second water supply loop 17 and the second water outlet loop 18. Thus, the outdoor water circulation system 10 can provide cooling capacity for a plurality of indoor air conditioning end systems so as to take away heat in the communication machine room and meet the operation requirements of equipment in the communication machine room.

Illustratively, as shown in fig. 1, the water-cooled air conditioning system 100 includes: the first heat exchanger 30 and the second heat exchanger 40 of the two indoor air conditioning end systems are both in communication with the second water supply loop 17 and the second water outlet loop 18.

To ensure that the cooling capacity of the outdoor water circulation system 10 is sufficient when the outdoor water circulation system 10 supplies cooling capacity to a plurality of indoor air conditioning end systems, in some embodiments, the outdoor water circulation system 10 includes: a plurality of cooling towers 11, each cooling tower 11 is communicated with the first water supply loop and the first water outlet loop. In this way, the cooling capacity of the outdoor water circulation system 10 can be ensured to be sufficient.

Illustratively, as shown in fig. 2, the outdoor water circulation system 10 includes: three cooling towers 11, the three cooling towers 11 are communicated with a first water supply loop and a first water outlet loop.

In addition, the outdoor water circulation system 10 further includes: the plurality of water pumps 14, the plurality of water pumps 14 are disposed in parallel between the first water supply loop 15 and the second water supply loop 17. In this way, the present utility model increases the flow rate of the cooling water in the circulation line (i.e., the water inlet line 12 and the water outlet line 13) by arranging a plurality of water pumps in parallel between the first water supply loop 15 and the second water supply loop 17, so as to ensure the heat exchanging effect of the first heat exchanger 30 and the second heat exchanger.

Illustratively, as shown in fig. 1, the outdoor water circulation system 10 includes: 3 water pumps 14,3 water pumps 14 are arranged in parallel between the first water supply loop 15 and the second water supply loop 17.

To ensure the flow rate of the cooling water in the circulation lines (i.e., the water inlet line 12 and the water outlet line 13), in some embodiments, the number of the water pumps 14 may be one more than the number of the cooling towers 11, and, for example, when the number of the cooling towers 11 is 3, 4 water pumps 14 may be provided. Wherein the 4 water pumps 14 may be disposed in parallel between the first water supply loop 15 and the second water supply loop 17.

In some embodiments, the outdoor water circulation system 10 further includes: a first flow rate adjusting valve 191, the first flow rate adjusting valve 191 being disposed at the water inlet pipe 12 near the outdoor first inlet 31 for controlling the flow rate of the cooling water flowing into the first heat exchanger 30.

In this way, the flow rate of the cooling water entering the first heat exchanger 30 can be controlled by the first flow rate adjusting valve 191, thereby realizing fine control.

In other embodiments, the outdoor water circulation system 10 may further include: a second flow regulating valve 192, said second flow regulating valve 192 being arranged in the inlet conduit 12 near the outdoor second inlet for controlling the flow of cooling water into the second heat exchanger 40. In this way, the flow rate of cooling water entering the second heat exchanger 40 can be controlled by the second flow rate regulating valve 192, thereby achieving fine control. Particularly, when the compression type air conditioner end system is operated, the second flow regulating valve 192 is used for regulating the flow of the cooling water, so that the condensation temperature can be ensured to be in a preset range, and the low pressure or the high pressure of the condensation pressure caused by the excessively high or excessively low condensation temperature can be prevented from causing the shutdown protection of the compression type air conditioner end system.

Fig. 3 is a schematic circuit diagram of a water-cooled air conditioning system according to an embodiment of the present utility model, and in one possible implementation, as shown in fig. 3, the water-cooled air conditioning system 100 further includes: a temperature detector 50 and a controller 60, the temperature detector 50 being used for detecting the temperature of cooling water flowing out from the cooling tower 11; the controller 60 is electrically connected to the temperature detector 50, the first flow rate adjustment valve 191, and the second flow rate adjustment valve 192, and is configured to: when the temperature of the cooling water is obtained to be less than the first preset value, the first flow rate adjustment valve 191 is controlled to be opened, and the second flow rate adjustment valve 192 is controlled to be closed.

It can be understood that when the temperature of the cooling water is smaller than the first preset value, the temperature of the cooling water is lower, and the heat pipe type heat exchanger of the tail end system of the multi-split air conditioner can meet the refrigeration requirement of the data machine room, so that the utilization rate of a natural cold source can be improved, and the PUE value of the communication machine room is reduced.

In addition, when the temperature of the cooling water is obtained to be greater than the second preset value, the controller 60 controls the second flow rate adjustment valve 192 to be opened and the first flow rate adjustment valve 191 to be closed, the second preset value being greater than the first preset value. When the temperature of the cooling water is higher than a second preset value, the heat pipe type heat exchanger of the multi-split air conditioner tail end system can not provide cold energy for the communication machine room. Accordingly, the second flow regulating valve 192 is opened and the cooling capacity is provided to the communication room by the compression air conditioning end system.

Further, when the temperature of the cooling water is acquired to be equal to or higher than the first preset value and equal to or lower than the second preset value, the controller 60 controls both the first flow rate adjustment valve 191 and the second flow rate adjustment valve 192 to be opened. In this way, the possibility of using natural cold sources by the water-cooled air conditioning system 100 can be improved, the PUE value of the communication machine room can be effectively reduced, and the power and energy conservation and carbon reduction can be realized.

The foregoing is merely illustrative of specific embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any changes or substitutions within the technical scope of the present utility model should be covered by the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims (10)

1. A water-cooled air conditioning system, comprising:

an outdoor water circulation system comprising: the cooling device comprises a cooling tower, a water inlet pipeline and a water outlet pipeline, wherein one ends of the water inlet pipeline and the water outlet pipeline are respectively communicated with the cooling tower;

end system of multi-split air conditioner includes: a plurality of first indoor units, at least one liquid separating tank and a gas collecting tank; the liquid separation tank comprises: the liquid outlets are communicated with the first indoor units one by one; the vapor collection canister includes: the air inlets are communicated with the first indoor units one by one;

a first heat exchanger comprising: the first water flow path, the first refrigerant flow path, an outdoor first inlet communicated with the water inlet pipeline, an outdoor first outlet communicated with the water outlet pipeline, an indoor first inlet communicated with the air outlet and an indoor first outlet communicated with the liquid inlet, wherein one end of the first water flow path is communicated with the outdoor first inlet, and the other end of the first water flow path is communicated with the outdoor first outlet; one end of the first refrigerant flow path is communicated with the indoor first inlet, and the other end of the first refrigerant flow path is communicated with the indoor first outlet.

2. The water-cooled air conditioning system according to claim 1, wherein each of the plurality of first indoor units includes: and the heat pipe type heat exchanger is communicated with the liquid outlet and the air inlet.

3. The water-cooled air conditioning system according to claim 1, further comprising:

a compression air conditioning end system, the compression air conditioning end system comprising:

a second indoor unit having a compressor;

a second heat exchanger, the second heat exchanger comprising: the second water flow path, a second refrigerant flow path, an outdoor second inlet communicated with the water inlet pipeline, an outdoor second outlet communicated with the water outlet pipeline, an indoor second inlet communicated with the second indoor unit and an indoor second outlet communicated with the second indoor unit, one end of the second water flow path is communicated with the outdoor second inlet, and the other end of the second water flow path is communicated with the outdoor second outlet; one end of the second refrigerant flow path is communicated with the indoor second inlet, and the other end of the second refrigerant flow path is communicated with the indoor second outlet.

4. The water-cooled air conditioning system according to claim 3, wherein the outdoor water circulation system further comprises: the water pump is arranged on the water inlet pipeline and is used for conveying cooling water in the cooling tower along the water inlet pipeline from the cooling tower to the water pump.

5. The water cooled air conditioning system of claim 3 wherein the first heat exchanger and the second heat exchanger are both shell and tube water-fluorine heat exchangers.

6. The water-cooled air conditioning system according to claim 4 wherein the outdoor water circulation system further comprises: the cooling tower comprises a water pump, a cooling tower, a first water supply loop and a first water outlet loop, wherein the first water supply loop and the first water outlet loop are annular circulating pipelines, the first water supply loop is arranged on the water inlet pipeline and is positioned between the water pump and the cooling tower, and the first water outlet loop is arranged between the cooling tower and an outdoor first outlet.

7. The water cooled air conditioning system of claim 6 wherein the water inlet line is in communication with the first and second heat exchangers, respectively, the first and second heat exchangers being disposed in parallel between the water inlet line and the water outlet line.

8. The water-cooled air conditioning system according to claim 7, wherein the outdoor water circulation system further comprises:

and the first flow regulating valve is arranged at the position, close to the outdoor first inlet, of the water inlet pipeline and is used for controlling the flow of cooling water flowing into the first heat exchanger.

9. The water-cooled air conditioning system according to claim 8, wherein the outdoor water circulation system further comprises:

and the second flow regulating valve is arranged at the position, close to the outdoor second inlet, of the water inlet pipeline and is used for controlling the flow of cooling water flowing into the second heat exchanger.

10. The water-cooled air conditioning system according to claim 9, further comprising:

a temperature detector for detecting a temperature of cooling water flowing out of the cooling tower;

a controller electrically connected to each of the temperature detector, the first flow regulating valve, and the second flow regulating valve and configured to:

when the temperature of the cooling water is smaller than a first preset value, the first flow regulating valve is controlled to be opened, and the second flow regulating valve is controlled to be closed;

when the temperature of the cooling water is obtained to be larger than a second preset value, the second flow regulating valve is controlled to be opened, the first flow regulating valve is controlled to be closed, and the second preset value is larger than the first preset value;

and when the temperature of the cooling water is obtained to be more than or equal to the first preset value and less than or equal to the second preset value, controlling the first flow regulating valve and the second flow regulating valve to be opened.