CN220402226U

CN220402226U - Air conditioning system with liquid pump heat pipe and mechanical compression combined refrigeration

Info

Publication number: CN220402226U
Application number: CN202321988020.5U
Authority: CN
Inventors: 邓钊帆; 黄华柱; 石纪赞
Original assignee: Shenzhen Bojian Technology Co ltd
Current assignee: Shenzhen Bojian Technology Co ltd
Priority date: 2023-07-27
Filing date: 2023-07-27
Publication date: 2024-01-26
Anticipated expiration: 2033-07-27

Abstract

The utility model relates to an air conditioning system with a liquid pump heat pipe and mechanical compression combined refrigeration, which comprises a fan, a water distributor, a wet film, a water storage tank, a cooling circulating water pump, a surface air cooler, a liquid pump, a first throttling device, a second throttling device, a first electric three-way valve, a second electric three-way valve, a compressor, a liquid storage tank, a check valve, a first heat pipe condenser, a second heat pipe condenser, an air conditioning tail end and a controller, wherein the controller is electrically connected with the first electric three-way valve, the second electric three-way valve, the liquid pump, the cooling circulating water pump, the compressor and the fan. According to different seasons, different operation modes can be adopted, external natural air cooling is fully utilized for heat dissipation and cooling, consumption can be reduced, and cooling requirements can be met under certain requirements.

Description

Air conditioning system with liquid pump heat pipe and mechanical compression combined refrigeration

Technical Field

The utility model relates to the field of evaporative cooling and heat exchange products, in particular to an air conditioning system with a liquid pump heat pipe and mechanical compression combined refrigeration function.

Background

In a data center machine room, in order to maintain a constant indoor temperature, a refrigerating unit needs to be operated all the year round, and machine room equipment is cooled to ensure the normal operation of the machine room equipment, so that huge power consumption is brought. Under the dual pressures of energy conservation, emission reduction and operation cost reduction, the national dual-carbon policy is complied with, new energy-saving technology and products are required to be continuously researched and developed, abundant cold sources in the nature are fully utilized, the power consumption of a data center is further reduced, the existing data center air conditioning system cannot perform mode switching according to season transformation, natural air cooling is not fully utilized, and energy conservation is not enough.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a liquid pump heat pipe and mechanical compression composite refrigeration air conditioning system, which combines a compressor refrigeration system with a liquid pump drive heat pipe system, uses a liquid storage tank as a bridge, runs in three modes, fully utilizes a natural cold source, and uses the liquid storage tank as an evaporator for mechanical refrigeration as a secondary cooler of the liquid pump system in a mixed mode, wherein the two systems can be independently used, so that the problem caused by different pressures is solved.

Meanwhile, through controlling the switch of different channels of the electric three-way valve, different operation modes can be adopted according to different seasons, the external natural air cooling is fully utilized for heat dissipation and cooling, the energy consumption can be reduced, and the cooling requirement can be met under certain requirements.

The technical scheme of the embodiment of the utility model is as follows:

an air conditioning system with liquid pump heat pipes and mechanical compression combined refrigeration comprises a fan, a water distributor, a wet film, a water storage tank, a cooling circulating water pump, a surface air cooler, a liquid pump, a first throttling device, a second throttling device, a first electric three-way valve, a second electric three-way valve, a compressor, a liquid storage tank, a check valve, a first heat pipe condenser, a second heat pipe condenser, an air conditioning tail end and a controller, wherein the fan is positioned at the top of the air conditioning system, the water distributor is positioned above the wet film, the surface air cooler is positioned at the air inlet side of the wet film, the first heat pipe condenser is positioned at the air outlet side of the wet film, the second heat pipe condenser is positioned at the rear of the first heat pipe condenser, the water storage tank is positioned below the wet film, the water inlet end of the cooling circulating water pump is communicated with the water storage tank through a pipeline, the water outlet end of the cooling circulating water pump is communicated with the water inlet of the surface air cooler through a pipeline, and the water outlet of the surface air cooler is communicated with the water distributor through a pipeline;

the liquid outlet end of the first heat pipe condenser is communicated with the first liquid inlet end of the liquid storage tank through a pipeline, the air inlet end of the first heat pipe condenser is communicated with the first liquid outlet end of the first electric three-way valve through a pipeline, the air inlet end of the first electric three-way valve is communicated with one end of the tail end of the air conditioner through a pipeline, the other end of the tail end of the air conditioner is communicated with one end of the first throttling device and the first liquid outlet end of the second electric three-way valve through a pipeline, the other end of the first throttling device is communicated with the liquid outlet end of the liquid pump through a pipeline, the liquid inlet end of the liquid pump is communicated with the second liquid outlet end of the second electric three-way valve through a pipeline, the second liquid inlet end of the liquid storage tank is communicated with one end of the second throttling device through a pipeline, the other end of the second throttling device is communicated with the liquid outlet end of the second heat pipe condenser through a pipeline, the air inlet end of the second heat pipe is communicated with the air outlet end of the second heat pipe is communicated with the check valve through a check valve, and the check valve is communicated with the air outlet end of the check valve; the controller is electrically connected with the first electric three-way valve, the second electric three-way valve, the liquid pump, the cooling circulating water pump, the compressor and the fan.

Compared with the prior art, the utility model has the beneficial effects that:

by arranging the compressor, the second heat pipe condenser, the liquid pump and the first heat pipe condenser, the system has the refrigeration conforming functions of mechanical refrigeration and natural refrigeration; the air conditioning system is operated in summer mode, spring and autumn mode or winter mode by arranging a first electric three-way valve and a second electric three-way valve and controlling the on-off of channels of the first electric three-way valve and the second electric three-way valve; the mechanical cooling is performed under the condition of insufficient cooling capacity in summer mode, so that the cooling of the tail end of the air conditioner is ensured; in spring and autumn mode, the liquid pump is operated for cooling under the condition that the cold energy demand is not very high, and mechanical refrigeration is supplemented under the condition that the cold energy is insufficient, so that the compressor is in a low-power state, and the power consumption of the whole air conditioning system is reduced; in winter mode, the temperature of the outside air is low, the required cooling capacity is small, and only the liquid pump is used for cooling, so that the power consumption of the whole air conditioning system is greatly reduced.

Drawings

FIG. 1 is a schematic diagram of an air conditioning system with a liquid pump heat pipe and mechanical compression combined refrigeration in the present utility model;

FIG. 2 is a schematic diagram of an air conditioning system with a combination of heat pipes of a liquid pump and mechanical compression refrigeration in summer mode according to the present utility model;

FIG. 3 is a schematic diagram of the air conditioning system of the utility model with a combination of heat pipes of a liquid pump and mechanical compression refrigeration in spring and autumn;

FIG. 4 is a schematic diagram of an air conditioning system with a combination of heat pipes for a liquid pump and mechanical compression refrigeration in winter mode according to the present utility model;

11. a blower; 12. a surface cooler; 13. a water distributor; 14. wet film; 15. a first heat pipe condenser; 16. a second heat pipe condenser; 17. a second throttle device; the method comprises the steps of carrying out a first treatment on the surface of the 18. A compressor; 19. a check valve; 20. a cooling circulating water pump; 21. a water storage tank; 22. a liquid storage tank; 23. a second electric three-way valve; 24. a liquid pump; 25. a first throttle device; 26. a first electric three-way valve; 27. and (5) an air conditioner tail end.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

As shown in fig. 1, fig. 1 is a schematic diagram of an air conditioning system with a liquid pump heat pipe and mechanical compression combined refrigeration in the present utility model; an air conditioning system with liquid pump heat pipes and mechanical compression combined refrigeration comprises a fan 11, a water distributor 13, a wet film 14, a water storage tank 21, a cooling circulating water pump 20, a surface cooler 12, a liquid pump 24, a first throttling device 25, a second throttling device 17, a first electric three-way valve 26, a second electric three-way valve 23, a compressor 18, a liquid storage tank 22, a check valve 19, a first heat pipe condenser 15, a second heat pipe condenser 16, an air conditioning tail end 27 and a controller, wherein the fan 11 is positioned at the top of the air conditioning system, the water distributor 13 is positioned above the wet film 14, the surface cooler 12 is positioned at the air inlet side of the wet film 14, the first heat pipe condenser 15 is positioned at the air outlet side of the wet film 14, the second heat pipe condenser 16 is positioned at the rear of the first heat pipe condenser 15, the water storage tank 21 is positioned below the wet film 14, the water inlet end of the cooling circulating water pump 20 is communicated with the water storage 21 through a pipeline, the water outlet end of the cooling circulating water pump 20 is communicated with the water inlet 12 through the water inlet 12 of the surface cooler 13;

the liquid outlet end of the first heat pipe condenser 15 is communicated with the first liquid inlet of the liquid storage tank 22 through a pipeline, the liquid inlet end of the first heat pipe condenser 15 is communicated with the first liquid outlet end of the first electric three-way valve 26 through a pipeline, the liquid inlet end of the first electric three-way valve 16 is communicated with one end of the air conditioning tail end 27 through a pipeline, the other end of the air conditioning tail end 27 is communicated with one end of the first throttling device 25 and the first liquid outlet end of the second electric three-way valve 23 through a pipeline, the other end of the first throttling device 25 is communicated with the liquid outlet end of the liquid pump 24 through a pipeline, the liquid inlet end of the liquid pump 24 is communicated with the second liquid outlet end of the second electric three-way valve 23 through a pipeline, the liquid inlet end of the second electric three-way valve 23 is communicated with the liquid outlet end of the liquid storage tank 22 through a pipeline, the second liquid inlet end of the second electric three-way valve 22 is communicated with one end of the second throttling device 17 through a pipeline, the other end of the second throttling device 17 is communicated with the liquid outlet end of the second heat pipe 16 through a pipeline, the liquid outlet end of the second electric three-way valve 23 is communicated with the liquid outlet end of the liquid pump 19 through a check valve 18, and the liquid outlet end of the second electric three-way valve 19 is communicated with the air inlet end of the air pump 18 through a check valve 18; the controller is electrically connected with the first electric three-way valve 26, the second electric three-way valve 23, the liquid pump 24, the cooling and circulating water pump 20, the compressor 18 and the fan 11.

The liquid pump of the utility model conveys the refrigerant liquid in the liquid storage tank to the tail end of the air conditioner, the heat pipe evaporator in the tail end of the air conditioner absorbs the air heat in the machine room, the refrigerant is changed into gas from the liquid, the gas is cooled by the heat exchange and evaporation in the first heat pipe condenser and the second heat exchange condenser, the cooled air is released heat and condensed into liquid, and the liquid is stored in the liquid storage tank, so that the circulating operation is performed. The utility model combines the compressor refrigerating system with the liquid pump driving heat pipe system, uses the liquid storage tank as a bridge, runs in three modes, fully utilizes the natural cold source, uses the liquid storage tank as a mechanical refrigerating evaporator as a secondary cooler of the liquid pump system in the mixed mode, and can independently use the two systems to solve the problem caused by different pressures.

The air conditioning system realizes the switching of three cooling modes of summer, spring and autumn and winter by controlling the on-off of different channels of the first electric three-way valve and the second electric valve and the selective opening of the liquid pump and the compressor.

In summer season, the system controls the conduction between the inlet end and the second outlet end of the first electric three-way valve, the conduction between the inlet end and the first outlet end of the second electric three-way valve, the compressor is started, the cooling circulating water pump is started, the fan is started, and the system enters a summer mode. As shown in fig. 2, fig. 2 is a schematic diagram of an air conditioning system with a liquid pump heat pipe and mechanical compression combined refrigeration in summer mode according to the present utility model.

In summer, when the ambient temperature is more than 20 ℃, the controller control system operates in a mechanical refrigeration mode, medium-temperature low-pressure refrigerant gas in the tail end of the air conditioner is pumped into the compressor, the compressor compresses the medium-temperature low-pressure refrigerant gas into high-temperature high-pressure refrigerant gas, the high-temperature high-pressure gas refrigerant is conveyed into the second heat pipe condenser through a pipeline, the high-pressure liquid refrigerant is condensed by cold air Cheng Gaowen, the low-temperature low-pressure liquid refrigerant is throttled and reduced in pressure through the second throttling device, the low-temperature low-pressure liquid refrigerant enters the liquid storage tank from the second liquid inlet end of the liquid storage tank to be stored, the liquid refrigerant in the liquid storage tank is conveyed into the tail end of the air conditioner through the liquid outlet end of the liquid storage tank, the hot air in a machine room is subjected to heat exchange, temperature reduction and cooling, and the liquid refrigerant is conveyed into the compressor through the channels of the inlet end and the second outlet end of the first electric three-way valve after the liquid refrigerant is subjected to heat exchange and temperature rise, and thus circulated.

In a mechanical refrigeration mode in summer, the first heat pipe condenser is not used, cold air cooled by air of the second heat pipe condenser comes from an internal cold air unit, cooling water in the cold air unit is pumped out from the water storage tank to be conveyed into the surface cooler by the cooling circulating water pump, heat exchange is carried out with external hot air, the water temperature is increased, the water is conveyed to the water distributor and sprayed onto a wet film, the external hot air is conveyed into the wet film after heat exchange and cooling of the external hot air and the cooling water, the cooling circulating water in the wet film and air after heat exchange and cooling are subjected to a series of evaporation and heat transfer, the water temperature is reduced and flows back to the water storage tank, the cold air is further cooled and conveyed to the second heat pipe condenser, and the second heat pipe condenser is subjected to heat exchange and condensation, so that circulation is carried out. In the summer mode, the compressor has larger running power and larger power consumption, but can meet the cooling requirement of the air conditioner at the tail end in summer with high temperature.

In spring and autumn, the system controls the conduction between the inlet end and the first outlet end of the first electric three-way valve, the conduction between the inlet end and the second outlet end of the second electric three-way valve, the compressor is started, the cooling circulating water pump is started, the liquid pump is started, the fan is started, and the spring and autumn mode is entered. As shown in fig. 3, fig. 3 is a schematic diagram of an air conditioning system with a combination of a liquid pump heat pipe and mechanical compression refrigeration in spring and autumn mode according to the present utility model.

In spring and autumn, when the ambient temperature is more than or equal to 10 ℃ and less than or equal to 20 ℃, the controller controls the system to operate in a mechanical refrigeration and liquid pump conforming mode, and for a liquid pump circulating system: medium-temperature low-pressure refrigerant gas in the tail end of the air conditioner enters the first heat pipe condenser through the channels of the inlet end and the first outlet end of the first electric valve, exchanges heat with cold air conveyed by the cold air unit, condenses into liquid refrigerant, and conveys the liquid refrigerant to the liquid storage tank for storage through the first liquid inlet end of the liquid storage tank, and the liquid refrigerant is pumped by the liquid pump, flows out of the liquid outlet end of the liquid storage tank, and is conveyed to the first throttling device through the channels of the inlet end and the second outlet end of the second electric three-way valve, and is conveyed to the tail end of the air conditioner after being throttled, and the liquid refrigerant circulates in this way.

For mechanical refrigeration systems: the compression refrigeration system is used as auxiliary supplementary refrigeration, and when the liquid pump circulation system does not provide the whole heat exchange quantity, the compression refrigeration is provided. The refrigerant stored in the liquid storage tank from the first heat pipe condenser in the liquid pump circulation system is mixed with gas and liquid, at the moment, the gaseous refrigerant is pumped out from the air outlet end at the upper part of the liquid storage tank, is sucked into the compressor through the check valve to be compressed into the gaseous refrigerant with high temperature and high pressure, is condensed into the liquid refrigerant through the second heat pipe condenser, and is throttled by the second throttling device and then returns to the liquid storage tank.

In the mixed refrigerating mode of spring and autumn, the first heat pipe condenser and the second heat pipe condenser are used, cold air cooled by the first heat pipe condenser and the second heat pipe condenser is from an internal cold air unit, cooling circulating water in the cold air unit pumps cooling water with low temperature out of a water storage tank and conveys the cooling water to a surface cooler, the cooling water exchanges heat with external hot air, the water temperature rises, the cooling water is conveyed to a water distributor and is sprayed onto a wet film, the external hot air exchanges heat with the cooling water and is conveyed to the wet film after being cooled, the cooling circulating water in the wet film and air after heat exchange and cooling are subjected to a series of evaporation heat transfer, the water temperature drops and is conveyed to the second heat pipe condenser, and the cooling water is further cooled and conveyed to the second heat pipe condenser for heat exchange and condensation, so that the cooling water circulates. In spring and autumn mode, the compressor has smaller running power and smaller power consumption, and can greatly reduce the power consumption of the whole air conditioning system when the cooling requirement of the tail end of the air conditioner is met.

In winter, the system controls the conduction between the inlet end and the first outlet end of the first electric three-way valve, the conduction between the inlet end and the second outlet end of the second electric three-way valve, the cooling circulating water pump is started, the liquid pump is started, the fan is started, and the system enters a spring and autumn mode. As shown in fig. 4, fig. 4 is a schematic diagram of an air conditioning system with a liquid pump heat pipe and mechanical compression combined refrigeration in winter mode according to the present utility model.

In winter, when the ambient temperature is less than 10 ℃, the controller control system operates in a liquid pump circulation mode, medium-temperature low-pressure refrigerant gas in the tail end of the air conditioner enters the first heat pipe condenser through the channels of the inlet end and the first outlet end of the first electric valve, heat exchange condensation is carried out on the refrigerant gas and cold air conveyed by the cold air unit, gaseous refrigerant is condensed into liquid refrigerant, the liquid refrigerant is conveyed to the liquid storage tank through the first liquid inlet end of the liquid storage tank for storage, the liquid refrigerant is pumped by the liquid pump, flows out of the liquid outlet end of the liquid storage tank, is conveyed to the first throttling device through the channels of the inlet end and the second outlet end of the second electric three-way valve, is conveyed to the tail end of the air conditioner after throttling, and is circulated in this way.

In a winter refrigeration mode, the second heat pipe condenser is not used, cold air cooled by air of the first heat pipe condenser comes from an internal cold air unit, a cooling circulating water pump in the cold air unit pumps cooling water with low temperature out of a water storage tank and conveys the cooling water to the surface cooler, heat exchange is carried out on the cooling water and the cooling water with external hot air, the cooling water is conveyed to the water distributor and sprayed onto a wet film, the external hot air exchanges heat with the cooling water and is conveyed to the wet film, after a series of evaporation heat transfer is carried out on the cooling circulating water in the wet film and air cooled by heat exchange, the water temperature drops and flows back to the water storage tank, the cold air is further cooled and conveyed to the second heat pipe condenser, and the second heat pipe condenser is subjected to heat exchange and condensation, so that circulation is carried out. Under winter, the air conditioning system only starts the liquid pump, and fully utilizes the outdoor natural cold source. If the heat exchange in the machine room is satisfied, the cooling air unit can be closed. The medium-temperature low-pressure gaseous refrigerant after heat exchange with the machine room is sent to the first heat pipe condenser, the first heat pipe condenser exchanges heat with ambient air to be condensed into liquid refrigerant, the liquid refrigerant flows into the liquid storage tank, and the liquid refrigerant is sent to the tail end of an air conditioner of the machine room through the liquid pump, so that the liquid refrigerant circulates. In the mode, only the power consumption of the liquid pump is utilized, the external natural cold source is fully utilized, and the power consumption of the whole air conditioning system is greatly reduced.

The controller selects, by comparison of temperature detection, that mode of operation of the system, such as in summer mode when the ambient temperature is greater than 20 degrees, in winter mode when the ambient temperature is less than 10 degrees, and in spring and autumn transition mode when the ambient temperature is between 10 and 20 degrees.

The air conditioning system can well integrate the advantages of mechanical refrigeration and liquid pump system refrigeration, effectively solve the limitation of regional problems, be applicable to the whole domain, separate two sets of systems and avoid the problem of disorder of the control system caused by different pressures.

The utility model realizes that the system has the refrigeration function of mechanical refrigeration and natural refrigeration by arranging the compressor, the second heat pipe condenser, the liquid pump and the first heat pipe condenser; the air conditioning system is operated in summer mode, spring and autumn mode or winter mode by arranging a first electric three-way valve and a second electric three-way valve and controlling the on-off of channels of the first electric three-way valve and the second electric three-way valve; the mechanical cooling is performed under the condition of insufficient cooling capacity in summer mode, so that the cooling of the tail end of the air conditioner is ensured; in spring and autumn mode, the liquid pump is operated for cooling under the condition that the cold energy demand is not very high, and mechanical refrigeration is supplemented under the condition that the cold energy is insufficient, so that the compressor is in a low-power state, and the power consumption of the whole air conditioning system is reduced; in winter mode, the temperature of the outside air is low, the required cooling capacity is small, and only the liquid pump is used for cooling, so that the power consumption of the whole air conditioning system is greatly reduced.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples only represent preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. An air conditioning system of liquid pump heat pipe and mechanical compression composite refrigeration, which is characterized in that:

the air conditioning system comprises a fan, a water distributor, a wet film, a water storage tank, a cooling circulating water pump, a surface air cooler, a liquid pump, a first throttling device, a second throttling device, a first electric three-way valve, a second electric three-way valve, a compressor, a liquid storage tank, a check valve, a first heat pipe condenser, a second heat pipe condenser, an air conditioning tail end and a controller, wherein the fan is positioned at the top of the air conditioning system, the water distributor is positioned above the wet film, the surface air cooler is positioned at the air inlet side of the wet film, the first heat pipe condenser is positioned at the air outlet side of the wet film, the second heat pipe condenser is positioned at the rear of the first heat pipe condenser, the water storage tank is positioned below the wet film, the water inlet end of the cooling circulating water pump is communicated with the water storage tank through a pipeline, the water outlet end of the cooling circulating water pump is communicated with the water inlet of the surface air cooler through a pipeline, and the water outlet of the surface air cooler is communicated with the water distributor through a pipeline;