CN205090542U - Special dry -type air conditioner of computer lab - Google Patents

Abstract

The utility model discloses a special dry-type air conditioner for a computer room, which comprises a first heat exchanger (2), a compressor (1), a second heat exchanger (7), and a throttling device (4) connected end to end in order to form a working fluid cycle Passage, the first heat exchanger and the second heat exchanger are evaporator and condenser respectively; It is characterized in that, be provided with the water pan (5) that is used to collect condensed water at the bottom of the first heat exchanger; Compressor and condenser A part of the pipeline between them is detoured in the water pan, and the working medium flowing through the pipeline exchanges heat with the condensed water in the water pan. The dry-type air conditioner dedicated to the machine room can make full use of the condensed water, which is energy-saving and environmentally friendly.

Description

A special dry air conditioner for machine room

technical field

The utility model relates to a special dry air conditioner for a computer room.

Background technique

With the rapid development of China's communications industry and the continuous expansion of the scale of communications networks, the energy consumption of dedicated air conditioners in communications equipment rooms has increased dramatically. In addition, in order to ensure the safe and stable transmission of communication signals, the air conditioning system in the communication room is required to run uninterrupted throughout the year; in special occasions, the air conditioner is also required to operate under dry conditions.

At present, in order to ensure the dry operation of the air conditioner in the computer room, the common practice is to increase the evaporation temperature of the refrigeration system to ensure that the working temperature of the evaporator is higher than the dew point temperature of the indoor air to avoid the existence of condensed water; however, this method only The temperature environment in the computer room can be guaranteed, and the humidity environment in the computer room cannot be controlled, which may cause communication failure due to excessive humidity in the computer room. In order to solve this problem, the air conditioner in the computer room operates in a wet condition, and a strict condensate discharge pipeline is designed to ensure that the condensate will not leak into the computer room. However, this design still has the risk of condensate leakage.

Therefore, it is necessary to design a special air conditioner for computer rooms with remarkable energy-saving effect.

Utility model content

The technical problem to be solved by the utility model is to provide a special dry air conditioner for a machine room, which can make full use of condensed water, and is energy-saving and environment-friendly.

The technical solution of the utility model is as follows:

A special dry-type air conditioner for a machine room, the first heat exchanger (2), the compressor (1), the second heat exchanger (7), and the throttling device (4) are connected end to end in order to form a working fluid circulation path, and the first heat exchanger The heat exchanger and the second heat exchanger are respectively an evaporator and a condenser; a water pan (5) for collecting condensed water is provided at the bottom of the first heat exchanger; a part of the pipeline between the compressor and the condenser is placed in the water pan The working medium flowing through the pipeline exchanges heat with the condensed water in the water pan; the detour in the water pan means that a part of the pipeline is located in the water pan and submerged in water, and the heat is increased by coiling and rotating. Exchange efficiency;

The first heat exchanger is provided with a first fan (3); the second heat exchanger is provided with a second fan (8).

The dry air conditioner dedicated to the computer room also includes a controller and an indoor temperature sensor; the indoor temperature sensor is connected to the controller; the first heat exchanger, the compressor, the second heat exchanger, the first fan and the The second fan is controlled by the controller.

The dry air conditioner dedicated to the machine room also includes an outdoor temperature sensor, a water storage device (6), a water pump (9) and a spray system (11) for cooling the second heat exchanger; a water tray, a water storage device, The water pump and the sprinkler system are connected in sequence; the water storage device, the water pump and the sprinkler system are controlled by the controller; the outdoor temperature sensor is connected with the controller.

A valve (10) is provided between the spray system and the outlet of the water pump.

The valve is a three-way valve or a two-way valve controlled by a microprocessor;

When the valve is a three-way valve, one port of the three-way valve is connected to the condensate drain, and the other two ports are respectively connected to the outlet of the water pump and the water supply port of the sprinkler system.

The first fan is an axial fan, a centrifugal fan or an EC fan, and the second fan is an axial fan or a cross-flow fan.

The valve is a three-way valve; the microprocessor monitors the outdoor temperature and the water level of the water storage device through the outdoor temperature sensor and the water level sensor;

(1) When the outdoor temperature is greater than 18°C and the (condensed) water level is greater than the set value, open the water pump, spray system, and the valve between the spray system and the water pump outlet to spray the condensed water stored in the water storage device to the second heat exchanger;

(2) When the outdoor temperature is lower than 18°C and the water level of the water storage device is greater than the set value, open the valve between the water pump and the sprinkler system and the outlet of the water pump to discharge the condensed water stored in the water storage device to the outside.

This special dry air conditioner for computer rooms has the following characteristics:

(1) The pipeline between the compressor and the condenser is the compressor exhaust pipe; the compressor exhaust pipe is detoured in the water pan, so that 1) the condensed water generated during the operation of the refrigeration system is used to lower the compressor exhaust pipe. The heat in the exhaust pipe is taken away by the evaporation of condensed water to reduce the working temperature of the condenser; 2) The heat in the exhaust pipe is used to promote the evaporation of condensed water and reduce the risk of condensed water leakage;

At the same time (2), the operating temperature of the second heat exchanger is lowered through the spraying system to reduce the operating energy consumption of the refrigeration system.

The first heat exchanger is the evaporator, and the second heat exchanger is the condenser.

The special air conditioner for the computer room can adopt a split structure or an integrated structure.

The liquid refrigerant of high temperature and high pressure is in the liquid outlet pipe of the condenser.

The liquid refrigerant of low temperature and low pressure is in the liquid inlet pipe of the evaporator.

The gaseous refrigerant of low temperature and low pressure is in the intake pipe of the compressor.

The first heat exchanger adopts a micro-channel heat exchanger with large heat exchange area and small resistance. The second heat exchanger adopts a micro-channel heat exchanger with large heat exchange area and small resistance.

The first fan (3) is an axial fan, a centrifugal fan or an EC fan.

The second fan (8) adopts an axial fan or a cross-flow fan.

The water storage device is an automatic water storage device including a water tank and an automatic control valve for controlling the application of condensed water.

The water pump (9) is controlled by the water level of the automatic water storage device and the outdoor temperature sensor to provide power for the flow of condensed water.

The valve is an electric three-way, the opening state of the valve is controlled according to the water level of the automatic water storage device and the outdoor temperature sensor, and the flow direction of the condensed water is controlled.

The spraying system is installed directly above the second heat exchanger of the outdoor unit for cooling the condenser.

The second heat exchanger and the second fan are located outdoors, and the first heat exchanger and the first fan are located indoors.

In addition, the air conditioner adopts an integrated structure or a split structure. The integrated structure means that there is no outdoor unit, and the split structure means that the condenser is located outdoors and the evaporator is located indoors.

When the integrated structure is adopted, there is no outdoor unit, which can eliminate the risk of the outdoor unit of the air conditioner being stolen. When the split structure is adopted, since the condenser is located outdoors, it is beneficial to heat dissipation of the condenser and further improve thermal efficiency.

The controller adopts an analog control or a digital controller, and the controller is an existing mature module without involving any methods and procedures. The digital controller preferably adopts integrated modules such as single-chip microcomputer and DSP, which has a compact structure and is easy to implement.

Beneficial effect:

The utility model is a special dry-type air conditioner for a machine room. The exhaust pipeline of the compressor is connected to the condensed water pan, so that the condensed water generated during the cooling operation is used to reduce the exhaust temperature of the compressor, that is, to eliminate It eliminates the hidden danger of condensed water in the computer room, reduces the working temperature of the condenser, improves the operating efficiency of the refrigeration system, and greatly reduces the cooling energy consumption of the computer room air conditioner.

Compared with the existing technology, the utility model patent ensures the safe operation of the communication equipment in the computer room, and has remarkable energy-saving effect. Directly connect the exhaust pipe of the compressor to the condensate pan, and promote the evaporation of condensed water through the heat in the exhaust pipe, eliminating the risk of condensed water leakage; in addition, the evaporation of condensed water will take away the compressor exhaust The heat in the pipeline reduces the working temperature of the condenser in the refrigeration cycle. It is preliminarily estimated that for every 1°C decrease in the condensation temperature, the energy consumption of the refrigeration system can be reduced by 5-10%. This utility model patent not only ensures the dry operation of the air-conditioning system in the computer room, avoids the risk of condensate leakage, but also reduces the energy consumption of the air-conditioning system.

Furthermore, the utility model also designs a condensed water spraying system, which sprays the condensed water generated during the cooling operation of the indoor unit system onto the condenser of the outdoor unit under pressure, which reduces the operating temperature of the condenser and improves the efficiency of the refrigeration system. High operating efficiency, greatly reducing the cooling energy consumption of the air conditioner in the computer room. Directly use the condensed water produced during the cooling operation of the air conditioner to cool the condenser of the machine, spray the condensed water onto the condenser, take away the heat of the condenser through the evaporation of water, and reduce the working temperature of the condenser in the refrigeration cycle, thereby reducing Operating energy consumption of the refrigeration system.

The combination of two methods (one method is to connect the exhaust pipe of the compressor to the condensate pan, and the other method is to add a condensate spray system) can achieve the greatest energy saving and improve the efficiency of the air conditioner Effect.

Description of drawings

Fig. 1 is the overall structural representation of embodiment 1;

Figure 2 is a block diagram of the control system;

3 is a schematic diagram of the overall structure of Embodiment 2.

Explanation of symbols: 1-compressor, 2-first heat exchanger, 3-first fan, 4-throttling device, 5-water pan, 6-water storage device, 7-second heat exchanger, 8-the first Two fans, 9-water pump, 10-valve, 11-spray system.

detailed description

The utility model will be described in further detail below in conjunction with accompanying drawing and specific embodiment:

Example 1:

As shown in Figure 1-2, a special dry-type air conditioner for a computer room, the first heat exchanger (2), compressor (1), second heat exchanger (7), and throttling device (4) are connected end to end to form a working fluid The circulation path, the first heat exchanger and the second heat exchanger are respectively evaporators and condensers; a water pan (5) for collecting condensed water is provided at the bottom of the first heat exchanger;

A part of the pipeline between the compressor and the condenser is detoured in the water pan, and the working fluid flowing through the pipeline exchanges heat with the condensed water in the water pan.

The first heat exchanger is provided with a first fan (3); the second heat exchanger is provided with a second fan (8).

The dry-type air conditioner dedicated to the computer room also includes a controller and an indoor temperature sensor; the indoor temperature sensor is connected to the controller; the first heat exchanger, the compressor, the second heat exchanger, the first fan and the second fan are controlled by the controller. On the basis of Example 1, the exhaust pipeline of the compressor is directly connected to the condensed water pan, and the heat in the exhaust pipeline is used to promote the evaporation of condensed water, eliminating the risk of condensed water leakage, and the evaporation of condensed water Take away the heat in the exhaust pipeline of the compressor, reduce the working temperature of the condenser in the refrigeration cycle, and reduce the energy consumption of the refrigeration system.

The indoor temperature sensor is used to detect the temperature in the machine room, and the air conditioner can control the operation status of each device in the air conditioner according to the current value of the temperature in the machine room, and the specific control part is the prior art.

The gaseous refrigerant of high temperature and high pressure is in the discharge pipe of the compressor, and the pipe is detoured in the condensate pan before connecting to the condenser to reduce the temperature of the refrigerant in the pipe.

This kind of air conditioner can reduce the operating energy consumption of the system without adding other additional equipment, which not only reduces the energy consumption of the refrigeration system in the computer room, but also does not increase the investment of the refrigeration system too much. The temperature of the exhaust pipeline, through the evaporation of water, takes away the heat in the exhaust pipeline, greatly reducing the operating temperature of the condenser, thereby improving the operating efficiency of the refrigeration system and reducing the energy consumption of the refrigeration system; in addition, using the compressor The heat in the exhaust pipeline promotes the evaporation of condensed water in the condensed water pan, reducing the risk of condensed water leakage in the computer room, ensuring the safety of the air conditioner in the computer room, and reducing the energy consumption of the refrigeration system.

The refrigeration working condition is realized by the compressor, the water pan, the first heat exchanger, the first fan, the second pipeline, the throttling device, the second heat exchanger and the second fan, etc. The refrigerant circulates in the refrigeration pipeline, form a completely closed system. The refrigerant circulates in fluid form in this closed refrigeration system, and through phase change, it continuously absorbs heat from the first heat exchanger and releases heat in the second heat exchanger, thereby achieving the purpose of refrigeration. In addition, the compressor discharge pipe goes around the water pan before entering the condenser, transferring the heat in the compressor discharge pipe to the condensed water, reducing the temperature of the discharge pipe and thus reducing the operating temperature of the condenser, and the condensation The water absorbs the heat in the exhaust pipe and then vaporizes, reducing the risk of condensate leakage.

This kind of air conditioner can automatically reduce the operating energy consumption of the special air conditioner in the computer room, use the condensed water generated during the operation of the refrigeration system to reduce the working temperature of the condenser, and take away the heat of the compressor exhaust pipeline through the evaporation of water, greatly reducing The working temperature of the refrigeration system can be improved, thereby improving the operation efficiency of the refrigeration system and reducing the energy consumption of the refrigeration system; in addition, the heat in the exhaust pipeline of the compressor can promote the evaporation of condensed water, reduce the water storage capacity of the condensed water pan, and reduce the condensation in the machine room. The risk of water leakage, adjust the flow direction of condensed water according to the height of the water level and the indoor and outdoor temperature and humidity parameters, ensure the safety of the air conditioner in the computer room, and reduce the energy consumption of the refrigeration system; Energy-saving measures for system operation, turning the disadvantages of the refrigeration system into advantages, ensuring the safe and stable operation of the refrigeration system and reducing the energy consumption of the refrigeration system.

The realization of specific different working conditions is controlled by the controller. The controller is an existing mature technology, and its control method is a mature existing method. It is a method that can be implemented by those of ordinary skill in the art without creative labor. Therefore, The utility model does not involve any procedures and methods.

Example 2:

As shown in Figure 3, a special dry-type air conditioner for a machine room includes a compressor (1), a first heat exchanger (2), a first fan (3), a throttling device (4), a water pan (5), an automatic storage Water unit (6), second heat exchanger (7), second fan (8), water pump (9), valve (10) and sprinkler system (11); part of piping between compressor and condenser Circumventing in the water pan, the working medium flowing through the pipeline exchanges heat with the condensed water in the water pan; the dry-type air conditioner dedicated to the machine room preferably adopts an integrated structure without an outdoor unit, eliminating the possibility of the outdoor unit being stolen Risk; the first heat exchanger adopts micro-channel heat exchanger with large heat exchange area and small resistance. The first fan is an axial fan, a centrifugal fan or an EC fan. The automatic water storage device includes a water tank and an automatic control valve for controlling the application of condensed water. The second heat exchanger adopts a micro-channel heat exchanger with large heat exchange area and small resistance. The second fan is an axial fan or a cross-flow fan. The water pump is controlled by the water level of the automatic water storage device and the outdoor temperature sensor to provide power for the flow of condensed water and realize the application of condensed water. The valve is an electric three-way, the opening state of the valve is controlled according to the water level of the automatic water storage device and the outdoor temperature sensor, and the flow direction of the condensed water is controlled. The spraying system is installed directly above the second heat exchanger to realize cooling of the condenser.

The utility model patent can eliminate the hidden danger of condensed water in the machine room without adding other additional equipment. It stores the condensed water generated during the operation of the refrigeration system in the automatic water storage device, automatically collects and controls the circulation of condensed water through the automatic water storage device, and reduces the risk of leakage of condensed water in the computer room. According to the height of the water level and the indoor and outdoor temperature and humidity The parameter adjusts the flow direction of condensed water to ensure the safety of the air conditioner in the computer room; when the condensed water level in the water storage device meets certain requirements, the condensed water is sprayed on the condenser, and the heat of the condenser promotes the evaporation of condensed water and reduces condensation The accumulated water in the water tray eliminates the hidden danger of condensed water in the machine room;

The working conditions of the utility model patent are divided into three working conditions, which are respectively refrigeration working conditions, condensed water spray cooling working conditions, and condensed water emptying working conditions.

Cooling working condition: When the indoor temperature is higher than the set temperature by 28°C (16-30°C adjustable), the cooling working condition will be turned on. The refrigeration working condition is realized by the compressor, the first heat exchanger, the first fan, the throttling device, the second heat exchanger and the second fan, etc., and the refrigerant circulates in the refrigeration pipeline to form a completely closed system. The refrigerant circulates in fluid form in this closed refrigeration system, and through phase change, it continuously absorbs heat from the first heat exchanger and releases heat in the second heat exchanger, thereby achieving the purpose of refrigeration. This working condition is also compatible with the refrigeration working condition in Example 1, that is, the compressor discharge pipe goes around in the water pan before entering the condenser to transfer the heat in the compressor discharge pipeline to the condensed water, reducing exhaust The temperature of the pipeline reduces the working temperature of the condenser, and the condensed water absorbs the heat in the exhaust pipeline and then vaporizes, reducing the risk of condensed water leakage.

Condensed water spray refrigeration working condition: When the refrigeration system is running to generate enough condensed water, the detection signals of the outdoor temperature sensor and water level sensor are transmitted to the central controller. When the outdoor temperature is greater than 18°C and the condensed water level is greater than the set value, the water pump, The electric three-way (that is, three-way valve) and spraying system spray the condensed water onto the condenser, reduce the working temperature of the condenser, and reduce the energy consumption of the refrigeration system.

Condensed water emptying condition: When the refrigeration system generates enough condensed water, the detection signals of the outdoor temperature sensor and water level sensor are transmitted to the central controller. When the outdoor temperature is lower than 18°C and the condensed water level is greater than the set value, the water pump is turned on And the electric tee, drain the condensed water to the outside, reducing the risk of indoor condensed water leakage.

The utility model patent automatically collects and controls the circulation of condensed water through the automatic water storage device, reduces the risk of leakage of condensed water in the computer room, adjusts the flow direction of condensed water according to the height of the water level and the indoor and outdoor temperature and humidity parameters, and ensures the safety of the air conditioner in the computer room. Reduce the energy consumption of the refrigeration system; turn the potential safety hazard of condensed water in the machine room into an energy-saving measure for system operation, turn the disadvantages of the refrigeration system into advantages, and reduce the energy consumption of the refrigeration system while ensuring the safe and stable operation of the refrigeration system.

Claims (6)

1. A dry-type air conditioner dedicated to a machine room, the first heat exchanger (2), the compressor (1), the second heat exchanger (7), and the throttling device (4) are connected end to end in order to form a working fluid circulation path, and the first A heat exchanger and a second heat exchanger are respectively an evaporator and a condenser; it is characterized in that a water pan (5) for collecting condensed water is provided at the bottom of the first heat exchanger; A part of the pipeline between the compressor and the condenser is detoured in the water pan, and the working fluid flowing through the pipeline exchanges heat with the condensed water in the water pan; The first heat exchanger is provided with a first fan (3); the second heat exchanger is provided with a second fan (8). 2. The special dry-type air conditioner for machine rooms according to claim 1, further comprising a controller and an indoor temperature sensor; the indoor temperature sensor is connected to the controller; the first heat exchanger, the compressor , the second heat exchanger, the first fan and the second fan are all controlled by the controller. 3. The special dry air conditioner for machine room according to claim 2, characterized in that, the dry air conditioner for machine room also includes an outdoor temperature sensor, a water storage device (6), a water pump (9) and a water pump (9) for the second The spray system (11) for cooling the heat exchanger; the water tray, the water storage device, the water pump and the spray system are connected in sequence; the water storage device, the water pump and the spray system are controlled by the controller; the outdoor temperature sensor is connected with the controller. 4. The special dry air conditioner for machine rooms according to claim 3, characterized in that a valve (10) is provided between the spray system and the outlet of the water pump. 5. The special dry air conditioner for computer room according to claim 4, characterized in that, the valve is a three-way valve or a two-way valve controlled by a microprocessor; When the valve is a three-way valve, one port of the three-way valve is connected to the condensate drain, and the other two ports are respectively connected to the outlet of the water pump and the water supply port of the sprinkler system. 6. The special dry-type air conditioner for a computer room according to any one of claims 1-5, wherein the first fan is an axial fan, a centrifugal fan or an EC fan, and the second fan is an axial fan or a cross-flow fan.