CN210568962U

CN210568962U - Special machine set for fresh air and return air multi-processing surface series-parallel air outlet machine room

Info

Publication number: CN210568962U
Application number: CN201920835593.1U
Authority: CN
Inventors: 于向阳
Original assignee: XINJIANG GREEN REFRESHING ANGEL AIR ENVIRONMENT CO Ltd
Current assignee: XINJIANG GREEN REFRESHING ANGEL AIR ENVIRONMENT CO Ltd
Priority date: 2019-05-30
Filing date: 2019-06-04
Publication date: 2020-05-19
Anticipated expiration: 2029-06-04

Abstract

The utility model discloses a fresh air and special unit of parallelly connected fan house of surface cluster of back wind multiprocessing, unit machine incasement is separated into air inlet room and supply-air room, be provided with the new trend import on the tank wall of air inlet room one side, be provided with the return air import on the tank wall of the opposite side, the return air duct is being connected to the return air import, the indoor surface heat exchanger that is setting up of air inlet, the air inlet side and the return air duct intercommunication of surface heat exchanger, the surface heat exchanger air-out side is setting up direct evaporation refrigerating plant, air cleaner is being installed to surface heat exchanger air inlet side or direct evaporation refrigerating plant air-out side, setting up adjusting device between surface heat exchanger and the direct evaporation refrigerating plant, the forced draught blower is being installed to the indoor air supply. The utility model discloses compact structure, it is multiple functional, realize the different operational mode of unit return air and new trend, reduce air conditioning unit's operating energy consumption, the evaporation refrigeration supplies the cooling water installation to prepare cold water, and the operation of the cold water closed type in the surface heat exchanger of unit improves the security.

Description

Special machine set for fresh air and return air multi-processing surface series-parallel air outlet machine room

Technical Field

The utility model belongs to the air treatment equipment in heating and ventilating air conditioning field, especially a fresh air and the special unit of air-out computer lab of the parallelly connected play of back wind multiprocessing surface cluster.

Background

In recent years, with the development of IT information industry, more and more data centers of different sizes are built up all over the country. Because the heating density of the machine room is very high, the heating value of the machine room per unit area is increased to 500-2000W/square meter, and the power consumption of an air conditioning system for cooling the machine room accounts for 30-40% of the power consumption of a cabinet in the machine room. In order to reduce the power consumption of the machine rooms, large data machine rooms serving the whole country are constructed in the north in large quantities, wherein the power supply power of one large machine room can reach 60 ten thousand kW, which is equivalent to a medium-scale thermal power plant, and the power consumption is close to that of a million population city. According to statistics, the energy consumption of the data center in China already accounts for 1% of national power consumption, and the reduction of the power consumption of a large-scale data center becomes an urgent need for energy conservation.

The system has abundant dry air energy and free outdoor cold sources in the northern areas of dry and cold areas, so that the outdoor dry air energy can be used for cooling machine room return air to serve as cold air required by the tail end of a machine room; when outdoor air is clean, the air can be directly evaporated, cooled and then sent into a data room to take away heat of the room, so that the key of saving energy of the data center is to maximally utilize dry air energy and an outdoor free cold source.

Dry air energy evaporative refrigeration is also applied to data centers, but the volume of an air processing device is large, a machine room is limited, and installation and maintenance are difficult; in addition, the data center has very high requirements on the safe operation of the air conditioning system; the dry air energy evaporation refrigeration is greatly influenced by the external air environment, and the temperature cannot be completely controlled when the return air is independently utilized by circulating cooling; when outdoor fresh air is used independently, the cleanliness of the outdoor air is not high, so that the fresh air filtering device of the unit is frequently replaced, the investment is increased, and the air supply requirement of a machine room cannot be met in some time periods.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fresh air and the special unit of air-out computer lab of the multiprocessing surface series-parallel connection of return air, its compact structure, it is multiple functional, through adjusting device, can realize the different operational mode of unit return air and fresh air, reduce air conditioning unit's operation energy consumption, the evaporation refrigeration supplies the cold water installation to prepare cold water, and the operation of the cold water closed type in air conditioning unit's surface heat exchanger improves the security.

The purpose of the utility model is realized like this: a machine set special for a fresh air and return air multi-processing surface series-parallel air outlet machine room is divided into an air inlet chamber and an air supply chamber in a machine case of the machine set, a fresh air inlet with an opening and closing device is arranged on the box wall at one side of the air inlet chamber, a return air inlet with an opening and closing device is arranged on the box wall at the other side, the return air inlet is connected with a return air duct, a surface heat exchanger corresponding to the fresh air inlet is arranged in the air inlet chamber at the fresh air inlet, meanwhile, the air inlet side of the surface heat exchanger is communicated with the air return duct, the air outlet side of the surface heat exchanger positioned below the air return duct is provided with a direct evaporation refrigerating device, an air filter is arranged on the air inlet side of the surface heat exchanger or the air outlet side of the direct evaporation refrigerating device, the bottom surface of the air inlet chamber between the surface heat exchanger and the direct evaporation refrigerating device is provided with a regulating device, and an air feeder is arranged at an air feeding opening in the air feeding chamber.

The utility model closes the fresh air inlet in most time periods all year round, opens the adjusting device, cools and cools the return air through the surface heat exchanger, and sends the return air out by the blower after passing through the return air filter; in a part of time period, opening a fresh air inlet, closing an air return inlet and a regulating device, carrying out wet cooling on fresh air by a surface type heat exchanger and the like, and then cooling by a direct evaporation refrigerating device and then sending the cooled fresh air into a room; through adjusting device, realized the different operational modes of unit return air and new trend and return air and new trend simultaneous operation, reduced air conditioning unit's operation energy consumption simultaneously, unit compact structure is multiple functional. The cold water is produced by the cold water supply device for evaporative refrigeration, and the cold water in the surface heat exchanger of the air conditioning unit operates in a closed mode, so that the safety is improved.

Advantages of

1. The unit comprises a return air inlet and a fresh air inlet, and the return air or the fresh air or the return air and the fresh air are sent into a room after being subjected to cooling and filtering treatment.

2. The adjusting device is arranged between the surface type heat exchanger and the direct evaporation refrigerating device, and when the return air is used for refrigerating, the adjusting device is started, so that the operation energy consumption of the air feeder is reduced.

3. The air filter is arranged on the air inlet side of the surface heat exchanger, and the return air and the fresh air share one air filter, so that the unit cost is reduced, and the maintenance cost of the filter is reduced.

4. The precooling surface cooler of the indirect evaporation water chilling unit realizes closed precooling on the secondary side of the plate heat exchanger, and the cold carrying medium is antifreeze fluid which plays a role in anti-freezing protection during operation in winter.

The utility model discloses compact structure, it is multiple functional, through adjusting device, realized the different operational mode of unit return air and new trend and return air and new trend simultaneous operation, reduce air conditioning unit's operation energy consumption, the evaporation refrigeration supplies the cooling water installation to prepare cold water, and the operation of the cold water closed type in air conditioning unit's surface heat exchanger improves the security.

Drawings

Next, it will be right to combine the accompanying drawing to describe the utility model, fig. 1 is the utility model discloses embodiment 1 schematic structure diagram, fig. 2 is the utility model discloses embodiment 2 schematic structure diagram, fig. 3 is the utility model discloses embodiment 3 schematic structure diagram, fig. 4 is the utility model discloses embodiment 4 schematic structure diagram, fig. 5 is the utility model discloses embodiment 5 schematic structure diagram, fig. 6 is the utility model discloses embodiment 6 schematic structure diagram, fig. 7 is the utility model discloses embodiment 7 schematic structure diagram, fig. 8 is the utility model discloses embodiment 8 schematic structure diagram, fig. 9 is the utility model discloses embodiment 9 schematic structure diagram, fig. 10 is the utility model discloses embodiment 10 schematic structure diagram, fig. 11 is the utility model discloses embodiment 11 schematic structure diagram, fig. 12 is the utility model discloses embodiment 12 schematic structure diagram, fig. 13 is the utility model discloses embodiment 13 schematic structure diagram.

Detailed Description

A fresh air and return air multi-processing surface series-parallel connection air-out machine room special machine set is divided into an air inlet chamber and an air supply chamber in a machine case of the machine set as shown in figure 1, a first fresh air inlet 1 with an opening and closing device is arranged on a box wall on one side of the air inlet chamber, a return air inlet 2 with an opening and closing device is arranged on a box wall on the other side, the return air inlet 2 is connected with a return air duct, a surface type heat exchanger 3 corresponding to the first fresh air inlet 1 is arranged in the air inlet chamber at the first fresh air inlet 1, the air inlet side of the surface type heat exchanger 3 is communicated with the return air duct, a first direct evaporation refrigerating device 4 is arranged on the air outlet side of the surface type heat exchanger 3 positioned below the return air duct, an air filter 5 is arranged on the air inlet side of the surface type heat exchanger 3 or the air outlet side of the first direct evaporation refrigerating device 4, a first adjusting device 6 is arranged on the bottom surface of the, a blower 8 is attached to the air outlet 7 in the air blowing chamber. Air cleaner 5 sets up the air inlet side at surface formula heat exchanger 3, because return air and new trend all need pass through filtration purification treatment, consequently sets up a set of air cleaner 5, has reduced the unit cost, has also reduced the maintenance cost of filter simultaneously.

As shown in fig. 2, a return air filter 9 is provided in the blowing chamber between the first regulator 6 and the blower 8, and the return air filter is disposed across the blowing chamber. During the return air operating mode, return air import 2 opens, first adjusting device 6 opens, first fresh air import 1 closes, the return air is through the cooling of surface heat exchanger 3, rethread first adjusting device 6, most return air is seen off by the forced draught blower after passing through return air filter 9 processing, during the new trend operating mode, first fresh air import 1 opens, return air import 2 and first adjusting device 6 close, the new trend is through the cooling of surface heat exchanger 3, through the cooling of first direct evaporation refrigerating plant 4 humidification, see off by the forced draught blower after the processing of new trend air filter 5 afterwards. The first adjusting device 6 may be an air volume adjusting valve, and the first adjusting device 6 may function to open, close and adjust the air volume.

As shown in fig. 3 and 4, a second fresh air inlet 26 with an opening and closing device is arranged on the other side wall of the blowing chamber corresponding to the blowing port 7, and a second direct evaporation refrigerating device 27 is arranged at the second fresh air inlet 26. A second fresh air inlet 26 and a second direct evaporation refrigerating device 27 are added, an air opening and closing device is arranged on the second fresh air inlet 26, in a part of time period, the second fresh air inlet 26 is opened, an air opening and closing device on the return air inlet and the first fresh air inlet 1 is closed, an adjusting device is closed, fresh air enters the second direct evaporation refrigerating device 27 through the second fresh air inlet 26, the fresh air is sent out by a blower after being directly evaporated and cooled, fresh air operation is achieved, and operation energy consumption of the blower is reduced.

As shown in fig. 5, a second fresh air inlet 26 and a first fresh air inlet 1 are arranged on the box wall of one side of the air inlet chamber from top to bottom, a return air inlet 2 with an opening and closing device is arranged on the box wall of the other side, an air channel of the surface heat exchanger 3 which is obliquely arranged is communicated with the first fresh air inlet 1 and the return air inlet 2, a first adjusting device 6 with an opening and closing device is arranged on the bottom surface of the air inlet chamber between the lower end of the first fresh air inlet 1 and the bottom surface of the air inlet chamber, an air inlet side of the first direct evaporation refrigerating device 4 is also communicated with the second fresh air inlet 26, and a second adjusting device 28 is arranged on the air outlet side of the air filter 5 which is positioned on the air outlet side of the first. A second fresh air inlet 26 and a second adjusting device 28 are added, the surface type heat exchanger 3 is obliquely arranged, an air port opening and closing device is arranged on the second fresh air inlet 26, the second fresh air inlet 26 and the second adjusting device 28 are opened in a part of time period, air port opening and closing devices on the return air inlet 2 and the first fresh air inlet 1 are closed, the second adjusting device 28 is closed, fresh air enters the first direct evaporation refrigerating device 4 from the second fresh air inlet 26, is filtered by the air filter 5 and is sent out by the air feeder 8 through the second adjusting device 28, a fresh air direct evaporation refrigerating mode of the unit is realized, and the operation energy consumption of the air feeder is reduced; when the unit runs in a return air mode, the air inlet opening and closing device and the first adjusting device 6 on the return air inlet 2 are opened, the air inlet opening and closing devices and the second adjusting device 28 on the first fresh air inlet 1 and the second fresh air inlet 26 are closed, the return air is cooled through the surface heat exchanger 3, filtered through the first adjusting device 6 and the return air filter 9, and sent out by the blower 8; the other mode of the fresh air operation of the unit is as follows: the method comprises the steps of opening an air port opening and closing device and a second adjusting device 28 on a first fresh air inlet 1, closing air port opening and closing devices on a return air inlet 2 and a second fresh air inlet 26, closing a first adjusting device 6, cooling fresh air through a surface type heat exchanger 3, cooling through a first direct evaporation refrigerating device 4, filtering through an air filter 5, sending the fresh air out through a blower 8 through the second adjusting device 28, and obliquely setting the surface type heat exchanger 3 to realize the direct evaporation refrigerating operation mode of the fresh air of the first direct evaporation refrigerating device 4.

As shown in figures 6 and 7, the inlet and outlet pipes of the surface heat exchanger 3 are connected with the water outlet and the water inlet of the evaporative cooling water supply device through pipes, the structure is that the upper part of the case is provided with an exhaust cavity with an exhaust outlet, the exhaust outlet is provided with an exhaust fan 10, the side wall of the exhaust cavity is provided with a third air inlet 11 with an opening and closing device, the lower part of the exhaust cavity is sequentially provided with a spraying device 12, a filler 13 and a water tank 14, the side wall of the case between the filler 13 and the water tank 14 is provided with an air inlet, the side part of the case is provided with an air box connected with the third air inlet 11 and the air inlet, the lower part of the air box is provided with a first air inlet 15 corresponding to the air inlet, the first air inlet 15 is provided with a first surface cooler 16, the air box at the upper part of the first air inlet 15 is provided with a fourth air inlet 17 with an opening and closing device, the outlet pipe of the water tank 14 is connected with the primary side inlet of a first plate, the outlet pipe of the first plate heat exchanger 19 is connected to the shower unit 12, the outlet pipe of the second side is connected to the inlet of the surface heat exchanger 3 through the second water pump 20, and the outlet pipe is connected to the inlet of the first surface cooler 16. The evaporative refrigeration cold water supply device is used for preparing cold water, and comprises a first surface air cooler 16, a filler 13, a third air inlet 11, a fourth air inlet 17 and an exhaust fan 10, wherein air inlet opening and closing devices are arranged on the third air inlet 11 and the fourth air inlet 17, so that multifunctional operation of the evaporative refrigeration cold water supply device is realized through air inlet switching, different operation modes are realized in different time periods according to different meteorological conditions by switching the flow direction of air, the structure is simple, the switching is convenient, and the application range is wide; the first operation function is as follows: the third and

fourth air inlets

11 and 17 are closed, outdoor air enters the first surface air cooler 16 through the first air inlet 15, the air enters the filler 13 to prepare cold water after being subjected to equal humidity cooling, the air with the increased temperature and humidity is discharged through the exhaust fan 10, the running of the water chilling unit is realized, the cold water in the water tank 14 enters the primary side of the first plate heat exchanger 19 through the first water pump 18, the effluent water on the primary side of the first plate heat exchanger 19 returns to the filler 13 for spraying and cooling, the cold water on the secondary side of the first plate heat exchanger 19 enters the surface heat exchanger 3 for cooling indoor return air or outdoor fresh air, the return air or fresh air is sent out through the blower 8 after the temperature of the return air or the fresh air is reduced, the effluent water of the surface heat exchanger 3 enters the fresh air of the first surface air cooler 16, and the effluent water of; the second operation function is as follows: when the temperature of the outlet water of the surface-type heat exchanger 3 is high and the outdoor fresh air cannot be effectively precooled in the first surface air cooler 16, the third air inlet 11 is closed, the fourth air inlet 17 is opened, most of the outdoor air directly enters the filler 13 through the fourth air inlet 17 to prepare cold water, and the fresh air does not pass through the first surface air cooler 16, so that the operation energy consumption of the exhaust fan 10 is reduced; the third function of operation: the fourth air inlet 17 is closed, the third air inlet 11 is opened, outdoor air enters the first surface air cooler 16 through the first air inlet 15, the air is discharged from the exhaust fan 10 through the third air inlet 11, spray water of the filler 13 is closed, and the outlet water of the surface heat exchanger 3 is cooled by outdoor low-temperature air through the first surface air cooler 16, so that dry cooling is realized.

As shown in fig. 8 and 9, the inlet and outlet pipes of the surface heat exchanger 3 are connected to the water outlet and the water inlet of the evaporative cooling cold water supply device through pipes, and the structure thereof is that the upper part of the case of the direct evaporative cooling cold supply device is provided with an exhaust chamber with an exhaust outlet, the exhaust outlet is provided with an exhaust fan 10, the side wall of the exhaust chamber is provided with a third air inlet 11 with an opening and closing device, the lower part of the exhaust chamber is sequentially provided with a spray device 12, a filler 13 and a water tank 14, the side wall of the case between the filler 13 and the water tank 14 is provided with an air inlet port, the side part of the case is provided with a bellows connected with the third air inlet 11 and the air inlet port, the lower part of the bellows is provided with a first air inlet 15 corresponding to the air inlet port, the first air inlet 15 is provided with a first surface cooler 16, the bottom surface of the bellows between the air inlet port and the first surface cooler 16 is provided with a second air inlet 21, a second surface air cooler 22 transversely separating the air box is arranged in the air box between a second air inlet 21 and the first surface air cooler 16, a fourth air inlet 17 with an opening and closing device is arranged on the air box at the upper part of the first air inlet 15, an outlet pipe of the water tank 14 is connected with an inlet at the primary side of the first plate heat exchanger 19 through a first water pump 18, an outlet pipe of the water tank is connected with the spraying device 12, an outlet pipe at the secondary side of the first plate heat exchanger 19 is connected with an inlet of the surface heat exchanger 3 through a second water pump 20, an outlet pipe of the water tank is connected with an inlet of the first surface air cooler 16, an outlet pipe of the water tank is connected with an inlet at the secondary side of the first plate heat exchanger 19, a bypass is arranged on a pipeline of the first water pump 18 connected with the inlet at the primary side of the first plate heat exchanger 19, the outlet pipe. The evaporative refrigeration cold water supply device prepares cold water, wherein the evaporative refrigeration cold water supply device comprises a first surface air cooler 16, a second surface air cooler 22, a filler 13, a second air inlet 21, a third air inlet 11 and an exhaust fan 10, wherein air inlet opening and closing devices are arranged on the second air inlet 21 and the third air inlet 11, the air inlets are switched, multifunctional operation of the evaporative refrigeration cold water supply device is realized, the flow direction of air is switched, different operation modes are realized in different time periods according to different meteorological conditions, the structure is simple, the switching is convenient, and the application range is wide. The first operation function is as follows: the second, third and

fourth air inlets

21, 11 and 17 are closed, outdoor air enters the first and second

surface air coolers

16 and 22 through the first air inlet 15, the air enters the filler 13 after being subjected to equal humidity cooling to prepare cold water, the air with increased temperature and humidity is discharged through the exhaust fan 10, the operation of an indirect evaporation water chilling unit is realized, the cold water in the water tank 14 passes through the first water pump 18, one part of the cold water is used for precooling fresh air by the second surface air cooler 22, the other part of the cold water enters the primary side of the first plate heat exchanger 19, the outlet water of the second surface air cooler 22 and the return water of the primary side of the first plate heat exchanger 19 enter the filler 13 for spraying and cooling, the cold water on the secondary side of the first plate heat exchanger 19 enters the surface heat exchanger 3 to cool indoor return air or outdoor fresh air, and the return; the second operation function is as follows: when the temperature of the outlet water of the surface-type heat exchanger 3 is high and the outdoor fresh air cannot be effectively precooled in the first surface-air cooler 16, the second air inlet 21 and the third air inlet 11 are closed, the fourth air inlet 17 is opened, most of the outdoor air enters the second surface-air cooler 22 through the fourth air inlet 17 for precooling, and the fresh air does not pass through the first surface-air cooler 16, so that the operation energy consumption of the exhaust fan 10 is reduced; the third function of operation: the third and

fourth air inlets

11 and 17 are closed, the second air inlet 21 is opened, most of outdoor air enters the filler 13 through the second air inlet 21 to prepare cold water, and the operation of the cooling tower is realized; a fourth operational function: the second and

fourth air inlets

21 and 17 are closed, the third air inlet 11 is opened, outdoor air enters the first surface air cooler 16 through the first air inlet 15, the air is discharged from the exhaust fan 10 through the third air inlet 11, the spray water system is closed, and the outlet water of the surface heat exchanger 3 is cooled by outdoor low-temperature air through the first surface air cooler 16, so that dry cooling is realized.

As shown in fig. 10 and 11, the inlet and outlet of the surface heat exchanger 3 are connected to the water outlet and inlet of the evaporative cooling cold water supply device through pipes, and the structure is that the upper part of the case of the direct evaporative cooling cold water supply device is provided with an exhaust chamber with an exhaust port, the exhaust port is provided with an exhaust fan 10, the side wall of the exhaust chamber is provided with a third air inlet 11 with an opening and closing device, the lower part of the exhaust chamber is provided with a spray device 12, a filler 13 and a water tank 14 in sequence, the side wall of the case between the filler 13 and the water tank 14 is provided with an air inlet port, the side part of the case is provided with a bellows connecting the third air inlet 11 and the inlet port, the lower part of the bellows is provided with a fourth air inlet 17 and a first air inlet 15 with an opening and closing device, the first air inlet 15 is provided with a first surface cooler 16, a second surface cooler 22 transversely separating the lower end of the first surface cooler 16 from the air inlet port is provided between the, a second air inlet 21 with an opening and closing device is arranged on the bottom surface of the air box between the lower end of the second surface air cooler 22 and an air inlet port, a fifth air inlet 23 with an opening and closing device is arranged on the air inlet port, an outlet pipe of the water tank 14 is connected with an inlet on the primary side of the first plate heat exchanger 19 through a first water pump 18, an outlet pipe of the water tank is connected with the spraying device 12, an outlet pipe on the secondary side of the first plate heat exchanger 19 is connected with an inlet of the surface heat exchanger 3 through a second water pump 20, an outlet pipe of the water tank is connected with an inlet of the first surface air cooler 16, a bypass is arranged on a pipeline of the first water pump 18 connected with the inlet on the primary side of the first plate heat exchanger 19, the inlet of the second surface air cooler 22 is connected through the bypass. The fifth air inlet 23 is formed in the air inlet of the filler 13, the air inlet opening and closing device is arranged on the fifth air inlet 23, the fifth air inlet 23 is arranged to open the air inlet opening and closing device of the third air inlet 11 and close the air inlet opening and closing device of the fifth air inlet 23 when the air conditioner runs in winter, outdoor low-temperature air enters the water outlet of the first surface air cooler 16 cooling unit, and the potential safety hazard that a small part of low-temperature air possibly enters the filler and is frozen due to the fact that water cannot be completely emptied is avoided.

As shown in fig. 12 and 13, the inlet and outlet pipes of the surface heat exchanger 3 are connected to the water outlet and the water inlet of the evaporative cooling cold water supply device through pipes, and the structure thereof is that the upper part of the case of the direct evaporative cooling cold supply device is provided with an exhaust chamber with an exhaust port, the exhaust port is provided with an exhaust fan 10, the side wall of the exhaust chamber is provided with a third air inlet 11 with an opening and closing device, the lower part of the exhaust chamber is provided with a spray device 12, a filler 13 and a water tank 14 in sequence, the side wall of the case between the filler 13 and the water tank 14 is provided with an air inlet port, the side part of the case is provided with a bellows connected with the third air inlet 11 and the air inlet port, the lower part of the bellows is provided with a first air inlet 15 corresponding to the air inlet port, the first air inlet 15 is provided with a first surface cooler 16, the bottom surface of the bellows between the air inlet port and the first surface cooler 16 is provided with a second air inlet, a second surface air cooler 22 transversely separated from the air box is arranged in the air box between a second air inlet 21 and the first surface air cooler 16, a fifth air inlet 23 with an opening and closing device is arranged on an air inlet port, a fourth air inlet 17 with an opening and closing device is arranged on the air box at the upper part of the first air inlet 15, an outlet pipe of the water tank 14 is connected with a primary side inlet of a first plate type heat exchanger 19 through a first water pump 18, an outlet pipe of the water tank is connected with a spraying device 12, a bypass is arranged on a pipeline of the first water pump 18 connected with the primary side inlet of the first plate type heat exchanger 19, an inlet of the second surface air cooler 22 is connected through the bypass, an outlet pipe of the water tank is connected with the spraying device 12, an outlet pipe of the secondary side of the first plate type heat exchanger 19 is connected with an inlet of the surface type heat exchanger 3 through a second water pump 20, an outlet pipe of the water tank is connected with a secondary side inlet of a, the outlet pipe of the first surface cooler 16 is connected to the inlet of the primary side of the second plate heat exchanger 25 via a third water pump 24, and the outlet pipe of the primary side thereof is connected to the inlet of the first surface cooler 16. A second plate heat exchanger 25 and a third circulating pump 24 are added, the outlet water on the secondary side of the first plate heat exchanger 19 enters the surface heat exchanger 3, the outlet water of the surface heat exchanger 3 is connected with the inlet on the secondary side of the second plate heat exchanger 25, the outlet on the secondary side of the second plate heat exchanger 25 is connected with the inlet on the secondary side of the first plate heat exchanger 19, the primary side of the second plate heat exchanger 25 is connected with the inlet and outlet of the first surface cooler 16, the purpose of the second plate heat exchanger 25 is that when the device is operated in winter, a spray water system is closed, the cold-carrying medium is cooled by using outdoor low-temperature air through the first surface cooler 16, in order to prevent freezing, an antifreeze solution circulates between the primary side of the second plate heat exchanger 25 and the first surface cooler 16, and the cold-carrying medium circulating between the secondary side of the second plate heat exchanger 25 and the secondary side of the first plate heat, the unit is ensured to be safe from freezing, and simultaneously, the water is used as a cold carrying medium, so that the heat exchange efficiency of the surface type heat exchanger 3 is improved.

An expansion constant pressure device is arranged on a circulating pipeline between the secondary side of the first plate type heat exchanger 19 and the first surface cooler 16. And the cold-carrying medium between the secondary side 19 of the plate heat exchanger and the first surface cooler 16 runs in a closed mode, and an expansion constant-pressure device is arranged to ensure the safe running of the system.

Claims

1. The utility model provides a special unit of air-out computer lab is connected in series and in parallel to fresh air and the multiprocessing surface of return air, characterized by: the machine case of the unit is divided into an air inlet chamber and an air supply chamber, the wall of one side of the air inlet chamber is provided with a first fresh air inlet (1) with a start-stop device, the wall of the other side of the air inlet chamber is provided with a return air inlet (2) with a start-stop device, the return air inlet (2) is connected with a return air duct, the air inlet chamber positioned at the first fresh air inlet (1) is internally provided with a surface type heat exchanger (3) corresponding to the first fresh air inlet (1), the air inlet side of the surface type heat exchanger (3) is communicated with the return air duct, the air outlet side of the surface type heat exchanger (3) positioned below the return air duct is provided with a first direct evaporation refrigerating device (4), the air filter (5) is arranged at the air inlet side of the surface type heat exchanger (3) or the air outlet side of the first direct evaporation refrigerating device (4), and the bottom surface of the air inlet chamber between the surface type heat exchanger (3) and the, a blower (8) is mounted on the air outlet (7) in the air supply chamber.

2. The fresh air and return air multi-processing surface series-parallel air-out machine set special for the machine room as claimed in claim 1, which is characterized in that: an air return filter (9) transversely separating the air supply chamber is arranged in the air supply chamber between the first adjusting device (6) and the air supply machine (8).

3. The fresh air and return air multi-processing surface series-parallel air outlet machine set special for the machine room as claimed in claim 1 or 2, which is characterized in that: a second fresh air inlet (26) with an opening and closing device is arranged on the box wall of the other side of the air supply chamber corresponding to the air supply outlet (7), and a second direct evaporation refrigerating device (27) is arranged at the second fresh air inlet (26).

4. The fresh air and return air multi-processing surface series-parallel air outlet machine set special for the machine room as claimed in claim 1 or 2, which is characterized in that: a second fresh air inlet (26) and a first fresh air inlet (1) are arranged on the box wall on one side of an air inlet chamber from top to bottom, a return air inlet (2) with an opening and closing device is arranged on the box wall on the other side, an air channel of the obliquely arranged surface type heat exchanger (3) is communicated with the first fresh air inlet (1) and the return air inlet (2), a first adjusting device (6) with an opening and closing device is arranged on the bottom surface of the air inlet chamber between the lower end of the surface type heat exchanger and the first fresh air inlet (1), the air inlet side of the first direct evaporation refrigerating device (4) is also communicated with the second fresh air inlet (26), and a second adjusting device (28) is arranged on the air outlet side of an air filter (5) positioned on the air outlet side of the first direct evaporation refrigerating device (4).

5. The fresh air and return air multi-processing surface series-parallel air outlet machine set special for the machine room as claimed in claim 1 or 2, which is characterized in that: the inlet and outlet pipes of the surface heat exchanger (3) are connected with an evaporative refrigeration cold water supply device through pipelines, the structure is that the upper part of a case is provided with an exhaust cavity with an exhaust outlet, an exhaust fan (10) is arranged on the exhaust outlet, the side wall of the exhaust cavity is provided with a third air inlet (11) with an opening and closing device, the lower part of the exhaust cavity is sequentially provided with a spraying device (12), a filler (13) and a water tank (14), the side wall of the case between the filler (13) and the water tank (14) is provided with an air inlet port, the side part of the case is provided with an air box which is connected with the third air inlet (11) and the air inlet port, the lower part of the air box is provided with a first air inlet (15) corresponding to the air inlet port, the first surface cooler (16) is arranged at the first air inlet (15), and the fourth air inlet (17) with an opening and closing device is arranged on the air box at the upper part of, an outlet pipe of the water tank (14) is connected with an inlet of a primary side of the first plate type heat exchanger (19) through a first water pump (18), an outlet pipe of the water tank is connected with the spraying device (12), an outlet pipe of a secondary side of the first plate type heat exchanger (19) is connected with an inlet of the surface type heat exchanger (3) through a second water pump (20), and an outlet pipe of the water tank is connected with an inlet of the first surface cooler (16).

6. The fresh air and return air multi-processing surface series-parallel air outlet machine set special for the machine room as claimed in claim 1 or 2, which is characterized in that: the inlet and outlet pipes of the surface heat exchanger (3) are connected with the water outlet and the water inlet of an evaporative cooling water supply device through pipelines, the structure is that the upper part of a chassis of the direct evaporative cooling device is provided with an exhaust cavity with an exhaust outlet, an exhaust fan (10) is arranged on the exhaust outlet, the side wall of the exhaust cavity is provided with a third air inlet (11) with an opening and closing device, the lower part of the exhaust cavity is sequentially provided with a spraying device (12), a filler (13) and a water tank (14), the side wall of the chassis between the filler (13) and the water tank (14) is provided with an air inlet port, the side part of the chassis is provided with an air box which is connected with the third air inlet (11) and the air inlet port, the lower part of the air box is provided with a first air inlet (15) corresponding to the air inlet port, the first surface cooler (16) is arranged at the first air inlet (15), and the bottom surface of the air box between the air inlet port and the first surface cooler (16) is provided with a second air inlet A second surface air cooler (22) transversely separated from the air box is arranged in the air box between a second air inlet (21) and the first surface air cooler (16), a fourth air inlet (17) with an opening and closing device is arranged on the air box at the upper part of the first air inlet (15), an outlet pipe of the water tank (14) is connected with an inlet at the primary side of the first plate type heat exchanger (19) through a first water pump (18), an outlet pipe of the water tank is connected with a spraying device (12), an outlet pipe at the secondary side of the first plate type heat exchanger (19) is connected with an inlet of the surface type heat exchanger (3) through a second water pump (20), an outlet pipe of the water tank is connected with an inlet of the first surface air cooler (16), an outlet pipe of the water tank is connected with an inlet at the secondary side of the first plate type heat exchanger (19), a bypass is arranged on a pipeline connecting the primary side inlet of the first water pump (18) with the first plate type heat exchanger (19), the outlet pipe of the device is connected with a spraying device (12).

7. The fresh air and return air multi-processing surface series-parallel air outlet machine set special for the machine room as claimed in claim 1 or 2, which is characterized in that: the inlet and the outlet of the surface heat exchanger (3) are connected with the water outlet and the water inlet of an evaporative refrigeration cold water supply device through pipelines, the structure is that the upper part of a case of the direct evaporative refrigeration cold water supply device is provided with an exhaust cavity with an exhaust outlet, an exhaust fan (10) is arranged on the exhaust outlet, the side wall of the exhaust cavity is provided with a third air inlet (11) with an opening and closing device, the lower part of the exhaust cavity is sequentially provided with a spraying device (12), a filler (13) and a water tank (14), the side wall of the case between the filler (13) and the water tank (14) is provided with an air inlet port, the side part of the case is provided with an air box which is connected with the third air inlet (11) and the inlet port, the lower part of the air box is provided with a fourth air inlet (17) and a first air inlet (15) with the opening and closing device, and the first surface cooler (16) is arranged on, a second surface air cooler (22) crossing the air box is arranged between the lower end of the first surface air cooler (16) and the air inlet port, a second air inlet (21) with an opening and closing device is arranged on the bottom surface of the air box between the lower end of the second surface air cooler (22) and the air inlet port, a fifth air inlet (23) with an opening and closing device is arranged on the air inlet port, an outlet pipe of the water tank (14) is connected with an inlet on the primary side of the first plate type heat exchanger (19) through a first water pump (18), an outlet pipe of the water tank is connected with a spraying device (12), an outlet pipe on the secondary side of the first plate type heat exchanger (19) is connected with an inlet of the surface type heat exchanger (3) through a second water pump (20), an outlet pipe of the water tank is connected with an inlet of the first surface air cooler (16), a bypass is arranged on a pipeline connecting the primary side inlet of the first plate type heat exchanger (19) with the first water pump (18), and is, the outlet pipe of the device is connected with a spraying device (12).

8. The fresh air and return air multi-processing surface series-parallel air outlet machine set special for the machine room as claimed in claim 1 or 2, which is characterized in that: the inlet and outlet pipes of the surface heat exchanger (3) are connected with the water outlet and the water inlet of an evaporative cooling water supply device through pipelines, the structure is that the upper part of a chassis of the direct evaporative cooling device is provided with an exhaust cavity with an exhaust outlet, an exhaust fan (10) is arranged on the exhaust outlet, the side wall of the exhaust cavity is provided with a third air inlet (11) with an opening and closing device, the lower part of the exhaust cavity is sequentially provided with a spraying device (12), a filler (13) and a water tank (14), the side wall of the chassis between the filler (13) and the water tank (14) is provided with an air inlet port, the side part of the chassis is provided with an air box which is connected with the third air inlet (11) and the air inlet port, the lower part of the air box is provided with a first air inlet (15) corresponding to the air inlet port, the first surface cooler (16) is arranged at the first air inlet (15), and the bottom surface of the air box between the air inlet port and the first surface cooler (16) is provided with a second air inlet A second surface air cooler (22) transversely separated from the air box is arranged in the air box between a second air inlet (21) and the first surface air cooler (16), a fifth air inlet (23) with an opening and closing device is arranged on an air inlet port, a fourth air inlet (17) with an opening and closing device is arranged on the air box at the upper part of the first air inlet (15), an outlet pipe of the water tank (14) is connected with an inlet at the primary side of the first plate type heat exchanger (19) through a first water pump (18), an outlet pipe of the water tank is connected with a spraying device (12), a bypass is arranged on a pipeline of the first water pump (18) connected with the inlet at the primary side of the first plate type heat exchanger (19), the inlet of the second surface air cooler (22) is connected through the bypass, the outlet pipe of the first plate type heat exchanger (19) is connected with the spraying device (12), an outlet pipe at the secondary side of the first plate type heat exchanger (19) is connected with an, the outlet pipe of the second surface cooler is connected with the inlet of the secondary side of the second plate heat exchanger (25), the outlet pipe of the secondary side of the second surface cooler (22) is connected with the inlet of the secondary side of the first plate heat exchanger (19) through a third water pump (24), and the outlet pipe of the primary side of the second surface cooler is connected with the inlet of the first surface cooler (16).