CN212253004U - Two-stage indirect evaporative cooling air conditioning unit - Google Patents
Two-stage indirect evaporative cooling air conditioning unit Download PDFInfo
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- CN212253004U CN212253004U CN202021160550.7U CN202021160550U CN212253004U CN 212253004 U CN212253004 U CN 212253004U CN 202021160550 U CN202021160550 U CN 202021160550U CN 212253004 U CN212253004 U CN 212253004U
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Abstract
The utility model relates to an indirect evaporative cooling air conditioning unit of doublestage, including evaporative cooling system, locate the inside heat transfer core of unit casing, outdoor crosswind runner, indoor crosswind runner, outdoor crosswind runner flows through the outdoor air passageway of heat transfer core, indoor crosswind runner flows through the indoor air passageway of heat transfer core, evaporative cooling system has two sets at least, and every set of evaporative cooling system all is equipped with the nozzle, and one of them set of evaporative cooling system's nozzle is located the position from outdoor side air intake to between the heat transfer core of outdoor crosswind runner to be used for aiming at the heat transfer core sprays, and another set of evaporative cooling system's nozzle is located the position from the heat transfer core to between the outdoor side air outlet of outdoor crosswind runner, and is used for aiming at the heat transfer core sprays. The utility model discloses possess the doublestage and spout, can each other be for backing up, can improve wet operating mode operating range and unit efficiency.
Description
Technical Field
The utility model relates to an air conditioner field, in particular to indirect evaporative cooling air conditioning unit of doublestage.
Background
As shown in patent documents CN201822222249.3 and CN201821974088.7, an indirect evaporative air conditioning system for a data center generally includes a water spray system, an inside air system, an outside air system, a heat exchange core that exchanges heat between inside air and outside air, and an auxiliary cooling system. And there are three main modes of operation: dry mode, wet mode + mixed mode of mechanical refrigeration (or other means of cold replenishment such as chilled water coil replenishment). When the application environment temperature is lower, the dry mode is operated, the water spraying system at the outer side of the unit is not started, and the air at the outer side of the unit and the air at the inner side of the unit are refrigerated through heat exchange by the heat exchange core body; when the application environment is mild, the wet mode is operated, the unit spraying system is started at the moment, and after water is evaporated to cool the air outside the room, heat exchange is carried out through the heat exchange core body, so that the temperature of the air inside the room is reduced; when the outdoor environment temperature is high in dry bulb temperature and high in wet bulb temperature, the spraying system and the auxiliary cold supplement system are started at the same time, and the unit runs a mixed mode.
In the aforesaid, water sprinkling system adopts the single-stage to spray the scheme, when a certain part of water system breaks down, sprays and will unable to open, therefore leads to the indirect evaporation cold of unit to play a role, and unit refrigerating capacity sharply descends, and in addition, under ambient temperature is lower, for avoiding water sprinkling system to be frozen, water sprinkling system generally does not open, can lead to evaporation cooling to obtain make full use of like this, and the unit is annual energy-saving rate descends.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve or the weak point among the partial solution prior art, and provide an indirect evaporative cooling air conditioning unit, it possesses the doublestage and sprinkles, can each other be backup, can improve wet operating mode operating range and unit efficiency.
In order to achieve the above purpose, the technical scheme of the utility model is that:
a two-stage indirect evaporative cooling air conditioning unit comprises an evaporative cooling system, a heat exchange core body arranged in a unit shell, an outdoor side air flow passage used for conveying cold air, and an indoor side air flow passage used for conveying hot air, the outdoor crosswind flow channel flows through the outdoor air channel of the heat exchange core body, the indoor crosswind flow channel flows through the indoor air channel of the heat exchange core body, the evaporative cooling system is provided with at least two sets, each set of evaporative cooling system is provided with a nozzle, wherein the nozzles of one set of evaporative cooling system are positioned at the position between the outdoor side air inlet and the heat exchange core body of the outdoor side air flow passage, and the nozzle of the other set of evaporative cooling system is positioned at the position between the heat exchange core body and the outdoor air outlet of the outdoor side air flow channel and is used for aligning the heat exchange core body to spray.
Further, still include controller and first temperature sensor, first temperature sensor is used for gathering the outdoor crosswind temperature before the heat transfer of heat transfer core body, first temperature sensor, each set of evaporation cooling system are connected to the electricity respectively to the controller.
Furthermore, the outdoor side air temperature collector also comprises a second temperature sensor electrically connected with the controller, and the second temperature sensor is used for collecting the outdoor side air temperature after heat exchange of the heat exchange core body.
Furthermore, the inside second heat exchange core that still is equipped with of unit casing, outdoor crosswind runner flows through the outdoor air passageway of first heat exchange core, second heat exchange core in proper order, indoor crosswind runner flows through the indoor air passageway of first heat exchange core, second heat exchange core in proper order, and the indoor air export of first heat exchange core directly docks the indoor air entry of second heat exchange core, and two sets of evaporative cooling system's nozzle is respectively in the top of first heat exchange core, second heat exchange core to downwards respectively implement to spray to first heat exchange core, second heat exchange core.
Furthermore, each set of evaporative cooling system is a water spraying system.
Furthermore, each set of water spraying system is provided with a water pump and a water distributor, the water distributor comprises a spraying rod and a spray head connected to the spraying rod, the spraying rod is communicated to the corresponding water pump through a pipeline, and the water pumps all take water from the same water tank.
Further, the water tank is located inside the unit housing.
Further, the water tank is located right below the first heat exchange core body and the second heat exchange core body.
Furthermore, a water baffle is arranged in the part of the outdoor side air channel from the outdoor side air outlet to the part communicated with the second heat exchange core body, and the water baffle is positioned above the spray head of the evaporative cooling system and used for retaining water.
Furthermore, a filter covering an outdoor side inlet and an outdoor side outlet of the outdoor side air flow passage is arranged in the outdoor side air flow passage; and/or a filter covering an indoor side inlet and an indoor side outlet is arranged in the indoor side air flow passage.
The utility model adopts a two-stage mode, the outdoor temperature is higher, when a certain spraying system fails, the other spraying system can be normally opened, thereby ensuring that the refrigerating capacity of the unit is not reduced too much when the unit fails in the certain spraying system; meanwhile, at low temperature, after outdoor low-temperature air is subjected to heat exchange with indoor high-temperature air through the heat exchange core, the temperature of the outdoor air rises, and at the moment, the evaporation cooling system positioned after heat exchange can be opened without being frozen, so that compared with the existing spraying stopping scheme, the operation range of the wet working condition and the unit energy efficiency can be improved.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like elements throughout the drawings. In the drawings:
fig. 1 shows a schematic view of the overall structure of the indirect evaporative cooling air conditioning unit of the present invention;
fig. 2 shows the position relationship among the indoor side wind flow passage, the outdoor side wind flow passage and the water tank of the unit of the utility model;
fig. 3 shows a schematic structural view of a two-stage spraying system of the unit of the invention;
fig. 4 shows a schematic structural diagram of a fluorine pump refrigerating system of the unit of the utility model.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The indirect evaporative cooling air conditioning unit of this embodiment is, as shown in fig. 1, composed of a compressor cold compensation system, a fluorine pump refrigeration system, a first spray system, a second spray system, a first heat exchanger core 16, a second heat exchanger core 17, an indoor side air circulation system, and an outdoor side air circulation system.
As shown in fig. 2, in order to achieve compact structure, the inside of the unit casing is divided into 5 chambers by partition plates, namely an outer air inlet chamber a1, an outer air outlet chamber a2, an inner air inlet chamber B1, an inner air outlet chamber B2 and a water tank accommodating chamber C, and the outer air inlet chamber a1 and the outer air outlet chamber a2 are distributed at the upper parts of the left side and the right side of the unit casing, so that cold air can sink conveniently; the inner air inlet chamber B1 and the inner air outlet chamber B2 are distributed in the middle of the left side and the right side in the unit, so that heat exchange is facilitated in the sinking process of cold air; the water tank accommodating cavity C is arranged at the bottom in the unit and used for accommodating the water tank, and the gravity center of the whole machine is moved downwards by using the water tank to stabilize the whole machine.
The first heat exchange core 16 and the second heat exchange core 17 are air-air heat exchangers, an outdoor air inlet of the first heat exchange core 16 is communicated with an outside air inlet chamber A1, an outdoor air outlet is communicated with a water tank accommodating chamber C, an indoor air inlet is communicated with an inside air inlet chamber B1, and an indoor air outlet is communicated with an indoor air inlet of the second heat exchange core 17; an outdoor air inlet of the second heat exchange core 17 is communicated with the water tank accommodating cavity C, an outdoor air outlet is communicated with the outer air outlet chamber a2, an indoor air inlet is communicated with an indoor air outlet of the first heat exchange core 16, and an indoor air outlet is communicated with the inner air outlet chamber B2.
The outdoor side air inlet 5 is formed in the side wall of the outside air inlet chamber a1, the outdoor side air outlet 23 is formed in the side wall of the outside air outlet chamber a2, and the circulating fan 24 is arranged in the outside air outlet chamber a2 to supply air towards the outdoor side air outlet 23, so that the outdoor side air inlet 5, the outside air inlet chamber a1, the outdoor air channel of the first heat exchange core 16, the water tank accommodating chamber C, the outdoor air channel of the second heat exchange core 17, the outside air outlet chamber a2, the circulating fan 24 and the outdoor side air outlet 23 form the outdoor side air circulating system for implementing outdoor side air circulation.
Similarly, an indoor side air inlet 13 for butt-joint to the inside of the data center is formed in the side wall of the inner side air inlet chamber B1, an indoor side air outlet 20 is formed in the side wall of the inner side air outlet chamber B2, and a circulating fan 21 is arranged in the inner side air outlet chamber B2 to supply air towards the indoor side air outlet 20, so that the indoor side air inlet 13, the inner side air inlet chamber B1, an indoor air channel of the heat exchange core bodies 16 and 17, the inner side air outlet chamber B2, the circulating fan 21 and the indoor side air outlet 20 form the indoor side air circulating system and are used for implementing indoor side air circulation.
Further, as shown in fig. 1, a filter 12 covering the indoor air inlet 13 is disposed in the indoor air inlet chamber B1 to filter dust in the indoor air and clean the indoor air.
See fig. 2, during the use, outdoor crosswind gets into the unit and sinks naturally after, sinks the in-process earlier with 16 heat transfer back temperature rises of first heat transfer cores, gets into water tank holding chamber C and water tank 15 contact again, is favorable to the water tank 15 to prevent frostbite, because water tank 15 arranges the unit inside in simultaneously, can avoid water tank 15's water and external wind direct contact, is favorable to restraining the microorganism growth, prevents that the algae growth from blockking up spraying system in the water tank, extension spraying system life.
The outside wind in the water tank holding chamber C is cooled by the water evaporation heat absorption of the water tank at the water tank 15, and is pumped out of the unit by the circulating fan 24, and then exchanges heat with the second heat exchange core body 17 in the flowing process, and at the moment, the indoor side wind is cooled secondarily, and because the outdoor side wind is lower in temperature, the secondary cooling effect is obvious.
Referring to fig. 3, as a preferred embodiment, in order to improve the cooling effect, a spraying system is provided, wherein, in order to increase the wet mode operation range of the unit and improve the heat exchange efficiency of the unit compared with the prior art, the spraying system is divided into two sets, the first spraying system comprises a water pump 14 and a water distributor 7, the second spraying system comprises a water pump 18 and a water distributor 4, and the water pump 14 and the water pump 18 share the same water tank 15.
The water distributor 7 and the water distributor 4 are both composed of spray rods and spray heads connected to the spray rods, and are communicated to corresponding water pumps through respective pipelines respectively, and the water pumps convey water to the water distributors. The water distributor 7 is arranged in the outer side air inlet chamber A1 and is positioned right above the first heat exchange core 16, the water distributor 4 is arranged in the outer side air outlet chamber A2 and is positioned right above the second heat exchange core 17, the water distributor and the second heat exchange core are uniformly sprayed to the heat exchange cores through the spray heads to evaporate and cool the heat exchange cores and enhance heat exchange, and water which is not evaporated flows into the water tank under the action of gravity, so that the water is repeatedly circulated.
For realizing the intelligent control of spraying two sets of systems, set up first temperature sensor 25 at the outdoor air entrance of first heat exchange core 16, set up second temperature sensor 26 at the outdoor air entrance of second heat exchange core 17, first temperature sensor 25, second temperature sensor 26, water pump 14, water pump 18 are electric connection director respectively, then:
when the first temperature sensor 25 detects that the ambient temperature is high (for example, more than 15 ℃), the first spraying system and the second spraying system are simultaneously started, outdoor side air is subjected to heat exchange with indoor side air through the heat exchange cores 16 and 17 after being subjected to evaporative cooling by spraying water, and the indoor side air is cooled;
when the first temperature sensor 25 detects that the ambient temperature is low (for example, less than 2 ℃), at this time, water may be frozen due to direct contact between outdoor side air and water, so the controller stops the water pump 14, the first spraying system is closed to implement protection, at this time, low-temperature air on the outer side exchanges heat with high-temperature air on the indoor side through the first heat exchange core 16, the heated air flows to the second temperature sensor 26, and if the second temperature sensor 26 detects that the dry bulb temperature of the air before entering the second heat exchange core 17 is greater than a set value T1 (for example, 15 ℃), the second spraying system is opened to cool the outdoor side air, so that the indoor side air is further cooled through the second heat exchange core 17.
This embodiment is through setting up two sets of spraying systems and separately controlling it, can effectively avoid water tank, water pump, water pipe to freeze risk such as, improves the temperature range lower limit of wet operating mode operation simultaneously (can not open to spray and further cool down in order to prevent frostbite when originally outdoor crosswind 2 ℃, can also realize spraying after the heat transfer core body heating now), has improved the unit efficiency all the year.
It should be noted that, in this embodiment, the concept of separately providing two sets of spraying systems and separately controlling the spraying systems is not limited to be applied to the specific air flow passage shown in fig. 2, and may also be applied to the existing general indirect evaporative cooling air conditioning unit. When the spray system is applied to other universal indirect evaporative cooling air conditioning units, only the embodiment is needed to be referred, the nozzles of one set of spray system are arranged in the outdoor crosswind channel before heat exchange and are aligned with the heat exchange core body for spraying, the nozzles of the other set of spray system are arranged in the outdoor crosswind channel after heat exchange and are aligned with the heat exchange core body for spraying, and then the control mode of the spray system is referred to for implementing control, so that the aim of improving the lower limit of the temperature range of wet working condition operation is achieved.
It should be noted that, in this embodiment, the spraying system may be replaced by other evaporative cooling systems, such as a spraying system, to achieve the same effect.
Furthermore, as shown in fig. 1, a filter 8 and a water baffle 3 are also arranged in the outdoor side air circulating system, the filter 8 is arranged in the outdoor side air inlet chamber a1 and covers the outdoor side air inlet 5 to filter air microparticles outside the chamber and reduce pollution to the sprayed water quality; the water baffle 3 is arranged in the outer air outlet chamber A2 and covers the outdoor air outlet of the second heat exchange core body 17, so that when the spraying is started, the outdoor side air circulation brings the water vapor out of the unit, and the water utilization rate is improved.
As another preferred embodiment, in order to avoid the problems of excessive condensed water or icing inside the heat exchange core when the ambient temperature is low, and improve the low-temperature refrigeration efficiency of the unit, in this embodiment, the fluorine pump technology is further combined with the indirect evaporative cooling technology, specifically, as shown in fig. 4, a condenser 6 covering the outdoor air inlet 5 is arranged in the outside air inlet chamber a1, an evaporator 11 covering the indoor air inlet of the first heat exchange core 16 is arranged in the inside air inlet chamber B1, and the condenser 6, the fluorine circulating pump 9, the flow control component 10, and the evaporator 11 are sequentially connected through copper pipes to form a loop, thereby forming the fluorine pump refrigeration system.
Among the above, the flow control member 10 is an electronic expansion valve, and if the head difference between the evaporator 11 and the condenser 6 is sufficiently large (larger than 5m), a heat pipe refrigeration system without a fluorine pump may be used.
The fluorine circulation pump 9 and the flow rate control member 10 were electrically connected to the controller, and the following fluorine pump control method was performed by the first temperature sensor 25 in the same manner:
when the first temperature sensor 25 detects that the outdoor temperature is extremely low (for example, less than-20 ℃), the fluorine pump refrigerating system is started by controlling the fluorine circulating pump 9, refrigerant in the fluorine pump system absorbs heat of indoor side air in the evaporator 11 and evaporates into a gas state, then the refrigerant enters the condenser 6 to be condensed and released into a liquid state, so that the outdoor side air entering the unit is heated, the temperature of the outdoor side air is increased, the liquid refrigerant is subjected to frequency conversion regulation by the fluorine circulating pump 9 and is throttled by the flow control component 10 and then returns to the evaporator 11, and in the process, the flow of the liquid refrigerant entering the evaporator 11 is controlled by the frequency conversion and throttling regulation of the fluorine circulating pump 9 and the flow control component 10, so that the evaporation heat exchange quantity is controlled, and the risk of excessive indoor side air condensate water or freezing caused by the excessively low outdoor temperature is reduced.
In addition, still can be connected controller and circulating fan 24 electricity, through reducing circulating fan 24 rotational speed, reduce outdoor crosswind amount of wind to the temperature rise degree of control outdoor crosswind, need to pay attention to and guarantee that the outdoor crosswind after being heated still is less than indoor crosswind before getting into first heat exchange core 16, and then can cool off indoor crosswind through first heat exchange core 16.
This embodiment passes through fluorine pump refrigerating system, at extremely low temperature, with the evaporimeter 11 to the heat absorption of indoor crosswind, the heat shifts to condenser 6 and heats outdoor crosswind, thereby solve the inboard condensation of heat transfer core or freeze the scheduling problem, its ingenious point lies in, the heat is got from the indoor crosswind that needs the cooling, make indoor crosswind accomplish once cooling before not having the heat transfer core, promote the low temperature refrigeration efficiency, the heat is used for the outdoor crosswind that needs to raise the temperature extremely low temperature again, solve the inboard condensation of heat transfer core or freeze the problem, when both protecting the heat transfer core, unit refrigerating capacity and operating efficiency have been improved again, and realize highly utilizing of the energy.
Also, in the present embodiment, the concept of the fluorine pump refrigeration system is not limited to be applied to the specific air flow passage shown in fig. 2, and can also be applied to the existing general indirect evaporative cooling air conditioning unit. When the method is applied to other universal indirect evaporative cooling air conditioning units, only the embodiment is needed to be referred, the condenser 6 is arranged at the air inlet on the outdoor side, the evaporator 11 is arranged at the air inlet on the indoor side, and the air inlet and the evaporator are communicated through the fluorine circulating pump 9 and the flow control part 10 to form a loop.
Further, referring to fig. 1, the condenser 6 should be disposed on the side of the filter 8 away from the outdoor side intake vent 5, and the evaporator 11 should be disposed on the side of the filter 12 away from the indoor side intake vent 13 for protection.
When the fluorine pump refrigeration system and the two-stage spraying system are provided at the same time, the following composite control method can be adopted:
after the fluorine pump refrigerating system is started, if the first temperature sensor 25 detects that the temperature of the air dry bulb before outdoor side air passes through the first heat exchange core 16 is higher than a set value T1(15 ℃), the first spraying system and the second spraying system are simultaneously started;
if the temperature of the air dry bulb before outdoor side air passes through the first heat exchange core 16 is detected to be lower than a set value T1(15 ℃), and the temperature of the air dry bulb before outdoor side air passes through the second heat exchange core 17 is detected to be higher than a set value T1(15 ℃), the first spraying system is closed, and the second spraying system is opened;
if the temperature of the air dry bulb before outdoor side air passes through the first heat exchange core 16 is detected to be less than a set value T1(15 ℃) and the temperature of the air dry bulb before the outdoor side air passes through the second heat exchange core 17 is detected to be less than a set value T1(15 ℃), the first spraying system and the second spraying system are closed simultaneously.
In addition, a compressor cold compensation system can be further provided, as shown in fig. 1, the compressor cold compensation system comprises a condenser 1 arranged in the outer air outlet cavity a2, an evaporator 22 arranged in the inner air outlet cavity B2, a compressor 19 and a throttle valve 2, and the condenser 1, the throttle valve 2, the compressor 19 and the evaporator 22 are sequentially connected through copper pipes to form the compressor cold compensation system.
The compressor 19 and the throttle valve 2 are respectively electrically connected with the controller, the first temperature sensor 25 and the second temperature sensor 26 are used for realizing cold supplement, specifically, when the first temperature sensor 25 detects that the dry bulb temperature and the wet bulb temperature of the outdoor environment are both high, the first spraying system and the second spraying system are controlled to be simultaneously started, and then if the second temperature sensor 26 detects that the indoor air temperature cannot be effectively reduced (for example, the indoor air temperature exceeds 35 ℃), the compressor refrigerating system is started.
The indirect evaporative cooling air conditioning unit of the embodiment has the following advantages as a whole:
1. the problems of condensation, freezing and water system freezing on the inner side of the unit heat exchange core body at extremely low temperature can be effectively solved:
at extremely low temperature, unit fluorine pump refrigerating system opens, the refrigerant is from the heat absorption of the 11 evaporation of indoor side evaporimeter, it is exothermic with outside air heating to shift to outdoor side condensation again, therefore can avoid the direct heat transfer of first heat exchange core 16 of outer air that crosses low, cause 16 inboard condensation of first heat exchange core or freeze the scheduling problem, outside air after the condenser 6 heating of fluorine pump refrigerating system is through first heat exchange core 16 and inboard air heat exchange back simultaneously, heated once more, contact with water system again, therefore can avoid water system freezing and cause the problem such as water pump, the water pipe, spare parts such as water tank frost crack.
2. The refrigerating capacity and the operating efficiency of the unit at extremely low temperature can be improved:
the adopted fluorine pump refrigeration technology is an efficient energy-saving refrigeration system utilizing a natural cold source, and the refrigeration efficiency is extremely high at low temperature, so that the refrigeration capacity and the operation efficiency of a unit can be improved by starting the fluorine pump refrigeration at low temperature, and the energy is saved;
3. adopt doublestage to spray the system, can be for each other backup and can improve wet operating mode operating range:
by adopting a double-stage mode, the outdoor temperature is higher, and when a certain spraying system fails, the other spraying system can be normally started, so that the refrigerating capacity of the unit is not reduced too much when the unit fails in the certain spraying system. Meanwhile, at a low temperature, after the outdoor low-temperature air exchanges heat with the indoor high-temperature air through the first heat exchange core 16, the outdoor air temperature rises. The air before entering the second heat exchange core 17 is already air with relatively high temperature, and at the moment, the second spraying system is started, so that the operation range of the wet working condition and the operation efficiency of the unit are further improved.
4. The water tank is in the environment of relative higher temperature all the time, can effectively solve the water tank problem of freezing, does not need the evacuation water to reduce the water waste:
after the outdoor air exchanges heat with the indoor air through the first heat exchange core body 16, the temperature of the outdoor air rises, and the water tank is positioned below the first heat exchange core body 16 and isolated from the external low-temperature air, so that the water tank is always positioned in a high-temperature environment, the freezing problem of a water system is avoided, meanwhile, the water in the water system is not discharged, and the waste of water resources can be effectively reduced.
It should be finally noted that the above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced with other equivalents without departing from the spirit and scope of the technical solution of the present invention.
Claims (10)
1. A two-stage indirect evaporative cooling air conditioning unit,
including the evaporative cooling system, locate the inside heat transfer core of unit casing, be used for carrying cold wind outdoor crosswind runner, be used for carrying hot-blast indoor crosswind runner, outdoor crosswind runner flows through the outdoor air passageway of heat transfer core, indoor crosswind runner flows through the indoor air passageway of heat transfer core, its characterized in that:
the evaporative cooling system has at least two sets, and every set of evaporative cooling system all is equipped with the nozzle, and one of them set of evaporative cooling system's nozzle is located the position between outdoor side air intake to the heat transfer core of outdoor crosswind runner, and is used for aiming at the heat transfer core sprays, and another set of evaporative cooling system's nozzle is located the position between outdoor side air outlet from the heat transfer core of outdoor crosswind runner, and is used for aiming at the heat transfer core sprays.
2. The two-stage indirect evaporative cooling air conditioning unit of claim 1, wherein: the heat exchanger is characterized by further comprising a controller and a first temperature sensor, wherein the first temperature sensor is used for collecting the outdoor side air temperature before heat exchange of the heat exchange core body, and the controller is electrically connected with the first temperature sensor and each set of evaporative cooling system respectively.
3. The two-stage indirect evaporative cooling air conditioning unit of claim 2, wherein: the outdoor side air temperature sensor is electrically connected with the controller and used for collecting the outdoor side air temperature after heat exchange of the heat exchange core body.
4. The two-stage indirect evaporative cooling air conditioning unit of claim 1, wherein: the inside second heat transfer core that still is equipped with of unit casing, the outdoor crosswind runner flows through the outdoor air passageway of first heat transfer core, second heat transfer core in proper order, the indoor air passageway of first heat transfer core, second heat transfer core is flowed through in proper order to the indoor crosswind runner, and the indoor air entry of the direct butt joint second heat transfer core of indoor air outlet of first heat transfer core, two sets of evaporative cooling system's nozzle are respectively in the top of first heat transfer core, second heat transfer core to downwards respectively implement to spray first heat transfer core, second heat transfer core.
5. The two-stage indirect evaporative cooling air conditioning unit of claim 4, wherein: each set of evaporative cooling system is a water spraying system.
6. The two-stage indirect evaporative cooling air conditioning unit of claim 5, wherein: each set of water spraying system is provided with a water pump and a water distributor, the water distributor comprises a spray rod and a spray head connected to the spray rod, the spray rod is communicated to the corresponding water pump through a pipeline, and each water pump takes water from the same water tank.
7. The two-stage indirect evaporative cooling air conditioning unit of claim 6, wherein: the water tank is located inside the unit housing.
8. The two-stage indirect evaporative cooling air conditioning unit of claim 7, wherein: the water tank is located under the first heat exchange core body and the second heat exchange core body.
9. The two-stage indirect evaporative cooling air conditioning unit of claim 4, wherein: and a water baffle is arranged in the part of the outdoor side air channel from the outdoor side air outlet to the part communicated with the second heat exchange core body, and the water baffle is positioned above the spray head of the evaporative cooling system and used for retaining water.
10. The two-stage indirect evaporative cooling air conditioning unit as recited in any one of claims 1 to 9 further comprising: the outdoor side air flow passage is internally provided with a filter covering an outdoor side inlet and outlet; and/or a filter covering an indoor side inlet and an indoor side outlet is arranged in the indoor side air flow passage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021160550.7U CN212253004U (en) | 2020-06-19 | 2020-06-19 | Two-stage indirect evaporative cooling air conditioning unit |
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| CN202021160550.7U CN212253004U (en) | 2020-06-19 | 2020-06-19 | Two-stage indirect evaporative cooling air conditioning unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112762531A (en) * | 2020-12-31 | 2021-05-07 | 广东欧科空调制冷有限公司 | Air conditioning unit |
| CN113587530A (en) * | 2021-08-12 | 2021-11-02 | 澳蓝（福建）实业有限公司 | Defrosting method for indirect evaporation heat exchange core of data center |
-
2020
- 2020-06-19 CN CN202021160550.7U patent/CN212253004U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112762531A (en) * | 2020-12-31 | 2021-05-07 | 广东欧科空调制冷有限公司 | Air conditioning unit |
| CN113587530A (en) * | 2021-08-12 | 2021-11-02 | 澳蓝（福建）实业有限公司 | Defrosting method for indirect evaporation heat exchange core of data center |
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