CN111432604A - Heat exchange device and cooling system - Google Patents
Heat exchange device and cooling system Download PDFInfo
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- CN111432604A CN111432604A CN202010278929.6A CN202010278929A CN111432604A CN 111432604 A CN111432604 A CN 111432604A CN 202010278929 A CN202010278929 A CN 202010278929A CN 111432604 A CN111432604 A CN 111432604A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20309—Evaporators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C3/00—Other direct-contact heat-exchange apparatus
- F28C3/02—Other direct-contact heat-exchange apparatus the heat-exchange media both being gases or vapours
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20381—Thermal management, e.g. evaporation control
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- Air Conditioning Control Device (AREA)
Abstract
The application discloses heat transfer device and cooling system relates to refrigeration technology field. The specific implementation scheme is as follows: the air mixing box comprises a heat exchange main body, a first pipeline, a first electric air valve, an air mixing box and a controller, wherein a first air inlet and a first air outlet are formed in the heat exchange main body, the first air inlet is communicated with the first air outlet, the first pipeline comprises a first port and a second port communicated with the first port, and the air mixing box comprises a first inlet, a second inlet and a first outlet; the controller is connected with the first electric air valve, the first port is arranged at the first air outlet through the first electric air valve, the first port is opposite to a ventilation channel of the first electric air valve, the second port is communicated with the first inlet of the air mixing box, the second inlet of the air mixing box is communicated with the outside, and the first outlet of the air mixing box is connected with the first air inlet; the controller controls the opening degree of the first electric air valve according to the machine room dew point temperature, the outdoor temperature and the air temperature of the first air outlet, so that the air temperature of the first air inlet is higher than the machine room dew point temperature.
Description
Technical Field
The application relates to the technical field of refrigeration of data centers, in particular to a heat exchange device and a cooling system.
Background
With the continuous rising of energy cost and the attention of people on green and environmental protection, the energy-saving requirement of a data center (also called a machine room) is more and more strong. On the premise of ensuring safe and high-performance operation of IT equipment of a data center machine room, various energy-saving means are comprehensively utilized, the energy utilization efficiency of the data center is improved, and the PUE (index for evaluating the energy efficiency of the data center, which is the ratio of all energy consumed by the data center to the energy consumed by the IT load) is reduced.
In a data center, in order to realize heat dissipation and maintain normal operation of data center equipment, a cooling system is usually arranged, and an indirect evaporative cooling unit which is provided at present is applied to the air temperature difference outside a machine room and an evaporative cooling principle, fully utilizes a natural cold source to realize cooling of the data center, and reduces energy consumption of the data center. However, in the cooling process by the cooling unit, the outdoor air temperature is often lower than the dew point temperature in the machine room, and water vapor in the machine room is easily condensed and separated out at the heat exchanger of the cooling unit, so that the humidity in the machine room is low.
Disclosure of Invention
The application provides a heat transfer device and cooling system to solve current problem that the computer lab humidity is on the low side that appears the moisture condensation easily and separates out in heat transfer device department.
In a first aspect, an embodiment of the present application provides a heat exchange device, including a heat exchange main body, a first pipeline, a first electric air valve, an air mixing box, and a controller, where the heat exchange main body is provided with a first air inlet and a first air outlet, the first air inlet is communicated with the first air outlet, the first pipeline includes a first port and a second port communicated with the first port, and the air mixing box includes a first inlet, a second inlet, and a first outlet;
the controller is connected with the first electric air valve, the first port is mounted at the first air outlet through the first electric air valve and is opposite to a ventilation channel of the first electric air valve, the second port is communicated with the first inlet of the air mixing box, the second inlet of the air mixing box is communicated with the outside, and the first outlet of the air mixing box is connected with the first air inlet;
the controller controls the opening degree of the first electric air valve according to the machine room dew point temperature, the outdoor temperature and the air temperature of the first air outlet, so that the air temperature of the first air inlet is higher than the machine room dew point temperature.
In the heat exchange device of this application embodiment, through the first electronic blast gate of first air outlet department installation at the heat transfer main part, first pipeline is installed at first air outlet through first electronic blast gate, and the first port of first pipeline is relative with the ventilation channel of first electronic blast gate, and the second port that communicates with first port communicates with the first import of mixing bellows. So, can flow back to mixing the wind case from the wind of the ventilation passageway transmission of first electronic blast gate through first pipeline, and the wind of the ventilation passageway transmission of first electronic blast gate is acquireed from first air outlet, mixes the wind of first pipeline transmission and mixes with outdoor wind to mix the wind case, even outdoor temperature is low, and outdoor wind temperature is low, and the wind of accessible first pipeline transmission mixes with outdoor wind in order to improve the wind temperature, then will mix inside the wind gets into the heat exchanger through first air intake. And in this embodiment, through the aperture of controlling first electronic blast gate to the amount of wind that the control was given for mixing the wind box from first pipeline, thereby the temperature of the wind after the steerable mixed wind incasement mixes, the wind after mixing gets into in the heat exchanger through first air intake, thereby realize controlling the wind-warm syndrome of first air intake, makes the wind-warm syndrome of first air intake be higher than computer lab dew point temperature, so, the condition that vapor condenses out in the reducible computer lab in heat transfer device department, humidity in the improvement computer lab.
In a second aspect, an embodiment of the present application provides a cooling system including a heat exchange device provided in various implementations of the present application.
In the cooling system of this application embodiment, including heat transfer device, among the heat transfer device, at the first air outlet department installation first electronic blast gate of heat transfer main part, first pipeline is installed at first air outlet through first electronic blast gate, and the first port of first pipeline is relative with the ventilation channel of first electronic blast gate, and the second port that communicates with first port communicates with the first import of mixing bellows. So, can flow back to mixing the wind case from the wind of the ventilation passageway transmission of first electronic blast gate through first pipeline, and the wind of the ventilation passageway transmission of first electronic blast gate is acquireed from first air outlet, mixes the wind of first pipeline transmission and mixes with outdoor wind to mix the wind case, even outdoor temperature is low, and outdoor wind temperature is low, and the wind of accessible first pipeline transmission mixes with outdoor wind in order to improve the wind temperature, then will mix inside the wind gets into the heat exchanger through first air intake. And in this embodiment, through the aperture of controlling first electronic blast gate to the amount of wind that the control was given for mixing the wind box from first pipeline, thereby the temperature of the wind after the steerable mixed wind incasement mixes, the wind after mixing gets into in the heat exchanger through first air intake, thereby realize controlling the wind-warm syndrome of first air intake, makes the wind-warm syndrome of first air intake be higher than computer lab dew point temperature, so, the condition that vapor condenses out in the reducible computer lab in heat transfer device department, humidity in the improvement computer lab.
Drawings
The drawings are included to provide a better understanding of the present solution and are not intended to limit the present application. Wherein:
FIG. 1 is one of the schematic views of a heat exchange device according to one embodiment provided herein;
fig. 2 is a second schematic view of a heat exchange device according to an embodiment provided in the present application.
Detailed Description
The following description of the exemplary embodiments of the present application, taken in conjunction with the accompanying drawings, includes various details of the embodiments of the application for the understanding of the same, which are to be considered exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
As shown in fig. 1 and 2, according to an embodiment of the present application, the present application provides a heat exchange device 100, including a controller 101, a first electric air valve 102, a heat exchange main body 103, a first pipeline 104, and an air mixing box 105, where the heat exchange main body 103 is provided with a first air inlet and a first air outlet, the first air inlet and the first air outlet are communicated, the first pipeline 104 includes a first port and a second port communicated with the first port, and the air mixing box 105 includes a first inlet, a second inlet, and a first outlet. The controller is connected with the first electric air valve 102, the first port is installed at the first air outlet through the first electric air valve 102, the first port is opposite to a ventilation channel of the first electric air valve 102, the second port is communicated with a first inlet of the air mixing box 105, a second inlet of the air mixing box 105 is communicated with the outside, and a first outlet of the air mixing box 105 is connected with a first air inlet. The controller controls the opening degree of the first electric air valve 102 according to the machine room dew point temperature, the outdoor temperature and the air temperature of the first air outlet, so that the air temperature of the first air inlet is higher than the machine room dew point temperature.
This heat transfer device sets up in the computer lab, is the route of first pipeline 104 between first port and the second port of first pipeline 104, and the wind that gets into heat transfer main part 103 through first air intake carries out the heat exchange inside heat transfer main part 103, absorbs the heat, and the wind temperature behind the heat absorption risees, flows from first air outlet, and first air outlet outflow is hot-blast promptly. It should be noted that the air entering from the first air inlet exchanges heat with the indoor air entering from the machine room into the heat exchanger, the air entering from the first air inlet absorbs heat of the indoor air entering from the machine room inside the heat exchange main body 103, the temperature of the indoor air after absorbing the heat is reduced, and the air flows out of the heat exchanger into the machine room, so that the machine room is cooled.
The first electric air valve 102 can work under different working conditions, which can include a fully open state, a fully closed state, and a working condition between the fully closed state and the fully open state, in the fully open state, the opening degree is 100%, which is the maximum opening degree that can be supported, and at this time, the air flow into the first electric air valve 102 is the maximum. In the fully closed state, the opening degree is 0, and the first electric damper 102 blocks the flow of wind at this time. The working state between the fully-closed state and the fully-opened state refers to the working state with the opening degree between 0 and 100 percent. The larger the opening degree is, the larger the amount of air flowing through the first electric damper 102 is.
In this embodiment, the first duct 104 is located between the first air outlet and the first air inlet, the first duct 104 is installed at the first air outlet through the first electric air valve 102, a first port of the first duct 104 is opposite to the ventilation channel of the first electric air valve 102, a second port is communicated with the first inlet of the air mixing box 105, a part of air at the first air outlet can be transmitted to the first duct 104 through the ventilation channel of the first electric air valve 102, and is transmitted to the first inlet of the air mixing box 105 through the passage of the first duct 104, and enters the air mixing box 105 through the first inlet, so as to realize the backflow of the part of air at the first air outlet, in addition, the air mixing box 105 is further provided with a second inlet communicated with the outside (outside of the machine room), the outside air can enter the air mixing box 105 through the second inlet, the air mixing box 105 mixes the air entering from the first inlet and the outside air entering from the second inlet, if the outdoor temperature is low, the air entering through the first inlet is mixed with the outdoor air, and the mixed air enters the heat exchange main body 103 through the first air inlet, so that the temperature of the air entering from the first air inlet is increased.
In this embodiment, the controller controls the opening of the first electric air valve 102 according to the dew point temperature of the machine room, the outdoor temperature (i.e. the outdoor air temperature) and the air temperature of the first air outlet, and controls the air flowing out of the first air outlet by controlling the opening of the first electric air valve 102, and the air entering the air mixing box 105 through the first inlet is controlled, i.e. the air flowing into the air mixing box 105 through the first air outlet is controlled by controlling the opening of the first electric air valve 102. The larger the air volume of the first outlet air entering the air mixing box 105 is, the higher the air temperature of the air mixed with the outdoor air entering the second inlet is, and the higher the air temperature of the air flowing into the first air inlet in the air mixing box 105 is, so that the control of the air temperature of the first air inlet can be realized through the opening degree of the first electric air valve 102, and in this embodiment, the air temperature of the first air inlet is higher than the dew point temperature of the machine room by controlling the opening degree of the first electric air valve 102.
In the heat exchanger of this application embodiment, through first air outlet department installation first electronic blast gate 102 at heat exchange main part 103, first pipeline 104 is installed at first air outlet through first electronic blast gate 102, and the first port of first pipeline 104 is relative with the ventilation channel of first electronic blast gate 102, and the second port that communicates with first port communicates with the first import of mixing wind case 105. In this way, the air transmitted through the ventilation channel of the first electric air valve 102 can flow back to the air mixing box 105 through the first duct 104, the air transmitted through the ventilation channel of the first electric air valve 102 is obtained from the first air outlet, the air mixing box 105 mixes the air transmitted through the first duct 104 with the outdoor air, and even if the outdoor temperature is low and the outdoor air temperature is low, the air transmitted through the first duct 104 and the outdoor air are mixed to increase the air temperature, and then the mixed air enters the heat exchanger through the first air inlet. In this embodiment, the opening degree of the first electric air valve 102 is controlled to control the air volume transmitted from the first pipeline 104 to the air mixing box 105, so that the temperature of the mixed air in the air mixing box 105 can be controlled, the mixed air enters the heat exchanger through the first air inlet, and the air temperature of the first air inlet is controlled, so that the air temperature of the first air inlet is higher than the dew point temperature of the machine room, therefore, the condition that water vapor in the machine room is condensed and separated out at the heat exchanger is reduced, the humidity in the machine room is improved, and the humidity in the machine room is maintained in a normal range. Meanwhile, devices for increasing humidity, such as a humidifier and the like, do not need to be additionally arranged, the humidity in the machine room can be increased, the cost is saved, and the consumption of resources (such as hydropower resources and the like) can be reduced.
It should be noted that, the controller controls the opening of the first electric air valve 102, so as to effectively control the air volume that can enter the first air inlet of the heat exchange main body 103, and since the air entering the heat exchange main body 103 needs to exchange heat with the indoor air, so as to absorb the indoor air heat, the larger the air temperature of the first air inlet is, the less the absorbed heat is, the less the indoor air heat in the heat exchange main body 103 is reduced, the larger the air temperature that flows into the room from the second air outlet is, the poorer the refrigeration effect is, so as to ensure the refrigeration effect, the air temperature of the second air outlet needs to be controlled not to be too high, i.e., the cooling requirement needs to be met (which can be understood as an air supply requirement). That is, in one embodiment, the controller controls the opening of the first electric air valve 102 according to the machine room dew-point temperature, the outdoor temperature, and the air temperature of the first air outlet, so as to control the air temperature of the first air inlet to be higher than the machine room dew-point temperature, and control the air temperature of the second air outlet to meet the cooling requirement.
In one embodiment, the heat exchanging device further comprises a second electric air valve 106 connected with the controller, a second port of the first pipe 104 is connected with the first inlet through the second electric air valve, and the second port is opposite to the ventilation channel of the second electric air valve 106. The controller controls the opening degree of the second electric air valve 106 according to the dew point temperature of the machine room, the outdoor temperature and the air temperature of the first air outlet, and the opening degree of the second electric air valve 106 is matched with the opening degree of the first electric air valve 102.
The electronic blast gate 106 of second is located between second port and the first import, the second port is relative with the ventilation passageway of the electronic blast gate 106 of second, the second port passes through the electronic blast gate of second and first import intercommunication, so, the ventilation passageway that the second port output from first pipeline 104 passes through the electronic blast gate 106 of second gets into first import, thereby get into and mix inside the bellows 105, can control the amount of wind that gets into from first pipeline 104 and mix bellows 105 through the electronic blast gate 106 of second, thereby can improve the accuracy of the wind temperature control to first air intake. In addition, the controller can control the opening of the first electric air valve 102 and the opening of the second electric air valve 106, and the opening of the second electric air valve 106 is matched with the opening of the first electric air valve 102, so that the wind energy entering the first pipeline 104 from the first air outlet through the first electric air valve 102 can more smoothly enter the air mixing box 105 through the second electric air valve 106. As an example, the opening degree of the second electric air valve 106 may be matched to the opening degree of the first electric air valve 102, and the opening degree of the second electric air valve 106 may be the same as the opening degree of the first electric air valve 102, so that the same amount of air entering the air mixing box 105 as the amount of air entering the first duct 104 is ensured, and the accuracy of controlling the temperature of the air mixed in the air mixing box 105 is improved.
In one embodiment, the heat exchange device further comprises a third electric air valve 107 installed at the second inlet of the air mixing box 105, and the third electric air valve 107 is connected with the controller. The controller controls the opening degree of the third electric air valve 107 according to the dew point temperature of the machine room, the outdoor temperature and the air temperature of the first air outlet, and the sum of the opening degree of the third electric air valve 107 and the opening degree of the second electric air valve 106 is a first maximum opening degree, wherein the first maximum opening degree is the maximum opening degree supported by the third electric air valve 107 or the second electric air valve 106.
The third electric air valve 107 can control the outdoor air volume entering the air mixing box 105 from the second inlet, so that the control accuracy of the air temperature in the air mixing box 105 can be improved, and the accuracy of the air temperature control of the first air inlet is improved. In addition, the controller can control the opening degrees of the first electric air valve 102 and the second electric air valve 106, and also can control the opening degree of the third electric air valve 107, and the sum of the opening degree of the third electric air valve 107 and the opening degree of the second electric air valve 106 is the first maximum opening degree, namely the sum of the opening degrees can be the maximum opening degree supported by the third electric air valve 107, or can be the maximum opening degree supported by the second electric air valve 106, so that the air volume entering the air mixing box 105 is the air volume transferred by one electric air valve (the second electric air valve 106 or the third electric air valve 107) under the full-open condition, and the mixed air in the air mixing box 105 enters the first air inlet, thus, the problem of poor air temperature control effect caused by too small air volume entering the first air inlet can be avoided, and the air temperature control effect on the first air inlet can be improved.
In one embodiment, the controller calculates the air mixing ratio according to the dew point temperature of the machine room, the outdoor temperature and the air temperature of the first air outlet, and controls the opening degrees of the first electric air valve 102, the second electric air valve 106 and the third electric air valve 107 based on the air mixing ratio, so that the ratio of the air flowing into the first inlet and the air flowing into the second inlet of the air mixing box 105 is the air mixing ratio.
Because the opening degree of the first electric air valve 102 is matched with the opening degree of the second electric air valve 106, the wind energy transmitted to the first pipeline 104 through the first electric air valve 102 is smoothly transmitted to the first inlet through the second electric air valve 106, in this embodiment, the wind mixing proportion is related to the machine room dew point temperature, the outdoor temperature and the wind temperature of the first air outlet, the opening degrees of the first electric air valve 102, the second electric air valve 106 and the third electric air valve 107 are controlled through the wind mixing proportion, so that the wind entering from the first inlet and the outdoor wind entering from the second inlet can be mixed in the wind mixing box 105 according to the wind mixing proportion, and the mixed wind enters the first air inlet, so that the wind temperature control accuracy of the first air inlet can be improved.
In one embodiment, the heat exchanging device further comprises a second pipe connected to the third electric air valve 107, and the second pipe is mounted at the second inlet through the third electric air valve 107, and the inner cavity of the second pipe is opposite to the ventilation channel of the third electric air valve 107.
Therefore, outdoor air can flow into the second pipeline firstly, then flows through the second inlet by the third electric air valve 107 and enters the air mixing box 105, and effective control over the outdoor air flowing into the air mixing box 105 can be achieved.
In one embodiment, the heat exchanging device further comprises a fourth electric air valve 108 installed at the first air outlet, and the fourth electric air valve 108 is connected with the controller. The controller controls the opening degree of the fourth electric air valve 108 according to the dew-point temperature of the machine room, the outdoor temperature and the air temperature of the first air outlet, and the sum of the opening degree of the fourth electric air valve 108 and the opening degree of the first electric air valve 102 is a second maximum opening degree, wherein the second maximum opening degree is the maximum opening degree supported by the fourth electric air valve 108 or the first electric air valve 102.
The fourth electric air valve 108 can control the air volume of the first air outlet of the heat exchange main body 103, so that the heat dissipation effect of the heat exchange main body 103 can be effectively controlled. In addition, the controller may control the opening degrees of the first electric air valve 102, the second electric air valve 106, and the third electric air valve 107, may control the opening degree of the fourth electric air valve 108, and may control the opening degree of the fourth electric air valve 108 such that the sum of the opening degree of the fourth electric air valve 108 and the opening degree of the first electric air valve 102 is a second maximum opening degree, that is, the sum of the opening degrees may be a maximum opening degree supported by the fourth electric air valve 108 or a maximum opening degree supported by the first electric air valve 102, and may make the air volume flowing from the heat exchange body 103 be the air volume transferred by one electric air valve (the fourth electric air valve 108 or the first electric air valve 102) in a fully open state, and may make the air of the first outlet flow out smoothly, thereby improving the heat radiation effect of the heat exchange body 103 at the first outlet.
In one embodiment, the heat exchanging device further includes a third pipe connected to the fourth electric air valve 108, and the third pipe is installed at the first air outlet through the fourth electric air valve 108, and an inner cavity of the third pipe is opposite to the ventilation channel of the fourth electric air valve 108.
So, the partial wind of the first air outlet of heat exchange main body 103 can flow into the third pipeline earlier, and rethread fourth electronic blast gate 108 flows into outdoors, can realize carrying out effective control to the wind that flows into outdoors.
In one example, to fully utilize the natural heat sink, the controller may control the first, second, third, and fourth electric dampers 102, 106, 107, and 108 to be fully open when the outdoor temperature is greater than the machine room dew point temperature.
In one embodiment, the heat exchange device further comprises a first temperature sensor and a first humidity sensor, the controller is connected with the first temperature sensor and the first humidity sensor respectively, the first temperature sensor is used for collecting the temperature of the machine room, the first humidity sensor is used for collecting the humidity of the machine room, and the controller determines the dew point temperature of the machine room according to the temperature of the machine room and the humidity of the machine room.
First temperature sensor arranges in the computer lab, the user gathers the computer lab internal temperature, first humidity transducer arranges in the computer lab, a humidity for gathering in the computer lab, first temperature sensor transmits the computer lab temperature of gathering for the controller, first humidity transducer transmits the computer lab humidity of gathering for the controller, the computer lab dew point temperature is confirmed according to computer lab temperature and computer lab humidity to the controller, then can be according to computer lab dew point temperature, the wind temperature of outdoor temperature and first air outlet is controlled the aperture of electronic blast gate, improve the accuracy to the wind temperature control of first air intake, reduce the interior vapor condensation of computer lab and appear, improve humidity in the computer lab, need not extra device and improve humidity in the computer lab, reduce the cost etc.
In one embodiment, the heat exchange body 103 further has a second air inlet and a second air outlet, and the second air inlet is communicated with the second air outlet.
It can be understood that the first air inlet on the heat exchange main body 103 is an outdoor air inlet, the first air outlet is an outdoor air outlet, the second air inlet is a machine room air inlet, i.e. an indoor air inlet, and the second air outlet is a machine room air outlet, i.e. an indoor air outlet. The second air inlet is communicated with the machine room, the second air outlet is communicated with the machine room, indoor air can enter the heat exchange main body 103 through the second air inlet, air entering from the first air inlet in the heat exchange main body 103 can exchange heat with indoor air in the heat exchange main body 103, namely, heat of the indoor air is absorbed, the indoor air is cooled, and the cooled indoor air flows into the room from the second air outlet, so that indoor cooling refrigeration is realized. So, in this embodiment, through the indoor wind of second air intake transmission, the indoor wind transmission after will cooling through the second air outlet is to indoor, is convenient for to indoor cooling.
Embodiments of the present application further provide a cooling system, which includes the heat exchange device 100 of each of the above embodiments.
The cooling system can be arranged in the machine room and used for cooling the machine room. In the cooling system of the embodiment of the application, including heat exchange device 100, in heat exchange device 100, install first electronic blast gate 102 at the first air outlet of heat exchange main part 103, first pipeline 104 is installed at first air outlet through first electronic blast gate 102, and the first port of first pipeline 104 is relative with the ventilation channel of first electronic blast gate 102, and the second port that communicates with first port communicates with the first import of mixing wind case 105. In this way, the air transmitted through the ventilation channel of the first electric air valve 102 via the first duct 104 flows back to the air mixing box 105, the air transmitted through the ventilation channel of the first electric air valve 102 is obtained from the first air outlet, the air mixing box 105 mixes the air transmitted through the first duct 104 with the outdoor air, even if the outdoor temperature is low and the outdoor air temperature is low, the air transmitted through the first duct 104 and the outdoor air are mixed to increase the air temperature, and then the mixed air enters the heat exchanger through the first air inlet. In this embodiment, the opening degree of the first electric air valve 102 is controlled to control the air volume transmitted from the first pipeline 104 to the air mixing box 105, so that the temperature of the mixed air in the air mixing box 105 can be controlled, the mixed air enters the heat exchanger through the first air inlet, and the air temperature of the first air inlet is controlled, so that the air temperature of the first air inlet is higher than the dew point temperature of the machine room, therefore, the condition that water vapor in the machine room is condensed and separated out at the heat exchanger can be reduced, and the humidity in the machine room is improved.
The above-described embodiments should not be construed as limiting the scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A heat exchange device is characterized by comprising a heat exchange main body, a first pipeline, a first electric air valve, an air mixing box and a controller, wherein the heat exchange main body is provided with a first air inlet and a first air outlet;
the controller is connected with the first electric air valve, the first port is mounted at the first air outlet through the first electric air valve and is opposite to a ventilation channel of the first electric air valve, the second port is communicated with the first inlet of the air mixing box, the second inlet of the air mixing box is communicated with the outside, and the first outlet of the air mixing box is connected with the first air inlet;
the controller controls the opening degree of the first electric air valve according to the machine room dew point temperature, the outdoor temperature and the air temperature of the first air outlet, so that the air temperature of the first air inlet is higher than the machine room dew point temperature.
2. The apparatus of claim 1, further comprising a second electric damper connected to the controller, wherein the second port of the first conduit is connected to the first inlet port through the second electric damper, and wherein the second port is opposite to the vent passage of the second electric damper;
the controller controls the opening degree of the second electric air valve according to the machine room dew point temperature, the outdoor temperature and the air temperature of the first air outlet, and the opening degree of the second electric air valve is matched with the opening degree of the first electric air valve.
3. The apparatus of claim 2, further comprising a third electrically operated air valve mounted at the second inlet of the air mixing box, the third electrically operated air valve being connected to the controller;
the controller controls the opening degree of the third electric air valve according to the machine room dew point temperature, the outdoor temperature and the air temperature of the first air outlet, and the sum of the opening degree of the third electric air valve and the opening degree of the second electric air valve is a first maximum opening degree, wherein the first maximum opening degree is the maximum opening degree supported by the third electric air valve or the second electric air valve.
4. The apparatus according to claim 3, wherein the controller calculates a mixing ratio based on the machine room dew-point temperature, the outdoor temperature, and the air temperature at the first outlet, and controls the opening degrees of the first, second, and third electric air valves based on the mixing ratio such that the ratio of the air flowing into the first inlet to the air flowing into the second inlet of the mixing box is the mixing ratio.
5. The apparatus of claim 3, further comprising a second conduit connected to the third electric damper, wherein the second conduit is mounted to the second inlet via the third electric damper, and wherein an inner cavity of the second conduit is opposite to the vent passage of the third electric damper.
6. The device according to any one of claims 1 to 5, further comprising a fourth electrically operated air valve mounted to the first air outlet, the fourth electrically operated air valve being connected to the controller;
the controller controls the opening degree of the fourth electric air valve according to the machine room dew point temperature, the outdoor temperature and the air temperature of the first air outlet, and the sum of the opening degree of the fourth electric air valve and the opening degree of the first electric air valve is a second maximum opening degree, wherein the second maximum opening degree is the maximum opening degree supported by the fourth electric air valve or the first electric air valve.
7. The device of claim 6, further comprising a third duct connected to the fourth electric air valve, wherein the third duct is mounted to the first air outlet through the fourth electric air valve, and an inner cavity of the third duct is opposite to the ventilation channel of the fourth electric air valve.
8. The device of claim 1, further comprising a first temperature sensor and a first humidity sensor, wherein the controller is connected to the first temperature sensor and the first humidity sensor, respectively, the first temperature sensor is used for collecting machine room temperature, the first humidity sensor is used for collecting machine room humidity, and the controller determines the machine room dew point temperature according to the machine room temperature and the machine room humidity.
9. The device of claim 4, wherein the heat exchange body is further provided with a second air inlet and a second air outlet, and the second air inlet is communicated with the second air outlet.
10. A cooling system comprising a heat exchange device according to any one of claims 1 to 9.
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| CN108592333A (en) * | 2018-04-28 | 2018-09-28 | 北京百度网讯科技有限公司 | Humidity control system, method, equipment and computer-readable medium |
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| CN106440176A (en) * | 2016-08-30 | 2017-02-22 | 爱康森德（深圳）空气技术有限公司 | Energy-saving multifunctional fresh air unit |
| CN207969273U (en) * | 2018-04-02 | 2018-10-12 | 郑州云海信息技术有限公司 | A kind of cooling unit of evaporation and cooling system |
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