CN215863744U - Micromodule and heat exchange device - Google Patents
Micromodule and heat exchange device Download PDFInfo
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- CN215863744U CN215863744U CN202121588156.8U CN202121588156U CN215863744U CN 215863744 U CN215863744 U CN 215863744U CN 202121588156 U CN202121588156 U CN 202121588156U CN 215863744 U CN215863744 U CN 215863744U
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Abstract
The application discloses a micromodule and a heat exchange device, and relates to the field of refrigeration equipment; the heat exchange device comprises a shell, the shell is divided into a first cavity and a second cavity through a partition plate, the first cavity is provided with an air return opening and an air supply opening, and the second cavity is provided with a fresh air opening and an air outlet; wherein, the clapboard is also provided with a fresh air valve and an exhaust valve; when the outdoor temperature is lower, hot air generated by the heat source enters the first cavity through the air return opening, one part of the hot air enters the second cavity through the exhaust valve and is exhausted outdoors through the air outlet, and the other part of the hot air still flows to the air supply opening in the first cavity; outdoor cold air enters the second cavity from the fresh air inlet, one part of the cold air enters the first cavity through the fresh air valve and is mixed with the other part of the hot air to finally obtain mixed cold air, and then the mixed cold air is blown to a heat source through the air supply outlet, namely the outdoor cold air and the indoor hot air are mixed, so that the loss generated in the heat exchange process is reduced, and the utilization rate of a cold source is improved.
Description
Technical Field
The utility model relates to the field of refrigeration equipment, in particular to a micromodule and a heat exchange device.
Background
The refrigeration equipment has the functions of refrigerating articles, dissipating heat and cooling the equipment and the like, and is divided into various products such as micromodules, refrigerated containers, refrigeration houses and the like according to application scenes.
The existing common micro-modules mainly adopt various types with different layouts such as a room-level machine room air conditioner, a row-room-level machine room air conditioner, a top-bottom-set machine room air conditioner and the like to realize temperature and humidity control of a space, wherein the machine room air conditioners of the types comprise a split type indoor unit and an outdoor unit, and even if the indoor unit and the outdoor unit are arranged adjacently, the heat exchange mode of the machine room air conditioner still exchanges heat between refrigerant and hot air in the machine room through an evaporator of the indoor unit, and the refrigerant after heat exchange is transmitted to the outdoor unit through a pipeline to cool the refrigerant in the outdoor unit.
The machine room air conditioner adopting the structure carries out primary heat exchange in the outdoor unit through the refrigerant, then the refrigerant is conveyed into the indoor unit, the refrigerant carries out secondary heat exchange in the indoor unit, the loss of cold energy can be caused in the heat exchange process, and the utilization rate of the machine room air conditioner to an outdoor cold source is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a micro-module and a heat exchange device, which are used for solving the problem of low utilization rate of a cold source of the existing micro-module.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a heat exchange device comprising a housing; a partition plate is arranged in the shell, and the partition plate and the shell enclose a first cavity and a second cavity which are separated in the shell;
the partition plate is provided with a fresh air valve and an exhaust air valve at intervals;
an air return opening and an air supply opening are formed in the side wall, far away from the second cavity, of the first cavity at intervals along the horizontal direction, wherein the air return opening is formed in one side, close to the exhaust valve, of the fresh air valve;
and a fresh air opening and an air outlet are formed in the side wall of the second cavity, which is far away from the first cavity, at intervals along the vertical direction, wherein the fresh air opening is arranged below the air outlet.
Optionally, a return air temperature sensor is arranged at the return air inlet, a fresh air temperature sensor is arranged at the fresh air inlet, and an air supply temperature sensor is arranged at the air supply inlet;
the shell is internally provided with a compressor, a condenser and an evaporator which are sequentially communicated, wherein the condenser is arranged in the second cavity, the evaporator is arranged in the first cavity, the condenser is arranged between the fresh air inlet and the air outlet, and the evaporator is arranged between the return air inlet and the air supply outlet;
the fresh air valve is arranged on the air inlet side of the condenser and the air outlet side of the evaporator;
the exhaust valve is arranged on the air outlet side of the condenser and the air inlet side of the evaporator.
Optionally, a bypass valve is further arranged on the partition plate, and the bypass valve is arranged on the air outlet side of the condenser and the air outlet side of the evaporator;
the bypass valve is close to the opening part on one side of the condenser and is provided with a condensation temperature sensor, and the air return opening part is also provided with an air return humidity sensor.
Optionally, the housing is located in the second cavity, and a humidifying device is disposed between the air inlet side of the condenser and the fresh air inlet.
Optionally, a fresh air exhaust louver valve is arranged on the partition plate, a louver partition plate is arranged in the fresh air exhaust louver valve, and the fresh air exhaust louver valve is divided into the fresh air valve and the exhaust valve by the louver partition plate;
the shell is internally provided with a compressor, a condenser and an evaporator which are sequentially communicated, wherein the condenser is arranged in the second cavity, the evaporator is arranged in the first cavity, the condenser is arranged between the fresh air inlet and the air outlet, and the evaporator is arranged between the return air inlet and the air supply outlet;
the fresh air valve is arranged on the air inlet side of the condenser and the air outlet side of the evaporator;
the exhaust valve is arranged on the air inlet side of the condenser and the air inlet side of the evaporator.
Optionally, the housing comprises an indoor housing and an outdoor housing; the indoor shell is detachably connected with the outdoor shell, and the partition plate is located on the indoor shell.
Optionally, an air supply device is arranged on one side of the casing, which is close to the air supply outlet, in the first cavity;
an air outlet device is arranged on one side, close to the air outlet, of the shell in the second cavity.
A micromodule comprising a heat source and a heat exchange device as described above; the heat source is arranged on one side of the heat exchange device and is arranged between the air return inlet and the air supply outlet.
Compared with the prior art, the utility model has the following beneficial effects:
according to the micromodule and the heat exchange device provided by the utility model, when the outdoor temperature is lower, hot air generated by a heat source enters the first cavity through the air return opening, one part of the hot air enters the second cavity through the exhaust valve and is exhausted outdoors through the air outlet, and the other part of the hot air is still in the first cavity to flow to the fresh air opening; outdoor cold air enters the second cavity from the fresh air inlet, one part of the cold air enters the first cavity through the fresh air valve and is mixed with the other part of the hot air to finally obtain mixed cold air, and then the mixed cold air is blown to a heat source through the air supply outlet; through the mixture to outdoor cold wind and indoor hot-blast promptly, realize the direct utilization to outdoor cold source, reduce the loss that the heat transfer in-process produced, improved the cold source utilization ratio.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
The structure, proportion, size and the like shown in the drawings of the present specification are only used for matching with the content disclosed in the specification, so that those skilled in the art can understand and read the description, and do not limit the limit conditions of the implementation of the present invention, so that the essence of the technology is not existed, and any structural modification, change of the first proportion relation or adjustment of the size are still within the scope of the content of the present invention without affecting the efficacy and the purpose which can be achieved by the present invention.
Fig. 1 is a schematic overall structure diagram of a heat exchange device according to a first embodiment of the present invention;
fig. 2 is a schematic top view of a heat exchange device according to an embodiment of the present invention;
fig. 3 is a schematic front view of a heat exchange device according to an embodiment of the present invention;
fig. 4 is a schematic side view of a heat exchange device according to an embodiment of the present invention;
fig. 5 is a schematic side view of a heat exchange device according to a second embodiment of the present invention.
Illustration of the drawings: 1. a housing; 11. an air return opening; 12. an air supply outlet; 13. a fresh air port; 14. an air outlet; 15. an indoor housing; 16. an outdoor housing; 2. a partition plate; 31. a fresh air valve; 32. an exhaust valve; 33. a bypass valve; 41. a condenser; 42. an evaporator; 43. a humidifying device; 51. an air supply device; 52. an air outlet device.
Detailed Description
In order to make the objects, features and advantages of the present invention more apparent and understandable, the embodiments of the present invention will be described in detail and completely with reference to the accompanying drawings, and it is to be understood that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. It should be noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.
Referring to fig. 1 to 5, fig. 1 is a schematic overall structure diagram of a heat exchange device according to a first embodiment of the present invention, fig. 2 is a schematic top-view structure diagram of the heat exchange device according to the first embodiment of the present invention, fig. 3 is a schematic front-view structure diagram of the heat exchange device according to the first embodiment of the present invention, fig. 4 is a schematic side-view structure diagram of the heat exchange device according to the first embodiment of the present invention, and fig. 5 is a schematic side-view structure diagram of the heat exchange device according to a second embodiment of the present invention.
Example one
The heat exchange device that this embodiment provided mainly is applied to micromodule, container data center etc. and needs radiating field, through the improvement to the structure, improves the utilization ratio to outdoor cold source to make micromodule have emergent function.
As shown in fig. 1 to 4, the heat exchange device provided by the present embodiment includes a housing 1; be equipped with baffle 2 in the casing 1, baffle 2 encloses into first cavity and the second cavity that separates in casing 1 with casing 1. Wherein, a heat source area for placing a heat source is formed on one side of the shell 1; the second cavity is arranged on one side of the first cavity, which is far away from the heat source area. The heat source refers to a target device such as a server that generates heat in the present embodiment.
The partition 2 is provided with a fresh air valve 31 and an exhaust air valve 32 at an interval. Specifically, the fresh air valve 31 and the exhaust valve 32 are distributed along the horizontal direction, but the height difference between the fresh air valve 31 and the exhaust valve 32 is not limited, for example, the fresh air valve 31 and the exhaust valve 32 are equal in height, the fresh air valve 31 is higher than the exhaust valve 32, the fresh air valve 31 is lower than the exhaust valve 32, and the like, and the fresh air valve 31 is lower than the exhaust valve 32 in this embodiment.
An air return opening 11 and an air supply opening 12 are arranged on one side wall of the first cavity far away from the second cavity at intervals along the horizontal direction, wherein the air return opening 11 is arranged on one side of the fresh air valve 31 close to the exhaust valve 32.
And a fresh air port 13 and an air outlet 14 are formed in the side wall of the second cavity far away from the first cavity at intervals along the vertical direction, wherein the fresh air port 13 is arranged below the air outlet 14.
Specifically, the fresh air valve 31 and the exhaust valve 32 can be in the form of a louver valve, wherein the direction of the blade of the fresh air valve 31 can be set in the vertical direction or in the horizontal direction, and particularly, when the direction of the blade of the fresh air valve 31 is set in the vertical direction, the blade of the fresh air valve 31 also plays a role in guiding air, and when cold air enters the first cavity from the second cavity, the blade of the fresh air valve 31 can guide the cold air to the air supply opening 12, so that the heat exchange efficiency is improved; wherein, the blade direction of exhaust valve 32 both can follow vertical direction setting, also can follow the horizontal direction setting, and especially, when the blade direction of exhaust valve 32 set up along the horizontal direction, the blade of exhaust valve 32 plays wind-guiding effect, and when hot-blast from first cavity got into the second cavity, the blade of exhaust valve 32 can be with hot-blast guide to air outlet 14, improves the radiating effect. Wherein, the vertical direction refers to the gravity direction when the heat exchange device is installed, and the horizontal direction refers to the direction perpendicular to the gravity direction.
Specifically, when the outdoor temperature is low, hot air generated by the heat source enters the first cavity through the air return opening 11, a part of the hot air enters the second cavity through the exhaust valve 32 and is exhausted outdoors through the air outlet 14, and the other part of the hot air still flows into the air supply opening 12 in the first cavity; outdoor cold air enters the second cavity from the fresh air inlet 13, one part of the cold air enters the first cavity through the fresh air valve 31 and is mixed with the other part of the hot air to finally obtain mixed cold air, and then the mixed cold air is blown to a heat source through the air supply outlet 12; through the mixture to outdoor cold wind and indoor hot-blast promptly, realize the direct utilization to outdoor cold source, reduce the loss that the heat transfer in-process produced, improved the cold source utilization ratio.
Furthermore, a return air temperature sensor is arranged at the position of the return air inlet 11, a fresh air temperature sensor is arranged at the position of the fresh air inlet 13, and an air supply temperature sensor is arranged at the position of the air supply outlet 12.
The shell 1 is also internally provided with a compressor, a condenser 41 and an evaporator 42 which are sequentially communicated, wherein the condenser 41 is arranged in the second cavity, the evaporator 42 is arranged in the first cavity, the condenser 41 is arranged between the fresh air inlet 13 and the air outlet 14, and the evaporator 42 is arranged between the return air inlet 11 and the air supply outlet 12.
The fresh air valve 31 is disposed on the air intake side of the condenser 41 and on the air outlet side of the evaporator 42.
The exhaust valve 32 is disposed on the air outlet side of the condenser 41 and on the air inlet side of the evaporator 42.
The casing 1 has an air supply device 51 disposed at a side of the first cavity close to the air supply opening 12, and an air outlet device 52 disposed at a side of the casing 1 close to the air outlet 14. A return air filter screen is arranged between the return air inlet 11 and the air inlet side of the evaporator 42, for example, the return air filter screen may be arranged at the return air inlet 11, may be arranged at the air inlet side of the evaporator 42 and attached to the evaporator 42, and a fresh air filter screen is arranged at the fresh air inlet 13. It should be noted that the air supply device 51 includes a plurality of air supply fans, the air exhaust device 52 includes a plurality of air exhaust fans, the fresh air valve 31 of the embodiment is disposed at the negative pressure inlet of the air supply device 51, and the air exhaust valve 32 is disposed at the negative pressure inlet of the air exhaust device 52. It should be understood that, when the heat exchanging device exchanges air flow, the exhaust device 52 is started, the exhaust valve 32 is arranged at the negative pressure position of the exhaust device 52, and the evaporator 42 is arranged between the exhaust valve 32 and the fresh air valve 31 to generate air resistance, i.e. the suction force of the exhaust device 52 to the exhaust valve 32 is greater than the suction force of the air supply device 51 to the exhaust valve 32, and the exhaust valve 32 is arranged closer to the exhaust device 52, so that part of the hot air generated by the heat source necessarily flows to the second cavity through the exhaust valve 32 under the action of the exhaust device 52.
It should be noted that the heat exchange device in this embodiment adopts an integral design, the compressor, the condenser 41 and the evaporator 42 are all integrated in the housing 1, and operations such as pipe connection and refrigerant filling are not required during field installation, so that the installation is convenient; in addition, during maintenance, a worker can complete the maintenance of the compressor, the condenser 41 and the fresh air valve 31 at the second cavity of the shell 1 without influencing the operation of equipment in a heat source area; when the compressor, the condenser 41, the evaporator 42 and other parts of the heat exchange device are in failure, the fresh air valve 31 and the exhaust valve 32 can be completely opened, so that the effect of emergent exhaust is achieved, namely, the emergency ventilation capability is achieved.
Example two
As shown in fig. 5, the heat exchanger according to the present embodiment has advantages such as higher temperature stability and dehumidification capability due to the provision of the bypass valve 33, as compared with the heat exchanger according to the first embodiment, and as shown in the drawing, the partition plate 2 is further provided with the bypass valve 33, and the bypass valve 33 is provided on the air outlet side of the condenser 41 and the air outlet side of the evaporator 42.
A condensation temperature sensor is arranged at the opening of the bypass valve 33 close to one side of the condenser 41, and a return air humidity sensor is also arranged at the return air inlet 11.
Through the setting of bypass valve 33, when heat transfer device need be to the regional dehumidification of heat source and condensation air-out temperature is greater than predetermined second temperature threshold, can be through bypass valve 33 with the hot-blast defeated to first cavity through condenser 41 for hot-blast and the cold wind that is about to pass through supply-air outlet 12 mix, utilize the heat that natural heat source or condenser 41 gived off to make heat transfer device's high-efficient operation and the stability of temperature.
Additionally, when the heat exchange device is in the following state, the bypass valve 33 is also opened; a. the return air temperature is lower than a preset third temperature threshold value, and the condensation outlet air temperature is higher than a preset second temperature threshold value; b. when the compressor adopts the variable frequency compressor, the variable frequency compressor operates at a low frequency, the return air temperature is lower than a preset third temperature threshold value, and the condensation air outlet temperature is higher than a preset second temperature threshold value. Therefore, the heat exchange device can improve the operation energy efficiency of the unit and improve the utilization rate of natural heat sources and useless heat dissipation (for example, the heat dissipation of the condenser 41) under the condition of low-load dehumidification or refrigeration. In addition, the output temperature of the heat exchange device under the low-load condition can be ensured to be stable only by adjusting the bypass valve 33, the problems of insufficient oil return, low speed, high power consumption, low heat source utilization rate and the like caused by adjusting the control temperature of the compressor are solved, the compressor does not need to be started or stopped frequently, and the service life of the compressor is prolonged.
Further, the casing 1 is disposed in the second cavity, and a humidifying device 43 is disposed between the air inlet side of the condenser 41 and the fresh air inlet 13, wherein the humidifying device 43 includes a wet film, a spray pipe, and the like.
The humidifying device 43 can increase the humidity of the outdoor cold air at the fresh air inlet 13 through the wet film, and reduce the temperature; the humidifying device 43 comprises a spray pipeline connected with a tap water pipe, a water inlet electromagnetic valve is arranged on the spray pipeline, and when a humidifying request of the heat exchange device is detected, the water inlet electromagnetic valve is opened to enable tap water to wet a wet film through the spray pipeline, so that outdoor cold air can be humidified and cooled when passing through the wet film. It should be added that the humidifying device 43 is disposed in the second cavity, so as to avoid the safety risk of water entering the equipment such as a server.
Furthermore, a fresh air exhaust louver valve is arranged on the partition plate 2, a louver partition plate is arranged in the fresh air exhaust louver valve, and the fresh air exhaust louver valve is divided into a fresh air valve 31 and an exhaust valve 32 by the louver partition plate. It should be noted that, when an emergency occurs in the machine room, the fresh air exhaust louver valve is opened to the maximum, and the maximum air circulation between the interior of the machine room and the exterior of the machine room can be realized.
The shell 1 is also internally provided with a compressor, a condenser 41 and an evaporator 42 which are sequentially communicated, wherein the condenser 41 is arranged in the second cavity, the evaporator 42 is arranged in the first cavity, the condenser 41 is arranged between the fresh air inlet 13 and the air outlet 14, and the evaporator 42 is arranged between the return air inlet 11 and the air supply outlet 12.
The fresh air valve 31 is disposed on the air intake side of the condenser 41 and on the air outlet side of the evaporator 42.
The exhaust valve 32 is disposed on the intake side of the condenser 41 and on the intake side of the evaporator 42.
Wherein, divide into fresh air valve 31 and exhaust valve 32's setting with the fresh air louver valve of airing exhaust through the louver baffle, realized the emergent wind channel of computer lab integrated effect to only control the fresh air louver valve of airing exhaust and just can realize the switching of emergent mode, compare in prior art and need set up emergent ventilation unit's scheme in addition alone, greatly reduce computer lab capital construction cost and save computer lab space.
EXAMPLE III
In this embodiment, the internal structure of the heat exchange device is the same as that of the heat exchange device in the first or second embodiment, and the improvement point is mainly that the heat exchange device is arranged on the shell 1; the housing 1 includes an indoor housing 15 and an outdoor housing 16; the indoor housing 15 is detachably connected with the outdoor housing 16; the partition 2 is located on the indoor case 15.
It should be noted that the indoor housing 15 and the outdoor housing 16 can be detachably connected by bolts, fasteners, etc., and the pipes between the condenser 41, the evaporator 42 and the compressor can pass through the partition plate 2; the heat exchange device of this embodiment includes at least two types, one type is the integral mode (suitable for the micro-module scene) when indoor casing 15 is connected with outdoor casing 16, another type is the split mode that indoor casing 15 and outdoor casing 16 are separated, when heat exchange device is the integral mode, can be convenient for carry, when heat exchange device is the split mode, can be applied to the multiple scenes including traditional computer lab scene, and the range of application is wide. Meanwhile, the heat exchange device in the integral mode does not need to be additionally connected with a pipe or a line during installation and filled with a refrigerant, so that the field engineering quantity is reduced.
Further, an air supply device 51 is disposed on one side of the housing 1 near the air supply outlet 12 in the first cavity.
An air outlet device 52 is disposed at a side of the housing 1 near the air outlet 14 in the second cavity. It should be noted that the air supply device 51 includes a plurality of air supply fans, the air exhaust device 52 includes a plurality of air exhaust fans, the fresh air valve 31 of the embodiment is disposed at a negative pressure inlet of the air supply device 51, and the air exhaust valve 32 is disposed at a negative pressure inlet of the air exhaust device 52.
Example four
The control method of the heat exchange device provided in this embodiment is applied to the heat exchange device in the first to third embodiments, and the control method includes:
s1011, acquiring the return air temperature at the return air inlet and acquiring the fresh air temperature at the fresh air inlet;
s1012, judging whether the fresh air temperature is lower than the return air temperature;
s1013, if so, opening the fresh air valve and the exhaust valve to a preset opening degree; when the outdoor temperature is low, the heat exchange device starts a new-return ratio mixed mode, and an outdoor cold source can be fully utilized;
s1014, if not, closing the fresh air valve and the exhaust valve, and starting the compressor; namely, when the outdoor temperature is higher, the internal circulation mode of the compressor can be adopted, and the conventional refrigeration effect is achieved.
In step S1013: if, then open after new blast gate and exhaust valve, still include:
s1021, acquiring the air supply temperature of the air supply outlet;
s1022, judging whether the air supply temperature is lower than a preset first temperature threshold value or not;
s1023, if so, maintaining the opening degrees of the fresh air valve and the exhaust valve;
s1024, if not, increasing the opening degrees of the fresh air valve and the exhaust valve;
at step S1024: if not, increasing the opening degree of the fresh air valve and the exhaust air valve, and then, further comprising:
s1031, judging whether the opening degrees of the fresh air valve and the exhaust valve reach the maximum value or not;
s1032, if yes, starting the compressor; and when the outdoor cold source is not enough to directly meet the heat dissipation requirement of the heat source, starting the compressor to supplement cold in an auxiliary manner.
And S1033, if not, increasing the opening degrees of the fresh air valve and the exhaust air valve.
The control method further comprises the following steps:
s1041, when the compressor or the heat exchange device is in a shutdown fault, opening the fresh air valve and the exhaust valve to the maximum opening degree, and adjusting the rotating speed of the air supply device and the exhaust device to the maximum rotating speed; when a starting request of the compressor is detected and the compressor is not started, the compressor can be judged to be in a fault state, or when a shutdown fault of the heat exchange device is alarmed, the air flow exchange is carried out between a heat source area and the outdoor space through the fresh air valve and the exhaust valve, the damage caused by continuous high temperature of target equipment is avoided, and an emergency ventilation device does not need to be additionally arranged in a micromodule or a container data center.
Further, the control method of the embodiment is further applied to the heat exchanger in the second embodiment, and the control method further includes:
s2011, acquiring the condensation outlet air temperature of the condenser, and acquiring the return air humidity value;
s2012, judging whether the return air humidity value is greater than a preset humidity threshold value and whether the condensation outlet air temperature is greater than a preset second temperature threshold value;
s2013, if yes, opening a bypass valve;
s2014, if not, judging whether the return air temperature is lower than a preset third temperature threshold and whether the condensation outlet air temperature is higher than a preset second temperature threshold;
in step S2014: after judging whether return air temperature is less than preset third temperature threshold and condensation air-out temperature is greater than preset second temperature threshold, still include:
s2015, if yes, opening a bypass valve;
and S2016, if not, closing the bypass valve.
It is to be added, among other things, that the bypass valve 33 is closed when one of the following conditions is fulfilled.
S2017, when the compressor is closed, or the condensed outlet air temperature is smaller than a preset second temperature threshold value, or the return air temperature is larger than the sum of a preset third temperature threshold value and a preset closing temperature value, the bypass valve is closed; wherein the shutdown temperature value is 0-5 ℃.
Further, the control method of the embodiment further includes deviation control over the bypass valve, specifically including:
s2021, presetting a first proportional relation between the temperature deviation and the opening degree of the bypass valve, and presetting a first integral relation between the temperature deviation and the opening degree of the bypass valve; wherein, the first proportional relation is as follows: u. ofp(k)＝KppX e (k), the first integral relation is:
wherein, KppA preset first temperature control scaling factor, e (k), a temperature deviation at the sampling time k times, and e (k) (a preset return air temperature set value-a return air temperature)/(a preset supply air temperature set value-a supply air temperature); t isipFor controlling the integration time for temperature, T is the operating adjustment period, pmiIs a preset first compensation value;
s2022, acquiring K temperature deviation values, wherein K is the sampling times;
s2023, obtaining a first opening value of the bypass valve according to the Kth temperature deviation value and the first proportional relation; obtaining a second opening value of the bypass valve according to the K temperature deviation values and the first integral relation;
s2024, summing the first opening value of the bypass valve, the second opening value of the bypass valve and a preset first compensation value to obtain an opening value of the K-th bypass valve; i.e. the opening value of the K-th bypass valve is u (K),
wherein u isp(k) Is the first opening value of the bypass valve ui(k) And a second bypass valve opening value.
And S2025, controlling the opening degree of the bypass valve according to the opening degree value.
Specifically, the bypass valve 33 is controlled by a deviation between the return air temperature and a return air temperature set value (selected return air temperature control) or a deviation between the supply air temperature and a supply air temperature set value (selected supply air temperature control), so that the opening degree of the bypass valve 33 can be accurately adjusted, and the control accuracy of the heat exchanger can be improved.
In addition, the opening degree of the exhaust valve 32 may be made the same as that of the bypass valve 33, or the following steps may be adopted for control;
s2031, presetting a second proportional relation between the air pressure difference value and the opening degree of the exhaust valve, and presetting a second integral relation between the air pressure difference value and the opening degree of the exhaust valve; wherein, the second proportional relation is: u. ofp2(k)＝Kpp2×e2(k) The second integral relation is:
wherein, Kpp2For a predetermined second air pressure control proportionality coefficient, e2(k) Obtaining an air pressure difference value at the sampling time of k times or an air pressure difference value between the air pressure value and a preset air pressure value, wherein the obtaining of the air pressure difference value depends on arranging a first air pressure sensor in a heat source area, if the air pressure value is not arranged, a second air pressure sensor needs to be arranged at a fresh air inlet 13, and the air pressure difference value is obtained through the difference value between the first air pressure sensor and the second air pressure sensor; t isip2Is qiIntegral time of pressure control, T is the operation regulation period, pmi2The second compensation value is preset;
s2032, K air pressure difference values are obtained, wherein K is the sampling times;
s2033, obtaining a first opening value of the exhaust valve according to the Kth air pressure difference value and the second proportional relation; obtaining a second opening value of the exhaust valve according to the K air pressure difference values and a second integral relation;
s2034, summing the first opening value of the exhaust valve, the second opening value of the exhaust valve and a preset second compensation value to obtain the opening value of the exhaust valve at the Kth time; i.e. the opening value of the K-th exhaust valve is u2(k)，
Wherein u isp2(k) Is the first opening value u of the exhaust valvei2(k) And a second bypass valve opening value.
And S2035, controlling the opening degree of the exhaust valve according to the opening degree value.
Further, as for the heat exchange device in the third embodiment, there is also the following control method:
s3011, presetting a third proportional relation between temperature deviation and air exhaust valve opening degree, presetting a third integral relation between temperature deviation and air exhaust valve opening degree, presetting a fourth proportional relation between humidity deviation and air exhaust valve opening degree, and presetting a fourth integral relation between humidity deviation and air exhaust valve opening degree;
s3012, judging whether an emergency instruction from the control terminal is obtained; the emergency instruction refers to an emergency instruction sent from the control terminal when the environment of the heat exchange device is changed from a split mode to an integral mode and the like; for example, when the mode of the heat exchange device needs to be adjusted, an emergency instruction can be sent out manually through the control terminal, so that the heat exchange device can adapt to environmental changes under the condition of no shutdown.
When the emergency command is obtained, performing step S3013 to obtain K temperature deviation values, wherein K is the sampling frequency; acquiring L humidity deviation values, wherein L is the sampling times;
s3014, obtaining a third opening degree value of the exhaust valve according to the Kth temperature deviation value and a third proportional relation; obtaining a fourth value of the exhaust valve according to the K temperature deviation values and a third integral relation; obtaining a fifth opening value of the exhaust valve according to the L-th humidity deviation value and the fourth proportional relation; obtaining a sixth opening value of the exhaust valve according to the L humidity deviation values and a fourth integral relation; wherein the third proportional relation is up3(k)＝Kpp3×e3(k) The third integral relation is
The fourth proportional relation is up4(L)＝Kpp4×e4(l) The fourth integral relation is
e3(k) Temperature deviation value for Kth sampling, e4(l) And the humidity deviation value is the difference value between the return air humidity value and the return air target value. Kpp3For a predetermined third temperature control proportionality coefficient, Kpp4For a preset fourth humidity control proportionality coefficient, Tip3Controlling the integration time, T, for temperatureip4Control of integration time for humidity, T the adjustment period for operation, pmi3Is a preset third compensation value.
S3015, summing the third opening value of the exhaust valve, the fourth opening value of the exhaust valve, the fifth opening value of the exhaust valve, the sixth opening value of the exhaust valve and a preset third compensation value to obtain the opening value of the exhaust valve at the Kth time; i.e. the opening value of the K-th exhaust valve is u3(k)，
Wherein u isp3(k) Is the third opening value u of the exhaust valvei3(k) Is the fourth opening value u of the exhaust valvep4(L) is the fifth opening value of the exhaust valve, ui4And (L) is the sixth opening value of the exhaust valve.
And S3016, controlling the opening degree of the exhaust valve according to the opening degree value.
Through the steps, the heat exchange device can overcome the environmental change and keep the cooling effect on target equipment such as a server and the like when the mode is switched.
On the basis of the above embodiment, the heat exchange device provided by this embodiment further includes a control system; the control system includes:
the memory stores a first proportional relation between the temperature deviation and the opening degree of the bypass valve and a first integral relation between the temperature deviation and the opening degree of the bypass valve;
the temperature sensor assembly is used for acquiring K temperature deviation values, wherein K is the sampling frequency;
the opening value calculation module is used for obtaining a first opening value of the bypass valve according to the Kth temperature deviation value and the first proportional relation; obtaining a second opening value of the bypass valve according to the K temperature deviation values and the first integral relation;
and the opening control module is used for summing the first opening value of the bypass valve, the second opening value of the bypass valve and a preset first compensation value to obtain the opening value of the K-th bypass valve and controlling the opening of the bypass valve according to the opening value.
The storage, the temperature sensor assembly, the opening value calculation module and the opening control module are electrically connected.
Further, the memory also stores a second proportional relation between the air pressure difference value and the opening degree of the exhaust valve and a second integral relation between the air pressure difference value and the opening degree of the exhaust valve;
the control system further comprises:
the air pressure sensor assembly is used for acquiring K air pressure difference values, wherein K is the sampling frequency;
the opening value calculation module is also used for obtaining a first opening value of the exhaust valve according to the Kth air pressure difference value and the second proportional relation; obtaining a second opening value of the exhaust valve according to the K air pressure difference values and a second integral relation;
the opening control module is further used for summing the first opening value of the exhaust valve, the second opening value of the exhaust valve and a preset second compensation value to obtain the opening value of the exhaust valve for the Kth time, and controlling the opening of the exhaust valve according to the opening value.
Wherein, the baroceptor subassembly is connected with the aperture control module electricity.
Furthermore, the memory also stores a third proportional relation between the temperature deviation and the opening degree of the exhaust valve and a third integral relation between the temperature deviation and the opening degree of the exhaust valve;
the control system also comprises a receiving module and a humidity sensor assembly;
the receiving module is used for judging whether an emergency instruction from the control terminal is obtained or not;
the humidity sensor assembly is used for acquiring L humidity deviation values, wherein L is the sampling times;
the opening value calculation module is further used for obtaining a third opening value of the exhaust valve according to the Kth temperature deviation value and a third proportional relation; obtaining a fourth value of the exhaust valve according to the K temperature deviation values and a third integral relation; obtaining a fifth opening value of the exhaust valve according to the L-th humidity deviation value and the fourth proportional relation; obtaining a sixth opening value of the exhaust valve according to the L humidity deviation values and a fourth integral relation;
the opening control module is also used for summing the third opening value of the exhaust valve, the fourth opening value of the exhaust valve, the fifth opening value of the exhaust valve, the sixth opening value of the exhaust valve and a preset third compensation value to obtain the opening value of the exhaust valve at the Kth time; i.e. the opening value of the K-th exhaust valve is u3(k) And the opening degree of the exhaust valve is controlled according to the opening degree value.
EXAMPLE five
The embodiment provides a micro-module, which is applied to scenes such as a data center and the like, wherein the micro-module comprises a heat source and a heat exchange device as in the first to third embodiments; the heat source is arranged on one side of the heat exchange device and is arranged between the air return opening 11 and the air supply opening 12.
The first to third embodiments describe specific structures and technical effects of the heat exchange device, and the micromodule provided by the embodiment introduces the heat exchange device and also has the technical effects.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A heat exchange device, characterized by comprising a housing (1); a partition plate (2) is arranged in the shell (1), and the partition plate (2) and the shell (1) enclose a first cavity and a second cavity which are separated in the shell (1);
the partition plate (2) is provided with a fresh air valve (31) and an exhaust air valve (32) at intervals;
an air return opening (11) and an air supply opening (12) are formed in the side wall, far away from the second cavity, of the first cavity at intervals along the horizontal direction, wherein the air return opening (11) is formed in one side, close to the exhaust valve (32), of the fresh air valve (31);
a fresh air opening (13) and an air outlet (14) are formed in the side wall, far away from the first cavity, of the second cavity at intervals along the vertical direction, wherein the fresh air opening (13) is arranged below the air outlet (14).
2. The heat exchange device according to claim 1, wherein a return air temperature sensor is arranged at the return air inlet (11), a fresh air temperature sensor is arranged at the fresh air inlet (13), and a supply air temperature sensor is arranged at the supply air outlet (12);
the shell (1) is also internally provided with a compressor, a condenser (41) and an evaporator (42) which are sequentially communicated, wherein the condenser (41) is arranged in the second cavity, the evaporator (42) is arranged in the first cavity, the condenser (41) is arranged between the fresh air inlet (13) and the air outlet (14), and the evaporator (42) is arranged between the air return inlet (11) and the air supply inlet (12);
the fresh air valve (31) is arranged on the air inlet side of the condenser (41) and the air outlet side of the evaporator (42);
the exhaust valve (32) is arranged on the air outlet side of the condenser (41) and the air inlet side of the evaporator (42).
3. The heat exchange device according to claim 2, wherein a bypass valve (33) is further arranged on the partition plate (2), the bypass valve (33) is arranged on the air outlet side of the condenser (41) and the air outlet side of the evaporator (42);
and a condensation temperature sensor is arranged at an opening of the bypass valve (33) close to one side of the condenser (41), and a return air humidity sensor is also arranged at the return air inlet (11).
4. A heat exchange device according to claim 3, characterised in that the housing (1) is located in the second chamber, and a humidifying device (43) is arranged between the air inlet side of the condenser (41) and the fresh air inlet (13).
5. The heat exchange device according to claim 1, wherein a fresh air exhaust louver valve is arranged on the partition plate (2), a louver partition plate is arranged in the fresh air exhaust louver valve, and the louver partition plate divides the fresh air exhaust louver valve into the fresh air valve (31) and the exhaust valve (32);
the shell (1) is also internally provided with a compressor, a condenser (41) and an evaporator (42) which are sequentially communicated, wherein the condenser (41) is arranged in the second cavity, the evaporator (42) is arranged in the first cavity, the condenser (41) is arranged between the fresh air inlet (13) and the air outlet (14), and the evaporator (42) is arranged between the air return inlet (11) and the air supply inlet (12);
the fresh air valve (31) is arranged on the air inlet side of the condenser (41) and the air outlet side of the evaporator (42);
the exhaust valve (32) is arranged on the air inlet side of the condenser (41) and the air inlet side of the evaporator (42).
6. A heat exchange device according to claim 1, characterized in that the housing (1) comprises an indoor housing (15) and an outdoor housing (16); the indoor shell (15) is detachably connected with the outdoor shell (16), and the partition plate (2) is located on the indoor shell (15).
7. The heat exchange device according to any one of claims 1 to 6, wherein the shell (1) is provided with an air supply device (51) at one side of the first cavity close to the air supply outlet (12);
an air outlet device (52) is arranged on one side, close to the air outlet (14), of the shell (1) in the second cavity.
8. A micromodule comprising a heat source and the heat exchange device of claim 1; the heat source is arranged on one side of the heat exchange device and is arranged between the air return opening (11) and the air supply opening (12).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121588156.8U CN215863744U (en) | 2021-07-13 | 2021-07-13 | Micromodule and heat exchange device |
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| CN202121588156.8U CN215863744U (en) | 2021-07-13 | 2021-07-13 | Micromodule and heat exchange device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113483397A (en) * | 2021-07-13 | 2021-10-08 | 北京海悟技术有限公司 | Micromodule, heat exchange device and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483397A (en) * | 2021-07-13 | 2021-10-08 | 北京海悟技术有限公司 | Micromodule, heat exchange device and control method thereof |
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