CN111238122A - Anti-condensation cabinet body and anti-condensation method for cabinet body - Google Patents

Anti-condensation cabinet body and anti-condensation method for cabinet body Download PDF

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Publication number
CN111238122A
CN111238122A CN202010124162.1A CN202010124162A CN111238122A CN 111238122 A CN111238122 A CN 111238122A CN 202010124162 A CN202010124162 A CN 202010124162A CN 111238122 A CN111238122 A CN 111238122A
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CN
China
Prior art keywords
cold plate
refrigerant
heat exchanger
cabinet
flow
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Pending
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CN202010124162.1A
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Chinese (zh)
Inventor
郭盼盼
张浏骏
段杰芳
张盛
郭腾飞
张方惠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Sigriner Step Electric Co Ltd
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Shanghai Sigriner Step Electric Co Ltd
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Priority to CN202010124162.1A priority Critical patent/CN111238122A/en
Publication of CN111238122A publication Critical patent/CN111238122A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/04—Preventing the formation of frost or condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/006—General constructional features for mounting refrigerating machinery components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/005—Mounting of control devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2600/00—Control issues
    • F25D2600/06—Controlling according to a predetermined profile
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The embodiment of the invention relates to the field of power electronics, and discloses an anti-condensation cabinet and an anti-condensation method for the cabinet. An anti-condensation cabinet comprising: cold plate, coolant pipeline communicated with cold plate, first flow regulating valve positioned on coolant pipeline and used for detecting temperature T of cold plate1And a cold plate temperature sensor for detecting the temperature T of the air surrounding the cold plate2The cold plate ambient air temperature sensor of (a); the first flow regulating valve is used for controlling the flow rate of the liquid when T is greater than T1Reducing refrigerant flow through the cold plate below a reference temperature, wherein the reference temperature is based on the T2And (4) determining in real time. In the invention, the condensation at the cold plate end can be avoided, and the safe transportation of the cabinet body is realizedAnd the cold plate end does not need to be wrapped with heat insulation cotton, so that the cabinet body is simple to mount and convenient to maintain.

Description

Anti-condensation cabinet body and anti-condensation method for cabinet body
Technical Field
The embodiment of the invention relates to the field of power electronics, in particular to an anti-condensation cabinet and an anti-condensation method for the cabinet.
Background
With the development of industry, the protection grade of the cabinet body is required to be higher and higher in the power electronic industry at present. For a cabinet body with heat dissipation requirements, the traditional heat dissipation mode is that outside air is discharged into the cabinet by a fan, and the heat in the cabinet is absorbed and then discharged out of the cabinet, so that the higher the protection grade is, the larger the heat dissipation resistance is. To the cabinet body that does not have the high protection of heat dissipation vent and the loss ratio is higher on the cabinet body, built-in heat exchanger and cold plate have begun to become a new high-efficient radiating mode, but this radiating mode can bring the condensation problem, in case the condensation takes place outside the heat exchanger, the comdenstion water is the safe operation that influences whole cabinet body on probably drippage electronic components.
The inventor finds that: the prior art adopts a method of wrapping heat-insulating cotton, and has the defects of different shapes of the heat-insulating cotton, complex cabinet body installation, long time consumption and complex maintenance. Therefore, it is desirable to provide a condensation preventing cabinet and a condensation preventing method for the cabinet, which are easy to install.
Disclosure of Invention
An object of an embodiment of the present invention is to provide an anti-condensation cabinet and an anti-condensation method for the cabinet, so that the cabinet can be effectively prevented from being condensed.
In order to solve the above technical problem, an embodiment of the present invention provides an anti-condensation cabinet, including: cold plate, refrigerant pipeline communicated with cold plate, first flow regulating valve positioned on refrigerant pipeline and used for detecting temperature T of cold plate1And a cold plate temperature sensor for detecting the temperature T of the air surrounding the cold plate2The cold plate ambient air temperature sensor of (a); the first flow regulating valve is used for regulating T1Reducing refrigerant flow through the cold plate below a reference temperature, wherein the reference temperature is based on T2And (4) determining in real time.
The embodiment of the invention also provides a condensation preventing method for the cabinet body, which is applied to the cabinet body and comprises the following steps: obtaining a Cold plate temperature T1And the ambient air temperature T of the cold plate2(ii) a According to T2Determining a reference temperature; when T is1And when the temperature is lower than the reference temperature, the flow of the refrigerant passing through the cold plate is reduced through the first flow regulating valve.
Compared with the prior art, the cold plate cooling cabinet has the advantages that the first flow regulating valve is arranged on the refrigerant pipeline connected with the cold plate, and when the temperature of the cold plate is lower than the reference temperature determined by the ambient air temperature of the cold plate, the refrigerant flow passing through the cold plate is reduced, so that condensation at the cold plate end is avoided, the safe operation of the cabinet body is realized, and the cold plate end is not required to be wrapped with heat insulation cotton, so that the cabinet body is simple to mount and convenient to maintain.
In addition, the cold storage cabinet also comprises a heat exchanger positioned in the cabinet body, and the heat exchanger is connected with the cold plate in series through a refrigerant pipeline; the refrigerant pipeline comprises a cold plate refrigerant inlet pipeline and a cold plate refrigerant outlet pipeline which are connected with the cold plate, and a heat exchanger refrigerant inlet pipeline and a heat exchanger refrigerant outlet pipeline which are connected with the heat exchanger; the first flow regulating valve is positioned on the cold plate refrigerant inlet pipeline and is also communicated with the cold plate refrigerant outlet pipeline or the heat exchanger refrigerant inlet pipeline through a first flow dividing pipeline.
In addition, the cold storage cabinet also comprises a heat exchanger positioned in the cabinet body, and the heat exchanger is connected with the cold plate in parallel through a refrigerant pipeline; the refrigerant pipeline comprises a cold plate refrigerant inlet pipeline and a cold plate refrigerant outlet pipeline which are connected with the cold plate, and a heat exchanger refrigerant inlet pipeline and a heat exchanger refrigerant outlet pipeline which are connected with the heat exchanger; the first flow regulating valve is positioned on the refrigerant inlet pipeline of the cold plate and is communicated with the refrigerant outlet pipeline of the cold plate or the refrigerant inlet pipeline of the heat exchanger through a first flow dividing pipeline.
In addition, the cold plate cold storage cabinet also comprises a heat exchanger positioned in the cabinet body, and the heat exchanger is connected with the cold plate in parallel through a refrigerant pipeline; the refrigerant pipeline comprises a cold plate refrigerant inlet pipeline and a cold plate refrigerant outlet pipeline which are connected with the cold plate, a heat exchanger refrigerant inlet pipeline and a heat exchanger refrigerant outlet pipeline which are connected with the heat exchanger, and the first flow regulating valve is respectively communicated with the cold plate refrigerant inlet pipeline and the heat exchanger refrigerant inlet pipeline.
In addition, the cold plate cooling device also comprises a relative humidity sensor positioned around the cold plate, wherein the relative humidity sensor is used for acquiring the relative humidity around the cold plate; the reference temperature is in particular in accordance with T2And the relative humidity around the cold plate is determined in real time. By increasing the relative humidity monitoring around the cold plate, one can follow T2And the reference temperature for preventing condensation is determined more accurately according to the relative humidity, so that the condensation prevention effect of the cabinet body is improved.
In addition, the heat exchanger also comprises a second flow regulating valve positioned on the heat exchanger refrigerant inlet pipeline, and the second flow regulating valve is also communicated with the heat exchanger refrigerant outlet pipeline through a second flow dividing pipeline; the second flow regulating valve is used for regulating the flow of the refrigerant passing through the heat exchanger so as to enable the relative humidity to be within a preset relative humidity range. Through set up the second flow control valve on the refrigerant inlet pipeline at the heat exchanger, can in time adjust the internal relative humidity of cabinet and in predetermineeing the relative humidity within range when the refrigerant flow that the adjustment cold drawing passes through and lead to the internal relative humidity of cabinet to change to guarantee the safe operation of the internal electronic components of cabinet.
In addition, according to T2Determining the reference temperature specifically includes: will T2As a reference temperature.
In addition, according to T2Acquiring the relative humidity around the cold plate before determining the reference temperature; according to T2Determining the reference temperature specifically includes: according to T2And calculating the dew point temperature T from the relative humidity3Will T3As a reference temperature. The dew point temperature is used as the reference temperature for preventing condensation, so that the temperature response precision of the first flow regulating valve can be improved, and the condensation prevention effect of the cabinet body is improved.
In addition, still include: when the relative humidity is smaller than the preset relative humidity range value, adjusting a second flow regulating valve to increase the flow of the refrigerant passing through the heat exchanger; and when the relative humidity is larger than the preset relative humidity range value, adjusting the second flow regulating valve to reduce the flow of the refrigerant passing through the heat exchanger. When the refrigerant flow passing through the cold plate is adjusted, the relative humidity in the cabinet body is stabilized through the second flow regulating valve, so that the safe operation of electronic components in the cabinet body is ensured.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is a schematic structural view of an anti-condensation cabinet according to a first embodiment of the present invention;
fig. 2 is another schematic structural diagram of an anti-condensation cabinet according to the first embodiment of the present invention;
fig. 3 is a schematic structural view of an anti-condensation cabinet according to the first embodiment of the present invention;
fig. 4 is a schematic structural view of an anti-condensation cabinet according to a second embodiment of the present invention;
fig. 5 is a schematic structural view of an anti-condensation cabinet according to a second embodiment of the present invention;
fig. 6 is a schematic flow chart of a cabinet condensation preventing method according to a third embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not constitute any limitation to the specific implementation of the present invention, and the embodiments may be mutually incorporated and referred to without contradiction.
Fig. 1 to 3 are schematic structural views of an anti-condensation cabinet according to a first embodiment of the present invention.
Referring to fig. 1, a first embodiment of the present invention relates to a condensation preventing cabinet 10, including: cold plate 101, refrigerant conduit in communication with cold plate 101, first flow regulator 102 positioned on refrigerant conduit, and for detecting cold plate temperature T1And a cold plate temperature sensor 103 for sensing the temperature T of the air surrounding the cold plate2The cold plate ambient air temperature sensor 104; the first flow regulating valve 102 is used for regulating the flow rate when T is1The flow of refrigerant through cold plate 101 may be reduced below a reference temperature, where the reference temperature is based on T2And (4) determining in real time.
The condensation preventing cabinet 10 according to the present embodiment will be described in detail with reference to the accompanying drawings.
The cabinet 10 in this embodiment is an electric power cabinet, and in other embodiments, the cabinet may be another cabinet that includes electronic devices and needs to cool the electronic devices.
The wall surface of the cabinet body 10 is provided with heat insulation cotton to solve the condensation problem of the wall surface of the cabinet body, and the exposed pipeline in the cabinet body 10 is provided with heat insulation cotton to solve the condensation problem of the exposed pipeline.
The cold plate 101 is used to cool down electronic components attached to the surface of the cold plate 101 in the cabinet 10, for example, power semiconductor modules with high heat generation such as Insulated Gate Bipolar Transistors (IGBTs). The refrigerant pipeline comprises a cold plate refrigerant inlet pipeline 106 and a cold plate refrigerant outlet pipeline 107 which are connected with the cold plate 101, the cold plate 101 is connected with a circulating refrigerant through a communication refrigerant pipeline, and the refrigerant circulates in the cold plate 101 to take away heat generated by electronic components. When the temperature of the surface of the cold plate 101 is low, air inside the cabinet 10 is likely to be condensed on the surface of the cold plate 101, and the falling of condensed water into the electronic components is likely to cause the failure of the electronic components inside the cabinet 10, so it is necessary to prevent the cold plate 101 from being condensed.
In this embodiment, the cabinet 10 further includes a cold plate temperature T for monitoring1The cold plate temperature sensor 103 of (a),and for monitoring the ambient air temperature T of the cold plate2And a first flow regulating valve 102 located on a refrigerant inlet conduit 106 of the cold plate 101. When the temperature of the cold plate T1Lower than the temperature T of the air surrounding the cold plate2At the determined reference temperature, the first flow regulator valve 102 may decrease the flow of refrigerant through the cold plate refrigerant inlet conduit 106 to increase the temperature of the cold plate 101, thereby avoiding condensation on the cold plate 101.
It should be noted that, in order to provide a better cooling effect, the cabinet body may further include a heat exchanger located in the cabinet body, and the heat exchanger is connected in series with the cold plate through a refrigerant pipeline; the refrigerant pipeline comprises a cold plate refrigerant inlet pipeline and a cold plate refrigerant outlet pipeline which are connected with the cold plate, and a heat exchanger refrigerant inlet pipeline and a heat exchanger refrigerant outlet pipeline which are connected with the heat exchanger; the first flow regulating valve is positioned on the cold plate refrigerant inlet pipeline and is also communicated with the cold plate refrigerant outlet pipeline or the heat exchanger refrigerant inlet pipeline through a first flow dividing pipeline.
With continued reference to fig. 1, in the present embodiment, the refrigerant conduits include a heat exchanger refrigerant inlet conduit 108 and a heat exchanger refrigerant outlet conduit 109 that are in communication with the heat exchanger 105, the cold plate refrigerant outlet conduit 107 is in communication with the heat exchanger refrigerant inlet conduit 108, and the refrigerant flows through the cold plate 101 and the heat exchanger 105 in sequence through the refrigerant conduits. It should be noted that the cold plate 101 is used to reduce the temperature of the electronic components attached to the surface of the cold plate 101, and the heat exchanger 105 is used to reduce the temperature of the environment inside the cabinet 10, so as to reduce the temperature of other electronic components inside the cabinet 10 that are not attached to the cold plate 101.
The first flow regulating valve 102 is a three-way valve located on the cold plate refrigerant inlet pipe 106, and the first flow regulating valve 102 is further communicated with the heat exchanger refrigerant inlet pipe 108 through a first diversion pipe 110. When the refrigerant flows through the first flow rate adjustment valve 102, the refrigerant is divided into a C1 flow path flowing into the cold plate refrigerant inlet duct 106 and a C2 flow path flowing into the first flow dividing duct 110, and the refrigerant flow rate ratio between the flow path C1 and the flow path C2 is adjusted by adjusting the first flow rate adjustment valve 102, thereby controlling the refrigerant flow rate passing through the cold plate 101.
In the present embodiment, the refrigerant flowing through the refrigerant pipe is a liquid capable of transferring heat, for example, circulating cooling water, and in other embodiments, the refrigerant may be another material commonly used in the art, and the material of the refrigerant is not limited at all.
It is understood that the cabinet 10 further includes a software control system therein, which obtains the cold plate temperature T monitored by the cold plate temperature sensor 103 in real time1And the cold plate ambient air temperature T as monitored by the cold plate ambient air temperature sensor2And according to the temperature T of the air surrounding the cold plate2Determining the reference temperature in real time and determining the temperature T around the cold plate1When the temperature is lower than the determined reference temperature, the software control system sends regulation information to the first flow regulating valve 102, and the first flow regulating valve 102 regulates the flow ratio of the C1 flow path and the C2 flow path to reduce the refrigerant flow passing through the cold plate 101 through the C1 flow path, so as to raise the temperature of the cold plate 101 end and restore the cold plate 101 to a non-condensation state, wherein the non-condensation state refers to the cold plate temperature T1Higher than the temperature T of the air surrounding the cold plate2。
Furthermore, condensation may occur at the cold plate 101 end not only with the ambient air temperature T of the cold plate2In relation to the relative humidity of the air surrounding the cold plate, therefore, in order to improve the accuracy of the temperature response of the cabinet 10 in preventing condensation, in the present embodiment, referring to fig. 1, the cabinet 10 may further include a relative humidity sensor 111 located around the cold plate 101, where the relative humidity sensor 111 is used to acquire the relative humidity around the cold plate 101; the reference temperature is in particular in accordance with T2And the relative humidity around the cold plate 101 is determined in real time.
Specifically, the software system within the cabinet 10 extracts the board ambient temperature T in real time1And the temperature T of the air surrounding the cold plate2And the relative humidity around the cold plate. The software system is based on the temperature T of the air surrounding the cold plate2Calculating real-time dew point temperature T from relative humidity around cold plate3And at the temperature T around the cold plate1Below the dew point temperature T calculated in real time3Then, control information is sent to the first flow regulating valve 102,the flow ratio of the C1 flow path and the C2 flow path may be adjusted to decrease the refrigerant flow through the cold plate 101 via the C1 flow path, thereby increasing the temperature of the cold plate 101 such that the temperature of the cold plate 101 is above the dew point temperature T3。
It should be noted that when the temperature T of the cold plate is monitored1When the temperature rises to the preset threshold value of the system, the software system may further send control information to the first flow regulating valve 102, and the first flow regulating valve 102 may adjust the flow ratio between the C1 flow path and the C2 flow path to increase the flow rate of the refrigerant passing through the cold plate 101 through the C1 flow path, thereby reducing the temperature at the end of the cold plate 101.
In addition, in order to reduce the influence on the relative humidity in the cabinet 10 when the refrigerant flow passing through the cold plate 101 is adjusted, referring to fig. 1, in this embodiment, the cabinet 10 may further include a second flow regulating valve 112 located on the heat exchanger refrigerant inlet pipeline 108, and the second flow regulating valve 112 is further communicated with the heat exchanger refrigerant outlet pipeline 109 through a second diversion pipeline 113; the second flow rate adjustment valve 112 is used for adjusting the flow rate of the refrigerant passing through the heat exchanger 105 so that the relative humidity is within a preset relative humidity range.
Adjusting the refrigerant flow through the cold plate 101 affects the temperature of the refrigerant flowing through the heat exchanger 105 and thus the relative humidity around the cold plate. For example, when the flow rate of the refrigerant flowing through the cold plate 101 in the C1 flow path is decreased and the flow rate of the refrigerant flowing through the C2 flow path is increased, since the refrigerant flowing through the C1 flow path takes away heat from the cold plate 101 after flowing through the cold plate 101, when the flow rate of the refrigerant flowing through the C1 flow path is decreased and the flow rate of the refrigerant flowing through the C2 flow path is increased, the amount of heat transferred by the refrigerant after flowing through the cold plate 101 is decreased, so that the temperature of the refrigerant flowing through the heat exchanger 105 is decreased, the effect of the heat exchanger 105 in cooling the ambient temperature in the cabinet 10 is enhanced, and the relative. In order to ensure that electronic components in the cabinet body operate within a safe relative humidity range, the relative humidity in the cabinet body needs to be stabilized.
Specifically, the second flow rate adjustment valve 112 is a three-way valve located on the heat exchanger refrigerant inlet pipe 108, the second flow rate adjustment valve 112 is also communicated with the heat exchanger refrigerant outlet pipe 109 through a second branch pipe 113, and after passing through the second flow rate adjustment valve 112, the refrigerant is divided into a C3 flow path communicated with the heat exchanger refrigerant inlet pipe 108 and a C4 flow path communicated with the heat exchanger refrigerant outlet. When the software system acquires that the relative humidity around the cold plate detected in real time by the relative humidity sensor 111 is smaller than a preset relative humidity range value, control information is sent to the second flow regulating valve 112, and the refrigerant flow ratio of the C3 flow path and the C4 flow path is regulated to increase the refrigerant flow of the C3 flow path; when the software system obtains that the relative humidity around the cold plate detected in real time by the relative humidity sensor 111 is greater than the preset relative humidity range value, the refrigerant flow ratio of the C3 flow path and the C4 flow path is adjusted to increase or decrease the refrigerant flow of the C3 flow path.
In other embodiments, the cabinet body may further include a fan, and when the relative humidity around the cold plate, which is obtained by the software system and detected in real time by the relative humidity sensor, is smaller than a preset relative humidity range value, control information is sent to the fan to increase the air volume; when the software system obtains that the relative humidity around the cold plate detected by the relative humidity sensor in real time is larger than a preset relative humidity range value, control information is sent to the fan to reduce the air volume.
In other embodiments, referring to fig. 2, since the cold plate 101 and the heat exchanger 105 are connected in series, the cold plate refrigerant outlet conduit 107 is communicated with the heat exchanger refrigerant inlet conduit 108, and the second flow regulating valve 112 may be located on the cold plate refrigerant outlet conduit 107. It can be understood that in the serial scheme, the refrigerant flow rate passing through the C1 flow path is generally greater than the refrigerant flow rate passing through the C2 flow path, and the second flow regulating valve 112 can regulate the refrigerant flow rate passing through the heat exchanger by regulating the refrigerant flow rate of the C3 flow path, thereby realizing the regulation and control of the relative humidity.
In other embodiments, referring to fig. 3, the refrigerant may sequentially flow through the heat exchanger 105 and the cold plate 101, the first flow rate adjustment valve 102 may be located on the refrigerant outlet conduit 109 of the heat exchanger 105, the first branch conduit 110 is in communication with the cold plate refrigerant outlet conduit 107, and the second branch conduit 113 of the second flow rate adjustment valve 112 is in communication with the cold plate refrigerant inlet conduit 106.
Compared with the prior art, the cold prevention device provided by the embodimentThe condensation cabinet 10 is provided with a first flow regulating valve 102 on a refrigerant pipeline connected with a cold plate 101 and is used for regulating the temperature T of the cold plate1Lower than the temperature T of the air surrounding the cold plate2During the reference temperature confirmed, the refrigerant flow through the cold plate 101 is reduced, thereby avoiding condensation at the cold plate 101 end, realizing safe operation of the cabinet body 10, and the cold plate 101 end does not need to be wrapped with heat preservation cotton, thereby enabling the cabinet body 10 to be simple to install and convenient to maintain.
A second embodiment of the present invention relates to a condensation preventing cabinet. The second embodiment is substantially the same as the first embodiment, and mainly differs therefrom in that: in a first embodiment, the cold plates are connected in series by refrigerant conduits to the heat exchanger, while in a second embodiment of the invention, the cold plates are connected in parallel by refrigerant conduits to the heat exchanger.
Fig. 4 and 5 are schematic structural diagrams of the condensation preventing cabinet provided in the present embodiment, and the condensation preventing cabinet provided in the present embodiment will be described in detail below with reference to the accompanying drawings, and for the same or similar technical details, reference is made to the detailed description of the previous embodiment, and no further description is given here.
Referring to fig. 4, the cabinet 10 includes a cold plate 101, a cold plate temperature sensor 103, a cold plate ambient temperature air sensor 104, a relative humidity sensor 111, a heat exchanger 105, a first flow regulating valve 102, a second flow regulating valve 112, a cold plate refrigerant inlet conduit 106, a cold plate refrigerant outlet conduit 107, a heat exchanger refrigerant inlet conduit 108, a heat exchanger refrigerant outlet conduit 109, and a second shunt conduit 113.
In the present embodiment, the first flow rate adjustment valve 102 communicates with the cold plate refrigerant inlet pipe 106 and the heat exchanger refrigerant inlet pipe 108, respectively, and the refrigerant is divided into two flow paths after passing through the first flow rate adjustment valve 102, i.e., a C1 flow path flowing to the cold plate 101 via the cold plate refrigerant inlet pipe 106 and a C2 flow path flowing to the heat exchanger 105 via the heat exchanger refrigerant inlet pipe 108. The refrigerant flow rate through cold plate 101 is reduced by adjusting the first flow rate adjustment valve 102 to adjust the refrigerant flow rate ratio between the C1 flow path and the C2 flow path.
In another embodiment, referring to fig. 5, the first flow regulating valve 102 is disposed on the cold plate refrigerant inlet conduit 106, and the first flow regulating valve 102 is further communicated with the cold plate refrigerant outlet conduit 107 via a first branch conduit 110, and the C2 flow path is flowing to the cold plate refrigerant outlet conduit 107 via the first branch conduit 110. When the first flow rate adjustment valve 102 is adjusted, the flow rate ratio between the C1 flow path and the C2 flow path may be adjusted, thereby changing the flow rate of the refrigerant passing through the cold plate 101. At this time, the adjustment of the first flow rate adjustment valve 102 does not affect the refrigerant flow rate of the heat exchanger 105, so that the influence on the temperature inside the cabinet 10 is small, and further the influence on the relative humidity of the environment of the cabinet 10 is small. In other embodiments, the first diversion pipeline may also be communicated with a heat exchanger refrigerant inlet pipeline.
Compared with the prior art, the condensation prevention cabinet 10 provided by the embodiment has the advantages that the first flow regulating valve 102 is arranged on the refrigerant pipeline connected with the cold plate 101, and the temperature T of the cold plate is controlled1Lower than the temperature T of the air surrounding the cold plate2During the reference temperature confirmed, the refrigerant flow through the cold plate 101 is reduced, thereby avoiding condensation at the cold plate 101 end, realizing safe operation of the cabinet body 10, and the cold plate 101 end does not need to be wrapped with heat preservation cotton, thereby enabling the cabinet body 10 to be simple to install and convenient to maintain.
Accordingly, a third embodiment of the present invention provides a method for preventing condensation of a cabinet, which is applied to the cabinet, and includes: obtaining a Cold plate temperature T1And the ambient air temperature T of the cold plate2(ii) a According to T2Determining a reference temperature; when T is1And when the temperature is lower than the reference temperature, the flow of the refrigerant passing through the cold plate is reduced through the first flow regulating valve.
Fig. 6 is a schematic flow chart of the cabinet condensation preventing method according to the present embodiment, and the cabinet condensation preventing method according to the present embodiment will be described in detail below with reference to fig. 6, and the same or similar technical details may refer to the detailed description of the above embodiment and are not repeated herein.
S1, acquiring the temperature T of the cold plate1And the ambient air temperature T of the cold plate2。
Cold plate temperature T is obtained through cold plate temperature sensor in cabinet body1Through internal cooling of the cabinet bodyThe board ambient air temperature sensor acquires the ambient air temperature T2。
S2, according to T2A reference temperature is determined.
In this embodiment, T is2As a reference temperature. In other manners, before step S2, the relative humidity around the cold plate is also obtained through the relative humidity sensor around the cold plate; according to T2Determining the reference temperature specifically includes: according to T2And calculating the dew point temperature T from the relative humidity3Will T3As a reference temperature. According to T2And relative humidity calculating real-time dew point temperature T3At a dew point temperature T3As the reference temperature for preventing condensation, the temperature response precision of the first flow regulating valve can be improved, so that the condensation preventing effect of the cabinet body is improved.
S3, when T1And when the temperature is lower than the reference temperature, the flow of the refrigerant passing through the cold plate is reduced through the first flow regulating valve.
Specifically, the first flow rate adjusting valve is a three-way valve, and the refrigerant is divided into a C1 flow path and a C2 flow path after passing through the first flow rate adjusting valve, when T is1And when the temperature is lower than the reference temperature, the flow of the refrigerant to the cold plate through the C1 flow path is reduced by adjusting the first flow regulating valve.
And S4, adjusting the relative humidity in the cabinet body to be within a preset relative humidity range.
Specifically, the second flow regulating valve is a three-way valve positioned on a refrigerant inlet pipeline of the heat exchanger, the second flow regulating valve is also communicated with a refrigerant outlet pipeline of the heat exchanger through a second diversion pipeline, and after flowing through the second flow regulating valve, the refrigerant is divided into a C3 flow path communicated with the refrigerant inlet pipeline of the heat exchanger and a C4 flow path communicated with the refrigerant outlet flow path of the heat exchanger. When the software system acquires that the ambient relative humidity of the cold plate detected by the relative humidity sensor in real time is smaller than a preset relative humidity range value, sending control information to the second flow regulating valve, and adjusting the refrigerant flow ratio of the C3 flow path and the C4 flow path to increase the refrigerant flow of the C3 flow path; when the software system obtains that the relative humidity around the cold plate detected by the relative humidity sensor in real time is larger than the preset relative humidity range value, the refrigerant flow ratio of the C3 flow path and the C4 flow path is adjusted to increase or decrease the refrigerant flow of the C3 flow path.
In other embodiments, the relative humidity can be adjusted by adjusting the air volume of the fan in the cabinet. When the software system acquires that the relative humidity around the cold plate detected by the relative humidity sensor in real time is smaller than a preset relative humidity range value, sending control information to the fan, and increasing the air volume of the fan to increase the relative humidity in the cabinet body; when the software system obtains that the relative humidity around the cold plate detected by the relative humidity sensor in real time is larger than the preset relative humidity range value, control information is sent to the fan, and the air volume of the fan is reduced so as to reduce the relative humidity in the cabinet body.
Compared with the prior art, the condensation preventing method for the cabinet body provided by the embodiment is matched with the cabinet body in the embodiment, and the cabinet body can be prevented from condensing at the cold plate end by adjusting the valve in the cabinet body, so that the safe operation of the cabinet body is realized, and the cabinet body is simple to install and convenient to maintain.
The steps of the above methods are divided for clarity, and it is within the scope of the present patent to combine the steps into one step or to split some steps into multiple steps when implementing the methods, as long as the same logical relationship is included.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific embodiments for practicing the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. An anti-condensation cabinet, comprising:
cold plate, coolant pipeline communicated with cold plate, first flow regulating valve positioned on coolant pipeline and used for detecting temperature T of cold plate1And a cold plate temperature sensor for detecting the temperature of the air surrounding the cold plateDegree T2The cold plate ambient air temperature sensor of (a);
the first flow regulating valve is used for controlling the flow rate of the liquid when T is greater than T1Reducing refrigerant flow through the cold plate below a reference temperature, wherein the reference temperature is based on the T2And (4) determining in real time.
2. The condensation resistant cabinet according to claim 1, further comprising a heat exchanger located within the cabinet, the heat exchanger being in series with the cold plate via the refrigerant conduit; the refrigerant pipelines comprise a cold plate refrigerant inlet pipeline and a cold plate refrigerant outlet pipeline which are connected with the cold plate, and a heat exchanger refrigerant inlet pipeline and a heat exchanger refrigerant outlet pipeline which are connected with the heat exchanger; the first flow regulating valve is positioned on the cold plate refrigerant inlet pipeline and is communicated with the cold plate refrigerant outlet pipeline or the heat exchanger refrigerant inlet pipeline through a first flow distribution pipeline.
3. The condensation resistant cabinet of claim 1, further comprising a heat exchanger located within the cabinet, the heat exchanger being connected in parallel with the cold plate via a refrigerant conduit; the refrigerant pipelines comprise a cold plate refrigerant inlet pipeline and a cold plate refrigerant outlet pipeline which are connected with the cold plate, and a heat exchanger refrigerant inlet pipeline and a heat exchanger refrigerant outlet pipeline which are connected with the heat exchanger; the first flow regulating valve is positioned on the cold plate refrigerant inlet pipeline and is communicated with the cold plate refrigerant outlet pipeline or the heat exchanger refrigerant inlet pipeline through a first flow distribution pipeline.
4. The condensation resistant cabinet according to claim 1, further comprising a heat exchanger located within the cabinet, the heat exchanger being connected in parallel with the cold plate via the refrigerant conduit; the refrigerant pipeline comprises a cold plate refrigerant inlet pipeline and a cold plate refrigerant outlet pipeline which are connected with the cold plate, and a heat exchanger refrigerant inlet pipeline and a heat exchanger refrigerant outlet pipeline which are connected with the heat exchanger, wherein the first flow regulating valve is respectively communicated with the cold plate refrigerant inlet pipeline and the heat exchanger refrigerant inlet pipeline.
5. The condensation prevention cabinet according to any one of claims 2 to 4, further comprising a relative humidity sensor located around the cold plate for acquiring the relative humidity around the cold plate; the reference temperature is in particular in accordance with the T2And the relative humidity around the cold plate is determined in real time.
6. The condensation prevention cabinet according to claim 5, further comprising a second flow control valve located on the heat exchanger coolant inlet duct, and the second flow control valve is further in communication with the heat exchanger coolant outlet duct via a second bypass duct; the second flow regulating valve is used for regulating the flow of the refrigerant passing through the heat exchanger so as to enable the relative humidity to be within a preset relative humidity range.
7. An anti-condensation method for a cabinet, which is applied to the cabinet of any one of claims 1 to 6, comprising:
obtaining a Cold plate temperature T1And the ambient air temperature T of the cold plate2；
According to the T2Determining a reference temperature;
when said T is1And when the temperature is lower than the reference temperature, the flow of the refrigerant passing through the cold plate is reduced through a first flow regulating valve.
8. The cabinet condensation preventing method according to claim 7, wherein the T is2Determining the reference temperature specifically includes: will be the T2As the reference temperature.
9. The cabinet condensation prevention method of claim 7, further comprising:
in said according to said T2Acquiring the relative humidity around the cold plate before determining the reference temperature;
said according to said T2Determining the reference temperature specifically includes: according to the T2And the calculated dew point temperature T of the relative humidity3The said T is3As the reference temperature.
10. The cabinet condensation prevention method of claim 9, further comprising: when the relative humidity is smaller than the preset relative humidity range value, adjusting a second flow regulating valve to increase the flow of the refrigerant passing through the heat exchanger; and when the relative humidity is greater than the preset relative humidity range value, adjusting the second flow regulating valve to reduce the flow of the refrigerant passing through the heat exchanger.
CN202010124162.1A 2020-02-27 2020-02-27 Anti-condensation cabinet body and anti-condensation method for cabinet body Pending CN111238122A (en)

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Application publication date: 20200605