WO2023062005A1 - Armoire de distribution climatisée - Google Patents

Armoire de distribution climatisée Download PDF

Info

Publication number
WO2023062005A1
WO2023062005A1 PCT/EP2022/078248 EP2022078248W WO2023062005A1 WO 2023062005 A1 WO2023062005 A1 WO 2023062005A1 EP 2022078248 W EP2022078248 W EP 2022078248W WO 2023062005 A1 WO2023062005 A1 WO 2023062005A1
Authority
WO
WIPO (PCT)
Prior art keywords
control cabinet
sensor
climate
power supply
temperature
Prior art date
Application number
PCT/EP2022/078248
Other languages
German (de)
English (en)
Inventor
Nicola HERBST
Hartmut Henkel
Jochen Zeuch
Patrick Schweer
Stephan Sagebiel
Original Assignee
Phoenix Contact Gmbh & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Phoenix Contact Gmbh & Co. Kg filed Critical Phoenix Contact Gmbh & Co. Kg
Priority to EP22801419.7A priority Critical patent/EP4417020A1/fr
Publication of WO2023062005A1 publication Critical patent/WO2023062005A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0247—Electrical details of casings, e.g. terminals, passages for cables or wiring
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0212—Condensation eliminators
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20536—Modifications to facilitate cooling, ventilating, or heating for racks or cabinets of standardised dimensions, e.g. electronic racks for aircraft or telecommunication equipment
    • H05K7/20554—Forced ventilation of a gaseous coolant
    • H05K7/20572—Forced ventilation of a gaseous coolant within cabinets for removing heat from sub-racks, e.g. plenum
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20536—Modifications to facilitate cooling, ventilating, or heating for racks or cabinets of standardised dimensions, e.g. electronic racks for aircraft or telecommunication equipment
    • H05K7/207—Thermal management, e.g. cabinet temperature control

Definitions

  • the invention relates to the air conditioning of a switch cabinet.
  • Switch cabinets for accommodating electrical or electronic components are well known from the prior art.
  • Switch cabinets of this type can have a switch cabinet door, in which case the open state (closed or open) of the switch cabinet door can be detected by a door sensor.
  • a door sensor This is particularly important when such a switch cabinet is located in an unprotected area and is part of the safety-critical infrastructure in the field of energy, water, waste water or telecommunications supply.
  • the opening status of the control cabinet can then namely be detected by the door sensor and transmitted to a remote control/control system via a data connection. In this way, it is possible to detect unauthorized opening of the control cabinet, so that countermeasures against possible sabotage can be taken in good time.
  • Such control cabinets often contain electronic components with an optical display (e.g. LED, display) to inform the user about the current operating status and to warn of critical operating points.
  • an optical display e.g. LED, display
  • these displays also require electrical energy when the control cabinet door is closed, which is undesirable.
  • the temperature and humidity within the control cabinet should remain within a specified range to ensure proper functioning of the electrical or electronic components housed in the control cabinet.
  • the object of the invention is to create a correspondingly improved control cabinet. This object is achieved by a control cabinet according to the invention according to the main claim.
  • control cabinet according to the invention is used in accordance with the known control cabinets described at the outset for accommodating electrical and/or electronic components that can be accommodated in the control cabinet. It should be mentioned here that the invention is not limited to specific components with regard to the type of components housed in the switch cabinet.
  • the switch cabinet can therefore have a climate sensor (e.g. temperature sensor, humidity sensor) in order to measure a climate variable (e.g. temperature, humidity) in the switch cabinet.
  • a climate sensor e.g. temperature sensor, humidity sensor
  • the switch cabinet can have switch cabinet air conditioning in order to carry out active air conditioning of the switch cabinet as a function of the climate variable measured in the switch cabinet.
  • a power supply e.g. switching power supply
  • the power supply can be operated at different working points, which differ in terms of their energy efficiency, so that a different heat loss output is generated in the control cabinet at the different working points.
  • the control cabinet air conditioning can now adjust the operating point of the power supply in order to vary the power loss introduced.
  • control cabinet air conditioning sets an operating point with relatively good energy efficiency and a correspondingly low heat loss if the temperature in the control cabinet is too high and should therefore not be increased any further.
  • the switch cabinet climate control system has a climate controller that detects a measured variable, sets a manipulated variable, and regulates a controlled variable.
  • the controlled variable can be, for example, the temperature in the switch cabinet, the humidity in the switch cabinet or the dew point of the air in the switch cabinet.
  • the manipulated variable of the climate controller can be the operating point of the power supply, the fan speed of a fan in the control cabinet or the switching state of a first electrical consumer in the control cabinet, with the first consumer generating a state-dependent heat loss in the control cabinet depending on its switching state.
  • the measured variable of the climate controller is, for example, the temperature in the control cabinet, the humidity in the control cabinet or the dew point of the air in the control cabinet.
  • the climate controller can be a two-point controller that only has two possible states of the manipulated variable on the output side.
  • the two-position controller can either switch the fan on or off.
  • the climate controller can optionally set one of two possible operating points of the power supply.
  • the invention is not limited to a two-point controller, but can also be implemented with other controller types.
  • the climate controller When controlling by setting the operating point of the power supply--as already mentioned above--an operating point with a low energy efficiency and a correspondingly high power loss is preferably set when the measured temperature falls below a lower temperature limit value.
  • the climate controller preferably sets an operating point of the power supply with a high energy efficiency and a correspondingly low power loss if the measured temperature exceeds an upper temperature limit value.
  • the climate controller preferably provides a switching hysteresis, which is why the upper temperature limit value is preferably greater than the lower temperature limit value.
  • an operating point of the power supply with a low energy efficiency and a correspondingly high one is preferably used Heat dissipation set when the measured humidity exceeds an upper humidity limit.
  • the climate controller then sets an operating point for the power supply with high energy efficiency and a correspondingly low heat loss if the measured humidity falls below a lower humidity limit value.
  • a switching hysteresis is preferably provided.
  • the climate controller can also switch on or off the first consumer briefly mentioned above in the switch cabinet in order to influence the climate in the switch cabinet, in which case a switching hysteresis can also be provided.
  • Another way of influencing the climate in the switch cabinet is to switch the fan on or off or to raise or lower the fan speed, with switching hysteresis also being provided here.
  • the power supply has a first signal output in order to output a first enable signal when the temperature in the switch cabinet reaches a predetermined setpoint. Furthermore, the power supply can have a second signal output in order to output a second release signal when the humidity in the control cabinet reaches a predetermined setpoint. In addition, the power supply can have a third signal output to output an alarm signal that indicates a malfunction of the fan, the power supply outputting the alarm signal to the third signal output if the integrated temperature sensor detects that the internal temperature in the control cabinet exceeds a maximum value, wherein the maximum value of the indoor temperature is above the upper temperature limit value of the indoor temperature. To control the fan, the power supply can also have a multi-value control output, which not only allows the fan to be switched on or off easily, but also allows different fan speeds to be set.
  • the climate controller is structurally integrated into the power supply.
  • the climate sensor, the temperature sensor, the dew point sensor and/or the humidity sensor can be structurally separate from the power supply.
  • a wired or wireless connection can be provided between the aforementioned components.
  • the switch cabinet according to the invention can have an interface in order to output an operating variable (eg internal temperature in the switch cabinet, speed of the fan, switching state of the fan).
  • the fan can blow ambient air into the control cabinet. Alternatively, however, there is also the possibility that the fan blows the air out of the control cabinet. Furthermore, there is also the possibility that the fan circulates the air in the switch cabinet in order to avoid local temperature peaks in the switch cabinet. Within the scope of the invention, several fans can also be used, which combine the above-mentioned fan variants with one another.
  • control cabinet in accordance with the known control cabinets described above, has a control cabinet door that can be opened or closed as desired.
  • the control cabinet door can be a pivoting door that can be pivoted open or closed.
  • the control cabinet door there is also the alternative option for the control cabinet door to be a sliding door. The invention is therefore not limited to certain types of switch cabinet doors with regard to the type and mode of operation of the switch cabinet door.
  • control cabinet according to the invention can also have a door sensor which determines the open state (open or closed) of the control cabinet door.
  • At least one second electrical load with a specific power consumption can be located in the control cabinet according to the invention, which can be, for example, an LED display, a screen or a control cabinet light.
  • control cabinet according to the invention in accordance with the known control cabinets described above, can also contain a controller which is connected to the door sensor on the input side and determines the open state of the control cabinet door.
  • the controller transmits the opening status of the control cabinet door via a data connection to telecontrol/control technology in order to enable remote monitoring of the control cabinet.
  • the controller controls the second consumer (eg LED, display, control cabinet lighting) depending on the opening state the control cabinet door and thereby varies the power consumption of the second consumer depending on the open state of the control cabinet door.
  • the second load in the switch cabinet can be an electro-optical component, such as an LED display, a screen or a switch cabinet light.
  • electro-optical components are useless when the control cabinet door is closed, but they still consume electrical energy with the known control cabinet doors.
  • the invention therefore preferably provides that when the control cabinet door is closed, the control regulates the electro-optical component down or switches it off completely in order to reduce the power consumption of the electro-optical component when the control cabinet door is closed.
  • the electro-optical component is preferably switched off completely when the control cabinet door is closed, since the electro-optical component is not required when the control cabinet door is closed.
  • the second consumer in the switch cabinet controlled by the controller can alternatively carry an electrical voltage that is dangerous to touch, for example in the case of a power supply.
  • the controller can then switch the second load to an operating state without the electrical voltage that is dangerous to touch or switch it off completely in order to achieve protection against accidental contact. This increases operational safety, since after opening the control cabinet door there are no longer any electrical voltages in the control cabinet that are dangerous to touch.
  • the door sensor described above can be, for example, a brightness sensor that measures the brightness inside the control cabinet and detects an open state of the control cabinet door due to the penetration of ambient light.
  • the door sensor prefferably be a distance sensor which is arranged in the control cabinet and measures the distance from the inside of the control cabinet door. When the control cabinet door is pivoted outwards, this distance increases, from which the opening of the control cabinet door can be recognized.
  • the door sensor is a conventional door contact sensor.
  • the options for the technical realization of the door sensor mentioned above by way of example can also be combined with one another within the scope of the invention in order to enable redundant detection of the open state of the control cabinet door.
  • a door contact sensor can be combined with a brightness sensor.
  • control cabinet can contain a data logger which is connected to the door sensor and logs the opening status of the control cabinet door, in particular with a time stamp for each change in the opening status of the control cabinet door.
  • the data logger can also be combined with a transmission unit in order to transmit the opening status of the control cabinet door to an external monitoring unit, which can be done wirelessly or wired via a data bus, for example.
  • FIG. 1 shows a schematic perspective view of a control cabinet according to the invention with the control cabinet door open.
  • Figure 2 shows a schematic representation of the power supply in the control cabinet from Figure 1.
  • FIG. 3 shows a simplified control engineering equivalent circuit diagram to explain the control cabinet air conditioning.
  • FIG. 1 of a switch cabinet 1 has a housing body 2 with a switch cabinet door 3, which in this exemplary embodiment is designed as a pivoting door.
  • switch cabinet 1 there are several electrical components 4-7, with the invention not being limited to specific electrical components with regard to the type of electrical components 4-7.
  • power supply 8 in the switch cabinet 1 which is shown in FIG. 2 and will be described in detail later.
  • control cabinet 1 contains a door contact sensor 9 which determines the open state of the control cabinet door 3 and reports it to a controller 10 in the power supply 8 .
  • the controller 10 then controls a switch cabinet light 11 depending on the open state of the switch cabinet door 3 .
  • the switch cabinet lighting 11 is switched on when the switch cabinet door 3 is open, whereas the switch cabinet light 11 is switched off when the switch cabinet door 3 is closed. This is advantageous because the switch cabinet lighting 11 is not required when the switch cabinet door 3 is closed and can then be switched off, which saves electricity.
  • the power supply 8 has an integrated brightness sensor 12 that measures the brightness in the switch cabinet 1 . This also enables the open state of the control cabinet door 3 to be detected, since no light penetrates into the control cabinet 1 when the control cabinet door 3 is closed, which is detected by the brightness sensor 12 . On the other hand, when the control cabinet door 3 is opened, ambient light penetrates into the control cabinet 1 , which is also detected by the brightness sensor 12 . The brightness sensor 12 therefore reports the measured brightness to the controller 10, which derives the open state of the control cabinet door 3.
  • the controller 10 can therefore derive the open state of the switch cabinet door 3 from the output of the door contact sensor 9 and from the output signal of the brightness sensor 12, which enables redundant determination of the open state of the switch cabinet door 3.
  • controller 10 is connected to an external monitoring unit via a data bus 13, which is only shown schematically here.
  • a data bus 13 is only shown schematically here.
  • the opening status of the control cabinet door 3 can be transmitted to the external monitoring unit via the data bus 13 .
  • FIG. 3 shows a control-related equivalent circuit diagram to illustrate a further aspect of the invention, which relates to the air conditioning in the switch cabinet 1.
  • the power supply 8 has a switched-mode power supply 16 that can be operated at various operating points that differ in their energy efficiency and thus also in the heat loss Pneiz generated by the switched-mode power supply 16 in the switch cabinet 1 .
  • a fan 17 is provided for air conditioning of the control cabinet 1, which sucks in relatively cold ambient air and blows it into the control cabinet 1, so that the fan 17 generates a specific cooling capacity PKÜHL depending on the fan speed.
  • a temperature sensor 18 is also provided, which measures an internal temperature TIST in the switch cabinet 1 and forwards it to a subtractor 19 .
  • the subtractor 19 calculates a temperature deviation ⁇ T from the measured internal temperature TIST in the switch cabinet one 1 and a predetermined setpoint value TSOLL soll and forwards this to a controller 20 .
  • the controller 20 controls the speed of the fan 17 in order to air-condition the control cabinet 1.
  • the fan speed of the fan 17 is increased when the temperature TIST in the switch cabinet 1 is too high.
  • the controller 20 also controls the switched-mode power supply 16 and sets the operating point of the switched-mode power supply 16 .
  • an operating point with a relatively low energy efficiency and a correspondingly high heat loss Pneiz is set.
  • the switch cabinet air conditioning ensures that the internal temperature TIST in the switch cabinet 1 remains within a permissible temperature range, with faults being corrected that are caused, for example, by a fluctuating ambient temperature TUMBIENT.
  • the invention is not limited to the preferred embodiments described above. Rather, the invention also includes modifications and developments that also make use of the inventive concept and therefore in the fall protection area. In particular, the invention also claims protection for the subject matter and the features of the subclaims independently of the claims referred to in each case.
  • the invention thus comprises various aspects of the invention which are protected independently of one another. This applies in particular to the aspect of the invention relating to the control cabinet air conditioning, with this aspect of the invention also being protectable independently of the aspect of the invention relating to the control cabinet door.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)

Abstract

L'invention concerne la climatisation d'une armoire de distribution (1) destinée à recevoir des composants électriques et/ou électroniques (47a). L'armoire de distribution (1) comprend une alimentation en énergie (8), en particulier sous la forme d'une alimentation à découpage, l'alimentation en énergie (8) pouvant fonctionner à différents points de fonctionnement et présentant un rendement énergétique différent aux divers points de fonctionnement, le résultat étant que l'alimentation en énergie (8) produit une perte d'énergie thermique différente dans l'armoire de distribution (1) aux divers points de fonctionnement. L'armoire de distribution (1) comprend également un capteur climatique (18) pour mesurer une variable climatique dans l'armoire de distribution (1) et un système de climatisation d'armoire de distribution pour la climatisation de l'armoire de distribution (1) sur la base de la variable climatique mesurée dans l'armoire de distribution (1), le système de climatisation de l'armoire de distribution ajustant le point de fonctionnement de l'alimentation en énergie (8) et, en conséquence, la perte de puissance thermique produite par l'alimentation en énergie (8) dans l'armoire de distribution (1) sur la base de la variable climatique mesurée dans l'armoire de distribution (1).
PCT/EP2022/078248 2021-10-12 2022-10-11 Armoire de distribution climatisée WO2023062005A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22801419.7A EP4417020A1 (fr) 2021-10-12 2022-10-11 Armoire de distribution climatisée

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU500724A LU500724B1 (de) 2021-10-12 2021-10-12 Schaltschrank mit einem Türsensor
LULU500724 2021-10-12

Publications (1)

Publication Number Publication Date
WO2023062005A1 true WO2023062005A1 (fr) 2023-04-20

Family

ID=78829693

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2022/078248 WO2023062005A1 (fr) 2021-10-12 2022-10-11 Armoire de distribution climatisée

Country Status (3)

Country Link
EP (1) EP4417020A1 (fr)
LU (1) LU500724B1 (fr)
WO (1) WO2023062005A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3088984A1 (fr) * 2015-04-29 2016-11-02 ABB Technology AG Ensemble électrique comprenant des moyens de prévention de l'humidité
US20190172189A1 (en) * 2017-12-06 2019-06-06 Florin Pop Sensing and alert system for electrical switchgear
WO2021124518A1 (fr) * 2019-12-19 2021-06-24 東芝三菱電機産業システム株式会社 Dispositif de conversion de puissance et son procédé de fabrication

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9590396B2 (en) * 2015-05-13 2017-03-07 Eaton Corporation Circuit breaker panel board including illumination unit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3088984A1 (fr) * 2015-04-29 2016-11-02 ABB Technology AG Ensemble électrique comprenant des moyens de prévention de l'humidité
US20190172189A1 (en) * 2017-12-06 2019-06-06 Florin Pop Sensing and alert system for electrical switchgear
WO2021124518A1 (fr) * 2019-12-19 2021-06-24 東芝三菱電機産業システム株式会社 Dispositif de conversion de puissance et son procédé de fabrication
US20220376606A1 (en) * 2019-12-19 2022-11-24 Toshiba Mitsubishi-Electric Industrial Systems Corporation Power conversion device and method for manufacturing the same

Also Published As

Publication number Publication date
LU500724B1 (de) 2023-04-21
EP4417020A1 (fr) 2024-08-21

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