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WO2017138846A1 - Capteur thermoélectrique de givrage - Google Patents

Capteur thermoélectrique de givrage Download PDF

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Publication number
WO2017138846A1
WO2017138846A1 PCT/RU2017/000063 RU2017000063W WO2017138846A1 WO 2017138846 A1 WO2017138846 A1 WO 2017138846A1 RU 2017000063 W RU2017000063 W RU 2017000063W WO 2017138846 A1 WO2017138846 A1 WO 2017138846A1
Authority
WO
WIPO (PCT)
Prior art keywords
ice
sensor
thermoelectric
ice formation
formation
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/RU2017/000063
Other languages
English (en)
Russian (ru)
Inventor
Геннадий Гюсамович ГРОМОВ
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2017138846A1 publication Critical patent/WO2017138846A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D15/00—De-icing or preventing icing on exterior surfaces of aircraft
    • B64D15/20—Means for detecting icing or initiating de-icing

Definitions

  • the proposed utility model relates to means of signaling and control and can be used for remote detection of icing and determination of environmental conditions similar to conditions for the formation or predisposition to icing of various surfaces, for example, surfaces of aircraft, in particular the fuselage, wings, propellers or aircraft rotor blades.
  • the probability of occurrence of ice cover depends on local environmental conditions, such as atmospheric temperature, atmospheric pressure, air humidity, etc.
  • icing sensors are used, the operation of which is based on various direct or indirect methods for determining the presence of icing or a predisposition to icing.
  • the device determines the thickness of the water film, which determine the possible freezing point. Depending on the parameters of a particular section of the aqueous film, it is heated or cooled, and the film thickness is determined by analyzing the temperature limits during heating or cooling.
  • the Peltier element is used to heat or cool an aqueous film, the temperature of which is measured using a thermocouple and calculated using a microprocessor.
  • the design of the known device [2] uses a Peltier thermoelectric element as a device for measuring the temperature difference. Ice formation is detected by measuring changes in the heat flux due to the release of latent heat during the ice formation process, which causes the generation of stress at the ends of the Peltier element.
  • ice formation is determined satisfactorily by stabilization of the phase transition temperature (water crystallization) for a certain time, and in the heating cycle, this stabilization (melting of the ice layer) is less noticeable, therefore, in the heating cycle, the determination of ice formation is very difficult;
  • the objective of the proposed utility model is to create a multifunctional efficient and reliable means for detecting icing or a predisposition to icing of various surfaces directly in a direct and accurate way.
  • thermoelectric icing detection sensor has the ability to calculate the intensity of ice formation and the thickness of the ice layer by integrating the heat of the heat flux passed through the sensor over the time period of ice formation at a known specific heat of ice formation.
  • thermoelectric heat flow sensor 1 - thermoelectric heat flow sensor
  • UD is the signal of the heat flux sensor
  • A is water
  • Tz is the temperature on the surface of the Peltier element 2
  • FIG. Figure 5 shows the temperature change on the surface of the Peltier element 2 Tz and on the sensitive surface of the heat flux sensor 1 at different thicknesses of the water layer, in increasing T 2-1> T 2-2 , T 2 -z (heating cycle).
  • FIG. 6 shows the readings of the heat flux sensor 1 in the heating cycle.
  • thermoelectric sensor for detecting icing or a predisposition to icing contains a thermoelectric module made in the form of a Peltier element 2.
  • thermoelectric sensor for detecting icing or a predisposition to icing is equipped with a thermoelectric heat flow sensor 1 connected to the lower part 16 to the Peltier element 2, the opposite upper part 1a, which forms an external surface sensitive to the formation and predisposition to ice formation.
  • thermoelectric heat flow sensor 1 The upper part 1a of the thermoelectric heat flow sensor 1 is provided with a temperature sensor 3.
  • thermoelectric heat flow sensor 1 Since water is prone to overcooling, at the beginning the temperature of the external sensitive surface of the upper part 1a of the thermoelectric heat flow sensor 1 drops below the ice formation temperature, and then quickly returns to the ice formation temperature. Formed temperature “plateau”, the duration of which depends on the amount of water which is crystallized in the ice (Fig. 3, Tr-2- v T 2, T 2 -s> respectively).
  • the total value of the passed heat of crystallization Q depends on the amount of water on the outer sensitive surface of the upper part 1a of the thermoelectric heat flow sensor 1. The more water, the greater this total heat (Fig. 4, Qj, Q 2 , Q 3 , respectively).
  • ice density p 917 kg / m it is possible to accurately determine the thickness h of the ice layer or the total amount (mass) of ice g on the sensitive surface of the upper parts la of the thermoelectric heat flow sensor according to formulas 1 or 2, respectively.
  • h p (1)
  • FIG. Figures 5 and 6 show typical readings of the temperature sensor 3 of the thermoelectric heat flow sensor 1, respectively, during the heating cycle by the Peltier element 2. Moreover, the time dependences for cases of different ice formation intensities on the sensitive surface of the upper part 1a of the thermoelectric heat flow sensor 1 are shown.
  • the Peltier element 2 starts a heating cycle of the thermoelectric heat flow sensor and, accordingly, its sensitive external surface of the upper part 1a.
  • the total value of the passed heat of melting ice shows the amount of ice on the outer sensitive surface of the upper part 1a of the thermoelectric heat flow sensor. The more ice, the greater this total heat (Fig. 6, Qi, Q2> b, respectively).
  • Continuous icing monitoring includes successive heating and cooling cycles with a metrologically accurate determination of icing or a predisposition to icing on the surface in both phases (water crystallization and ice melting).
  • thermoelectric sensor for detecting icing or a predisposition to icing on the surface.
  • thermoelectric icing detection sensor contains a Peltier element 2;

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

Le modèle d'utilité de l'invention concerne des moyens de signalisation et de contrôle et peut être utilisée pour détecter à distance le givrage et déterminer les conditions du milieu environnant qui sont similaires et propices au givrage de différentes surfaces. Le capteur thermoélectrique de détection de givrage d'une surface ou d'une tendance à celui-ci comprend un module thermoélectrique réalisé sous la forme d'un élément Peltier. Le capteur de détection de givrage est doté d'un capteur de flux thermique relié par sa partie inférieure comprenant l'élément Peltier et dont la partie opposée supérieure forme une surface sensible à la formation de glace. La partie supérieure du capteur thermoélectrique comprend un capteur de température. L'invention assure une meilleure sensibilité au givrage ou à ne tendance à celui-ci tout en améliorant la précision métrologique de détermination de la formation du givre ou une tendance à celle-ci.
PCT/RU2017/000063 2016-02-10 2017-02-09 Capteur thermoélectrique de givrage Ceased WO2017138846A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2016104432 2016-02-10
RU2016104432 2016-02-10

Publications (1)

Publication Number Publication Date
WO2017138846A1 true WO2017138846A1 (fr) 2017-08-17

Family

ID=59563493

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2017/000063 Ceased WO2017138846A1 (fr) 2016-02-10 2017-02-09 Capteur thermoélectrique de givrage

Country Status (1)

Country Link
WO (1) WO2017138846A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023080810A1 (fr) * 2021-11-03 2023-05-11 Общество С Ограниченной Ответственностью "Микролаб" Capteur thermoélectrique de givrage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6511220B1 (en) * 1997-09-09 2003-01-28 Boschung Mecatronic Ag Method and device for generating a signal according to a liquid film on a surface
US20100116940A1 (en) * 2007-04-11 2010-05-13 Nicolas Picco Method and device for detecting rime and/or rime conditions on a flying aircraft
RU2534493C2 (ru) * 2008-12-18 2014-11-27 Пенни Энд Джайлз Эроспейс Лимитед Система и способ применения датчика обледенения

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6511220B1 (en) * 1997-09-09 2003-01-28 Boschung Mecatronic Ag Method and device for generating a signal according to a liquid film on a surface
US20100116940A1 (en) * 2007-04-11 2010-05-13 Nicolas Picco Method and device for detecting rime and/or rime conditions on a flying aircraft
RU2534493C2 (ru) * 2008-12-18 2014-11-27 Пенни Энд Джайлз Эроспейс Лимитед Система и способ применения датчика обледенения

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023080810A1 (fr) * 2021-11-03 2023-05-11 Общество С Ограниченной Ответственностью "Микролаб" Capteur thermoélectrique de givrage

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