EP3834047A1 - Dispositif pour la regulation de la temperature dans une enceinte - Google Patents
Dispositif pour la regulation de la temperature dans une enceinteInfo
- Publication number
- EP3834047A1 EP3834047A1 EP19762318.4A EP19762318A EP3834047A1 EP 3834047 A1 EP3834047 A1 EP 3834047A1 EP 19762318 A EP19762318 A EP 19762318A EP 3834047 A1 EP3834047 A1 EP 3834047A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- chamber
- module
- transfer chamber
- housing
- 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.)
- Withdrawn
Links
- 238000009413 insulation Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000004378 air conditioning Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 5
- 230000005494 condensation Effects 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 abstract description 16
- 230000003019 stabilising effect Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 description 15
- 230000033228 biological regulation Effects 0.000 description 10
- 239000012472 biological sample Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 230000005678 Seebeck effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000005679 Peltier effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000368 destabilizing effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000005676 thermoelectric effect Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1919—Control of temperature characterised by the use of electric means characterised by the type of controller
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N1/00—Preservation of bodies of humans or animals, or parts thereof
- A01N1/02—Preservation of living parts
- A01N1/0236—Mechanical aspects
- A01N1/0242—Apparatuses, i.e. devices used in the process of preservation of living parts, such as pumps, refrigeration devices or any other devices featuring moving parts and/or temperature controlling components
- A01N1/0252—Temperature controlling refrigerating apparatus, i.e. devices used to actively control the temperature of a designated internal volume, e.g. refrigerators, freeze-drying apparatus or liquid nitrogen baths
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N1/00—Preservation of bodies of humans or animals, or parts thereof
- A01N1/02—Preservation of living parts
- A01N1/0236—Mechanical aspects
- A01N1/0263—Non-refrigerated containers specially adapted for transporting or storing living parts whilst preserving, e.g. cool boxes, blood bags or "straws" for cryopreservation
- A01N1/0273—Transport containers
Definitions
- the present invention relates to the field of temperature regulation by the use of at least one thermoelectric module.
- thermoelectric modules are well known in the art. These modules use the Peltier effect or its opposite effect, the Seebeck effect. Regarding the Peltier effect, a heat flux is generated between two junctions of electrical conductors of different materials when an electric current flows through the junctions. Conversely and with regard to the Seebeck effect, when the two junctions are subjected to a temperature difference, a current is generated.
- the thermoelectric modules used in most applications include a series of junctions between p and n type semiconductor materials, arranged between two parallel surfaces, so as to create a cold surface and a hot surface when the module is traversed by an electric current. Likewise, when a module is subjected to an outside temperature difference, it will function as an electric current generator.
- thermoelectric module The efficiency of a thermoelectric module largely depends on the difference DT between the temperatures of the two surfaces of the module, hereinafter called the module temperature differential.
- the modules are mainly used in applications for which the temperature must be regulated in a particularly precise and reliable manner, such as for example containers used for transporting organs to be transplanted, or for applications in which the vibrations generated by the systems conventional refrigeration is a major drawback that must be eliminated.
- all of these applications are limited to indoor environments, for example a building hospital or a transport vehicle, where the temperature of the environment does not substantially influence the temperature differential.
- thermoelectric which makes the thermoelectric solution inapplicable in a large number of fields. Examples include the temporary storage of biological samples, such as blood samples, in deposit boxes installed in several places, often in places likely to be subject to significant temperature variations over time.
- the present invention aims to provide a temperature control device by the use of known thermoelectric effects, but which does not suffer from the drawbacks described above.
- the basic characteristics of such a device are described in the appended claims.
- the invention relates to a device capable of being placed in communication with an enclosure, the device comprising a first part which includes a thermoelectric module, the module being configured to maintain the temperature inside the enclosure at a value setpoint, and in which the device comprises a stabilization part above the thermoelectric module comprising a motorized valve which operates as a function of the temperature differential created by the thermoelectric module and as a function of the temperature outside the device, so as to maintain a stable temperature differential, independently of said outside temperature.
- a third part of the device disposed above the stabilization part may comprise a heat sink and a second thermoelectric module configured to recover part of the thermal energy discharged from the enclosure in the case where the enclosure is refrigerated by compared to a higher temperature.
- the third part comprises an air collection chamber and the device is provided with a lateral channel which allows the passage of a direct air flow between the second chamber and the exterior of the device.
- the invention relates to a device for regulating the temperature in an essentially closed enclosure, said device comprising three parts:
- the first part comprising:
- thermoelectric module having a first face and a second face, the first module being configured to be supplied by an electric power source which is part of the device or which is outside the device,
- said second part disposed above the first part when the device is installed in the vertical operating position, said second part comprising a housing which comprises a second thermal transfer chamber in contact with the second face of the first thermoelectric module, the second chamber being separated by thermal insulation from the first heat transfer chamber,
- a third part disposed above the second part when the device is installed in the vertical operating position, said third part comprising a third chamber
- the second part also includes:
- a motorized valve configured to regulate the air convection between said second heat transfer chamber and the third chamber
- a second fan for forcing an air flow between said second chamber and said third chamber, when the valve is open, the valve and the second fan being connected to a control unit which regulates the operation of the valve and of the second fan according to the temperatures measured by the temperature sensors.
- the third chamber is a third heat transfer chamber
- the third part further comprises a heat sink disposed above said third heat transfer chamber in the vertical operating position of the device.
- the device described in the previous paragraph may further comprise one or more additional thermoelectric modules arranged between the third heat transfer chamber and the heat sink, the additional module or modules being configured to charge a (re) loadable source of power supply.
- the valve comprises a body, a jack, a seat fixed to or incorporated in the housing, and in which the valve body is a cylindrical element configured to be actuated in the vertical direction by the cylinder, when the device is installed in a vertical position, between an open position in which the valve allows the passage of an air flow between the second and third heat transfer chamber, and a closed position in which the body of the valve is in contact with the valve seat, so as to block the passage of an air flow between said second and third heat transfer chambers.
- valve body can be connected to one of the ends of a piston, the piston being configured to go up or down with respect to an orifice which is incorporated in the housing, the piston comprising at its second end a blocking element configured to limit the path of the valve body in the vertical direction, when the device is installed in the vertical position.
- the third heat transfer chamber is provided with depressurization vents.
- an upper part (in the vertical operating position of the device) of the third heat transfer chamber is formed by an element of material of high thermal conductivity, said element having the shape of a cup. which is open downwards, the bottom of the cup forming the ceiling of the third chamber, and in which the thickness of the bottom of the cup is less than the thickness of the side walls of the cup, and in which said bottom is in thermoconductive contact with the dissipator, or - if necessary - with the additional thermoelectric module (s).
- the third part includes an opening which allows air to enter from the outside of the device into the third chamber
- the valve comprises a body, a jack, a seat fixed to or incorporated in the housing, and the valve body is an element configured to be actuated by the jack, between an open position and a closed position,
- the housing includes a lateral channel connected to the outside of the device
- the valve is configured so that:
- the second heat transfer chamber is connected to the lateral channel, allowing the passage of an air flow from the second chamber to the lateral channel and from there to the outside of the device,
- the lateral channel is separated from the third chamber.
- valve can comprise a rod provided with seals at its two ends, and the rod and the housing can be configured so that:
- the first seal blocks a first air connection between the side channel and the third chamber
- the first seal blocks a second air connection between the second heat transfer chamber and the side channel
- the second seal blocks the first air connection between the side channel and the third chamber
- the second heat transfer chamber may include a dissipator mounted on the second face of the first thermoelectric module, the second fan being mounted on the dissipator.
- the second heat transfer chamber may further include a peripheral channel which is connected to the side channel when the valve is open.
- the first heat transfer chamber comprises a wall of conical shape or curved symmetrically, the top of said surface being oriented upwards (in the vertical operating position of the device), an orifice being provided in the middle of said conical or curved wall, the surface being connected to the side walls of said first chamber so that the conical or curved wall can collect water formed by condensation.
- the conical or curved wall can be formed from a thermal insulating material.
- the first part comprises a housing, in which the first thermoelectric module is provided with one or more thermal insulation joints between the housing and the first module.
- the device may include a cover which surrounds the housing of the second part and which is fixed to the housing of the first part, the cover also comprising in its interior at least a portion of the third chamber.
- the device according to the invention is provided with means for reversing the polarity of the supply of the first thermoelectric module.
- Figure 1 shows a device according to a first embodiment of the invention in 3D view.
- FIG. 2 represents several plan and section views of the device in FIG. 1.
- FIG 3 shows a view of the components of the housing which are part of the stabilization part of the device according to the first embodiment of the invention.
- Figure 4 is an illustration of the operation of the valve which is part of the stabilization part of a device according to the first embodiment of the invention.
- FIG. 5 shows a detail of the device shown in FIGS. 1 to 4.
- Figures 6a and 6b respectively show a 3D view and a side view of the exterior of the device according to a second embodiment.
- Figures 7a and 7b show sections along the plane AA shown in Figure 6b, in two different states of the device.
- Figure 8 shows an exploded view of the stabilizing part of the device according to the second embodiment.
- Figure 9 shows an exploded view of the motorized valve of the device according to the second embodiment.
- the device shown in the various figures is a device according to preferred but non-limiting embodiments of the invention, the invention being limited only by the appended claims.
- the device 1 as shown in Figure 1 is arranged on an enclosure 2 in which the temperature must be maintained.
- the operation of the device will first be described on the basis of a current situation, according to which the interior of the enclosure 2 is maintained at a temperature below the temperature outside the device.
- the temperature inside enclosure 2 may have to be maintained at a set point of 5 ° C, regardless of the outside temperature, which can vary between 10 ° and 30 ° over a 24 hour period.
- the device comprises three parts, arranged successively in the vertical direction, when the device is installed vertically, ie above the refrigerated enclosure 2 as it is the case in Figure 1. It should be noted that the position of operation of the device is not limited to this vertical installation. The device can also be mounted inclined or horizontally on an inclined or vertical wall of an enclosure for example. The detailed description will nevertheless be based on the case of the vertical installation illustrated in FIG. 1.
- a first part 3 called the thermoelectric part, and which comprises a thermoelectric module 4 as it is known in itself.
- a thermoelectric module 4 of the CPM-2F type is used, sold by the company CUI Inc.
- the module 4 When it is supplied by an electric current generated by a battery or by the network, the module 4 generates a temperature differential between the cold face A of the module and the hot face B of the module.
- a fan 5 will distribute the air cooled by the module 4 in the enclosure 2 through an opening provided in a wall of the enclosure 2.
- the module 4 is arranged in a housing 6 with thermal insulation seals 7 arranged between the module 4 and the material of the housing 6. Below the thermoelectric module 4, between the cold face A and the fan 5, is located a heat transfer chamber 8.
- the module 4 and the fan 5 are controlled by a first regulation loop which will activate the module and the fan to reach and maintain a set temperature in the enclosure 2.
- the module 4 and the fan 5 operate in mode on / off according to a measurement of the temperature of the enclosure 2 by a temperature sensor placed in the enclosure and / or according to a measurement of the face A of the module by a sensor 36 mounted on said face AT.
- the chamber 8 comprises a wall 9 of conical or symmetrically curved shape (for example parabolic) whose top is oriented upwards, and provided with a central orifice 10.
- the wall 9 is fixed to the side walls of the chamber 8 so as to be able to capture the condensation formed by the cooling effect, while allowing thermal transfer through the central orifice 10, when the module 4 is activated.
- the wall 9 is made of a thermally insulating material.
- said wall 9 and the face A of said module 4 thus form an anteroom which voluntarily limits the heat transfers between the anteroom and the chamber 8 via the orifice 10 whose surface is strictly less than that of face A of module 4. This makes it possible to reduce the influence of temperature variations of enclosure 2 on face A of module 4 and improves the stability of the temperature difference between face A and B of module 4 .
- Channels can be provided inside the housing 6 to allow the evacuation of the condensation by the force of gravity to a discharge nozzle 1 1.
- Other non-channels shown are intended to allow air circulation between the cooled enclosure and the heat transfer chamber 8.
- the channels for condensate discharge as well as the nozzle 1 1 are in fact optional, since the volume of the condensate is normally quite reduced, and the air circulation will wash away the condensate drops which are formed.
- a discharge space of for example about 0.5mm thick between the outer lateral faces of the thermoelectric module 4 and the walls of the cavity of the housing 6 in which the thermoelectric module is housed and the channel of the nozzle 11 is connected to the evacuation space.
- the whole of this internal channel is sealed up to the outlet of the nozzle 11 and forms a natural evacuation circuit of the condensation formed on the external lateral faces of the thermoelectric module 4.
- said evacuation space for example 0.5 mm thick, constitutes natural thermal insulation between the external lateral walls of the thermoelectric module 4 and the walls of the cavity of the housing 6 in which the thermoelectric module is housed. Said thermal insulation is produced by the thermal resistance of the layer of air present in said evacuation space.
- said evacuation space limits the contact surface between the external lateral walls of the thermoelectric module 4 and the walls of the cavity of the housing 6 to allow a single contact at the sealing points formed by the seals thermal insulation 7.
- the B of the thermoelectric module 4 must be evacuated to maintain the temperature differential at a stable level of around 30 ° C for example, regardless of the temperature outside the device.
- this evacuation is actively controlled using the second part of the device, called the stabilization part 15 and situated above the thermoelectric part 3, a thermal insulation joint 16 being disposed between the thermoelectric part 3 and the stabilization part 15.
- the stabilization part 15 comprises a housing 17 which first comprises a second thermal transfer chamber 18 whose lower face largely corresponds with the hot face B of the thermoelectric module 4.
- the chamber 18 is thermally insulated from the chamber 8.
- seals 7 and 16 are preferably also by the air space of for example 0.5 mm described above and by the use of a module 4 as shown in the figures, having a significant thickness between side A and side B.
- the fact of properly isolating the chambers 8 and 18 from one another will contribute to m important to the stability of DT.
- the chamber 18 includes a second fan 19 configured to accelerate the convection of hot air upwards.
- a motorized valve 20 controlled by an electric actuator 21 via a connecting rod 22.
- the components of the stabilization part 15 are shown in more detail in FIG. 3.
- the body 25 of the valve is an essentially cylindrical element which is displaceable in the vertical direction by the actuation of the jack 21 which will pull or push the connecting rod.
- a series of pins 14 is provided for assembling the actuator, the connecting rod and the body 25 of the valve.
- the seat 26 of the valve is formed by an annular space inside the housing 17. The seat can be machined in the housing or it can consist of a part fixed to the housing.
- the valve body is provided with openings 24 to allow air circulation between the space 42 above the valve (described later in more detail), and the heat transfer chamber 18 via a central channel 23 provided in the housing 17 above the second fan 19 and via the hole or holes 35 and the connection 30, when the valve is open (see later for more details).
- the body 25 of the valve is connected to the first end of a piston 27 guided by a cylindrical orifice 28, the piston comprising a blocking element 29 at its second end which limits the movement of the body of the valve 25 in a vertical direction. Element 29 is actually optional. When the control of the action of the jack 21 is sufficiently precise to allow precise positioning of the valve 20, the blocking element 29 can be removed.
- the two housings 6 and 17 are formed from a material having a low thermal conductivity, and preferably also having a low electrical conductivity. According to a preferred embodiment, these materials are thermoplastics with an amorphous and / or thermosetting structure thanks to their high mechanical strength in the face of concentrated temperatures and on the other hand thanks to their low thermal conductivity compared to thermally conductive materials such as l 'steel.
- Figure 4 shows the positions 'open valve' and 'closed valve' of the device.
- the valve 20 When the valve 20 is raised (open position) (FIG. 4a), still in the case where the set temperature is lower than the temperature outside the device, the hot air can move towards the top of the device, by one or more eccentric orifices 35 provided in the housing 17 of the stabilization part 15 and by the connection 30 between the body of the valve 25 and the seat of the valve 26.
- the closed position of the valve 20 see FIG. 4b
- the operation of the valve 20, preferably synchronized with the operation of the fan 19 is automatically adjusted on the basis of the direct measurement of the temperature differential by two temperature sensors 36 and 37 arranged respectively on the cold face A and the hot face B of the thermoelectric module 4.
- the valve 20 is controlled by a second regulation loop, which activates the opening of the valve when the DT measured by the sensors 36 and 37 exceeds a set value, for example 30 ° C.
- the second regulation loop can be a PI loop or any other loop known in the state of the art (P, I, PID, etc.).
- the regulation is preferably based on a range of values around the set value or a percentage of the set value.
- the valve opens and the fan 19 is activated, preferably at a fixed and predefined speed, thus creating a flow of hot air towards the top of the device, through the hole or holes 35 and through the connection 30 between the body of the valve 25 and the seat of the valve 26.
- Other operating modes could provide for a change in the speed of the fan 19 as a function of the difference between the measured DT and the setpoint for this DT.
- the valve 20 closes.
- the dissipation part is located inside a cover 41 which surrounds the housing 17 of the stabilization part 15 and which is fixed to the housing 6 of the thermoelectric part 3 by screws and / or systems clips.
- the dissipation part 40 comprises a third thermal transfer chamber 42 comprising a lower portion in direct communication with the eccentric orifices 35 and the cylindrical orifice 28 towards the second thermal transfer chamber 18, and an upper portion which forms the internal space of a part 43 called a heat concentrator which has the shape of a cup partially encapsulated by the material of the cover 41.
- the concentrator 43 is preferably made of a highly thermal conductive material such as copper.
- the concentrator 43 is open at the bottom and closed at the top. As shown in Figure 5, the ceiling of the third bedroom heat transfer 42 is formed by the bottom 75 of the cup of the concentrator. The thickness of the bottom 75 is less than the thickness of the side walls 76 of the concentrator. This structure results in a functionality of the concentrator which is advantageous in terms of the evacuation of heat from the chamber 42.
- the heat evacuated from the second chamber 18 when the valve 20 is open, must then be evacuated quickly to the outside to ensure the stability of the DT on the module 4.
- the concentrator 43 will stimulate this transfer of thermal energy by rapid heating of the bottom 75 of the concentrator.
- this bottom is in thermoconductive contact with a second thermoelectric module 45.
- the contact between these components is made even more thermoconductive by the application of a thermal paste between the upper face of the bottom 75 and the lower face of the module 45.
- the device further comprises a dissipator 46, comprising a base 80 and a row of strips 81 (see FIG. 5).
- This heatsink structure is known and it is not limiting. Other known heatsink structures can be used.
- the second module 45 can operate as an electric current generator by exploiting the Seebeck effect, thanks to the gradual increase in temperature in the chamber 42 and thanks to the temperature difference between the underside of the module 45 being in contact with the concentrator 43 and the upper face of said module 45 being in contact with the dissipator 46.
- the second module 45 is connected for example to a rechargeable battery (not shown) which contributes to the supply the first module 4 and / or other electrical components integrated into the device.
- a temperature sensor 47 is arranged on the underside of the second module 45.
- a second temperature sensor (not shown) is housed in the base 80 of the dissipator 46, so as to measure the temperature on the other side of module 45, iede so as to measure the DT on said module 45.
- a third regulation loop is provided to regulate the operation of module 45: when the DT exceeds a threshold, the module will be connected to a rechargeable battery.
- the dissipation part 40 does not include the second module 45, but it includes the dissipator 46. In in this case, there is a direct thermoconductive contact between the bottom 75 of the concentrator 43 and the base of the dissipator 46.
- the device does not include the concentrator 43, but the chamber 42 is completely surrounded laterally by the non-thermally conductive material of the cover 41.
- the heat transfer in this case is carried out entirely by air convection in the chamber 42 and by thermal conduction in the base 80 and the strips 81 (or equivalent) of the dissipator 46. It is clear that the evacuation of heat in this case will be less effective, but this defect could be compensated for by a suitable dimensioning of chamber 42 and / or of dissipator 46.
- the device is preferably provided with a number of vents 44 in the second heat transfer chamber 42. These are openings to the outside of the device, of reduced section which are provided in the side wall of the concentrator 43 in the embodiment shown in the figures.
- the presence of the vents 44 performs a depressurization of the chamber 42 when the pressure in this chamber reaches an excessive level, so as to maintain the pressure in this chamber at an acceptable level.
- pressure sensors are also provided: a first sensor can be mounted at the sensor 47 (or this sensor can be a temperature and pressure sensor).
- a second pressure sensor can be mounted between the fins of the dissipator 46.
- the device is provided with channels and / or openings for the passage of electrical cables 50 necessary to supply the various components of the device 1.
- the device 1 is also provided with a control unit, or alternatively, the device is connected to a control unit which is located outside the device, the unit being configured to acquire signals representing temperatures and - if applicable - pressures measured by the various sensors.
- the control unit also makes it possible to generate control signals according to the measured values.
- the different regulatory loops described above are therefore implemented through this control unit.
- the precise implementation in terms of electrical and electronic components of the control unit is not described in detail here since this realization falls within the skills of the skilled person in the field of air conditioning.
- said control unit is provided with radio frequency type communication means (example: RFID), for example for the identification and access management of biological samples stored in the pregnant 2.
- RFID radio frequency type communication means
- Said control unit can also be provided with a telecommunication module, preferably wireless (example: 3G / 4G / 5G) to allow the connection and transmission of information relating to the regulation of temperatures, to the states of operation of the device 1 and of said control unit, to at least one user interface and to at least one data computer server via a cloud computing system.
- a telecommunication module preferably wireless (example: 3G / 4G / 5G) to allow the connection and transmission of information relating to the regulation of temperatures, to the states of operation of the device 1 and of said control unit, to at least one user interface and to at least one data computer server via a cloud computing system.
- thermoelectric module 45 instead of providing a single thermoelectric module 45 in the dissipation part 40 of the device, several modules 45 can be provided, for example positioned in a single plane.
- a concentrator 43 can be envisaged with the bottom 75 projecting from the periphery of the side walls 76. The bottom thus becomes a platform on which several (rows of) modules 45 are mounted.
- the multiplication of modules 45 increases the capacity of the device to recover thermal energy in the form of electric current.
- FIG. 6 A second embodiment of a device according to the invention is shown in Figures 6 to 9.
- the operation of the device is again described for the use case where the device cools an enclosure on which it is mounted in vertical position. Again, it should be noted that other orientations of the device are possible and that the invention is not limited to vertical installation.
- the thermoelectric module 4 having a cold face A and a hot face B.
- the first part 3 part thermoelectric
- the stabilization part 15 is again arranged above the first part 3.
- This stabilization part 15 comprises the housing 17, the second heat transfer chamber 18, isolated from the first chamber 8 by seals 16 and the central channel 23 above the second fan 19, as well as the valve motorized 20.
- Figures 7a and 7c respectively represent the states 'valve open' and 'valve closed'.
- a lamellar dissipator 51 is mounted in the second chamber 18.
- the dissipator 51 is in thermal contact with the hot face B of the module 4.
- the second fan 19 is mounted on the dissipator 51.
- the chamber 18 further comprises a peripheral channel 52 disposed around the fan 19.
- the peripheral channel 52 is connectable to a lateral channel 53 (described in more detail later) provided in the housing 17, and connected by a nozzle 54 outside the device.
- the third part 40 of the device comprises the third chamber 42.
- the part 40 is produced by a cover 41 which surrounds the housing 17 of the stabilization part 15 and which is fixed on the housing 6 of the thermoelectric part 3 by screws and / or clip systems.
- the device shown in Figures 6 and 7 does not include a heat sink above the third chamber 42, nor a thermoelectric module to recover energy.
- An opening 55 which allows the entry of air from the outside into the device is provided above the third chamber 42.
- This chamber 42 is in this case rather an air collection chamber than a transfer chamber thermal.
- the heat transfer takes place entirely in the chambers 8 and 18, and the evacuation of the heat is separated from the third part 40.
- the motorized valve 20 is designed in a slightly different manner compared to the first form d 'execution.
- An exploded view of the stabilization part 15 according to this second form is shown in FIG. 8, and an exploded view of the valve itself is shown in FIG. 9.
- the valve 20 always comprises a body 25 provided with openings 24 to allow the circulation of air actuated by the second fan 19.
- the movement of the body 25 of the valve is actuated as in the other embodiment, by a jack 21 and a connecting rod 22.
- a jack 21 and a connecting rod 22 we also see the seat 26 of the valve, and the portion 27 which moves like a piston in the cylindrical hole 28 provided in the housing 17.
- the piston 27 is not provided with a blocking element, the positioning of the valve being adjusted entirely by the jack 21.
- a seal 65 will block the air flow from the third chamber 42 to the second chamber 18 when the valve is closed (fig. 7b).
- the valve body 25 further comprises an eccentric part which supports a rod 56 integrated in the valve body.
- the rod 56 is fixed to the body 25 of the valve by a screw connection 57.
- the rod 56 is provided with seals 58 and 59 at its two ends.
- the first seal 58 attached to the lower end of the rod is a double action seal.
- the upper face of the seal 58 is configured to block the connection 60 between the lateral channel 53 and the third chamber 42, when the valve 20 is open (fig. 7a).
- the underside of the second seal 59 will block this same connection 60, while the underside of the seal 58 blocks the connection 61 between the chamber 18 and the lateral channel 53.
- the housing 6 is provided with a peripheral channel 62 connected to the first chamber 8, which allows the circulation of air actuated by the first fan 5.
- the air is circulated in the direction indicated by the arrows, but the opposite direction is also possible.
- the wall 9 is still present, but this wall is now integral with the housing 6, and the orifice 10 is wider. In this embodiment, the wall 9 does not have the function of creating an anteroom.
- the electric cables 63 for supplying the module 4, the fans 5 and 19 and the temperature sensors 36 and 37 are guided in openings 64 integrated in the housing 6 and in the cover 41.
- the temperature regulation in an enclosure by the device is carried out in the same way as for the first embodiment, by a control unit which can be integrated into the device.
- the control unit 64 is visible in FIG. 6a.
- cooling mode the cold air created in contact with the face A of the thermoelectric module 4 is transported into the enclosure by the fan 5. Meanwhile the temperature of the hot face B increases, as well as the temperature in the chamber 18 which is then separated from the chamber 42 and the lateral channel 53 by the closed valve 20 (FIG. 7b).
- the valve 20 opens and the second fan 19 is activated.
- the opening of the valve means that the valve instantly passes to the state shown in FIG.
- the device of Figures 6 to 9 can also operate without the presence of a sink 51, although the transfer of heat is less efficient.
- the rod 56 is only an example of a mechanism which performs the function of configuring the valve such as:
- the second heat transfer chamber 18 is connected to the lateral channel 53, allowing an air flow from the second chamber 18 to the lateral channel 53 and from there towards the outside of the device,
- the lateral channel 53 is separated from the third chamber 42.
- the device of the invention does not only work in the refrigeration regime but it can also heat the enclosure 2 to maintain the set temperature in the enclosure when the outside temperature drops below a certain level. level.
- the device is configured to reverse the polarity of the power supply of module 4, when necessary. For example, we can have a scenario in which the outside temperature gradually drops from a level of 35 ° C to a level of -10 ° C in 2 or 3 hours while the temperature in enclosure 2 must be maintained at + 5 ° C.
- the temperature in the chamber 18 will be maintained at approximately 35 ° C, to ensure a DT of approximately 30 ° C on the module 4.
- this maintenance at 35 ° C in the chamber 18 will be provided by regulation of the valve 20 and of the fan 19 as described above.
- the temperature outside the device has become so low that the temperature in the chamber 18 begins to decrease, with the result that the temperature in the enclosure 2 drops below the set value.
- this temperature (detected for example via sensor 36) drops below a predefined value (eg below a range around the set value)
- the polarity of module 4 will be reversed and module 4 will start to heat the enclosure.
- a DT on module 4 can again be maintained in the heating mode, by the action of valve 20.
- U use of a device according to the invention extends to all technical fields which require the air conditioning of an enclosure 2.
- the device can be used in a box for storing biological samples in which a user deposits the samples, which are then collected from the box at a later time.
- the device makes it possible to cool an enclosure inside the box in which the samples are stored and to maintain the samples at a set temperature.
- the device can also be used in more general air conditioning applications, for example as an alternative to a compressor in a conventional refrigerator.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE20185424A BE1026401B1 (fr) | 2018-06-20 | 2018-06-20 | Dispositif pour la regulation de la temperature dans une enceinte |
PCT/EP2019/066332 WO2019243490A1 (fr) | 2018-06-20 | 2019-06-20 | Dispositif pour la regulation de la temperature dans une enceinte |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3834047A1 true EP3834047A1 (fr) | 2021-06-16 |
Family
ID=62985845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19762318.4A Withdrawn EP3834047A1 (fr) | 2018-06-20 | 2019-06-20 | Dispositif pour la regulation de la temperature dans une enceinte |
Country Status (4)
Country | Link |
---|---|
US (1) | US20210254868A1 (fr) |
EP (1) | EP3834047A1 (fr) |
BE (1) | BE1026401B1 (fr) |
WO (1) | WO2019243490A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111011356B (zh) * | 2020-01-16 | 2024-06-04 | 魏子坤 | 一种便于在门窗开放通风环境中长时间使用的电蚊香 |
CN116367519B (zh) * | 2023-05-31 | 2023-08-22 | 武汉能钠智能装备技术股份有限公司 | 一种低气压下设备热负载自适应均衡系统 |
CN118020761B (zh) * | 2024-04-09 | 2024-07-12 | 皖南医学院 | 一种可分类保存活检组织的转运方法及转运箱 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4450987A (en) * | 1979-10-25 | 1984-05-29 | D.O.V.E. Equipment Corporation | Portion control liquid dispenser |
US4998413A (en) * | 1988-09-01 | 1991-03-12 | Nippondenso Co., Ltd. | Refrigerant recovery system |
KR910009003B1 (ko) * | 1989-05-29 | 1991-10-26 | 삼성전자 주식회사 | 음식물의 저장장치 |
GB2331838A (en) * | 1997-11-24 | 1999-06-02 | Coolbox | Portable,thermoelectric,temperature controlled receptacles. |
US6003318A (en) * | 1998-04-28 | 1999-12-21 | Oasis Corporation | Thermoelectric water cooler |
US6308518B1 (en) * | 1999-09-28 | 2001-10-30 | Rick C. Hunter | Thermal barrier enclosure system |
US7451603B2 (en) * | 2004-03-22 | 2008-11-18 | General Mills, Inc. | Portable cooled merchandizing unit |
US7585663B2 (en) * | 2004-08-26 | 2009-09-08 | Applied Biosystems, Llc | Thermal device, system, and method, for fluid processing device |
CN101965490B (zh) * | 2008-03-05 | 2013-09-11 | 史泰克公司 | 用于流体的开关热电冷却的方法和设备 |
US8839631B2 (en) * | 2011-06-07 | 2014-09-23 | B/E Aerospace, Inc. | Thermoelectric cooling system for a food and beverage compartment |
WO2013114428A1 (fr) * | 2012-01-31 | 2013-08-08 | トヨタ自動車株式会社 | Générateur thermoélectrique |
TWI587114B (zh) * | 2016-02-05 | 2017-06-11 | 致茂電子股份有限公司 | 雙迴路溫度控制模組及具備該模組之電子元件測試設備 |
DE102018124662A1 (de) * | 2018-10-05 | 2020-04-09 | Vermes Microdispensing GmbH | Dosiersystem mit Kühleinrichtung |
-
2018
- 2018-06-20 BE BE20185424A patent/BE1026401B1/fr active IP Right Grant
-
2019
- 2019-06-20 US US17/253,967 patent/US20210254868A1/en not_active Abandoned
- 2019-06-20 EP EP19762318.4A patent/EP3834047A1/fr not_active Withdrawn
- 2019-06-20 WO PCT/EP2019/066332 patent/WO2019243490A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
BE1026401B1 (fr) | 2020-01-30 |
WO2019243490A1 (fr) | 2019-12-26 |
US20210254868A1 (en) | 2021-08-19 |
BE1026401A1 (fr) | 2020-01-22 |
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