EP4066593A1 - Radiateur electrique avec dispositif de mesure de temperature - Google Patents
Radiateur electrique avec dispositif de mesure de temperatureInfo
- Publication number
- EP4066593A1 EP4066593A1 EP20816292.5A EP20816292A EP4066593A1 EP 4066593 A1 EP4066593 A1 EP 4066593A1 EP 20816292 A EP20816292 A EP 20816292A EP 4066593 A1 EP4066593 A1 EP 4066593A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heating
- housing
- temperature
- radiator
- heating body
- 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- Withdrawn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
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
- H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating devices
- B60H1/22—Heating, cooling or ventilating devices the heat source being other than the propulsion plant
- B60H1/2215—Heating, cooling or ventilating devices the heat source being other than the propulsion plant the heat being derived from electric heaters
- B60H1/2225—Heating, cooling or ventilating devices the heat source being other than the propulsion plant the heat being derived from electric heaters arrangements of electric heaters for heating air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating devices
- B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
- B60H1/00514—Details of air conditioning housings
- B60H1/00521—Mounting or fastening of components in housings, e.g. heat exchangers, fans, electronic regulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
- F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
- F24H3/0429—For vehicles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
- F24H9/1863—Arrangement or mounting of electric heating means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating devices
- B60H1/22—Heating, cooling or ventilating devices the heat source being other than the propulsion plant
- B60H2001/2246—Heating, cooling or ventilating devices the heat source being other than the propulsion plant obtaining information from a variable, e.g. by means of a sensor
- B60H2001/2256—Heating, cooling or ventilating devices the heat source being other than the propulsion plant obtaining information from a variable, e.g. by means of a sensor related to the operation of the heater itself, e.g. flame detection or overheating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating devices
- B60H1/22—Heating, cooling or ventilating devices the heat source being other than the propulsion plant
- B60H2001/2268—Constructional features
- B60H2001/2287—Integration into a vehicle HVAC system or vehicle dashboard
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/04—Sensors
- F24D2220/042—Temperature sensors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/022—Heaters specially adapted for heating gaseous material
- H05B2203/023—Heaters of the type used for electrically heating the air blown in a vehicle compartment by the vehicle heating system
Definitions
- the present invention relates to the field of ventilation, heating and / or air conditioning of motor vehicles and relates more particularly to an electric radiator of a ventilation, heating and / or air conditioning system of a vehicle.
- An electric heater can for example be arranged across the path of an air flow, in order to heat said air flow.
- a radiator comprises a heating body in which the heating elements are arranged, for example by being housed in a frame forming a support, these heating elements being configured to be in contact with the air, if necessary by means of radiant elements increasing the exchange surface between the hot surface and the passing air, so as to promote an exchange of calories between the air and the heating elements.
- these heating elements may include stones or ceramics with a PTC effect, that is to say with a positive temperature coefficient.
- the current supply to these resistive elements generates heating of the heating element and possible transmission of calories to a flow of air brought into contact with this heating element.
- temperature sensors In order to control the heating emanating from such a radiator, it is known practice to arrange temperature sensors on the path of the air flow at the outlet of the radiator.
- the temperature sensors make it possible, for example, to control the temperature of the air flow subsequently distributed in the passenger compartment and / or to detect the exceeding of a temperature threshold liable to damage certain temperature-sensitive elements of the heating system. Ventilation, heating and / or air conditioning, so as to regulate the operation of the radiator accordingly.
- the installation of the temperature sensor generates several problems.
- the temperature sensor it is in particular desirable to place the temperature sensor at a distance from the radiator so as not to carry out false measurements of the temperature, and in particular measurements that are more representative of the temperature of the heating element than of the temperature of the air flow that has passed through the radiator, and the installation of the temperature sensor is therefore complicated, since it is necessary to ensure that the position of this sensor conforms to the desired theoretical position.
- electrical connection it is known to connect the temperature sensor to a control unit of the ventilation, heating and / or air conditioning system which is configured to send operating instructions to the radiator if necessary. , but this implies, on the one hand, a step of connection between the sensor and the control unit and, on the other hand, an information processing time impacted by the involvement of the control unit.
- an electric radiator for a ventilation, heating and / or air conditioning system of a vehicle comprising a heating body, an electrical connection interface, and at least one measuring device.
- temperature arranged across an air flow capable of passing through the heating body and comprising at least one temperature sensor and a support body for said temperature sensor extending in a transverse direction at a distance from the heating body, characterized in that the temperature measuring device is electrically connected to the electrical connection interface of the radiator by means of a connection cable which extends from a transverse end of the support body of the temperature sensor.
- the heating body of the radiator may for example have a generally rectangular shape defined by a frame provided with heating elements generating heat, as well as radiant elements ensuring the diffusion of the hot air flow leaving the radiator.
- the heating elements and the radiant elements form the heating body and can be maintained by a frame surrounding them and by a grid integral with this frame and arranged across the air flow.
- One end of the heating body is linked to the electrical connection interface. The latter makes it possible, among other things, to supply the heating elements with electrical energy causing them to heat up.
- the temperature measuring device is advantageously arranged opposite a face of the heating body of the radiator, more precisely the face from which the hot air flow emanates after it has passed through the heating body, or from there. other words the exit face of the heating body.
- the temperature measuring device therefore measures the temperature of the air flow leaving the radiator heating body.
- the temperature measuring device comprises one or more temperature sensors arranged on a temperature sensor support body, sized and configured to allow the temperature sensor (s) to be maintained in the air flow and at the desired distance from the body. of heating.
- the temperature sensor can for example be an NTC type sensor, in particular chosen for the sensitivity to temperature variations.
- the temperature sensor support body is a structure of heat-resistant material housing the temperature sensor.
- the support body extends mainly in a direction of transverse elongation and the connection cable extends from a transverse end of the support body, that is to say in the extension of the support body at the level of. one of its transverse ends.
- Such an arrangement of the connection cable makes it possible to guarantee ease of installation of the electric heater in an associated ventilation, heating and / or air conditioning system, with the support body and the temperature sensors facing the heating body. , while facilitating the tightness of the assembly once the electric heater is installed.
- connection cable extends to the electrical connection interface of the radiator.
- the connection between the connection cable and the electrical connection interface is made for example by plugging said connection cable into a connector of the electrical connection interface.
- connection cable in the extension of a transverse end of the support body allows the temperature measuring device to be mounted at a distance from the heating body, by circulating the connection cable away from the body. heating, and in particular from the outside of a housing of the ventilation, heating and / or air conditioning system as will be described below.
- the at least one temperature sensor comprises a sensor head housed in the support body and connection wires which connect the sensor head to the connection cable, extending in particular along gutters formed in the support body.
- the lead wires extend within the structure of the temperature sensor support body so that they can be connected to the temperature sensor.
- the connection wires are brought together, at the level of the transverse end of the support body previously mentioned, to form the connection cable and they participate in holding, by being stretched in the gutters, the sensor head in position across the flow. air.
- the temperature measuring device comprises a plurality of temperature sensors, the connection wires specific to each temperature sensor being grouped together to form the connection cable at said transverse end of the support body. . It may be advisable to have several temperature sensors along the support body in order to take the temperature of the air flow in several places. It is indeed possible that the temperature measured in the air flow varies depending on the position of the temperature sensors.
- the electrical connection interface after receiving the measurements temperature, can for example establish an average of the temperatures recorded and act or not accordingly, rather than being based only on a single temperature measurement taken by a single temperature sensor.
- the support body of the temperature sensor has a plurality of openings, formed between two transverse bars and uprights interconnecting the transverse bars, said openings allowing the housing of the sensor head of the 'at least one temperature sensor and / or the passage of the air flow passing through the heating body of the radiator.
- the openings pass right through the support body, at the faces perpendicular to the air flow emanating from the radiator heating body.
- the air flow is able to pass through the support body by passing through the openings.
- the presence of openings makes it possible over the entire transverse dimension of the support body not to penalize the circulation of air flow and to limit the pressure drops in the flow, while reducing the weight of the support body and therefore of the radiator electric as a whole.
- At least one of the openings is provided with a temperature sensor head, for example retained by the connection wires to which the temperature sensor is connected.
- the air flow also passes through the opening provided with the temperature sensor which can then measure the temperature of the air flow.
- the gutters housing the connection wires are formed respectively in one of the transverse bars on either side of the openings.
- the support body is formed by the cooperation of a base and a cover which are fitted against each other to form said gutters.
- connection cable is electrically connected to a low voltage connector of the electrical connection interface, said connector being arranged on an external face of a cover of the electrical connection interface.
- the electrical connection interface is divided into a high voltage portion and a low voltage portion.
- the high voltage portion is suitable for providing an electrical power supply up to for example 400V, this high voltage portion being intended to allow the electrical supply of the heating elements of the heating body of the radiator which may require a high supply of energy to s' heat to high temperatures.
- a supply voltage of the order of 400 V or more is, on the other hand, too high, or unsuitable for connecting other electrical or electronic components such as the temperature sensor (s), which may for example be damaged if connected to the high voltage portion.
- the electrical connection interface is also provided with the low voltage portion, allowing a supply voltage for example of the order of 12 V, in order to be able to supply the temperature sensor without overloading it.
- the electrical connection interface which makes it particularly suitable for the electric heater to be mounted in a housing of a ventilation, heating and / or air conditioning system with a connection cable extending outside this housing.
- the invention also covers a ventilation, heating and / or air conditioning system of a vehicle, comprising a housing and an electric heater as previously mentioned and capable of being housed in said housing, in which the box is provided with 'at least one air circulation duct through which the heating body of the electric radiator is arranged, said housing having on the one hand on a first wall an opening for inserting the heating body into a housing, and of on the other hand a notch formed distinctly from the opening defining the housing and dimensioned to receive the temperature measuring device.
- the housing has at least one air inlet and a plurality of air outlets.
- the at least one air circulation duct is arranged within the housing and has the function of distributing the air flow coming from the air inlet to each of the air outlets, the latter each opening onto an area of the passenger compartment of the vehicle.
- the electric heater is arranged across one of the air circulation ducts. The air flow passing through the latter is therefore likely to be heated by the heating body of the radiator.
- the air circulation duct comprising the radiator therefore makes it possible to distribute a flow of hot air towards the passenger compartment of the vehicle.
- the box also includes flaps making it possible to direct the air flow towards one or the other of the air circulation ducts, and this according to the need determined by a command executed by any occupant of the passenger compartment of the vehicle. vehicle.
- the housing of the housing therefore makes it possible to place the radiator heating body across the air circulation duct.
- the housing has dimensions substantially greater than the dimensions of the heating body of the radiator so that the latter can be inserted by rectilinear translation within the housing.
- the radiator is then held by any fixing means, for example by screwing or by clipping.
- the housing also includes at least one notch formed in one of its walls, distinct from the opening helping to define access to the housing of the heating body.
- the notch is substantially larger than a section of the temperature sensor support body so that the temperature sensor can be inserted into the housing within the notch.
- the support body extends in a main direction of transverse elongation, across the air circulation duct and parallel to the main elongation plane of the heating body.
- a compartmentalization wall of the housing is arranged facing the outlet face of the heating body, substantially perpendicular to the latter, and the compartmentalization wall comprises an additional notch configured to allow passage for the heating body. support.
- the housing comprises at least two notches aligned transversely and configured to be traversed by the support body, in order to limit a degree of freedom of the support body once it has been inserted through the notches, and in particular to avoid the bending of its transverse end present in the housing.
- the support body is held in its position through the notches by a fastening means integral with the housing, for example at the transverse end of the support body present in the housing.
- the air flow passing through the circulation duct then first passes through the heating body of the radiator and leaves it at a relatively high temperature, then passes through the temperature measuring device, and this through the openings. of the support body.
- the temperature sensor located within one of the openings of the support body, is also in contact with the air flow and then measures the temperature thereof.
- connection cable extends, from the transverse end of the support body to the electrical connection interface, outside the housing.
- the mounting of the radiator is thus facilitated in that it can be carried out either with the temperature measuring device connected to the electrical connection interface or not. It is indeed possible to envisage placing the heating body in the housing, then independently the temperature measuring device with the support body inserted into the housing through the notch, before connecting the connection cable attached to the support body on the cover of the electrical connection interface. It will be understood that this is in particular useful and particularly advantageous for changing the temperature sensors in the event of failure, or for a maintenance operation.
- the temperature measuring device can be removed as a whole without removing the heating body from its housing, which avoids having to reinsert this heating body on the one hand afterwards and on the other hand.
- the notch is formed in a second wall substantially perpendicular to the first wall in which the opening for inserting the heating body into the housing is formed.
- Such a configuration makes it possible in particular to provide a transverse arrangement of the temperature measuring device which is substantially perpendicular to the direction of insertion of the heating body in the housing and substantially perpendicular to the direction of elongation of the heating elements in the heating body. . It is therefore advantageous for the temperature measuring device to extend opposite each of the heating elements of the heating body, in order to be able to detect a temperature representative of the actual temperature of the air flow leaving the heating body.
- the temperature measuring device is arranged between the heating body of the radiator and a thermosensitive element housed in the housing of the system.
- the thermosensitive element is subjected to the heat of the air flow emanating from the heating element of the radiator and going towards the air outlets.
- the heat-sensitive element can be a shutter, as mentioned above, which allows the path of the air flow within the housing to be determined. If the air flow from the radiator heater body is too high, it could damage the heat-sensitive element.
- the temperature measuring device is arranged between the heater of the radiator and the thermosensitive element. Thus, the temperature of the air flow is controlled by the temperature measuring device before it comes into contact with the heat-sensitive element.
- the information is transmitted directly to the electrical connection interface of the radiator through the connection cable, thus reducing the power of the heating elements so that the air flow emanates from the radiator heating body at a lower temperature.
- the heat-sensitive element is thus preserved from extreme temperatures that may be generated by the radiator.
- the temperature measuring device is located at a distance of at least 20 mm from the heating body of the radiator.
- the temperature measuring device is therefore placed as close as possible to the thermosensitive element, the objective being to preserve the latter from extreme temperatures. In order to obtain relevant measurements, it was estimated that the temperature measuring device should be placed at least 20 mm from the radiator heating body.
- FIG. 1 is a general view of an electric heater according to the invention, making visible in particular a heating body and a temperature measuring device arranged at a distance from this heating body
- FIG. 1 is a partial view of the temperature measuring device of figure 1,
- FIG 3 is a top view of the electric heater of Figure 1, showing in particular a connection between an electrical connection interface of the electric heater and a connection cable of the temperature measuring device,
- FIG. 4 is a front view of a housing of a ventilation, heating and / or air conditioning system of a vehicle capable of being equipped with an electric heater, here not shown,
- FIG. 5 is a perspective view of the box of figure 4, this time equipped with an electric heater in accordance with figure 1, making visible in particular the arrangement of the connection cable outside the box,
- FIG 6 is a sectional view of the ventilation, heating and / or air conditioning system comprising the electric heater.
- the illustrated trihedron L, V, T arbitrarily defines an orientation of the radiator according to the invention in which the vertical direction V corresponds to an axis along which the main dimension of the radiator extends, the longitudinal direction L corresponds to a axis parallel to the main direction of the air flow emanating from the radiator, and the transverse direction T corresponds to an axis perpendicular to the vertical direction V and the longitudinal direction L, this transverse direction T possibly corresponding to the direction of elongation main of the temperature measuring device forming part of the invention as will be described in more detail below. It should be noted that such an arbitrary orientation is independent of the orientation of the radiator in the vehicle.
- FIG. 1 represents an electric radiator 1 according to the invention, configured to be arranged in a housing of a ventilation, heating and / or air conditioning system and to be traversed by an air flow 6 circulating in this housing according to a direction substantially parallel to the longitudinal axis L.
- the radiator t comprises a heating body 2 and an electrical connection interface 3 on which the heating body is fixed.
- the heating body 2 here delimited by a frame 21 has a generally rectangular shape extending mainly in an elongation plane defined by a vertical axis V, corresponding to the largest dimension of the heating body, and a transverse axis T , the electrical connection interface 3 being arranged at one end, along the vertical axis V, of the heating body.
- the heating body is configured, here by the size of the frame 21, to house heating elements 22 and radiant elements 23 each extending mainly along the vertical axis V.
- the heating elements 22 here consist of resistive elements capable of being heated by means of an electrical energy input supplied by the electrical connection interface 3.
- the air flow 6, passing through the heating body 2 of the radiator, recovers the calories emitted by the heating elements 22, leading to an increase in temperature of the air flow 6 at the outlet of the heating body 2.
- the radiant elements 23 may for example be in the form of fins or else of a corrugated sheet and have the function of increasing the heating surface in contact with the air flow.
- the faces of the frame 21 through which the air flow 6 passes are closed by a grid 24 ensuring the maintenance, within the heating body, of the heating elements 22 and of the radiant elements 23. It is advisable to note that this embodiment is only a non-limiting example of the invention, and that the resistive and radiant elements could form a heating body within the meaning of the invention without a frame or grid.
- the heating body 2 is connected to the electrical connection interface 3. More particularly, the frame 21 can be snapped onto a housing forming the base of the electrical connection interface, and each heating element, by means of a connection connector made integral with an electrode of this heating element, can be plugged into a connector arranged inside the electrical connection interface.
- the electrical connection interface 3, and in particular an on-board control module in this interface thus makes it possible to supply the heating elements 22 of the heating body 2 with electrical energy, if necessary by varying the power supply to the heating elements 22. to control the quantity of calories to be transferred to the air flow passing through the heating body.
- the electric heater 1 comprises according to a temperature measuring device 4 arranged at the outlet of the heating body 2 to control the temperature of the air flow 6 which has been in contact with the radiating elements 23 heated by the heating elements 22 and to be able to prevent overheating. of the electric heater.
- the temperature measuring device 4 comprises at least one temperature sensor 41, which has the function of measuring the temperature of the air flow 6 leaving the heating body 2, and a support body 42 which extends mainly along the line. 'transverse axis T and within which is arranged at least one temperature sensor 41.
- the support body is configured to hold the temperature sensor 41 in position and to fix this position with respect to the heating body 2 and to the air flow 6, and to be traversed by the air flow so as not to interfere with the flow of air. air flow in the heating, ventilation and air conditioning installation box.
- the support body 42 comprises for this purpose one or more openings 43 which each allow the passage of the air flow 6, at least one temperature sensor 41 being arranged at one of these openings 43.
- the body support 42 can for example be formed of a heat-resistant material so as not to be damaged by the heat of the air flow 6, whether this is the portion of the air flow brought through the support body through the openings 43, or the portion of the air flow caused to lick the support body 42.
- connection cable 5 is arranged in the extension of a transverse end 420 of the support body 42 of the temperature measuring device 4.
- the connection cable 5 makes it possible to supply each temperature sensor 41 electrically and / or to transmit to the electrical connection interface the temperature measurements carried out by each of the temperature sensors, the electrical connection interface being configured to modulate the control and / or the electrical supply of the heating elements 22 of the heating body 2 according to the measurements temperature received.
- connection cable 5 A free end of the connection cable 5, that is to say the end opposite to the support body 42, is provided with an electrical connection plug 52 configured to be able to be plugged into the electrical connection interface 3. More particularly, it is notable that the connection cable 5 is arranged between the temperature sensor 41 and a low voltage connector 31 of the electrical connection interface 3, while the heating elements are connected to a high voltage power supply present in this. same electrical connection interface. We can thus define, as illustrated in Figure 3, a high voltage portion 32 and a low voltage portion 33 in the electrical connection interface 3
- FIG 2 partially shows the temperature measuring device 4.
- the heating body does not appear in the background of Figure 2, but the air flow 6 is still shown.
- the temperature measuring device 4 comprises at least one temperature sensor 41, here two temperature sensors making it possible to measure the temperature of the air flow 6 at the level of two different zones of the heating body.
- the fact of providing a plurality of temperature sensors 41 regularly distributed along the support body 42 makes it possible to provide a more significant temperature of the air flow 6, for example by calculating an average of the temperatures recorded.
- the openings 43 of the support body are shown here with a generally rectangular shape, the dimensions of which are variable. One thus distinguishes the first openings of smaller dimensions than the dimensions of second openings, the first openings having the function of accommodating and maintaining the temperature sensors 41 while the second openings, of larger dimension, have the sole function of lightening. the support and to allow free circulation of the air flow 6 through the support body 42 without creating a pressure drop in the air flow to circulate in the heating, ventilation and air conditioning installation.
- a transverse end of the support body 42 is intentionally truncated in order to be able to observe the internal structure of the support body 42.
- the support body 42 here comprises a base 421 and a cover 422 which are fitted against one another to form a hollow body.
- the support body has two transverse bars 424 interconnected by vertical uprights 426, the spacing between two neighboring vertical uprights and between the two transverse bars making it possible to size the openings 43 described above.
- Each transverse bar 424 thus defines within it, by the hollow body formed by the cooperation of the base 421 and the cover 422, a gutter 44, which in this way is disposed at a portion of the support body 42 without openings 43
- the temperature sensors 41 each comprise a sensor head 50, housed in the center of one of the openings 43, and a set of connection wires 51 making it possible to electrically connect the sensors and to transmit the measurements taken by these sensors.
- the sets of connection wires 51 are shown in dotted lines in FIG. 2 and it is notable that these sets of connection wires extend mainly along a transverse axis T along each gutter 44.
- Each temperature sensor 41 is thus maintained. in position in its opening 43 by tensioning the sets of connection wires arranged in the gutters arranged on either side of this opening.
- the sons of connection 51 are assembled at the level of the transverse end 420 of the support body 42 to be grouped together in a sheath forming the connection cable 5.
- the installation of the temperature sensors 41 and the connection wires 51 is carried out in the base of the support body and the cover is subsequently added to trap the connection wires and thereby fix the position of the temperature sensors.
- FIG. 3 makes the electrical connection interface 3 and the support body 42 of the temperature measuring device particularly visible.
- the connection interface 3 is divided between a high voltage portion 32 and a low voltage portion 33.
- the high voltage portion 32 is suitable for supplying the heating elements with a voltage of the order for example of 400 V.
- a mains connector 320 is provided for this purpose in a return portion 30 of the electrical connection interface which s' Extends away from an area in front of the heating elements.
- the separation between the high voltage portion 32 and the low voltage portion 33 is shown in dotted lines.
- the high voltage portion 32 is arranged mainly opposite the heating body of the radiator, and therefore the heating elements, and the low voltage portion is mainly disposed in the return portion 30 mentioned above.
- the low voltage portion 33 of the electrical connection interface 3 is configured to allow power to electrical components, other than the heating elements and capable of operating at low voltage. As illustrated, in this low voltage portion 33 we find in particular the low voltage connector 31 mentioned above and configured to receive the electrical connection plug 52 of the connection cable 5 in order to guarantee the connection between the temperature measuring device 4 and the electrical connection interface 3.
- a mains connector 330 emerges from the low voltage portion 33 to allow for example the connection to an electric generator and the supply of this low voltage portion at a current with a voltage of the order of 12V.
- the low voltage connector 31, configured to receive the electrical connection plug 52 of the connection cable 5, is arranged through a cover 300 of the electrical connection interface 3, and the electrical connection plug 52 is plugged into the connector facing an external face of this cover, opposite to the electrical components housed in the connection interface, that is to say in other words, from outside the electrical connection interface.
- the connection cable 5 extends outside the heating body and the electrical connection interface.
- connection interface 3 also comprises a plurality of fixing holes 34 ensuring the fixing of the radiator, for example by screwing, as will be shown below.
- a ventilation, heating and / or air conditioning system 7 capable of emitting a flow of air at variable temperature according to the need of the vehicle or of its occupants, and configured. to include an electric heater as described above.
- the ventilation, heating and / or air conditioning system 7 comprises a housing 71 having any shape and able to conduct the air flow as will be described below.
- the housing 71 comprises at least one air inlet 72 and a plurality of air outlets 73.
- the air flow enters within the housing 71 through the air inlet 72, for example under the effect of displacement. of the vehicle, then circulates within the housing 71 to one of the air outlets 73.
- Each of the air outlets 73 is connected to ducts each leading to a different area of the vehicle interior and the flow air is directed to one and / or the other of these air outlets depending on the area that needs to be ventilated, heated or cooled.
- the housing 71 also comprises a housing 76, configured to receive the heating body of the electric radiator.
- the housing 76 has dimensions substantially greater than the heating body.
- the housing 76 is formed from a first wall 710 delimiting the housing 71, here vertically.
- the heating body of the radiator is inserted into the housing 76 by translation along the vertical axis V. Once the radiator is in place, the heating body is arranged within the housing, across a passage for the flow of air to allow it to be heated, and the electrical connection interface 3 is arranged outside the housing, resting against an external face of a wall delimiting the housing.
- the radiator is subsequently maintained in this position, for example thanks to the fixing holes 34 of the electrical connection interface 3, through which a fixing means, such as a screw, is put in place in the housing.
- the housing 71 comprises a notch 77, formed in a second wall 712 also participating in delimiting the casing of the housing, the second wall 712 being substantially perpendicular to the first wall.
- the notch 77 has dimensions substantially greater than the dimensions of the support body 42 of the temperature measuring device 4 so that the latter can be slid through the notch 77 by translation along the transverse axis.
- FIGS 5 and 6 illustrate the housing 71 of the ventilation, heating and / or air conditioning system 7, this time equipped with the electric heater. It should be noted that the configuration of the temperature measuring device according to one aspect of the invention makes it possible to electrically connect the temperature sensors, housed inside the housing opposite an air outlet face of the body of the device. Heats the electric heater, at the low voltage portion of the electrical connection interface, from the outside of the housing.
- the sealing of the housing in the area of the radiator and of the temperature measuring device is ensured on the one hand by a seal arranged on the periphery of the electrical connection interface at the level of the first wall 710, on the periphery delimiting the entrance to the housing 76, and on the other hand by a seal arranged on the second wall 712 at the level of the notch 77.
- This seal is particularly simple to implement, without that the connection cable does not interfere with the effectiveness of the seals, and without it being necessary to provide a specific sealing element for the passage of the connection cable.
- connection cable would extend along the heating body, with a temperature measuring device inserted in the same housing as that of the heating body, the presence of the connection cable would be a problem for manage waterproofing.
- connection cable is arranged at a transverse end of the support body is combined with a transverse arrangement of the temperature measuring device at a distance from the heating body, and in a separate area of the housing receiving the heating body, which makes it easier to manage the tightness.
- FIG. 6 makes visible, in particular, in a sectional view, this ventilation, heating and / or air conditioning system equipped with the temperature measuring device.
- the heating body 2 is arranged within the housing, in a direction of insertion here vertical, and the temperature measuring device 4 is itself slipped through the notch in one direction, here transverse, perpendicular.
- the temperature measuring device 4 is inserted into the housing 71, through the notch 77, by initially making the transverse end devoid of the connection cable 5 penetrate.
- the presence of the connection cable 5 in the extension of the transverse end 420 of the support body makes it possible to insert the temperature measuring device 4 within the notch without the connection cable 5 interfering mechanically. Once the temperature measuring device 4 is in place, the transverse end 420 of the support comprising the connection cable 5 remains outside the housing 71.
- the temperature measuring device is held in place in the housing in particular by the edges delimiting the notch 77, and where appropriate by fixing means not shown here allowing the transverse end of the support body to be held within it. the notch.
- the box 71 may include compartmentalization walls which extend substantially perpendicular to the heating body when the latter is placed in the box and which make it possible to split the air circulation ducts into two to facilitate the distribution of the heating element. air flow towards such or such outlet nozzle 73.
- at least one compartmentalization wall 700 may include an additional notch 770, arranged in the transverse alignment of the notch 77, so as to be traversed by the temperature measuring device and so as to form a support thereto to prevent the support body from flexing.
- the support body 42 of the temperature measuring device is placed opposite the heating body 2, in a similar configuration. to that shown in Figure 1.
- the heating body 2 and the temperature measuring device 4 are separated by a distance 8 from each other, the distance 8 being measured substantially along the axis longitudinal circulation of the air flow 6.
- the distance 8 is at least 20 mm, in order to obtain significant temperature measurements, too close proximity between the heating body 2 and the temperature measuring device 4 which can lead to false measurements.
- the housing 71 comprises a plurality of air circulation ducts 74 within which the air flow 6 is able to circulate.
- the housing 71 also comprises at least one thermosensitive element 75. , which can be damaged if the ambient temperature is too high.
- the thermosensitive element 75 is a flap capable of pivoting between an open position, visible in FIG. 6, in which the flap allows the passage of the air flow 6 through the circulation duct d air 74 in which the electric heater is arranged, and a closed position of this air circulation duct which tends to force the air flow to pass through a duct without an electric radiator.
- the air flow 6 rushes through the air inlet 72, circulates in the air circulation duct 74 equipped with the electric heater 1 and passes through the heating body 2.
- the air flow 6 emerges from the heating body 2 at high temperature.
- the air flow 6 then passes through the temperature measuring device 4 and then comes into contact with the thermosensitive element 75. If the air flow 6 is too hot, the latter is liable to damage the thermosensitive element 75.
- the temperature measuring device 4 is placed at the outlet of the heating body, being interposed between the heating body. heater 2 and the thermosensitive element 75.
- the temperature of the air flow 6 at the outlet of the heating body is checked by the temperature measuring device 4, this temperature being representative of the temperature of the air flow when it comes into contact with the thermosensitive element 75. It is understood that when the temperature of the air flow 6 is estimated to be too high for the thermosensitive element 75, that is to say it exceeds a predefined threshold, the temp measuring device Temperature 4 is able to send data to the electrical connection interface 3 through the connection cable 5 so that the electrical connection interface 3 acts on the power supply and the operation of the heating elements of the heating body 2 in order to to decrease warming. The air flow 6 thus emerges of the heating body 2 at a lower temperature, which preserves the thermosensitive element 75.
- the invention achieves the aim it had set itself, and makes it possible to provide an electric radiator which comprises a temperature sensor capable of being placed at a distance from the heating body, in order to best measure the temperature of the air flow leaving the heating body, and the installation of which in the housing of a heating, ventilation, air conditioning system does not pose a sealing problem.
- Variants not described here could be implemented without departing from the context of the invention, since, in accordance with the invention, they comprise a support body extended at one transverse end by a connection cable capable of being connected. to the heating body, and in particular to a low voltage portion, from the outside of the housing, in accordance with the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1913351A FR3103670B1 (fr) | 2019-11-27 | 2019-11-27 | Radiateur électrique avec dispositif de mesure de température |
| PCT/FR2020/052048 WO2021105581A1 (fr) | 2019-11-27 | 2020-11-10 | Radiateur electrique avec dispositif de mesure de temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4066593A1 true EP4066593A1 (fr) | 2022-10-05 |
Family
ID=69572227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20816292.5A Withdrawn EP4066593A1 (fr) | 2019-11-27 | 2020-11-10 | Radiateur electrique avec dispositif de mesure de temperature |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20220402334A1 (fr) |
| EP (1) | EP4066593A1 (fr) |
| CN (1) | CN114731742A (fr) |
| FR (1) | FR3103670B1 (fr) |
| WO (1) | WO2021105581A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3126650B1 (fr) * | 2021-09-03 | 2023-09-08 | Valeo Systemes Thermiques | Radiateur electrique pour une installation de ventilation, de chauffage et/ou de climatisation. |
| KR102852819B1 (ko) * | 2023-06-01 | 2025-08-29 | 자화전자(주) | 차량용 공기가열장치의 후면 커버 조립체 및 이를 포함하는 차량용 공기가열장치 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19918906C2 (de) * | 1999-04-26 | 2003-07-17 | Valeo Klimasysteme Gmbh | PTC-Heizregister |
| DE10348649A1 (de) * | 2003-10-15 | 2005-05-19 | Behr Gmbh & Co. Kg | Mehrzonige Kraftfahrzeug-Klimaanlage |
| KR100445723B1 (ko) * | 2003-11-18 | 2004-08-26 | 우리산업 주식회사 | Ptc 소자 모듈 및 이를 포함하는 차량용 프리히터 |
| JP4529873B2 (ja) * | 2005-01-27 | 2010-08-25 | 株式会社デンソー | 空調ユニット |
| CN1854636A (zh) * | 2005-04-15 | 2006-11-01 | Kaz公司 | 小型便携式电加热器 |
| FR2922817B1 (fr) * | 2007-10-31 | 2012-12-21 | Valeo Systemes Thermiques | Dispositif de chauffage electrique d'un flux d'air circulant a l'interieur d'une installation de ventilation, de chauffage et/ou de climatisation d'un vehicule automobile |
| JP5394008B2 (ja) * | 2008-06-03 | 2014-01-22 | 株式会社ケーヒン | 温度検出器 |
| EP2772820B1 (fr) * | 2013-02-27 | 2015-04-08 | Eberspächer catem GmbH & Co. KG | Dispositif de chauffage électrique pour un véhicule automobile |
| EP2772375B1 (fr) * | 2013-02-27 | 2017-10-18 | Eberspächer catem GmbH & Co. KG | Dispositif de chauffage électrique pour un véhicule automobile |
| JP6169781B2 (ja) * | 2013-04-28 | 2017-07-26 | ビーワイディー カンパニー リミテッドByd Company Limited | 電気ヒータ、デフロスタ、暖房空調システム及び車輌 |
| CN205385687U (zh) * | 2016-02-25 | 2016-07-13 | 湘潭大学 | 一种散热器 |
| US11375697B2 (en) * | 2017-04-12 | 2022-07-05 | Alessandro GAMBERONI | Rational hive structure |
-
2019
- 2019-11-27 FR FR1913351A patent/FR3103670B1/fr active Active
-
2020
- 2020-11-10 EP EP20816292.5A patent/EP4066593A1/fr not_active Withdrawn
- 2020-11-10 WO PCT/FR2020/052048 patent/WO2021105581A1/fr not_active Ceased
- 2020-11-10 CN CN202080081157.5A patent/CN114731742A/zh active Pending
- 2020-11-10 US US17/779,191 patent/US20220402334A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021105581A1 (fr) | 2021-06-03 |
| FR3103670B1 (fr) | 2021-10-15 |
| CN114731742A (zh) | 2022-07-08 |
| FR3103670A1 (fr) | 2021-05-28 |
| US20220402334A1 (en) | 2022-12-22 |
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