• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    This ventilation duct (1) with a double flow, intended to be mounted in a ventilation system of a building, comprises a heat exchanger (3) with double flow, inlet (5) and outlet (7) compartments. an extracted air flow (F1) and inlet (9) and outlet (11) compartments of a blown air flow (F2), and at least one extraction blower (13) adapted to maintain the circulation of the extracted air flow (F1) in the box (1). The extraction fan (13) is rotated by a motor located in a compartment isolated from the extracted air flow (F1), and the box (1) comprises a bypass duct (19) of a part of the flow extract air (F1) outside the exchanger (3) directly between the inlet (5) and outlet (7) compartments of the extracted air flow (F1).
    公开号:FR3033627A1
    申请号:FR1500502
    申请日:2015-03-13
    公开日:2016-09-16
    发明作者:Lionel Cachot
    申请人:Air France SA；
    IPC主号:
    专利说明:

    [0001] The invention relates to a dual flow ventilation box intended to be mounted in a ventilation system of a building.
    [0002] Residential or office buildings are generally equipped with a ventilation and air treatment system including a ventilation box including a double-flow heat exchanger in which heat exchanges are made between a flow of air extracted from the rooms. of the building, and a flow of fresh air blown into the building's rooms.
    [0003] In case of fire, the air extracted from the rooms of the building is very hot and is therefore likely to damage certain elements of the exchanger and the ventilation box. However, the ventilation box must make it possible to extract fumes from the rooms of the building. The exchanger and the box must therefore be built sufficiently robust to extract fumes while resisting high temperatures, and the drawbacks that result, including the risk of hot air leakage and fumes in the stream fresh air. The ventilation boxes known from the state of the art do not allow to ensure normal operation under fire conditions for a sufficient length of time. These boxes have problems of deterioration of the exchanger, and leakage of fumes and hot air in the fresh air flow. It is these drawbacks that the invention intends to remedy by proposing a new ventilation box, in which the extracted air flows and the fresh air flow are better insulated and whose operation is ensured under the conditions of fire for a significant duration.
    [0004] For this purpose, the invention relates to a double-flow ventilation box intended to be mounted in a ventilation installation of a building, the box comprising a double-flow heat exchanger, inlet and outlet compartments of a flow extract air and inlet and outlet compartments of a blown air flow, and at least one exhaust fan adapted to maintain the circulation of the extracted air flow in the box. This ventilation box is characterized in that the exhaust fan is rotated by a motor located in an isolated compartment of the extracted air flow, and the box comprises a bypass duct of a part of the air flow. extracted outside the exchanger, directly between the inlet and outlet compartments of the extracted air flow. Thanks to the invention, the operation of the exhaust fan is guaranteed in fire conditions. The amount of potentially hot extract air circulating in the exchanger is reduced, which reduces the risk of deterioration of the exchanger and contamination with fresh air. According to advantageous but non-obligatory aspects of the invention, such a ventilation box may incorporate one or more of the following features, taken in any technically permissible combination: The ventilation box comprises a register adapted to control the opening of the ventilation duct. a bypass located on the side of the inlet compartment of the extracted air flow, this damper being controlled by a servomotor, a temperature probe placed in the inlet compartment of the extracted air flow, and the control means of the servomotor adapted to open the damper when the temperature of the extracted air measured by the probe exceeds a threshold value. The damper is maintained by default in the closed position by the servomotor. The ventilation box comprises a return member adapted to open the damper when the servomotor is no longer electrically powered.
    [0005] The exchanger is fixed by gluing in a housing of the box. The ventilation box comprises compartments sealing systems, arranged between the exchanger and partitions defining the compartments. The sealing systems are made using layers of high temperature resistant silicone disposed at the interfaces between the exchanger and the partitions defining the compartments. The sealing systems are made using layers of intumescent material disposed at the interfaces between the exchanger and the partitions defining the compartments.
    [0006] The ventilation box comprises a mechanical reinforcement structure mounted on the walls of the box. The ventilation box comprises a temperature sensor placed in the inlet compartment of the extracted air flow, and means for cutting off the power supply of all the electrical devices of the box except for the exhaust fan and an insufflation fan included in the ventilation box, when the temperature of the extracted air exceeds a threshold value. The invention also relates to a method of controlling a ventilation box as mentioned above, characterized in that the exhaust fan and an insufflation fan included in the ventilation box are maintained in operation. whatever their operating state, when the temperature of the extracted air measured at the inlet of the ventilation box exceeds a threshold value. The invention will be better understood and other advantages thereof will appear more clearly in the light of the description which follows, a ventilation box 5 according to its principle, given by way of non-limiting example with reference to the accompanying drawings in which: - Figure 1 is a schematic side view of a ventilation box according to the invention; Figure 2 is a schematic top view of the ventilation box of Figure 1; - Figure 3 is a perspective view of the ventilation chamber of Figures 1 and 2. Figures 1 to 3 show a ventilation box 1 to be mounted in a ventilation system of a building not shown. The caisson 1 comprises a double-flow exchanger 3, in which cross-flow exchanges take place between a stream of extracted air F1 and an inflated air flow F2. The box 1 also comprises an inlet compartment 5 of the extracted air stream F1, an outlet compartment 7 of the extracted air stream F1, an inlet compartment 9 of the supply air stream F2 and an outlet compartment 11 of the blown airflow F2. An exhaust fan 13 is mounted in the outlet compartment 7, and an insufflation fan 15 is mounted in the outlet compartment 11. The fan 13 serves to maintain the flow of the extracted air stream F1, while the fan 15 makes it possible to maintain the circulation of the inflated air flow F2 in the casing 1. The extraction fan 13 is rotated by a motor 16. According to the invention, the motor 16 is located in a compartment 17 which isolates the motor 16 from the extracted air stream F1. The compartment 17 can be installed in the outlet compartment 7. Thus the motor 16 is protected against the potential high temperatures that can reach the flow of exhaust air F1 in case of fire. This structure makes it possible to avoid failures of the engine 16 in case of fire. The compartment 17 can be for this purpose constituted, at least in part, refractory materials or any other material for thermally isolating the compartment 17. The blowing fan 15 is rotated by a motor 18. According to one aspect As an optional feature of the invention, the motor 18 may also be insulated in a high temperature resistant compartment. The casing 1 comprises a bypass duct 19 making it possible to divert part of the extracted air flow F1 outside the exchanger 3, directly between the compartments 5 and 7, so that, in case of fire , part of the hot air and harmful fumes contained in the flow of exhaust air F1 is not directed to the exchanger 3 to prevent deterioration of the exchanger 3 and leaks of fumes and hot air towards the blown airflow F2 and decrease the temperature of the air blown.
    [0007] The bypass duct 19 is preferably arranged in the vicinity of a lateral face 34 of the caisson 1, in the extension of the exchanger 3. The caisson 1 comprises a damper 21 adapted to control the opening of the bypass duct 19 located the compartment side 5. The opening of the damper 21 is controlled by a servomotor 22. The servomotor 22 is preferably controlled by a control unit 30 adapted to communicate, for example by electrical signals, with the servomotor 22. L control unit 30 can be installed in a housing 32 mounted along the side face 34. The box 1 comprises a temperature sensor 25 placed in the inlet compartment 5 for measuring the temperature of the incoming air flow F1 entering The control unit 30 is adapted to receive signals from the probe 25, representative of the measured air temperatures. If the temperature measured by the probe 25 exceeds a threshold value, for example 70 °, the servomotor 22 is controlled by the control unit 30 to open the damper 21 so that a part of the extracted airflow F1 is The damper 21 is held in the closed position by the servomotor 22 by default. Optionally, a not shown restoring member, such as a spring, exerts on the damper 21 a force tending to drag him to his open position. This allows, if the servomotor 22 is no longer supplied with electrical energy following its destruction by fire or the failure of other elements of the box 1 following a fire, to automatically open the register 21 so that the Exhaust air F1 is derived in the bypass duct 19. The exchanger 3 is mounted in a housing of the box 1, delimited by partitions 360, 362, 364 and 366 of the box 1. The partition 360 is located above the exchanger 3 and delimits the compartments 7 and 11. The partition 362 delimits the compartments 5 and 11.
    [0008] The partition 364 is part of a support element situated below the exchanger 3 and which delimits the compartments 5 and 9. The partition 366 delimits the compartments 7 and 9. The exchanger 3 delimits in part the compartments 5, 7, 9 and 11 relative to each other, and its mounting in its housing has an influence on the sealing of the box 1 and the potential for hot air and smoke leakage between the extracted air flow F1 and 35 the flow of air blown F2.
    [0009] To improve the sealing of the assembly between the exchanger 3 and the compartments of the box 1, the exchanger 3 is preferably fixed by gluing in its housing by means of a glue or silicone resistant to high temperatures. In order to reduce the risks of contamination of the fresh air by the fumes, unrepresented sealing systems of the compartments 5, 7, 9 and 11 can be arranged between the partitions 360, 362, 364 and 366 delimiting the compartments and the exchanger 3. These sealing systems may comprise unrepresented silicone layers disposed at the interfaces between the exchanger 3 and the partitions 360, 362, 364 and 366, these silicone layers also being able to serve to fix the exchanger 3. Alternatively, unrepresented layers of intumescent material may be disposed at the interfaces between the exchanger 3 and the partitions 360, 362, 364 and 366. To reduce the deformations caused by the circulation of air at high temperature in the box 1, a mechanical reinforcing structure 23 is mounted on the walls of the caisson 1. This reinforcing structure 23 makes it possible to avoid deformations which can impair the tightness of the box 1 by deforming the contact interfaces between the exchanger 3 and its housing, and by deforming the partitions 360, 362, 364 and 366. The reinforcing structure 23 advantageously comprises a horizontal crossbar 23a located in the extension of the partitions 362 and 366, and two vertical crosspieces 23b and 23c fixed perpendicularly to the horizontal cross member 23a. The reinforcing structure 23 also includes reinforcements 23d which reinforce the edges of the box 1, and to which the vertical crosspieces 23b and 23c are fixed. Preferably, the reinforcing structure 23 comprises metal profiles, for example aluminum. The casing 1 also comprises means for cutting off the electrical supply of all the electrical devices of the casing 1, such as the booster 22, with the exception of the extraction fan 13 and the insufflation blower 15, when the temperature the extract air flow F1 measured by the probe 25 exceeds the threshold value. This means may comprise electrical relays deactivated from the control unit 30. Thus, all the non-essential electrical devices are no longer powered electrically, which reduces the risk of short circuit of the electrical system of the box 1 in case fire. The exhaust fan 13, which must provide air extraction in case of fire, is essential and must continue to operate. It can not therefore be cut off by the control unit 30. Optionally, the insufflation ventilator 15 can also be considered essential and can not be deactivated by the control unit 30.
    [0010] Finally, when the temperature of the extracted air flow F1 measured by the probe 25 exceeds the threshold value, the insufflation 15 and extraction fans 13 go into fire mode. In this mode, the fans 13 and 15 operate regardless of their operating state, without taking into account all the possible operating faults such as overload, overcurrent, overheating, etc ... The passage of the fans 13 and 15 in mode The fire can also be controlled from the control unit 30. 10
    权利要求:
    Claims (11)
    [0001]
    REVENDICATIONS1. Ventilation box (1) with double flow intended to be mounted in a ventilation system of a building, the box (1) comprising a heat exchanger (3) with double flow, inlet (5) and outlet compartments ( 7) an extract air flow (F1) and inlet (9) and outlet (11) compartments of a blown air flow (F2), and at least one exhaust fan (13); ) adapted to maintain the circulation of the extracted air flow (F1) in the box (1), characterized in that: - the extraction fan (13) is rotated by a motor (16) located in a compartment (17) isolated from the extracted air flow (F1), and - the box (1) comprises a bypass duct (19) of a part of the extracted air flow (F1) outside the exchanger (3). ), directly between the inlet (5) and outlet (7) compartments of the extracted air stream (F1).
    [0002]
    2. Ventilation box according to one of the preceding claims, characterized in that it comprises: - a register (21) adapted to control the opening of the bypass duct (19) located on the side of the compartment (5) of inlet of the extracted air flow (F1), this damper (21) being controlled by a servomotor (22), - a temperature sensor (25) placed in the inlet compartment (5) of the extracted air flow ( F1), and - control means (30) of the servomotor (22) adapted to open the register (21) when the temperature of the extracted air (F1) measured by the probe (25) exceeds a threshold value.
    [0003]
    3. Ventilation box according to claim 2, characterized in that the register (21) is maintained by default in the closed position by the servomotor (22).
    [0004]
    4. Ventilation box according to claim 3, characterized in that it comprises a return member adapted to open the damper (21) when the servomotor (22) is no longer electrically powered. 3033627 8
    [0005]
    5. Ventilation box according to one of the preceding claims, characterized in that the exchanger (3) is fixed by gluing in a housing (360, 362, 364, 366) of the box (1). 5
    [0006]
    6. Ventilation box according to one of the preceding claims, characterized in that it comprises sealing systems compartments (5, 7, 9, 11) disposed between the exchanger (3) and partitions (360, 362, 364, 366) delimiting the compartments. 10
    [0007]
    Ventilation box according to Claim 6, characterized in that the sealing systems comprise high temperature resistant silicone layers arranged at the interfaces between the exchanger (3) and the partitions (360, 362, 364, 366). delimiting the compartments (5, 7, 9, 11). 15
    [0008]
    Ventilation box according to one of Claims 6 and 7, characterized in that the sealing systems comprise intumescent material layers arranged at the interfaces between the exchanger (3) and the partitions (360, 362, 364, 366) delimiting the compartments (5, 7, 9, 11). 20
    [0009]
    9. Ventilation box according to one of the preceding claims, characterized in that it comprises a structure (23) of mechanical reinforcement mounted on the walls of the box (1).
    [0010]
    10. Ventilation box according to one of the preceding claims, characterized in that it comprises a temperature sensor (25) placed in the inlet compartment (5) of the extracted air flow (F1), and means (30) for cutting off the power supply of all the electrical devices of the box (1) with the exception of the extraction fan (13) and an insufflation fan (15) included in the ventilation box ( 1) when the extracted air temperature (F1) exceeds a threshold value. 30
    [0011]
    11. Method of controlling a ventilation box (1) according to one of the preceding claims, characterized in that the exhaust fan (13) and an insufflation fan (15) included in the ventilation box ( 1) are kept in operation regardless of their operating state, when the temperature of the extracted air measured at the inlet of the ventilation box (1) exceeds a threshold value.
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    同族专利:
    公开号 | 公开日
    FR3033627B1|2020-01-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0044560A2|1980-07-22|1982-01-27|Eltreva AG|Ventilation system for forced circulation ventilation of a space|
    EP1850012A1|2006-04-28|2007-10-31|Aldes Aeraulique|Ventilation device|
    FR2951248A1|2009-10-14|2011-04-15|France Air|Air extraction case for use during fire in building, has engine equipped in compartment and cooled by cooling air different from flow of air to be extracted, and cooling unit placed towards engine|
    EP2333446A1|2009-11-23|2011-06-15|France Air S.A.|Method for cleaning a ventilation installation, ventilation installation and double-flow heat-recovery unit|
    US20130048267A1|2010-06-11|2013-02-28|Mitsubishi Electric Corporation|Ventilation and air-conditioning apparatus and method for controlling the same|CN107449092A|2017-07-13|2017-12-08|芜湖泰领信息科技有限公司|Flat board tubular type new air heat-exchange system|
    FR3058780A1|2016-11-14|2018-05-18|France Air|DEVICE FOR VENTILATION AND AIR TREATMENT AND METHOD FOR CONTROLLING SUCH A DEVICE|
    CN108917075A|2018-07-24|2018-11-30|浙江曼瑞德环境技术股份有限公司|A kind of new and effective new blower|
    EP3739273A1|2019-05-13|2020-11-18|Atlantic Climatisation et Ventilation|Room ventilation system|
    法律状态:
    2016-01-14| PLFP| Fee payment|Year of fee payment: 2 |
    2016-09-16| PLSC| Publication of the preliminary search report|Effective date: 20160916 |
    2017-01-30| PLFP| Fee payment|Year of fee payment: 3 |
    2017-12-29| PLFP| Fee payment|Year of fee payment: 4 |
    2019-02-21| PLFP| Fee payment|Year of fee payment: 5 |
    2020-02-25| PLFP| Fee payment|Year of fee payment: 6 |
    2021-02-10| PLFP| Fee payment|Year of fee payment: 7 |
    2022-02-10| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1500502|2015-03-13|
    FR1500502A|FR3033627B1|2015-03-13|2015-03-13|VENTILATION BOX|FR1500502A| FR3033627B1|2015-03-13|2015-03-13|VENTILATION BOX|
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