Ventilation apparatus selection system

Abstract

To provide a ventilation apparatus selection system capable of selecting a ventilation apparatus which has a proper ventilation amount.SOLUTION: A ventilation apparatus selection system 1 for selecting a ventilation apparatus which is installed in a building and can perform exhaustion operation, comprises: a recording part for recording (step S11) building information including an air volume of a building; a presentation part for presenting (step S14) a ventilation apparatus which can be installed in each room of the building; a calculation part for calculating (step S16) a required ventilation amount of the building on the basis of the building information recorded by the recording part, and calculating (step S15, S22) a total exhaustion amount of the ventilation apparatuses selected from the ventilation apparatuses presented by the presentation part, where the presentation part is configured so that, when the total exhaustion amount is not the required ventilation amount or more (No in step S16), and when the total exhaustion amount is not less than a ventilation amount upper limit greater than the required ventilation amount (No in step S17), represents (step S14) the ventilation apparatus different from the presented ventilation apparatuses.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a technique for a ventilation equipment selection system for selecting a ventilation equipment to be installed in a building. [Background technology]

[0002] Conventionally, the technology of a ventilation equipment selection system for selecting a ventilation equipment to be installed in a building is publicly known, as described in Patent Document 1, for example.

[0003] Patent Document 1 discloses a technology that acquires room information for each room in a building from BIM information, calculates the required ventilation volume for each room based on the acquired room information, and selects ventilation equipment based on the calculated required ventilation volume.

[0004] However, the technology described in Patent Document 1 does not consider the upper limit of the ventilation volume. In a house, there are many rooms that require temporary ventilation, such as toilets, washrooms, and bathrooms, in a relatively small space. When the air volumes of the ventilation devices installed in each of these rooms are added together, the upper limit of the appropriate ventilation volume may be exceeded, resulting in a decrease in comfort and a risk of summer condensation due to excessive negative pressure. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2019-67083 A Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been made in consideration of the above-mentioned circumstances, and the problem to be solved by the present invention is to provide a ventilation equipment selection system capable of selecting a ventilation equipment that provides an appropriate ventilation volume. [Means for solving the problem]

[0007] The problem to be solved by the present invention has been described above, and the means for solving this problem will now be described.

[0008] That is, claim 1 provides a ventilation equipment selection system for selecting a ventilation equipment capable of exhaust operation that is installed in a building, the system comprising: a recording unit that records building information including the air volume of the building; a presentation unit that presents ventilation equipment that can be installed in each room of the building; and a calculation unit that calculates the required ventilation volume of the building based on the building information recorded by the recording unit and calculates the total exhaust volume of ventilation equipment selected from the ventilation equipment presented by the presentation unit, and the presentation unit re-presents a ventilation equipment different from the presented ventilation equipment if the total exhaust volume is not greater than or equal to the required ventilation volume and if the total exhaust volume is not less than a ventilation volume upper limit value that is greater than the required ventilation volume.

[0009] In claim 2, the calculation unit determines, as the total exhaust volume, the sum of exhaust air volumes of the ventilation devices that perform constant ventilation among the selected ventilation devices.

[0010] In claim 3, the calculation unit calculates the differential pressure between the outside air pressure and the room pressure, and the presentation unit re-presents ventilation equipment whose operating time can be limited when the differential pressure is equal to or greater than a predetermined threshold value.

[0011] In claim 4, the presentation unit presents at least one of a timer-linked ventilation appliance, a temperature sensor-linked ventilation appliance, and a humidity sensor-linked ventilation appliance again as the ventilation appliance whose operation time can be limited.

[0012] Claim 5 provides a ventilation equipment selection system for selecting ventilation equipment to be installed in a building, comprising a recording unit which records building information including an air volume of the building, and a selection unit which selects ventilation equipment to be installed in each room of the building, wherein the selection unit selects ventilation equipment from among ventilation equipment whose total exhaust volume is equal to or greater than the required ventilation volume of the building calculated based on the building information recorded by the recording unit, and is less than a ventilation volume upper limit value which is greater than the required ventilation volume. Effect of the Invention

[0013] The present invention has the following advantages.

[0014] In claim 1, a ventilation device that provides an appropriate ventilation volume can be selected.

[0015] According to claim 2, a sufficient amount of ventilation can be ensured.

[0016] According to claim 3, it is possible to prevent the interior of the room from becoming excessively negative pressure.

[0017] According to claim 4, excessive negative pressure in the room can be prevented with a simple configuration.

[0018] In claim 5, a ventilation device that provides an appropriate ventilation volume can be selected. [Brief description of the drawings]

[0019] [Figure 1] 1 is a block diagram showing the configuration of a ventilation equipment selection system according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a block diagram showing the configuration of a user terminal. [Diagram 3] 11 is a flowchart showing ventilation device selection control. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The configuration of a ventilation equipment selection system 1 according to one embodiment of the present invention will be described below with reference to FIG.

[0021] The ventilation equipment selection system 1 is a system for selecting ventilation equipment for residential use. The "ventilation equipment" to be selected by the ventilation equipment selection system 1 is capable of performing exhaust operation to exhaust air from indoors to outdoors. The ventilation equipment includes continuous ventilation equipment that performs continuous ventilation, and local ventilation equipment that performs local ventilation. The ventilation equipment selection system 1 mainly comprises a user terminal 10 and a server 20.

[0022] The user terminal 10 is a terminal used by a user. The user may be, for example, a building designer. The user terminal 10 is used, for example, when selecting a 24-hour ventilation system to be installed in a building and ventilation equipment to be installed in each room. A personal computer or the like may be used as the user terminal 10. Details of the user terminal 10 will be described later.

[0023] The server 20 is connected to each user terminal 10 via a network N. The network N includes public networks such as the Internet, wireless networks such as mobile phone networks, LANs (Local Area Networks), etc. The server 20 stores various information such as the types of 24-hour ventilation systems and ventilation equipment that can be installed in homes.

[0024] The configuration of the user terminal 10 will be described below with reference to Fig. 2. The user terminal 10 includes a communication unit 11, an operation input unit 12, a calculation unit 13, and a display unit 14.

[0025] The communication unit 11 is a part that communicates with the server 20. The communication unit 11 can transmit information inputted at the user terminal 10 to the server 20 and receive information stored in the server 20.

[0026] The operation input unit 12 is a part for inputting and selecting various information by user operation. A keyboard, a mouse, or the like is used as the operation input unit 12. The user can use the operation input unit 12 to input information, etc. The user can use the operation input unit 12 to input, for example, building information. The user can also use the operation input unit 12 to select a 24-hour ventilation system to be installed in the building and ventilation equipment to be installed in each room.

[0027] The calculation unit 13 is a part that performs various calculations. The calculation unit 13 can perform various calculations based on information input by the operation input unit 12 and information of the server 20 acquired via the communication unit 11.

[0028] The calculation unit 13 has a storage unit that stores various data. The storage unit stores information received from the server 20 by the communication unit 11. The storage unit also stores programs for various processes. The calculation unit 13 reads out the programs and executes various processes described below.

[0029] The display unit 14 displays images. For example, a display device such as a liquid crystal display is used as the display unit 14. The display unit 14 can display a screen for inputting building information, a screen for selecting a 24-hour ventilation system to be installed in the building, and a screen for selecting a ventilation device to be installed in each room.

[0030] In a home, there are many rooms that require temporary ventilation, such as toilets, washrooms, and bathrooms, within a relatively small building space, and when the airflow volumes of the equipment installed in these rooms are added together, it can exceed the upper limit of the appropriate ventilation volume, resulting in a decrease in comfort and the risk of summer condensation due to excessive negative pressure.

[0031] Therefore, in the ventilation equipment selection system 1 according to this embodiment, ventilation equipment selection control is performed to select a ventilation equipment that provides an appropriate ventilation amount.

[0032] The flow of the ventilation equipment selection control will be described below with reference to the flowchart in Fig. 3. The ventilation equipment selection control shown in Fig. 2 is executed at the design stage of a building by a user (designer). Here, it is assumed that the building is a two-story detached house.

[0033] In step S11, the calculation unit 13 acquires (records) building information via the operation input unit 12. Here, "building information" refers to various information related to the building (residence) to be designed. The building information includes, for example, the floor area (first floor floor area and second floor floor area) and ceiling height (first floor ceiling height and second floor ceiling height) of each of the first and second floors. The building information also includes expected airtightness performance (expected airtightness performance). Here, "airtightness performance" refers to a numerical value [cm] that indicates the degree of gaps that exist relative to the size (area) of the building. 2 / m 2 ] and is commonly referred to as the C value.

[0034] After performing the process of step S11, the calculation unit 13 proceeds to step S12.

[0035] In step S12, the calculation unit 13 calculates the air volume and the total equivalent gap area αA based on the building information acquired in step S11. Here, the "air volume" is the volume [m 3 ] and is calculated by the following formula 1.

[0036] Air volume = (1st floor floor area × 1st floor ceiling height) + (2nd floor floor area × 2nd floor ceiling height) (Formula 1)

[0037] In addition, "total equivalent gap area αA" is the gap area of ​​the entire building [cm 2 ] and is calculated by the following formula 2.

[0038] αA = (1st floor floor area + 2nd floor floor area) × (expected airtightness performance) (Formula 2)

[0039] After performing the process of step S12, the calculation unit 13 proceeds to step S13.

[0040] In step S13, the calculation unit 13 selects (determines) a 24-hour ventilation system to be installed in the building. Specifically, the calculation unit 13 obtains a list of 24-hour ventilation systems (e.g., first-class heat exchange type, third-class non-heat exchange type, etc.) that can be installed in the building from the server 20 via the communication unit 11. Then, the calculation unit 13 displays a selection screen for selecting the 24-hour ventilation system to be installed in the building on the display unit 14. The user can select the 24-hour ventilation system to be installed in the building based on the customer's request, etc. The calculation unit 13 determines the 24-hour ventilation system to be installed in the building based on the user's selection.

[0041] After performing the process of step S13, the calculation unit 13 proceeds to step S14.

[0042] In step S14, the calculation unit 13 selects (determines) the ventilation equipment to be installed in each room. Specifically, the calculation unit 13 acquires a list of ventilation equipment to be installed in each room (e.g., toilet, washroom, bathroom, storeroom, hobby room, etc.) from the server 20 via the communication unit 11. Then, the calculation unit 13 displays a selection screen for selecting the ventilation equipment to be installed in each room on the display unit 14. The ventilation equipment displayed in the list includes various constant ventilation equipment that performs constant ventilation and various local ventilation equipment that performs local ventilation. The user can select the ventilation equipment to be installed in each room based on the customer's request, etc. The calculation unit 13 determines the ventilation equipment to be installed in each room based on the user's selection.

[0043] After performing the process of step S14, the calculation unit 13 proceeds to step S15.

[0044] In step S15, the calculation unit 13 calculates the total mechanical exhaust volume. Here, the "total mechanical exhaust volume" is the total mechanical exhaust volume [m 3 / h]. The calculation unit 13 calculates, as the total mechanical exhaust volumes, a first total mechanical exhaust volume Q1 due to only the continuous ventilation equipment and a second total mechanical exhaust volume Q2 due to the continuous ventilation equipment and the local ventilation equipment.

[0045] After performing the process of step S15, the calculation unit 13 proceeds to step S16.

[0046] In step S16, the calculation unit 13 judges whether the ventilation rate by the ventilation equipment is 0.5 times / h or more. Here, "0.5 times / h" is the required ventilation rate stipulated by the Building Standards Act, that is, the lower limit of the appropriate ventilation rate. If the first total mechanical exhaust volume Q1 by only the constant ventilation equipment calculated in step S14 is "(0.5 times / h) x air volume" or more, the calculation unit 13 judges that the ventilation rate by the ventilation equipment is 0.5 times / h or more. On the other hand, if the first total mechanical exhaust volume Q1 by only the constant ventilation equipment is not "(0.5 times / h) x air volume" or more, the calculation unit 13 judges that the ventilation rate by the ventilation equipment is not 0.5 times / h or more.

[0047] When the calculation unit 13 determines that the ventilation rate by the ventilation device is 0.5 times / h or more ("YES" in step S16), the process proceeds to step S17. On the other hand, when the calculation unit 13 determines that the ventilation rate by the ventilation device is not 0.5 times / h or more ("NO" in step S16), the process returns to step S14.

[0048] If the ventilation rate by the ventilation equipment is 0.5 times / h or more (YES in step S16), it means that the required ventilation volume can be secured by the continuous ventilation equipment selected in step S14. On the other hand, if the ventilation rate by the ventilation equipment is not 0.5 times / h or more (NO in step S16), it means that the required ventilation volume cannot be secured by the continuous ventilation equipment selected in step S14.

[0049] If the required ventilation volume cannot be ensured by the constant ventilation equipment selected in step S14 ("NO" in step S16), the calculation unit 13 causes the display unit 14 to re-present a ventilation equipment different from the previously presented ventilation equipment (step S14). The user can reselect a ventilation equipment with a larger exhaust volume.

[0050] In step S17, the calculation unit 13 judges whether the ventilation rate by the ventilation equipment is less than 1.0 times / h. Here, "1.0 times / h" is the upper limit of the ventilation rate (maximum allowable ventilation rate) that is permitted in consideration of the impact on comfort. If the first total mechanical exhaust volume Q1 by only the constant ventilation equipment calculated in step S14 is less than "(1.0 times / h) x air volume", the calculation unit 13 judges that the ventilation rate by the ventilation equipment is less than 1.0 times / h. On the other hand, if the first total mechanical exhaust volume Q1 by only the constant ventilation equipment is not less than "(1.0 times / h) x air volume", the calculation unit 13 judges that the ventilation rate by the ventilation equipment is not less than 1.0 times / h.

[0051] If the ventilation rate by the ventilation device is less than 1.0 times / h (YES in step S17), it means that the ventilation volume by the continuous ventilation device selected in step S14 is below the maximum allowable ventilation volume (within the range of appropriate ventilation volume). On the other hand, if the ventilation rate by the ventilation device is not less than 1.0 times / h (NO in step S17), it means that the ventilation volume by the continuous ventilation device selected in step S14 is equal to or greater than the maximum allowable ventilation volume (outside the range of appropriate ventilation volume).

[0052] When the calculation unit 13 determines that the ventilation rate by the ventilation device is less than 1.0 times / h ("YES" in step S17), the process proceeds to step S18. On the other hand, when the calculation unit 13 determines that the ventilation rate by the ventilation device is not less than 1.0 times / h ("NO" in step S17), the process returns to step S14.

[0053] If the ventilation volume (total mechanical exhaust volume) by the continuous ventilation device selected in step S14 is equal to or larger than the maximum allowable ventilation volume ("NO" in step S17), the calculation unit 13 causes the display unit 14 to re-present a ventilation device different from the previously presented ventilation device (step S14). The user can reselect a ventilation device with a smaller exhaust volume.

[0054] In step S18, the calculation unit 13 calculates the indoor / outdoor pressure difference ΔP (the pressure difference between the outdoor air pressure and the indoor pressure) [Pa]. The pressure difference ΔP is calculated by the following formula 3.

[0055] ΔP=1 / 2×ρ×{(Q2 / 3600) / (αA / 10000)} 2 ...(Formula 3)

[0056] In the above formula 3, "ρ" is the air density [kg / m 3 In this embodiment, the air density ρ is a fixed value (1.2 [kg / m 3 ]) and "αA" is the opening area of ​​the building [cm 2 ]. Also, "Q2" means the second total mechanical exhaust volume Q2 [m 3 / h] (see step S15).

[0057] After performing the process of step S18, the calculation unit 13 proceeds to step S19.

[0058] In step S19, the calculation unit 13 determines whether the room is under excessive negative pressure. If the differential pressure ΔP calculated in step S18 is less than a predetermined threshold, the calculation unit 13 determines that the room is not under excessive negative pressure. On the other hand, if the differential pressure ΔP calculated in step S18 is not less than the predetermined threshold (is equal to or greater than the predetermined threshold), the calculation unit 13 determines that the room is under excessive negative pressure. The predetermined threshold is set taking into consideration the impact on comfort and the amount of outside air entering due to negative pressure, and is set to, for example, 2 [Pa].

[0059] When the calculation unit 13 determines that the room is not under excessive negative pressure ("YES" in step S19), it ends the ventilation device selection control shown in Fig. 3. On the other hand, when the calculation unit 13 determines that the room is under excessive negative pressure ("NO" in step S19), it proceeds to step S20.

[0060] In step S20, the calculation unit 13 proposes an operation method for the ventilation device installed in each room. Specifically, the calculation unit 13 proposes a ventilation device that can shorten the operation time compared to the ventilation device selected in step S14. For example, the calculation unit 13 causes the display unit 14 to display a list of ventilation devices that can be installed in each room (toilet, washroom, bathroom, storeroom, hobby room), such as a humidity sensor-linked ventilation device (ventilator with a humidity sensor) that turns on and off depending on the humidity in the room, a temperature sensor-linked ventilation device (ventilator with a temperature sensor) that turns on and off depending on the temperature in the room, and a timer-linked ventilation device (ventilator with a timer) that turns on and off depending on the passage of time.

[0061] After performing the process of step S20, the calculation unit 13 proceeds to step S21.

[0062] In step S21, the calculation unit 13 selects whether or not to adopt the ventilation equipment proposed in step S20. Specifically, the user can select the ventilation equipment to be installed in each room from the list displayed on the display unit 14. The calculation unit 13 determines the ventilation equipment to be installed in each room based on the user's selection.

[0063] After performing the process of step S21, the calculation unit 13 proceeds to step S22.

[0064] In step S22, the calculation unit 13 calculates a corrected total mechanical displacement Q2. Here, the "corrected total mechanical displacement" is the total mechanical displacement [m 3 / h] (the second total mechanical exhaust volume Q2 by continuous ventilation equipment and local ventilation equipment).

[0065] After performing the process of step S22, the calculation unit 13 proceeds to step S23.

[0066] In step S23, the calculation unit 13 calculates the corrected differential pressure ΔP. Here, the "corrected differential pressure ΔP" means the differential pressure (the difference between the outside air pressure and the room pressure) when the ventilation device redetermined in step S21 is installed. The differential pressure ΔP is calculated by the above-mentioned formula 3 (see step S18).

[0067] After performing the process of step S23, the calculation unit 13 proceeds to step S24.

[0068] In step S24, the calculation unit 13 determines whether the room is under excessive negative pressure. If the corrected differential pressure ΔP calculated in step S23 is less than 2 [Pa], the calculation unit 13 determines that the room is under excessive negative pressure. On the other hand, if the corrected differential pressure ΔP calculated in step S23 is not less than 2 [Pa] (is 2 [Pa] or more), the calculation unit 13 determines that the room is under excessive negative pressure.

[0069] When the calculation unit 13 determines that the room is under excessive negative pressure ("NO" in step S24), the process returns to step S20. On the other hand, when the calculation unit 13 determines that the room is not under excessive negative pressure ("YES" in step S24), the calculation unit 13 ends the ventilation device selection control shown in FIG.

[0070] As described above, in the ventilation equipment selection system 1 according to this embodiment, first, the user (designer) inputs building information and selects ventilation equipment (steps S11 to S14). Next, it is determined whether the total value of the exhaust rates of the continuous ventilation equipment satisfies the required ventilation volume (0.5 times / h) and whether the total value of the exhaust rates of the continuous ventilation equipment exceeds the upper limit for comfort (1.0 times / h) (steps S15 to S17).

[0071] Then, if the exhaust volume of the continuous ventilation equipment is appropriate (between the lower and upper limits), the indoor / outdoor pressure difference ΔP is calculated based on the combined exhaust volume of the ventilation equipment (total mechanical exhaust volume) and building information (floor area, ceiling height, airtightness, etc.) (steps S18 and S19), and if the indoor pressure becomes excessively negative, an operating method that can limit the operating time is presented, such as a ventilation equipment with a timer or a ventilation equipment with a temperature or humidity sensor, depending on the purpose of the room where each ventilation equipment is installed (steps S20 to S24).

[0072] By repeating these steps, the ventilation equipment selection system 1 can propose to the user a house that can prevent excessive negative pressure in the room. In this way, it is possible to propose to the user a house that can prevent deterioration of comfort by eliminating excessive negative pressure in the room. It is also possible to propose to the user a house that can reduce the amount of high-humidity outdoor air taken into the room in summer, and thus prevent the high-humidity outdoor air from being cooled and causing condensation.

[0073] As described above, the ventilation equipment selection system 1 according to this embodiment has the following features: A ventilation equipment selection system 1 for selecting a ventilation equipment installed in a building and capable of exhaust operation, A recording unit (operation input unit 12, calculation unit 13) records building information including the air volume of the building (step S11); A presentation unit (the calculation unit 13, the display unit 14) presents ventilation equipment that can be installed in each room of the building (step S14). A calculation unit (computation unit 13) calculates a required ventilation volume of the building based on the building information recorded by the recording unit (step S16), and calculates a total exhaust volume of the ventilation devices selected from the ventilation devices presented by the presentation unit (steps S15, S22). Equipped with The presentation unit is If the total exhaust volume is not greater than or equal to the required ventilation volume (NO in step S16), and if the total exhaust volume is not less than a ventilation volume upper limit value that is greater than the required ventilation volume (NO in step S17), a ventilation device different from the presented ventilation device is re-presented (step S14).

[0074] With this configuration, it is possible to select a ventilation device that provides an appropriate ventilation volume. Specifically, it is possible to select ventilation equipment whose total exhaust volume is equal to or greater than the required ventilation volume and less than the upper ventilation volume limit, thereby ensuring sufficient ventilation volume while preventing a decrease in comfort or excessive negative indoor pressure.

[0075] In addition, the calculation unit The total exhaust volume is set to the sum of the exhaust air volumes of the ventilation devices that perform constant ventilation among the selected ventilation devices.

[0076] With this configuration, a sufficient amount of ventilation can be ensured.

[0077] In addition, the calculation unit The pressure difference ΔP between the outside air pressure and the indoor pressure is calculated (steps S18, S23). The presentation unit is When the pressure difference ΔP is equal to or greater than a predetermined threshold value (for example, 2 [Pa]) (NO in steps S19 and S24), the ventilation appliances whose operation time can be limited are presented again (step S20).

[0078] With this configuration, the indoor pressure can be prevented from becoming excessively negative, and thus the occurrence of condensation in the summer can be suppressed.

[0079] Moreover, the presentation unit is At least one of a timer-linked ventilation appliance, a temperature sensor-linked ventilation appliance, and a humidity sensor-linked ventilation appliance is presented again as the ventilation appliance whose operation time can be limited (step S20).

[0080] With this simple configuration, the indoor pressure can be prevented from becoming an excessively negative pressure.

[0081] Although the embodiment of the present invention has been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention described in the claims.

[0082] For example, the building in which the ventilation device is installed is not limited to a house, but may be other buildings such as a department store, a shopping mall, a school, or a building.

[0083] Moreover, whether various processes, data storage, etc. are performed in the user terminal 10 or the server 20 is not limited to this embodiment and can be determined arbitrarily.

[0084] In the present embodiment, the ventilation equipment selection system 1 presents ventilation equipment, the user selects a ventilation equipment from the presented ventilation equipment, and if the selected ventilation equipment causes excessive negative pressure in the room when installed, the ventilation equipment is presented again. However, the ventilation equipment selection system 1 may automatically determine a ventilation equipment so that excessive negative pressure is not generated in the room (appropriate indoor pressure is achieved). Specifically, the ventilation equipment selection system 1 (the calculation unit 13) may automatically select a ventilation equipment from among ventilation equipment whose total exhaust volume is equal to or greater than the required ventilation volume (0.5 times / h) and less than the ventilation volume upper limit value (1.0 times / h). The ventilation equipment selection system 1 (the calculation unit 13) may automatically select a ventilation equipment from among ventilation equipment whose indoor / outdoor pressure difference ΔP (pressure difference between outdoor air pressure and indoor pressure) is less than a predetermined threshold value (2 [Pa]).

[0085] As described above, the ventilation equipment selection system 1 according to this embodiment has the following features: A ventilation equipment selection system 1 for selecting a ventilation equipment to be installed in a building, A recording unit that records building information including the air volume of the building; A selection unit that selects a ventilation device to be installed in each room of the building; Equipped with The selection unit is The ventilation equipment is selected from among the ventilation equipment whose total exhaust volume is equal to or greater than the required ventilation volume of the building calculated based on the building information recorded by the recording unit, and is less than a ventilation volume upper limit value that is greater than the required ventilation volume.

[0086] With this configuration, it is possible to select a ventilation device that provides an appropriate ventilation volume. [Explanation of symbols]

[0087] 1. Ventilation equipment selection system 12 Operation input section 13 Arithmetic section 14 Display section

Claims

1. A ventilation equipment selection system for selecting a ventilation equipment installed in a building and capable of exhaust operation, comprising: A recording unit that records building information including the air volume of the building; A presentation unit that presents ventilation devices that can be installed in each room of the building; A calculation unit that calculates a required ventilation volume of the building based on the building information recorded by the recording unit and calculates a total exhaust volume of a ventilation device selected from the ventilation devices presented by the presentation unit; Equipped with The presentation unit is When the total exhaust volume is not equal to or greater than the required ventilation volume, and when the total exhaust volume is not less than a ventilation volume upper limit value that is greater than the required ventilation volume, re-presenting a ventilation device different from the presented ventilation device. Ventilation equipment selection system.

2. The calculation unit is The total exhaust volume is set to a sum of exhaust air volumes of the ventilation devices that perform constant ventilation among the selected ventilation devices. The ventilation equipment selection system according to claim 1 .

3. The calculation unit is Calculate the pressure difference between the outside air pressure and the indoor pressure. The presentation unit is If the differential pressure is equal to or greater than a predetermined threshold, re-presenting the ventilation device whose operation time can be limited. The ventilation equipment selection system according to claim 1 .

4. The presentation unit is re-presenting at least one of a timer-linked ventilation appliance, a temperature sensor-linked ventilation appliance, or a humidity sensor-linked ventilation appliance as the ventilation appliance capable of limiting the operation time; The ventilation equipment selection system according to claim 3.

5. A ventilation equipment selection system for selecting a ventilation equipment to be installed in a building, comprising: A recording unit that records building information including the air volume of the building; A selection unit that selects a ventilation device to be installed in each room of the building; Equipped with The selection unit is selecting ventilation devices from among ventilation devices whose total exhaust volume is equal to or greater than a required ventilation volume of the building calculated based on the building information recorded by the recording unit and less than a ventilation volume upper limit value that is greater than the required ventilation volume; Ventilation equipment selection system.

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