Device update method and operation confirmation device

Abstract

This device update method comprises: a step in which an operation confirmation device (60) acquires measurement values of specification values relating to the performance of a heat exchange ventilation device (50) after device update in which a part of components is removed from a main body casing in a suspended state and an alternative component and a new additional component are attached; a step in which the operation confirmation device (60) determines whether or not the heat exchange ventilation device (50) after the device update has expected performance, on the basis of the measurement values and preset standard values of the specification values of the heat exchange ventilation device (50) after the device update; and a step in which the operation confirmation device (60) displays the determination result of whether or not the heat exchange ventilation device (50) after the device update has the performance as designed.

Description

Equipment update method and operation check device

[0001] The present disclosure relates to an equipment updating method for updating a ventilation device by replacing existing components with different components, and an operation checking device used in this equipment updating method.

[0002] Living spaces where people live, such as homes and offices, are subject to pollutants that contaminate the indoor air environment, such as carbon dioxide emitted from human breath, viruses emitted from human breath, volatile organic compounds (VOCs) emitted from building materials, odors emitted from toilets, odors emitted from kitchens, and odors emitted by animals. As a countermeasure against such pollutants, duct-type ventilation systems such as those disclosed in Patent Document 1 are used in living spaces such as homes and offices. Typically, duct-type ventilation systems are installed by hanging them from hanging bolts installed in the building and connected to ducts laid within the building.

[0003] The ventilation system performs first-class ventilation by exhausting dirty indoor air to the outside and supplying clean outdoor air into the room, and by performing total heat exchange between the exhausted indoor air and the supplied outdoor air via a heat exchanger, it is possible to purify the indoor environment through ventilation while suppressing a decrease in the indoor temperature and humidity environment and reducing the load on an air conditioner installed separately in the room.

[0004] Ventilation systems are made up of a combination of components such as a blower, heat exchanger, filter, and control circuit, but because each component deteriorates and its performance declines with use, proper maintenance and inspection are required to maintain the performance of the ventilation system. In particular, once a product's useful life has expired, components tend to malfunction due to wear and tear, and there is a shortage of parts to maintain them, making it necessary to replace existing components with new ones.

[0005] Furthermore, ventilation equipment that has been installed for a long time often has lower performance than the latest models, even if the deterioration of the components is relatively small due to infrequent use, etc. In recent years, there has been a demand to increase the amount of ventilation using mechanical ventilation to prevent the spread of viral infections, so in order to achieve both an increase in ventilation volume and energy savings, it is desirable to update the ventilation equipment even if the deterioration of the components is small.

[0006] Japanese Patent Application Laid-Open No. 2001-263752

[0007] Existing ventilation systems have ducts that form intake and exhaust air ducts according to the installation environment. Because the pressure loss in the intake and exhaust air ducts varies depending on the duct configuration, the operating points of the ventilation system's intake and exhaust fans vary depending on the installation environment. The operating point refers to the combination of static pressure and airflow volume at which the static pressure generated by the intake and exhaust fans matches the pressure of the airflow resistance, known as system impedance, which increases in proportion to the square of the airflow volume. Therefore, if an existing ventilation system is suspended from the ceiling and ducted, and the built-in fan is replaced with a new one, the operating specifications of the ventilation system, including static pressure and airflow volume, will also change depending on the installation environment. This makes it difficult to confirm whether the updated ventilation system maintains its normal specifications.

[0008] As described above, the fact that a ventilation device that has undergone equipment upgrades does not necessarily have the expected performance has caused users of ventilation devices to hesitate to upgrade their equipment.

[0009] The present disclosure has been made in consideration of the above, and aims to provide an equipment updating method that can perform equipment updates for a ventilation device so that the ventilation device after the equipment update has the expected performance.

[0010] In order to solve the above-mentioned problems and achieve the object, an equipment updating method according to the present disclosure includes a step of using an operation confirmation device to acquire measured values ​​of specification values ​​related to the performance of a post-update ventilation device in which some of the components have been removed from the main body casing while the device is suspended from a ceiling and replacement parts and newly added parts have been installed. The equipment updating method includes a step of using the operation confirmation device to determine whether the post-update ventilation device has the expected performance based on the measured values ​​and preset standard values ​​of the specification values ​​of the post-update ventilation device, and a step of using the operation confirmation device to display the determination result of whether the post-update ventilation device has the designed performance.

[0011] The equipment updating method according to the present disclosure has the effect of enabling equipment updating of a ventilation device so that the ventilation device after the equipment update has the expected performance.

[0012] FIG. 1 is a cross-sectional view of a heat exchange ventilator that is a target for equipment update by the equipment update method according to embodiment 1; FIG. 2 is a diagram showing the configuration of an operation confirmation device used in the equipment update method according to embodiment 1; FIG. 3 is a flowchart showing the process of determining whether the performance of a heat exchange ventilator after equipment update in the equipment update method according to embodiment 1 is as expected; FIG. 4 is a diagram showing an example of a blower table of the operation confirmation device used in the equipment update method according to embodiment 1; FIG. 5 is a diagram showing an example of a ventilator table of the operation confirmation device used in the equipment update method according to embodiment 1;

[0013] Hereinafter, a device updating method and an operation checking device according to an embodiment will be described in detail with reference to the accompanying drawings.

[0014] Embodiment 1. Figure 1 is a cross-sectional view of a heat exchange ventilator that is a target for equipment renewal by an equipment renewal method according to embodiment 1. In Figure 1, OA (Outdoor Air) represents outside air, SA (Supply Air) represents supply air, RA (Return Air) represents return air, and EA (Exhaust Air) represents exhaust air. Arrows in Figure 1 indicate the flow of air.

[0015] The heat exchange ventilator 50 is capable of taking in air from the air-conditioned space and discharging it outside the air-conditioned space, as well as taking in air from outside the air-conditioned space and supplying it to the air-conditioned space. The air-conditioned space is, for example, a house, a building, or a warehouse. In the following explanation, the air-conditioned space is described as being the interior of a building. Furthermore, "outside air" corresponds to the supply air supplied from the heat exchange ventilator 50 to the interior, and "indoor air" corresponds to the "exhaust air" discharged from the heat exchange ventilator 50 to the exterior.

[0016] The heat exchange ventilator 50 shown in Fig. 1 includes a rectangular parallelepiped main casing 1. The heat exchange ventilator 50 includes a total heat exchange element 4 inside the main casing 1. The heat exchange ventilator 50 is generally installed concealed inside a ceiling. The main casing 1 includes an outside air inlet 7 and an exhaust outlet 10 arranged side by side on one end surface, an air supply outlet 8 and an indoor air inlet 9 arranged side by side on the other end surface opposite the one end surface, an air supply duct 12 connecting the outside air inlet 7 and the air supply outlet 8 via the total heat exchange element 4, and an exhaust duct 11 connecting the indoor air inlet 9 and the exhaust outlet 10 via the total heat exchange element 4. The heat exchange ventilation system 50 includes an intake air blower 2 that forms an intake air flow, an exhaust air blower 3 that forms an exhaust air flow, an intake air filter 5 and an exhaust air filter 6 that reduce the intrusion of dust into the total heat exchange element 4, an indoor temperature sensor 14 that detects the indoor temperature, an outdoor temperature sensor 13 that detects the outdoor temperature, a control unit 15 that includes a control circuit 151 that controls the airflow rates of the intake air blower 2 and the exhaust air blower 3, and a remote controller 16 that is connected to the control unit 15 via a wire, is placed indoors, and issues commands to the control unit 15 and performs various settings. Hereinafter, the intake air blower 2 and the exhaust air blower 3 will be referred to as blowers 20 when referring to them interchangeably.

[0017] In the first embodiment, the airflow notches of the heat exchange ventilator 50 are of two levels: a weak notch and a strong notch. The airflow notches of the heat exchange ventilator 50 are not limited to two levels and may be of three or more levels. An airflow command value corresponding to each airflow notch is determined in advance, and when the user selects one of the airflow notches, the control unit 15 drives the control circuit 151 with the airflow command value corresponding to the selected airflow notch, thereby controlling the supply air blower 2 and the exhaust air blower 3.

[0018] 2 is a diagram showing the configuration of an operation checking device used in the equipment updating method according to embodiment 1. Operation checking device 60 includes an information acquiring unit 61, a performance determining unit 62, a table storage unit 63, a display processing unit 64, and a display unit 65. Operation checking device 60 is connected to heat exchange ventilation device 50, a vibration meter 71, and a sound level meter 72 when performing an equipment update.

[0019] The information acquiring unit 61 acquires information relating to the ventilation performance and other performance of the heat exchanger ventilator 50. The information acquired by the information acquiring unit 61 includes the motor current and motor rotation speed of each of the intake air blower motor (not shown) constituting the intake air blower 2 and the exhaust air blower motor (not shown) constituting the exhaust air blower 3, the current supplied to the heat exchanger ventilator 50, data on the power consumption of the heat exchanger ventilator 50, the vibration value and noise value of the heat exchanger ventilator 50, and the air volume command value at that time, when the heat exchanger ventilator 50 after the equipment update is test-run in a suspended state.

[0020] During the trial operation, the information acquiring unit 61 acquires vibration values ​​detected by a vibration pickup installed in advance on the heat exchange ventilation device 50 from a vibration meter 71. The information acquiring unit 61 also acquires noise values ​​from a sound level meter 72 installed in advance at a predetermined distance from the heat exchange ventilation device 50.

[0021] In addition, the user of the operation confirmation device 60 may input vibration and noise values ​​into the operation confirmation device 60 based on the measurement values ​​of the vibrometer 71 and the noise meter 72 without connecting the vibration meter 71 and the noise meter 72 to the operation confirmation device 60.

[0022] The performance determination unit 62 determines whether the performance of the heat exchange ventilator 50, which is the target of equipment update, after the equipment update is the expected ventilation performance. Here, the performance determined by the performance determination unit 62 is the static pressure P and air volume Q of the heat exchange ventilator 50. Note that the performance determined by the performance determination unit 62 may include at least one of a current value, a power value, a noise value, and a vibration value in addition to the static pressure P and air volume Q of the heat exchange ventilator 50.

[0023] The table storage unit 63 has a fan table 631 and a ventilation device table 632. The fan table 631 is a table showing the characteristics of a fan 20 that is newly installed in the heat exchange ventilation device 50 as the intake air fan 2 or the exhaust air fan 3 when the heat exchange ventilation device 50 is updated, and associates airflow command values ​​with individual specification values ​​of the fan 20 at loads corresponding to various conduit resistances. The fan table 631 includes information showing the relationship between the airflow command value, the motor current I and the motor rotation speed N, and the relationship between the static pressure P and the airflow Q at loads corresponding to various conduit resistances. The ventilation device table 632 shows the specification values ​​of the heat exchange ventilation device 50 when the heat exchange ventilation device 50 is operated at an arbitrary airflow notch.

[0024] The specification values ​​in blower table 631 include motor rotation speed N, motor current I, static pressure P, and air volume Q, and are created by measuring in advance the motor current I and motor rotation speed N of the air supply blower motor or exhaust blower motor when the air supply blower motor (not shown) constituting air supply blower 2 or the exhaust blower motor (not shown) constituting exhaust blower 3 is operated alone for each air volume command value under loads corresponding to various duct resistances, as well as the static pressure P and air volume Q generated by air supply blower 2 or exhaust blower 3 at that time. In other words, blower table 631 is data in which the air volume command value, motor current I, motor rotation speed N, static pressure P, and air volume Q are associated with each other under loads corresponding to various duct resistances.

[0025] Furthermore, by referring to the blower table 631 and the ventilation device table 632, the static pressure P and air volume Q generated by the heat exchange ventilation device 50 can be indirectly and uniformly determined based on the air volume command value and the motor rotation speed N, or based on the air volume command value and the motor current I.

[0026] The operation of performing a heat exchanger ventilator equipment update using the equipment update method according to embodiment 1 will be described. First, the user of the operation confirmation device 60 checks, based on the nameplate, whether the heat exchanger ventilator 50 for which the equipment update is to be performed is a model compatible with the equipment update method and has not yet been updated. If the heat exchanger ventilator 50 for which the equipment update is to be performed is not a model compatible with the equipment update method, or if the heat exchanger ventilator equipment has already been updated, the heat exchanger ventilator equipment update cannot be performed using the equipment update method according to embodiment 1, and the heat exchanger ventilator equipment update is therefore canceled using the equipment update method according to embodiment 1.

[0027] Next, the user of the operation checking device 60 selects and orders replacement parts to replace existing parts and new additional parts to be installed as part of the equipment upgrade. Examples of replacement parts include the intake air blower 2, exhaust air blower 3, total heat exchange element 4, and control circuit 151. However, if there are multiple new specifications that can be realized by the equipment upgrade, the user may select one of the possible new specifications and order the part to replace the existing part. If a new function is added, and the existing remote controller 16 used by the user for remote operation does not support the new function to be added, the remote controller 16 that supports the new function is also considered a replacement part. The main body casing 1 is not included in the parts to be replaced. In other words, equipment upgrades that involve replacing the main body casing 1 are not covered by the equipment upgrade method according to the first embodiment.

[0028] When replacing the control circuit 151 due to an equipment upgrade, it is possible to add a control function equivalent to that of the latest model by adding sensors that were not installed before the equipment upgrade. For example, by replacing the control circuit 151 and adding a carbon dioxide sensor and a humidity sensor, it becomes possible to control the airflow volume based on the carbon dioxide concentration and humidity.

[0029] After the ordered parts are delivered, the user of the operation confirmation device 60 installs the replacement parts and newly added parts. Because the main casing 1 is not included in the parts to be replaced and will be reused, the removal of some components from the main casing 1 and the installation of the replacement parts and newly added parts are performed while the heat exchanger / ventilator 50 remains suspended from the ceiling, without lowering it. Furthermore, the replacement work is performed while the intake air duct through which the intake air flows and the exhaust air duct through which the exhaust air flows, which are connected to the main casing 1 of the heat exchanger / ventilator 50, remain connected. For this reason, the intake air duct and the exhaust air duct are not included in the parts to be replaced and will be reused. The replacement parts and newly added parts to achieve the new specifications are attached to the main casing 1 before the equipment upgrade using attachment parts, additional screws, etc., as necessary.

[0030] Next, the user of the operation confirmation device 60 determines whether the heat exchanger ventilator 50 after the equipment upgrade has the expected performance. At this time, the user of the operation confirmation device 60 performs a trial run of the heat exchanger ventilator 50 after the equipment upgrade, with the heat exchanger ventilator 50 installed from a ceiling and with the air intake duct and exhaust duct connected. Replacement parts for existing parts and newly installed parts during the equipment upgrade are inspected before shipping. However, to prevent performance degradation of the heat exchanger ventilator 50 due to improper on-site equipment upgrade work or deterioration of parts not to be replaced, the user checks whether the performance of the heat exchanger ventilator 50 after the equipment upgrade is as expected. If the performance of the heat exchanger ventilator 50 after the equipment upgrade is not as expected, the equipment upgrade method according to the first embodiment is applied to terminate the heat exchanger ventilator upgrade. Details of the process for determining whether the performance of the heat exchanger ventilator 50 after the equipment upgrade is as expected will be described later.

[0031] If the performance of the heat exchanger ventilator 50 after the equipment upgrade is as expected, the user of the operation confirmation device 60 displays an updated status on the heat exchanger ventilator 50 for which the equipment upgrade has been completed. The updated status can be displayed by replacing the nameplate or by attaching a sticker indicating that the equipment has been upgraded to the main body casing 1. By displaying the updated status, it becomes possible to easily identify from the exterior whether the heat exchanger ventilator 50 has been upgraded, thereby improving the ease of inspection and service work after the equipment upgrade. Furthermore, if new functions become available after the equipment upgrade by replacing the control circuit 151, a sticker indicating that the equipment has been upgraded can be similarly attached to the remote controller 16, allowing the user of the heat exchanger ventilator 50 to easily recognize that the new functions are available.

[0032] Here, the details of the process of determining whether the performance of the heat exchanger ventilator 50 after equipment upgrade is as expected will be described. FIG. 3 is a flowchart showing the process of determining whether the performance of the heat exchanger ventilator after equipment upgrade is as expected in the equipment upgrade method according to embodiment 1. In step S41, the information acquisition unit 61 acquires measured values ​​of the specification values ​​of the heat exchanger ventilator 50 after equipment upgrade. For example, the information acquisition unit 61 acquires the motor current I and motor rotation speed N of the motor that drives the blower 20. The information acquisition unit 61 also acquires an airflow command value for the heat exchanger ventilator 50. The information acquisition unit 61 also acquires the current value, power value, noise value, background noise value, and vibration value of the heat exchanger ventilator 50.

[0033] In step S42, the performance determination unit 62 determines whether the updated heat exchanger ventilator 50 has the expected performance based on the information acquired by the information acquisition unit 61. The performance determination unit 62 references the fan table 631 and determines whether the supply air fan 2 and the exhaust air fan 3 are operating within a predetermined range of specifications based on the load on the site, based on whether the measured values ​​of the motor current I and motor rotation speed N at a given airflow command value fall within the ranges of the motor current I and motor rotation speed N at the corresponding airflow command value in the fan table 631. In other words, if the motor current I and motor rotation speed N are both within the specifications, the static pressure P and airflow Q required by the new specifications can be achieved by the fan 20, and the static pressure P and airflow Q of the heat exchanger ventilator 50 are determined to be within the specifications.

[0034] FIG. 4 is a diagram showing an example of a fan table of an operation checking device used in the equipment updating method according to the first embodiment. As shown in FIG. 4 , the fan table 631 includes first data 631a indicating the relationship between the motor current I and the motor rotation speed N, and second data 631b indicating the relationship between the static pressure P and the air volume Q. In the first data 631a of the fan table 631 shown in FIG. 4 , the thick solid line indicates the median value of the strong notch, the dashed-dotted line indicates the upper limit value of the strong notch, and the dashed-two-dotted line indicates the lower limit value of the strong notch. The thin solid line indicates the median value of the weak notch. Note that the upper and lower limits of the weak notch are omitted from the first data 631a. Furthermore, the upper and lower limits of both the strong notch and the weak notch are omitted from the second data 631b. If the plot of the motor current I and motor rotation speed N of the heat exchanger ventilator 50 after the equipment update is in the area sandwiched between the dashed line and the dashed line in the first data 631a, the performance evaluation unit 62 considers that the heat exchanger ventilator 50 after the equipment update is operating within the range of standard values.

[0035] If the static pressure P and airflow Q of the heat exchange ventilator 50 are within the standard range, the performance evaluation unit 62 considers the static pressure P and airflow Q corresponding to the combination of the motor current I and motor rotation speed N that fall within the standard range as the static pressure P and airflow Q of the operating point. The operating point refers to a combination of static pressure P and airflow Q at which the static pressure P generated by the heat exchange ventilator 50 matches the pressure of the airflow resistance, which increases in proportion to the square of the airflow Q, known as the system impedance. Curve AB in the second data 631b is the static pressure airflow characteristic line for the strong notch, and curve A'B' is the static pressure airflow characteristic line for the weak notch. If the load in the installation environment is represented by a dashed line, point X on the static pressure airflow characteristic line for the strong notch or point X' on the static pressure airflow characteristic line for the weak notch is set as the operating point.

[0036] It is also possible to experimentally determine and store in advance the standard deviation σI, which indicates the measurement accuracy of the motor current I, and the standard deviation σN, which indicates the measurement accuracy of the motor rotation speed N, and then convert the values ​​of the motor current I and motor rotation speed N in the standard value table using the ratio of σI to σN so that they have the same standard deviation.Then, by comparing the motor current I and motor rotation speed N actually measured on the converted table with the median of the standard values, the static pressure P and air volume Q corresponding to the motor current I and motor rotation speed N of the median of the standard values ​​that are closest in distance can be regarded as the static pressure P and air volume Q of the operating point.

[0037] Furthermore, if slight deviations in the specifications such as the current supplied to the heat exchanger ventilator 50, the power consumption of the heat exchanger ventilator 50, noise, and vibration are not significantly affected, or if it is desired to simplify processing, correction based on the ratio of σI to σN may not be performed, and the point at which a line extending either the motor rotation speed N or the current value intersects with the median of the standard values ​​may be regarded as the operating point.

[0038] The performance determination unit 62 refers to the ventilation device table 632 and finds the standard values ​​of the specification values ​​of the heat exchange ventilator 50 that correspond to the air volume Q of the estimated operating point. Then, the performance determination unit 62 compares the measured specification values ​​of the heat exchange ventilator 50 with the standard values, and determines whether the heat exchange ventilator 50 has the expected performance.

[0039] 5 is a diagram showing an example of a ventilation device table of an operation confirmation device used in the equipment updating method according to embodiment 1. The ventilation device table 632 includes first data 632a correlating noise of the heat exchange ventilator 50 with air volume Q, second data 632b correlating vibration of the heat exchange ventilator 50 with air volume Q, third data 632c correlating current supplied to the heat exchange ventilator 50 with air volume Q, and fourth data 632d correlating power consumption of the heat exchange ventilator 50 with air volume Q. In each data item of the ventilation device table 632 shown in FIG. 5, the thick solid line indicates the median of the specification value at the strong notch, the dashed-dot line indicates the upper limit of the specification value at the strong notch, and the dashed-two-dot line indicates the lower limit of the specification value at the strong notch. 5 , the performance determination unit 62 determines that the heat exchanger ventilator 50 after the equipment upgrade has the expected performance if the plot of the specification values ​​of the heat exchanger ventilator 50 is in the area between the dashed-dot line and the dashed-two-dot line for each data item in the ventilator table 632. Here, an example is shown in which the ventilator table 632 is used, in which the specification values ​​of the heat exchanger ventilator 50 are associated with the air volume Q. However, a ventilator table 632 may be used in which the static pressure P is associated with the noise, vibration, current supplied to the heat exchanger ventilator 50, and power consumption of the heat exchanger ventilator 50 instead of the air volume Q.

[0040] In step S43, the display processing unit 64 displays on the display unit 65 the determination result of whether the static pressure P and air volume Q of the heat exchange ventilator 50 are within the standard value ranges, i.e., the static pressure P and air volume Q at the operating point, and the determination result of whether the heat exchange ventilator 50 has the expected performance. The display processing unit 64 may be configured to display only the determination result of whether the static pressure P and air volume Q of the heat exchange ventilator 50 are within the standard value ranges. Alternatively, the display processing unit 64 may be configured to display on the display unit 65 the determination result of whether the static pressure P and air volume Q of the heat exchange ventilator 50 are within the standard value ranges, and the static pressure P and air volume Q at the operating point. Similarly, the display processing unit 64 displays the determination result of whether the current value, power value, noise value, and vibration value of the heat exchange ventilator 50 are within the standard value ranges.

[0041] A user of the operation checking device 60 can determine whether the performance of the heat exchange ventilator 50 after the equipment update is as expected by checking the information displayed on the display unit 65. Furthermore, a user of the operation checking device 60 can determine whether the performance other than the ventilation performance of the heat exchange ventilator 50 after the equipment update, such as the current value, power value, noise value, and vibration value, is as expected by checking the information displayed on the display unit 65.

[0042] The equipment upgrade method according to the first embodiment uses the operation confirmation device 60 to check whether the upgraded heat exchanger ventilator 50 has the expected performance during a trial run with the heat exchanger ventilator 50 installed in a ceiling-suspended state with the air intake duct and the air exhaust duct connected, thereby ensuring that the upgraded heat exchanger ventilator 50 performs as expected. Furthermore, the equipment upgrade method according to the first embodiment allows some components to be removed from the main casing 1 and replacement parts and newly added parts to be installed without lowering the heat exchanger ventilator 50, while the heat exchanger ventilator 50 is installed in a ceiling-suspended state with the air intake duct and the air exhaust duct connected, allowing the room in which the heat exchanger ventilator 50 is installed to be used even during the upgrade work. Some components can be removed from the main casing 1 and replacement parts and new additional parts can be installed without lowering the heat exchange ventilator 50, and can be installed while the heat exchange ventilator 50 is still installed suspended from the ceiling and the air intake duct and exhaust duct are still connected. This eliminates the need to lower the ceiling or reinstall the ceiling suspension bolts, and eliminates the need to secure space for these operations. Furthermore, since not only the main casing 1 but also the air intake duct and exhaust duct connected to the main casing 1 can be reused after the equipment is upgraded, there is no need to re-pipe the ducts when upgrading the heat exchange ventilator 50.

[0043] The magnitude of the load in the installation environment can be determined from the estimated static pressure P and air volume Q at the operating point of the heat exchange ventilation device 50 after the equipment upgrade. For this reason, by storing the fan table 631 of the fan 20 before the equipment upgrade, which is experimentally measured in advance, in the table storage unit 63, the static pressure P at the operating point of the fan 20 before the equipment upgrade at the same load can be calculated.ＰＲＥ , air volume Q ＰＲＥ Therefore, the display processing unit 64 can obtain the static pressure P ＰＲＥ and air volume Q ＰＲＥ and the static pressure P of the blower 20 after the equipment update ＰＯＳ and air volume Q ＰＯＳ The static pressure P of the blower 20 before the equipment update may be displayed simultaneously on the display unit 65. ＰＲＥ and air volume Q ＰＲＥ and the static pressure P of the blower 20 after the equipment update ＰＯＳ and air volume Q ＰＯＳ By simultaneously displaying these, the user of the operation checking device 60 can easily know the change in performance of the heat exchange ventilator 50 due to the equipment update.

[0044] In the above description, an example has been shown in which the operation confirmation device 60 is provided with the information acquisition unit 61, the display unit 65, the performance determination unit 62, the table storage unit 63, and the display processing unit 64. However, an inspection terminal provided with the information acquisition unit 61 and the display unit 65 and a management server provided with the performance determination unit 62, the table storage unit 63, and the display processing unit 64 may be connected to a network. In this case, information acquired by the inspection terminal is sent to the management server, which determines whether the heat exchanger ventilator 50 has the expected performance, and the management server sends the determination result to the inspection terminal, which displays the determination result indicating whether the heat exchanger ventilator 50 has the expected performance on the inspection terminal.

[0045] 6 is a diagram showing the hardware configuration of an operation checking device used in the device updating method according to Embodiment 1. The operation checking device 60 is realized by a computer system including a processor 91 that executes various processes, a memory 92 that is a main memory, and a storage device 93 that stores information.

[0046] The processor 91 may be a computing device such as an arithmetic unit, microprocessor, microcomputer, CPU (Central Processing Unit), or DSP (Digital Signal Processor). The memory 92 may be a non-volatile or volatile semiconductor memory such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable Read Only Memory), or EEPROM (Electrically Erasable Programmable Read Only Memory). The storage device 93 stores a program for executing a process to determine whether the heat exchange ventilator 50 after equipment upgrade has the expected performance.

[0047] The computer system described above realizes the functions of the operation checking device 60 by having the processor 91 read into the memory 92 programs stored in the storage device 93 and corresponding to the processing of each component, and execute the programs. The memory 92 is also used as a temporary memory for each process executed by the processor 91. The programs executed by the processor 91 may be provided in a state stored in a storage medium, or may be provided via a network.

[0048] Although the first embodiment has been described as an example of updating a heat exchange ventilator 50, the target of the equipment updating method may be any ventilation device to which a duct is connected, and it is also possible to implement the equipment updating method on a ventilation device that only ventilates without performing heat exchange. Furthermore, in the first embodiment, an example has been shown in which the noise measurement value during trial operation is used as the noise value as is, but it is also possible to use an actual noise value that eliminates the influence of background noise, which is noise from the surrounding environment, by measuring the noise value during trial operation and the background noise value when operation is stopped, and calculating the actual noise value by subtracting the background noise value from the noise value during trial operation.

[0049] The configurations shown in the above embodiments are merely examples of the content, and may be combined with other known technologies, or parts of the configurations may be omitted or modified without departing from the spirit of the invention.

[0050] 1 Main body casing, 2 Intake air blower, 3 Exhaust air blower, 4 Total heat exchange element, 5 Intake air filter, 6 Exhaust filter, 7 Outdoor air intake port, 8 Intake air outlet, 9 Indoor air intake port, 10 Exhaust air outlet, 11 Exhaust air duct, 12 Intake air duct, 13 Outdoor temperature sensor, 14 Indoor temperature sensor, 15 Control unit, 16 Remote controller, 20 Blower, 50 Heat exchange ventilation device, 60 Operation confirmation device, 61 Information acquisition unit, 62 Performance determination unit, 63 Table storage unit, 64 Display processing unit, 65 Display unit, 71 Vibration meter, 72 Sound level meter, 91 Processor, 92 Memory, 93 Storage device, 151 Control circuit, 631 Blower table, 631a, 632a First data, 631b, 632b Second data, 632 Ventilation device table, 632c Third data, 632d Fourth data.

Claims

1. An equipment update method comprising the steps of: an operation confirmation device acquiring measured values ​​of specification values ​​relating to the performance of a ventilator after an equipment update in which some of the components have been removed from the main casing while the ventilator is installed suspended from a ceiling and replacement parts and newly added parts have been installed; a step in which the operation confirmation device determines whether the ventilator after the equipment update has the expected performance based on the measured values ​​and predetermined standard values ​​of the specification values ​​of the ventilator after the equipment update; and a step in which the operation confirmation device displays the determination result of whether the ventilator after the equipment update has the designed performance.

2. The measured values ​​include the static pressure and air volume generated by the ventilation device after the equipment update, and the operation confirmation device pre-stores a blower table including information indicating the relationship between the motor current and motor rotation speed of a motor that constitutes a blower provided in the ventilation device, and information indicating the relationship between the static pressure and air volume generated by the ventilation device, and the static pressure and air volume generated by the ventilation device obtained using the blower table based on the motor current and motor rotation speed obtained from the ventilation device are compared with the standard values ​​to determine whether the ventilation device after the equipment update has the expected performance. The equipment update method described in claim 1, characterized in that 3. The equipment updating method according to claim 2, further comprising determining whether or not at least one of a current value, a power value, a noise value and a vibration value of the ventilation device is within a range of a standard value.

4. An operation confirmation device comprising: an information acquisition unit that acquires measurement values ​​of specifications relating to the performance of a ventilation device after an equipment update in which some of the components have been removed from the main casing while installed suspended from a ceiling and replacement parts and newly added parts have been installed; a performance determination unit that determines whether the ventilation device after the equipment update has the expected performance based on the measurement values ​​and predetermined standard values ​​of the specifications of the ventilation device after the equipment update; and a display processing unit that performs processing to display the determination result of whether the ventilation device after the equipment update has the designed performance.

5. The measurement values ​​include the static pressure and air volume generated by the ventilation device after the equipment update, and the operation confirmation device pre-stores a blower table including information indicating the relationship between the motor current and motor rotation speed of a motor that constitutes a blower provided in the ventilation device, and information indicating the relationship between the static pressure and air volume generated by the ventilation device, and the operation confirmation device as described in claim 4 determines whether the ventilation device after the equipment update has the expected performance by comparing the static pressure and air volume generated by the ventilation device after the equipment update obtained using the blower table based on the motor current and motor rotation speed obtained from the ventilation device with the standard values.

6. An operation confirmation device according to claim 5, characterized in that it determines whether or not at least one of the current value, power value, noise value and vibration value of the ventilation device is within the range of a standard value.