Ventilation system and work environment improvement method

Abstract

To provide a low-cost ventilation system and a working environment maintenance method suitable for lowering the temperature of a working environment of repair work or the like while staying.SOLUTION: In a building 10 including a service space 12 inside a repair work range, a work space 14 provided close to the service space 12, and a partition wall 16 partitioning the service space 12 and the work space 14, a system 100 ventilates the work space 14. A ventilation fan 22 is provided at a high place of the working space 14 to discharge air in the working space 14 to the outside and connected to ventilation equipment 26 laid in the building 10, and an air supply port 24 is provided at a low place of the partition wall 16 to supply air in the service space 12 to the working space 14 and communicates the service space 12 with the working space 14.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a ventilation system and a work environment improvement method suitable for improving the work environment during renovation work or the like while the worker is still inside. [Background technology]

[0002] Conventionally, so-called "renovation work while occupants are occupied" has been known, in which renovation work is carried out while the building functions are in use. During such renovation work, the area being renovated can become very hot, especially in the summer. This is because the air conditioning equipment within the renovation work area is often renovated, which naturally results in a rise in temperature within the renovation work area. The rise in temperature within the renovation work area can lead to health problems and accidents, including heatstroke, especially in the summer. A technology for assessing the risk of heatstroke within a work area is known, for example, as described in Patent Document 1.

[0003] In order to mitigate rising temperatures and improve the working environment, temporary cooling equipment 3 (such as spot coolers) and fans 4 for stirring the air are often installed in the renovation work area 2 within building 1, as shown in Figure 4. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-23534 Summary of the Invention [Problem to be solved by the invention]

[0005] However, because the area cooled by the air conditioner and the area exposed to the wind from the fan are limited to the area around each device, several air conditioners and fans will be required within the renovation work area.If the renovation work area is large, the number of devices will increase, which could result in higher equipment costs.

[0006] Additionally, temporary air conditioning equipment installed within the renovation work area requires drainage treatment to remove moisture from the air. This requires the installation of drainage pipes to drain the water, as well as waterproofing the equipment surface, such as installing a drain pan underneath the equipment. This increases the cost of drainage treatment.

[0007] Furthermore, temporary air conditioning equipment must send cool air into the renovation work area while also exhausting the air within the renovation work area, which means that cool air is obtained near the air conditioning equipment within the renovation work area, and warm air is similarly exhausted near the air conditioning equipment, and while cool air can be obtained only around the cool air outlet of the air conditioning equipment, the temperature throughout the renovation work area does not become a relatively cool environment.

[0008] In addition, the method of generating air currents by stirring the air within the renovation work area with the wind power of a fan or other device does not have the effect of lowering the humidity or temperature of the air being stirred in the first place; it merely stirs the air that is generated within the renovation work area.While the temperature perceived by workers exposed to the wind from the fan may decrease, it does not improve the working environment.

[0009] The present invention has been made in consideration of the above, and aims to provide a low-cost ventilation system and a work environment improvement method that are suitable for lowering the temperature in a work environment, such as during renovation work, while the user is still present. [Means for solving the problem]

[0010] In order to solve the above-mentioned problems and achieve the objectives, the ventilation system of the present invention is a system for ventilating a work space in a building that has a common space within the renovation work area, a work space located close to the common space, and a partition wall separating the common space from the work space, and is characterized by having a ventilation fan located at a high point in the work space to exhaust air from the work space to the outside, and connected to ventilation equipment installed in the building, and an air intake port located at a low point in the partition wall to supply air from the common space to the work space, and connecting the common space to the work space.

[0011] Furthermore, another ventilation system according to the present invention is characterized in that, in the above-mentioned invention, it further comprises a temperature sensor that detects the temperature at a high or even higher location in the work space where the ventilation fan is installed, and a control device that controls the ventilation fan based on the temperature detected by the temperature sensor.

[0012] In addition, the work environment improvement method of the present invention is a method for improving the work environment of a work space located inside a building and adjacent to a common space, and includes the steps of installing a partition wall between the common space and the work space, installing a ventilation fan at a high point in the work space and connecting the ventilation fan to ventilation equipment installed in the building, installing an air intake at a low point in the partition wall that connects the common space and the work space, and then starting the ventilation fan and discharging the air in the work space to the outside, and is characterized in that the air in the work area is cooled by circulating air within the renovation work area.

[0013] Another work environment improvement method according to the present invention is characterized in that, in the above-mentioned invention, it further comprises the steps of providing a temperature sensor to detect the temperature at a high or even higher location in the work space where the ventilation fan is provided, and controlling the ventilation fan based on the temperature detected by the temperature sensor. [Effects of the Invention]

[0014] The ventilation system of the present invention provides ventilation for a work space in a building that includes a shared space within a renovation project, a work space adjacent to the shared space, and a partition wall separating the shared space from the work space. The system includes a ventilation fan installed at a high elevation above the work space to exhaust air from the work space to the outside and connected to ventilation equipment installed in the building, and an air intake port installed at a low elevation above the partition wall to supply air from the shared space to the work space, connecting the shared space to the work space. When the ventilation fan is activated, cooled air from the shared space flows into the work space through the air intake port, lowering the temperature in the work space. This eliminates the need for multiple temporary air conditioners or fans, and eliminates the need for wastewater treatment for the air conditioners, thereby reducing the costs and labor associated with these. This system thus provides a low-cost ventilation system ideal for lowering the temperature of a work environment, such as during renovation work, while still allowing residents to remain inside.

[0015] In addition, another ventilation system according to the present invention further includes a temperature sensor that detects the temperature at a high or even higher point in the work space where the ventilation fan is installed, and a control device that controls the ventilation fan based on the temperature detected by the temperature sensor.This has the effect of reducing power consumption, for example, by activating the ventilation fan only when the temperature in the work space is high.

[0016] The present invention also provides a work environment improvement method for improving the work environment of a work space located adjacent to a shared space within a building. The method includes the steps of: installing a partition wall between the shared space and the work space; installing a ventilation fan at a high point in the work space and connecting the ventilation fan to a ventilation system installed in the building; installing an air intake port at a low point in the partition wall that connects the shared space and the work space; and then activating the ventilation fan to exhaust air from the work space to the outside. The air in the work area is cooled by circulating air within the renovation work area. When the ventilation fan is activated, cooled air from the shared space flows into the work space through the air intake port, lowering the temperature in the work space. This eliminates the need for multiple temporary air conditioners or fans, and eliminates the need for wastewater treatment for the air conditioners, thereby reducing the costs and labor associated with these. This method therefore provides a low-cost work environment improvement method suitable for lowering the temperature of a work environment, such as during renovation work, while still allowing residents to remain inside.

[0017] In addition, another work environment improvement method according to the present invention further includes a step of providing a temperature sensor that detects the temperature at a high or even higher location in the work space where the ventilation fan is provided, and a step of controlling the ventilation fan based on the temperature detected by the temperature sensor.This has the effect of reducing power consumption, for example, by activating the ventilation fan only when the temperature in the work space is high. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is a schematic diagram showing a ventilation system and a working environment improving method according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a circuit block diagram of a control panel according to an embodiment of the present invention. [Figure 3] FIG. 3 is a schematic diagram showing a second embodiment of the ventilation system and the working environment improving method according to the present invention. [Figure 4] FIG. 4 is a schematic diagram showing an example of a conventional ventilation system. DETAILED DESCRIPTION OF THE INVENTION

[0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A ventilation system and a working environment improvement method according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] (Embodiment 1) First, a first embodiment of the present invention will be described. As shown in FIG. 1, on the same floor of an existing building 10, there is a common space 12 that is used by building users, and a work space 14 adjacent (close to) the common space 12 on the side. A partition wall 16 is provided between the common space 12 and the work space 14, and the common space 12 and the work space 14 are separated by this partition wall 16. The partition wall 16 may be an existing wall attached to the building 10, or may be a type that is temporarily installed during construction using a base material and boards, etc. In the first embodiment, it is assumed that the air conditioning equipment 20 on the ceiling surface 18 of the work space 14 is renovated through renovation work while the occupants are still present.

[0021] The ventilation system 100 according to the first embodiment is a system for ventilating the work space 14, and includes a ventilation fan 22 and an air intake port .

[0022] The ventilation fan 22 is temporarily installed at a high point in the work space 14 to exhaust air from the work space 14 to the outside and is removed after construction is completed. The ventilation fan 22 is connected via a temporary duct 28 to the ventilation duct and piping 26 of the existing ventilation equipment installed in the building 10. The ventilation fan 22 is preferably installed near the floor 30 of the floor immediately above the floor to be renovated after the ceiling surface 18 and the air conditioning equipment 20 are demolished (for example, the new ceiling surface 32 formed by demolishing the ceiling surface 18). The ventilation fan 22 is equipped with a filter (not shown) to remove dust and dirt from the air drawn in by the ventilation fan 22. The ventilation fan 22 has a necessary and sufficient ventilation capacity for the volume of the work space 14. To ensure sufficient ventilation capacity, the number of ventilation fans 22 may be increased, or fans with higher ventilation capacity may be used instead of increasing the number of fans. By ventilating (exhausting) the workspace 14 through the ventilation fan 22, the air pressure in the workspace 14 becomes negative compared to the rest of the building 10.

[0023] The air intake 24 is used for natural ventilation to introduce (supply) air from the shared space 12 to the work space 14. The air intake 24 is located at a low point on the partition wall 16 near the floor surface 34 of the corresponding floor, connecting the shared space 12 and the work space 14. It is desirable to locate the air intake 24 as low as possible and away from the high-placed ventilation fan 22. Like the ventilation fan 22, the air intake 24 has the necessary and sufficient air supply (ventilation) capacity for the volume of the work space 14. To ensure sufficient air supply capacity, the number of air intake vents 24 may be increased, or a structure with higher air supply capacity may be used instead of increasing the number of intake vents 24. The air intake vents 24 may be equipped with an on-off valve to adjust the air supply capacity. Naturally, the air conditioning and other equipment in the shared space 12 are functional, regardless of whether renovation work is underway or not. Therefore, low-temperature air (cold air) cooled by the air conditioning equipment is present in the shared space 12. By opening the air intake 24, cool air from the common space 12 can be introduced into the negative pressure work space 14.

[0024] The operation and function of the above configuration will now be described. When the ventilation fan 22 is activated, the air in the work space 14 becomes negative pressure. As a result, cool air from the common space 12 flows into the work space 14 through the air intake 24, lowering the temperature in the work space 14. Hot air accumulates in the upper part of the work space 14, but this hot air is exhausted to the outside by the high-altitude ventilation fan 22. Cool air circulates in the work space below the ceiling surface 32.

[0025] As described above, according to the first embodiment, cool air from the shared space 12 side is taken in through the low-placed air intake vent 24, and the air in the work space 14 is forcibly discharged to the outside. Because the cool air taken in from the shared space 12 side circulates in the work space 14, the temperature throughout the work space 14 can be lowered evenly. Therefore, according to the first embodiment, there is no need to install multiple temporary air conditioners and fans in the work space 14 as in the past, and there is no need for drainage treatment such as installing drain pans under each air conditioner, which reduces the costs and labor involved. Therefore, it is possible to provide a low-cost ventilation system that is suitable for lowering the temperature of a work environment, such as during renovation work, while remaining inside the work space.

[0026] In the first embodiment described above, the temperature in higher areas of the workspace 14 is higher than that in lower areas. Therefore, a temperature sensor 36 may be installed at or above the location where the ventilation fan 22 is installed to detect the temperature in the hotter areas of the workspace 14 and control the ventilation fan 22 based on this temperature. This configuration is also illustrated in FIG. 1 . As shown in this figure, the ventilation fan 22 and the temperature sensor 36 are connected to a control panel 38 incorporating a control device. The control panel 38 receives signals indicating the operating status of the ventilation fan 22 and the detected value of the temperature sensor 36, and also transmits signals to control the ventilation fan 22 based on the detected value of the temperature sensor 36. The control panel 38 can also transmit the received signals to an external terminal (not shown) via a wireless or wired communication line. Users of the ventilation system 100 can obtain the operating status of the ventilation fan 22 and the detected value of the temperature sensor 36 in real time via this terminal.

[0027] 2, when the temperature detected by the temperature sensor 36 is equal to or higher than a predetermined threshold, the control panel 38 sends an ON signal to the ventilation fan 22 as a high temperature processing, thereby starting the ventilation fan 22. On the other hand, when the temperature detected by the temperature sensor 36 is lower than the threshold, the control panel 38 sends an OFF signal to the ventilation fan 22 as a low temperature processing, thereby stopping the operation of the ventilation fan 22. In this way, by starting the ventilation fan 22 only when the temperature of the workspace 14 is relatively high, it is possible to reduce power consumption.

[0028] Next, a work environment improvement method according to the first embodiment will be described. The work environment improvement method of the first embodiment is a method for improving the work environment of a work space 14 provided adjacent to a shared space 12 inside a building 10, and can be performed by the following procedure.

[0029] First, a partition wall 16 is provided between the common space 12 and the work space 14. An air intake port 24 that connects the common space 12 and the work space 14 is provided at a low point of the partition wall 16. On the other hand, a ventilation fan 22 is provided at a high position in the work space 14 and is connected to a ventilation duct or pipe 26 of a ventilation facility installed in the building 10.

[0030] Thereafter, the ventilation fan 22 is started to exhaust the air in the work space 14 to the outside. When the ventilation fan 22 is started, the cooled air in the shared space 12 flows into the work space 14 through the air intake port 24, and the temperature of the work space 14 drops.

[0031] According to the first embodiment, there is no need to install multiple temporary air conditioners or electric fans in the work space 14 as in the past, and there is no need to treat the drainage water from the air conditioners, so the costs and labor involved can be reduced. Therefore, it is possible to provide a low-cost work environment improvement method that is suitable for lowering the temperature of the work environment while remaining inside, such as during renovation work.

[0032] (Embodiment 2) Next, a second embodiment of the present invention will be described. In this second embodiment, the present invention is applied to the period from the completion of the renovation work described in the first embodiment above (renovation work on the ceiling air conditioning equipment 20A, building finishing work) until the equipment is put into trial operation.

[0033] As shown in Fig. 3, a ventilation system 200 according to the second embodiment includes a ventilation fan 22 and an air intake port 24. The ventilation fan 22 is the ventilation fan 22 of the first embodiment described above, which has been relocated to the position of the ceiling inspection hatch on the finished ceiling surface 40. The renovated air conditioning equipment 20A placed above the finished ceiling surface 40 is connected to the ventilation duct and piping 26 of the existing ventilation equipment via a duct 28A. The air intake port 24 has the same configuration as in the first embodiment described above.

[0034] The operation and function of the above configuration will now be described. When the ventilation fan 22 is activated, the air in the work space 14 below the finished ceiling surface 40 that is sucked in by the ventilation fan 22 is exhausted into the ceiling pocket interior 42. Because the work space 14 and the ceiling pocket interior 42 are separated by the finishing material that makes up the finished ceiling surface 40, the work space 14 is maintained at a negative pressure by the exhaust air from the ventilation fan 22. As a result, cool air from the common space 12 flows into the work space 14 through the air intake vents 24, lowering the temperature of the work space 14. Hot air accumulates in the upper part of the work space 14, but this hot air is exhausted into the ceiling pocket interior 42 by the ventilation fan 22. The hot air remains in the ceiling pocket interior 42, and cool air circulates through the work space 14 below the finished ceiling surface 40. In this way, the second embodiment can also achieve the same effects as the first embodiment.

[0035] In particular, compared to the period from after the ceiling is demolished until finishing is completed, when the exhaust air from the ventilation fan 22 is sent outside (corresponding to embodiment 1), during the period when the ventilation fan 22 is installed in the ceiling inspection hatch during finishing work (corresponding to embodiment 2), the work space 14 below the ceiling finish surface 40 is kept cool. In addition, the air exhausted into the ceiling pocket 42 is also cooled by the air exhausted from the work space 14. Therefore, maintenance work inside the ceiling, such as equipment trial operation work, can be carried out in a cooled environment.

[0036] As described above, the ventilation system of the present invention provides ventilation for a work space in a building that includes a shared space within a renovation project, a work space adjacent to the shared space, and a partition wall separating the shared space from the work space. The system includes a ventilation fan installed at a high elevation above the work space and connected to ventilation equipment installed in the building to exhaust air from the work space to the outside, and an air intake port installed at a low elevation above the partition wall to supply air from the shared space to the work space, connecting the shared space to the work space. When the ventilation fan is activated, cooled air from the shared space flows into the work space through the air intake port, lowering the temperature in the work space. This eliminates the need for multiple temporary air conditioners or fans, and eliminates the need for wastewater treatment for the air conditioners, thereby reducing the costs and labor associated with these. This provides a low-cost ventilation system ideal for lowering the temperature in a work environment, such as during renovation work, while still allowing residents to remain inside.

[0037] In addition, another ventilation system according to the present invention further includes a temperature sensor that detects the temperature at a high or even higher point in the work space where the ventilation fan is installed, and a control device that controls the ventilation fan based on the temperature detected by the temperature sensor.Therefore, for example, by activating the ventilation fan only when the temperature in the work space is high, it is possible to reduce power consumption.

[0038] The present invention also provides a work environment improvement method for improving the work environment of a work space located adjacent to a shared space within a building. The method includes the steps of: installing a partition wall between the shared space and the work space; installing a ventilation fan at a high point in the work space and connecting the ventilation fan to a ventilation system installed in the building; installing an air intake port at a low point in the partition wall that connects the shared space to the work space; and then activating the ventilation fan and discharging air from the work space to the outside. The air in the work area is cooled by circulating air within the renovation work area. When the ventilation fan is activated, cooled air from the shared space flows into the work space through the air intake port, lowering the temperature in the work space. This method eliminates the need for multiple temporary air conditioners or fans, and eliminates the need for wastewater treatment from the air conditioners, thereby reducing the costs and labor associated with these. This provides a low-cost work environment improvement method that is ideal for lowering the temperature of a work environment, such as during renovation work, while still allowing residents to remain inside.

[0039] Furthermore, another work environment improvement method according to the present invention further includes the steps of providing a temperature sensor to detect the temperature at a high or even higher location in the work space where the ventilation fan is provided, and controlling the ventilation fan based on the temperature detected by the temperature sensor.Therefore, for example, by activating the ventilation fan only when the temperature in the work space is high, it is possible to reduce power consumption.

[0040] The Sustainable Development Goals (SDGs) are 17 international goals adopted at the United Nations Summit in September 2015. The ventilation system and work environment improvement method according to this embodiment can contribute to achieving one of the 17 SDGs, for example, goal 12, "Responsible Consumption and Production." [Industrial Applicability]

[0041] As described above, the ventilation system and work environment improvement method according to the present invention are useful for lowering the temperature of a work environment, such as during renovation work, while the worker is still present, and are particularly suitable for improving the work environment at low cost. [Explanation of symbols]

[0042] 10 Building 12 Public space 14. Workspace 16 Partition Wall 22 Ventilation fan 24 Air supply port 26 Piping (Ventilation equipment) 36 Temperature Sensor 38 Control panel (control device) 100,200 Ventilation system

Claims

1. A system for ventilating a work space in a building having a shared space within a renovation work area, a work space provided adjacent to the shared space, and a partition wall separating the shared space and the work space, a ventilation fan provided at a high position in the work space to exhaust air from the work space to the outside and connected to a ventilation facility installed in the building; A ventilation system characterized by having an air intake port located at a low part of the partition wall to supply air from the common space to the work space, and connecting the common space and the work space.

2. The ventilation system described in claim 1, further comprising a temperature sensor that detects the temperature at a high or even higher location in the work space in which the ventilation fan is installed, and a control device that controls the ventilation fan based on the temperature detected by the temperature sensor.

3. A method for improving the working environment of a work space provided adjacent to a shared space inside a building, comprising: providing a partition wall between the common space and the work space; providing a ventilation fan at a high position in the work space and connecting the ventilation fan to a ventilation facility installed in the building; providing an air intake port at a low position of the partition wall, the air intake port communicating the common space and the work space; This work environment improvement method then includes a step of starting the ventilation fan and discharging the air in the work space to the outside, thereby cooling the air in the work area by circulating air within the renovation work area.

4. The method for improving a work environment as described in claim 3, further comprising the steps of: providing a temperature sensor to detect the temperature at a high or even higher location in the work space where the ventilation fan is provided; and controlling the ventilation fan based on the temperature detected by the temperature sensor.

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