Arrangement structure of temporary toilet

Abstract

To provide an arrangement structure of a temporary toilet capable of effectively adjusting a room temperature of a toilet space with a simple structure.SOLUTION: In an arrangement structure of a temporary toilet 10 arranged in the vicinity of a unit house 20 having air conditioning means 30 for heating or cooling indoor air and an air blowing port 24 for communicating the inside and outside of a room, an upper air supply port 14 and the air blowing port 24 provided in a wall part 12 of the temporary toilet 10 are connected by an air supply duct 40, and air blowing means 25 for sending the indoor air of the unit house 20 into the temporary toilet 10 is provided in at least one of the unit house 20, the temporary toilet 10 and the air supply duct 40, the air blowing means 25 is operated, and the indoor air of the unit house 20 that is adjusted in temperature by the air conditioning means 30 is sent into the temporary toilet 10.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a layout structure for temporary toilets arranged near modular houses. [Background technology]

[0002] Modular houses are simple structures that are widely used as temporary offices or stores at construction sites, event venues, etc. Modular houses have a simple structure and are easy to set up, but the indoor temperature is easily affected by the outside temperature. In particular, in recent years, summer temperatures have risen significantly due to global warming, increasing the risk of heatstroke, so it is common for modular houses to be equipped with air conditioners.

[0003] Many temporary modular houses do not have toilet facilities, so outdoor temporary toilets are often installed separately from the modular houses. These portable toilets are often used, with a single-person toilet space inside a box and a waste tank at the bottom.

[0004] Although single-person portable toilets are inexpensive and easy to install, they have the problem of insufficient temperature control. Especially in outdoor portable toilets during extreme heat, heat tends to build up inside, creating a strong odor. Portable toilets are also installed at event venues and disaster evacuation centers, and are used by elderly people and children who have a low tolerance for heat. For this reason, proper temperature control in the toilet space is essential.

[0005] Various proposals have been made to combat the heat in temporary toilets. Patent Document 1 describes attaching an air-cooled packaged air conditioner to the side wall of an outdoor temporary toilet. Patent Document 2 describes attaching an intake fan that draws outside air into the room and a solar panel that supplies power to drive the intake fan to a portable simple toilet.

[0006] However, the temporary toilet described in Patent Document 1 is expensive because each temporary toilet requires its own dedicated air conditioner. Also, the portable toilet described in Patent Document 2 introduces hot outside air into the room, which is insufficient to lower the room temperature.

[0007] Furthermore, the inventions described in Patent Documents 1 and 2 do not allow for temperature control of the toilet space in winter. During severe winter, it is desirable to heat the toilet space from the perspective of improving comfort and reducing health risks caused by the temperature difference with a warm living space. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Japanese Utility Model Application Publication No. 7-25076 [Patent Document 2] Japanese Patent Application Laid-Open No. 2006-57417 Summary of the Invention [Problem to be solved by the invention]

[0009] An object of the present invention is to solve the above-mentioned conventional problems and to provide a layout structure for a temporary toilet that can effectively adjust the room temperature of the toilet space with a simple structure. [Means for solving the problem]

[0010] In order to solve the above problems, the temporary toilet is arranged near a unit house equipped with an air conditioning means for heating or cooling indoor air and an air outlet that connects the inside and outside of the room, wherein the temporary toilet has a floor portion equipped with a toilet bowl, a wall portion erected from the floor portion so as to surround the toilet bowl, a ceiling portion covering the upper part of the wall portion, and an upper air intake port provided at the top of the wall portion, the upper air intake port and the air outlet being connected by an air intake duct, and at least one of the unit house, the temporary toilet, or the air intake duct is provided with air blowing means that sends indoor air from the unit house into the temporary toilet, and the air blowing means is operated to send indoor air from the unit house that has been adjusted in temperature by the air conditioning means into the temporary toilet.

[0011] It is also preferable that the air blowing means includes an exhaust air blowing fan provided at the air outlet of the modular house.

[0012] It is also preferable that the air blowing means includes an air supply fan provided in the upper air supply port of the temporary toilet.

[0013] It is also preferable that the air blowing means includes a blower fan provided in the middle of the air supply duct.

[0014] Furthermore, it is preferable that the air outlet comprises an upper air outlet opening at the top of one of the exterior walls of the unit house and a lower air outlet opening at the bottom of the exterior wall, and that when the temperature is low, the upper exhaust air outlet fan provided at the upper air outlet is operated to send warm indoor air into the temporary toilet, and when the temperature is high, the lower exhaust air outlet fan provided at the lower air outlet is operated to send cool indoor air into the temporary toilet. [Effects of the Invention]

[0015] The present invention makes it possible to provide a temporary toilet arrangement structure that can effectively adjust the room temperature in the toilet space with a simple structure. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a perspective view schematically showing the layout structure of temporary toilets in a first embodiment. [Figure 2] FIG. 2 is a plan view schematically showing the arrangement structure shown in FIG. [Figure 3] FIG. 10 is a perspective view showing the layout structure of temporary toilets in a second embodiment. [Figure 4] FIG. 4 is a plan cross-sectional view schematically showing the arrangement structure shown in FIG. 3. [Figure 5] FIG. 4 is a front cross-sectional view schematically showing the temporary toilet shown in FIG. 3. [Figure 6] FIG. 10 is a plan view schematically showing the layout structure of temporary toilets in the third embodiment. [Figure 7] FIG. 10 is a perspective view schematically showing the layout structure of temporary toilets in a fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0017] The following describes an embodiment of the invention. In this specification, as shown in Figure 1, the floor side of the temporary toilet 10 is the lower side of the temporary toilet 10, and the ceiling side is the upper side. Furthermore, the side of the temporary toilet 10 where the door 12e is provided is the front side of the temporary toilet 10, and the opposite side is the rear side. Furthermore, the right side when viewing the temporary toilet 10 from the front is the right side of the temporary toilet 10, and the opposite side is the left side.

[0018] (First embodiment) A first embodiment of the present invention will be described below with reference to FIGS.

[0019] (portable toilet) As shown in Figure 1, the temporary toilet 10 of the first embodiment has a waste tank T at the bottom. A floor panel 11, which is a floor portion equipped with a toilet bowl TB, is provided above the waste tank T. This floor panel 11, a wall portion 12 erected from the floor panel 11 so as to surround the toilet bowl TB, and a roof panel 13, which is a ceiling portion covering the upper part of the wall portion 12, form a private room as a toilet space.

[0020] 1 and 2, the wall portion 12 of the embodiment is composed of a front panel 12a on the front side, a back panel 12b on the rear side, a right side panel 12c on the right side, and a left side panel 12d on the left side. The front panel 12a is provided with a single-wing door 12e.

[0021] The temporary toilet 10 of this embodiment is provided with an upper air intake port 14 at the top of the wall portion 12. The upper air intake port 14 is a hole to which an air intake duct 40, which will be described later, is connected, and is a circular opening in the example shown in Fig. 1. Note that, although the upper air intake port 14 is provided in the right side panel 12c in this example, the upper air intake port 14 may also be provided in the back panel 12b or the left side panel 12d.

[0022] In this embodiment, a louver 15 is attached to the upper air intake 14 on the toilet space side. The louver 15 in the example shown in Figure 1 is a member having a rectangular outer frame and multiple blades. There are no restrictions on the shape of the louver 15, but it is preferable if the orientation of the blades can be adjusted so that the airflow direction can be adjusted. Because odors in the temporary toilet 10 rise from below, it is preferable to blow cool or warm air downward from the upper air intake 14.

[0023] Furthermore, it is preferable to use louvers 15 that can close the gaps between the slats by adjusting the orientation of the slats. This makes it possible to, for example, close the upper air intake port 14 when the portable toilet 10 is not in use for an extended period of time, thereby preventing odors from flowing from the toilet space toward the air intake duct 40 and the unit house 20, which will be described later. Note that the louvers 15 may also be provided with a shutter member that closes the upper air intake port 14, a filter member for collecting dust, and the like.

[0024] It is preferable that a ventilation opening be provided in the wall portion 12 in addition to the upper air supply opening 14. In the temporary toilet 10 of this embodiment, a ventilation louver (not shown) is provided as a ventilation opening in the left side panel 12d.

[0025] 1 is a simple flush toilet equipped with a flushing tank and foot pump (not shown), but is not limited to this configuration. The structure of the toilet equipment, such as the toilet bowl BT, waste tank T, and flushing tank, is not essential to the present invention, and therefore will not be described here.

[0026] (modular house) 1 and 2, the temporary toilet 10 is placed near the unit house 20. In this example, the temporary toilet 10 is placed to the side of the unit house 20, but this is not limiting. For example, the temporary toilet 10 may be placed behind the unit house 20.

[0027] 1 and 2 has a generally rectangular parallelepiped shape and includes a floor 21, walls 22, and a ceiling 23. The walls 22 in this example are made up of four sides: a front wall 22a, a rear wall 22b, a right wall 22c, and a left wall 22d, and an entrance 22e is provided in the front wall 22a.

[0028] The unit house 20 is provided with air conditioning means 30 that heats or cools indoor air. The air conditioning means 30 in the example shown in Figures 1 and 2 is a heating and cooling air conditioner attached to the right side wall 22c, and includes an indoor unit 31, an outdoor unit 32, and piping 33 connecting these. The air conditioning means 30 is not particularly limited as long as it is capable of air conditioning (heating and cooling), and may be, for example, a cooling-only air conditioner or a kerosene stove.

[0029] In the unit house 20 of the embodiment, an air outlet 24, which is a through-hole that connects the inside and outside of the room, is provided in the wall portion 22. In the example shown in Figures 1 and 2, the air outlet 24 is provided in the upper part of the left wall 22d facing the right side panel 12c of the temporary toilet 10, but is not limited to this.

[0030] The air outlet 24 in this embodiment is provided with an exhaust air blower fan 25 that blows indoor air from the air outlet 24 to the outdoors. The exhaust air blower fan 25 in the example shown in FIGS. 1 and 2 is an outdoor exhaust type ventilation fan attached to the indoor side of the unit house 24. The shape and structure of the exhaust air blower fan 25 are not particularly limited as long as it can blow indoor air to the outdoors. For example, the exhaust air blower fan 25 may be attached to the outdoor side of the air outlet 24. In this embodiment, the exhaust air blower fan 25 functions as a blower means that blows indoor air from the unit house 20 into the temporary toilet 10.

[0031] A backwind prevention damper may also be provided in the air outlet 24. If the air outlet 24 can be blocked by the backwind prevention damper, it is possible to prevent odors from flowing back when the temporary toilet 10 is not in use for a long period of time.

[0032] (Air supply duct) 1 and 2, in the arrangement structure of the present invention, the upper air intake 14 of the temporary toilet 10 and the air outlet 24 of the unit house 20 are connected by an air intake duct 40. In this embodiment, when the exhaust air blower fan 25 provided in the air outlet 24 is operated, the indoor air of the unit house 20, whose temperature has been adjusted by the air conditioning means 30, can be sent into the temporary toilet 10.

[0033] In the example shown in FIGS. 1 and 2, a flexible duct 41 and a rounded corner duct 42 are used as the air supply duct 40.

[0034] The flexible duct 41 of the embodiment is a substantially cylindrical resin member having a bellows structure. The flexible duct 41 of the example shown in Figures 1 and 2 has a diameter of 100 mm and a length of approximately 1 m.

[0035] One end of the flexible duct 41 is connected to the air outlet 24 of the unit house 20 and functions as an air inlet. The end of the flexible duct 41 may be directly inserted into the air outlet 24, but as shown in Figures 1 and 2, it is preferable that the end of the flexible duct 41 and the air outlet 24 are connected via a rounded duct 42.

[0036] The rounded duct 42 of the embodiment is a metallic tubular member with open ends and a shape that gradually changes from a rectangular cross section to a circular cross section. As shown in Fig. 2, the rectangular opening side of the rounded duct 42 of the embodiment is attached to the outer wall of the unit house 20, and the flexible duct 41 is connected to the circular opening side. Connecting the flexible duct 41 and the air outlet 24 via such a rounded duct 42 is preferable because it can effectively blow air while suppressing leakage of indoor air from the unit house 20 and also has a good appearance.

[0037] The other end of the flexible duct 41 is connected to the upper air intake 14 of the temporary toilet 10 and functions as an outlet for temperature-controlled air. The flexible duct 41 of the embodiment is fixed in a state where it is inserted into the upper air intake 14. The gap between the flexible duct 41 and the upper air intake 14 may be filled with putty or the like.

[0038] It is also preferable that a filter for preventing dust and dirt is provided at the outlet of the flexible duct 41. In this embodiment, a filter F for collecting dust is attached to the end of the flexible duct 41 on the outlet side.

[0039] The configuration of air supply duct 40 is not limited to the above, and may include, for example, a non-flexible metal duct or PVC pipe. However, using flexible duct 41 for at least a portion of air supply duct 40 is preferable because it eliminates the need to strictly set the height difference between upper air supply port 14 and air outlet 24, the angle at which temporary toilet 10 is positioned relative to unit house 20, etc. Furthermore, heat insulating material may be provided around the outer periphery of air supply duct 40.

[0040] (action) As shown in Figure 2, when the air conditioning means 30 is operated, the air conditioning (cooling and heating) of the room of the unit house 20 is performed by the conditioned air CA blown into the room from the indoor unit 31. Next, when the exhaust air blower fan 25 is operated, an air flow AF is generated that is blown from the room of the unit house 20 through the air supply duct 40 into the toilet space of the temporary toilet 10. As a result, air at an appropriate temperature is sent from the room of the unit house 20, which is an air-conditioned space, to the temporary toilet 10, which is an unair-conditioned space, and the room temperature of the temporary toilet 10 is regulated.

[0041] 1 and 2, the upper air inlet 14 and the air outlet 24 are close to each other and there is almost no difference in height between them, so the air inlet duct 40 is arranged almost straight. In this embodiment, by operating the exhaust air blower fan 25, the conditioned cool or warm air inside the unit house 20 is sufficiently blown into the temporary toilet 10.

[0042] It is preferable that the unit house 20 is provided with an air intake port for supplying outside air. If the unit house 20 is provided with an air intake port, negative pressure inside the unit house 20 is prevented when the air conditioning means 30 and the exhaust air blower fan 25 are operating, and backflow of air from the temporary toilet 10 is easily prevented.

[0043] (Second embodiment) Next, the arrangement structure of the second embodiment will be described with reference to Figures 3 to 5. In the second embodiment, an exhaust fan 16 is provided in the temporary toilet 10. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and their description will be omitted.

[0044] 3 and 4, an upper air intake 14 is provided in the back panel 12b of the temporary toilet 10, and an air outlet 24 is provided in the right side wall 22c of the modular house 20. In this example, the upper air intake 14 and the air outlet 24 do not face each other, so the direction of the flexible duct 41 is changed in the middle for connection.

[0045] 4 and 5, in this embodiment, the air supply duct 40 is inserted into the upper air supply port 14, and the end of the air supply duct 40 on the outlet side protrudes into the toilet space and faces the toilet bowl BT. With this configuration, air at an appropriate temperature can be directly directed at the user.

[0046] 3 to 5, the temporary toilet 10 in this embodiment is provided with an exhaust fan 16. In this example, the exhaust fan 16 and a ventilation hood 17 are provided at an exhaust port provided at the top of the back panel 12b of the temporary toilet 10. When this exhaust fan 16 is operated, the indoor air of the temporary toilet 10 is discharged to the outside as exhaust air EA. In this embodiment, as another ventilation means, a ventilation port 18 for natural ventilation is provided in the right side panel 12c (see FIG. 3).

[0047] Furthermore, an air intake port 26 is provided in the wall portion 22 of the unit house 20 of this embodiment (see FIG. 4). Outside air is introduced into the room of the unit house 20 as supply air SA from the air intake port 26. If the air intake port 26 is left open while the exhaust blower fan 25 is operating, negative pressure is prevented from occurring inside the unit house 20, and odors from the temporary toilet 10 are less likely to flow back.

[0048] As shown in Figure 4, operating the exhaust fan 5 of the unit house 20 generates an airflow AF that flows from the unit house 20 to the temporary toilet 10. At this time, operating the exhaust fan 16 of the temporary toilet 10 causes the air to be exhausted (EA), preventing the toilet space from becoming positively pressurized. This generates an airflow AF of an appropriate strength, effectively sending air at an appropriate temperature into the toilet space. This is also preferable because it helps ventilate the toilet space and combats odors.

[0049] The equipment such as the exhaust fan 16 of the temporary toilet 10 and the air intake vent 26 of the unit house 20 in this embodiment can also be applied to other embodiments.

[0050] (Air blowing test) The inventors conducted an air blowing test to the temporary toilet 10 under the following conditions in the arrangement structure of the second embodiment.

[0051] (Test conditions) Unit House 20 floor area: Approximately 5.4 tatami mats Floor area of ​​temporary toilet 10: Approximately 1 tatami mat (1,125mm x 850mm) Outside temperature when fan started (2:00 PM): 32.9°C Room temperature of unit house 20 when airflow started: 20°C Room temperature in portable toilet 10 when airflow started: 34°C Air conditioning unit 30 (air conditioner) set temperature: 20°C

[0052] In the air blowing test, the air conditioning means 30 and exhaust blower fan 25 of the unit house 20 and the exhaust fan 16 of the temporary toilet 10 were operated, the door 12e of the temporary toilet 10 and the entrance / exit 22e of the unit house 20 were closed, and the change in room temperature of the temporary toilet 10 was measured.

[0053] (Test results) In the above test, the room temperature of the temporary toilet 10 reached 27°C in about 5 minutes after the start of airflow, lowering the room temperature of the toilet space by 7°C.

[0054] (Third embodiment) Next, the arrangement structure of the third embodiment will be described with reference to Fig. 6. In the third embodiment, two temporary toilets 10 are connected to one unit house 20. In the third embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and their description will be omitted.

[0055] The example unit house 20 shown in Figure 6 is a large unit house 20 in which three unit houses 20a, 20b, and 20c are arranged in a row. In this example, two air outlets 24 are formed in the upper part of the left side wall 22d of the unit house 20. Each of the air outlets 24 is provided with an exhaust air fan 25. However, this configuration is not limited to this, and multiple air outlets 24 may be formed in different wall portions 22.

[0056] In the example shown in Figure 6, two temporary toilets 10 are arranged adjacent to each other. In this example, the temporary toilets 10 each have an upper air intake vent 14 formed in the back panel 12b. The upper air intake vents 14 are connected to the corresponding air outlets 24 by air intake ducts 40.

[0057] In this embodiment, an air supply fan 50 is provided at the upper air supply port 14 of the temporary toilet 10. In the example shown in Figure 6, the air supply fan 50 is fixed to the outer wall of the back panel 12b so as to face the upper air supply port 14. Ends of air supply ducts 40 are connected to the air supply fans 50, respectively.

[0058] In this way, when the air supply fan 50 is provided in the upper air supply port 14 as a ventilation means, conditioned air can be effectively sent into the temporary toilet 10 even if the air supply duct 40 is long or bent along the way.

[0059] The air supply fan 50 of the temporary toilet 10 in this embodiment can also be applied to other embodiments.

[0060] (Fourth embodiment) Next, the arrangement structure of the fourth embodiment will be described with reference to Fig. 7. In the fourth embodiment, air outlets 24 are formed at the upper and lower parts of one exterior wall of the unit house 20. In the fourth embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and their description will be omitted.

[0061] In the example shown in Figure 7, an upper air supply port 14 is formed in the back panel 10b of the temporary toilet 10. The modular house 20 in this example also has an upper air outlet 24U that opens at the top of the right side wall 22c and a lower air outlet 24L that opens at the bottom of the right side wall 22c. An upper exhaust air fan 25U is provided in the upper air outlet 24U, and a lower exhaust air fan 25L is provided in the lower air outlet 24L.

[0062] The example air supply duct 40 shown in Figure 7 is composed of a square duct 43 attached to the unit house 20, a square duct 43 attached to the temporary toilet 10, and a flexible duct 41 connecting these square ducts 43.

[0063] The rectangular duct 43 on the side of the unit house 20 is attached to the right wall 22c so as to cover the upper air outlet 24U and the lower air outlet 24L. One end of a flexible duct 41 is connected to the bottom surface of the rectangular duct 43. The flexible duct 41 is laid on the ground, and the other end is connected to the bottom surface of the rectangular duct 43 attached to the back panel 10b of the temporary toilet 10.

[0064] The square duct 43 on the temporary toilet 10 side is attached to the back panel 10b so as to cover the upper air intake port 14, and its lower end is located near the floor panel 11 of the temporary toilet 10.

[0065] In this example, a filter F is provided at the bottom of the square duct 43 on the temporary toilet 10 side. Above the filter F, an in-duct blower fan 60 is attached.

[0066] If an in-duct blower fan 60 is provided in the middle of the air intake duct 40, air can be effectively blown into the temporary toilet 10 even if the overall length of the air intake duct 40 is long or the elevation difference in the path of the air intake duct 40 is large. The in-duct blower fan 60 in this embodiment can also be applied to other embodiments. The in-duct blower fan 60 may be provided in the flexible duct 41. For example, an intermediate duct fan may be attached to the flexible duct 41.

[0067] With the layout structure of this embodiment, when the temperature is low, such as in winter, the upper blower fan 25U is operated to blow out the warm indoor air that has accumulated on the upper side of the unit house 20, and when the temperature is high, such as in summer, the lower blower fan 25L is operated to blow out the cold indoor air that has accumulated on the lower side of the unit house 20.

[0068] The arrangement structure of each embodiment of the present invention allows for effective regulation of the room temperature in the toilet space with a simple structure.

[0069] Although the present invention has been described above using the embodiments as examples, the present invention is not limited to the above embodiments and can be embodied in various forms. For example, a louver may be provided at the air outlet 24 of the unit house 20, and the air blowing means may be provided in the temporary toilet 10 and / or the air supply duct 40. [Explanation of symbols]

[0070] 10 Portable toilets T toilet tank TB toilet 11 Floor panel (floor section) 12 Wall 12a Front Panel 12b Back Panel 12c Right Side Panel 12d Left side panel 12e Door 13 Roof panel (ceiling) 14 Upper air supply port 15 Louvers 16 Exhaust fan 17 Ventilation hood 18 Ventilation vent 20 Unit House 21 Floor 22 Wall 22a front wall 22b Back wall 22c Right side wall 22d left side wall 22e entrance / exit 23 Ceiling 24 Ventilation outlet 24U upper air outlet 24L bottom air outlet 25 Exhaust ventilation fan 25U Upper Exhaust Fan 25L bottom exhaust fan 26 Air supply port 30 Air conditioning means 31 Indoor unit 32 Outdoor unit 33 Piping 40 Air supply duct 41 Flexible Duct 42 Rounded Duct 43 Square duct F Filter 50 Intake fan 60 Duct ventilation fan

Claims

1. A temporary toilet arrangement structure arranged near a modular house equipped with an air conditioning means for heating or cooling indoor air and an air outlet that connects the indoor and outdoor areas, The temporary toilet is: The toilet comprises a floor portion having a toilet bowl, a wall portion erected from the floor portion so as to surround the toilet bowl, a ceiling portion covering the upper part of the wall portion, and an upper air intake port provided at the upper part of the wall portion, The upper air intake port and the air outlet are connected by an air intake duct, At least one of the unit house, the temporary toilet, or the air supply duct is provided with a blower means for blowing indoor air from the unit house into the temporary toilet, A temporary toilet arrangement structure in which the air blowing means is operated and indoor air from the unit house that has been temperature-controlled by the air conditioning means is sent into the temporary toilet.

2. 2. The temporary toilet arrangement structure according to claim 1, wherein the air blowing means includes an exhaust air blowing fan provided at the air outlet of the modular house.

3. 3. The temporary toilet arrangement structure according to claim 1, wherein the air blowing means includes an air supply fan provided in the upper air supply port of the temporary toilet.

4. 3. The temporary toilet arrangement structure according to claim 1, wherein the air blowing means includes an air blowing fan provided in an intermediate portion of the air supply duct.

5. The air outlet is an upper air outlet opening at an upper portion of one exterior wall of the modular house and a lower air outlet opening at a lower portion of the exterior wall; When the temperature is low, an upper exhaust fan provided in the upper air outlet is operated to send warm indoor air into the temporary toilet, 3. The temporary toilet arrangement structure according to claim 2, wherein when the temperature is high, a lower exhaust fan provided in the lower air outlet is operated to send cool indoor air into the temporary toilet.

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