JP2019061421A - Sensitivity test device - Google Patents

Abstract

To provide a sensitivity test device that allows a smoke generating agent to be replenished without substantial change of the sensitivity test device and can generate simulated smoke vaporized by vaporization of the smoke generating agent to supply it to a test space.SOLUTION: A smoke generating portion 10 detachably provided with relative to a housing of a sensitivity test device has a smoke generating agent 48 housed in a transparent or translucent container 24. An opening of the transparent or translucent container 24 is closed with a circuit board 22. Both ends of a string-like core material 26 are passed through the circuit board 22 and immersed in the smoke generating agent 48. A heater 30 is wound around a horizontal exposed portion of the core material 26, and a guard case 15 on the top of which a smoke discharge port in any of a reticular, mesh, slit, or punching hole pattern or a composite form thereof is formed is disposed covering the heater 30 and part of the core material 26 heated by the heater 30. By energizing the heater 30 to heat, the smoke generating agent 48 impregnated in the core material 26 is vaporized to generate smoke.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a sensitivity test apparatus used for a sensitivity test of a smoke sensor.

  Conventionally, a fire alarm system is installed in a building such as an office, and when a fire occurs, smoke generated by the fire is detected by a smoke detector, a notification signal is sent to a receiver, and a fire alarm is generated. It makes it possible to output, extinguish, evacuate and firefighting activities.

  The fire alarm system is regularly checked after installation in a building, and for the smoke sensor, the smoke sensor installed on the ceiling is removed and a sensitivity test device brought in at the time of inspection is used Have conducted a smoke sensor sensitivity test.

  The sensitivity test device places the smoke sensor to be tested in the test space in the device housing, supplies smoke from the smoke source to the test space in this state, and the smoke sensor emits a notification at a predetermined smoke concentration. Conducted a sensitivity test to confirm the

  As smokers used for the sensitivity test device, incense sticks, filter paper, gas spray for smoke test, and fats and oils are used.

  However, when incense sticks are used, the odor is so strong that they can not be used in buildings where a large number of people gather, especially in hospitals, and the number of items that can be checked with one incense stick is limited. In addition, since the smoke of incense smoke has a relatively fine particle size, the ionization type smoke detector is likely to trigger in a short time, but in the case of the photoelectric smoke detector, it takes a long time to trigger. The problem is that the work efficiency of the inspection is poor.

  In addition, when filter paper is used as the smoke source, it is difficult to generate smoke continuously at a constant speed, for example, because the filter paper cut into about 1 cm square is roasted by a pot heater, and furthermore, pot Since the heater is always heated to about 400 ° C., there is a problem that power consumption increases.

  In the case of using a smoke test gas sprayer, the price is high because it uses fluorocarbon gas, and in the future, there is a problem of difficulty in obtaining alternative fluorocarbons and price increase. In addition, it is not easy to control the amount of gas emission, high concentration smoke is generated and it takes time to restore the smoke detector, and the low sensitivity smoke detector takes time to operate and inspection efficiency is poor. Furthermore, although LPG can be used as an alternative gas, it is flammable and can not be used at low temperatures.

  When fats and oils are used, although sewing machine oil, lamp oil, etc. are heated, the smell is strong and it is not suitable for inspection in a general building. In addition, oil smoke may contaminate the sensor surface and the ceiling surface, and may also affect the sensitivity of the smoke sensor. Furthermore, since the core and heater for impregnating fat and oil are large, it is driven by a commercial AC power supply, power consumption also increases, and it takes time until the temperature of the heater becomes high and smoke starts.

  In order to solve such a problem, in the sensitivity test apparatus of Patent Document 1, a smoke generation unit for emitting smoke from the tip is provided in the test space of the sensitivity test apparatus, and the smoke generation unit includes a heater and smoke generation in the cylinder. Liquid supply unit impregnated with a water-soluble liquid as an agent, air is sent from the air blowing unit into the cylindrical body when conducting a test, and the water-soluble liquid vaporized by heating by the heater is atomized to release simulated smoke To conduct a smoke sensor sensitivity test.

  According to such a smoke test jig, since the atomized pseudo smoke is generated by the vaporization of the water-soluble liquid, there is no problem such as an odor, and the smoke is continuously generated at a constant speed. This makes it possible to efficiently advance the smoke sensor sensitivity test at the inspection site.

JP-A-2013-127766 JP, 2013-127765, A

  However, in such a conventional sensitivity test apparatus, the smoke generation unit for generating the simulated smoke atomized by the evaporation of the smoke generation agent is a smoke generation body provided with a liquid supply unit and a heater, a blowing unit, a control unit, etc. Since it is necessary to additionally provide the sensitivity testing apparatus, the configuration of the sensitivity testing apparatus is complicated, and there is a problem that the existing sensitivity testing apparatus can not be fully utilized.

  In addition, in the case of incorporating a smoke generation unit that generates simulated smoke that is atomized by the vaporization of a water-soluble liquid in the sensitivity test device, a structure is required to make it possible to replace the used smoke. In any case, it is desirable to make full use of the existing sensitivity testing device structure.

  Furthermore, one sensitivity test requires, for example, about 0.05 cc of fuming agent, and a visit to the site where the smoke sensor sensitivity test is conducted several tens of times a day. Although a water-soluble liquid of about 0 cc is required, the conventional smoke generating part has a cartridge structure and has a problem that the amount of the water-soluble liquid used for smoke generation is small, and the smoke needs to be replaced frequently.

  Further, in order to supply the generated pseudo smoke to the entire sensitivity test apparatus, the sensitivity test apparatus generates an air flow using a circulation fan or the like. If the air flow directly hits the heater of the smoke generation part, the temperature of the heater is lowered, and it takes a long time to smoke, and it is assumed that control of the amount of smoke becomes difficult.

  According to the present invention, it is possible to replenish the smoke generating agent without significantly changing the sensitivity test device, and the smoke generation operation is stabilized while the smoke is circulated throughout the sensitivity test device, and the smoked agent is vaporized by evaporation. An object of the present invention is to provide a sensitivity test apparatus capable of generating smoke and supplying it to a test space.

(Sensitivity test equipment)
The present invention relates to a sensitivity test apparatus for testing smoke sensor sensitivity by supplying smoke to a test space provided with a smoke sensor to be tested in a housing.
The smoke department is
Smoke-impregnated non-combustible core material,
A heater that generates smoke by heating the fumes impregnated in the core material;
A heater and a guard case disposed on the outside of the core portion heated by the heater and having a smoke outlet formed at the top,
A control unit that generates smoke by heating a fuming agent impregnated in a core material by energization of a heater according to a predetermined operation;
It is characterized by being configured by

(Guard structure of smoke outlet)
The smoke release port of the guard case is any of grid-like, mesh-like, slit-like, punching-hole-like or composite form thereof.

(Intake structure of guard case)
The side periphery of the guard case has an intake structure.

(Removable structure of smoke detector)
A smoke generation unit is detachably provided to the housing.

(Structure 1 of the smoke generation unit)
The smoke generation unit further includes a container containing a smoke release agent and provided with a smoke release agent inlet.
The container of the smoke section is a transparent or translucent container whose top surface is opened,
The opening of the transparent or translucent container is closed by the arrangement of the circuit board,
In a pair of core material through holes formed in the circuit board, the core material is dipped in the smoke release agent stored in the container through both ends of the string-like core material,
A heater is wound around the horizontal exposed portion of the core material located on the upper surface of the circuit board,
Both ends of the heater are supported and fixed to a pair of terminal members erected on the circuit board, and are connected to the conduction pattern formed on the circuit board,
A guard case is disposed covering the outside of the horizontal exposed portion of the core material wound with a heater disposed on the circuit board.
The connector part which connects a heater to a control part is provided in the part of the circuit board which becomes the outside of a guard case,
In addition, the circuit board is provided with a fuming agent inlet.

(Structure of the smoke generation unit 2)
The smoke generation unit further includes a container containing a smoke generation agent,
The container of the smoke section is a transparent or translucent container whose top surface is opened,
The opening of the transparent or translucent container is closed by the arrangement of the circuit board,
A leakproof sheet is disposed between the transparent or translucent container and the circuit board,
The pair of core material through holes formed in the liquid leakage prevention sheet is immersed in the smoke generating agent stored in a transparent or translucent container through both ends of the string-like core material through the opening holes of the circuit board,
A heater is wound around the horizontal exposed portion of the core material located on the upper surface of the circuit board,
Both ends of the heater are supported and fixed to a pair of terminal members erected on the circuit board, and are connected to the conduction pattern formed on the circuit board,
A guard case is disposed covering the outside of the horizontal exposed portion of the core material wound with a heater disposed on the circuit board.
The circuit board of the control unit that is outside the guard case is provided with a connector unit that connects the heater to the control unit.

(Structure of the smoke generation unit 3)
The smoke generation unit further includes a container containing a smoke release agent and provided with a smoke release agent inlet.
The container of the smoke unit is a transparent or translucent container whose upper surface is closed,
In the core material through hole formed on the upper surface of the transparent or translucent container, the rod-like core material is dipped in the smoke release agent stored in the container at the lower end,
A heater is wound around the vertically exposed portion of the core material taken out of the upper surface of the transparent or translucent container,
A guard case is placed on top of the transparent or translucent container, covering the outside of the vertical exposed portion of the core material wound with a heater,
A connector unit is provided on the outside of the guard case to connect the heater to the control unit,
In addition, the top of the transparent or translucent container is provided with a fume inlet.

(Structure of the smoke generation unit 4)
The smoke generation unit further includes a container containing a smoke release agent and provided with a smoke release agent inlet.
The container of the smoke unit is a transparent or translucent container whose upper surface is closed,
In a pair of core material through holes formed on the upper surface of a transparent or translucent container, the core material is dipped in the smoke release agent stored in the container through both ends of the cord-like core material,
A heater is wound around the horizontally exposed portion of the core material taken out of the upper surface of the transparent or translucent container,
A guard case is placed on top of the transparent or translucent container, covering the outside of the horizontal exposed portion of the core material wound with a heater,
A connector unit is provided on the outside of the guard case to connect the heater to the control unit,
In addition, the top of the transparent or translucent container is provided with a fume inlet.

(Fuming agent inlet cap)
The core material through hole and the smoke agent inlet are respectively provided with a smoke release agent liquid leakage prevention structure.

(Scale of transparent or translucent container)
The transparent or translucent container is provided with a predetermined scale indicating the amount of fuming agent.

(Heater duty control)
The control unit controls the duty ratio of the drive signal to the heater such that the smoke concentration in the test space detected by the concentration detector maintains a predetermined reference value.

(Fuming agent)
The fuming agent is a water-soluble liquid containing at least one component of propylene glycol, glycerin, dipropylene glycol, tripropylene glycol or glycol.

(Basic effect)
The present invention relates to a sensitivity test apparatus for testing smoke detector sensitivity by supplying smoke to a test space provided with a smoke sensor to be tested in a housing, wherein the smoke generation unit emits smoke. The non-combustible core material impregnated with the agent, the heater that heats the smoked agent impregnated in the core material to generate smoke, and the heater and the core of the core material heated by the heater are arranged covering And a control unit that generates smoke by heating the smoke generating agent impregnated in the core material by energization of the heater by a predetermined operation. Even in the sensitivity test apparatus, it is only necessary to detachably attach the smoke generation unit to the housing, and the change in the sensitivity test apparatus can be minimized, and the sensitivity test can be easily and easily performed.

  In addition, since smoke is generated by heating with a heater in a state in which smoke is contained in a container and impregnated in a nonflammable core material, a sufficient amount of smoke required for sensitivity test is put in the container It can be stored easily, and can be easily refilled if the smoke release agent is reduced by use, which makes it possible to improve the working efficiency.

  In addition, a guard case is provided that covers the heater and the outside of the core portion heated by the heater, and has a smoke emission port formed in a lattice, mesh, slit, punching hole shape or a composite form on the top. By placing the sensor, it is possible to reliably prevent the finger from touching the heater, causing deformation or burns, and preventing foreign matter from adhering, and the air flow from the circulating fan placed in the test space directly hits the heater. It is possible to generate smoke efficiently by heating the fuming agent without cooling.

(Effect of guard structure of smoke outlet)
The smoke emission port of the guard case has a grid, mesh, slit, punching hole shape, or a combination thereof, so that the finger can be deformed by touching the heater without obstructing the smoke emission with a simple structure. And foreign objects can be reliably prevented from adhering.

(Effect by intake structure of guard case)
Further, since the side peripheral portion of the guard case has an intake structure, it is possible to efficiently release the smoke generated by heating the smoke generating agent impregnated in the core material by energization of the heater to the outside.

(Effect of detachable structure of smoke detector)
In addition, since the smoke generation unit is provided detachably with respect to the housing, replacement and replenishment of the smoke generation agent to the smoke detection unit can be simplified.

(Effect by structure 1 of the smoke generation part)
In addition, the smoke generation unit further includes a container containing a smoke release agent and provided with a smoke release agent inlet, and the container of the smoke generation unit is a transparent or translucent container with an open top, and an opening of the transparent or translucent container The unit is closed by the arrangement of the circuit board, and is immersed in the smoke release agent stored in the container through both ends of the string-like core in the pair of core material through holes formed in the circuit board, and is positioned on the upper surface of the circuit board A heater is wound around the horizontal exposed portion of the core member, and both ends of the heater are supported and fixed to a pair of terminal members erected on the circuit board, connected to the conduction pattern formed on the circuit board, and arranged on the circuit board A guard case is disposed to cover the outside of the horizontal exposed portion of the core material wound with the heater, and a connector portion for connecting the heater to the control unit is provided at a portion of the circuit board that is the outside of the guard case. Circuit board Since the agent injection port is provided, the circuit board functions as a lid of a transparent or translucent container, and the core material, the heater and the connector part wound around the core material are supported and fixed on the circuit substrate, and smoke is further generated. By providing the agent injection port, the smoke generation unit can be compactly configured. In addition, the heater is wound around the horizontal portion of the core material exposed on the circuit board, and it is possible to generate smoke by effectively utilizing the space around the horizontal.

(Effect by structure 2 of smoke generation part)
The smoke unit further includes a container containing a smoke agent, the container of the smoke unit is a transparent or translucent container whose upper surface is opened, and the opening of the transparent or translucent container is arranged by the arrangement of the circuit board. A liquid leakage preventing sheet is disposed between a closed, transparent or translucent container and the circuit board, and a pair of core material through holes formed in the liquid leakage preventing sheet are string-like through the opening holes of the circuit board. The heater is wound around the horizontally exposed portion of the core material which is immersed in the smoke or smoke agent contained in a transparent or translucent container through both ends of the core material, and the pair of Both ends of the heater are supported and fixed to the terminal member and connected to the conduction pattern formed on the circuit board, and the heater arranged on the circuit board covers the outside of the horizontally exposed portion of the wound core material to arrange the guard case And the outside of the guard case The circuit board of the control unit is provided with a connector unit for connecting the heater to the control unit. Therefore, in addition to the effect of the structure 1 of the smoke generation unit, the elastic sheet disposed between the circuit substrate and the container is a liquid leakage prevention sheet As a result, by passing the core through the through hole of the elastic sheet, it is possible to reliably prevent the fuming agent from leaking to the outside from the gap between the core through hole and the core even if the smoke part is inclined. . Furthermore, since the closed structure of the container can be maintained while the core material is passed through the core material through hole, it is not necessary to insert and remove the core material each time the sensitivity tester moves, thereby reducing the time and effort for each test.

(Effect by structure 3 of smoke generation part)
In addition, the smoke unit further includes a container containing a smoke agent and provided with a smoke agent inlet, and the container of the smoke unit is a transparent or translucent container whose upper surface is closed, and the upper surface of the transparent or translucent container The lower end of the core material is dipped in the core material through hole, and the lower end of the core material is dipped in the smoke agent contained in the container, and the heater is wound on the vertically exposed portion of the core material taken out from the upper surface of the transparent or translucent container. A guard case is disposed on the upper surface of a transparent or translucent container covering the outside of the vertically exposed portion of the core material which is turned and the heater is wound, and a connector portion for connecting the heater to the control part outside the guard case Further, since the top surface of the transparent or translucent container is provided with a smoke releasing agent inlet, a sealed transparent or translucent container can be used, and the core material is vertically stood on the transparent or translucent container. The exposed core part of the upper part Data is wound, by protecting frame reticulated smoke outlet is formed to cover the outside are arranged, it is possible to construct a smoke unit compact. In addition, a heater is wound around the vertical portion of the core material projected to the upper side of the transparent or translucent container, and it is possible to generate smoke by effectively utilizing the space around the vertical.

(Effect by the structure 4 of the smoke generation part)
In addition, the smoke unit further includes a container containing a smoke agent and provided with a smoke agent inlet, and the container of the smoke unit is a transparent or translucent container whose upper surface is closed, and the upper surface of the transparent or translucent container Into a pair of core material through holes formed in the bottom of the string-like core material and through the opposite ends of the core material which is immersed in the smoke agent contained in the container and removed from the upper surface of the transparent or translucent container The heater is wound, the heater covers the outside of the horizontal exposed portion of the wound core material, the guard case is disposed on the upper surface of the transparent or translucent container, and the heater is connected to the control unit outside the guard case A connector part is provided, and further, since a smoke filler inlet is provided on the upper surface of the transparent or translucent container, the smoke storage part protrudes from the upper part to be integrally formed, and the core inside the transparent or translucent container Materials and heaters are placed on the top By reticulated smoke outlet is formed, it is possible to construct a smoke unit compact.

(Effect of the smoke filler inlet cap)
In addition, since the smoke transfer agent injection port is provided with a smoke release agent injection port cap for injecting the smoke release agent by the insertion of the injection needle, the use of a syringe etc. makes the cap easy and easily transparent without the need for attaching and detaching the cap. Alternatively, the fuming agent can be replenished in a translucent container.

(Effect by the liquid leakage prevention cap of the core material)
In addition, since the leak through cap of the core material is provided in the core material through hole, the fuming agent is externally provided from the gap between the core material through hole and the core material even if the smoke emission part is inclined. Can be reliably prevented from leaking out.

(Effect by scale of transparent or translucent container)
In addition, since a transparent or translucent container is provided with a predetermined scale indicating the amount of smoke generating agent, for example, a memory indicating an upper limit and a lower limit or a scale indicating an appropriate amount enters a transparent or translucent container. Management of the fuming agent is simple and easy.

(Effect by heater duty control)
Further, since the control unit controls the duty ratio of the drive signal to the heater so that the smoke concentration in the test space detected by the concentration detector maintains a predetermined reference value, immediately after the start of energization of the heater, Since no detection value can be obtained from the concentration detector, the heater drive signal is controlled to a large duty ratio, for example, exceeding 80%, and the time until the smoke start can be shortened, and thereafter the detection value can be obtained from the concentration detector In this case, the duty ratio decreases according to the increase of the detected value, for example, the duty ratio becomes 20 to 30%, and smoke is continued to enable efficient sensitivity test work.

(Effect by smoke agent)
In addition, since the smoke generating agent is a water-soluble liquid containing at least one component of propylene glycol, glycerin, dipropylene glycol, tripropylene glycol or glycol, the heating evaporation by the heater generates pseudo smoke close to white, which is suitable. The operation of the smoke sensor can be confirmed efficiently, and since it is a water-soluble liquid of inexpensive components, it is possible to reduce the manufacturing cost and operation cost of the sensitivity test device.

Explanatory drawing which showed the embodiment of the sensitivity test apparatus in the test state of the smoke sensor. Explanatory drawing which showed the embodiment of the sensitivity test device from the side Explanatory drawing which showed 1st Embodiment of the smoke generation part provided in the sensitivity test device Explanatory drawing which showed the internal structure of the smoke generation part of FIG. 3 Explanatory drawing which took out and showed the liquid leakage prevention cap provided in the smoke generation part Explanatory drawing which took out and showed the smoke release agent inlet cap provided in the smoke release part. Block diagram showing the functional configuration of the control unit provided in the smoke generation unit The time chart which showed the duty control of the heater drive signal by the PWM circuit of FIG. 7 Explanatory drawing which showed the 2nd Embodiment of the smoke generation part provided in the sensitivity test device from the plane and the side Explanatory drawing which showed 2nd Embodiment of the smoke generation part provided in the sensitivity test device from the front Explanatory drawing which showed the liquid leak prevention structure provided in 2nd Embodiment of the sensitivity test device Explanatory drawing which showed 3rd Embodiment of the smoke generation part provided in the sensitivity test device Explanatory drawing which showed the other example of the connector arrangement | positioning in the sensitivity test device of 3rd Embodiment. Explanatory drawing which showed 4th Embodiment of the smoke generation part provided in the sensitivity test device

[Overview of sensitivity test equipment]
FIG. 1 is an explanatory view showing an embodiment of a sensitivity test apparatus in a test state of a smoke sensor, showing a front in FIG. 1 (A) and showing a plane in a state in which the operation panel is drawn out in FIG. . Moreover, FIG. 2 is explanatory drawing which showed embodiment of the sensitivity test device from the side.

  As shown in FIG. 1 and FIG. 2, the sensitivity test apparatus 100 of this embodiment has a test space 101 inside the housing 102 and is mounted on a mount 138 disposed inside the housing 102 inside the open / close lid 104. A mounting base 142 of the smoke sensor 140 to be tested is disposed.

  In the lower right corner of the front of the sensitivity test apparatus, a smoke detector 10 is disposed so as to be freely drawn by a handle 20. The smoke detector 10 generates simulated smoke (hereinafter referred to as "smoke") atomized by the vaporization of a water-soluble liquid that functions as a smoke generating agent.

  A circulation fan 106 is disposed in the vicinity of the smoke generation unit 10, and the smoke sent from the smoke generation unit 10 to the test space 101 is sent to the left by the circulation fan 106. The smoke sent by the circulation fan 106 is sent to the upper side of the test space 101 by the rectifying plate 108, and the smoke sensor 140 mounted on the mounting base 142 is located in the upper space, and the smoke concentration of the test space 101 is A concentration detector 112 for detecting is provided.

  At the lower front side of the sensitivity test apparatus 100, an operation panel 116 having a drawer structure is accommodated. As shown in FIG. 1B, the operation panel 116 is provided with a power switch 122. When the power switch 122 is turned on, the power lamp 130 is turned on, and the smoke sensor 140 mounted on the mounting base 142 is specified. The power supply voltage is supplied to the sensor voltmeter 134.

  The sensor supply voltage can be adjusted by the voltage adjustment knob 124. When the smoke supplied to the test space 101 flows into the smoke sensor 140 and reaches a predetermined smoke concentration, the smoke sensor 140 emits a test, and the alarm indicator light 132 is turned on.

  In addition, the smoke concentration detection signal from the concentration detector 112 is displayed on a densitometer 136 using a micro amperometer. Since the smoke sensor 140 to be tested by the sensitivity test apparatus 100 has a photoelectric type and an ionization type, the densitometer switching switch 128 is switched according to the type of the smoke sensor. The zero point of the densitometer 136 is adjusted by the photoelectric zero adjustment knob 126 in the case of the photoelectric smoke sensor, and is adjusted by the ion zero adjustment knob 127 in the case of the ionization smoke sensor.

  As shown in FIG. 2, the smoke generation unit 10 stores the smoke generation mechanism 11 in a box-shaped case, and the smoke generation mechanism 11 atomizes the smoke generation agent stored in the container by heating and vaporizing the smoke generation agent by the heater. Generate smoke. A control board 96 is disposed in the case, and a control unit 98 is mounted on the control board 96. When the power switch 122 provided on the operation panel 116 of FIG. 1B is turned on, the control unit Reference numeral 98 generates smoke by control of energization of the heater.

[Composition of smoke generation part]
FIG. 3 is an explanatory view showing a first embodiment of the smoke generation portion provided in the sensitivity test apparatus, and FIG. 3 (A) shows a plane and FIG. 3 (B) shows a side. FIG. 4 is an explanatory view showing the internal structure of the smoke generation part of FIG. 3. FIG. 4 (A) shows a plane from which the case lid is removed, and FIG. 4 (B) shows a cross section seen from the side.

(Summary of the smoke department)
As shown in FIGS. 3 and 4, the smoke generation mechanism 11 is incorporated in the box-shaped case body 12 opened above the smoke generation unit 10. The smoke generating mechanism 11 is provided with a cup-shaped transparent container 24 in which the smoke generating agent 48 is stored, and the upper opening of the transparent container 24 is closed by adhering and fixing the circuit board 22.

  A pair of liquid leakage prevention caps 28 are disposed on the circuit board 22, and both ends of the string-like core material 26 are passed through the liquid leakage prevention caps 28, and the tip of the core material 26 is accommodated in the transparent container 24. The core material 26 is impregnated with the fuming agent 48 by immersing the fuming agent 48 by capillary action.

  As the core material 26, noncombustible glass fiber, silica fiber, stainless steel stranded wire or the like is used. In addition, as the smoke generating agent 48, a water-soluble liquid harmless to the human body is used, which contains at least one component having hydrophilicity and high water retentivity, such as glycerin and propylene glycol.

  A heater 30 is wound around a horizontally exposed portion of the core 26 located on the top surface of the circuit board 22. The heater 30 is a metal wire such as a nichrome wire or a platinum wire. For example, a heater wire with a wire diameter of 0.2 to 0.4 mm is wound around the core 26 in a coil shape, and the coil inner diameter is 1.0 to 3.0 mm. The coil length is 10 mm or less.

  The heater 30 is fixedly supported by a screw 34 on a pair of coil support poles 32 on both ends of which the coil stands on the circuit board 22, and both coil ends are electrically connected to the circuit pattern 36 of the circuit board 22 via the coil support poles 32. It is connected to the. The lead 38 is connected to the right end of the circuit pattern 36, and the lead 38 is connected to the control board 96 shown in FIG.

  Further, a temperature sensor 44 is disposed on the substrate in the vicinity of the heater 30 supported by the circuit substrate 22 and is connected to the lead wire 38 via the circuit pattern 42, and the connector 40 of the lead wire 38 is shown in FIG. It is connected to the control board 96 shown.

  Further, the horizontal exposed portion of the core member 26 around which the heater 30 disposed on the circuit board 22 is wound covers the outside of the minute portion, the cylindrical guard case 15 is disposed, and the grid guard 15a is provided on the guard case 15 A smoke outlet disposed is formed to prevent a finger from touching and deforming the heater 30 inside and preventing the foreign matter from adhering. In addition, in place of the lattice guard 15a, a guard having a rough mesh structure may be provided at the smoke discharge port of the guard case 15.

  Further, as shown in FIG. 4B, an intake hole 15b is formed as an intake structure at the side peripheral portion of the guard case 15, and the smoke agent 48 impregnated in the core 26 by the energization of the heater 30 is heated. It is possible to efficiently emit the smoke generated by the outside to the outside.

  As shown in FIG. 3A, a smoke emission port 16 having a rectangular opening is formed in the portion of the case cover 14 located in the upper part of the smoke generation mechanism 11 housed in the case main body 12, and the smoke emission port A grid guard 18 is disposed in a cruciform shape at 16 to prevent the finger from touching the heater 30 inside to deform it or to prevent the attachment of foreign matter, similar to the guard case 15. Also in this case, the smoke outlet 16 may be provided with a coarse mesh guard in place of the lattice guard 18.

  Further, since the heater 30 is provided inside the case with respect to the smoke outlet 16, the air flow in the test space does not directly hit, and the heater 30 is cooled by the air flow to suppress the generation of smoke. Absent.

  Since the guard case 15 is disposed also on the circuit board 22 side, the lattice guard 18 may not be disposed at the smoke emission port 16 of the case cover 14 and may simply be formed as a rectangular opening.

  In addition, the circuit board 22 is provided with a smoke filler inlet cap 46, and by using a syringe or the like, the smoke filler 48 can be injected and replenished into the transparent container 24 through the smoke filler inlet cap 46. ing.

  Further, on the side surface of the transparent container 24, a scale 50 indicating the amount of the smoke generating agent 48 is provided. The scale 50 in the present embodiment indicates the upper limit 50a, the lower limit 50b, the upper limit 50c, and the lower limit 50d, and the check of the scale 50 makes management of the fuming agent 48 contained in the transparent container 24 simple and easy. Can be done.

(Cap for leak prevention)
FIG. 5 is an explanatory view showing the liquid leakage prevention cap provided in the smoke part taken out and shown, and FIG. 5 (A) shows a plan view and FIG. 5 (B) shows a cross section seen from the side.

  As shown in FIG. 5, the liquid leakage prevention cap 28 is made of rubber, and is fitted and fixed to the through hole 52 provided in the circuit board 22, and the core 26 passes through the squeeze hole 54 of the liquid leakage prevention cap 28. There is. The hole diameter of the throttling hole 54 is smaller than the outer diameter of the core member 26, and the core member 26 is in close contact by being squeezed when passing through the throttling hole 54, and the smoke agent from the transparent container 24 is Securely prevent the leakage of 48 to the outside.

(Fuming agent inlet cap)
FIG. 6 is an explanatory view showing the smoke agent inlet cap provided in the smoke part taken out, and shows a plane in FIG. 6 (A) and a cross section seen from the side in FIG. 6 (B).

  As shown in FIG. 6, the smoke filler inlet cap 46 has a metal cap main body 56 fitted in the through hole of the circuit board 22 and closely fixed by a sealing layer 62 such as an adhesive. A rubber cap 58 is incorporated in the upper and lower through holes. The rubber cap 58 is formed with a tapered hole 60 opened at the upper end, and the lower side of the tapered hole 60 is in close contact and closed.

  When injecting the smoke release agent 48 into the transparent container 24, put the smoke release agent 48 into the syringe, insert the injection needle into the tapered hole 60 of the smoke release agent inlet cap 46, and project the tip into the transparent container 24. The smoker 48 is injected by pushing the plunger of the syringe. When the injection of the smoke agent 48 is completed by the syringe and the injection needle is removed, the lower side of the tapered hole 60 is in close contact and is closed, and the function as a check valve can reliably prevent the smoke agent 48 from leaking.

  When injecting the fuming agent 48 using such a syringe, by looking at the scale 50 of the transparent container 24 shown in FIG. 4 (B), the injection of the fuming agent 48 in the required amount is simple and reliable. You can

(Configuration of control unit)
FIG. 7 is a block diagram showing a functional configuration of a control unit provided in the smoke generation unit. As illustrated in FIG. 7, when the power switch 122 is turned on, the control unit 98 is supplied with power from the power supply unit 64 to the constant voltage circuit 66, and receives control from the constant voltage circuit 66 to operate. Do. Further, to the control unit 98, the heater 30 provided in the smoke generation unit 10 and the temperature sensor 44 are connected, and further, the concentration detector 112 disposed in the test space is connected.

  The control unit 98 includes a feedback circuit 68, a PWM circuit 70, and a heater driving circuit 72. An error amplifier 74 and a reference voltage source 76 are provided in the feedback circuit 68, and a target smoke density in the test space is set by the reference voltage Vref of the reference voltage source 76.

  As a result, the feedback signal E1 output from the error amplifier 74 increases in level if the detected density by the smoke density detection signal from the density detector 112 is lower than the target density by the reference voltage Vref, and the smoke from the density detector 112 When the detected concentration by the concentration detection signal approaches the target concentration by the reference voltage Vref, the level changes to decrease.

  The PWM circuit 70 is composed of a triangular wave generator 78 and a PWM comparator 80. As shown in FIG. 8A, the triangular wave generator 78 generates a triangular wave signal E2 repeating at a predetermined cycle, and the PWM comparator 80 compares the feedback signal E1 with the triangular wave signal E2, as shown in FIG. 8B. The PWM signal E3 shown is output.

  The PWM signal E3 has a high duty ratio when the level of the feedback signal E1 is high, and the duty ratio decreases when the level of the feedback signal E1 decreases.

  Immediately after the power switch 112 is turned on, the smoke density detected by the density detector 112 is a low value with respect to the reference voltage Vref since there is no smoke emission from the smoke generating unit 10, and therefore feedback The signal E1 is at a high level, and as shown immediately after time t0 in FIG. 8, the duty ratio of the PWM signal E3 becomes a high value, for example 80% or more, and the heater drive circuit 72 responds to the duty ratio of the PWM signal E3. When the heater 30 is energized and the amount of energization of the heater 30 increases, the fuming agent 48 impregnated in the core 26 is heated in a short time, and the smoke is released.

  The smoke concentration detected by the concentration detector 112 starts to increase with the emission of smoke by the smoke generation unit 10, whereby the level of the feedback signal E1 starts to decrease, and the duty ratio of the PWM signal E3 also starts to decrease. When the smoke concentration is reached, the duty ratio of the PEW signal E3 is maintained at, for example, a value of 20 to 30%.

  The temperature of the smoke generation unit 10 is monitored by the temperature sensor 44. When abnormal heating occurs due to the energization of the heater 30, the temperature detected by the temperature sensor 44 exceeds a predetermined threshold temperature, for example, a heater drive circuit The protection operation to stop the operation of 72 is performed.

[Test work by sensitivity test equipment]
Next, the sensitivity test of the smoke sensor by the sensitivity test apparatus 100 will be described. As shown in FIG. 1 and FIG. 2, when the sensitivity test of the smoke detector is performed by the sensitivity test apparatus 100, as shown in the open / close lid 104a of FIG. The smoke sensor 140 is attached to the base 142 and closed, and in this state, the smoke detector 10 is housed in the housing 102, and the power switch 112 is turned on.

  When the power switch 112 is turned on, the control unit 98 shown in FIG. 7 operates, and the core material 26 impregnated with the fuming agent 48 is overheated by energization of the heater 30 by PWM control. Here, the contact portion of the heater 30 with respect to the core material 26 functions as a vaporizer (atomizer), and the water-soluble liquid containing components such as glycerin and propylene glycol impregnated in the core material 26 is vaporized to become smoke. It is discharged from the discharge port 16.

  The smoke emitted from the smoke generation unit 10 is emitted to the lower right corner of the test space 101 inside the housing 102 and is fed to the upper space of the test space 101 through the rectifying plate 108 by the circulation fan 106 to increase the smoke concentration. Let

  For this reason, when smoke flows into the smoke detector 140 and the smoke detector 140 is notified and the alarm indicator light 132 is turned on, the sensitivity is determined depending on whether or not the display of the densitometer 136 at that time is within a predetermined range. To check.

Second Embodiment of the Smoke Generation Unit
FIG. 9 is an explanatory view showing a second embodiment of the smoke generating portion provided in the sensitivity test apparatus from the plane and the side, and FIG. 9 (A) shows a plane and FIG. 9 (B) shows the side. FIG. 10 is an explanatory view showing the second embodiment of the smoke generating part provided in the sensitivity test apparatus as viewed from the front, and FIG. 11 is an explanatory view showing a liquid leakage preventing structure provided in the second embodiment of the sensitivity test apparatus .

(Summary of the smoke department)
As shown in FIGS. 9 and 10, the smoke generating portion 10 of the present embodiment is disposed on the upper case 14a side provided detachably at the upper opening of the box-shaped case main body 12. The outer frame portion 13a is projected to the front side from the upper opening edge of the case main body 12, and the outer frame portion 13b is projected to the front side from the lower opening edge of the upper case 14a correspondingly. The upper case 14a is placed on the opening of the case main body 12 and the outer frame portions 13a and 13b are fixed to each other by the screw 17 in a state in which the outer frames 13a and 13b are abutted. Such a fixing structure of the upper case 14 a to the main body case 12 is similarly provided on the rear end side of the case main body 12.

  As shown in FIG. 10B, in the upper case 14a, the inner frame portion 13c is formed inside the lower opening, and the smoke generation mechanism 11 is incorporated below the inner frame portion 13c. The smoke generation mechanism 11 is provided with a cup-shaped transparent container 24 in which the smoke agent 48 is stored, and a disk-shaped rubber sheet 25 functioning as an elastic sheet for liquid leakage prevention is provided at the upper opening of the transparent container 24. The circuit board 22 is disposed, and the transparent container 24 is fixed by screwing screws 27 at four places into the screw holes of the inner frame portion 13c of the upper case 12a via the rubber sheet 25 and the circuit board 22 in between. The rubber sheet 25 is bonded to the back surface of the circuit board 22 with an adhesive or a double-sided tape.

  As shown in FIG. 11, a through hole 25 is formed in the rubber sheet 25 adhered to the lower side of the circuit board 22, and a string-like core 26 is formed through the opening hole 22 a of the circuit board 22 with respect to the through hole 25. The tip end of the core 26 is dipped in the fuming agent 48 contained in the transparent container 24 through the both ends of the core material 26 and the fuming agent 48 is absorbed by capillary action to impregnate the core 26 with the smoking agent 48.

  Here, the hole diameter of the through hole 25a of the core 26 provided in the rubber sheet 25 is smaller than the outer diameter of the core 26, and the core 26 is squeezed when passing through the through hole 25a to bring it into close contact. As a result, the through hole 25a of the core member 26 is provided with a liquid leakage preventing structure for the smoke generating agent.

  A heater 30 is wound around a horizontal exposed portion of the core 26 positioned on the upper surface of the circuit board 22. The heater 30 is fixed by supporting screws 34 with a pair of coil support poles 32 standing on the circuit board 22 at both ends of the coil. Both ends of the coil are electrically connected to the circuit pattern of the circuit board 22 via the coil support pole 32, the lead wire 38 is connected to the right end of the circuit pattern, and the lead wire 38 is controlled by the connector 40 on the control board 96. It is connected to the.

  Further, a temperature sensor 44 is disposed on the substrate in the vicinity of the heater 30 supported by the circuit substrate 22 and connected to the lead wire 38 via the circuit pattern 42, and the control substrate 96 by the connector 40 of the lead wire 38. It is connected to the.

  As shown in FIG. 9A, a smoke outlet 16 having a rectangular opening is formed in the portion of the upper case 14a located on the top of the smoke generation mechanism 11 housed in the case main body 12.

  Further, the horizontal exposed portion of the core member 26 around which the heater 30 disposed on the circuit board 22 is wound covers the outside of the minute portion, the cylindrical guard case 15 is disposed, and the grid guard 15a is provided on the guard case 15 A smoke outlet disposed is formed to prevent a finger from touching and deforming the heater 30 inside and preventing the foreign matter from adhering. Further, an intake hole 15 b is formed as an intake structure at the side peripheral portion of the guard case 15. In addition, in place of the lattice guard 15a, a guard having a rough mesh structure may be provided at the smoke discharge port of the guard case 15.

  In the present embodiment, when replacing or replenishing the smoke generating agent 48 of the transparent container 26, when the screw 17 is loosened and the upper case 14a is removed from the case main body 12, the smoke is fixed to the inner frame portion 13c of the upper case 14a. The mechanism 11 can be taken out, the screw 27 is loosened, the transparent container 24 is removed, and the smoke agent 48 nozzle replacement or replenishment is performed.

  Also in this embodiment, the smoke filler inlet cap 46 having the structure shown in FIG. 6 is provided on the circuit board 22 and an open hole for inserting the injection needle of the syringe into the upper case 14a facing the smoke filler inlet cap 46 It is sufficient if the structure is formed.

Third Embodiment of the Smoke Generation Unit
FIG. 12 is an explanatory view showing a third embodiment of the smoke generating portion provided in the sensitivity test apparatus, and FIG. 12 (A) shows a plan view, and FIG. 12 (B) shows the guard case and smoke agent inlet cap outside. 12C shows a cross section viewed from the side in FIG.

  As shown in FIG. 12, the present embodiment shows the smoke detection mechanism 11 housed in the case of the smoke detection unit 10, and the smoke generation mechanism 11 is provided with a box-shaped transparent container 24 in which the smoke agent 48 is stored. In the upper part of the transparent container 24, a cylindrical guard case 84 is disposed and fixed. A smoke emission port 86 provided with a lattice guard 88 is opened at the upper end of the guard case 84, and an air intake hole 85 is formed in the side peripheral portion of the guard case 84 as an intake structure.

  Inside the guard case 84, a liquid leakage preventing cap 28 is attached to a through hole formed on the upper surface of the transparent container 24, and a bar-like core member 26 passes through the throttling hole 54 of the liquid leakage preventing cap 28 The heater 30 is wound around the vertically exposed portion of the core 26 taken out of the upper surface of the transparent container 24 by immersing it in the smoke agent 48 stored in the above.

  Both ends of the heater 30 are connected to a connector 40 fixed to the side wall of the guard case 84. The connector 40 is composed of a fixed outlet 40a and a detachable plug 40b. The heater 30 is connected to the outlet 40a. The lead 38 from the plug 40b is connected to the control board 96 shown in FIG. It is done.

  A smoke emission port 86 is opened at the top of the guard case 84 in which the atomizer (atomizer) composed of the heater 30 wound around the core material 26 is stored, and a lattice guard 88 is disposed at the smoke emission port 86 The finger on the heater 30 inside is prevented from being deformed or foreign matter being attached. The smoke outlet 16 may be provided with a coarse mesh guard in place of the lattice guard 18.

  In addition, on the upper surface of the transparent container 24, a smoke release agent injection cap 46 having a structure shown in FIG. 6 is disposed. Further, on the side surface of the transparent container 24, a scale 50 indicating the amount of the smoke emitting agent 48 is provided, showing an upper limit 50a, a lower limit 50b, an appropriate upper limit 50c and an appropriate lower limit 50d. The 48 can be managed easily and easily. The other configurations and functions are basically the same as those of the first embodiment shown in FIGS. 1 to 8.

  The smoke detector of the present embodiment can increase the volume of the transparent container 24, and can reduce the frequency of refilling the smoke agent 48.

  FIG. 13 is an explanatory view showing another example of the connector arrangement in the sensitivity test device of the second embodiment.

  In the embodiment shown in FIG. 13A, the connector portion 40 is disposed on the top surface of the transparent container 24 on the bottom side of the guard case 84. The connector 40 is constituted by a socket 40a on the fixed side and a plug 40b detachable, and the socket 40a is fixed to the upper surface of the transparent container 24 and located at a notch formed in the guard case 84. The lead wire 41 drawn out from 40 a is connected to the heater 30. The lead wire 38 is drawn out from the plug portion 40b and connected to the control board 96 shown in FIG.

  In the embodiment of FIG. 13B, the connector 40 is disposed on the upper surface of the transparent container 24 close to the guard case 84. That is, the outlet 40a of the outlet 40 is fixed to the upper surface of the transparent container 24, the lead wire 41 drawn from the outlet 40 is connected to the heater 30 via the guard case 84, and the lead 38 is connected from the plug 40b. It is drawn out and connected to the control board 96 shown in FIG.

  By disposing the connector 40 on the upper surface of the transparent container 24 in this manner, the plug portion 40b can be easily and easily attached to and detached from the outlet portion 40a, and the structure can be simplified by being separated from the guard case 84.

[Fourth embodiment of the smoke generation unit]
FIG. 14 is an explanatory view showing a fourth embodiment of the smoke generating portion provided in the sensitivity test apparatus, and FIG. 14 (A) shows a plan view, and FIG. 14 (B) shows a cross section seen from the side.

  As shown in FIG. 14, the present embodiment shows the smoke detection mechanism 11 housed in the case of the smoke detection unit 10, and the smoke generation mechanism 11 is provided with a box-shaped transparent container 24 in which the smoke agent 48 is stored. As in the embodiment of FIG. 12, a cylindrical guard case 90 is disposed and fixed to the upper portion of the transparent container 24. A smoke emission port 92 provided with a lattice guard 94 is opened at the upper end of the guard case 90, and an air intake hole 95 is formed in the side peripheral portion of the guard case 90 as an intake structure.

  Inside the guard case 90, a pair of liquid leakage preventing caps 28 are disposed, and both ends of the string-like core material 26 are passed through the liquid leakage preventing caps 28, and the tip of the core material 26 is accommodated in the transparent container 24 The fuming agent 48 is immersed in the agent 48, and the fuming agent 48 is sucked up by capillary action to impregnate the core 26 with the fuming agent 48.

  A heater 30 is wound around a horizontally exposed portion of the core 26 located on the upper surface of the transparent container 24, and both ends of the heater 30 are connected to a connector 40 fixed to the side wall of the guard case 90. The lead wires 38 are connected to the control board 96 shown in FIG.

  A smoke emission port 92 is opened at the top of the guard case 90 in which the atomizer (atomizer) composed of the heater 30 wound around the core material 26 is stored, and a lattice guard 94 is disposed at the smoke emission port 92 The finger on the heater 30 inside is prevented from being deformed or foreign matter being attached. The smoke outlet 92 may be replaced by a lattice guard 94 and a coarse mesh guard may be provided.

  In addition, a smoke filler inlet cap 46 is disposed on the upper surface of the transparent container 24, and the cap 46b is screwed and fixed to an inlet 46a formed integrally with the transparent container 24. In addition, you may provide the thing of the structure which does not require attachment or detachment of the cap shown in FIG. 5 as the smoke release agent inlet cap 46 of this embodiment.

  Further, on the side surface of the transparent container 24, a scale 50 indicating the amount of the smoke emitting agent 48 is provided, showing an upper limit 50a, a lower limit 50b, an appropriate upper limit 50c and an appropriate lower limit 50d. The 48 can be managed easily and easily. The other configurations and functions are basically the same as those of the first embodiment shown in FIGS. 1 to 8.

  The smoke detector according to the present embodiment is suitable when the smoke detector 10 is provided in the sensitivity test apparatus 100 shown in FIG.

  Further, the outlet 40 may be disposed on the upper surface side of the transparent container 24 separately from the smoke storage portion 90, as shown in FIG.

[Modification of the present invention]
(Control unit)
In the above embodiment, the control of the amount of current supplied to the heater is performed by PWM control. However, the present invention is not limited to this, and voltage control or current control may be performed.

(Fuming agent)
Also, the fuming agent may be mixed with a thickening additive. This can further prevent the fuming agent from leaking from the container.

(Others)
In the above embodiment, the guard case has a lattice shape or a mesh shape, but it is also possible to adopt a shape that facilitates various processes, such as a slit shape or a punching hole shape.

  In the above embodiment, the smoke container is a transparent container, but it may be a translucent container having a transparency enough to confirm the amount of smoke generation material.

  Furthermore, the present invention includes appropriate modifications that do not impair the objects and advantages thereof, and is not limited by the numerical values shown in the above embodiment.

10: smoke generation unit 11: smoke generation mechanism 12: case main body 14: case cover 15, 84, 90: guard case 15b, 85, 95: air suction hole 16, 86, 92: smoke discharge port 18, 88, 94: lattice guard 20 : Handle 22: Circuit board 24: Transparent container 25: Rubber sheet 26: Core material 28: Liquid leakage prevention cap 30: Heater 32: Heater support pole 34: Screw 36, 42: Circuit pattern 38, 41: Lead wire 40: Connector 40a: outlet portion 40b: plug portion 44: temperature sensor 46: smoke release agent cap 48: smoke release 50: scale 52: through hole 54: throttle hole 56: cap body 58: rubber cap 60: taper-hole 62: seal Layer 64: power supply unit 66: constant voltage circuit 68: feedback circuit 70: PWM circuit 72: heater drive circuit 74: error amplifier 76: reference voltage Source 78: triangular wave generator 80: PWM comparator 100: sensitivity test device 101: test space 102: housing 104: opening / closing lid 106: circulation fan 108: rectifying plate 112: concentration detector 116: operation panel 118: child door 122: Power switch 124: Voltage adjustment knob 126: Photoelectric zero adjustment knob 127: Ion zero adjustment knob 128: Densitometer switch 130: Power indicator 132: Alarm indicator light 134: Sensor voltmeter 136: Concentration meter 140: Smoke detector 142: Sensor base

Claims (12)

In a sensitivity test apparatus for testing smoke detector sensitivity by supplying smoke to a test space provided with a smoke sensor to be tested in a housing.
The smoke department is
A non-combustible core material impregnated with the smoke agent;
A heater for heating the fuming agent impregnated in the core material to generate smoke;
A guard case which is disposed to cover the outside of the heater and the portion of the core material heated by the heater, and which has a smoke outlet formed at the top;
A control unit that generates smoke by heating the fuming agent impregnated in the core material by energization of the heater according to a predetermined operation;
A sensitivity test apparatus characterized by comprising:
In the sensitivity test device according to claim 1,
A smoke testing apparatus according to any of the preceding claims, wherein the smoke emission port of the guard case is any of lattice, mesh, slit, punching hole or a composite form thereof.
In the sensitivity test device according to claim 1,
A sensitivity test device characterized in that a side peripheral portion of the guard case has an intake structure.
In the sensitivity test device according to claim 1,
The sensitivity test apparatus, wherein the smoke generation unit is provided detachably with respect to the housing.
The sensitivity test apparatus according to any one of claims 1 to 4,
The smoke generation unit further includes a container containing a smoke release agent and provided with a smoke release agent inlet.
The container of the smoke generating part is a transparent or translucent container whose top surface is opened,
The opening of the transparent or translucent container is closed by the arrangement of the circuit board,
In the pair of core material through holes formed in the circuit board, the core material is immersed in the smoke agent contained in the container through both ends of the string-like core material,
The heater is wound around a horizontally exposed portion of the core material located on the upper surface of the circuit board,
Both ends of the heater are supported and fixed to a pair of terminal members erected on the circuit board, and are connected to a conduction pattern formed on the circuit board,
The guard case is disposed so as to cover the outside of the horizontal exposed portion of the core material around which the heater disposed on the circuit board is wound.
A connector unit for connecting the heater to the control unit is provided at a portion of the circuit board which is the outside of the guard case.
Furthermore, the circuit board is provided with the smoke release agent inlet.
The sensitivity test apparatus according to any one of claims 1 to 4,
The smoke generation unit further comprises a container containing a smoke release agent,
The container of the smoke generating part is a transparent or translucent container whose top surface is opened,
The opening of the transparent or translucent container is closed by the arrangement of the circuit board,
A liquid leakage prevention sheet is disposed between the transparent or translucent container and the circuit board,
In the pair of core material through holes formed in the liquid leakage prevention sheet, the smoke forming agent stored in the transparent or translucent container through both ends of the string-like core material through the opening hole of the circuit board Dipped and
The heater is wound around a horizontally exposed portion of the core material located on the upper surface of the circuit board,
Both ends of the heater are supported and fixed to a pair of terminal members erected on the circuit board, and are connected to a conduction pattern formed on the circuit board,
The guard case is disposed so as to cover the outside of the horizontal exposed portion of the core material around which the heater disposed on the circuit board is wound.
The circuit board of the control unit which is the outside of the guard case is provided with a connector unit for connecting the heater to the control unit.
The sensitivity test apparatus according to any one of claims 1 to 4,
The smoke generation unit further includes a container containing a smoke release agent and provided with a smoke release agent inlet.
The container of the smoke generating part is a transparent or translucent container whose upper surface is closed,
In the core material through hole formed on the upper surface of the transparent or translucent container, the lower end is dipped in the smoke absorbing agent stored in the container through the rod-like core material,
The heater is wound around a vertically exposed portion of the core material taken out of the upper surface of the transparent or translucent container,
The guard case is disposed on the upper surface of the transparent or translucent container so as to cover the outside of the vertically exposed portion of the core material around which the heater is wound;
A connector unit for connecting the heater to the control unit is provided outside the guard case,
Furthermore, the smoke testing agent injection port is provided on the upper surface of the transparent or translucent container.
The sensitivity test apparatus according to any one of claims 1 to 4,
The smoke generation unit further includes a container containing a smoke release agent and provided with a smoke release agent inlet.
The container of the smoke generating part is a transparent or translucent container whose upper surface is closed,
The pair of core material through holes formed on the upper surface of the transparent or translucent container is dipped in the smoke-retaining agent stored in the container through both ends of the string-like core material,
The heater is wound around the horizontally exposed portion of the core material taken out of the upper surface of the transparent or translucent container,
The guard case is disposed on the upper surface of the transparent or translucent container so as to cover the outside of the horizontal exposed portion of the core material around which the heater is wound;
A connector unit for connecting the heater to the control unit is provided outside the guard case,
Furthermore, the smoke testing agent injection port is provided on the upper surface of the transparent or translucent container.
9. The sensitivity test device according to claim 5, wherein the core material through hole and the smoke agent inlet are respectively provided with a liquid leakage prevention structure for a smoke agent.
The sensitivity test apparatus according to any one of claims 5 to 8, wherein the transparent or translucent container is provided with a predetermined scale indicating the amount of the fuming agent. .
The sensitivity test apparatus according to claim 1, wherein the control unit controls a duty ratio of a drive signal to the heater such that the smoke concentration in the test space detected by the concentration detector maintains a predetermined reference value. Sensitivity test equipment characterized by
  The sensitivity test device according to claim 1, wherein the smoke generating agent is a water-soluble liquid containing at least one component of propylene glycol, glycerin, dipropylene glycol, tripropylene glycol or glycol. Test equipment.

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