JP2012198755A - Smoke tester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a smoke tester capable of stably performing atomization by stabilizing a distance from a surface of an ultrasonic vibrator to a liquid level.SOLUTION: In a smoke tester 1, in which a smoke generator 5 is atomized by an ultrasonic vibrator 11 in a storage tank 7 storing the smoke generator 5 therein to generate aerosol and the generated aerosol is made to be discharged outside from the storage tank 7 by ventilation to perform a test of a smoke detector, the storage tank 7 includes an intake/exhaust pipe 39 on its ceiling surface side, and the intake/exhaust pipe 39 is composed of an outer cylindrical body 45 formed to extend downward from the ceiling surface 37 and having an opening 43 at the lower part, an inner cylindrical body 47 inserted into the inner side of the outer cylindrical body 45 with a gap 35 and used as an exhaust passage of the aerosol, and a bottom plate 49 closing a gap between a lower end surface of the inner cylindrical body 47 and a lower end surface of the outer cylindrical body 45.

Description

  The present invention relates to a smoke tester used for a smoke sensor smoke test.

  The smoke detector smoking test is to supply smoke or pseudo smoke to the smoke detector and perform an operation test thereof. As an example of a smoke tester used in such a smoke test, Patent Document 1 discloses an ultrasonic vibration in which liquid paraffin (hereinafter referred to as “smoke material”) in a liquid tank is installed at the bottom of the liquid tank. There has been proposed a “smoke detector test device” that is atomized by a child to generate pseudo smoke (hereinafter referred to as “aerosol”) and supplies the smoke to a smoke detector.

  In the smoke detector test apparatus described in Patent Document 1, the air blown by the electric fan is taken into the liquid tank from the carrier air supply port provided in the liquid tank, and the aerosol generated in the liquid tank by the air blow is taken from the transport pipe. It is trying to discharge.

JP 59-186093 Hei

As described above, in Patent Document 1, air is taken into the liquid tank, and the aerosol generated in the liquid tank is discharged from the transport pipe. For this reason, the liquid tank has a structure that communicates with the outside of the liquid tank through the transport air supply port and the transport pipe.
In such a structure, it is necessary to prevent the smoke generating material in the liquid tank from being discharged to the outside from the carrier air supply port and the carrier pipe. However, Patent Document 1 does not describe anything about this point.
In this regard, it may be possible to install a check valve on the transfer air supply port or transfer pipe, but the structure is complicated, and the check valve ensures that the fuming material flows out to the outside. It is not always possible to prevent this.

  The present invention has been made to solve such a problem, and an object of the present invention is to obtain a smoke addition tester capable of reliably preventing the smoke generating material from flowing out of the storage tank storing the smoke generating material.

(1) In the smoke tester according to the present invention, the smoke generating material is atomized by an ultrasonic vibrator in a storage tank in which the smoke generating material is stored to generate an aerosol, and the generated aerosol is blown to the storage tank. A smoke tester for discharging smoke to the outside and testing the smoke detector,
The storage tank includes an air supply / exhaust tube on the ceiling surface side, and the air supply / exhaust tube is formed to extend downward from the ceiling surface and has an opening at a lower portion thereof, and the outer tube An inner cylinder that is inserted into the body through a gap and serves as an aerosol discharge path, and a bottom plate that closes the gap between the lower end surface of the inner cylinder and the lower end surface of the outer cylinder. It is characterized by this.

(2) Further, in the above-described (1), the ultrasonic vibrator and the air supply / exhaust cylinder so that the center of the vibration surface of the ultrasonic vibrator and the central axis of the air supply / exhaust cylinder are shifted from each other. It is characterized by having arranged.

In the present invention, the storage tank is provided with an air supply / exhaust tube on the ceiling surface side, and the air supply / exhaust tube is formed so as to extend downward from the ceiling surface, and has an outer cylindrical body having an opening in the lower portion, The inner cylinder is inserted into the outer cylinder through a gap and serves as an aerosol discharge path, and includes a lower end face of the inner cylinder, a lower end face of the outer cylinder, and a bottom plate that closes the gap. ing.
For this reason, it is possible to reliably prevent the smoke generating material in the storage tank from flowing out of the storage tank without providing a check valve or the like.

It is explanatory drawing of the smoke tester which concerns on one embodiment of this invention. It is explanatory drawing of the use condition of the smoke tester which concerns on one embodiment of this invention. It is operation | movement explanatory drawing of the smoke tester which concerns on one embodiment of this invention. It is operation | movement explanatory drawing in the use condition of the smoke tester which concerns on one embodiment of this invention (the 1). It is operation | movement explanatory drawing in the use condition of the smoke tester which concerns on one embodiment of this invention (the 2). It is explanatory drawing explaining the effect of the supply / exhaust cylinder of the smoke tester which concerns on one embodiment of this invention (the 1). It is explanatory drawing explaining the effect of the air supply / exhaust pipe | tube of the smoke tester which concerns on one embodiment of this invention (the 2). It is explanatory drawing explaining the effect of the supply / exhaust cylinder of the smoke tester which concerns on one embodiment of this invention (the 3). It is explanatory drawing explaining the effect of the supply / exhaust cylinder of the smoke tester which concerns on one embodiment of this invention (the 4). It is explanatory drawing explaining the effect of the supply / exhaust pipe | tube of the smoke tester which concerns on one embodiment of this invention (the 5). It is explanatory drawing explaining the effect regarding arrangement | positioning of the division tank of the smoke tester which concerns on one embodiment of this invention (the 1). It is explanatory drawing explaining the effect regarding arrangement | positioning of the division tank of the smoke tester which concerns on one embodiment of this invention (the 2). It is explanatory drawing of the other aspect of arrangement | positioning of the division tank of the smoke tester which concerns on one embodiment of this invention. It is the figure seen from the arrow AA direction of FIG. FIG. 14 is a plan view of FIG. 13. It is explanatory drawing of the other aspect of arrangement | positioning of the division tank of the smoke tester which concerns on one embodiment of this invention. It is explanatory drawing of the other aspect of the smoke tester which concerns on one embodiment of this invention.

The main configuration of the smoke tester 1 according to the present embodiment will be described. As shown in FIG. 1, the housing 3 to which the handle 23 is attached and the smoke generating material 5 stored in the housing 3 are stored. A storage tank 7, a partition tank 9 that is erected in the storage tank 7 and has an open upper end, an ultrasonic transducer 11 that is installed below the partition tank 9, and a smoke generating material 5 on the storage tank 7 side. And a control means for controlling the operation of the ultrasonic vibrator 11 by circulating the smoke generating material 5 between the storage tank 7 side and the partition tank 9 side by sucking Is provided with a control board 15, a blower fan 17, and a blower chamber 19 in which the blower fan 17 is installed.
Then, the smoke tester 1 generates an aerosol by atomizing the smoke generating material 5 by the ultrasonic vibrator 11 in the storage tank 7 storing the smoke generating material 5, and the generated aerosol is stored in the storage tank by blowing air from the blower fan 17. The test is carried out by discharging from 7 to the outside with the smoke detector.

<Housing>
The housing 3 is formed of, for example, a rectangular box-like body, and accommodates devices such as the storage tank 7, the circulation pump 13, the control board 15, the blower fan 17, and the battery 21 therein.
On one side of the housing 3, a handle 23 for the operator to hold the housing 3 is provided. The handle 23 is formed in a substantially U shape, and an operation switch 25 for operation is provided on the top thereof.
On the side surface of the housing 3, an air supply port 27 for taking outside air into the housing 3 is provided, and a blower chamber 19 in which a blower fan 17 is installed in a portion communicating with the air supply port 27 is provided.

<Reservoir>
The storage tank 7 is a substantially cylindrical container that is provided in the housing 3 of the smoke tester 1, has a ceiling surface 37 and a bottom portion 28, and stores a predetermined amount of the smoke generating material 5. On the bottom portion 28 side of the storage tank 7, a base portion 29 having a bottom surface is provided at a position higher than the bottom portion 28, and a partition tank 9 having an open top is installed on the base portion 29.
A concave portion 31 that communicates with the partition tank 9 is provided at the center of the base portion 29, and the ultrasonic transducer 11 is disposed on the bottom surface of the concave portion 31. A side surface of the base portion 29 is provided with a through hole 33 that communicates with the recessed portion 31 and extends in the lateral direction, and the through hole 33 serves as a supply path for the smoke generating material 5.
The through-hole 33 may be provided on the side surface of the partition tank 9 as long as the smoke generating material 5 can be supplied to the partition tank 9.

The storage tank 7 includes a supply / exhaust tube 39 formed on the ceiling surface side so as to extend downward from the ceiling surface 37. The air supply / exhaust cylinder 39 has a function of supplying the air blown from the blower fan 17 to the storage tank 7 and discharging the aerosol 41 generated in the storage tank 7 described later to the outside.
The air supply / exhaust cylinder 39 is formed so as to extend downward from the ceiling surface 37, and has an outer cylinder body 45 having an upper end opened and an opening 43 on the lower side surface, and an outer cylinder body 45 and a gap 35. An inner cylinder 47 that is disposed so as to be inserted into the cylinder 45 and serves as a discharge path for the aerosol 41, and a bottom plate 49 that blocks between the lower end surface of the inner cylinder 47 and the lower end surface of the outer cylinder 45. Configured.
More specifically, the outer cylinder 45 is formed so as to extend downward from the ceiling surface 37 of the storage tank 7 to the vicinity of the center in the height direction of the storage tank 7, and has an opening 43 on the lower side surface thereof. is doing. That is, the opening 43 is formed near the center in the height direction of the storage tank 7 so as to face the side surface of the storage tank 7. Furthermore, the inner cylinder 47 is arranged so that its central axis is inserted through the annular gap 35 at a position substantially the same as the central axis of the outer cylinder 45, and its upper end is exposed to the outside from the housing 3. It is formed in the length to do.

On the exit side of the inner cylinder 47, for example, a stretchable tube member 51 is connected so that the aerosol 41 can be guided to the smoke detector 53 side.
As shown in FIG. 2, the pipe member 51 has a tapered shape at the distal end, and the operator holds the proximal end side of the pipe member 51 and brings the distal end side closer to the smoke inlet of the smoke detector 53. Perform operational tests.
A predetermined amount of smoke generating material 5 is enclosed in the storage tank 7. This predetermined amount is such an amount that the smoke generating material 5 does not flow out to the outside when the casing 3 described later is tilted. In order to enclose the smoke generating material 5 by a predetermined amount, it is preferable to provide an enclosing amount confirmation means for confirming the amount of the smoke generating material 5 enclosed in the side surface of the storage tank 7. The enclosing amount confirmation means is formed of a transparent material such as acrylic, for example, a window part that communicates the housing 3 and the storage tank 7, a scale provided in the window part, and a smoke leveling material 5 such as a water level sensor. Anything can be used as long as the amount can be confirmed.

  The smoke generating material 5 stored in the storage tank 7 is a solution for generating the aerosol 41 and may be, for example, liquid paraffin listed in the conventional example, but generally water (such as tap water). Or it is preferable to use the thing etc. which mixed water with the chemical | medical agent with a small global warming coefficient, such as glycerol and propylene glycol.

<Division tank>
The partition tank 9 is erected on the platform 29 in the storage tank 7. The partition tank 9 is open at the upper end, and the upper end surface 9a of the partition tank 9 is inclined so that the handle 23 side is low and the side facing it is high. The reason why the upper end surface 9a of the partition tank 9 is inclined is that, in the use state of the smoke tester 1, as shown in FIGS. 2 and 4, the housing 3 is inclined with the handle 23 side. This is because the liquid surface can be held almost horizontally by raising the lower side wall in the inclined state.
Further, in this embodiment, the ultrasonic transducer 11 installed in the partition tank 9 is arranged such that the central axis thereof is shifted from the central axis of the inner cylinder 47 of the air supply / exhaust cylinder 39 toward the handle 23. The effect of arranging the ultrasonic transducer 11 in this way will be described later.
A liquid level sensor 55 that detects the lower limit of the liquid level in the compartment 9 is installed on the inner surface of the compartment 9.
The liquid level sensor 55 includes a plus electrode 55a and a minus electrode 55b which are arranged on the inner surface side of the partition tank 9 with a distance in the circumferential direction. When these electrodes are energized by the smoke generating material 5, it is detected that the smoke generating material 5 is present. On the other hand, when the liquid level drops and any of the electrodes is exposed from the smoke generating material 5, the current is cut off and the liquid level is A drop is detected.

<Ultrasonic transducer>
The ultrasonic transducer 11 is disposed below the partition tank 9 and at the bottom of the recessed portion 31 in the base portion 29. The ultrasonic vibrator 11 atomizes the smoke generating material 5 by applying ultrasonic vibration to the smoke generating material 5 in the partition tank 9 to generate the aerosol 41.

<Circulation pump>
The circulation pump 13 is installed below the storage tank 7 in the housing 3. The circulation pump 13 is connected to a suction passage 57 for sucking the smoke generating material 5 in the storage tank 7 and a discharge passage 59 for discharging the sucked smoke generating material 5. The discharge path 59 is connected to a through hole 33 formed in the base portion 29.
The circulation pump 13 is always driven by turning on the operation switch 25. By driving the circulation pump 13, the smoke generating material 5 in the storage tank 7 is sucked in through the suction path 57 and is continuously supplied into the partition tank 9 through the discharge path 59 and the through hole 33. The smoke generating material 5 supplied to the partition tank 9 overflows from the upper opening of the partition tank 9 and returns to the storage tank 7. In this way, the smoke generating material 5 is circulated in the storage tank 7 and the partition tank 9 by the circulation pump 13. For this reason, the height of the liquid level in the partition tank 9 is always kept at the lowest height of the opening of the partition tank 9. For this reason, the distance from the surface of the ultrasonic transducer 11 to the liquid level is always kept constant, and therefore, stable atomization can always be performed.

<Control board>
The control board 15 is installed below the storage tank 7 in the housing 3. The control board 15 is equipped with a control means (not shown) for controlling the operation of the ultrasonic transducer 11. When the liquid level sensor 55 detects that the liquid level in the partition tank 9 has fallen below the lower limit, the control means stops the ultrasonic transducer 11.
The control board 15 is also equipped with other control means (not shown) for driving and controlling the circulation pump 13 and the blower fan 17.

<Blower fan>
The blower fan 17 takes outside air into the housing 3 from the air supply port 27 and blows air. Since the inside of the housing 3 and the storage tank 7 communicate with each other through the gap 35, the air blown by the blower fan 17 passes through the housing 3 and is supplied to the supply / exhaust cylinder 39 provided on the upper part of the storage tank 7. It passes through the gap 35 between the outer cylinder 45 and the inner cylinder 47 and is supplied into the storage tank 7 from the opening 43. The air supplied into the storage tank 7 is discharged from the inner cylinder 47 constituting the supply / exhaust cylinder 39 together with the aerosol 41 generated in the storage tank 7.
The air generated by the blower fan 17 has a function of air-cooling devices such as the circulation pump 13, the control board 15, the blower fan 17, and the battery 21 installed in the housing 3.

The operation of the smoke tester 1 of the present embodiment configured as described above will be described.
By turning on the operation switch 25, the blower fan 17 and the circulation pump 13 are driven.
When the blower fan 17 is driven, outside air is taken into the housing 3 from the air supply port 27, and the taken-in air passes through the gap 35 between the outer cylinder body 45 and the inner cylinder body 47 of the air supply / exhaust cylinder 39, It is supplied into the storage tank 7 from the opening 43.
Further, when the circulation pump 13 is driven, the smoke generating material 5 in the storage tank 7 is supplied to the partition tank 9. When the smoke generating material 5 is supplied to the partition tank 9, the liquid level in the partition tank 9 rises, and the plus electrode 55a and the minus electrode 55b of the liquid level sensor 55 are energized by the smoke generating material 5, the liquid level sensor 55 detects. A signal is transmitted to the control means. When the detection signal of the liquid level sensor 55 is input, the control means transmits a control signal for driving the ultrasonic transducer 11 to the ultrasonic transducer 11, thereby driving the ultrasonic transducer 11.

  When the ultrasonic vibrator 11 is driven, the smoke generating material 5 in the partition tank 9 is atomized and an aerosol 41 is generated. The generated aerosol 41 is supplied to the pipe member 51 via the inner cylinder 47 of the air supply / exhaust cylinder 39 by the wind from the blower fan 17 supplied into the storage tank 7, and further detects smoke via the pipe member 51. Is guided to the vessel 53.

By generating the aerosol 41 by driving the ultrasonic vibrator 11, the smoke generating material 5 in the compartment tank 9 is consumed. The smoke generator 5 is always supplied to the compartment tank 9 by the circulation pump 13. As a result, the distance from the surface of the ultrasonic transducer 11 to the liquid level is always kept constant, so that stable atomization can always be achieved.
In addition, if the smoke tester 1 is largely tilted and returned to its original state while the ultrasonic vibrator 11 is being driven, the level of the liquid level of the smoke generating material 5 in the compartment 9 is lowered as shown in FIG. . In this case, since it is detected by the liquid level sensor 55 that the smoke generating material 5 is less than a predetermined amount in the partition tank 9, while the smoke generating material 5 is supplied to the position of the liquid level sensor 55 by the circulation pump 13, The ultrasonic transducer 11 stops.
Stopping the ultrasonic transducer 11 prevents the ultrasonic transducer 11 from being driven when the amount of the smoke generating material 5 is small.

  As described above, the smoke tester 1 according to the present embodiment includes the partition tank 9 in the storage tank 7 so that the smoke generating material 5 is circulated between the storage tank 7 side and the partition tank 9 side. As a result, the distance from the surface of the ultrasonic transducer 11 to the liquid level is always kept constant, and therefore, stable atomization can always be performed.

  The smoke tester 1 supplies air to the storage tank 7 and discharges the aerosol 41 generated in the storage tank 7 to the outside. Therefore, it is necessary to provide an air inlet and an aerosol 41 outlet. Therefore, it is necessary to prevent the smoke generating material 5 in the storage tank 7 from flowing out from the suction port and the discharge port. Moreover, since the smoke tester 1 is carried around, the housing 3 may tilt in the process, or the housing 3 may fall down when temporarily placed, so the smoke generating material in the storage tank 7 It is necessary to reliably prevent the outflow of 5.

In this regard, as described above, the air supply / exhaust cylinder 39 provided in the storage tank 7 of the present embodiment extends downward from 37 of the storage tank 7 to the vicinity of the center in the height direction and has an opening 43 on the lower side surface. An outer cylinder 45, an inner cylinder 47 that is disposed inside the outer cylinder 45 in parallel with the outer cylinder 45 and serves as a discharge path for the aerosol 41, a lower end surface of the inner cylinder 47, and the outer cylinder 45. Since the bottom plate 49 that closes the lower end surface of the storage tank 7 is provided, the smoke generating material 5 in the storage tank 7 does not flow out of the storage tank 7 to the outside.
This point will be described below with reference to the drawings in accordance with the inclination of the housing 3.
6, 7, 9, and 10 show a state in which the smoke tester 1 of the present embodiment is continuously rotated by 45 degrees vertically from the center of the housing 3. Represents.

As shown in FIG. 6, when the casing 3 is inclined by about 45 degrees and the smoke generating material 5 in the partition tank 9 is discharged to the storage tank 7 side, only a predetermined amount of the smoke generating material 5 is enclosed in the storage tank 7. Further, since the lower end of the inner cylinder 47 extends only to the vicinity of the center in the height direction of the storage tank 7, the liquid level of the smoke generating material 5 does not hang on the lower end of the inner cylinder 47, so There is no spillage. At this time, the smoke generating material 5 continues to be supplied from the circulation pump 13, but since the smoke generating material 5 is discharged from the partition tank 9, the liquid level sensor 55 is not energized. Water column is not generated because is controlled to stop. Therefore, the smoke generating material 5 does not flow out from the opening 43 provided on the side surface of the outer cylinder 45.
Next, as shown in FIG. 7, a case where the casing 3 is tilted 90 degrees and laid down will be considered. Under the present circumstances, the lower end of the inner cylinder 47 provided in the substantially center axis | shaft shape of the housing | casing 3 exists in a position higher than the liquid level of the smoke generating material 5 enclosed by the predetermined amount in the storage tank 7. FIG. That is, since it is provided on the substantially central axis of the housing 3, the liquid level of the smoke generating material 5 does not hang on the inner cylinder 47 and accumulates on the side wall side in the storage tank 7, so that it does not flow outside. .
Even if the housing 3 is rotated so that the handle 23 lies sideways from the state shown in FIG. 7, the lower end of the inner cylinder 47 is provided on the central axis of the storage tank 7 as shown in FIG. 8. Therefore, the liquid level of the smoke generating material 5 is in the gap between the side wall of the storage tank 7 and the outer cylindrical body 45 and does not flow out to the outside. Further, even if the housing 3 is further rotated from the state shown on the left side of FIG. 8 and the opening 43 is on the lower side, the smoke generating material 5 is sealed in the storage tank 7 only in a predetermined amount. The liquid level is in the gap between the side wall of the storage tank 7 and the outer cylinder 45 and does not flow into the opening 43, so it does not flow out.

In a state where the housing 3 is further tilted and inclined 45 degrees downward, that is, in a state where the side wall and the ceiling surface 37 of the storage tank 7 are at the bottom, the smoke generating material 5 is contained in the storage tank 7 as shown in FIG. Although it accumulates on the side wall side and the ceiling surface 37 side, even in this case, unless the smoke generating material 5 is forced to flow into the opening 43 of the outer cylinder 45, only a predetermined amount of the smoke generating material 5 is enclosed in the storage tank 7. Since the lower end of the inner cylinder 47 extends to the vicinity of the center in the height direction of the storage tank 7, it does not flow out to the outside.
Further, in a state where the casing 3 is turned upside down, that is, in a state where the ceiling surface 37 of the storage tank 7 is turned down, the smoke generating material 5 is stored in the storage tank 7 with the ceiling surface 37 as a bottom surface as shown in FIG. However, even in this case, the smoke generating material 5 is sealed only in a predetermined amount in the storage tank 7, and the lower end of the inner cylinder 47 extends to the vicinity of the center in the height direction of the storage tank 7. Since the liquid surface of the smoke generating material 5 does not reach the opening 43 of the outer cylinder 45, it does not flow out.
That is, the lower end of the opening 43 and the inner cylinder 47 is provided at a position higher than the liquid level of the predetermined amount of smoke generating material 5 enclosed in the storage tank 7 when the casing 3 is rotated. The material 5 does not flow out to the outside. Furthermore, since the predetermined amount of the smoke generating material 5 is set to an amount at which the liquid level is lower than the lower end of the opening 43 and the inner cylinder 47 when the casing 3 is rotated, the smoke generating material 5 is exposed to the outside. There is no spillage.
Thus, the smoke generating material 5 is unlikely to flow out to the outside due to the relationship between the opening 43 and the lower end of the inner cylinder 47 and the amount of the smoke generating material 5.

Next, regarding the operational effect of the ultrasonic vibrator 11 installed on the bottom side of the partition tank 9 being arranged so that the center of the ultrasonic vibrator 11 is shifted from the central axis of the air supply / exhaust tube 39 toward the handle 23 side. explain.
FIG. 11 shows a state in which the ultrasonic transducer 11 is arranged directly below the inner cylinder 47, that is, so that the vertical center axis of the ultrasonic transducer 11 and the axis of the inner cylinder 47 coincide. When the ultrasonic vibrator 11 is driven, the liquid column 61 stands from the liquid surface of the compartment 9 as shown in FIG. Since the smoke generating material 5 is atomized from the surface of the liquid column 61, the larger the surface area, the more efficiently the atomization. Therefore, it is necessary not to hit the bottom surfaces of the inner cylinder 47 and the outer cylinder 45. For this reason, in the example of FIG. 11, the length of the vertical direction of the housing 3 is enlarged, and the distance of a bottom face and the division tank 9 is separated. However, if it does in this way, the housing 3 will become vertically long and will enlarge as a whole.
Therefore, as in the present embodiment, the partition tank 9 is arranged so that the center of the partition tank 9 is shifted from the center of the inner cylinder 47 provided on the ceiling surface 37 side to the handle 23 side, thereby ultrasonic vibration. The center of the child 11 is shifted from the central axis of the inner cylinder 47. As a result, as shown in FIG. 12, the liquid column 61 rises between the outer cylinder 45 and the side wall of the storage tank 7, and the liquid column 61 does not contact the bottom plate 49 of the air supply / exhaust cylinder 39. For this reason, the distance of the division tank 9 and the outer cylinder 45 can be made closer than the example of FIG. 11, As a result, the stable liquid column 61 can be formed and the housing 3 can be reduced in size.
More specifically, the liquid column 61 rising from the partition tank 9 is arranged so that the axis of the partition tank 9 is located outside the outer periphery of the supply / exhaust cylinder 39 or the outer cylinder 45. Therefore, the housing 3 can be downsized in the height direction. Further, the lateral direction of the housing 3 can be reduced to the extent that it does not hit the liquid column 61.
In other words, the axis of the partition tank 9 only needs to be shifted from the axis of the air supply / exhaust tube 39. More specifically, the axis of the partition tank 9 is between the outer periphery of the air supply / exhaust tube 39 and the inner periphery of the housing 3. It is preferable that it exists in. Furthermore, the space between the outer periphery of the air supply / exhaust tube 39 and the inner periphery of the housing 3 may be a space of about the liquid column 61 rising from the partition tank 9.

In the above example, the example in which the ultrasonic transducer 11 is shifted to the handle 23 side is shown, but the direction in which the ultrasonic transducer 11 is shifted is as shown in FIGS. 13, 14, and 15. You may make it shift to the direction orthogonal to 23 directions. By doing in this way, the distance between the liquid column 61 and the side surface of the storage tank 7 can be increased, and the liquid column 61 is also formed when the casing 3 is tilted as in the usage state of the smoke tester 1. Since it becomes difficult to contact | abut to the side surface of the storage tank 7, the aerosol 41 can be produced | generated effectively.
Further, the direction in which the ultrasonic transducer 11 is displaced is not limited to the above case. As shown in FIG. 16, the liquid column is ejected on the side surface of the storage tank 7 and the outer cylinder 45 of the supply / exhaust cylinder 39. It may be determined by adjusting to be between.

  As described above, in the present embodiment, it is possible to reliably prevent the smoke generating material 5 in the storage tank 7 from flowing out to the outside with a simple structure without providing a check valve or the like.

In addition, another liquid level sensor (not shown) may be provided at the bottom of the storage tank 7 so that the liquid level sensor can detect that the smoke generating material 2 in the storage tank 7 has decreased. When the liquid level sensor detects that the smoke generating material 5 is less than a predetermined amount, the light emitting means (not shown) emits light so as to prompt the worker to replenish the smoke generating material in the storage tank. May be.
Further, an AND signal of a signal indicating that the amount of liquid in the storage tank 7 is reduced by the water level sensor for detecting the remaining smoke generating material 5 in the storage tank 7 and a signal indicating a decrease in the liquid level of the liquid level sensor 55 in the partition tank 9. May be automatically turned off by a control means (not shown). Thereby, even if the smoke generating material 5 in the smoke tester 1 is completely lost, the blower fan 17 does not have to be kept moving, so that the test can be performed efficiently without using the power source more than necessary.

In the above embodiment, an example in which the handle 23 is attached to the housing 3 has been shown. However, as shown in FIG. 17, for example, a shoulder strap 63 may be provided without providing a handle.
Further, as shown in FIG. 17, only the proximal end side of the tube member 51 may be formed of a flexible member, and in this way, the operability of the tube member 51 is improved.
Further, the entire pipe member 51 may be formed of a member having flexibility. In that case, a separate holding means for holding the tip portion by the smoke detector 53 attached to the ceiling surface 37 is provided. What should I do?

DESCRIPTION OF SYMBOLS 1 Smoke tester 3 Housing 5 Smoke material 7 Storage tank 9 Compartment tank 9a Upper end surface 11 Ultrasonic vibrator 13 Circulation pump 15 Control board 17 Blower fan 19 Blower chamber 21 Battery 23 Handle 25 Operation switch 27 Air inlet 28 Bottom 29 Base part 31 Recessed part 33 Through-hole 35 Crevice 37 Ceiling surface 39 Supply / exhaust cylinder 41 Aerosol 43 Opening part 45 Outer cylinder body 47 Inner cylinder body 49 Bottom plate 51 Pipe member 53 Smoke detector 55 Liquid level sensor 55a Plus electrode 55b Negative electrode 57 Suction path 59 Drain path 61 Liquid column 63 Shoulder strap

Claims (2)

In the storage tank in which the smoke generating material is stored, the smoke generating material is atomized by an ultrasonic vibrator to generate an aerosol, and the generated aerosol is discharged from the storage tank by blowing to test the smoke detector. A smoke tester,
The storage tank includes an air supply / exhaust tube on the ceiling surface side, and the air supply / exhaust tube is formed to extend downward from the ceiling surface and has an opening at a lower portion thereof, and the outer tube An inner cylinder that is inserted into the body through a gap and serves as an aerosol discharge path, and a bottom plate that closes the gap between the lower end surface of the inner cylinder and the lower end surface of the outer cylinder. A smoke tester characterized by that.   The smoke generator according to claim 1, wherein the ultrasonic vibrator and the air supply / exhaust cylinder are arranged so that a center of a vibration surface of the ultrasonic vibrator and a central axis of the air supply / exhaust cylinder are shifted from each other. Tester.

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