JP2006247430A - Gas type dryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To rotate a motor to continue combustion when the battery voltage is a fixed value or more in a gas type dryer in which the motor is rotated by the battery power supply to actuate a gas passage opening and closing means between a gas cylinder and a burner. <P>SOLUTION: This gas type dryer includes: a motor of a fan; a burner for burning gas to convert gas to hot air; an igniter; a power supply battery for driving the motor; a power supply voltage detecting means 51 for the battery; a gas passage opening and closing means for opening and closing the gas passage between the gas cylinder and the burner; an operating switch; and an ignition timer, wherein the rotation of the motor is stopped and the gas passage is closed by the gas passage opening and closing means when non-ignition is detected by a temperature detecting means during counting of the ignition timer for a fixed time. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a gas dryer that discharges hot air using a gas cylinder.

General hair dryers are assumed to be used in homes, hotels, hair salons, and beauty salons where commercial AC power is supplied, and cannot be used at all without AC power. (See Patent Document 1 below)
For this reason, portable dryers have been proposed. The biggest problem with portable dryers is that only hot air with low air temperature and low air volume can be taken out. There is a correlation between the reason why the air temperature cannot be increased and the reason why the air volume cannot be increased.

  For example, even if the calorific value (gas burner combustion amount) is increased and the air temperature is increased, if the air flow is small, it is not suitable for drying hair, and conversely the battery voltage (increasing the number of batteries) is increased to increase the motor speed. Even if the air volume is increased and the air temperature is increased, it is not suitable for drying as the air temperature is low.

  That is, in the case of carrying, it is impossible to increase the weight and increase the size of the dryer body. As a result, the number of batteries cannot be increased, and as a result, the number of rotations of the fan cannot be increased and the air volume is reduced.

  If a battery having a high battery voltage is used to increase the rotational speed of the fan, the battery capacity is reduced and the usage time is shortened. Furthermore, when the usage time is increased, the battery capacity may be increased, but the weight and size of the battery increase, which is not suitable for carrying.

  Similarly, to increase the heat generation amount (combustion amount) and increase the air temperature, it is possible to increase the gas consumption in the burner, but since the combustion time is shortened, it is necessary to increase the capacity of the gas tank. is there. Thus, increasing the internal capacity of the gas tank increases the size of the gas tank and is not suitable for carrying.

For the reasons described above, there is a so-called pistol type hair dryer in which a gas tank is stored using a hollow portion in a handle. (See Patent Document 2 below)
JP-A-5-137612 JP-A-6-133816

  However, in the case of the above-mentioned prior art, it is not necessary to provide a separate gas cylinder storage part by storing the gas tank in the handle, but since the battery is also stored in the same handle, the handle becomes thick and There are drawbacks that make it difficult. If the handle is made thinner, it will be easier to grip, but the gas cylinder size will be smaller, the combustion amount (gas consumption) will be lower, the air temperature will be lower, and the combustion time will be shortened. Shorter.

  In particular, detachably storing the gas cylinder in the handle means that the gas hose connecting the gas cylinder and the burner, the open / close valve provided in a part of the gas hose, the motor power switch, and the positional relationship with each functional part of the ignition device Must be fully considered.

  In detail, the overall vibration, impact, and mechanical movement of the gas cylinder that occur when the gas cylinder is attached / detached touches the opening / closing valve, causing the valve to open unexpectedly, or the gas hose to be crushed and damaged. This may cause a failure of the power switch or the ignition device.

  In particular, the problems of gas dryers are as follows. Since the battery power source is the electric energy of all electric parts such as motors, normal control of the electric parts cannot be performed if the battery voltage drops. Depending on the case, the motor speed is lower than the rated value and the air volume is low. In spite of the small amount, the burner is not suitable for drying because hot gas is discharged with a small air volume when the gas burns normally.

  In such a case, it can be used for the purpose of moisturizing the hair by slightly warming the hair without using it for drying the hair. However, the hair temperature becomes high and the moisturizing time of the moisturizing material is shortened.

  Furthermore, a valve that opens and closes the gas flow path through which the raw gas passes is provided between the gas cylinder and the burner, and this valve is operated by a battery power source. However, if the battery voltage drops, the valve cannot be opened. There is a drawback that ignition in the burner part is not possible.

  The present invention operates a gas flow path opening / closing means for rotating a motor using a battery power source and opening / closing a gas flow path between a gas cylinder and a burner. To continue combustion.

  Claim 1 of the present invention is a fan motor that blows inhaled air, a burner that converts the blown air into hot air, a gas cylinder that supplies gas to the burner, an igniter that is ignited by the burner, Temperature detecting means for detecting an ignition state by temperature change in the burner, gas flow path opening / closing means provided in a gas flow path between the gas cylinder and the burner, a battery, and an operation switch involved in battery power supply to the motor And an ignition timer that counts a predetermined time by the operation of the operation switch, and stops rotation of the motor when temperature detection means detects non-ignition during counting of the ignition timer for a certain time, and gas flow The gas flow path is closed by the path opening / closing means.

  According to a second aspect of the present invention, the operation switch supplies power of the battery to a temperature detecting means, an ignition timer, and a motor.

  According to the first aspect of the present invention, there is provided an operation switch involved in the supply of battery power to the motor, and an ignition timer that counts a predetermined time by the operation of the operation switch. If non-ignition is detected during a certain period of time, the motor stops rotating and the gas flow path is closed. If it is not ignited, the gas flow path is automatically closed and the raw gas is closed. Prevent the outflow of

  According to the invention of claim 2, since the battery power is supplied to the temperature detection means, the ignition timer, and the motor by the operation of the operation switch, the operation of the operation switch becomes the origin of all battery power supply, and the operation switch is activated. When not in use, all-off prevents battery energy consumption.

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a flow chart of a gas dryer according to the present invention, FIG. 2 is an explanatory side view of the inside of the dryer body, FIG. 3 is a system diagram, FIG. 4 is a block diagram, and FIG. .

  (1) is a pistol-type dryer main body, (2) is a cylindrical or elliptical cylindrical casing having a longitudinal cross-sectional shape having a discharge portion (3) on the front side and an intake portion (4) on the rear side , (5) is a burner disposed at a position close to the air discharge section (3) side in the cylindrical casing, (6) is an igniter (spark plug) for igniting the raw gas fixed near the burner, (7) is an ejector that takes in air necessary for combustion in the burner, and (8) is a motor disposed near the intake portion (4) side in the cylindrical casing, and rotationally drives the fan (9). .

  (10) is a bulging portion integrally formed with the casing at the lower part of the cylindrical casing (2), and a void (11) is formed in the hollow casing (2). There is no control board attached. This control board looks at the combustion state of the burner (5), controls the rotation of the motor (8) by detecting the opening and closing of the gas flow path and the battery voltage, etc. and the burner ( It is equipped with a microcomputer that incorporates safety software that closes the gas flow path when an ignition error occurs in 5). (12) is an LED indicator which is disposed in the space (11) and monitors the rotating state of the motor (8) and the ignition state of the burner (5) from the outside of the bulging portion.

  (13) is a space storage portion formed in the lower part of the cylindrical casing (2). In this embodiment, four AA batteries (14) are stored in an arc shape and connected in series. .

  (15) is a temperature sensor comprising a thermistor provided in the vicinity of the burner (5). When there is combustion in the burner and the temperature in the vicinity of the burner rises, its own resistance value changes, and the resistance value of the control board changes. Enter the electrical value. (16) is a cover of the space accommodating part (13), and (17) is a discharge adapter that is detachably attached to the tip of the air blowing part (3).

  (18) is a hollow cylindrical handle having a cylindrical or elliptical cross section, which is connected to the bulging portion (10) so that it can be bent (rotated) by a shaft (19), as shown in FIGS. A partition plate (20) divides the interior in the vertical direction to form an upper space portion (21) and a lower space portion (22), and each space portion is linearly arranged in the handle.

  The upper space (21) is located close to the cylindrical casing (2) side, and applies a high voltage to the gas flow path opening / closing means (23) to the burner (5) and the igniter (6) and a motor ( The electric circuit opening / closing means (24) for cutting off and power to 8) and the ignition device (25) are housed and fixed.

  The lower space (22) has an opening (26) on the side opposite to the partition plate. The partition plate (20) is fitted and securely fixed in the handle (18), and is attached to the upper space portion (21) side extending portion (27) and the lower space portion (22) side engaging portion. (28) is integrally formed, a gas hose (29) is connected to the extending portion (27), and an engaging portion (28) is a connecting portion (32) of the gas supply portion (31) of the gas cylinder (30). ).

  Next, devices and functional parts disposed in the upper space (21) will be described. (33) is an on-off valve which is one of gas passage opening / closing means provided in a part of the gas hose (29) connecting the extending portion (27) and the burner (5). Has a shaft (34) that opens the gas flow path when it is lifted, and when the lifting of this shaft is released, the shaft returns to the internal structure and closes the gas flow path.

  (35) is a responder which is one of the gas flow path opening / closing means arranged close to the opening / closing valve (33), and has a spindle (36) which is slidable on one side and always protrudes. The spindle is kept immersed while the power source of the battery (14) is applied, the shaft (34) is pulled up via a crank described later, and the on-off valve (33) is opened. (37) is a crank which is one of the gas flow path opening / closing means pivotally supported near the opening / closing valve (33) and the responder (35), and one end is locked to the shaft (34) of the opening / closing valve (33). The other end is locked to the spindle (36), and the open / close valve (33) closes the gas flow path and the spindle (36) protrudes at the position of the solid line in FIG.

  Therefore, when the crank (37) rotates in the direction of the arrow shown in FIG. 5, one end moves the shaft (34) to open the gas flow path, and the other end moves with the immersion of the spindle (36). In the operation in the embodiment, when the spindle (36) is pressed (immersed) by an external force, the crank (37) rotates to move the shaft (34) to open the gas flow path.

  (38) is an operation switch (microswitch) as an electric circuit opening / closing means for opening / closing an electric circuit between the battery (14)... And the motor (8) and a control means (39) of the microcomputer body shown in FIG. Then, the operation lever (40) is turned on and off by rotation. (41) is a "<"-shaped arm lever which is one of gas flow path opening / closing means having one end pivotally supported and the other end being free. An operating pin (42) is integrally formed in the middle portion. The other end always faces the tip of the spindle (36) of the responder (35). (43) is an ignition mechanism connected to the substrate of the control means (39) and the igniter (6). By pressing the pressing element (44) extending to one side, a high voltage is generated by the piezoelectric effect, and the igniter Discharge from (6) to ignite the raw gas.

  (45) is an operation knob which is slidably attached to the front wall of the handle (18), and its detailed structure will be described with reference to FIG. The operation knob (45) is configured such that the operation switch (38) is turned ON / OFF, the spindle (36) of the responding body (35) is immersed via the arm lever (41), and at the same time the shaft (37) is connected via the crank (37). (34) is moved to open and close the gas flow path, and the pusher (44) of the ignition mechanism (43) is operated to generate a high voltage, and an operation protrusion (46) integrally formed on the front side thereof is provided. By moving to a plurality of stages, the operation switch (38) is turned on to rotate the motor, open the gas flow path, generate a high voltage from the ignition device, ignite the raw gas, and burn from the burner.

  As shown in FIG. 5, the operation knob (45) is located in front of the upper space (21) of the front wall of the handle (18) and presses the operation lever (40) of the operation switch (38). Thus, the engaging piece (47) for turning on the operation switch and the striking piece (48) for pressing the pressing element (44) are integrally formed.

  The operation knob (45) is configured to slide to the upper side of the handle (18) when the gas is ignited, a position where all the functions are stopped, a first position for executing an initial operation means described later, Similarly, a second position for executing a normal operation means, which will be described later, is provided, and the slide operation from the stop position to the first position and from the first position to the second position is continuously performed.

  The second position is the end position of the slide operation of the operation knob (45). The final end of the second position is that the striking piece (48) presses the pressing element (44) to activate the ignition mechanism (43). Until the spark is fired from the igniter (6). After the end of the second position, the restoring force of the presser (44) is also helped to return to the stop position.

  In FIG. 5, the stop position of the operation knob (45) is indicated by a solid line, the first position is indicated by a broken line, and the second position is not shown in detail. 48) means a position where the pressing element (44) is pressed and a broken line position when returning from this position.

  (49) is a limiter for detecting abnormal overheating, which is attached in close contact with the burner (5), and is constituted by a thermistor in the embodiment.

  Next, the block diagram of FIG. 4 will be described. The control means (39) is supplied with the power supply voltage (about 6V) of the batteries (14)... The temperature detection means (50) mainly composed of the temperature sensor (15) on the input side, and the limiter (49). ) And the battery power supply voltage detecting means (52) are connected. On the output side of the control means (39), there is a gas flow path opening / closing means (23) of a transmission system for opening and closing the opening / closing valve (33) with the responder (35) as a main body, an LED indicator (12), a motor (8) is connected.

  In the present embodiment, since the ignition to the gas is described as sparking from the igniter (6) using the piezoelectric phenomenon of the ignition device (25), a battery power source is not required for ignition, but the control means ( 39) or a high voltage generating circuit as an external component may be provided, and battery power may be supplied to the circuit so as to be sparked from the igniter.

  When a high voltage is taken out from the high voltage generation circuit using a battery power source in this way, a switch that is turned on by pressing the pressing element (44) is provided, and the switch is turned on to generate a high voltage. That's fine.

  Next, the operation will be described based on the flowchart shown in FIG. When the operation knob (45) is at the stop position, the operation lever (40) is not pressed by the engaging piece (47), and the operation switch (38) is OFF, and all the electrical parts are in the stop state. Yes. That is, the rotation of the motor (8) is stopped, the on-off valve (33) closes the gas flow path, and the ignition device (25) is inactive (S1).

  When the operation knob (45) is actuated to move to the first position indicated by the broken line in FIG. 5 at the start of use, the initial operation means (A) is actuated (S2). This means is that when the operating knob engaging piece (47) pushes the operating lever (40) to turn on the operating switch (38) (S3), the battery power is supplied to the microcomputer of the control means (39) and the motor When (8) rotates and a part of the operation knob (45) forcibly pushes the spindle (36), one end of the crank (37) moves the shaft (34), opens the on-off valve (33) and opens the gas. The flow path is opened (S4).

  Further, in the initial operation means (A) by the first position of the operation knob (45), the battery power supply voltage detection means (52) is activated by supplying power to the microcomputer, and whether or not the detected voltage is a certain value or more. (S5), and if it is equal to or greater than a certain value, the resistance value of the temperature sensor (15) is detected from the microcomputer (S6).

  In the detection of the resistance value of the temperature sensor (15), if the resistance value detected in the stage before the start of the ignition operation is zero, it is determined as short, and if it is infinite, it is determined as open.

  When the battery voltage detected at the stage of the initial operation means (A) is above a certain value and the resistance value of the temperature sensor (15) is in a normal range that is neither short nor open, the operation knob (45) is continuously moved. The control shifts to the normal operation means (B) where the knob is in the second position (S7).

  In the normal operation means, the ignition timer (TA) is turned on by turning on the operation switch (38) when the initial operation means (A) is executed while the motor (8) is rotated and the gas flow path is opened (S8). Counting for a certain time (T1 = 2 to 3 seconds) is started (S9), and then the impact piece (48) presses the pressing element (44) of the ignition device (43) to operate the ignition device (43). (S10).

  When the count value of the ignition timer (TA) is counted for a certain time (T1) (S11), the resistance value of the temperature sensor (15) of the temperature detecting means (50) is detected, and the temperature of the burner (5) is constant. It is determined whether or not the temperature has increased (S12). If there is a certain temperature increase, it is determined that the ignition by the burner has succeeded and the temperature has increased.

  During the execution of the normal operation means (B), the operation knob (45) mechanically returns to the first position indicated by the broken line in FIG. 5, but the combustion process is at the second position, and the rotation of the motor (8). As a result, the air sucked by the fan (9) is discharged by the heat of the burner (5) and is discharged into the hair (hot air is applied to the hair to absorb the moisturizer, and the damaged hair is heated with high heat. The hair is made natural without being applied) or used for drying (S13).

  Further, during the execution of the normal operation means (B), whether or not the battery voltage is equal to or higher than a certain value by the power supply voltage detection means (52) as in the determination in step (S5) continuously during the combustion of gas. (S14), and at the same time, it is determined by the temperature detection means (50) whether the resistance value of the temperature sensor (15) is within a temperature measurement range indicating that the combustion state is normal, not short or open ( S15).

  The continuation of the open state of the gas flow path during the execution of the normal operation means (B) is that the detection voltage by the power supply voltage detection means (52) is a certain value or more, and the temperature sensor (15) by the temperature detection means (50). If the resistance value of the limiter (49) detected by the overtemperature prevention means (51) is within the normal range, although not shown in detail in FIG. 1, the output of the control means (39) The application of battery power to the responder (35) is continued, and the shaft (34) of the on-off valve (33) is pulled up to continue the open state of the gas flow path.

  When the operation knob (45) is returned from the broken line position in FIG. 5 to the solid line position in order to stop the use, the engagement piece (47) which has been pushing the operation lever (40) and turning the operation switch (38) on until now. The operation switch (38) is turned off from the operation lever (40) (S16).

  The time of step (S5) of the above-mentioned initial operation means (A), the time of step (S14) of normal operation means (B), the time of step (S6) of initial operation means, and the step of normal operation means ( In the case of not satisfying the conditions at the time of S12) and the time of step (S15), and in the case of the step of stopping all the operations (S16), stop means (stopping the gas flow path by stopping the rotation of the motor (8)) Go to C).

  In the stop means, first, the LED (12) blinks to notify that it has shifted to the stop means (S17), and the battery power supply to the responder (35) is cut off, and the shaft (34) of the on-off valve (33). However, the fan timer (TB) starts counting for a predetermined time (T2 = 5 seconds) when the operation switch (38) is turned off (S19). ).

  In the stop means, the motor (8) rotates until the fan timer (TB) counts up (S20), and even if the combustion is stopped and the temperature of the burner (5) is increased due to residual heat, the fan (9) Is discharged from the air discharge section (3) and the temperature in the cylindrical casing (2) is rapidly reduced. When the fan timer (TB) finishes counting the predetermined time (T2) (S21), the rotation of the motor (8) is stopped and all operations are ended (S22).

It is a flowchart of the gas type dryer of this invention. It is an internal side explanatory drawing of a dryer main body similarly. It is also a system diagram. It is also a block diagram. It is the elements on larger scale in a handle similarly.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dryer main body 5 Burner 6 Igniter 8 Motor 9 Fan 14 Battery 15 Temperature sensor 18 Handle 23 Gas flow path opening / closing means 24 Electric path opening / closing means 25 Ignition device 30 Gas cylinder 33 Open / close valve 35 Actuator 38 Actuation switch 39 Control means 41 Arm lever 43 Ignition mechanism 45 Operation knob 50 Temperature detection means 51 Power supply voltage detection means

Claims (2)

A motor of a fan that blows inhaled air, a burner that converts the blown air into hot air, a gas cylinder that supplies gas to the burner, an igniter that ignites with the burner, and an ignition state due to a temperature change in the burner A temperature detecting means for detecting the gas, a gas flow path opening / closing means provided in a gas flow path between the gas cylinder and the burner, a battery, an operation switch involved in battery power supply to the motor, and an operation of the operation switch An ignition timer that counts for a predetermined time, stops rotation of the motor when temperature detection means detects non-ignition during counting for a fixed time of the ignition timer, and opens the gas flow path by the gas flow path opening / closing means. A gas dryer that is closed. The gas dryer according to claim 1, wherein the operation switch supplies power of the battery to a temperature detection unit, an ignition timer, and a motor.