JPH0370625A - Moistening device for automobile - Google Patents

Abstract

PURPOSE:To prevent freezing of water in a water storage tank, to monitor the abnormal generation of heat by a radiation plate, and to enable the safe use of a moistening device at a cold area during a winter season by a method wherein a transistor generating heat along with control of a blower motor is mounted to the radiation plate mounted fronting on the water storage tank. CONSTITUTION:Water in a water storage tank 12 is guided through a water guide pipe 13 to an atomizing chamber 15, and is atomized through operation of an ultrasonic generating device 3 controlled by a controller 4. Generated steam is fed to the outside of a moistening device through a duct 1 by means of wind generated by means of a blower motor 6. In this case, when it is detected by a water level detecting sensor 2 that a water level in the atomizing chamber 15 is abnormally lowered, atomization is stopped. A Tr10 of transistors Tr7 and Tr10 with which a part of the control circuit of the blower motor 6 is formed is mounted to a radiation plate 11 fronting on the water storage tank 12. Heat generated by the radiation plate is transmitted to water, and when the abnormal heat generating state of the radiation plate 11 is detected by a thermistor 9, the Tr 10 is switched to the Tr7 arranged in a ventilating flue 8 to suppress the generation of heat effected by the radiation plate 11.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device that prevents water contained in an automobile humidifier from freezing and prevents smoke generation, ignition, etc. due to abnormal heating.

[Conventional technology]

Conventional humidifiers, as in Utility Model Application No. 58-10363, have a structure in which a heater prevents freezing in the atomization chamber, and there are no particular restrictions on the heater when there is no water. In addition, the heater can be installed in a water conduit or in the atomization chamber, with a water conduit inside the shell.

No consideration was given to the fact that water in a water tank larger than the atomization chamber is difficult to thaw.

[Problem to be solved by the invention]

The above-mentioned conventional technology does not take into account the fact that the atomization chamber thaws earlier than the atomization water storage tank, so if you try to atomize immediately after the start of thawing, you will quickly run out of water. In addition, the heater, which is the heat source, does not have an overheat prevention function, and no consideration was given to the possibility of abnormal overheating when water becomes low.

The present invention simultaneously prevents a rapid lack of water due to atomization immediately after the start of ice melting by melting ice from the water tank side, which is the most difficult to melt and is the source of water.

The aim is to install a monitoring device such as a thermistor on the heat source to prevent abnormal overheating of the heat source, and also to provide an automotive humidifier that can be used in winter or in cold regions.

[Means to solve the problem]

To achieve the above objective, the heat source for ice melting is installed inside the water storage tank, and instead of using a specially installed heater, it uses the heat generated by the transistor that is generated when controlling the voltage of the blower motor that sends the mist out of the humidifier. It is configured to do this. Furthermore, the heat source is equipped with a monitoring device such as a thermistor to prevent abnormal overheating even when there is little water in the water tank. Additionally, lamp these states.

The humidifier is configured to monitor the operating status of the humidifier by notifying the user with I, ED, etc.

[Effect]

The heat source utilizes the heat generated when a blower motor control transistor, which is conventionally installed in humidifiers, operates. This can be achieved at low cost without the need to install a new heater. The structure of the heat source can be simplified by transmitting the heat generated by the transistor to a heat sink installed inside the water tank. Furthermore, by installing the heat source in the water storage tank instead of in the atomization chamber, when water freezes, only the atomization chamber is thawed and atomization is performed, making it possible to prevent a situation without water from occurring.

Furthermore, since the temperature of the heat sink itself, which is the heat source, is monitored using a thermistor, etc., even if there is no water in the water tank, smoke generation, ignition, etc. can be prevented, increasing safety. ing. Furthermore, the serviceability of the humidifier is improved by informing the user of the condition of the humidifier using a light emitting element.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. 1st
The figure is a block diagram of the entire humidifier. Water stored in 12 water tanks is drawn into 15 atomization chambers through 13 water conduit pipes. The water level in the atomization chamber 15 is always kept constant due to the atmospheric pressure, and is atomized by the ultrasonic generator 3 controlled by the humidifier controller 4.The reduced water is transferred to the water storage 12. It is automatically replenished from the tank. Further, the atomized water vapor is forcibly sent out of the humidifier through the duct 1 by the wind generated by the blower motor 6.

As the atomization progresses and the water tank 12 becomes empty, the water level in the atomization chamber 15 gradually decreases.

If the water level is below a certain level, the ultrasonic generator (3) may deteriorate, so the water level detection sensor (2) monitors the water level in the atomization chamber and stops atomization when the water level drops.

The voltage applied to the blower motor for sending atomized water vapor out of the humidifier is controlled by transistors 7 and 10. Normally and when the water temperature in the atomization chamber is low, a transistor of 0 is used, and its heat is transmitted to the heat sink 11.

Therefore, the water in the 12 water tanks is warmed by this. ■The temperature of the heat sink 1 is monitored by the thermistor 9, and in the event of abnormal heating, the controller ↓4 switches to the transistor 7, suppressing the heat generation of the heat sink 11, and at the same time, only the blower motor continues to rotate. It is structured as follows.

The system block diagram of the above system is shown in Figure 2.
Further, the control flow is shown in FIG.

Second. As shown in Fig. 3, in this embodiment, when water freezes in a cold region, the water temperature is detected by a thermistor 5 installed in the atomization chamber, and the thawing state is monitored. Ice can be melted from the 12 water tanks that are the water supply source and are the most difficult to melt. At this time, only the blower motor is left in operation, and a light emitting element notifies the user that the ice is being thawed, thereby improving usability.

When the ice melts and the water temperature in the atomizing chamber reaches a certain temperature or higher, the ice melting display is canceled, but the water in the 12 water tanks continues to be heated. This is to prevent refreezing. Furthermore, overheating of the heat sink 11 due to dry heating, etc. is detected by the temperature of the thermistor 9 attached to the heat sink, and by switching to the transistor 7 installed in the ventilation path 8, the heat source of the transistor 10 is detected. The power supply is cut off to prevent the heat sink from overheating, and the blower motor continues to rotate so that the atomization performance is not affected.

In addition, if the heat sink in the water tank is always underwater,
The determination circuit for switching between transistor No. 7 and two transistors can be omitted.

According to this embodiment, even in cold regions, the structure automatically thaws the built-in water and prevents abnormal heat generation, so it is possible to realize a highly safe automobile humidifier. .

〔Effect of the invention〕

According to the present invention, since it is configured as described above, the following effects can be achieved.

Since the heat generated by the conventional blower motor voltage control transistor is used as the heat source for defrosting, it is possible to provide an automotive humidifier that has a simple and inexpensive structure and can be used even in winter or in cold regions.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention, FIG. 2 is a system block diagram in FIG. 1, and FIG. 3 is a control flow diagram in this embodiment. Engineering...Duct, 2...Water level detection sensor, 3...
Ultrasonic generator, 4... humidifier controller, 5...
・Water temperature sensor for atomization chamber, 6... Prower motor, 7.
... Transistor, 8... Ventilation path, 10... Transistor, 1]-... Heat sink, 2... Water tank, 13...
・・Water pipe, 14...Ko High 2-Figure tail

Claims (1)

[Claims] 1. A water tank for storing water for atomization, a transistor for driving a blower motor with a heat sink built into the tank, a thermistor for detecting the temperature of the heat sink in the water tank, and a thermistor for driving an air-cooled blower motor. Atomization chamber that incorporates a transistor, a controller that has the function of switching between two transistors, signal processing from various sensors, a humidifier, a function that can vary the voltage between the terminals of the blower motor using a transistor, and a humidifier that generates mist using ultrasonic waves. , a thermistor that detects the water temperature in the atomization chamber, a water level sensor that detects the water level in the atomization chamber,
In an automobile humidifier that consists of a blower motor that sends mist to the outside of the humidifier, the heat generated by the transistor generated when the blower motor is controlled is transmitted to the heat sink inside the water tank, thereby discharging the inside of the water tank, the water pipes following it, and the mist. A humidifier for an automobile is characterized in that it is equipped with a function that prevents water in the heat sink from freezing and also monitors abnormal heat generation of the heat sink using a thermistor attached to the heat sink to ensure safety. 2. In the automotive humidifier described in claim 1, when the water is frozen, the blower motor is rotated and the transistor generates heat generated by its control to thaw the water, so that the water temperature after thawing is higher than a specific temperature. An automobile humidifier characterized by being provided with a function of driving an atomizing device after the temperature reaches 100. 3. In the automotive humidifier according to claim 1, if the temperature of the heat sink in the water tank is too high, switching to a separately placed transistor stops heating the heat sink, and
An automobile humidifier characterized by having a function of sustaining the rotation of a blower motor. 4. The automobile humidifier according to claim 1, wherein a heat source for melting ice is installed in a water storage tank for storing water for atomization. 5. An automobile humidifier according to claim 1, further comprising a function of displaying whether the humidifier is deicing, operating normally, detecting an abnormality, or the like.