JPH02192542A - Electrical air heater - Google Patents

Abstract

PURPOSE:To enable an automatic and continuous heating at a high temperature to be performed only when a person enters a toilet room by a method wherein when an infra-red ray sensor senses a human body temperature, a fan heater is operated irrespective of an operation of a thermostat. CONSTITUTION:Am variable thermostat 6 for use in adjusting temperature is mounted at a side of a power supply switch 5 of a case 1. In case that a tap water pipe under a cold weather is prevented from being freezed, a knob 7 is set at a low position (about 5 to 10 deg.C) to keep a temperature of a toilet room under an intermittent operation. At this time, even if the operation is stopped through a thermostat 6, an infra-red ray sensor 8 may detect an infra- red ray generated from a body of a human 11 in simultaneous with an entering of the person 11 into the toilet room. A heater unit 2 and a fan motor 3 are operated prior to an operation of a thermostat so as to discharge hot air continuously.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hot air heater mainly used for heating a toilet.

BACKGROUND OF THE INVENTION In recent years, there has been an increasing demand for heating each room, and this trend is also noticeable in toilets, and various electric hot air fans have been developed.

Conventionally, this type of electric hot air fan is generally small and has a single function, and is configured to emit hot air of approximately 100 lbs. when the power is turned on or off. Additionally, in cold regions, electric hot-air fans have been developed that have an automatic reset bimetallic thermostat built into the unit to keep the temperature inside the toilet almost constant in order to prevent water pipes from freezing.

Problems to be Solved by the Invention However, with the above-mentioned conventional configuration, single-function products have to be turned on and off every time they go in and out of the toilet, and if they forget to turn off the switch, they continue to operate unnecessarily for a long time. It had Since the initial temperature when entering the toilet is much lower than that of a heated room, there is a problem in that it takes time for the toilet to warm up.

In addition, electric hot air fans with a built-in automatic reset thermostat can be set at a temperature of 5℃ or more to prevent water pipes from freezing.
When operating intermittently at around 10 degrees Celsius, the temperature is too low for people to take heat, so it is inconvenient to have to reset the thermostat setting to a higher temperature and use it for heating. If the temperature is set to a medium-high temperature of 16° C. to 26° C., heating will be performed at an unnecessarily high temperature, resulting in a waste of energy.

Additionally, there are hot air blowers that are equipped with ultrasonic sensors and operate by detecting the movement of the human body, but these have the problem of being difficult to use, as they immediately stop operating if the person does not move. was.

The present invention solves these problems and is convenient because it normally heats pipes to prevent them from freezing, but can automatically and continuously heat the toilet at a high temperature only when someone enters the toilet. The purpose of this project is to provide an electric hot air fan.

Means for Solving the Problem In order to solve this problem, the present invention includes a fan and a heater built into the case, an automatic return type thermostat for controlling the operation of the fan and heater, and a thermostat mounted on the front of the case. A non-contact type infrared sensor is provided, and when the infrared sensor detects a person's body temperature, the fan heater is operated regardless of the operation of the thermostat.

Function According to the above configuration, a hot air fan is normally operated intermittently at a relatively low set temperature by the function of a thermostat to warm pipes, etc., but when a person enters the toilet, an infrared sensor installed on the front of the case activates the hot air fan. It senses body temperature and continuously blows warm air to warm the body. The next time a person exits the toilet, the infrared sensor will not work and the hot air fan will return to intermittent operation based on the temperature set by the thermostat.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2.

As shown in the figure, a case 1 made of synthetic resin or the like has a built-in heater unit in its upper part and a fan motor 3 in its lower part. In addition, a hot air outlet 4 molded from thermosetting resin is provided in front of the heater unit 2, and the case 1
An air suction port 9 is opened at the lower part of the rear surface. Furthermore, on the top of case 1, there is a power switch 6 for controlling the power supply.
A variable thermostat 6 is installed to adjust the room temperature. 7 is a knob for varying the thermostat 6.

Furthermore, a non-contact infrared sensor 8 is installed at the lower front of the case 1, and detects infrared rays emitted from a person 11 in front of the case 1 to operate the heater unit 2 and fan motor 3. be. The infrared sensor 8 and the heater unit 2 are blocked by a shielding plate 10.

The operation of this embodiment configured as above will be described below.

First, when the power switch 5 of the electric warm air fan installed in the toilet is turned on, the heater unit 2 and fan motor 3 are turned on.
is energized, and the air sucked in from the suction port 9 is heated while passing through the heater unit 2 and becomes warm air.Case 1
The hot air is discharged from a hot air outlet 4 provided at the front.

Next to the power switch 6 of the case 1, a variable thermostat 6 for temperature adjustment is installed.If you want to prevent water pipes from freezing in cold weather, set the knob 7 to a low position (approximately 5 to 10 degrees Celsius). ) to keep the inside of the toilet warm through intermittent operation.

At this time, even if the operation is stopped by the thermostat 6, the infrared sensor 8 detects the infrared rays emitted from the body of the person 11 as soon as the person 11 enters the toilet, and the heater unit 2 and the fan are activated in priority to the operation of the thermostat. The motor 3 is operated to continuously discharge hot air.

In addition, since it detects the heat of the human body with an infrared sensor,
Unlike ultrasonic sensors, there is no inconvenience that the equipment stops operating if a person does not move.

In this embodiment, an electric hot-air fan with a fan is used, but an electric heater without a fan may be used.

Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, a non-contact infrared sensor detects a person entering the restroom, and the control is performed continuously in priority to the thermostat control. The heating operation is possible, and when no one is in the toilet, the thermostat with a lower temperature setting operates intermittently to prevent pipes in the toilet from freezing, reducing energy loss due to forgetting to turn off the switch. The objective is to realize an excellent electric hot air fan that is easy to use, eliminates heating, speeds up the start-up during heating, improves comfort, and eliminates complicated switch operations and interruptions in heating.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an electric hot air fan according to an embodiment of the present invention;
The figure is a plan view showing how the electric warm air fan is installed in the toilet. 1: Case, 2: Heater, 3:.
...Fan, 6...Thermostat, 8.
...Name of infrared M sensor agent Patent attorney Awa
Takashi Noshige and 1 other person 1---Case 2・-Heater

Claims (1)

[Claims] A fan and heater are built into the case, and an automatic reset thermostat is attached to control the operation of the fan and heater.A non-contact infrared sensor is installed on the front of the case, and the infrared sensor detects the body temperature of the person. When this happens, the electric hot air fan and heater are operated regardless of the operation of the thermostat.