JPH0297828A - Personal heater - Google Patents

Abstract

PURPOSE:To enable comfortable heating at user's feet to be obtained regardless of a space temperature by providing a control circuit section for controlling a panel-like heater so that an acting temperature in the vicinity of user's feet under a desk is in agreement with a value set by a temperature setting means. CONSTITUTION:A panel-like heater 1 is set on the fore side at user's feet under a desk 2, and a manipulation box 8 is provided near at hand on the upper surface of the desk 2. A user closes a power source switch 7 and sets a desired temperature at his feet by manipulating a temperature setting means 5. A control circuit section 6 receives the signals of temperatures detected by an air temperature detector 3 and by a radiant temperature detector 4 to calculate an acting temperature, and compares the acting temperature with the temperature set by the temperature setting means 5. In the case where the calculated acting temperature in the vicinity of user's feet is lower than the preset temperature, the control circuit section 6 controls to supply a large amount of power to the heater 1. As a result, the acting temperature in the vicinity of user's feet approaches the preset temperature, thereupon the control circuit section 6 reduces a power supply angle by means of phase control and supplies a less amount of power to the heater 1 so that the acting temperature is in agreement with the preset temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a personal heater equipped with a panel-shaped heater for use in homes and workplaces.

BACKGROUND OF THE INVENTION In recent years, individualized air conditioning that suits each person has become more important at home and at work.

Conventionally, this type of personal heater has had a configuration as shown in FIG. In the figure, 1o is a panel-shaped heater installed on the wall in front of the feet of the desk 11, and the switch 12 installed on the top plate of the desk 11 switches the power to three levels: high, medium, and low. It was possible to switch to stages.

In the above configuration, the user operates the switch 12 to control the amount of heat generated by the heater 1o, depending on the degree of coldness under the feet.

Problems to be Solved by the Invention However, with the above configuration, the user had to manually control the amount of heat generated by the heater 1o each time the user used the heater 1o based on the sensation of heat and cold under his/her feet. Furthermore, when the air temperature at the feet of the desk 11 rises after the heater 1o is energized, the user has to operate the switch 12 again to reduce the amount of heat generated by the heater 1o, which is inconvenient to use. Ta.

The present invention solves these problems, and once the user has set the temperature that he/she feels is most appropriate,
The purpose of the present invention is to provide a personal heater that is easy to operate and provides comfortable heating of the feet regardless of the air temperature at the feet just by turning on the power switch.

Means for Solving the Problems In order to achieve the above object, the present invention includes a panel-shaped heater installed in front of the foot of a desk, and an air temperature detection device that detects the air temperature at the foot of the desk warmed by the heater. a radiant temperature detector that detects radiant heat from the heater; and a radiant temperature detector that receives detected temperature signals from the air temperature detector and the radiant temperature detector, and detects the temperature at the foot of the desk based on the air temperature and the radiant temperature. Calculate the nearby working temperature and compare it with the working temperature set by the temperature setting device installed at hand.
and a control circuit section that controls the panel-shaped heater so that the operating temperature near the foot of the desk matches the value set by the temperature setting device.

Effect With this configuration, when the user sets the temperature at which he or she feels most comfortable as the operating temperature on the temperature setting device, the control circuit calculates the operating temperature from the set operating temperature, the air temperature near the feet, and the radiant temperature. If the calculated working temperature is lower than the set working temperature, the power applied to the heater is increased to increase the amount of heat generated by the heater, and conversely, the calculated working temperature is set. If the operating temperature is also higher, the power applied to the heater is reduced to reduce the amount of heat generated by the heater, and the heater is controlled so that the operating temperature near the foot of the desk is the same as the set temperature.

EXAMPLE Hereinafter, an example of the present invention will be described based on FIG. FIG. 1 shows the configuration of a personal heater according to an embodiment of the present invention. A panel-shaped heater 1 is installed in front of the feet of a desk 2, and an operation panel is located near the top of the desk 2. 'F box 8 is provided. Inside this operation box 8, there is a control circuit section 6 that can steplessly change the power to be supplied through phase control using a semiconductor switch such as a triac, and a control circuit section 6 that can control the temperature near the foot of the desk 2, that is, the operating temperature. A temperature setter 5 that can be set in stages and a power switch 7 that turns on and off power to the control circuit section e and the heater 1 are housed. An air temperature detector 3 and a radiation temperature detector 4 for detecting the operating temperature near the foot of the desk 2 are installed near the foot of the desk 20, and output the detected operating temperature to the control circuit section 6 as a signal.

According to the above configuration, the user first turns on the power switch 7 and sets the desired temperature at his/her feet using the temperature setting device 5VC. The control circuit section e inputs the detected temperature signals of the air temperature sensor 3 and the radiation temperature sensor 4 or G, calculates the operating temperature, and compares it with the temperature set by the temperature setting device 5. When starting use in the morning in winter, the calculated operating temperature near the feet is often lower than the set temperature, and in such cases, the control circuit 6 maximizes the power applied to the heater 1. Control circuit section 6 is normally K, air temperature detector 3
The detected temperature signal from the radiation temperature detector 4 is inputted, the working temperature is calculated, and the calculated working temperature is compared with the temperature set by the temperature setting device 6. After the start of use, when the air at the feet of the desk 2 is warmed by the heater IK, the operating temperature near the feet approaches the set temperature, so the control circuit section 6 reduces the energization angle by phase control and energizes the heater 1. Reduce the amount of power used to make the operating temperature match the set temperature.

When leaving the desk 2 or not using it, turn off the power switch 7. To use it again, simply turn on the power switch 7, and the operating temperature at the foot of the desk 2 will be controlled to match the set temperature in the same manner as described above.

From the explanation of the embodiments above, it is clear that according to the present invention, no matter what the temperature of the air at the foot of the desk is, simply by setting the desired temperature, the control circuit unit can control the operation of the foot of the desk. Since the temperature is controlled to match the desired temperature, there is no need to constantly adjust the temperature even if the environmental temperature changes, and the effect is that it is easy to operate and provides a stable and comfortable environment under your feet.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a personal heater according to an embodiment of the present invention, and FIG. 2 is a perspective view of a conventional personal heater. 1... Heater 3... Air temperature detector, 4... Radiation temperature detector, 6... Temperature setting device, 6... Control circuit section.

Claims (1)

[Claims] a panel-shaped heater installed in front of the foot of the desk; an air temperature detector that detects the temperature of the air at the foot of the desk warmed by the heater; a radiant temperature detector that detects radiant heat from the heater; A temperature setting device installed at hand that receives detected temperature signals from the air temperature detector and the radiant temperature detector, calculates the operating temperature near the foot of the desk from the air temperature and the radiant temperature, and a control circuit unit that controls the panel-shaped heater so that the operating temperature near the foot of the desk matches the value set by the temperature setting device.