JPH04371727A - Electric space heater - Google Patents

Abstract

PURPOSE:To provide an electric space heater capable of detecting accurately an indoor temperature with a sensor to regulate the indoor temperature stably when a heater for hot air heating and a heater for radiant heating are simultaneously operated or even when either one of the heaters is operated. CONSTITUTION:The title space heater is provided with a first external air inlet port at an upper part on the rear face of a case 7, a second external air inlet port at a lower part on the rear face thereof, a hot air outlet port at a lower part on the front face of the case 7 and an opening at an upper part on the front face thereof. Further, a blower 14, a heater 16 for hot air heating, a heater 21 for radiant heating, an outlet air path 12 and a suction chamber 19 housing a room temperature sensor unit 20 are arranged in the case 7 to construct the space heater. Since the outlet air path 12 which acts as a heat insulating layer of air is interposed between the heater 21 for radiant heating and the suction chamber 19, the sensor unit 20 is not affected directly by heat from the heater 21 for radiant heating during radiant heating operation. Further, since the external air passes through the suction chamber 19 from the second external air inlet port 9, the external air circulates gently during hot air heating operation, whereby the sensor unit 20 can accurately detect an indoor temperature.

Description

[Detailed description of the invention]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric heating device having a heater for hot air heating and a heater for radiant heating.

[Prior Art] Conventionally, this type of electric heating device was developed in Japanese Patent Application Laid-open No. 5
A configuration as shown in Japanese Patent No. 8-142133 was common. The configuration will be described below with reference to FIG. In FIG. 6, 1 is the main body of the electric heating device,
A blower 2 and a hot air heater 3 are arranged inside the main body 1,
It has an outside air inlet 4 and a hot air outlet 5. The front surface of the main body 1 is equipped with a radiant heater 6. When the hot air heating function of the electric heating device is operated in the above configuration, the air flowing into the main body 1 from the outside air intake port 4 is pressurized by the blower 2, heated by the hot air heating heater 3, and hot air is blown out. It is blown out from mouth 5. Moreover, when the radiant heating heater 6 is operated, heating for radiant heating is also performed.

[Problems to be Solved by the Invention] In such conventional electric heating devices, when installing a sensor unit (not shown) for automatic indoor temperature adjustment, it is difficult to stabilize the temperature when the hot air heating function is activated. If a sensor section is provided near the outside air intake port 4, the indoor temperature cannot be accurately detected due to the influence of the radiant heater 6 during radiant heating. In other words, in order to avoid being affected by the radiant heating heater 6 during radiant heating, it is necessary to make the capacity of the radiant heating heater 6 considerably smaller or to make the main body 1 considerably larger. It has not been possible to install the sensor section so as to accurately detect the indoor temperature during both hot air heating and radiant heating without reducing the capacity of the heater 6. The present invention solves the above problem, and without reducing the capacity of the radiant heating heater, the sensor can be used indoors even when the warm air heating heater and the radiant heating heater are energized at the same time, and when either one of them is energized. The purpose of the present invention is to provide an electric heating device that can accurately detect temperature and perform stable indoor temperature control.

[Means for Solving the Problems] In order to achieve the above object, the electric heating device of the present invention includes a case having an opening at the upper part of the front surface, a radiant heating heater in the opening of the case, There is a warm air outlet at the bottom of the front of the case,
The upper part of the rear surface of the case is provided with a first outside air inlet, and the lower part is provided with a second outside air inlet, and the first outside air inlet and the hot air outlet are communicated in the case. a suction passageway including a hot air heating heater and a blower for sending air to the warm air heating heater in the blowing air passage, and having the second outside air suction port in the case. The interior of the chamber is provided with a through hole communicating with the first outside air suction port, and a room temperature sensor is provided within the suction chamber.

[Function] According to the above-described structure, the sensor section of the present invention is located through the air outlet path relative to the heater for radiant heating, so this air outlet blocks heat from the heater for radiant heating during radiant heating. Therefore, the sensor part is not directly affected by the heater for radiant heating, and during hot air heating, the blowout air path is affected by the heat of the heater during hot air heating, but some of the outside air sucked in by the blower is The outside air circulates from the outside air inlet, through the suction chamber, through the through hole, and into the sensor section, making it possible to accurately detect the indoor temperature.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a cross-sectional view from the side showing the internal structure of an electric heating device according to an embodiment of the present invention. In the figure, 7 is a case, and a first outside air inlet 8 is provided at the upper part of the rear surface of the case, and a second outside air inlet 9 is provided at the lower part of the rear surface of the case so as to protrude one step further than the rear surface of the case. An opening 10 is provided at the top, and a hot air outlet 11 is provided at the bottom of the front of the case. Inside the case 7 is an L that communicates the first outside air inlet 8 and the hot air outlet 11.
A mold blowing air passage 12 is provided, and the blowing air passage 12
A blower 14 is attached to the vertical portion 13 of the rotor so that the rotating shaft 15 is horizontal. A hot air heater 16 is provided downstream of the blower 14. A filter 17 is attached to the first outside air suction port, and a suction chamber 19 provided with a through hole 18 communicating with the first outside air suction port is provided at the second outside air suction port 9. A sensor section 20 is provided inside. A radiant heating heater 21 is provided in the opening 10, and an operation control device 22 is provided in the upper surface of the case 7. To explain the operation in the above configuration, during hot air heating, the air sucked from the first outside air suction port 8 as shown in FIG.
The suction port 23 passes through the filter 17 and passes through the case 8.
The air flows into the blower 14. The air pressurized by the blower 14 is heated by the hot air heating heater 16, and the air is heated by the hot air heating heater 16.
2 and is blown out from the hot air outlet 11. At this time, air is also sucked from the second outside air suction port 9, passes through the suction chamber 19, passes through the through hole 18, and then enters the case 8.
The sensor section 20 detects the room temperature as air flows through the interior to the blower 14. On the other hand, during radiant heating, as shown in FIG. 2, the radiant heating heater 21 generates heat, and the opening 10
Heat is radiated from the outside. As described above, according to the electric heating device of the embodiment of the present invention, the sensor unit 20 is located at the lower part of the case 7 via the air outlet duct 12 with respect to the heater 10 for radiant heating. The sensor unit 20 is located on the lee side of the convection of heat inside the case 7 caused by the heater 10, and the air outlet duct 12 acts as an air insulation layer against radiant heat. The room temperature can be detected without being affected by radiant heat or convection heat. In addition, during hot air heating, the temperature of the blowout air passage 12 rises due to the hot air heating heater 16, but as described above, the air flows through the suction chamber 19 having the sensor section 20, so that the room temperature is not affected by this. Can be detected. Furthermore, the sensor section 20
Since the room temperature is in contact with outside air without passing through the filter 17, the room temperature can be detected more accurately. In the configuration of the above-mentioned embodiment, the operation control device 22 operates the blower 14 only when the room temperature is detected during radiant heating, or operates the blower 14 at low speed all the time, so that the air flow to the sensor unit 20 can be controlled even during radiant heating. It is possible to wake up and stably detect room temperature. Furthermore, at this time, it is also possible to prevent an increase in the temperature inside the case 7 due to radiation from the radiant heating heater 10.

[Effects of the Invention] As is clear from the embodiments of the present invention, according to the present invention, the sensor portion is located through the blowout air path with respect to the heater for radiant heating. Since the air passage becomes an air insulating layer that blocks heat from the radiant heating heater during radiant heating, the sensor unit is not directly affected by the radiant heating heater during radiant heating and can accurately detect the room temperature. In addition, during hot air heating, the outside air passes through the sensor unit, so the room temperature can be accurately detected, allowing radiant heating and hot air heating to be adjusted to a comfortable temperature without increasing the size of the case or reducing the capacity of the radiant heating heater. A thin electric heating device can be provided.

[Brief explanation of drawings]

[Fig. 1] A sectional view of an electric heating device according to an embodiment of the present invention when viewed from the side during hot air heating.

[Figure 2] Cross-sectional view of the electric heating device when viewed from the side during radiant heating

[Figure 3] External perspective view of the electric heating device seen from the front

[Figure 4] External perspective view seen from the rear

[Figure 5] Electrical circuit diagram

[Figure 6] Vertical cross-sectional view from the side showing the internal configuration of a conventional electric heating device

[Explanation of symbols]

7 Case 8. First outside air intake port 9 Second outside air intake 10 Opening 11 Hot air outlet 12　Blowout air passage 14　Blower 16 Hot air heater 18 Through hole 19 Suction chamber 20 Sensor section 21 Radiant heating heater

Claims (1)

[Claims] Claims 1: A case having an opening at the upper part of the front surface; a radiant heating heater in the opening of the case; a hot air outlet in the lower part of the front surface of the case; and a heater in the upper part of the rear surface of the case. The case includes a first outside air intake port and a second outside air intake port at the bottom, and a blowout air path that communicates the first outside air intake port with the warm air outlet, and a blowout air path that communicates the first outside air intake port with the warm air outlet. The path is equipped with a heater for hot air heating and a blower for sending air to the heater for hot air heating, and the suction chamber having the second outside air suction port in the case is provided with the second outside air suction port. An electric heating device that is equipped with a through hole that communicates with one outside air suction port, and a room temperature sensor installed inside the suction chamber.