JP2523967B2 - Electric warm air blower with air purifying function - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric warmer with an air purifying function, which is an electric warmer having an air cleaning function.

2. Description of the Related Art In recent years, interest in health has increased, and demands for not only temperature but also humidity and cleanliness of indoor air have increased. In particular, during winter heating when indoors are closed, pollution of indoor air due to cigarette smoke becomes a problem, and electric warmers with an air purifying function are used to warm the indoor air while simultaneously purifying the air.

A conventional electric air blower with an air purifying function has a structure as shown in FIG. That is, a lattice-shaped intake port 102 is provided on the front surface of the main body case 101, a dust removal filter 103 is attached behind it, and a blower 104 is provided behind it.

The blower 104 includes a motor 105, a fan 106, and a spiral casing 1
It consists of 07. A heating element 108 is provided on the discharge side of the blower 104, where the air is heated and discharged as warm air from the warm air outlet 109 into the room. A temperature sensor 110 is provided behind the dust removal filter 103.

In the above configuration, when there is an obstacle 111 near the hot air outlet 109, the warm air discharged from the warm air outlet 109 is the obstacle 111.
It is blocked by the air and is sucked in through the intake port 102, and hot air passes through the intake port 102, the dust removal filter 103, and the blower 104, which causes thermal deformation and deterioration of performance of each component, and also causes fire hazard. There is a nature.

When used in such a dangerous state, the temperature sensor 110 detects that the temperature of the intake air is equal to or higher than the set temperature, and the heating element 108 or the heating element 108 and the blower 10 are detected.
4 was stopped to avoid driving in a dangerous state.

However, in the above-described conventional configuration, the dust removal filter 10
Although the intake air that has passed through 3 is detected by the temperature sensor 110, the reaction of the temperature sensor 110 occurs because the temperature of the intake air decreases because it is absorbed by the dust removal filter 103 and mixes with the air from the room. However, there is a problem that the blower 104, the dust removal filter 103, and the like are heated before the temperature sensor 110 detects the temperature.

Further, if the temperature detected by the temperature sensor is lowered in order to speed up the reaction, the temperature sensor is likely to operate even under normal use conditions, causing a malfunction and stopping the product. The present invention solves the above-mentioned conventional problems, and provides an electric warmer with an air purifying function that can detect the temperature of the intake air in a short time and accurately when the hot air is taken in through an intake port. That is the purpose.

Means for Solving the Problems In order to achieve this object, an electric air blower with an air purifying function of the present invention is provided with a lattice-shaped intake port provided on the front surface of a main body case and dust removal provided behind this intake port. Filter for
A bypass passage provided in parallel with the dust removal filter behind the intake port, a blower disposed behind the dust removal filter and the bypass passage, and a heating element provided on the discharge side of the blower, It has a hot air outlet provided in the lower part of the front surface of the main body case and a temperature sensor provided in the bypass passage for detecting the intake air temperature, and the temperature sensor detects the intake air temperature higher than a preset temperature to detect the heating element. It is configured to stop the operation of.

Action With this configuration, when the hot air that has passed through the heating element is blocked by the facing obstacle and is taken in from the intake port, the temperature of the intake air is reduced by directly taking in the hot air from the bypass passage. Since the temperature sensor can directly send the temperature to the temperature sensor, the temperature sensor can immediately detect an accurate temperature.

Example An example of the present invention will be described below with reference to FIG.

As shown in the figure, a lattice-shaped intake port 2 is provided on the front surface of a box-shaped main body case 1, a dust removal filter 3 is attached behind it, and a bypass passage 4 is provided in parallel with the dust removal filter 3. A temperature sensor 11 is provided in the bypass passage 4. A blower 5 is arranged behind the dust removing filter 3 and the bypass passage 4, and the blower 5 is composed of a motor 6, a fan 7, and a spiral casing 8. A heating element 9 is provided on the discharge side of the blower 5, where the air is heated and warm air is provided as warm air at the lower front portion of the main body case 1.
It is spit out indoors from 10.

The operation of the electric hot air blower with the air purifying function of the present embodiment configured as described above will be described below.

First, when the operation is started, the fan 7 is rotated by the motor 6, and the room air is purified from the intake port 2 through the dust removal filter 3. In addition, a part is sucked through the bypass passage 4. The sucked air is swirled along the spiral casing 8 and guided from its discharge port to the heating element 9 where the air is heated and discharged as warm air from the warm air outlet 10 into the room. Here, if there is an obstacle 12 such as a wall near the warm air outlet 10, the warm air blows against the obstacle 12, changes its direction, and is again sucked into the main body case 1 through the intake port 2. At this time, part of the intake air passes through the bypass passage 4, but the temperature of the intake air is detected by the temperature sensor 11 provided in the bypass passage 4. When the suction temperature is equal to or higher than the set temperature, the heating element 9 or the heating element 9 and the blower 5 are stopped to prevent the dust removal filter 3 and the blower 5 from being heated.

As described above, according to this embodiment, the bypass passage is provided in parallel with the dust removal filter, and the temperature sensor for detecting the intake air temperature in the bypass passage is provided, so that the warm air passing through the heating element is directly sucked through the intake port. When the temperature rises, the temperature sensor can detect the abnormal rise in the intake air temperature accurately and in a short time, and the operation of the heating element and the blower can be stopped, and the intake port, dust filter, and blower can be stopped. It is possible to suppress the adverse effect of the warm air heat on the air.

In this embodiment, the temperature sensor is located in the bypass passage, but the temperature sensor may be located in front of or behind the bypass passage. Good.

As described above, according to the present invention, the bypass passage is provided in parallel with the dust removal filter, and the temperature sensor for detecting the intake air temperature is provided in the bypass passage, so that the warm air passing through the heating element is reflected on the obstacle. When the air is taken in through the intake port, the temperature of the intake air can be detected in a short time by the temperature sensor, and the operation of the heating element can be stopped. It is possible to realize an electric warm air blower with an excellent air purifying function, which is effective in preventing thermal deformation of the filter and the intake port.

[Brief description of drawings]

FIG. 1 is a sectional configuration diagram of an electric warmer with an air purifying function according to an embodiment of the present invention, and FIG. 2 is a sectional configuration diagram of a conventional electric warmer with an air purifying function. 1 ... Main body case, 2 ... Intake port, 3 ... Dust removal filter, 4 ... Bypass passage, 5 ... Blower, 9 ... Heating element, 10 ... Warm air outlet, 11 ... Temperature sensor.

Claims (1)

(57) [Claims] 1. A lattice-shaped intake port provided on the front surface of a main body case, a dust removal filter provided behind the intake port, and a dust removal filter provided in parallel with the dust removal filter behind the intake port. A bypass passage, a blower disposed behind the dust removal filter and the bypass passage, a heating element provided on the discharge side of the blower, a hot air outlet provided at a lower portion of the front surface of the main body case, and the bypass passage An electric warm air blower with an air purifying function, which has a temperature sensor for detecting an intake air temperature, the temperature sensor detects an intake air temperature equal to or higher than a set temperature and stops the operation of the heating element.