JPH0410510Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The invention consists of a blower and a heat exchanger, which are interlocked on each side with an electric motor in between, and the air that has passed through the heat exchanger is sent to the outlet. Overheating of an air conditioner in which the air conditioner main body is equipped with an auxiliary heating heater provided in the middle of the air outlet path, and a temperature-sensitive thermistor for overheating prevention is attached to the side of the air outlet than the auxiliary heater in the middle of the air outlet path. Regarding the mounting structure of a temperature-sensitive thermistor for prevention.

(Prior Art) As an air conditioner, the one shown in, for example, Japanese Unexamined Utility Model Publication No. 1016/1983 is known. FIG. 6 is a longitudinal cross-sectional view of the above-mentioned conventional ceiling-embedded air conditioner. In this figure, 1
2 is a blower, 2 is a heat exchanger, and 3 is a drain pan. These blower 1, heat exchanger 2, and drain pan 3 are provided in the air conditioner main body 4, and air is sucked by the blower 1 from the suction port 5, and the The suction air is passed through a heat exchanger 2, passed through a blowout path R, and is blown out from a blowout port 6. In the figure, reference numeral 7 denotes a decorative panel, and this decorative panel 7 is provided with a suction grill 8 corresponding to the suction port 5 and a blow-out portion 9 corresponding to the blow-off port 6.

In such an air conditioner, the air outlet 6
is long in the longitudinal direction, generally two blowers 1 are provided along the longitudinal direction of the air outlet 6,
One electric motor is installed between those blowers 1 and 1,
The electric motor is configured to drive both blowers.

(Problem to be solved by the invention) However, in the conventional example having such a configuration, when an auxiliary heater is provided on the blowing side of the heat exchanger 2, when the air volume of the blower 1 decreases, the blowing path In order to protect the casing member (for example, a synthetic resin casing) forming R, a temperature-sensitive thermistor for overheating prevention is provided at the center of the blowout path R, where the temperature of the blowout air is usually highest.

However, in this case, due to manufacturing errors in the shape of the blades of both blowers, the shape of the fan housing, etc., the direction and speed of the blown air change depending on the rotational position of the fan rotor, and as a result, the blown air from both blowers changes. The speech bubble path R where
At the central position, the influence of changes in wind direction and wind speed becomes significant, and the temperature of the blown air fluctuates over a large range (for example, 8 degrees). As a result, in order to ensure safety, the set temperature of the temperature-sensitive thermistor to prevent overheating, which stops the heater, has to be set low, and the heater continues to turn on and off even at relatively low temperatures.
This had the disadvantage that heating auxiliary performance deteriorated.

The present invention has been developed in view of these circumstances, and by stabilizing the temperature of the blown air at the location where the temperature-sensitive thermistor for overheating prevention is installed, the temperature of the blown air can be kept in a state with little fluctuation. The purpose is to detect this and avoid unnecessary turning on and off of the heater.

(Means for solving the problem) In order to achieve this purpose, the present invention
In the mounting structure of the temperature-sensitive thermistor for overheating prevention of an air conditioner described at the beginning, the temperature-sensitive thermistor 17 for overheating prevention is installed in the direction perpendicular to the direction in which the two blowers 1, 1 are arranged side by side. The temperature-sensitive thermistor 17 for overheat prevention is installed so as to correspond to the central location between the
A wind shield plate 20 that blocks the blown air is placed near the
It is characterized by the addition of.

(Function) According to this characteristic configuration, the blown air flowing through the blown air path R is blocked at a location sandwiched between the flow of blown air that has passed through the heat exchanger 2 from both blowers 1, 1, and the blown air is By avoiding direct action on the temperature-sensitive thermistor 17 for overheat prevention, the temperature of the temperature-sensitive thermistor 17 for overheat prevention is averaged, resulting in a stable region with little temperature fluctuation.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings. FIG. 1 is a partially cutaway front view of an air conditioner according to an embodiment of the present invention, FIG. 2 is a view taken along the - arrow in FIG.
It is a partially cutaway side view of the figure. In these figures, 1 and 1 are a blower, 2 is a heat exchanger, and 3 is a drain pan, and these blower 1, heat exchanger 2, and drain pan 3 are provided in the air conditioner main body 4,
Air is sucked from the suction port 5 by the blower 1,
The suction air is passed through a heat exchanger 2, passed through a blowout path R, and is blown out from a blowout port 6. In the figure, reference numeral 7 denotes a decorative panel, and this decorative panel 7 is provided with a suction grill 8 corresponding to the suction port 5 and a blow-out portion 9 corresponding to the blow-off port 6.

The blowers 1, 1 are interlocked and connected to an electric motor 10 disposed between them.

An auxiliary heater 11 is provided in the middle of the blowout path R.

A pair of brackets 12 are connected to the outer surfaces of each of the side plates 4a, 4a facing each other in the longitudinal direction of the air conditioner main body 4, and each of these brackets 12 has a suspension embedded in a concrete slab. Bolts 13 are inserted and connected and fixed via nuts 14, thereby suspending and supporting the air conditioner main body 4.

The decorative panel 7 includes an outer frame 15 and an outer frame 1
5, and an opening/closing panel 16 connected to the opening/closing panel 16 such that it can swing open/close and be fixed around a predetermined horizontal axis on the side far from the blowout part 9. Opening/closing panel 1
6 is formed with the suction grille 8, and the blowing portion 9 is formed between the free end edge of the open/close panel 16 in the closed state and the outer frame 15 facing thereto. There is.

A temperature-sensitive thermistor 17 for overheating prevention is provided in the middle of the blowout route R, closer to the blowout port 6 than the auxiliary heater 11, and detects the temperature of the blowout air, and when the detected temperature exceeds the set temperature. , the auxiliary heater 11 is turned off.

A louver 18 is provided near the air outlet 6 to horizontally adjust the blowing direction of the temperature-controlled air.
and a flap 19 for vertical adjustment.

As shown in FIG. 4 (see FIG. 1), the temperature-sensitive thermistor 17 for overheating prevention is connected to both the blowers 1,
The blowers 1 are installed so as to correspond to the central location between the two blowers 1 when viewed in a direction perpendicular to the direction in which the blowers 1 are arranged side by side. A wind shielding plate 20 for blocking blown air is attached to a position close to the temperature-sensitive thermistor 17 for overheating prevention and on the side of the auxiliary heater 11.

As shown in FIG. 5, the wind shielding plate 20 is formed in a chevron shape when viewed from the front, and is provided with a screw insertion hole 21, the top of which is connected to the auxiliary heater 1.
It is attached so as to be located on the 1 side, and is configured so as to provide as little resistance as possible to the temperature-controlled air that has passed through the heat exchanger 2.

(Effect of the invention) As described above, according to the invention, both blowers 1,
At a place caught between the flow of air blown out by 1,
Since the temperature of the heat exchanger 2 is detected while the flow of the blown air is blocked by the wind shield plate 20, temperature fluctuations at the location where the overheating prevention temperature-sensitive thermistor 17 is disposed are suppressed and the temperature is stabilized.

Therefore, it is not necessary to consider safety within a large range in the temperature setting for stopping the auxiliary heating heater 11, and it is possible to avoid repeatedly turning the auxiliary heater 11 ON and OFF at relatively low temperatures, thereby improving the auxiliary heating performance. Summer.

[Brief explanation of the drawing]

Fig. 1 is a front view of an air conditioner according to an embodiment of the present invention, Fig. 2 is a partially cutaway view taken along the - line in Fig. 1, and Fig. 3 is a partially cutaway side view of Fig. 1. Figure, 4th
The figure is a front view of the main parts showing the mounting structure of the auxiliary heater, FIG. 5 is a perspective view of a wind shield, and FIG. 6 is a longitudinal sectional view of a conventional air conditioner. 1... Blower, 2... Heat exchanger, 4... Air conditioner body, 6... Air outlet, 10... Electric motor,
DESCRIPTION OF SYMBOLS 11... Auxiliary heater, 17... Temperature-sensitive thermistor for overheating prevention, 20... Wind shielding plate, R... Blowout path.

Claims (1)

[Claims for Utility Model Registration] Air blowers 1, 1 interlockingly connected to both sides of the electric motor 10, a heat exchanger 2, and an air outlet 6 for discharging the air that has passed through the heat exchanger 2.
The air conditioner main body 4 is equipped with an auxiliary heater 11 provided in the middle of the air outlet path R, and a temperature-sensitive thermistor 17 for overheating prevention is provided on the side of the air outlet 6 from the auxiliary heater 11 in the middle of the air outlet path R. In the mounting structure of the temperature-sensitive thermistor for overheating prevention of the attached air conditioner, the temperature-sensitive thermistor 17 for overheating prevention is installed between the two blowers 1 and 1 when viewed in a direction perpendicular to the direction in which the blowers 1 and 1 are installed side by side. A temperature sensing device for preventing overheating of an air conditioner is installed to correspond to the central location of the air conditioner, and is provided with a wind shielding plate 20 for blocking the blown air at a position close to the temperature sensing thermistor 17 for preventing overheating. Thermistor mounting structure.