JPS6141841A - Humidity sensor fixing device for air conditioner - Google Patents

Abstract

PURPOSE:To accurately detect the humidity by directing the draft air to a humidity sensor by fixing the humidity sensor to the lower part of the power source panel situated on the back of a room unit of an air conditioner. CONSTITUTION:A humidity sensor 21 of a room unit 10 of a separate type air conditioner is fixed to a humidity sensor fixing device 25 disposed in the lower part of the back of a power source panel 18 in such a manner that the humidity sensor 21 is slidably held by a retainer 23 and is fixed by a hook 24. The humidity sensor 21 detects the humidity of room air by a humidity sensing part 22. As there is a hole 20 for preventing the fan motor overheating, the ventilation aroung the humidity sensing part 22 is good, and because it is separated from a heat exchanger 14 by the power source panel 18, it is not adversely affected. In this manner, the humidity can accurately be detected in response to a change in humidity of the room air.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for fixing a humidity sensor for detecting indoor humidity in an air conditioner that cools or heats the room.

Configuration of conventional example and its problems Conventionally, the humidity sensor of this type of air conditioner is fixed by a holding part 8 on the front surface, and in order to prevent the influence of heat from the indoor heat exchanger 9 etc., the humidity sensor 7 is fixed. The humidity sensing portion was insulated with a heat insulating material 5, and the humidity of the indoor air was detected through a sensing hole 4 provided in the indoor unit main body 1.

However, with this structure, since there is little wind flow near the humidity sensor 7, accurate humidity detection cannot be performed as shown by the broken line AK in FIG. Furthermore, such a structure has the problem that if the heat insulation effect is not perfect, the sensor will be affected by the heat of the heat exchanger and condensation will occur, making accurate detection impossible.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional problems, and aims to enable accurate detection of indoor humidity.

Structure of the Invention In order to achieve this object, the present invention provides a humidity sensor fixing device for fixing the humidity sensor to the lower part of the power supply panel located on the back side of the indoor unit main body, and further communicates with the fan motor heat prevention hole. It is something.

This configuration allows for good ventilation and less influence from the indoor heat exchanger, making it possible to accurately detect indoor air humidity.
Moreover, it does not require a heat insulating material like conventional ones.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

First, the schematic structure of an air conditioner will be explained with reference to FIGS. 1 and 2.

In the figure, 1o is an indoor unit main body of a separate air conditioner, and an inlet 11 and an outlet 12 are formed on the front surface. Reference numeral 13 denotes a ventilation passage formed inside the indoor unit main body 10, which connects the inlet 11 and the outlet 12.
A heat exchanger 14 and a blower (cross flow fan) 15, which constitute a well-known refrigeration cycle, are disposed therein. Reference numeral 16 denotes a water tray for the heat exchanger 14, which also serves as a stabilizer for the blower 15. A fan motor 17 is connected to the blower 15 via a fan motor shaft. Reference numeral 18 denotes a power supply panel, which also serves as a fixing device for the fan motor 17 and the electronic control unit 18a, as shown in the figure.

These are similar to existing air conditioners, and although the air fill and front grill are not shown,
This is a well-known feature.

Next, the structure of the humidity sensor fixing device will be explained with reference to FIGS. 3 and 4.

In FIG. 3, 19 is a cavity, and 20 is an indoor unit 1o.
The fan motor has a heating prevention hole formed on the back of the
As shown in the figure, the humidity sensor 21 is connected to the power supply board 18.
The humidity sensor is fixed to a humidity sensor fixing device 25 provided at the lower part of the back surface of the sensor. As shown in FIG. 4, the fixing structure is such that the humidity sensor 21 is slidably held by a holding part 23 and further fixed by claws 24. 22 is a humidity detection section of the humidity sensor 21.

In the above configuration, when the air conditioner is in a cooling operation, the humidity sensor 21 detects the humidity of indoor air using the humidity detection section 22. At this time, since the fan motor heating prevention hole 20 is provided, ventilation of the humidity detection section 22 is good, and since the humidity detection section 22 is cut off from the heat exchanger 14 via the power supply board 18, it is not affected by the heat exchanger 14.

Therefore, when detecting humidity, it is possible to accurately detect the humidity according to the humidity change CKja of the indoor air as shown by the dashed line B in FIG.

Effects of the Invention As described above, the present invention enables accurate humidity detection by providing ventilation to the humidity sensor, and further reduces material costs and assembly man-hours because no insulation material is used to isolate the humidity sensor from the heat exchanger. Moreover, since it is fixed with a simple structure, serviceability can be improved. Furthermore, since there is no need for a sensing hole on the front as in the conventional case, it has an excellent effect in terms of design.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of an air conditioner equipped with a humidity sensor fixing device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1, and FIG. 4 is an enlarged view of the main part of the humidity sensor fixing device in FIG. 3, and FIG. 5 is an air conditioner equipped with the humidity sensor fixing device shown in the conventional example. FIG. 6 is a sectional view taken along the line BB in FIG. 5, and FIG. 7 is a characteristic diagram showing the humidity detection state during cooling operation of the air conditioner. 10---One indoor unit main body, 14---One heat exchanger, 15---One blower, 17---Fan motor, 18a---Electronic control device, 18- ---
---1 Power supply panel, 20-------- Fan motor heating prevention hole, 21-- Humidity sensor, 23.-
1 ---- Holding part, 247 ---- Claw, 25 ----
------1 Humidity sensor fixing device. Name of agent: Patent attorney Uneo Nakao and 1 other person No. 4
Figure 5. Figure 7 Living room □

Claims (1)

[Claims] An air conditioner made of synthetic resin is equipped with a heat exchanger, a blower, a fan motor, an electronic control device, etc., and a fan motor heating prevention hole facing the fan motor is provided on the back side of the air conditioner main body, and further A humidity sensor fixing device is provided facing the fan motor heating prevention hole, and the humidity sensor fixing device is connected to a holding portion that holds the humidity sensor so as to be slidable in one direction, and prevents the humidity sensor from sliding in a direction in which the humidity sensor is removed. An air conditioner humidity sensor fixing device consisting of a claw.