JPS6144106Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a humidity sensor mounting device for an air conditioner, and particularly to a device for mounting a humidity sensor to a heat exchanger.

(Prior Art) Generally, when a sensor is attached to a heat exchanger, the sensor is attached to the heat exchanger via a heat insulating material in order to reduce the thermal influence of the heat exchanger.

(Problems to be Solved by the Invention) In the case of a humidity sensor, it is required not only to reduce the thermal influence caused by the heat exchanger, but also to take measures against condensation water generated in the heat exchanger.

However, in the present invention, measures against heat and condensation water can be taken with an extremely simple structure.

(Means for Solving the Problems) The present invention is an air conditioner humidity sensor mounting device in which a sensor case having a vent is attached to a heat exchanger via a heat insulating material, and a humidity sensor is housed in the sensor case. In this case, the upper end of the heat insulating material is located below the upper end of the heat exchanger side wall of the sensor case. Then, a gap is provided between the upper end of the heat exchanger side wall of the sensor case and the heat exchanger using the heat insulating material.

(Function) When the heat exchanger acts as an evaporator, condensed water will be generated on its surface, but the condensed water will flow down the surface of the heat exchanger and will leak into the gap between it and the sensor case. Due to the presence of the humidity sensor, there is a very small possibility that the humidity sensor will drip onto the sensor case, and therefore, there is a very low possibility that the humidity sensor will become wet and malfunction.

(Example) An example of the present invention shown in the drawings will be described in detail below. Reference numeral 1 denotes an indoor unit of an air conditioner, which has an air intake port 2 and an air outlet 3. Reference numeral 4 denotes a heat exchanger constituted by refrigerant pipes 5 and fins 6, and is built in the indoor unit 1.

7 is a sensor case in which a sensor storage part 8 and a sensor support part 9 are formed on the left and right, and the sensor support part 9 is located below the sensor storage part 8;
It is attached to the front side of the heat exchanger 4, ie, the surface on the air suction port 2 side, via a heat insulating material 10. The sensor case 7 has a plurality of fitting pieces 11 protruding from the outer surface of the heat exchanger side wall 7a, and is attached to the heat exchanger 4 by fitting the fitting pieces 11 into the refrigerant pipes 5. The heat insulating material 10 is attached to the outer surface of the wall 7a so that its upper end is located below the upper end of the wall 7a.
A gap is provided between the upper end of a and the front surface of the heat exchanger 4.

Further, the sensor storage section 8 has a sensor support section 9.
It has a structure having an insertion opening 12 on a side surface and a ventilation hole 13 on the remaining three circumferential surfaces, and a plurality of ribs (protrusions) 14 extending left and right are formed on the inner surface of the wall 7a. The sensor support portion 9 is formed by a plurality of annular support pieces 15 located at appropriate intervals.

Reference numeral 16 denotes a humidity sensor having a built-in humidity sensing element and a humidity sensing hole 17 formed in the outer circumferential wall, which is housed in the sensor storage portion 8 through the insertion opening 12, and is spaced apart from the inner surface of the wall 7a by a rib 14. Reference numeral 18 denotes a temperature sensor which is supported by the sensor support part 9 by being inserted into the annular support piece 15.The head tip 18a, which has the best temperature sensitivity, is placed adjacent to the humidity sensing hole 17 of the humidity sensor 16 through the ventilation hole 13. I am keeping it there. Therefore, the humidity sensor 16 and the temperature sensor 18 come into contact with air under substantially the same conditions and sense humidity and temperature. Reference numeral 19 denotes a guide surface formed by chamfering the upper corner of the sensor case 7.

Therefore, in an embodiment with such a configuration,
Since a gap exists between the heat exchanger 4 and the humidity sensor 16 due to the heat insulating material 10 and the ribs 14, the thermal influence of the heat exchanger 4 on the humidity sensor 16 can be extremely small, and therefore the heat exchanger 4 When the humidity sensor 16 acts as a condenser, the humidity sensor 16 is heated and its performance deteriorates, and when it acts as an evaporator, condensation occurs on the humidity sensor 16, thereby preventing malfunction.

Further, when the heat exchanger 4 functions as an evaporator, condensed water 20 is generated on the surface of the heat exchanger 4 and flows down the surface. Almost no water flows down onto the upper surface of the case 7. Further, in the event that dew condensation water flows down to the sensor case 7 side, it will be guided to the heat exchanger 4 side by the guide surface 19. Therefore, the condensed water 20 enters the sensor case 7 through the vent 13 and the humidity sensor 16
No more getting it wet.

Further, both the humidity sensor 16 and the temperature sensor 18 can be installed in a single sensor case 7, and the humidity and temperature can be sensed by contacting the air under the same conditions, thereby increasing the reliability of operation control. can.

(Effects of the invention) As described above, according to the configuration of the invention, it is possible to reduce the thermal influence of the heat exchanger on the humidity sensor by using the insulation material, and to reduce the adverse effects caused by heat. A very simple configuration in which the heat exchanger is located below the upper end of the side wall and a gap is provided between the upper end of the wall and the heat exchanger takes measures against condensed water, and prevents the humidity sensor from malfunctioning due to condensed water, making it practical. This is an extremely useful idea.

[Brief explanation of the drawing]

FIG. 1 is an external view of an indoor unit implementing the present device, FIG. 2 is an exploded perspective view of the device, and FIG. 3 is a sectional view of the device. 4: heat exchanger, 7: sensor case, 7a: heat exchanger side wall, 10: heat insulator, 13: vent, 1
6: Humidity sensor.

Claims (1)

[Scope of utility model registration request] A sensor case having a vent is attached to the heat exchanger via a heat insulating material, and a humidity sensor is housed in the sensor case, and the upper end of the heat insulating material is positioned below the upper end of the side wall of the heat exchanger of the sensor case. A humidity sensor mounting device for an air conditioner, characterized in that a gap is provided between the upper end of the heat exchanger side wall of the sensor case and the heat exchanger.