JPS6143174Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air conditioning controller that includes a temperature sensor therein and controls air conditioning operations separately from an air conditioner, and particularly relates to an improvement in its housing.

In the conventional type of air conditioner widely used in general households, the control panel that controls the operation of the air conditioner is integrated with the air conditioner itself, and the temperature sensor for temperature control is attached to the air conditioner. installed in the air intake hole. When the temperature detected by the temperature sensor reaches a temperature preset on the control panel, the air conditioning operation is stopped, or when the temperature deviates from the preset temperature, the air conditioning operation is started. In this case, since the air taken into the air conditioner has a certain velocity, the temperature responsiveness of the temperature sensor is good.

However, recently, for the purpose of operational convenience, the control panel function has been separated and moved to a location other than the main unit, instead of setting the temperature and other operating elements on the control panel on the air conditioner each time. Installable wired or wireless so-called remote control controllers have become popular. Furthermore, in this case, some remote controls have a built-in temperature sensor in order to detect and control the temperature around the user.

A problem with the above-mentioned controllers with built-in temperature sensing sensors is that the responsiveness of temperature detection is poor. The controller casing is generally made of a synthetic resin molded product with a thickness of 2 to 3 mm for mass production and design reasons, so even if many ventilation holes are provided, the heat generated by the electrical components inside will be reduced. Of course, changes in outside air temperature are not easily transmitted to the temperature sensor inside the housing due to the large heat capacity and low thermal conductivity of the housing itself. Although complex control operations are generally possible using electronic means such as microcomputers, the intended functions cannot be obtained because temperature measurement, which is the basis of control, cannot be performed quickly.

To address this issue, a small electric heater is installed inside the housing to create a semi-forced air flow.
Possible methods include making it easier for outside air to flow into the housing, or installing a small motor fan inside the housing to circulate air, but such methods are undesirable from a cost standpoint and also create problems such as restrictions on component placement and large size. In particular, in the case of wireless remote controls, which are naturally required to be completely portable, batteries are used as the controller power source, but the above-mentioned methods increase power consumption and are not practical.

The present invention solves the above-mentioned drawbacks at low cost by constructing a part of the controller's casing from a metal plate with high thermal conductivity and low heat capacity, and installing a temperature sensor inside it. This objective is achieved by not only making it possible to quickly detect the external air temperature by tightly fixing the housing, but also minimizing the influence of unnecessary heat from the housing body.

The present invention will now be described with reference to the accompanying drawings.

Figure 1 shows an example of a controller for a wireless remote control air conditioner, in which a is a top view, b is a side view,
c is a bottom view.

In the wireless remote control air conditioner controller shown in Fig. 1, when the desired temperature is set with the temperature setting knob 1, the internal temperature sensor 2 detects the ambient temperature, and the temperature and set temperature are adjusted. If there is a difference, a light signal is transmitted via the light emitting element 3 to command the start of air conditioning operation. The optical receiver on the air conditioner body side receives this signal and starts air conditioning operation. When the temperature sensor 2 detects that the air temperature has reached the set temperature, the air conditioning operation is stopped using the same procedure as above. The pushbutton switches 4, 5, etc. perform additional functions such as turning on/off the power supply and selecting whether to display or hide the temperature display 6 that displays the ambient temperature.

The casing molded from synthetic resin consists of an upper casing 7 and a lower casing 8, which are assembled by fitting together. 9 is a leg, and 10 is a ventilation hole in the housing. A window-like notch 11 is provided at the bottom of the lower housing 8, and a temperature sensor mounting plate 12 is attached so as to fit into the notch 11. The temperature sensor mounting plate 12 is provided with a large number of ventilation holes 13.

FIG. 2 is an enlarged view showing the relationship between the lower housing 8 and the temperature sensor mounting plate 12, where a is a plan view of the part showing the above relationship as seen from inside the housing, and b is a two-dot chain line A- It is a side view of the cross section along A.

Along the inner periphery of the window-like cutout 11 of the lower housing 8, several pedestals 14 and a thin pin portion 15 that is integral with and concentric with the pedestals 14 are provided. The appropriate height of the pedestal 14 is 1 to 1.5 mm. On the other hand, the pin portion 15 is located around the temperature sensor mounting plate 12.
A matching hole is provided, and after fitting, the pin portion 15 is heated and melted to fix the temperature sensor mounting plate 12. At this time, the temperature sensor mounting plate 12
The gap 16 between the notch 11 and the notch 11 is approximately uniform over the entire circumference, and is suitably about 1 mm.

The temperature sensor 2 is closely installed approximately in the center of the temperature sensor mounting plate 12, but in this case,
It is desirable to fix with adhesive 17 having high thermal conductivity. Furthermore, the shape of the temperature sensing sensor mounting plate 12 is such that the installation part of the temperature sensing sensor 2 is
It would be more effective to increase the contact area with the outside air by protruding outward to the extent permitted or by making the cross section a groove-shaped structure.

As described above, the present invention provides an air conditioning controller that includes a temperature sensor inside and controls the air conditioning operation separately from the air conditioner. It is a thin metal plate with a sensing sensor attached to it and fixed by several point contacts, and by adopting this structure, the drawbacks of the conventional temperature followability can be greatly improved.

Note that even in the above structure, consideration must be given to making it less susceptible to the effects of radiant heat from other heating elements inside the housing.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is an example of a controller for a wireless remote control air conditioner, where FIG. 1 is a top view, FIG. 2 is a side view, FIG. 3 is a bottom view, and FIG.
The figure is an enlarged view showing the relationship between the lower housing and the temperature sensor mounting plate in the controller, where a is a plan view of the part showing the above relationship from inside the housing, and b is a side view of the cross section taken along the two-dot chain line. 2: temperature sensor, 7, 8: housing, 11:
Window-shaped notch, 12: Temperature sensor mounting plate.

Claims (1)

[Scope of utility model registration request] In an air conditioning controller that includes a temperature sensing sensor inside and controls air conditioning operations separately from the air conditioner, a thin metal housing with a temperature sensing sensor tightly attached to the notch of a partially cut out synthetic resin casing. An air conditioning controller characterized by a plate fixed by several point contacts.