JPS5930824Y2 - air conditioning equipment - Google Patents

Description

[Detailed description of the invention] This invention relates to air conditioning equipment such as heaters and air conditioners.
The purpose is to improve the sensitivity of room temperature detection and enable efficient air conditioning.

Generally speaking, this type of air conditioner has a bottom suction and top suction system for heaters, and a bottom suction system for air conditioners, but recently space heaters have also started to use bottom blow and top suction systems to increase the heating effect. All of the air conditioning equipment has bottom blowout and top suction.

This type of air conditioning equipment is equipped with a room temperature detection element that detects the room temperature and controls the operation of the equipment, so that the room temperature is always maintained at a constant temperature.

However, in the conventional type, this room temperature detection element is installed near the suction port 22 of the device body 21 as shown in Figure 4.5, and although there is no problem during operation, the room temperature drops considerably when restarting after the room temperature has dropped. There was a problem that the vehicle would start operating after

That is, there was a problem that the room temperature detection sensitivity at the time of restarting operation was poor, and effective air conditioning such as heating (or cooling) could not be performed.

This is especially noticeable in heaters.

That is, in a heater, when the operation is stopped, an upward draft is generated due to the thermal energy of the heat exchanger 23, as shown by arrow a in FIG. 5, and this draft airflow heats the room temperature detection element 24 after exchanging heat with the heat exchanger. Because it does.

The present invention has been made in view of these points, and eliminates the above-mentioned conventional drawbacks.

One embodiment will be described below with reference to the drawings. 1 is a main body, 2 is a front plate thereof, and has an inlet 3 at the upper part and an outlet 4 for blowing out hot air at the lower part.

5 is an operation switch knob, 6 is a temperature adjustment knob for a room temperature detection element, and 7 is a leg.

A heat exchanger 8 is disposed in the upper part of the main body 1, and is constructed by providing a heat exchange pipe 9 with a large number of fins 10.

Reference numeral 11 denotes a blowing fan disposed below the heat exchanger 8, which is driven by a motor 12.

Reference numeral 13 denotes a fan casing, and its front plate 13a is arranged to form a short circuit passage 14 between the main body front plate 2 and vertically connecting the suction port 3 and the blowout port 4.

This front plate material 13a is provided with a recess 15 in the horizontal direction for forming a space for installing an element between it and the main body front plate 2.

Reference numeral 16 denotes a room temperature detection element disposed in this recess 15, which is connected to the recess 1 from the controller section 17 on the right side of the main body via a lead wire 16a.
5, and is wired to detect the room temperature and control the operation of the ventilation fan 11.

In the above configuration, when the operation is started, indoor air is sucked in through the suction port 3, heat exchanged with the heat exchanger 8, and then the air is sucked into the air outlet 4.
It is blown out into the room and air-conditions the room.

At this time, a part of the indoor air sucked in from the suction port 3 is diverted to the short circuit passage 14 as indicated by the arrow and blown directly into the room.

The room temperature detection element 16 detects the temperature of this divided air, and when the temperature reaches a set point, the operation of the backflow fan 11 is stopped.

That is, during operation, the indoor air flowing through this short circuit passage 14 is detected to perform operation control.

On the other hand, after the operation is stopped, the room temperature is detected by the airflow as shown below and the operation is controlled.

That is, when the operation is stopped, forced air is no longer blown by the blower fan 11, and a draft effect is generated in the main body 1 by the heat or cold air of the heat exchanger 8, and an upward air current or a downward air current as shown by the broken line is generated.

That is, a natural circulation flow occurs in which indoor air is sucked into the main body 1 through the suction port 3 or the blowout port 4 and flows out from the blowout port 4 or the suction port 3.

At this time, a part of the natural circulation flow is diverted to the short circuit path 14 and comes into contact with the room temperature sensing element 16.

The air flow flowing through this short circuit passage 14 is not heated or cooled by the heat exchanger 8 unlike the air flow passing through the heat exchanger section of the main body 1, so that the air flow is very close to room temperature, and the air flow is very close to room temperature. The room temperature detection will be accurate.

In other words, as the indoor temperature drops, it is sensitively detected and starts operating.

Further, in this embodiment, since the recess 15 is provided for installing the room temperature sensing element, the room temperature sensing element 16 can be installed while making the short circuit passage 14 narrow to prevent excess air from short circuiting. I can do it,
Moreover, the presence of this recess 15 allows the airflow passing through this passage 14 to be drawn toward the room temperature detection element 16, which has the advantage of further improving the sensitivity of room temperature detection.

Note that the above embodiment has been described as one of the best embodiments of the present invention, and the present invention is not limited to this embodiment.

As is clear from the above description of the embodiments, according to the present invention, the air conditioner of the bottom suction top blow type can sensitively sense the room temperature not only during operation but also after the operation has stopped, and provides efficient air conditioning without delay in restarting operation. It has great practical value.

In addition, in this invention, a short circuit path is formed between the plate material on the front side of the fan and the front plate of the main body.
There is no increase in the number of parts, and since a recess is provided in the short circuit passage and a room temperature detection element is placed here, the short circuit passage is made narrow to prevent excess air from short circuiting. Moreover, this recess allows air to be drawn into the room temperature sensing element, thereby improving its operational stability.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a front view with the front plate removed, FIG. 3 is a sectional view thereof, FIG. 4 is a perspective view showing a conventional example, and FIG. 5 is a sectional view thereof. 1...Main body, 2...Front plate, 3...
...Suction port, 4...Blowout port, 8...Heat exchanger, 11...Fan, 13a...
・Plate material, 14...Circuit passage, 15...
...Recess, 16...Room temperature detection element.

Claims (1)

[Scope of utility model registration request] A main body equipped with a heat exchanger and a fan that supplies air to the heat exchanger has an inlet in the upper part and an outlet in the lower part, and a short circuit passage is provided in the vertical direction between the inlet and the outlet, The short circuit path is formed between a plate on the front side of the fan and the front plate of the main body, and a recess is provided in at least one of the plate or the front plate of the main body.
Air conditioning equipment has a room temperature detection element installed in this recess.