JPH07110159A - Air conditioner - Google Patents

Abstract

PURPOSE:To make dew formation hard to occur at the rims of cold air outlets with less cast and electric power, improve the workability in installing a heater, and widen the cold air discharge angle. CONSTITUTION:Two or more cold air outlets 7a, 7b, 7c and 7d are provided around an air suction port 6. A dew formation preventing-heater 8 is provided along rims 9 on the opposite side of the air suction port 6 among the rims of the cold air outlets 7a, 7b, 7c and 7d.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner provided with an outlet for cold air.

[0002]

2. Description of the Related Art Generally, when the humidity is high, dew is generated on the edge of a blowout port from which cool air is discharged. Therefore, a dew condensation preventing heater may be provided along the entire circumference (all edges) of the air outlet to heat the edge of the air outlet so that dew does not easily occur on the edge. Further, Japanese Utility Model Application Laid-Open No. 1-169751 proposes that a dew condensation sensor is provided at the edge of the blowout port and the operating state of the blower or the compressor is controlled by a signal from this sensor to prevent dew condensation. ing.

[0003]

In the former case, since the dew condensation preventing heater is arranged along the entire circumference of the air outlet, the length of the heater becomes long and the power consumption is also increased. There wasn't. To give an example, in an air conditioner called a "3 horsepower 4-way ceiling cassette", the length of the heater was about 7 m, and the power consumption was about 56 w / h. . Moreover, if the heaters are arranged along the entire circumference of the air outlet, the workability may be deteriorated.

Further, the discharge angle of cold air may be reduced for the purpose of preventing dew condensation, but this may impose the discharge direction of the cool air, and it may be impossible to realize comfortable air conditioning. On the other hand, in the latter case, the operations of the blower and the compressor are controlled regardless of the demands of the user of the air conditioner, so it was hard to say that the operation is for achieving comfortable air conditioning.

It is an object of the present invention to make dew less likely to occur at the edge of an outlet of cold air with the least cost and electric power, to improve workability of assembling a heater, and to widen an outlet angle of cold air. It is a thing.

[0006]

In order to achieve this object, a first aspect of the present invention is to provide, among the edges of outlets through which cold air is discharged,
A dew condensation prevention heater is provided on the edge of the panel where cold air easily flows. A second aspect of the invention is such that the dew condensation preventing heater is provided along an edge on the side opposite to the suction inlet, of the edges of the cool air outlet arranged in the vicinity of the air inlet.

In a third aspect of the present invention, a dew condensation preventing heater is provided along the edges of the plurality of cold air outlets provided around the air inlet, which are opposite to the inlet. is there.

[0008]

In these inventions, the dew condensation preventing heaters are arranged on only one of the edges of the blowout port, and heating by this heater makes it difficult to cause dew condensation on the blowout port edge.
In addition, the edge where the dew condensation preventing heater is arranged is a portion where dew condensation is more likely to occur than the other edges, and thus dew condensation is less likely to occur. Moreover, the blowing angle of cold air can be made large.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 is an air conditioner called a four-direction ceiling cassette type air conditioner, which comprises a main body 2 and a decorative panel 3 (hereinafter simply referred to as "panel"). The main body 2 is arranged in the ceiling 4 and includes a heat exchanger,
A blower (not shown) is housed. The panel 3 is arranged below the main body 2 so as to be substantially flush with the ceiling 5. Reference numeral 6 denotes a suction grill (suction port), which is attached to the panel 3 substantially at the center thereof. Reference numerals 7a, 7b, 7c, 7d are blown air outlets for cold air cooled by the heat exchanger and are provided around the suction grill 6. Then, by operating the blower or the like, the indoor air is sucked into the suction grill 6 as shown by the solid arrow, and then cooled by the heat exchanger in the main body 2 and discharged from the respective outlets 7a, 7b, 7c, 7d. .

The features of the present invention (third invention) are as follows.
As shown by the broken line, the dew condensation prevention heater 8 is connected to the air outlet 7a.
Among the edges of ~ 7d, it is arranged along the edge 9 on the side opposite to the suction port. This arrangement is shown in FIG. 2 shows the back surface of the panel 3, 10 is an opening formed in the center of the panel 3, and a suction grill 6 (see FIG. 1) is attached to the opening 10. Reference numerals 11 denote motors respectively arranged at diagonal positions of the panel 3 for driving louvers (see FIG. 3) arranged at the air outlets 7a to 7d.
The two drive shafts 12 and 13 are arranged at a right angle.

Here, the dew condensation preventing heater 8 (hereinafter simply referred to as "heater") has the blowout ports 7a to 7 as indicated by the thick line.
Among the edges of d, they are arranged along the edges 9 on the side opposite to the suction port, and both ends 14 thereof are gathered in a corner portion 15 where no motor is arranged. Reference numeral 16 is an aluminum tape, which is attached to each corner and end of the panel 3 across the heater. As a result, the heater 8 is fixed to the panel 3.

FIG. 3 is a sectional view showing a state in which the heater 8 is attached only to the edge 9 on the side opposite to the suction port of the air outlets 7a to 7d. In FIG. 3, reference numeral 17 denotes a louver arranged at the air outlet 7a, which rotates about a shaft 18. The position of the louver 17 in the cooling operation is set to the state shown in FIG. 3, that is, the state inclined to the lower left in FIG. As a result, the cold air discharged from the air outlet 7a flows as indicated by the solid frame arrow. Here, the cold air flows along the edge 9 on the side opposite to the suction port than the edge 19 on the side of the suction port 10. Therefore, in the vicinity of the edge 9 on the side opposite to the suction port, the room air is entrained by the flow of cool air as indicated by the solid arrow. Here, since the humidity and the temperature of the room air are higher than the temperature and humidity of the cold air, dew tends to be generated on the edge 9 on the side opposite to the suction port. However, a heater 8 is provided on the edge 9 on the side opposite to the suction port, and the vicinity of the edge 9 is heated to about 35 ° C. Therefore, even if dew is generated on the edge 9, the dew is heated and evaporated, and as a result, the dew phenomenon is less likely to occur on the edge 9 on the side opposite to the suction port. Since the heater 8 is provided on the edge 9 on the side opposite to the suction port as described above, the blowing direction of the cold air can be set to the side opposite to the suction port without considering the possibility of dew condensation, and the angle for discharging the cool air is set to a large value. be able to.

Further, the heater 8 is arranged in a straight line and four corners, which is a very simple combination, and the workability of assembly and the shortening of the heater can be achieved. Incidentally, this FIG.
In the above, reference numeral 20 denotes a rib provided on the back surface of the decorative panel, and by fitting the heater 8 between the ribs 20, the heater 8 can be temporarily fixed and heat can be conducted to the edge 9 via the rib. Illustration of this rib is omitted in FIG.

On the other hand, at the edge 19 on the suction port side, the above-mentioned arrangement of the heater 8 is omitted because the above-mentioned room air is less likely to be entrained and the dew is less likely to occur. Further, the tip 21 of the louver 17 is shown in FIG.
Is rotated so as to face downward, and hot air is discharged downward.

Here, when the air conditioner has a power of about 3 horsepower, the length of the heater 8 is about 3.5 m, which is 7 m of the conventional heater.
Compared with, the length could be reduced to about half. As a result, the power consumption of the heater can be reduced to about half (56 W / h → 28 W / h) compared with the conventional one. FIG. 4 shows another embodiment of the present invention. Reference numeral 40 denotes an indoor unit of a separation type air conditioner attached to an indoor wall surface, which includes a heat exchanger 41, a blower 42, a drain pan 43, an air filter 44, and vertical blades 45. , Horizontal blade (louver) 46
Etc. are stored. Then, by operating the blower 42, the indoor air is sucked into the indoor unit 40 through the suction port 48 of the front panel 47 as shown by the solid arrow, and is heated or cooled by the heat exchanger 41, and then blown. It is discharged from the outlet 49.

In particular, when the horizontal blades 46 are set relatively downward as shown in FIG. 4 during the cooling operation, the cool air is discharged obliquely downward to the left with respect to the air outlet 49. In other words, since the cold air flows along the lower end 50 of the air outlet 49, the inclusion of room air as indicated by the broken line arrow occurs. Although the phenomenon of dew condensation tends to occur on the lower wall 51 due to this entrainment, the dew condensation hardly occurs on the lower wall due to the heating by the heater 8.

[0017]

As described above, in the first aspect of the present invention, the dew condensation preventing heater is provided on the edge of the outlet from which the cool air is discharged, which is the one on which the cool air easily flows. So, on the edge of the outlet that tends to cause dew,
It is possible to reduce the generation of dew.

According to the second aspect of the invention, the dew condensation preventing heater is provided along the edge of the cool air blowout port which is arranged in the vicinity of the air suction port on the side opposite to the suction port. The blowing direction can be set large (widening). According to the third aspect of the invention, the dew condensation preventing heater is provided along the edges of the plurality of cool air outlets provided around the air suction port on the side opposite to the suction port. A simple linear combination is sufficient, and the heater can be shortened and the heater mounting work can be simplified.

[Brief description of drawings]

FIG. 1 is a perspective view of an air conditioner of the present invention.

FIG. 2 is a plan view of a decorative panel of the air conditioner shown in FIG.

FIG. 3 is a cross-sectional view of the air outlet of the air conditioner shown in FIG.

FIG. 4 is a cross-sectional view of an essential part of an air conditioner showing another embodiment of the present invention.

[Explanation of symbols]

 3,47 Panels 7a, 7b, 7c, 7d, 49 Blow-out port 8 Dew condensation prevention heater 9 Edge

Claims (3)

[Claims] 1. In an air conditioner having a panel provided with an outlet for discharging cold air, a dew condensation preventing heater is provided at an edge of the outlet where the cold air easily flows along the panel. An air conditioner characterized by being provided. 2. An air conditioner in which an air inlet and a cold air outlet are provided close to each other, and a dew condensation preventing heater is provided along an edge of the outlet that is opposite to the inlet. An air conditioner characterized by that. 3. An air conditioner in which a plurality of cold air outlets are provided around an air inlet, and a dew condensation preventing heater is provided along the edges of the air outlets on the side opposite to the inlet. An air conditioner characterized by being provided.