JPH0445327A - Air conditioning apparatus - Google Patents

Abstract

PURPOSE:To thin the apparatus and prevent a heat exchanging efficiency of a heat exchanger from being lowered by constructing the cross section of a heat exchange pipe in the lateral cross section of the heat exchange into a square shape and into a zigzag shape with respect to the direction of air flow. CONSTITUTION:A heat exchanger 12 contained in a body casing 10 is disposed for the purpose of making thinner an air conditioning apparatus such that it is slanted a predetermined angle, e.g. 60 deg. with respect to the direction of an air flow. The heat exchanger 12 is constructed by arranging four adjacent heat exchange pipes 18 into a square configuration C. More specifically, it is constructed such that a pipe arrangement on the cross section of the heat exchanger pipe 18 on the lateral cross section of the heat exchanger 12 is of a square, and the pipe arrangement parallel cut down by upper and lower front cut parts 19 and slanted 60 deg. for example. Hereby, the heat exchange pipe 18 is disposed in zigzag manner in the direction of the air flow, and the downstream heat exchange pipe 18 does not substantially undergo the influence of a waterstop region caused by the upstream copper pipe 18. Thus, heat exchange efficiently is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an air conditioner, and particularly to an improvement in an air conditioner installed in a ceiling or embedded in a wall of a house.

(Conventional technology) Air conditioners that are installed underground in the ceiling or side walls of houses are called built-in air conditioners. Therefore, it is desired to make the device as thin as possible.

For example, a built-in air conditioner installed in the ceiling (
Ceiling cassette type air conditioners are severely restricted by the dimensions of the ceiling and ceiling, and as people seek more comfort in their residential spaces, ceiling heights are becoming higher and higher, while the ceiling and ceiling are becoming narrower.

Therefore, in order to reduce the thickness of the built-in air conditioner, the heat exchanger disposed inside the air conditioner is arranged at a predetermined angle along the wind flow direction, that is, from the windward side to the leeward side. is commonly practiced.

As shown in FIG. 8, the conventional heat exchanger 1 generally has heat exchange (copper) pipes 2 arranged in a staggered manner, that is, the cross section of the heat exchange pipes 2 in the cross section of the heat exchanger 1 is arranged in an equilateral triangle. A
Usually, these are cut in parallel at upper and lower front cut portions 3 and arranged at an angle of 60°, for example.

(Problem to be solved by the invention) However, unlike conventional air conditioners, copper pipes 2
When heat exchangers 1 arranged in a staggered manner are arranged in an air conditioner at an angle of 60 degrees as shown in FIG. The problem is that the copper pipes 2 arranged in a line and located on the leeward side are greatly influenced by the stop area B caused by the copper pipes 2 located on the windward side, and the heat exchange efficiency of the heat exchanger 1 decreases. There was a point.

The present invention has been made in consideration of the above-mentioned circumstances, and by arranging the heat exchanger at an angle, it is possible to reduce the thickness of the heat exchanger and prevent the heat exchange efficiency of the heat exchanger from decreasing. The purpose is to provide an air conditioner with

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, an air conditioner according to the present invention is an air conditioner in which a heat exchanger is arranged inside with a heat exchanger inclined at a predetermined angle along the flow direction of the wind. The cross-sectional arrangement of the heat exchange pipes in the cross section of the heat exchanger is square, and is arranged in a staggered arrangement with respect to the flow direction of the wind.

(Function) According to the present invention configured as described above, when the heat exchanger is cut at the front cut portion, inclined, and placed inside the air conditioner, the heat exchanger is heated in the direction of the flow of the wind. Since the exchange pipes are arranged in a staggered arrangement, it is difficult for the leeward side to be affected by the cut-off area caused by the heat exchange pipes located on the windward side, which improves heat transfer efficiency and improves heat exchange efficiency. can.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 shows an example in which the air conditioner according to the present invention is applied to a ceiling cassette type air conditioner as a built-in air conditioner. In this air conditioner, a main body casing 10 is installed in the ceiling of a building. A blower 11 and an indoor heat exchanger 12 are housed within the main body casing 10, while a drain pan 13 is provided below the heat exchanger.

On the other hand, a suction grill 14 is provided on the lower surface side of the main casing 10.
and a blowout grill 15 are respectively provided. Indoor air sucked in from the suction grill 14 by the operation of the blower 11 is guided to the heat exchanger 12, and as it passes through the heat exchanger 12, heat is exchanged and becomes cooling air or warm air. The air is then blown out in a predetermined direction by a blow-off louver 16 to cool and heat the room.

By the way, the heat exchanger 12 housed in the main body casing 10 is arranged at a predetermined angle, for example, 6 G', with respect to the flow direction of the wind, in order to reduce the thickness of the air conditioner.

The heat exchanger 12 is constructed by arranging four mutually adjacent heat exchange pipes 18 in a square shape C, as shown in FIG. That is, the pipe arrangement formed by the cross section of the heat exchange pipes 18 in the cross section of the heat exchanger 12 is arranged in a square shape, and this is cut in parallel by the upper and lower front cut portions 19, for example, at 60°. It is arranged at an angle. In addition, the code|symbol 20 is a heat exchange fin.

As a result, the heat exchange pipes 18 are arranged in a staggered manner in the direction of wind flow, and the heat exchange pipes 18 on the leeward side are hardly affected by the stop area provided by the copper pipes 18 on the windward side, resulting in heat exchange efficiency. It is possible to improve the

Figure 3 shows the outlet duct connection port 21 and the suction duct connection port 2.
2 is a schematic cross-sectional view of a thin duct type air conditioner equipped with a heat exchanger 12A.In order to reduce the thickness of this type of air conditioner, a heat exchanger 12A is arranged in an inclined state within a main body casing 10B. The heat exchanger 12 shown in FIG. 1 above can be used as the heat exchanger 12A.

In the case of this duct type air conditioner, the air sent from the blower 11 through the suction duct connection port 21 is transferred to the heat exchanger 12A.
After passing through the heat exchanger 12A, go straight to the outlet duct connection port 2.
Head to 2.

Figures 4 to 7 show an air conditioner built into the wall of a house. In this type of air conditioner as well, the heat exchanger 12B is arranged in an inclined state inside the main body casing IOB in order to reduce the thickness of the air conditioner. The heat exchanger 12 shown in FIG. 1 above can be used as the heat exchanger 12B.

In this embodiment, the refrigerant auxiliary pipe 23 is connected to the heat exchanger 12B.
Located in front of the drain pan 13 under the main body casing I
It is accommodated within the height and width dimensions of the OB and does not protrude from the main casing IOB. Moreover, the refrigerant pipe 24 from outside can be passed forward from a space provided below the electrical component box 25 and penetrating back and forth.

With this configuration, the auxiliary refrigerant pipe 23 and the refrigerant pipe 24 from outside can be connected by simply removing the heat insulating material 26.

Note that 27 is a fan motor.

〔Effect of the invention〕

Since the present invention has the above-described configuration, the heat exchange pipes of the heat exchanger have a configuration as if they were arranged in a staggered manner with respect to the direction of wind flow, and are not affected by the cutoff area on the leeward side. This has the effect of improving the heat transfer coefficient and making it possible to provide a thin and compact air conditioner without reducing the heat exchange coefficient.

[Brief explanation of drawings]

Fig. 1 shows an embodiment of the present invention; Fig. 2 is a sectional view showing the arrangement of a heat exchanger; Fig. 2 is a schematic sectional view of a ceiling cassette type air conditioner; and Fig. 3 is an air conditioner according to the present invention. 4 to 7 show a wall-embedded air conditioner, FIG. 4 is a schematic sectional view, and FIG. Cross-sectional view along, No. 6
The drawings are a side view taken along the line Vl-VI in FIG. 4, FIG. 7 is a perspective view, and FIG. 8 is a sectional view showing the arrangement of a conventional heat exchanger. 10, IOA, 1. OB...Body casing, 11.
...Blower, 12,1 13...Drain pan, 1 Front cut section, 2 Refrigerant piping from outside. 2A, 12B... Heat exchanger, 8... Heat exchange pipe, 19... 3... Refrigerant auxiliary piping, 24...

Claims (1)

[Claims] In an air conditioner in which the heat exchanger is arranged internally with a predetermined angle of inclination along the wind flow direction, the cross-sectional arrangement of the heat exchange pipes in the cross section of the heat exchanger is square, and An air conditioner characterized by being configured in a staggered arrangement.