JPS5920606Y2 - Air conditioner outdoor unit - Google Patents

Description

[Detailed Description of the Invention] This invention relates to outdoor units 1 to 1 of an air conditioner, and particularly relates to the structure of a heat exchanger.

In recent years, efforts have been made to make the indoor units of air conditioners thinner and lighter, but outdoor units are also strongly desired to be thinner, lighter and smaller in order to be installed on window frames, handrails, etc. It was rare.

In this invention, a heat exchanger is arranged around a blower motor fixed to a cabinet I, and at least a part of the blower is inserted into the front end surface of the heat exchanger to effectively arrange the blower. The purpose is to improve heat exchange efficiency by making the overall shape thinner and making the air volume distribution more uniform.

This invention will be explained in detail below with reference to the embodiments shown in FIGS. 1 to 5. 1 is an outdoor unit I of an air conditioner.
The base 2 and the cabinet 3 form a housing, and the cabinet 3 is made of plastic from the front surface 4, the top surface 5, and the left and right sides 6, 7.The front surface 4 has an air outlet 8, and the top surface 5 and the left side surface 6 are formed with an air suction port 9.

On the other hand, the base 2 has an L-shape with a ring-shaped back surface 10 and a bottom surface (not shown), and a partition plate 13 that partitions the heat exchange chamber 11 and the compressor chamber 12 is integrally formed of plastic. At the same time, an air suction port 9 is formed on the bottom surface (not shown) of the base 2, and a substantially ring-shaped rear air suction port 14 is formed on the back surface 10.

A compressor 15 is installed in the compressor chamber 12.

Reference numeral 16 denotes an electric motor for a blower, which is fixed to a mounting boss 17 integrally molded at the center of the back side 10 of the base 2, supported by a rotating shaft 18, and is a blower 19, etc. that faces the air outlet 8. A blower device 20 is configured.

Reference numeral 21 denotes a ring-shaped heat exchanger that surrounds this air blower 20 and is provided opposite to the air inlet 9 of the base 2 and cabinet 3 and the ring-shaped rear air intake 14, and is connected to the heat exchanger tube 22. Consisting of needle-like fins 23,
When the number of winding stages of the inner winding part 24 is 5, the number of winding stages of the outer winding part 25 is formed to be seven stages, and the inner winding part 24 and the outer winding part 25 have a dimension a, and the front surface is The outer winding part 25 is formed by a double winding part 27 and a single winding part 28, and the heat exchanger tube 22 of the inner and outer winding parts 24 and 25 is connected to a connecting tube ( (not shown), and furthermore, the inner winding part 2
4 and the pipe pitch b of the double winding part 27 of the outer winding part 25 are made the same dimension, and the outer winding part 2
The pipe pitch C of the single winding part 28 of 5 is the same as that of the double winding part 27.
The dimensions are formed smaller so that the pipe pitch is denser than the pipe pitch b.

At this time, at least a part of the blower 19 of the blower device 20 is connected to the single-wrap portion 28 of the outer wrap portion 25 of the heat exchanger 21.
It is positioned inside in the depth direction from the front end surface so that it can be stored with a slight gap between the inside and the inside.

26 is a leg that supports the unit l-1 and also supports the bottom surface (
(not shown) to improve the efficiency of suction through the air suction port 9 at the bottom.

The operating state of the heat exchanger of the air conditioner configured as described above will be explained.

First, the compressor 15 is activated, and in the cooling operation, the heat exchanger 21 starts dissipating heat.

At the same time as this heat dissipation, the blower 20 is also operated, and the blower 19
As a result of the rotation of the The air is blown out from the air outlet 8.

At this time, the suction ports 14.9.9 on the back surface 10 and the peripheral side surface 6 are sufficiently opened, and there is almost no ventilation resistance.

On the other hand, the blower 19 is located in front of the double-wound inner-wound part 24 and inside the single-wound part 28 of the outer-wound part 25, while maintaining a slight gap inside the front end surface of the outer-wound part 25 in the depth direction. Furthermore, since the front end of the outer winding part 25 - the double winding part 28 is formed densely, the amount of ventilation between the double winding part 27 and the single winding part 28 is kept constant and unnecessary ventilation is avoided. There's nothing to do.

As described above, this idea consists of a cabinet whose front, top, left and right sides are made of plastic, and a base whose back and bottom are made of plastic in an L-shape. A heat exchange room and a compressor room are formed by partitioning the heat exchange room, and a blower device consisting of a blower and a blower electric motor is provided in the heat exchange room,
In a device in which a heat exchanger is provided around this blower device, the blower device is fixed to the back of the base of the heat exchange chamber, and the heat exchanger is arranged in a double overlapping state consisting of an inner wound portion and an outer wound portion. In addition to forming the pipe into a coil shape, the number of winding steps between the inner and outer winding parts is increased so that the outer winding part has more windings, and the pipe pitch b of the double winding part of the inner and outer winding parts is set to the same dimension. At the same time, since the pipe pitch C of the single-wound part of the outer winding part is formed smaller than the pipe pitch B of the double-wound part, the ventilation resistance is made larger than that of the double-wound part, thereby reducing the amount of ventilation. The effect is to achieve the best heat exchange efficiency by balancing the amount of ventilation commensurate with the double-wound part, which has a large heat exchange area per unit, and the amount of ventilation, which is commensurate with the single-wrap part, which has a small heat exchange area per unit. This was made possible by extremely advantageous means in terms of cost and workability, and the blower was arranged so that at least a part of it was placed inside the front end face of the heat exchanger, reducing the depth dimension. This also has the effect of making it possible to achieve thinning by reducing the size.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the outdoor unit of the air conditioner of this invention, Fig. 2 is a cross-sectional view of the central part of Fig. 1, Fig. 3 is a front view showing the heat exchanger of this invention, and Fig. 4 is a perspective view showing the outdoor unit of the air conditioner of this invention. The figure is I in Figure 3.
5 is a dimensional explanatory diagram of FIG. 4. In addition, 2 is a base, 3 is a cabinet, 11 is a heat exchange chamber, 19 is a blower, 21 is a heat exchanger, 24 is an inner winding part, 2
5 is an outer winding part, 27 is a double winding part, and 28 is a single winding part.

Claims (1)

[Scope of utility model registration request] Cabinets 1~ whose front, top, left and right sides are made of plastic, and cabinets whose back and bottom are made of plastic■7
The formed base constitutes a casing, and the base is divided into a heat exchange chamber and a compressor chamber by a partition plate, and a blower device consisting of a blower and a blower electric motor is provided in the heat exchange chamber; In a device equipped with a ring-shaped heat exchanger surrounding the air blower, the heat exchanger is formed into a coil shape in a double overlapping state consisting of an inner winding part and an outer winding part, and the inner winding The number of winding stages between the inner and outer winding parts is increased so that the outer winding part is larger, and the pipe pitch b of the double winding part of the inner and outer winding parts is set to the same dimension, and the single winding part of the outer winding part is To an outdoor unit 1 of an air conditioner, the pipe pitch C is smaller than the pipe pitch b of the double winding part.