JPH0734263Y2 - Air conditioner outdoor unit - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an outdoor unit of an air conditioner, particularly to its entire structure and arrangement of main parts.

[Conventional technology]

FIG. 4 shows a refrigerant piping system diagram of a conventional general air-cooling type air conditioner, and in the cooling operation, as shown in the figure, the refrigerant is discharged from the compressor (15) housed inside the outdoor unit (A). The high-temperature and high-pressure refrigerant gas is discharged from the discharge pipe (16) and the four-way valve (21).
The refrigerant gas flowing into the heat exchanger (3) through the heat exchanger exchanges heat with the outdoor air supplied by the blower (9) to become a refrigerant condensate, passes through the connecting refrigerant pipe (17), and heats the indoor unit (B). Refrigerant piping (17) that flows into the exchanger (18), absorbs heat from the room air, cools the room, and becomes refrigerant gas again to connect it.
Then, the gas flows into the accumulator (19) of the outdoor unit (A), and only the gas-phase refrigerant is separated and returned to the compressor (15).

In recent years, this type of air conditioner is often used as an air conditioner for large buildings and the like, and the outdoor unit (A) and the indoor unit (B) may be installed at considerably different locations. Therefore, the connecting refrigerant pipe (17) becomes long, and the amount of refrigerant enclosed in the refrigerant circuit of the air conditioner is increasing. Such an air conditioner melts frost on the outdoor heat exchanger in winter. Therefore, when the defrost operation is started, a considerable amount of the refrigerant becomes the liquid phase refrigerant and is accumulated in the accumulator (19).
Therefore, the volume of the accumulator is determined by the amount of refrigerant in the entire refrigerant circuit, and if it is too small, the liquid-phase refrigerant overflows and flows into the compressor, causing liquid compression operation and damaging the compressor. Therefore, the size of the accumulator is inevitably increased with the recent increase in the length of the pipe.

Conventionally, the structure of the outdoor unit of this type of air conditioner has a structure in which a heat exchanger (3) is erected so as to form three or four side surfaces on an underframe (1) as shown in FIG. ), The compressor (15), control device (20), accumulator (19), etc. are arranged on the underframe and the heat exchanged air is supplied to the upper part. It was configured with a blower (9).

[Problems to be solved by the device]

Since the conventional outdoor unit is configured as described above, when increasing the size of the accumulator (19), as shown in Fig. 6 (b), the heat exchanger is attached to the lower part of the heat exchanger. It is necessary to newly provide the member (2), which increases the cost. Further, as shown in FIG. 6 (c) to avoid it, when the heat exchanger (3) is raised, the additional air volume in the lower part of the heat exchanger (3) and the part far from the blower (9) decreases. However, there are problems that the utilization efficiency of the heat exchanger (3) is reduced, and that frost is likely to occur during the heating operation in the lower portion where the wind speed is reduced. Also, if the inner diameter of the accumulator (19) is increased to increase the inner volume, the size of the underframe (1) needs to be increased, and the installation area of the outdoor unit becomes large. . Further, when the accumulator (19) becomes large and the surface area becomes large, it becomes easy to be affected by the heat radiation from the compressor (15) during cooling operation and the suction air heated by the heat exchanger. (19) was heated, and the superheat of the refrigerant sucked into the compressor became too large, and the cooling capacity of the air conditioner deteriorated.

On the other hand, in the configuration of the conventional outdoor unit, since the air suction surfaces to the heat exchanger are three or four, it is necessary to provide a space around the outdoor unit when installing the outdoor unit. Therefore, the area required for installing the outdoor unit is considerably larger than the floor area of the outdoor unit itself. This has become a serious problem when a large number of outdoor units are installed on the roof of a large building as shown in FIG. 7 as in recent years.

This invention was made in order to solve the above-mentioned problems, and by installing the outdoor units in a concentrated manner, the installation area was greatly reduced and the accumulator was made larger.
It is an object of the present invention to obtain an apparatus that can cope with the need for adding new members, lowering the utilization efficiency of heat exchangers, and increasing the size of underframes.

[Means for Solving the Problems]

The outdoor unit of an air conditioner according to the present invention comprises a left and right side plate that is erected along both left and right sides of an underframe to which a heat exchanger mounting member that extends in the left and right direction is attached, and the heat exchanger mounting member. A pair of flat plate heat exchangers each having a lower end attached along the member and formed in a V shape with the upper part open, and the upper end fixed to the upper part of the outdoor unit, and this heat exchanger. And a blower for supplying heat-exchanged air to the heat exchanger, the compressor being placed in one space below the heat exchanger divided into the front and rear by the heat exchanger, Place the accumulator in the space of the space and change the height of the accumulator, the height of the heat exchanger mounting member and the height of the left and right side plates according to the accumulator capacity so that the relative positional relationship between the heat exchanger and the blower does not change. The one .

[Action]

In the outdoor unit of this invention, when enlarging the accumulator, the height of the heat exchanger mounting member and the left and right side plates are increased, and the mounting positions of the heat exchanger and the blower are changed without changing their relative positions. By increasing the height, it is possible to accommodate a large accumulator without changing the wind speed distribution of the heat exchanger and without increasing the floor area of the outdoor unit. Moreover, since the accumulator and the compressor are arranged with the two heat exchangers separated from each other and the accumulator is on the primary side of the intake air, even if the surface area of the accumulator increases, heat radiation from the compressor and The adverse effect of waste heat on the secondary side of the heat exchanger can be avoided.

On the other hand, in the outdoor unit according to the present invention, since the air suction surfaces are the two front and rear surfaces, the left and right side surfaces can be installed in close contact with other units or the wall surface of the building, and the installation area can be greatly reduced. .

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. First
In the figure, a heat exchanger mounting member (2) extending in the left-right direction is mounted on the underframe (1), and left and right side plates (5), (6) are provided along both left and right sides of the underframe (1). ) Is erected. A pair of square-shaped finch-Ube type heat exchangers (3)
Has its lower end fixed to the heat exchanger mounting member (2),
The upper end is fixed to the left and right side plates (5) and (6) so that the upper side is opened in a V shape. The blower (9) is arranged in the upper space of the heat exchanger (3), and the front side space (10) on the underframe (1) is divided by the pair of heat exchangers (3). A compressor (15), a control device (20), etc. are arranged and fixed, and an accumulator (19) is arranged and fixed in the space (11) on the back side. The structure of the refrigerant circuit is shown in FIG. 4 as in the conventional case.

In the outdoor unit (A) configured in this way, when the capacity of the accumulator (19) needs to be increased due to the lengthening of the refrigerant pipe (17) connecting to the indoor unit (B). , The height of the heat exchanger mounting member (2) and the left and right side plates (5), (6) are increased, and the position of the heat exchanger (3) is increased, as shown in FIG. The space under the heat exchanger (3) is enlarged to increase the size of the accumulator (19).

When the outdoor unit configured as above is operated, FIG. 2 (a)
As shown in (b) and (b), even if the capacity of the accumulator (19) is different, the relative relationship between the heat exchanger (3) and the blower (9) does not change at all, so the current flows to the heat exchanger (3). The distribution of air volume does not change and the utilization efficiency of the heat exchanger does not deteriorate. Further, since the size of the outdoor unit is only extended in the height direction, the floor area of the outdoor unit does not change and the installation area does not increase.

Since the accumulator (19) and the compressor (15) are separated by two heat exchangers (3) and the accumulator (19) is on the primary side of the intake air, the surface area of the accumulator is Even if it increases, it is possible to increase the adverse effects of radiant heat from the compressor (15) and waste heat on the secondary side of the heat exchanger.

When a large number of such outdoor units are installed, as shown in FIG. 3, the left and right side surfaces can be brought into close contact with each other for continuous centralized installation, and the front and rear surfaces of the outdoor unit have an air suction space and The installation space for outdoor units can be significantly reduced.

[Effect of device]

As described above, according to the present invention, the heat exchanger mounting member is mounted on the underframe, the left and right side plates are provided upright along the left and right sides of the underframe, and the pair of flat plate heat exchangers are installed at the lower end thereof. Is fixed to the heat exchanger mounting member, the upper end of the heat exchanger is fixed to the upper part of the outdoor unit so that the upper part has an open V shape, and the blower is installed in the upper space of the heat exchanger and one of the two lower spaces is installed. The compressor is placed on the other side and the accumulator is placed on the other side, and the accumulator height, heat exchanger mounting member height and left and right side plate heights are changed according to the accumulator capacity, and the heat exchanger and blower Since the relative positional relationship is kept unchanged,
When increasing the size of the accumulator, even if the same heat exchanger is used, the wind velocity distribution of the heat exchanger does not change due to the change in the relative positional relationship between the heat exchanger and the blower, so the utilization efficiency of the heat exchanger is changed. It is possible to cope with the problem without deteriorating the utilization efficiency of the heat exchanger.

Further, since the accumulator can be made larger by increasing the height of the outdoor unit, the floor area of the outdoor unit does not increase, and therefore the installation space of the outdoor unit does not increase.

Further, only by changing the heights of the heat exchanger mounting member and the left and right side plates, it is possible to minimize the cost increase without adding a new member.

Furthermore, since the accumulator and the compressor are separated from each other by the two heat exchangers and the accumulator is on the primary side of the intake air, even if the surface area of the accumulator increases, heat radiation from the compressor and heat exchange This has the effect of preventing the adverse effects of waste heat on the secondary side of the vessel from increasing.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part of an air conditioner according to an embodiment of the present invention, and FIGS. 2 (a) and 2 (b) are side sectional views of the same part.
FIG. 3 is a simplified plan view of a case where a large number of units are continuously installed in series, FIG. 4 is a refrigerant piping system diagram common to the present invention and a conventional air conditioner, and FIG. 5 is a conventional air conditioner. A perspective view of an essential part, FIGS. 6A to 6C are side sectional views of the essential part, and FIG. 7 is a simplified plan view when a large number of units are installed. In the figure, (1) is an underframe, (2) is a member for attaching a heat exchanger, (3) is a finch-ube type heat exchanger,
(5) and (6) are side plates, (9) is a blower, (15) is a compressor, and (19) is an accumulator. In each figure, the same reference numerals indicate the same or corresponding parts.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Michiaki Chiku 6-5-66, Tehira, Wakayama, Wakayama Sanryo Electric Co., Ltd. Wakayama Works (56) Reference JP 61-128074 (JP, A) Actually open 62-76837 (JP, U) Actually open 63-72420 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A left and right side plate that is erected along both left and right sides of an underframe to which a heat exchanger mounting member that extends in the left and right direction is attached, and each of the left and right side plates is provided along the heat exchanger mounting member. A pair of flat plate heat exchangers, each having a lower end attached thereto and formed in a V shape having an open upper side, and an upper end thereof fixed to the upper part of the outdoor unit, and arranged and fixed in a space above the heat exchangers. And a blower for supplying heat-exchanged air to the heat exchanger, the compressor is arranged in one space below the heat exchanger divided into front and rear by the heat exchanger, and the accumulator is arranged in the other space. According to the accumulator capacity, the accumulator height, the heat exchanger mounting member height, and the heights of the left and right side plates are changed so that the relative positional relationship between the heat exchanger and the blower does not change. The outdoor unit of the air conditioner .