JPS6017645Y2 - Air conditioner outdoor unit - Google Patents

Description

[Detailed description of the invention] This proposal relates to the structure of the outdoor unit in a separate air conditioner, and is an improvement that aims to make the unit thinner and allows it to operate without problems even if it is installed against the wall of a house. It provides structure.

First, the structure of the present invention before improvement will be explained based on FIGS. 1 and 2.

Figure 1 is a rear perspective view of the outdoor unit, and Figure 2 is a sectional view taken along line n-n' in Figure 1, showing the minimum depth that can house the compressor 1, gas-liquid separator 2, and liquid receiver 3. It has a thin structure in which the depth dimension of the entire outdoor unit is determined by the depth dimension of the machine room 4, which is kept to a certain size.

Reference numeral 5 denotes a fan casing extending laterally from approximately the center of the machine room 4. An axial fan 7 facing the nozzle 6 of the casing forms a windward side chamber 8 and a leeward side chamber 9. 8 is provided with a heat exchanger 10 in close proximity to the axial fan 7, and the leeward side chamber 9 is provided with a drive motor 12 for the axial fan 7 fixed to the fan casing 5 via legs 11. There is.

Therefore, the leeward side chamber 9 has exhaust ports 15 and 16 on at least two of the three sides, the right side and the top side, excluding the left side wall 13 and the bottom wall 14, and further has an exhaust port 17 on the back side. is forming.

The exhaust ports 15, 16, and 17 are covered with protective members of various shapes, such as a wire guard 18 or a large number of sheet metal punched holes, to protect the axial fan 7 and the drive motor 12.

In this way, the outdoor unit of the air conditioner of the present invention partitions the inside of the unit into the machine room 4 and the ventilation room with the partition plate including the left side wall 13, and stores the compressor 1 in the machine room 4.
The ventilation chamber is divided into a windward side chamber 8 and a leeward side chamber 9 by a fan casing 5 that intersects with the partition plate, and a fan 7 is installed in the windward side chamber 8.
The heat exchanger 10 is disposed in close proximity to the fan 7, and exhaust ports 15 and 16 are formed in the side wall surface of the leeward side chamber 9, which is located parallel to the axis of the fan 7.

Therefore, when the outdoor unit is installed and operated away from the house wall 19, the axial fan 7 drives the outside air to be sucked in from the front heat exchanger 10 side as shown by the arrow in FIG. 6 to each exhaust port 15, 16, 17.
is discharged from.

During this operation, the left side wall 13 is tilted backward and the exhaust port 16 is
．． 17 area is expanded and also serves as a guide wall for the exhaust flow, resulting in an increase in air volume and efficient heat exchange.

Unlike such an installation state, the installation area cannot be secured, and even if the outdoor unit is installed pressed against the house wall 19 as shown by the dashed line in FIG. 2, it can be operated without any problem.

Of course, since the exhaust port 17 on the back side is blocked by the house wall 19, the amount of outside air will inevitably decrease. It acts as a guide wall for the airflow, and as mentioned above, the airflow characteristics of the axial fan 7 are combined, and the direction of the exhaust air is diverted and discharged toward the exhaust ports 15 and 16 on the right side and the upper side, so the measurement is possible. As a result, it was proved that the outside air flow rate was reduced by only about 10% compared to the above-mentioned example.
It was found that there was virtually no problem with heat exchange cooling operation.

Figure 3 is a rear perspective view of the outdoor unit that spans both the windward and leeward chambers 8°9 of the machine room 4a and shows another structure before this improvement, which was installed in parallel below the machine room 4a; An exhaust port 20 is also provided on the surface, and a horizontal compressor 1a, a gas-liquid separator 2a, and a liquid receiver 3a are housed in the machine room 4, and the depth of the outdoor unit is the same as that of Fig. 1. It becomes.

The vertical structure requires less installation space and has two exhaust ports.
There is an advantage in that even if the exhaust port 17 on the back side is pressed against the wall surface 19 of the house by adding 0, a sufficient amount of outside air can be secured.

Note that the same parts as in FIGS. 1 and 2 are denoted by the same reference numerals.

In this way, the structure before this improvement can secure a sufficient amount of outside air even if the rear exhaust port 17 is pressed against the house wall 19 while achieving a thin shape with a short depth dimension. However, the capacity of the heat exchanger 10 and If this structure is applied as it is to a large capacity outdoor unit in which the diameter of the fan 7 is doubled, for example, there is a problem that the width of the unit becomes longer and the installation area of the unit becomes larger.

The present invention has been developed focusing on this problem, and embodiments of the present invention will be described based on FIGS. 4 to 6.

FIG. 4 is a rear perspective view of the outdoor unit, FIG. 5 is a sectional view taken along line V-V' in FIG. 4, FIG. 6 is a sectional view taken along line VI-VI' in FIG. The compressor 1b and heat exchanger 10a have twice the capacity compared to the heat exchanger 10a.
The fan casing 5a is extended upward to add an axial flow fan 7a and a nozzle 6a, and a machine room 4b is arranged downward in parallel across both the windward and leeward chambers 8ay9a, and the compressor 1b is installed in this machine room. Gas-liquid separator 2
b. The liquid receiver 3b is housed in an upper auxiliary machine room 4c that communicates with the machine room 4b.

Furthermore, the top wall 2 of the machine room 4b is installed so that a sufficient amount of outside air can be obtained even if the exhaust port 17a on the rear side is blocked by the house wall 19.
1 is tilted downward toward the axial fan 7b and the nozzle 6b, and a ventilation passage 23 is formed surrounded by the ceiling wall 21, the back panel 22, and the fan casing 5a, and an exhaust port 20a is provided on the left side of the top wall 21. The exhaust port 16a is inclined downward.

Therefore, it goes without saying that if the outdoor unit is installed with the house wall 19 and the back of the unit separated, each exhaust port 15a, 1
6a, 17a, and 20a, all are discharged from the house wall 19.
Even if the back of the unit is pressed against the exhaust port 17a to block the exhaust port 17a, the airflow from the axial fan 7b will still flow through the exhaust port 15 on the right side.
The airflow is discharged from the exhaust port 20a on the left side along the ceiling wall 21, and the airflow discharged from the axial fan 7a is discharged through the exhaust ports 15a and 20a on both sides and part of the exhaust port 1 on the top side.
It was verified through measurements that the outside air flow rate remained within 10% compared to the state in which the air was discharged from the air outlet 6a and the exhaust port 17a was not blocked.

Moreover, the machine room 4b is designed to have the minimum size to accommodate the compressor 1b, and the refrigeration accessory parts, the gas-liquid separator 2b and the liquid receiver 3b, are housed in the upper auxiliary machine room 4c. The depth of the outdoor unit can be the same thin dimension as in FIGS. 1 and 3.

Also, the height of the heat exchanger 10a is set to 2 of the heat exchanger 10 in FIG.
A fan with the same diameter as fan 7 while doubling it? a and 7b, the width of the outdoor unit can be the same as that in FIG. 1.

As described above, the outdoor unit of this invention includes a partition plate that divides the inside of the unit into a machine room and a ventilation room, a fan casing that intersects with this partition plate and divides the ventilation room into a windward side room and a leeward side room, and a plurality of fan drive motors arranged vertically in parallel in the leeward side chamber; a heat exchanger arranged close to the fan in the windward side chamber; A compressor is housed in the machine room, and an auxiliary machine room is formed above the machine room and adjacent to the windward side room, and refrigeration accessories are stored in this auxiliary machine room. A ventilation passage communicating with the leeward side chamber is formed, and air blown by the fan is discharged from this ventilation passage and exhaust ports formed on the back, top, and side surfaces of the leeward side chamber.
The compressor and refrigeration accessories can be arranged vertically to create a thin structure, and the heat exchanger can be made vertically and the fans can be installed vertically in parallel, resulting in a slim structure with a small width. A large-capacity outdoor unit with a small area can be obtained.

Furthermore, multiple fans are placed close to the heat exchanger to the extent that outside air can be sucked in from the entire surface of the heat exchanger, and the exhaust flow discharged from the fans is changed diagonally from the center of the unit to the side, and is connected to the leeward side chamber. The amount of air discharged is ensured through the ventilation path and the exhaust ports on the top and side surfaces of the leeward side chamber, so even if the exhaust port on the back side is blocked, operation will not be affected. It is also possible to install the outdoor unit with the back pressed against the wall of the house.
This is an extremely useful device that allows you to freely select the installation location.

[Brief explanation of drawings]

Fig. 1 is a rear perspective view of the outdoor unit showing an example before the improvement, Fig. 2 is a cross-sectional view taken along line n-n' in Fig. 1, and Fig. 3 is a rear perspective view of the outdoor unit showing another example before the improvement. 4 is a rear perspective view of an outdoor unit showing an embodiment of the present invention; FIG. 5 is a sectional view taken along line V-V' in FIG. 4; and FIG. 6 is a sectional view taken along line VI-VI' in FIG. 4. It is a diagram. 1, 1 a, 1 b...Compressor, 4,4
a, 4b=... Machine room, 5, 5a... Ventilation guide casing, 7t 7at 7b...
Axial fan, 8, 8a... Windward side chamber, 9, 9a
...Left side chamber, 10.10a... Heat exchanger, 12... Drive motor, 15, 15a, 1
6t 16a...Exhaust port.

Claims (1)

[Scope of utility model registration request] A partition plate that divides the inside of the unit into a mechanical and ventilation chamber, a fan casing that intersects with this partition plate and divides the ventilation chamber into a windward side chamber and a leeward side chamber, and a fan casing installed vertically in parallel in this leeward side chamber. a plurality of fan drive motors; a heat exchanger disposed in the windward side chamber in close proximity to the fan; and a compressor housed in the machine room spanning both the windward and leeward chambers. An auxiliary machine room is formed above the machine room and adjacent to the windward side room, and the refrigeration accessories are stored in this auxiliary machine room, and a ventilation passage communicating with the leeward side room is provided above the machine room. An outdoor unit of an air conditioner characterized in that air blown by a fan is discharged from the ventilation passage and exhaust ports formed on the back, top, and sides of the leeward side room.