JPH05141711A - Air-conditioner - Google Patents

Abstract

PURPOSE:To operate the above air-conditioner in a stable refrigeration cycle by controlling the discharge pressure of a compressor, by a method wherein blowoff air is intercepted or taken in by means of a partition plate. CONSTITUTION:A partition plate 2 is mounted on an outdoor machine 1 and is controllably opened-and-closed by driving a motor 5 for operating the partion plate, by both a thermistor 3 for detecting the temperature of sucked air and a control circuit 4. In this way, since the blowoff air discharged from a blowoff grille 7 is intercepted or taken in, the discharge pressure of a compressor can be controlled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover of an outdoor unit which enables stable cycle operation by controlling the discharge pressure of a compressor in an outdoor unit of a split type air conditioner by using blown air of the outdoor unit. Regarding the structure.

[0002]

2. Description of the Related Art In a conventional air conditioner, performance noise of a propeller fan is taken into consideration, but short circuit of blown air is not taken into consideration.
(Japanese Patent Laid-Open No. 62-26431)

[0003]

The above-mentioned prior art does not consider the short circuit to the outdoor unit air suction port side of the blowout air during the air conditioner cooling operation, and blows out a high temperature during a high summer when the outside temperature is high. There was a possibility that the discharge pressure of the compressor would rise due to the short circuit of air, and the high pressure shutoff device would operate.

An object of the present invention is to prevent the entrainment of blown air, and actively take in blown air to control the discharge pressure of the compressor when the outside temperature is low and the discharge pressure of the compressor is low and the cycle is unstable. And to realize stable cycle operation.

[0005]

In order to achieve the above object, the present invention provides an electric partition plate on the side surface of a unit,
The thermistor for detecting the intake air temperature is placed in the outdoor unit air intake port, and the partition plate is controlled to open and close according to the discharge pressure of the compressor by connecting to the control circuit that controls the motor for driving the partition plate at the intake air temperature ..

[0006]

Operation During the outdoor unit cooling operation, the air blown out from the outdoor unit blowout port tries to flow in from the unit side air intake port, but is blocked by the partition plate.
When the outside air temperature decreases and the intake air temperature decreases, the partition plate opening / closing control circuit including the temperature detection end located at the air intake operates the partition plate drive motor to close the partition plate and blow out air. Capture and raise the discharge pressure of the compressor to ensure stable cycle operation.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows an explanatory view of the present invention.

The partition plate 2 mounted on the outdoor unit 1 includes a mounting plate 2-1, an air blocking plate 2-2, and a drive arm 2-.
3, the hinge 2-4, the partition plate 2 detects the intake air temperature by the control circuit 4 including the intake air detection end 3, and the control circuit 4 operates the partition plate drive motor 5 to cause the partition plate 2 to operate. Control the opening and closing.

FIG. 2 shows the flow of blown air during the cooling operation according to this embodiment. The suction air 10 sucked from the air suction port 9 of the outdoor unit 1 is discharged as blown air 11 from the blowing grill 7 through the condenser 6 and the propeller fan 8. A part of the high temperature blown air 11 is shown in FIG.
As shown in (a), it tries to flow into the side of the outdoor unit 1, but since the partition plate 2 according to the present invention is arranged, there is no interruption and no short circuit, so the discharge pressure of the compressor is stable. Keep the state.

When the outside temperature decreases, the outdoor unit 1,
Although the air suction temperature is lowered, the temperature is detected by the suction air detection end 3 and the control circuit 4 arranged at the air suction port 9, and when the temperature becomes equal to or lower than the set temperature of the control circuit 4, as described in FIG. Closed.

The flow of the blown air 11 at this time is shown in FIG.
It shows in (b).

Since the partition plate 2 is opened by the suction air detection end 3 and the control circuit 4, the blown air 11 short-circuits and flows into the side air suction port 9. By positively taking in high-temperature air in this way, it becomes possible to increase the discharge pressure of the compression member, which decreases due to low outside air temperature, and to ensure stable cycle operation.

FIG. 3 is a circuit diagram of an embodiment of the present invention.
The control circuit 4 detects the intake air temperature by the temperature detection end 3 and the microprocessor 12, sends a signal to the driver 13, and the driver 13 transmits the signal to the forward rotation relay 14 according to the intake air temperature.
By operating the reverse rotation relay 15, the partition plate driving motor 5 is rotated normally or reversely to open and close the partition plate 2.

FIG. 4 is a diagram showing the partition plate operating mechanism of the present invention. When the partition plate drive motor 5 rotates normally, the drum 17 connected to the partition plate drive motor 5 rotates and the drive arm 2
The wire 18 connected to -3 is sent out, and the air blocking plate 2-2 of the partition plate 2 is opened.

When the partition plate drive motor 5 rotates in the reverse direction, the wire 18 is wound around the drum 17, the drive arm 2-3 is housed in the outdoor unit 1, and the air blocking plate 2-2 of the partition plate 2 is closed. Become.

When the partition plate 2 is opened and closed, the wire 18 is connected to the wire guide portion of the casing 16 and the arm guide 19.
Since it passes through the groove portion, the trajectory of the drive arm 2-3 can be secured. The drive arm 2-3 is ensured by the arm guide 19 for tracking.

[0018]

According to the present invention, the short circuit of the blown air is prevented when the outside temperature is high, and the blown air of the high temperature is positively taken in when the outside air is low to control the discharge pressure of the compressor. Stable cycle operation is possible.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a unit of the present invention.

FIG. 2 is an explanatory view showing the flow of blown air.

FIG. 3 is a circuit diagram of the present invention.

FIG. 4 is an explanatory view of a partition plate drive mechanism.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Outdoor unit, 2 ... Partition plate, 3 ... Suction air temperature detection thermistor, 4 ... Control board, 5 ... Partition plate drive motor, 7 ... Blow grill, 11 ... Blow air.

Claims (1)

[Claims] 1. An air conditioner characterized in that a cover forming an outer shell of an outdoor unit of a split type air conditioner is provided with an electric partition plate.