JP2002081694A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently perform a radiating effect even by contacting a radiating plate of an electrical component of a heater with an air flow passing an electrical component box. SOLUTION: An outdoor unit 4 of an air conditioner comprises a compressor 1, an outdoor heat exchanger 2, a blower 3, and the electrical component box 6 housing the electrical component including a heating component. In this case, a suction side opening 5 and an exhaust side opening 7 are formed so as to generate a cooling air combined with the air flow passing the exchanger 2 from outside of the outdoor unit 4 through the box 6, and a protrusion 8 is provided at an upstream side of the air flow combined with the cooling air flow passing through the exchanger 2 near the opening 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for radiating electric components in an outdoor unit or a dehumidifier of a separate type air conditioner.

[0002]

2. Description of the Related Art In recent years, inverters have become the mainstream of outdoor units of air conditioners, and there has been a growing demand for promoting the heat radiation effect of heat-generating components such as transistors and capacitors as electric components. FIGS. 3 and 4 show the actual construction of the sixth embodiment.
It is a heat radiation structure for electric components in an outdoor unit of a conventional air conditioner disclosed in JP-A-59728. In the figure, 1 is a compressor, 2 is an outdoor heat exchanger, 3 is a blower, 6 is an electric component box containing electric components, and is an electric component box which enters from an intake side opening 5 provided on the outer shell of the outdoor unit 4. The outside air that has passed through the inside of the electric component box 6 is discharged from a gap formed in the upper part of the electric component box 6 on the side of the blower 3 and flows from the upper part of the heat sink 10 having comb-shaped fins toward the blower 3. At this time, the heat sink 10
The outside air is circulated by the air guide plate 12 provided above the heat sink 1.
The airflow is rectified so as to be in contact with zero.

[0003]

In the conventional configuration, the airflow passing through the interior of the electrical component is mainly the airflow hitting the radiator plate. In this case, the airflow passes through the heat exchanger and is blown out from the blower to the front. However, there is a problem that the heat dissipation effect is not sufficiently exhibited because the airflow having a high wind speed cannot be sufficiently utilized. In addition, since the comb-shaped fins are vertically arranged along the airflow that has passed through the electric component box 6, the airflow that passes through the outdoor heat exchanger 2 and flows horizontally in this portion is generated between the fins. I couldn't expect it to flow. In addition, although the ventilation opening of the conventional electric appliance box is provided with a door for preventing rainwater intrusion, it has a large opening, so small animals such as geckos that have entered the outdoor unit enter the interior and Could be short-circuited.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has as its object to efficiently radiate heat of electric appliances. Another object of the present invention is to solve the above-described problems, and an object of the present invention is to provide an opening structure that can prevent small animals from entering an electric appliance box.

[0005]

An air conditioner according to the present invention comprises: a compressor for generating a refrigerant flow in a refrigeration cycle;
A heat exchanger that acts as at least one of a condenser and an evaporator in the refrigeration cycle, a blower that generates an airflow passing through the heat exchanger, and an electrical component box that stores electrical components including heating components. In the air conditioner provided, in order to generate a cooling air flow that passes through the electrical component box from outside the air conditioner and merges with the air flow that has passed through the heat exchanger.
An intake-side opening and an exhaust-side opening are formed, and a convex portion is provided in the vicinity of the exhaust-side opening on an upstream side of an air flow that passes through the heat exchanger and joins a cooling air flow.

Further, a compressor for generating a refrigerant flow in the refrigeration cycle, a heat exchanger acting as at least one of a condenser and an evaporator in the refrigeration cycle, and an air flow passing through the heat exchanger are generated. In an air conditioner including a blower and an electric box containing electric parts including heat-generating components, in order to generate a cooling airflow that passes through the electric part box from outside the air conditioner to the blower, It is provided with a baffle plate that forms an intake side opening and an exhaust side opening, and seals the exhaust side opening with the blower.

Also, a compressor for generating a refrigerant flow in the refrigeration cycle, a heat exchanger acting as at least one of a condenser and an evaporator in the refrigeration cycle, and an air flow passing through the heat exchanger are generated. In an air conditioner including a blower and an electric component box containing electric components including heat-generating components, cooling that passes through the electric component box from outside the air conditioner and joins the airflow that has passed through the heat exchanger. Forming an intake-side opening and an exhaust-side opening to generate a use airflow;
The electric component box includes a radiator plate exposed to the blower side and radiating heat generated from the electric component, and a baffle plate provided near the radiator plate and guiding the combined airflow to the radiator plate. is there.

[0008] The heat radiating plate is formed with irregularities along the flow direction of the merged air flow.

Also, a compressor for generating a refrigerant flow in a refrigeration cycle, a heat exchanger acting as at least one of a condenser and an evaporator in the refrigeration cycle, and an air flow passing through the heat exchanger are generated. In an air conditioner including a blower and an electric box containing electric parts including heat-generating components, in order to generate a cooling airflow that passes through the electric part box from outside the air conditioner to the blower, Forming an intake-side opening and an exhaust-side opening, and forming the holes of the intake-side opening or the exhaust-side opening as a set of net-like or independent small holes to prevent invasion of small animals, and the opening area of each hole , While having a large opening area as a whole.

[0010]

Embodiments of the present invention will be described below. FIG. 1 is a plan sectional view showing an outdoor unit of a separate type air conditioner according to an embodiment of the present invention.
Is a longitudinal sectional view of the same. The outdoor unit is connected to an unillustrated indoor unit to form a refrigeration cycle. In the drawing, reference numeral 1 denotes a compressor that generates a refrigerant flow in a refrigeration cycle and is frequency-variably controlled by an inverter. Reference numeral 2 denotes a condenser during dehumidification / cooling operation in the refrigeration cycle (in this case, indoor heat exchange provided in the indoor unit). Is an outdoor heat exchanger that acts as an evaporator) and acts as an evaporator (the indoor heat exchanger acts as a condenser) during the heating operation.

A blower 3 generates an air flow that passes through the outdoor heat exchanger 2 and exchanges heat with the refrigerant. A blower 4 is an outdoor unit having the compressor 1, the outdoor heat exchanger 2, and the blower 3 built therein. 1, the outdoor heat exchanger 2 is arranged on the back and side surfaces, and the blower is arranged on the other side. Reference numeral 5 denotes an opening formed on a side surface of the outdoor unit 4 for introducing outside air, and reference numeral 6 denotes an electric component which is disposed above the compressor 1 of the outdoor unit 4 and stores electric components for controlling the compressor 1 and the blower 3. The box houses heat-generating components such as transistors and capacitors for inverter control.

Reference numeral 7 denotes an exhaust opening formed in the electric component box 6 on the side of the outdoor heat exchanger 2, and reference numeral 8 denotes a vicinity of the exhaust opening 7, which passes through the outdoor heat exchanger 2 after passing through this portion. A convex portion 9 protruding from the electric component box 6 serving as a portion located on the upstream side of the air flow is provided on the opposite side to the convex portion 8 with the exhaust opening 7 interposed therebetween, and seals the blower 3 side. This is an L-shaped air guide plate a.
Reference numeral 10 denotes a blower 3 from the side of the blower 3 of the electrical component box 6.
A radiator plate exposed to the side and provided with fins having irregularities in the flow direction of the air flow passing through the outdoor heat exchanger 2, which is in thermal contact with a transistor or a capacitor as a heat-generating component in the electric component box 6. I have. Reference numeral 11 denotes a baffle plate b provided in the vicinity of the heat radiating plate 10 and having a substantially U-shaped curved surface. The intake opening 5 and the exhaust opening 7 are constituted by a large number of round holes having a diameter of 10 mm or less.

In the outdoor unit configured as described above,
The airflow passing through the outdoor heat exchanger 2 and flowing along the outside of the electric component box 6 is formed by a convex portion 8 provided in front of the exhaust opening 7.
Is guided once to the direction away from the electrical component box 6. As a result, the cooling airflow flowing from the exhaust opening 7 to the outdoor heat exchanger 2 is smoothly discharged from the exhaust opening 7 without being obstructed by the airflow passing through the indoor heat exchanger 2. Then, both flows merge and are guided to the blower 3.

Further, by providing an L-shaped air guide plate a9 in which the blower 3 side is sealed in the vicinity of the exhaust opening 7, when rainwater or the like scatters from the blower 3 side, the exhaust opening section is provided. It is possible to prevent water droplets from entering the electric component box 6 from the inside. Furthermore, by disposing the convex portion 8 and the air guide plate a9 at symmetrical positions with the exhaust opening 7 interposed therebetween, the airflow passing through the outdoor heat exchanger 2 by the air guide plate a9 is reduced. Backflow into the inside can be prevented.

Further, the electric component box 6 coming out of the exhaust opening 7
The cooling air flow in the inside and the air flow passing through the outdoor heat exchanger 2 are combined, and the combined air flow flowing toward the blower 3 is directed toward the heat radiation plate 10 by the baffle plate b11. By flowing the air, the air flow passing over the heat radiating plate 10 is increased, and the heat radiating effect can be enhanced. In addition, since the merged air flow is caused to flow on the heat radiating plate 10, the fins formed on the heat radiating plate 10 need only be formed along the flow direction of the merged air flow, and the heat radiation effect can be enhanced.

Furthermore, since the intake opening 5 and the exhaust opening 7 are formed of a large number of round holes having a diameter of 10 mm or less, small animals such as geckos enter the electrical component box 6. It is difficult to do. The shapes of the intake opening 5 and the exhaust opening 7 are not limited to round holes, but may be mesh-like. Even if such a structure is used for the intake opening 5, a certain effect can be obtained. In the above embodiment, an outdoor unit of a separate type air conditioner separated into an indoor unit and an outdoor unit has been described, but the present embodiment is not limited to this, and a floor-mounted dehumidifier, The present invention is also applicable to a type of air conditioner and dehumidifier.

[0017]

Since the present invention is configured as described above, it has the following effects. A compressor that generates a refrigerant flow in the refrigeration cycle, a heat exchanger that acts as at least one of a condenser and an evaporator in the refrigeration cycle, a blower that generates an airflow passing through the heat exchanger, and a heat-generating component An air conditioner provided with an electrical component box containing electrical components including: a cooling airflow that passes through the electrical component box from outside the air conditioner and merges with the airflow that has passed through the heat exchanger. In order to form an intake opening and an exhaust opening, a convex portion is provided on the upstream side of the air flow that passes through the heat exchanger and merges with the cooling air flow in the vicinity of the exhaust opening. The flow of the cooling airflow that passes through the inside of the electrical component box can be smoothed, and the cooling effect can be enhanced.

Further, a compressor for generating a refrigerant flow in the refrigeration cycle, a heat exchanger acting as at least one of a condenser and an evaporator in the refrigeration cycle, and an air flow passing through the heat exchanger are generated. In an air conditioner including a blower and an electric box containing electric parts including heat-generating components, in order to generate a cooling airflow that passes through the electric part box from outside the air conditioner to the blower, An intake opening and an exhaust opening are formed, and a baffle plate is provided to seal the blower side of the exhaust opening, thereby preventing water droplets and the like scattered by the blower from entering the electrical component box. it can.

Also, a compressor for generating a refrigerant flow in the refrigeration cycle, a heat exchanger acting as at least one of a condenser and an evaporator in the refrigeration cycle, and an air flow passing through the heat exchanger. In an air conditioner including a blower and an electric component box containing electric components including heat-generating components, cooling that passes through the electric component box from outside the air conditioner and joins the airflow that has passed through the heat exchanger. Forming an intake-side opening and an exhaust-side opening to generate a use airflow;
Since a heat radiating plate that is exposed from the electric component box to the blower side and radiates heat generated from the electric component, and a baffle plate that is provided near the heat radiating plate and guides the combined airflow to the heat radiating plate are provided.
The heat radiation effect of the heat radiation plate can be enhanced.

Further, since the heat radiating plate is formed with irregularities in the flow direction of the merged air flow, the air flow can flow efficiently along the heat radiating plate, so that the heat radiating effect of the heat radiating plate can be enhanced. .

Also, a compressor for generating a refrigerant flow in the refrigeration cycle, a heat exchanger acting as at least one of a condenser and an evaporator in the refrigeration cycle, and an air flow passing through the heat exchanger. In an air conditioner including a blower and an electric box containing electric parts including heat-generating components, in order to generate a cooling airflow that passes through the electric part box from outside the air conditioner to the blower, Forming an intake-side opening and an exhaust-side opening, and forming the holes of the intake-side opening or the exhaust-side opening as a set of net-like or independent small holes to prevent invasion of small animals, and the opening area of each hole As a result, a large opening area is provided as a whole, and small animals such as geckos can be prevented from entering the inside of the electric component box from the outside.

[Brief description of the drawings]

FIG. 1 is a plan sectional view showing an outdoor unit of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing an outdoor unit of the air conditioner according to the embodiment of the present invention.

FIG. 3 is a perspective view showing an outdoor unit of a conventional air conditioner.

FIG. 4 is an enlarged perspective view showing a conventional outdoor unit of an air conditioner.

[Explanation of symbols]

1 compressor, 2 outdoor heat exchanger, 3 blower, 4
Outdoor unit, 5 opening for intake, 6 electric box, 7
Exhaust opening 8 Convex part, 9 Wind guide plate a, 10
Radiator plate, 11 baffle plate b, 12 conventional baffle plate.

Claims (5)

[Claims] 1. A compressor for generating a refrigerant flow in a refrigeration cycle, a heat exchanger acting as at least one of a condenser and an evaporator in the refrigeration cycle, and an air flow passing through the heat exchanger. In an air conditioner including a blower and an electric component box containing electric components including heat-generating components, cooling that passes through the electric component box from outside the air conditioner and joins the airflow that has passed through the heat exchanger. Forming an intake-side opening and an exhaust-side opening in order to generate a cooling airflow, and a convex portion on the upstream side of the airflow that passes through the heat exchanger and merges with the cooling airflow near the exhaust-side opening. An air conditioner comprising: 2. A compressor for generating a refrigerant flow in a refrigeration cycle, a heat exchanger acting as at least one of a condenser and an evaporator in the refrigeration cycle, and generating an airflow passing through the heat exchanger. In an air conditioner equipped with a blower and an electric component box containing electric components including heat-generating components, in order to generate a cooling airflow that passes from inside the electric component box to the blower from outside the air conditioner, An air conditioner comprising: an intake-side opening and an exhaust-side opening; and a baffle plate that seals the blower side of the exhaust-side opening. 3. A compressor for generating a refrigerant flow in the refrigeration cycle, a heat exchanger acting as at least one of a condenser and an evaporator in the refrigeration cycle, and generating an airflow passing through the heat exchanger. In an air conditioner including a blower and an electric component box containing electric components including heat-generating components, cooling that passes through the electric component box from outside the air conditioner and joins the airflow that has passed through the heat exchanger. In order to generate air flow for use, an intake side opening and an exhaust side opening are formed, and a radiator plate that is exposed to the blower side from the electric component box and radiates heat generated from the electric component, and in the vicinity of the radiator plate. And an air guide plate provided to guide the combined airflow to a radiator plate. 4. The air conditioner according to claim 3, wherein the heat radiating plate is formed with irregularities in a flow direction of the merged air flow. 5. A compressor for generating a refrigerant flow in a refrigeration cycle, a heat exchanger acting as at least one of a condenser and an evaporator in the refrigeration cycle, and generating an airflow passing through the heat exchanger. In an air conditioner equipped with a blower and an electric component box containing electric components including heat-generating components, in order to generate a cooling airflow that passes from inside the electric component box to the blower from outside the air conditioner, Forming an intake-side opening and an exhaust-side opening, and forming the holes of the intake-side opening or the exhaust-side opening as a set of net-like or independent small holes to prevent invasion of small animals, and the opening area of each hole An air conditioner characterized by having a large opening area as a whole while reducing the size.