CN201025394Y

CN201025394Y - Power box and air-conditioner for air-conditioner

Info

Publication number: CN201025394Y
Application number: CNU200720002147XU
Authority: CN
Inventors: 波多野弘司; 神崎秀幸; 山田吉人
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2006-01-27
Filing date: 2007-01-26
Publication date: 2008-02-20
Anticipated expiration: 2017-01-26
Also published as: JP4715531B2; JP2007198684A

Abstract

The utility model provides a power supply box for air conditioner. The utility model comprises a diode bridge (1) of a commutating AC power supply, an electrolytic capacitor (2) for smoothing, a power supply module (3) for driving a compressor, a heat dissipation plate (5) which radiates the heat of the power supply module and the diode bridge, a printed plug board (4) with the above components, and a power supply box body (6). Wherein, the air conditioner uses the power supply box and a fan (10) to form a ventilation loop (8) to ventilate an outdoor heat exchanger. The heat dissipation plate is exposed from the lateral side of the ventilation loop and provides an interval in which an external air sucking inlet (7) can be formed by one end surface of the printed plug board and the power supply box body. An air exhaust outlet (9) is arranged on the lateral side of the ventilation loop which is opposite to the interval.

Description

Use in refrigeration system power supply box and air conditioner

Technical field

The utility model relates to the electric component of air conditioner, relates in particular to realize the effectively outdoor use power supply box of cooling.

Background technology

In the off-premises station of existing air conditioner, electrolytic capacitor is arranged on the AC lead with near the through hole, by with the AC lead shared with through hole be air drawn mouth in power supply box, promote the cooling in the power supply box, and, by electrolytic capacitor being arranged on the AC lead, utilize outer gas directly to cool off electrolytic capacitor with near the through hole.This technology contents has disclosed in Japanese Patent Application Laid-Open 2003-106560 communique.In Fig. 6, express the power supply box of this existing air conditioner.

In Fig. 6, electrolytic capacitor 101 is disposed at the AC lead with near the through hole 103 in power box 102, the AC lead with through hole 103 by shared for from ambient atmosphere, air being drawn into the interior suction hole of power box 102.

In said structure, if fan (not shown) rotation then uses through hole 103 to distinguished and admirable 105 of steam vent 104 power box 102 inner generations from the AC lead.At this moment, because electrolytic capacitor 101 is at distinguished and admirable 105 upstream side, so electrolytic capacitor 101 is directly cooled off by ambient atmosphere institute.

But in above-mentioned existing technology, there are the following problems.That is, in most of the cases, heater maximum in the electric component is power module 107 and diode bridge 106, is used for heat sink 108 that these heatings are dispelled the heat, is dispelled the heat by the air-flow after emitting from steam vent 104.So, because radiating effect and insufficient in order to reduce caloric value, is necessary to make the electric capacity of power module 107 and diode bridge 106 to become shape big or increase heat sink 108.Therefore, it is big that the shape of power supply box becomes, and becomes expensive product aspect cost, therefore, needs the cooling effectiveness of power module and diode bridge better.

In addition, configuration aspects at the off-premises station of air conditioner, under the situation that the power supply box that comprises printing distributing board vertically is installed, rainwater etc. might enter electric component from the peristome that is used to that heat sink is exposed and blows circuit side, and this just needs rainproof waterproof or can be with the water security ground discharge that is entered.

The utility model content

Use in refrigeration system power supply box of the present utility model has following structure.It comprises: the diode bridge of rectification AC power supplies; Make this diode bridge output smoothing, obtain the electrolytic capacitor of dc voltage; Utilize the power module of dc voltage drive compression machine; The heat sink of the heating of heat radiation power module and diode bridge; Set the distributing board of diode bridge, electrolytic capacitor and power module; And the power box of taking in this printing distributing board.Herein, this use in refrigeration system power supply box constitutes, comprise the ventilation circuit that utilizes fan that outdoor heat exchanger is ventilated, wherein, heat sink exposes from the ventilation circuit side, and have end face of printing distributing board and the interval that power box forms outer aspiration inlet, on the face of the ventilation circuit side relative, have exhaust outlet with this interval.Moreover the utility model comprises the air conditioner that is equipped with this use in refrigeration system power supply box.

Utilize this structure, because when fan rotates, exhaust side becomes negative pressure, directly outer gas is drawn in the power supply box from air entry, become and utilize diode bridge or power module, the effective cooling system of the direct cooling of this outer gas, can realize small-sized and cheap use in refrigeration system power supply box and air conditioner as main heating element.

Description of drawings

Fig. 1 is the vertical disconnected side view of the related use in refrigeration system power supply box of embodiment of the present utility model.

Fig. 2 is the major part stereogram of the related use in refrigeration system power supply box of embodiment of the present utility model.

Fig. 3 is the major part stereogram of the related use in refrigeration system power supply box of embodiment of the present utility model.

Fig. 4 is the major part stereogram of the related use in refrigeration system power supply box of embodiment of the present utility model.

Fig. 5 is the exploded perspective view of the related air conditioner of embodiment of the present utility model.

Fig. 6 is the major part stereogram of existing air conditioner.

The specific embodiment

Below, with reference to accompanying drawing, embodiment of the present utility model is described.

Fig. 1 is the vertical disconnected side view of the related use in refrigeration system power supply box of embodiment of the present utility model.Fig. 2 is the major part stereogram of the related use in refrigeration system power supply box of embodiment of the present utility model.

In Fig. 1 and Fig. 2, in power box 6, be equipped with: the diode bridge 1 of rectification AC power supplies; Make the level and smooth electrolytic capacitor 2 of electric current after the rectification; Utilization is the dc voltage after level and smooth by electrolytic capacitor 2, the power module 3 of drive compression machine; The distributing board 4 of diode bridge 1, electrolytic capacitor 2 and power module 3 is installed; And be installed on heat radiation power module 3 and the diode bridge 1 heat sink 5 that the heating of these parts is dispelled the heat.Like this, heat sink 5 is configured to expose from ventilation circuit 8 sides of power box 6.

Here, end face in four end faces of printing distributing board 4 and power box 6 devices spaced apart are installed, formed outer aspiration inlet 7.Other three end faces do not have at interval with the corresponding part of power box 6 and engage.And, have exhaust outlet 9 on the face of 7 relative ventilation circuit 8 sides entering the mouth with outer aspiration.

In this structure, if fan 10 rotation, then the upstream side 11 of fan 10 becomes negative pressure, thereby produces the air-flow 12 that arrives exhaust outlet 9 from outer aspiration inlet 7 via the space between printing distributing board 4 and the power box 6.At this moment, be provided in diode bridge 1 and power module 3 in the space of printing distributing board 4 and power box 6, utilize outer gas and be directly cooled.Though heat sink 5 is installed on diode bridge 1 and the power module 3, but heat sink 5 exposes from ventilation circuit 8, the air that flows through ventilation circuit 8 obtains the heat of automatic heat-exchanger by behind the heat exchanger 19 (Fig. 5), becomes the temperature higher than ambient atmosphere.

So, in this structure, directly contacting diode bridge 1 and power module 3 by making atmosphere, can more effectively cool off, suppress the electric capacity of diode bridge 1 and power module 3, can realize that cost reduces and the raising of part reliability.

In Fig. 1 and Fig. 3, three limits by prolonging exhaust outlet 9 and on the face relative, wall is set with exhaust outlet 9, and formation hexahedron 13, the face of the exhaust outlet 9 by constituting open this hexahedron 13 and with other a face 14 of the face adjacency of exhaust outlet 9, form the covering of exhaust outlet 9.Thus, can reduce from exhaust outlet 9 entering the rainwater that electric component is taken in side, thereby can avoid the harmful effect that short circuit caused of the electric loop that causes because of entering of rainwater.

In Fig. 1, Fig. 3 and Fig. 4, when being accommodated in heat sink 5 in the power box 6, on the two sides of the peristome 15 that is provided with for heat sink 5 is exposed from ventilation circuit 8 sides, be provided be arranged on heat sink 5 on one group of first rib 17 paralleling of fin 16.Thus, can be from the boundary line that line covers the peristome that is provided with for the heat sink 5 that makes power box 6 exposes 15 and heat sink 5 of injecting of rainwater, can reduce rainwater and enter electric component and take in side, can avoid the harmful effect that short circuit caused of the electric loop that causes because of entering of rainwater.

In addition, when being accommodated in heat sink 5 in the power box 6, the face that electric component below the peristome 15 that is provided with for heat sink 5 is exposed from ventilation circuit 8 sides, power box 6 is taken in side is equipped with two second ribs 18.Like this, the width dimensions of interval ratio open portion 15 that these two second ribs 18 is set to its top is big, and it is more little at interval more downwards.Thus, the rainwater in that the boundary line from the peristome that is provided with for the heat sink 5 that makes power box 6 exposes 15 and heat sink 5 enters when flowing downwards, is stopped between two second ribs 18, rainwater can be guided to suitable position.

Fig. 5 is the exploded perspective view of the related air conditioner of embodiment of the present utility model.This off-premises station has fan 10 on top, heat exchanger 19 is ventilated.The power box 6 that will comprise printing distributing board 4 is installed in vertical direction.

As mentioned above, the power supply box of the use in refrigeration system that the utility model relates to and air conditioner can carry out the cooling of power module 3 and diode bridge 1 effectively, configuration aspects at the off-premises station of air conditioner, to comprise under the power box installation situation in vertical direction of printing distributing board 4, prevent that rainwater etc. from entering electric component incorporating section side from making heat sink 5 expose the peristome of using in air-supply loop 8 sides 15, because can carry out rainproof waterproof in other words, the water security ground that enters can be discharged, so be not only applicable to air conditioner, can be applicable to the freeze cycle applied for machines yet, be dehumidifier or drying machine etc.

Claims

1. a use in refrigeration system power supply box is characterized in that, comprising:

The diode bridge of rectification AC power supplies; Make described diode bridge output smoothing, obtain the electrolytic capacitor of dc voltage; Utilize the power module of described dc voltage, drive compression machine; The heat sink that the heating of described power module and described diode bridge is dispelled the heat; Set the printing distributing board of described diode bridge, described electrolytic capacitor and described power module; And the power box of taking in described printing distributing board, wherein, comprise the ventilation circuit that utilizes fan that outdoor heat exchanger is ventilated, described heat sink exposes from described ventilation circuit side, and have an end face of described printing distributing board and the interval that described power box forms outer aspiration inlet, on the face of the described ventilation circuit side relative, have exhaust outlet with described interval.

2. use in refrigeration system power supply box according to claim 1 is characterized in that:

The other end of described printing distributing board is set to contacting with described power box.

3. use in refrigeration system power supply box according to claim 1 is characterized in that:

Three limits by prolonging described exhaust outlet and on the face relative, wall is set, and form hexahedron with described exhaust outlet, the face of open described exhaust outlet and with another face of the face adjacency of described exhaust outlet.

4. use in refrigeration system power supply box according to claim 1 is characterized in that:

Described heat sink has fin, and described power box has the first rib parallel with described fin.

5. use in refrigeration system power supply box according to claim 1 is characterized in that:

Described power box has two second ribs below the described heat sink of the face opposite with described ventilation circuit side, it is more little at interval more downwards for described two second ribs.

6. air conditioner is characterized in that:

Be equipped with each described use in refrigeration system power supply box in the claim 1～5.