JP4079071B2 - Heat source unit - Google Patents

Description

  The present invention relates to a heat source unit used in a refrigeration cycle.

In a conventional outdoor unit of an air conditioner, as shown in FIG. 6, a power source box 1 that can be locked and fixed to the upper side of a heat exchanger 2 placed on a substrate serving as a bottom plate, and heat exchange And the top plate 8 that covers the upper part of the power supply box 1 and the top of the power supply box 1 can be abolished, and the power supply box can be fixed by eliminating the buffer material and screws, and the shock to the heat exchanger 2 and the power supply box 1 from the outside can be buffered. An invention that can be made is disclosed.
JP-A-11-83083 (FIG. 1 etc.)

  However, in the above-described conventional configuration, the electric box is fixed by the engaging portion 3 and the buffer member 9, but since this is not securely fixed to the heat exchanger, it is mounted by transportation vibration or external force. There was a possibility of damage to the mounting parts.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and aims to provide a heat source unit capable of absorbing damage to a power supply box to prevent breakage and preventing water and dust from entering electrical components. .

In order to solve the above-described conventional problems, a heat source unit of the present invention has a substantially rectangular casing, at least a top plate that can be attached to and detached from the top surface, a side plate that constitutes a side surface of the casing, and an electrical component A heat source unit having a power supply box that accommodates components, wherein a power supply box is provided as a space is provided between the side plate and the power supply box and covers at least a part of the electrical components on the lower surface side of the power supply box. DOO fitted with are disposed, comprises a metallic power supply box cover having a locking piece which is locked and fixed to the upper side of the side plate which faces extending therefrom obliquely upward, and the engagement The stop piece has no opening and separates the space on the power supply box side and the space on the side plate side .

  According to the present invention, it is possible to prevent damage by absorbing an impact on the power supply box and to prevent water and dust from entering the electrical component.

  In the present invention, a space is provided between a side plate that forms a side surface of a substantially rectangular housing and a power supply box that houses electrical components, and covers at least a part of the electrical components on the lower surface side of the power supply box. By having a metal power supply box cover having a locking piece that is fitted and arranged with the power supply box and that extends obliquely upward from this and is locked and fixed to the upper side of the opposing side plate, The impact on the heat source unit is not easily transmitted to the power supply box, and damage to the power supply box can be suppressed as much as possible.

  In addition, the power supply box has a metal power supply box cover that is disposed on the lower surface side of the power supply box and covers some of the electrical components, and is extended from the power supply box cover and fixed to the upper side of the side plate. And Thereby, a power supply box cover can be reliably latched and fixed to the upper part of a side plate, and stability improves. Further, by having a metal locking piece, an effect of further buffering the propagation of the impact on the side plate to the power supply box can be expected.

  Furthermore, since the locking piece that protects the lead wire through hole provided on the side of the power supply box is securely fixed to the upper part of the side plate, water and dust can be prevented from entering the power supply box. Can do.

  The invention described in claim 2 is characterized in that a space of a predetermined distance or more is provided between the position of the side plate to be locked and the power supply box. As a result, since there is a space between the side plate and the power supply box cover, it is possible to prevent water and dust from entering the electrical components in the power supply box, and between the position of the locked side plate and the power supply box. The distance of the space is preferably about 30 to 50 mm.

Furthermore, the locking piece extends obliquely upward from the lower side surface of the power box cover toward the upper side of the side plate in the space between the position of the side plate to be locked and the power supply box. .

  Further, the heat source unit of the present invention is characterized in that an insertion hole is provided on the upper surface of the locking piece that is combined with the upper surface of the side plate. This makes it possible to easily attach and remove screws and attach / detach the power supply box by providing a flange hole in the upper part of the side plate at the part that fits with the insertion hole on the upper surface of the locking piece and fixing it with screws. Features.

  Embodiments of the present invention will be described below with reference to the drawings.

  First, the configuration of the heat source unit will be described with reference to FIGS. In the figure, the heat source unit 10 is provided with a side plate 22 on the side of a rectangular casing, a heat exchanger 28, a compressor 27, etc. on a substrate 21, and further partitioned into a space between the heat exchanger 28 and the compressor 27. A plate 26 is disposed, the power supply box 24 is placed above the partition plate 26, and lead wire through holes 43 are disposed on the side surfaces of the power supply box 24.

  A metal power box cover 25 that is disposed on the lower surface side of the power box 24 and covers some of the electrical components extends from the power box cover 25 and is fixed to the upper side of the side plate 22. In addition, the locking piece 29 that protects the lead wire through hole disposed on the side surface of the power supply box is formed integrally with the power supply plate cover 25.

  An insertion hole 40 is provided on the upper surface of the locking piece 29 that is aligned with the upper surface of the side plate 22, a flange hole 41 is provided on the upper side of the side plate 22, and a screw hole 42 is used. Then, the locking piece 29 is fixed from above. A drawing shape having a depth corresponding to the thickness of the locking piece 29 is provided at a position approximately 1 to 5 mm wider than the locking width of the locking piece 29 at a position where it is combined with the locking piece 29 on the uppermost surface of the side plate 22 and further inserted. The screw 42 fitted to the hole 40 and the flange hole 41 prevents interference with the top plate 23 by lowering the height direction of the tightening position.

  In the above configuration, the power supply box 24 and the power supply box cover 25 are securely fixed by being locked to the side plate 22 and are placed and fixed above the partition plate 26 so that the power supply box cover 25 is positioned when the power supply box cover 25 is attached. It is easy to do, and stability is improved by taking the dimension of the locking width B long. Furthermore, since the lead wire through-holes 43 disposed on the side surfaces of the power supply box 24 are protected by the locking pieces 29, water and dust can be prevented from entering the power supply box 24.

  Further, since the space portion 50 having a spatial distance A of 30 mm to 50 mm is provided between the side plate 22 and the power supply box cover 25, it enters the power supply box 24 from the outside through the gap between the side plate 22 and the top plate 23. Water and dust can be prevented from entering.

  In addition, a flange hole 41 is provided on the upper portion of the side plate 22 at a position where the upper surface of the locking piece 29 is combined with the insertion hole 40 and is fixed by using a screw 42, whereby the screw 42 is attached or removed and the power supply box is attached or detached. Therefore, workability and serviceability can be improved.

  The power supply box cover 25 and the locking piece 29 for protecting the lead wire through hole 43 provided on the side surface of the power supply box 24 are integrated, but the power supply box cover 25 extends directly from the side plate. The power supply box cover 25 and the locking piece 29 may be separate parts and may be coupled using a plurality of fasteners without being locked and fixed to the upper side of 22.

Further, the locking piece 29 is inclined obliquely upward from the lower side surface of the metal power supply box cover 25 toward the upper side of the side plate 22 at a spatial distance A between the position of the side plate 22 to be locked and the power supply box 24. Therefore, in the case of intruding into the inside due to external ignition or the like, the structure directly contacts the locking portion of the locking piece 29 via the lower side of the locking piece 29, and the power supply box 24 or the power supply box The electrical components inside 24 are not touched.

  Further, since the substrate 21 is connected to the power supply box cover 25 via the side plate 22 and the locking piece 29 by metal, a screw hole 44 is provided on the side surface of the locking piece 29 or the power supply box cover 25, The ground wire 30 having a short lead wire length from the electrical component in the power supply box 24 to the screw hole 44 can be fastened and fixed, so that the cost can be reduced and the workability can be improved.

  The heat source unit of the present invention can be applied to devices such as an air conditioner and a heat source unit of a heat pump water heater that incorporate a power supply box equipped with electrical components on the top surface side.

(A) Schematic schematic diagram of a heat source unit according to an embodiment of the present invention (b) Side schematic diagram showing an engagement state of a locking piece The perspective structure schematic diagram of the heat-source unit by one Example of this invention Schematic diagram of assembly structure of power supply box and power supply box cover according to one embodiment of the present invention Front view of an outdoor unit of an air conditioner according to a conventional example

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Power supply box 2 Heat exchanger 8 Top plate 9 Claw 11 Side plate 21 Board 22 Side plate 23 Top plate 24 Power supply box 25 Power supply box cover 26 Partition plate 29 Locking piece 30 Ground wire 31 Electric wire 40 Insertion hole 41 Flange hole 43 Lead wire penetration Hole 50 Space A Space distance (from power supply box cover to side plate)
B Locking width

Claims (3)

A heat source unit having a substantially rectangular housing and having at least a top plate that can be attached to and detached from the top surface, a side plate that constitutes a side surface of the housing, and a power supply box that houses electrical components. A space portion is provided between the power supply box and the power supply box so as to cover at least a part of the electrical components on the lower surface side of the power supply box, and is fitted and disposed obliquely upward. A power supply box cover made of metal having a locking piece that is locked to and fixed to the upper side of the side plate that faces and is opposed , and the locking piece does not have an opening, and the space on the power supply box side and the side plate side A heat source unit characterized by isolating the space . 2. The heat source unit according to claim 1, wherein the power source box has a lead wire through hole for guiding a lead point taken out from the inside of the power source box on a side surface facing the locking piece. The power supply box cover and the side plate have conductivity, and a grounding stop portion is disposed on the power supply cover, and a ground wire led out from an electrical component is connected to the grounding stop portion. The described heat source unit.

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