JP4977354B2 - Electrical box - Google Patents

Abstract

Provided is an electric component box capable of receiving necessary electric components without increasing its size, and not impairing its service performance. In this electric component box 20 comprising a box body 21 to which the plurality of the electric components are fixed at its one face, and a cover body 22 closing an opening portion of the box body 21, and detachably fixed to the box body 21, a terminal assembly 38 comprising a plurality of terminals connected with wires, is mounted in the box body 21 through a mounting plate 32 for the terminal assembly, at a position separated fromthe face to which the electric components are fixed, and at least a part of a fuse 40 and a fuse holder 41 is disposed between the terminal assembly 38 and the face.

Description

  The present invention relates to an electrical equipment box that houses a plurality of electrical components. More specifically, the present invention relates to an electrical box incorporated in a heat exchange unit or the like used as an outdoor unit of a cooling system.

About the electrical equipment box incorporated in a heat exchange unit, it is disclosed by patent document 1, etc., for example. In general, the electrical component housed in the electrical box has to increase in volume as the output of the compressor increases.
JP-A-6-50574

  However, for example, in order to store a compressor or the like in a heat exchange unit or the like, the electrical box is generally limited in height and width and cannot be enlarged.

  Therefore, an object of the present invention is to provide an electrical box that accommodates necessary electrical components without increasing the size and does not impair serviceability.

For this reason, the present invention provides an electrical equipment comprising a box body to which a plurality of electrical components are fixed on one surface, and a lid body that closes the opening of the box body and is fixed to the box body so as to be attached and removable. In the box, a terminal plate having a plurality of terminals to which terminals of the plurality of electrical components are connected on a mounting plate provided in the box body so that a space is formed between the one surface and the box body. And at least a part of the electrical component having no mounting direction disposed on the one surface is positioned between the one surface and the mounting plate. The mounting plate and the electrical component having no mounting direction are viewed from the direction in which the electrical component does not overlap, and the mounting plate and at least a part of the electrical component having no mounting direction are disposed at a position where they overlap. and, taken the lid from the box body Characterized in a state that the terminals of the mounting undirected the electrical component and to be able to connect or or removal to the terminals of the terminal board.

  The present invention can provide an electrical box that accommodates necessary electrical components without increasing the size and does not impair serviceability.

  Next, an embodiment of the present invention will be described. FIG. 1 is a plan view of a condensing unit according to the present invention, and FIG. 2 is a front view thereof. The cooling system according to the present invention is used to cool a showcase room such as a refrigerated showcase or a refrigerated showcase to a predetermined temperature. It is used and comprises a condensing unit (heat exchange device) 1 and an evaporator (not shown) connected thereto.

  The condensing unit (heat exchange device) 1 may be configured with a casing having an outer appearance including a bottom plate, an upper plate, left and right side plates, and front and rear plates, but is configured only with a bottom plate. Then, on the unit base 2 which is the bottom plate, a rotary type or scroll type compressor 3, a condenser 4, three condenser heat dissipating blowers 7, a receiver 8, and a cooling system comprising a blower fan 5 and an electric motor 6. An electrical box 20 or the like for storing a plurality of various electrical components related to the control is disposed, and the refrigerant circuit from the condenser 4 to the service valve 11 on the outlet side described later and the compression from the service valve 12 on the inlet side described later are compressed. And a refrigerant circuit that reaches the machine 3.

  In the above-described configuration, when a predetermined amount of refrigerant is sealed in the refrigerant circuit of the cooling system and the service valves 11 and 12 are opened, the compressor 3 is operated and the compressor 3 is heated to a high temperature. A high-pressure gas refrigerant is discharged, and this gas refrigerant flows into the condenser 4 through the pipe. The inflowing gas refrigerant dissipates heat by the operation of the condenser heat dissipating blower 7, condenses and liquefies, and the liquid refrigerant that flows into the pipe is stored in the liquid receiver 8, gas-liquid separated, and only the liquid refrigerant is a dryer (not shown). And so on) to reach the service valve 11.

  The liquid refrigerant that has passed through the service valve 11 is decompressed by an expansion valve (not shown) and flows into the evaporator (not shown). The liquid refrigerant flowing into the evaporator evaporates there and absorbs heat from the surroundings, thereby cooling the inside of the showcase or the like.

  Next, the electrical box 20 will be described in detail with reference to FIGS. As shown in the exploded perspective view of the electrical box 20 in FIG. 3, the electrical box 20 is mainly composed of a box body 21 having a U-shaped cross section for fixing a plurality of various electrical components on the left side surface 26, and the box body. The cross-sectional shape for closing the right side surface opening 21 and the front and rear side surface openings 21 is constituted by a U-shaped lid body 22.

  That is, the mounting piece 24 is bent so as to be opposed to the right end of the upper and lower walls 23 of the box body 21, and the mounting hole 25 opened in the center of each mounting piece 24 and the right side 27 of the lid body 22 on the upper and lower portions. By screwing a screw (not shown) into the established mounting hole 28 from the right side of the condensation unit 1, the lid 22 can be fixed to the box body 21 and the electrical box 20 can be assembled.

As shown in FIG. 4 which is a right side view of the box body 21 and FIG. 5 which is a rear view, a plurality of various electrical components are fixed to the box body 21 mainly on the left side face 26, A terminal plate mounting plate 32 having an L-shaped cross section so that the fixing piece 30 is fixed to an intermediate portion slightly to the right of the wall 23 and the mounting piece 31 hangs down with a space between the left side surface 26. Is provided.

  6 and 7, on the left side surface 26 of the box body 21, the operating capacitors 34 and 35 of the electric motor 6 of the condenser heat dissipating blower 7 are provided at the lower part, and the fuses are provided at the rear part at the intermediate part. 36 and a relay 37 are fixed to the front, and a terminal plate 38 which is a terminal block having a plurality of terminals is fixed on the upper mounting plate 32 so that the connected wiring is drawn out in the forward and backward directions. Is done. In this terminal plate 38, the terminals arranged in parallel in the vertical direction are arranged in two rows in the front and back, and the connection with the wiring is made from the front direction through the front opening of the box body 21 to the terminals in the front row, It is connected to each terminal in the rear row from the rear direction through the rear opening of the box body 21.

The relay 39 is fixed on the left side surface 26 so that the front half of the mounting plate 32 (terminal plate 38) is applied to the back of the mounting plate 32 (terminal plate 38). The mounting plate 32 and the relay 39 are viewed from the right side of the mounting plate 32 where the mounting plate 32 and the relay 39 overlap so as to be positioned between the left side surface 26 and the mounting plate 32. The relay 39 is fixed on the left side surface 26 at a position where the plate 32 and the substantially front half of the relay 39 overlap in the front-rear direction. Further , the fuse 40 which is the electrical component having no mounting direction and the fuse holder 41 holding the fuse 40 are disposed obliquely and fixed on the left side surface 26 so that at least a part of the upper half is applied. That is, the mounting plate 32 and the fuse holder 41 overlap so that the fuse 40 and the upper half of the fuse holder 41 holding the fuse 40 are located between the left side surface 26 and the mounting plate 32. When the mounting plate 32 and the fuse holder 41 are viewed from the right side of the mounting plate 32, the fuse holder 41 is disposed obliquely at a position where the mounting plate 32 and the upper half of the fuse holder 41 overlap each other. And fixed on the left side surface 26. That is, in order not to impair serviceability, the fuse 40, which is an electrical component with a high replacement frequency, is arranged near the opening on the rear surface of the box body 21 so that the user can easily replace it, and the size of the electrical box 10 is increased. In order to make effective use of the space without slanting, it is disposed obliquely, that is, the lower portion thereof is inclined obliquely outward about 45 degrees.

Then, the various electrical components as described above are arranged in the box body 21 and various wiring processes are performed. That is, each electrical component is directly connected to the terminal of the terminal plate 38 via wiring, or is connected to the terminal of the terminal plate 38 after passing through other electrical components. For example, the fuse holder 41 that holds the fuse 40 is connected to the terminal of the terminal plate 38 via a wiring, or connected to another relay via a wiring and then connected from the relay to the terminal of the terminal plate 38 via the wiring. To do.

  Further, a wiring connected to an external power source is connected to a terminal of the terminal plate 38 through an opening 43 formed in the upper part of the left side surface 26, or a compression provided in the condensing unit (heat exchange device) 1. The wiring connected to the motor 3 and the electric motor 6 of the condenser heat-dissipating blower 7 is connected to the terminal of the terminal plate 38 through the opening 44 formed in the lower part of the left side surface 26.

  As described above, a plurality of wirings are connected to the terminals of the terminal plate 38 through the terminals. Particularly, since the front and rear openings are opened in the box body 21, wiring is performed with respect to the terminals of the terminal plate 38. Since the fuse holder 41 holding the fuse 40 is inclined at an angle of about 45 degrees toward the outside, the fuse holder 41 holding the fuse 40 can be easily connected or disconnected from the front and rear directions. The wiring connected to 41 can be easily pulled out from the rear lower direction of the rear opening of the box body 21 or connected in reverse.

  After connecting most of the wirings as described above, the box body 21 in a state where these electrical components are arranged on the unit base 4 is fixed, and then other necessary wirings are connected to the terminals of the terminal plate 38. The lid 22 is fixed to the box body 21.

  Since it was set as the above structures, an operator can see various electrical components in the front by moving to the right side surface of the condensation unit 1, and removing the cover body 22 from the box main body 21. FIG. When the condensation unit 1 has a right side wall, all or a part of the right side wall is removed from the condensation unit 1, and similarly, the lid 22 is removed from the box body 21, so that various electrical components can be mounted on the front side. Can be seen. Accordingly, by removing the lid 22 from the box body 21 and inserting a hand or a tool into the box body 21, it is possible to easily operate, check, set, or replace various electrical components.

  That is, when the lid 22 is removed from the box body 21 and, for example, the fuse 40 is replaced, the fuse 40 is removed from the fuse holder 41 through the rear opening of the box body 21 and the new fuse 40 is replaced with a fuse. Attach to holder 41. Thereafter, the lid 22 is attached to the box body 21.

  Although the embodiments of the present invention have been described above, various alternatives, modifications, and variations can be made by those skilled in the art based on the above description, and the present invention is not limited to the various alternatives described above without departing from the spirit of the present invention. It includes modifications or variations.

It is a top view of a condensation unit. It is a front view of a condensation unit. It is a disassembled perspective view of an electrical equipment box. It is a right view of the box main body before attaching an electrical component. It is a rear view of the box main body before attaching an electrical component. It is a right view of the box main body after attaching an electrical component. It is a rear view of the box main body after attaching an electrical component.

Explanation of symbols

20 Electrical box 21 Box body 22 Lid 32 Terminal plate mounting plate 38 Terminal plate 40 Fuse 41 Fuse holder

Claims (1)

In the electrical box comprising: a box body to which a plurality of electrical components are fixed on one side; and a lid that closes an opening of the box body and is fixed to the box body so as to be attachable and detachable. A terminal plate having a plurality of terminals connected to each terminal of the plurality of electrical components on a mounting plate provided in the box body so that a space is formed between the terminal body and the box body. The mounting plate and the electrical component having no mounting direction are arranged such that at least a part of the electrical component having no mounting direction disposed on the one surface is located between the one surface and the mounting plate. The mounting plate and the electrical component having no mounting direction are viewed from the overlapping direction, and the mounting plate and at least a part of the electrical component having no mounting direction are disposed at a position overlapping the box body. With the lid removed, the removal Only electrical equipment box, characterized in that the electrical components of the terminal with no directivity was to be able to connect or or removal to the terminals of the terminal board.

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