JP5586564B2 - Air conditioner outdoor unit - Google Patents

Description

  The present invention relates to an outdoor unit of an air conditioner.

  Generally, an outdoor unit of an air conditioner is provided with a refrigerant pump down and refrigerant charging valve (hereinafter referred to as “packed valve”), and the packed valve is exposed to the outside below the side of the outdoor unit body. Has been placed. A valve cover is attached to the packed valve.

  By the way, the packed valve tends to be low in temperature because the refrigerant passes during the cooling operation of the air conditioner. For this reason, moisture in the air tends to condense on the surface of the packed valve due to a temperature drop, and the condensed water drops from the packed valve into the valve cover. Therefore, conventionally, a gutter is provided integrally below the inside of the valve cover. One end of the rod is joined to the inner wall of the valve cover, and the other end, that is, the drain port, is inserted into a dedicated opening opened on the side surface of the outdoor unit body (hereinafter referred to as a side panel). So as to extend to a predetermined length. The trough has a groove shape with a substantially U-shaped cross section, and is inclined downward along the packed valve from the junction with the inner wall of the valve cover to the drain port. In addition, the scissors are integrally formed with a water catching face plate that extends radially outward on both sides thereof and that inclines upward and inclines upward, thereby generating in the valve cover that covers the packed valve. Condensed water or the like can be smoothly guided to the eaves and drained through the outdoor unit main body (see, for example, Patent Document 1).

  In addition, the cover that covers the work opening formed on the side panel of the outdoor unit body of the air conditioner is composed of a resin lid and a metal lid placed on the back side of the cover. In addition to preventing the spread of fire, these caps are provided with locking claws, and these locking claws are engaged with engagement holes formed in the side panel separately from the working openings, or There are some which can be temporarily fixed by engaging the latching claw with the edge of the opening for work using elastic force (see, for example, Patent Document 1 and Patent Document 2).

JP-A-6-74492 (paragraph 0008, FIG. 2, FIG. 3) JP-A-7-217944 (paragraph 0031, paragraph 0021) JP-A-7-63376 (FIG. 1)

  According to the technology described in Patent Document 1, if the valve cover is made of resin, the drain port provided in the valve cover burns or melts down due to heat in the event of a fire. The opening opened in the side panel of the machine body is exposed. When this opening is exposed, in the case of a fire caused by the outside of the outdoor unit as a fire source, that is, a fire due to an external fire, flames from the outside of the unit spread into the interior of the outdoor unit by entering the inside of the unit. Conversely, in the case of a fire due to internal fire, the flame may spread from the inside of the outdoor unit through the opening to the outside of the machine, especially to the house, etc., and the house may be burnt down or in the worst case human damage may occur. is there. In any case, if there is an opening through which the flame can enter the outdoor unit, it becomes difficult to determine and prove whether the outdoor unit fire or the external fire after a fire.

  Such a problem of fire spread also exists in the techniques described in Patent Document 2 and Patent Document 3. That is, in the case of having a locking claw for temporary fixing and a hole for engagement, and when the locking claw is made of resin, in the event of a fire, the locking claw burns or melts down due to heat. Will occur.

  Further, according to the techniques described in Patent Document 2 and Patent Document 3, since the cover can be temporarily fixed when the cover covering the working opening is attached, the subsequent final tightening (screwing) work is easy. However, at the time of maintenance, it is necessary to release the cover from the fixing part including the temporary fixing part, and there is no need to fix the cover to the outdoor unit body, so there is a possibility that the valve cover may be accidentally dropped and damaged. there were. Furthermore, in places where there was traffic at the fall point, there was a concern that the fallen valve cover could hit a passerby and cause injury.

  The present invention has been made to solve the above-described problems. The first object is to determine and prove whether a fire is caused by internal fire or external fire at the time of a fire. In addition, an object of the present invention is to provide an outdoor unit of an air conditioner that has improved fire safety compared to the conventional one by allowing condensed water dripping from the packed valve to be collected inside the outdoor unit body. .

  In addition, the second object of the present invention is to improve safety without causing the valve cover to fall unintentionally on the ground during maintenance work of an outdoor unit of an air conditioner installed at a high place. An object is to provide an outdoor unit of an air conditioner.

The outdoor unit of the air conditioner according to the present invention corresponds to an outdoor unit main body, a packed valve for refrigerant pump down and refrigerant charging disposed on one side of the outdoor unit main body, and a packed valve of the outdoor unit main body. A working opening formed on the side surface and a valve cover that is detachably secured to the side surface of the outdoor unit main body to conceal the opening and the packed valve, and the valve cover is disposed on the lower end side of the outdoor unit. It has an abutting portion that can come into contact with a portion below the lower edge of the working opening on the side surface of the main body, and at least the inner surface side is made of metal, and the inner surface made of metal When the valve cover is attached to the side of the outdoor unit body, a guide plate made of metal is inserted into the working opening so that it is located below the packed valve. Rate has an inclined piece portion inclined downwardly toward the inside of the outdoor unit main body, the inclined piece portion is configured to extend to the inside than the lower edge of the opening for the working, the valve cover In the state where there is a gap between the upper part of the work opening and the upper edge of the work opening, the inclined piece part comes into contact with the lower edge of the work opening from the inside, and the butting part of the valve cover is It abuts on a portion below the lower edge of the working opening .

In the outdoor unit of the air conditioner of the present invention, the condensed water that adheres to the packed valve and drops can be guided to the inside of the outdoor unit main body by the guide plate. The condensed water led into the outdoor unit main body is discharged from a predetermined path.
Even if an external fire occurs and the outer surface of the valve cover is melted or burnt out by heat, the inner surface of the valve cover is made of metal, so the work opening is covered with the valve cover. Since there is no hole or the like other than the work opening in the area of the valve cover, the flame from the outside of the machine does not enter from the work opening.
Similarly, when an internal fire occurs, at least the inner surface side is still covered with a valve cover made of metal, so that it does not spread outside from the working opening. Accordingly, it is possible to determine whether or not the source of the fire is internal fire or external fire, and to obtain an outdoor unit of an air conditioner with improved drainage.
Also, when the valve cover is unintentionally dropped when the valve cover is released from the fixing means during maintenance, the back side of the inclined piece of the guide plate is at the tip of the lower edge of the work opening. Contact from the inside. Further, the valve cover has a butting portion on the lower end side that is in contact with and supported by a portion below the lower edge of the working opening on the side surface of the outdoor unit body, so that tilting outward is prevented. The For this reason, the valve cover is prevented from falling off from the outdoor unit main body. For this reason, even if the valve cover falls down unintentionally during maintenance work on the outdoor unit installed in high places, the valve cover does not fall to the ground, It is possible to prevent accidents where the cover hits a person, and to obtain a highly safe outdoor unit of an air conditioner when installed at a high place.

It is a disassembled perspective view which shows the state which removed the valve cover of the outdoor unit of the air conditioner which concerns on embodiment of this invention. It is a disassembled perspective view of the valve cover of the outdoor unit of the air conditioner which concerns on embodiment of this invention. It is an AA arrow directional cross-sectional view of FIG. 1 which shows the state at the time of valve cover attachment of the outdoor unit of the air conditioner which concerns on embodiment of this invention. It is an AA arrow directional cross-sectional view of FIG. 1 which shows the state at the time of valve cover removal of the outdoor unit of the air conditioner which concerns on embodiment of this invention.

FIG. 1 is an exploded perspective view showing a state in which a valve cover of an outdoor unit of an air conditioner according to an embodiment of the present invention is removed, and FIG. 2 is an exploded view of the valve cover of the outdoor unit of the air conditioner according to the embodiment of the present invention. It is a perspective view.
The outdoor unit of the air conditioner according to the embodiment of the present invention includes a packed valve 2 for refrigerant pump down and refrigerant charging on one side in the outdoor unit main body 1 as shown in FIGS. 1 and 2. In order to secure the maintenance space 2, a working opening (hereinafter simply referred to as “opening”) 4 is provided in the side panel 3 which is the side surface of the outdoor unit body 1. A valve cover 5 is attached to cover the opening 4 and the packed valve 2.

  The valve cover 5 is formed of a resin and is disposed on the outside of the outdoor unit main body, an outer panel 6 that is formed of sheet metal, an inner panel 7 that is disposed on the inside of the outdoor unit main body, and a drain plate that is formed of sheet metal. It is comprised by three parts with the guide plate 8 which is.

  The outer panel 6 and the inner panel 7 are fixed to each other by a metal screw, and the inner panel 7 and the guide plate 8 are fixed to each other by a metal screw, spot welding or the like.

  The outer panel 6 and the inner panel 7 are fixed to the side panel 3 of the outdoor unit main body 1 together by screws 9 which are metal fastening means.

This will be described in more detail with reference to FIGS. FIG. 3 is a cross-sectional view taken along the line AA in FIG. 1 showing a state when the valve cover of the outdoor unit of the air conditioner according to the embodiment of the present invention is attached, and FIG. 4 is an air conditioner according to the embodiment of the present invention. It is an AA arrow directional cross-sectional view of FIG. 1 which shows the state at the time of valve cover removal of this outdoor unit.
As shown in FIGS. 3 and 4, the outer panel 6 is provided with a groove 6 a at its upper end so that a flange 17 that can be bent inside the outdoor unit main body formed at the upper edge of the opening 4 can be fitted. In addition, an outer panel abutting on the lower end side of the outdoor unit main body 1 can be brought into contact with a portion below the flange 11 that is bent inward of the outdoor unit main body formed at the lower edge of the opening 4 in the side panel 3 of the outdoor unit main body 1. A portion 6b is provided.

  Further, as shown in FIGS. 3 and 4, the inner panel 7 is provided with a locking portion 7 a that can be engaged with the inner edge of the groove 6 a on the outer panel 6 at the upper end thereof, and the lower end thereof. On the side, an inner panel abutting portion 7b that can abut on a portion between the opening 4 and a portion where the outer panel abutting portion 6b of the side panel 3 of the outdoor unit body 1 abuts is provided.

  The guide plate 8 is inserted into the working opening 4 so as to be positioned below the packed valve 2 with the valve cover 5 attached to the outdoor unit body 1 as shown in FIGS. 2 to 4 (FIG. 3). ing. Further, the guide plate 8 is provided with an inclined piece portion 10 that is inclined downward toward the inside of the outdoor unit main body. The inclined piece 10 extends to the inner side of the flange 11 at the lower edge of the opening 4, and a locking piece 15 that bends downward is provided at the inner edge. As shown in FIG. 4, the locking piece 15 has a gap 18 between the upper portion 16 of the valve cover 5 and the upper edge (flange 17) of the opening 4, that is, a screw 9 for fixing the valve cover during maintenance work. And the valve cover 5 can be brought into contact with the front end of the flange 11 at the lower edge of the opening 4 together with the back side 19 of the inclined piece 10 in a state where the valve cover 5 is lowered downward.

  Further, a dew condensation water guide 20 composed of protrusions or depressions is provided on the upper surface of the inclined piece portion 10 of the guide plate 8, and attempts to protrude in the lateral direction with the force dripped onto the upper surface of the inclined piece portion 10. The dew condensation water 14 is blocked by the dew condensation water guide 20 so that it can be guided to the lower locking piece 15.

  Further, the end edge of the locking piece portion 15 of the guide plate 8 is cut obliquely upward at a predetermined angle with respect to the center in the left-right direction when viewed from the back surface side of the guide plate 8, The tip 23 is formed at the lower end and the left and right oblique edges 22. Thereby, the dew condensation water 14 that has flowed from the inclined piece 10 to the locking piece 15 can be guided from the oblique edge 22 to the tip 23.

  The outdoor unit main body 1 is provided with a base 12 which is a bottom plate formed of sheet metal at the bottom of the outdoor unit main body. The base 12 mainly has a drain hole 13 for discharging condensed water or the like to the outside. Is formed.

  Since the outdoor unit of the air conditioner according to the embodiment of the present invention is configured as described above, when the condensed water 14 is condensed on the packed valve 2 as shown in FIG. The dew condensation water 14 can be received by the inclined piece 10 of the guide plate 8 provided in the guide plate 8 and guided to the inside of the outdoor unit main body 1 by the inclined piece 10 and the dew condensation water guide 20. The condensed water 14 guided to the inside of the outdoor unit main body 1 flows downward along the inclined piece portion 10 of the guide plate 8, flows from the inclined piece portion 10 to the locking piece portion 15, and reaches the end of the locking piece portion 15. Then, it flows from the oblique edge 22 to the tip 23 at the end edge portion, is collected at the tip 23 and drops onto the base 12. The dropped condensed water 14 is discharged from the drain hole 13 of the base 12 through an appropriate route. Thereby, the dew condensation water 14 received by the guide plate 8 can be dripped at an arbitrary position of the base 12 to which the tip 23 of the locking piece 15 of the guide plate 8 faces.

  Further, even if an external fire occurs and the outer panel 6 of the valve cover 5 is melted by heat or burned out, the inner panel 7 made of sheet metal remains and the opening 4 is covered with the inner panel 7. In addition, since there is no hole or the like other than the opening 4 in the area of the inner panel 7, flames from outside the machine do not enter from the opening 4.

  Similarly, when an internal fire occurs, the opening 4 remains covered with the inner panel 7 made of sheet metal, so that it does not spread to the outside. Accordingly, it is possible to determine whether or not the source of the fire is internal fire or external fire, and to obtain an outdoor unit of an air conditioner with improved drainage.

  Further, when the valve cover 5 is dropped unintentionally when the fixing screw 9 is removed in order to release the valve cover 5 from the fastening portion and remove it during maintenance, a guide plate as shown in FIG. The back surface side 19 of the eight inclined piece portions 10 contacts the tip of the flange 11 at the lower edge of the opening 4 from the inside. At this time, the locking piece 15 of the guide plate 8 also contacts the tip of the flange 11 at the lower edge of the opening 4 from the inside. Further, the valve cover 5 has an outer panel abutting portion 6 b and an inner panel abutting portion 7 b that are in contact with the outer surface of the side panel 3 at a position lower than the locking piece portion 15, so Since it is supported by the stopper 15, the outer panel abutting portion 6 b and the inner panel abutting portion 7 b, the outward tilting is reliably prevented. For this reason, the valve cover 5 is prevented from falling off from the outdoor unit main body 1 to the outside. For this reason, even when the valve cover 5 is dropped unintentionally during maintenance work of the outdoor unit body 1 installed at a high place, the valve cover 5 does not fall to the ground, and the valve cover 5 itself is damaged. In addition, it is possible to prevent an accident in which the valve cover 5 hits a person. Therefore, it is possible to obtain an outdoor unit of an air conditioner with high safety when installed at a high place.

  Here, an example in which a locking piece portion 15 that bends downward is provided at the inner edge of the inclined piece portion 10 of the guide plate 8 so that the inclination of the valve cover 5 to the outside can be reliably prevented. As described above, by making the extension length of the inclined piece 10 longer, the locking piece 15 can be made unnecessary, and the same effect as the case where the locking piece 15 is provided. Can be obtained.

  Further, here, the valve cover 5 is described by taking as an example an example in which the valve cover 5 is constituted by three parts of a resin outer panel 6, a sheet metal inner panel 7, and a sheet metal guide plate 8. Needless to say, the valve cover may be composed of two parts, a sheet metal panel (inner panel 7) and a sheet metal guide plate 8, as long as the required functions can be satisfied. In this case, a simple and inexpensive valve cover can be obtained.

  1 outdoor unit body, 2 packed valve, 3 side panel (side surface of outdoor unit body), 4 work opening, 5 valve cover, 6 resin outer panel, 6a groove, 6b outer panel butting part (butting Part), 7 sheet metal inner panel (inner surface made of metal), 7a locking part, 7b inner panel abutting part (butting part), 8 sheet metal guide plate (guide plate made of metal) , 9 Metal screw (metal fastening means), 10 inclined piece, 11 flange (lower edge of the working opening), 12 base, 13 drain hole, 14 condensed water, 15 locking piece, 16 upper part of valve cover, 17 flange (upper edge of opening), 18 gap, 19 back side of inclined piece, 20 dew condensation water guide, 22 inclined edge, 23 tip of locking piece.

Claims (6)

The outdoor unit itself,
A refrigerant pump down and a refrigerant charge packed valve disposed on one side of the outdoor unit body;
An opening for operation formed on a side surface corresponding to the packed valve of the outdoor unit body;
A valve cover that is detachably secured to the side surface of the outdoor unit main body and conceals the opening and the packed valve;
The valve cover has, on the lower end side thereof, a butting portion that can come into contact with a portion below the lower edge of the working opening on the side surface of the outdoor unit body, and at least the inner surface side is made of metal. Configured,
The inner surface made of metal has a guide plate made of metal so as to be positioned below the packed valve when the valve cover is attached to the side surface of the outdoor unit body. Inserted and attached to the
The guide plate has an inclined piece portion that is inclined downward toward the inside of the outdoor unit main body ,
The inclined piece portion is configured to extend to the inside from the lower edge of the working opening ,
In a state where a gap is formed between the upper portion of the valve cover and the upper edge of the working opening, the inclined piece portion is in contact with the lower edge of the working opening from the inside on the back side, and the valve The outdoor unit of an air conditioner , wherein the abutting portion of the cover is in contact with a portion below the lower edge of the working opening .   The outdoor unit for an air conditioner according to claim 1, wherein the guide plate has a locking piece portion that bends downward at an extended end of the inclined piece portion.   The edge of the end of the locking piece portion of the guide plate is cut obliquely upward at a predetermined angle with respect to the center in the left-right direction when viewed from the back side of the guide plate, and becomes the lower end of the locking piece portion The outdoor unit for an air conditioner according to claim 2, wherein the outdoor unit is formed on the left and right diagonal edges.   The outdoor unit for an air conditioner according to any one of claims 1 to 3, wherein a dew condensation water guide configured by a protrusion or a depression is provided on an upper surface of the inclined piece portion of the guide plate.   The valve cover comprises a resin outer panel, a sheet metal inner panel assembled inside the outer panel, and a sheet metal guide plate attached to the sheet metal inner panel. The outdoor unit of the air conditioner according to any one of claims 1 to 4, wherein the outdoor unit is an air conditioner.   5. The air according to claim 1, wherein the valve cover includes a sheet metal panel and a sheet metal guide plate attached to the sheet metal panel. Harmonic outdoor unit.

Images