JP5402851B2 - Air conditioner outdoor unit - Google Patents

Description

  The present invention relates to an outdoor unit of an air conditioner, and more particularly to a configuration of a service panel for maintenance provided detachably on a main body.

  Large capacity type outdoor units and packaged air conditioner outdoor units have a pipe connection part housed inside the main unit, and contain pipe connection work and refrigerant filling work when installing an outdoor unit, or a compressor and control board. Corresponding to the maintenance inspection work of the electrical component box, a large-diameter opening is provided on the front surface of the compressor chamber containing the compressor, and a detachable service panel is provided in the opening. The service panel is attached and detached by removing a plurality of screws fixing the service panel to the main body, and removing a locking claw of the service panel from the engagement hole of the main body.

  For example, the outdoor unit 40 shown in FIG. 8 has a front panel 42, a right panel 44, and a left panel 43 standing on a bottom plate 41 with an air outlet 42b. The right side of the front panel 42 and the front surface of the left side panel 43 are largely opened so that the service panel 46 formed in an approximately L shape can be attached to and detached from the opened part. It has become.

  At the right end corresponding to the left panel 43 of the service panel 46, a plurality of locking claws 46a are formed in the vertical direction. The locking claw is formed. A plurality of engagement holes 43 a corresponding to the locking claws 46 a are formed at the front edge of the left panel 43, and a plurality of engagement holes 42 a are also formed at the right end portion of the front panel 42.

  As shown in FIG. 9A, the locking claw 46 b inserted into the engagement hole 42 a of the front panel 42 protrudes rearward, but the engagement corresponding to the engagement hole 43 a of the left panel 43. As shown in FIG. 9B, the pawl 46a includes a base end portion 46c bent in the lateral direction and a bent portion 46d bent at an inclination from the tip end portion of the base end portion 46c. Therefore, the width dimension V resulting from the bending is set to be larger than the opening width dimension W of the engagement hole 42a.

  To attach the service panel 46, first, the service panel 46 is tilted so that the left end portion is on the near side, and the plurality of locking claws 46a on the right end portion are inserted into the engagement holes 43a of the left panel 43, respectively. Next, when the service panel 46 is rotated so as to be parallel to the front surface of the main body, the locking claw 46a is temporarily held without coming out of the engagement hole 43a.

  Subsequently, the locking claw at the left end portion is inserted into the engagement hole 42a, and the locking claw 46a engages with the engagement hole 43a as shown in FIG. After the service panel 46 is slid upward so that the locking claw 46b engages with the engagement hole 42a, screws are inserted into a plurality of screw insertion holes of the service panel 46 (not shown), and screwed into the screw holes of the main body. The service panel 46 is fixed.

  The locking claw 46a is temporarily held in the engagement hole 43a, rotated to insert the locking claw 46b into the engagement hole 42a, and the service panel 46 is attached, so that the service panel is heavy and bulky. 46 can be attached and detached safely and by an operator alone.

However, the width dimension V of the bent portion 46d of the locking claw 46a that cannot be easily seen from the front during the attachment / detachment operation is set to be larger than the opening width dimension W of the engagement hole 42a. There has been a problem that it becomes difficult to insert the locking claw 46a into 42a. Further, when the locking claw 46a is formed so as to protrude rearward without being bent, when the service panel 46 is slid downward from the fixed position, the locking claw 46a at the right end and the locking claw at the left end are 46b and the engagement holes 43a and 42a are simultaneously in a free state, which may cause the service panel 46 to fall.

Japanese Patent Laying-Open No. 2005-180792 (page 5, FIG. 2)

  In view of the above problems, the present invention makes it easy to insert a locking claw that is difficult to visually recognize into an engagement hole, and prevents the service panel from being accidentally dropped when the service panel is slid downward. An object of the present invention is to provide an outdoor unit for an air conditioner that can safely and easily attach and detach the panel to and from the main body.

  In order to solve the above-mentioned problems, the present invention comprises a main body composed of a bottom plate, a front panel provided with an outlet, left and right side panels, and a top plate provided around a flange hanging downward. An air conditioner that includes a compressor and a blower fan, has an opening for maintenance and inspection from the front panel to the side panel, and a service panel is detachably provided in the opening. In the outdoor unit, a locking claw protruding rearward is provided on both sides of the service panel, and an engagement hole corresponding to the locking claw is provided on a peripheral edge of the opening. A locking pawl is inserted into the engagement hole, and the lower end of the locking claw at one side contacts the lower end of the engagement hole into which the locking claw is inserted, and is locked with the upper end of the locking claw. Between the upper edge of the engagement hole where the nail is inserted While a gap is created that allows the locking claw to be pulled out horizontally toward the front, the upper end of the locking claw at the other end is locked to the upper edge of the engagement hole into which the locking claw is inserted. By tilting the service panel between the lower end of the pawl and the lower end edge of the engagement hole into which the locking pawl is inserted, a gap is created that allows the service panel to be pulled out downward on the front surface. A first state in which a part of the upper end portion is held on the rear surface of the flange of the top plate and is temporarily fixed to the opening, and the service panel is slid upward from the first state to While the pawl engages with the engagement hole, the gap between the lower end of the locking claw at one end and the lower end of the engagement hole into which the locking claw is inserted is There is a large gap between the lower end of the locking claw and the lower end of the engagement hole into which the locking claw is inserted. In a second state in which the upper end of Bisupaneru is inserted to a position corresponding to the flange rear surface upper portion of the top plate has a configuration so as to be retained in the opening.

  Moreover, the latching claw of the said other side end becomes a structure which has an inclined surface in the upper front surface facing the engagement hole corresponding to the said latching claw.

  According to the first aspect of the present invention, the lower end of the locking claw at one side contacts the lower end of the engagement hole, and there is a gap between the upper end of the engagement claw and the upper end edge of the engagement hole. The upper end of the locking claw at the side end is locked to the upper edge of the engagement hole, and there is a gap between the lower end of the locking claw and the lower edge of the engagement hole, and the upper end of the service panel is The first state locked to the flange back surface of the top plate and the second state where the locking claw is engaged with the engagement hole and fixed to the main body by the fixing means are held by the main body. By doing so, it is possible to easily attach and detach the service panel even if it is difficult to visually recognize the locking claw, and it is possible to prevent a problem that the service panel is unexpectedly detached from the first state.

  According to the second aspect of the present invention, the service panel is placed on the lower side so that the locking claw can be removed from the engagement hole by using the inclined surface provided on the locking claw at the other end. By tilting, the service panel can be easily removed from the main body.

It is an external appearance perspective view which shows the outdoor unit of the air conditioner by this invention. It is a disassembled perspective view which shows the outdoor unit of the air conditioner by this invention. It is a perspective view which shows the state which removed the service panel from the main body. It is a perspective view which shows a service panel. It is sectional drawing which shows the state by which the service panel was fixed to the main body. It is sectional drawing which shows the state which slid the service panel downward. It is sectional drawing which shows the state which removes a service panel from a main body. It is explanatory drawing which shows the conventional outdoor unit. It is explanatory drawing which shows the relationship between the latching claw and engagement hole of the conventional outdoor unit.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail as examples based on the attached drawings.

  The outdoor unit of an air conditioner according to the present invention is a flat plate having a pair of left and right legs 1a on the lower surface and a flange described later around as shown in the external perspective view of FIG. 1 and the exploded perspective view of FIG. A base 1 made of a sheet metal, a front panel 2 provided on the front side of the base 1 and provided with a fan outlet 2a and a fan guard 2b for protecting the outlet 2a, and a right side of the base 1. The right panel 5, the left panel 6 erected on the left side of the base 1, the front panel 2, the right panel 5, and the top plate 4 made of sheet metal attached to the upper surface of the left panel 6. In addition, the rear surface of the main body 1 serves as a suction port for outside air.

  Further, an opening 17 described later is formed from the left side of the front panel 2 to the front side of the left panel 6, and the service panel 3 is detachably mounted in the opening 17.

  By removing the service panel 3 from the main body from the main body, maintenance and inspection work can be performed on the compressor 10 and piping and valves connected to the compressor 10 and the electrical component box 16, which will be described later. It can be done.

  Next, the overall configuration will be described. As shown in the exploded perspective view of FIG. 2, the base 1 is divided into left and right sides by a partition plate 7, and a machine room 8 is provided in one of the divided parts and a heat exchanger room 9 is provided in the other part. Yes. The machine room 8 is provided with a compressor 10 and an operation valve 10a to which piping connected to the indoor unit is connected. A control board is accommodated above the control valve 10a and an electrical component cover 16a is attached. An electrical component box 16 is provided.

  The heat exchanger chamber 9 is provided with a heat exchanger 11 which is composed of a large number of fins arranged in parallel and heat transfer tubes arranged so as to be orthogonal to the fins, and is bent in an L shape. In addition, a fan motor mounting base 12 is provided. A fan motor 13 that pivotally supports a propeller fan 14 as a blower fan is rotatably fixed to the fan motor mount 12, and the propeller fan 14 is protected on the back surface of the air outlet 2 a of the front panel 2. An annular fan ring 15 is provided.

  When the propeller fan 14 is driven by the fan motor 13, outdoor air is sucked from the back of the main body and passes through the heat exchanger 11 to exchange heat with the refrigerant flowing in the heat exchanger 11. The heat-exchanged air is again discharged from the air outlet 2a of the front panel 2 to the outside, and the heat-exchanged refrigerant passing through the heat exchanger 11 is circulated to an indoor unit (not shown) so as to cool and heat the room. It has become.

  When the open panel 3 is removed from the main body, as shown in FIG. 3, maintenance and inspection work of the electrical component box 16 containing the compressor 10, the operation valve 10a, and the control board disposed in the machine room 8 from the opening 17 is performed. Can be done. A stepped portion 18a is formed on the edge of the front panel 2 on the opening 17 side, and the side edge flange 18 connected to the stepped portion 18a is engaged with an engagement hole 21 formed vertically in the vertical direction. A pair of holes 22 are provided, and a plurality of screw holes 18b are provided.

  Similarly, a step 20a is also formed on the lower edge of the front panel 2 on the opening 17 side, and a horizontally long rib 20c projects from the lower edge flange 20 connected to the step 20a toward the front. In addition, a screw hole 20b is provided. When the service panel 3 is mounted, the rib 20c presses the service panel 3 forward so that the rib 20c is fitted into the opening 17 without loosening.

  A stepped portion 19a is also formed on the front edge of the left panel 6 on the opening 17 side, and a side edge flange 19 connected to the stepped portion 19a is formed, and the lower portion of the stepped portion 19a is formed in a vertically long shape. An engagement hole 23 is provided.

  As shown in the perspective view from the back surface side of FIG. 4, the service panel 3 is formed in an L-shaped cross section including a front surface portion 3 a covering the front surface side of the opening 17 and a side surface portion 3 b covering the side surface side. A locking claw 24 and a locking claw 25 corresponding to the engagement hole 21 and the engagement hole 22 of the side edge flange 18 are directed rearward at the right side edge, which is one side edge of the front surface portion 3a. A locking claw 26 corresponding to the engaging hole 23 of the side edge flange 19 is also provided at the lower end of the left side edge, which protrudes and becomes the other side end of the front surface portion 3a. Further, as will be described later, the upper end portion 3c is held on the rear surface of the flange 4a of the top plate 4, and a horizontally long rib 3d is projected from the rear surface of the upper end portion 3c. Further, a plurality of screw insertion holes (not shown) are formed in the periphery.

  The locking claw 24 and the locking claw 25 have the same shape and size, and the corresponding engagement hole 21 and the engagement hole 22 have the same shape and size. And the latching claw 25 and the latching claw 26 differ in a shape and a dimension. Further, the engagement hole 21, the engagement hole 22, and the engagement hole 23 have different opening widths in the vertical direction.

  Next, the locking claw 24 and the locking claw 25 are engaged with the engagement hole 21 and the engagement hole 22, respectively, and the locking claw 26 is engaged with the engagement hole 23 so that the service panel 3 is fixed to the main body. The performed first state will be described. FIG. 5A is a cross-sectional view showing a state in which the locking claw 24 and the locking claw 25 are engaged with the engagement hole 21 and the engagement hole 22, and FIG. 4 is a cross-sectional view showing a state in which the engagement hole 23 is engaged. FIG.

  As shown in FIG. 5A, the locking claw 24 includes a base portion 24a formed in a rectangular shape and a claw portion 24b projecting upward from the base portion 24a. The base portion 25a is also formed in a rectangular shape, and the claw portion 25b is provided so as to project upward from the base portion 25a.

  As shown in FIG. 5B, the locking claw 26 also includes a base portion 26a formed in a rectangular shape and a claw portion 26b projecting upward from the base portion 26a. The locking portion 26c and the second locking portion 26d above the first locking portion 26c are configured. The front side of the second locking portion 26d is a hypotenuse 26e. Further, the claw portion 26 b is set longer than the claw portion 24 b of the locking claw 24 and the claw portion 25 b of the locking claw 25.

  After the service panel 3 is attached to the opening 17 and the locking claw 24 and the locking claw 25 are inserted into the engagement hole 21 and the engagement hole 22, the service panel 3 is slid upward. Then, as shown in FIG. 5A, the claw portion 24 b of the locking claw 24 engages with the back surface of the upper edge of the engagement hole 21 with a length of M, and the claw portion 25 b of the locking claw 25. Is also engaged with the back surface of the upper edge of the engagement hole 22 with a length of dimension M. Further, in this state, a gap A is generated between the lower end of the base 24 a of the locking claw 24 and the lower end edge of the engagement hole 21, and between the lower end of the base 25 a of the locking claw 22 and the lower end edge of the engagement hole 22. Also, a gap A is generated.

  When the service panel 3 is slid upward, the locking claw 26 also engages the claw 26b with the back surface of the upper edge of the engagement hole 23 with a length of P as shown in FIG. Further, a gap A + U larger than the gap A in the locking claw 24 and the locking claw 25 is formed between the lower end of the base portion 26 a and the lower end edge of the engagement hole 23.

  In the second state in which the service panel 3 is fixed to the main body by screwing, as shown in FIGS. 5A and 5B, the upper edge of the base 24a of the locking claw 24 and the engagement hole 21 The upper end edge comes into contact with the upper end edge of the base 25a of the locking claw 22 and the upper end edge of the engagement hole 22 comes into contact with each other. Further, the upper end edge of the base portion 26a of the locking claw 26 and the upper end edge of the engagement hole 23 come into contact with each other, and the engagement hole 21, the engagement hole 22 and the engagement hole 21 are engaged so as to maintain these relationships. The position of the upper edge of the hole 23 is set. In addition, when the service panel 3 is attached to the main body, the first state to be described later, which is in a temporarily fixed state in the opening 17, is the same as the temporarily fixed state when the service panel 3 is removed. .

  As shown in FIGS. 5 (A) and 5 (B), the upper end 3c of the service panel sinks into the back surface of the flange 4a of the top plate 4 with a length of L and is held by the flange 4a. It has become. Further, the rib 3d of the upper end portion 3c that has entered is pressed against the back surface of the flange 4a, thereby preventing backlash when the main body of the service panel 3 is mounted.

  When the locking claw 24, the locking claw 25, and the locking claw 26 are respectively engaged and the upper end portion 3c is held on the back surface of the flange 4a, a screw is inserted into a screw insertion hole (not shown) of the service panel 3. The service panel 3 is fixed to the main body by being screwed into the screw hole 18b and the screw hole 20b.

  Next, a procedure for shifting from the fixed second state to the first state in which the service panel 3 can be removed from the main body will be described. First, in the state shown in FIG. 5A, the plurality of screws that have fixed the service panel 3 to the main body are removed, and the service panel 3 is slid downward. When sliding downward, the lower end of the base 24a of the locking claw 24 comes into contact with the lower edge of the engaging hole 21 and the base of the locking claw 25 as shown in the upper and lower S parts shown in FIG. The lower end of 25 a contacts the lower end edge of the engagement hole 22. Further, a gap R is formed between the upper end of the claw portion 24b and the upper end edge of the engagement hole 21, and similarly, a gap R is formed between the upper end of the claw portion 25b and the upper end edge of the engagement hole 22. It is like that. Since the gap R is generated between the claw portion 24b and the claw portion 25b and the upper end edges of the engagement hole 21 and the engagement hole 22, the engagement claw 24 and the engagement claw 25 are separated from the engagement hole 21 and the engagement claw 25, respectively. It will be in the state which can be pulled out horizontally from the joint hole 22 toward the front.

  However, even when the locking claw 24 and the locking claw 25 are disengaged from the engagement hole 21 and the engagement hole 22, the upper end 3 c of the service panel 3 has a dimension Q on the back surface of the flange 4 a of the top plate 4. Thus, an unexpected situation in which the upper end 3c of the service panel 3 is detached from the main body and falls to the front surface can be prevented.

  As described above, the locking claw 24 and the locking claw 25 are disengaged from the engagement hole 21 and the engagement hole 22, and the upper end portion 3 c of the service panel 3 is held on the back surface of the flange 4 a of the top plate 4. In the state, the claw portion 26b of the locking claw 26 is formed longer than the claw portion 24b of the locking claw 24 and the claw portion 25b of the locking claw 25, which is located below the left side portion of the front surface portion 3a. 6 (B), the second locking portion 26d formed on the upper portion of the claw portion 26b of the locking claw 26 is locked to the upper edge of the engagement hole 23 at one place in the section of the dimension T. It is supposed to be. In addition, by tilting the service panel 3 with a length of a dimension U between the lower end of the base portion 26a and the lower end edge of the engagement hole 23, a gap that can be pulled out below the front surface is generated. ing.

  When the front end of the locking claw 26 located on the left side is locked at one position on the upper edge of the engagement hole 23, the lower part of the service panel 3 is suddenly detached from the opening 17 and outside the main body. It is possible to prevent unexpected situations such as falling.

  To remove the service panel 3 from the main body from the first state described above, as shown in FIG. 7, the service panel 3 is tilted so that the lower end portion of the service panel 3 is tilted forward, and the locking claw 26 The length U of the dimension U generated between the lower end of the base portion 26 a and the lower end edge of the engagement hole 23 while sliding the oblique side 26 e formed in the two locking portions 26 d to the upper end edge of the engagement hole 23. The base portion 26a is pulled out to the front side by utilizing the gap, and the upper end portion 3c is pulled out from the back surface of the flange 4a of the top plate 4. Thereby, the service panel 3 can be removed from the main body.

  As described above, the service panel 3 is slid to the lower end of the opening 17 from the second state in which the service panel 3 is fixed to the main body, and the upper end 3c is locked to the back surface of the flange 4a. The second locking portion 26d is shifted to the first state locked to the upper end edge of the engagement hole 23, and the service panel 3 is removed from the main body from the first state and the operation is continued. Thus, even a single worker can attach and detach the service panel 3 while ensuring safety.

  When the maintenance work is finished and the service panel 3 is mounted on the main body again, first, the service panel 3 is temporarily fixed to the main body so as to be in the first state described above, and then the upper side is slid upward. The state is set, and fixing is performed by a plurality of screws.

  As described above, when the service panel 3 is attached / detached, the service panel 3 can be temporarily fixed to the main body in the above-described first state, so that the attachment / detachment work can be easily performed. Since the claw 25 and the locking claw 26 do not require special processing in shape, an increase in cost can be suppressed.

DESCRIPTION OF SYMBOLS 1 Base 1a Leg 2 Front panel 2a Air outlet 2b Fan guard 3 Service panel 3a Front surface part 3b Side surface part 3c Upper end part 3d Rib 4 Top plate 4a Flange 5 Right side panel 6 Left side panel 7 Partition plate 8 Machine room 9 Heat exchanger room DESCRIPTION OF SYMBOLS 10 Compressor 10a Operation valve 11 Heat exchanger 12 Fan motor mounting base 13 Fan motor 14 Propeller fan 15 Fan ring 16 Electrical component box 16a Electrical component cover 17 Opening portion 18 Side edge flange 18a Step portion 18b Screw hole 19 Side edge flange 19a Step portion 20 Lower edge flange 20a Step portion 20b Screw hole 20c Rib 21 Engagement hole 22 Engagement hole 23 Engagement hole 24 Locking claw 24a Base portion 24b Claw portion 25 Locking claw 25a Base portion 25b Claw portion 26 Locking claw 26a Base portion 26b claw portion 26c first locking portion 26d second locking portion 26e hypotenuse

Claims (2)

The main body is composed of a bottom plate, a front panel having a blowout port, left and right side panels, and a top plate having a flange that hangs downward. A compressor and a blower fan are provided in the main body. In the outdoor unit of the air conditioner, in which an opening for maintenance and inspection is formed from the front panel to the side panel, and a service panel is detachably provided in the opening,
Provided with locking claws protruding rearward on both sides of the service panel, and provided with engagement holes corresponding to the locking claws on the periphery of the opening,
In the service panel, the engaging claws on both sides are inserted into the engaging holes, and the lower ends of the engaging claws on one side contact the lower ends of the engaging holes into which the engaging claws are inserted. Between the upper end of the latching claw and the upper edge of the engagement hole into which the same latching claw is inserted, a gap is created that allows the latching claw to be pulled out horizontally toward the front, while the latching claw on the other end The upper end portion of the engagement hook engages with the upper end edge of the engagement hole into which the engagement pawl is inserted, and between the lower end portion of the engagement pawl and the lower end edge of the engagement hole into which the engagement pawl is inserted, By tilting the service panel, a gap is created that allows the service panel to be pulled out downward on the front surface. A part of the upper end of the service panel is held on the rear surface of the flange of the top plate, and the opening is temporarily secured. The first state,
The service panel is slid upward from the first state, the locking claws on both sides engage with the engagement holes, and the lower ends of the locking claws on one side end and the locking claws are inserted. The gap generated between the lower end of the engaging hole is larger than the lower end of the engaging claw at the other end and the lower end of the engaging hole into which the engaging claw is inserted. An outdoor unit for an air conditioner, wherein the upper end of the panel is held in the opening in a second state in which the upper end of the panel is inserted to a position corresponding to the upper flange back surface of the top plate. The outdoor unit for an air conditioner according to claim 1, wherein the engaging claw at the other side end has an inclined surface on an upper front surface facing an engaging hole corresponding to the engaging claw.