US20190368753A1 - Outdoor unit for air-conditioning apparatus - Google Patents
Outdoor unit for air-conditioning apparatus Download PDFInfo
- Publication number
- US20190368753A1 US20190368753A1 US16/466,664 US201716466664A US2019368753A1 US 20190368753 A1 US20190368753 A1 US 20190368753A1 US 201716466664 A US201716466664 A US 201716466664A US 2019368753 A1 US2019368753 A1 US 2019368753A1
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- US
- United States
- Prior art keywords
- temporary fixing
- casing
- fan guard
- anchoring portion
- outdoor unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/56—Casing or covers of separate outdoor units, e.g. fan guards
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/082—Grilles, registers or guards
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/082—Grilles, registers or guards
- F24F13/084—Grilles, registers or guards with mounting arrangements, e.g. snap fasteners for mounting to the wall or duct
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/20—Casings or covers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/20—Casings or covers
- F24F2013/205—Mounting a ventilator fan therein
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
Description
- The present invention relates to an outdoor unit for an air-conditioning apparatus and, more specifically, to a structure of attaching a fan guard.
- Hitherto, an outdoor unit for an air-conditioning apparatus, which includes a fan guard, is known. The fan guard covers an air outlet opening of an air duct for sending air. The fan guard prevents a user from touching a rotating fan through the air outlet opening. For example,
Patent Literature 1 describes a configuration that, in an outdoor unit, a fan guard is caused to slide along both sides of grooves on a casing from above and fitted to the grooves. With this configuration, when a top panel is attached, the fan guard is fixed, and thus fixing of the fan guard with a screw is not required. - Patent Literature 1: Japanese Unexamined Patent Application Publication No. 2000-039186
- With the configuration of
Patent Literature 1, the fan guard cannot be attached or detached without raising the fan guard by a distance corresponding to the height of the fan guard, and space having a height corresponding to the height of the fan guard is required above the outdoor unit. For example, when an outdoor unit is suspended in a veranda of an apartment, there is a problem that no work space for attaching or detaching the fan guard is ensured. - In order to cause the fan guard to smoothly slide along the grooves of the casing, clearance needs to be provided on the front, rear, right, and left sides of each slide portion. However, clearance between the fan guard and the casing causes repeated vibrations of the fan guard due to flow of outlet air through the fan guard during operation, so there is a problem of noise generation.
- The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a highly reliable outdoor unit for an air-conditioning apparatus, which does not require work space above and which simplifies work in attaching a fan guard, and which reduces noise during operation.
- An outdoor unit for an air-conditioning apparatus of an embodiment of the present invention includes a casing and a fan guard. The casing includes a front panel and a top panel. The front panel has an opening. The fan guard is made up of a combination of a plurality of vertical bars and a plurality of horizontal bars, and covers the opening. The fan guard includes an upper anchoring portion and a lower anchoring portion. The upper anchoring portion is provided at an upper end of one of the vertical bars, located at a center, or each of upper ends of at least two of the vertical bars, located apart from each other in a right and left direction of the casing. The lower anchoring portion is provided at a lower end of a plurality of the vertical bars, located apart from each other in the right and left direction of the casing. The upper anchoring portion is provided such that the upper end is bent toward the casing and further bent upward. The lower anchoring portion is provided such that the lower end is bent toward the casing. A distal end of a lower anchoring distal end portion that is a distal end-side portion of the lower anchoring portion is bent so as to be oriented downward. The front panel includes an upper temporary fixing groove and a lower temporary fixing hole. The upper anchoring portion is inserted in the upper temporary fixing groove. The upper temporary fixing groove restricts movement of the upper anchoring portion in the right and left direction. The lower anchoring portion is inserted in the lower temporary fixing hole. The lower temporary fixing hole restricts movement of the lower anchoring portion in a forward direction and in a downward direction. The upper temporary fixing groove and the upper anchoring portion are covered with the top panel.
- According to the embodiment of the present invention, the fan guard is temporarily fixed when the lower anchoring portion of the fan guard is inserted in the lower temporary fixing hole of the front panel and the upper anchoring portion is inserted in the upper temporary fixing groove, and the fan guard is fixed to the casing when the top panel is placed on the fan guard. Therefore, it is not required to fix the fan guard with a screw or raise the fan guard, and thus working space is reduced, and workability for attaching or detaching the fan guard improves. In addition, since movement of the fan guard in the right and left direction is restricted by the lower temporary fixing hole and the upper temporary fixing groove and movement of the fan guard in the forward direction is restricted by the top panel, vibrations during operation are reduced, and also noise due to vibrations may be suppressed.
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FIG. 1 is a perspective view of an outdoor unit for an air-conditioning apparatus according to Embodiment of the present invention. -
FIG. 2 is a schematic view illustrating a longitudinally sectional view along a plane containing a central axis of a fan of the outdoor unit for an air-conditioning apparatus according to Embodiment of the present invention. -
FIG. 3 is an exploded perspective view of a state where a fan guard and top panel of the outdoor unit for an air-conditioning apparatus according to Embodiment of the present invention are detached. -
FIG. 4 is an enlarged view of portion A inFIG. 3 and is an enlarged view of a portion around an upper temporary fixing groove at a right upper side when the front panel is viewed from the front. -
FIG. 5 is an enlarged view of portion B inFIG. 3 and is an enlarged view of a portion around a lower temporary fixing hole at a right lower side when the front panel is viewed from the front. -
FIG. 6 is a perspective view illustrating the fan guard of the outdoor unit for an air-conditioning apparatus according to Embodiment of the present invention. -
FIG. 7 is an enlarged view of a portion around a lower anchoring portion of the fan guard of the outdoor unit for an air-conditioning apparatus according to Embodiment of the present invention. -
FIG. 8 is a schematic sectional view along the line C-C inFIG. 7 . -
FIG. 9 is an enlarged view of a portion around an upper anchoring portion in a state where the top panel of the outdoor unit for an air-conditioning apparatus according to Embodiment of the present invention is detached. -
FIG. 10 is an enlarged view of the portion around the upper anchoring portion in a state where the top panel of the outdoor unit according to Embodiment of the present invention is attached. -
FIG. 11 is a schematic sectional view along the line D-D inFIG. 9 . -
FIG. 12 is a schematic sectional view along the line E-E inFIG. 10 . -
FIG. 13 is a schematic view illustrating an outdoor unit for an air-conditioning apparatus according to a modification of Embodiment of the present invention. - Hereinafter, an
outdoor unit 100 for an air-conditioning apparatus according to Embodiment of the present invention will be described. The mode described in the drawings is an example, and is not restrictive. In the drawings, the same reference signs denote the same or corresponding components, and this applies to the entire text of the specification. In the drawings, the magnitude relations among components can be different from the actual ones. - <Overall Configuration of
Outdoor Unit 100> -
FIG. 1 is a perspective view of theoutdoor unit 100 for an air-conditioning apparatus according to Embodiment of the present invention. As illustrated inFIG. 1 , theoutdoor unit 100 includes, for example, a box-shaped casing 10. Thecasing 10 includes afront panel 1 at a front side, aside panel 2 at a side, atop panel 3 at a top side, and aback panel 6. Theback panel 6 makes up a backside and a side facing theside panel 2. Thefront panel 1 of theoutdoor unit 100 has anopening 1 a that serves as an air duct. Theopening 1 a is covered with afan guard 5 at the front side from the outer side of thecasing 10. Thetop panel 3 has a lid shape and has sideperipheral portions 3 a at its four sides. The sideperipheral portions 3 a extend downward. Thetop panel 3 covers the top side of thecasing 10. The configuration of thecasing 10 of theoutdoor unit 100 is not limited to the above-described configuration, and may be changed as needed. The panels that make up thecasing 10 of theoutdoor unit 100, such as thefront panel 1, may be combined and integrated. Each panel may be made up of a plurality of separate panels. In the following description, the side where thefront panel 1 of thecasing 10 is disposed is defined as “front side”, theback panel 6 side facing thefront panel 1 in thecasing 10 is defined as “rear side”, and the right and left sides when thefront panel 1 of thecasing 10 is viewed from the front are defined as “right side” and “left side”. In addition, thetop panel 3 side of thecasing 10 is defined as “upper side”, and the side where a surface facing thetop panel 3 of thecasing 10 is located is defined as “lower side”. -
FIG. 2 is a schematic longitudinally sectional view along a plane including a central axis of a fan 4 of theoutdoor unit 100 for an air-conditioning apparatus according to Embodiment. As illustrated inFIG. 2 , the fan 4 is disposed inside thecasing 10. Amotor 8 is mounted at the center portion of the fan 4. Themotor 8 is mounted on a fixingelement 7 provided inside thecasing 10. Aheat exchanger 15 is disposed on theback panel 6 side of the fan 4 andmotor 8. Theback panel 6 has an air inlet 6 a that opens along theheat exchanger 15. When the fan 4 is driven by themotor 8 for rotation, outside air flows in through the air inlet 6 a, and is introduced into thecasing 10 from the backside. Then, air having exchanged heat with refrigerant in theheat exchanger 15 is discharged through theopening 1 a of thefront panel 1. - <Configuration of
Front Panel 1> -
FIG. 3 is an exploded perspective view of a state where thefan guard 5 and thetop panel 3 of theoutdoor unit 100 for an air-conditioning apparatus according to Embodiment are detached. As illustrated inFIG. 3 , thefront panel 1 has uppertemporary fixing grooves 1 b above theopening 1 a. The uppertemporary fixing grooves 1 b are used to temporarily fix thefan guard 5. Similarly, thefront panel 1 has lowertemporary fixing holes 1 c below theopening 1 a. The uppertemporary fixing grooves 1 b are disposed at bilaterally symmetric locations relative to the center at two portions to the right and left of theopening 1 a when thefront panel 1 is viewed from the front. The lowertemporary fixing holes 1 c are disposed likewise. -
FIG. 4 is an enlarged view of portion A inFIG. 3 and is an enlarged view of a portion around the uppertemporary fixing groove 1 b at the right upper side when thefront panel 1 is viewed from the front. A portion around the uppertemporary fixing groove 1 b at the left upper side when thefront panel 1 is viewed from the front has a similar structure to a structure bilaterally symmetric to the structure of the portion around the uppertemporary fixing groove 1 b ofFIG. 4 . As illustrated inFIG. 4 , the uppertemporary fixing groove 1 b smoothly connects with asurface 1 h of thefront panel 1 at right and leftedge portions 1 d, 1 e, and opens on the front of the casing. The right and leftedge portions 1 d, 1 e are connected in a cylindrical shape and recessed from thesurface 1 h toward the backside. The right and leftedge portions 1 d, 1 e form the uppertemporary fixing groove 1 b in a curved surface shape. The uppertemporary fixing groove 1 b is, for example, formed by plastically deforming an element such as a sheet metal that makes up thefront panel 1. -
FIG. 5 is an enlarged view of portion B inFIG. 3 and is an enlarged view of a portion around the lowertemporary fixing hole 1 c at the right lower side when thefront panel 1 is viewed from the front. A portion around the lowertemporary fixing hole 1 c at the left lower side when thefront panel 1 is viewed from the front has a similar structure to a structure bilaterally symmetric to the structure of the portion around the lowertemporary fixing hole 1 c ofFIG. 5 . As illustrated inFIG. 5 , the lowertemporary fixing hole 1 c is formed such that agroove 1 n that is long in an up and down direction and formed at thesurface 1 h of thefront panel 1 opens at its lower end. The lowertemporary fixing hole 1 c is made up of alower edge 1 p projecting forward and anupper edge 1 q recessed rearward. The lowertemporary fixing hole 1 c is oriented upward of thecasing 10 at its end. - <Configuration of
Fan Guard 5> -
FIG. 6 is a perspective view illustrating thefan guard 5 of theoutdoor unit 100 for an air-conditioning apparatus according to Embodiment. As illustrated inFIG. 6 , thefan guard 5 is made up of a combination of a plurality ofhorizontal bars 5 a and a plurality ofvertical bars 5 b. Thehorizontal bars 5 a and thevertical bars 5 b are made up of, for example, wire elements. A plurality of thehorizontal bars 5 a is disposed in the up and down direction at predetermined intervals, and each of thehorizontal bars 5 a is provided in the right and left direction. A plurality of thevertical bars 5 b is disposed in the right and left direction at predetermined intervals, and each of thevertical bars 5 b is provided in the up and down direction. Thehorizontal bars 5 a and thevertical bars 5 b are provided so as to intersect at right angles with each other. - The
vertical bars 5 b include firstvertical bars 51 b and secondvertical bars 52 b. The firstvertical bars 51 b are disposed at two portions located apart in the right and left direction of thecasing 10. The secondvertical bars 52 b are disposed at two portions located apart in the right and left direction of thecasing 10 and located closer to the center than the firstvertical bars 51 b. - Each of the first
vertical bars 51 b has anupper anchoring portion 51b 2. Theupper anchoring portion 51b 2 is bent toward thecasing 10 at its upper end, and then the distal end portion of theupper anchoring portion 51b 2 is bent upward. In addition, each of the firstvertical bars 51 b has alower anchoring portion 51b 5 at its lower end. Thelower anchoring portion 51b 5 is bent toward thecasing 10, and then a lower anchoringdistal end portion 51 b 4 that is the distal end portion of thelower anchoring portion 51b 5 is bent downward. - Each of the second
vertical bars 52 b has acontact portion 52b 3 at its upper end and acontact portion 52b 3 at its lower end. Thecontact portion 52b 3 is bent toward thecasing 10, and the distal end of thecontact portion 52b 3 is oriented at an angle close to a direction perpendicular to thesurface 1 h of thefront panel 1. - Numbers of the
horizontal bars 5 a andvertical bars 5 b are not limited to the specific numbers illustrated in the drawings. The locations of the firstvertical bars 51 b and the secondvertical bars 52 b are also not limited to the illustrated locations. The number of locations of the firstvertical bars 51 b is not limited to two, and may be one at the center or three or more in the right and left direction of thecasing 10. The number of locations of the secondvertical bars 52 b is also not limited to two, and may be one at the center or may be three or more. However, it is desirable that the firstvertical bars 51 b and the secondvertical bars 52 b both be disposed equally in the right and left direction relative to the center of thefan guard 5. Thefan guard 5 may be made up of resin, not metal wires. -
FIG. 7 is an enlarged view of a portion around thelower anchoring portion 51b 5 of thefan guard 5 of theoutdoor unit 100 for an air-conditioning apparatus according to Embodiment.FIG. 8 is a schematic sectional view along the line C-C inFIG. 7 and illustrates a section in the front and rear direction of thecasing 10 so as to pass through the center of the lowertemporary fixing hole 1 c. InFIG. 8 , the portion indicated by the dashed line represents thecontact portion 52b 3 located on the far side of the firstvertical bar 51 b. - As illustrated in
FIG. 7 andFIG. 8 , thelower anchoring portion 51b 5 is inserted in the lowertemporary fixing hole 1 c of thefront panel 1, the distal end-side lower anchoringdistal end portion 51 b 4 is located inside thecasing 10 and is parallel to thesurface 1 h of thefront panel 1. The lower anchoringdistal end portion 51 b 4 is located rearward of thelower edge 1 p of the lowertemporary fixing hole 1 c and forward of theupper edge 1 q. Movement of thefan guard 5 in the forward direction of thecasing 10 is restricted by contact between the lower anchoringdistal end portion 51 b 4 and thelower edge 1 p. At this time, a force directed from thecasing 10 toward thefan guard 5 acts on the lower anchoringdistal end portion 51 b 4. - As indicated by the dashed line in
FIG. 8 , thecontact portion 52b 3 is provided at the lower end of the secondvertical bar 52 b. Thecontact portion 52b 3 contacts with thesurface 1 h of thefront panel 1, and restricts movement of thefan guard 5 in the rearward direction. With thecontact portion 52b 3, a force directed from thefan guard 5 toward thecasing 10 acts. The force that is applied to thefan guard 5 by contact of thecontact portion 52b 3 with thecasing 10 is opposite to the force that is applied to thefan guard 5 by contact of the lower anchoringdistal end portion 51 b 4 with thecasing 10. -
FIG. 9 is an enlarged view of a portion around theupper anchoring portion 5b 2 in a state where thetop panel 3 of theoutdoor unit 100 for an air-conditioning apparatus according to Embodiment is detached.FIG. 10 is an enlarged view of a portion around theupper anchoring portion 51b 2 in a state where thetop panel 3 of theoutdoor unit 100 according to Embodiment is attached. As illustrated inFIG. 9 andFIG. 10 , theupper anchoring portion 51b 2 of thefan guard 5 is plugged in the uppertemporary fixing groove 1 b formed in thefront panel 1. Theupper anchoring portion 51b 2 is covered with the sideperipheral portion 3 a of thetop panel 3 placed above. -
FIG. 11 is a schematic sectional view along the line D-D inFIG. 9 . The D-D section is a section of thecasing 10, in the right and left direction, and is a section passing through the center of the uppertemporary fixing groove 1 b.FIG. 12 is a schematic sectional view along the line E-E inFIG. 10 . The E-E section is a section of thecasing 10, in the front and rear direction, and is a section passing through the center of the uppertemporary fixing groove 1 b. - As illustrated in
FIG. 11 andFIG. 12 , theupper anchoring portion 51b 2 is press-fitted in the uppertemporary fixing groove 1 b, and is sandwiched by the sideperipheral portion 3 a of thetop panel 3 and thesurface 1 h of thefront panel 1. The uppertemporary fixing groove 1 b is formed so as to have a width equal to the diameter of the wire of theupper anchoring portion 51b 2, and restricts movement of theupper anchoring portion 51b 2 in the right and left direction. The width of the uppertemporary fixing groove 1 b only needs to be selected as appropriate so that theupper anchoring portion 51b 2 can be held. With the width less than the diameter of the wire, theupper anchoring portion 51b 2 is further securely held. - The upper
temporary fixing groove 1 b is formed so as to have a depth equal to the diameter of the wire of theupper anchoring portion 51b 2, and restricts movement, in the front and rear direction, of theupper anchoring portion 51b 2 sandwiched by the sideperipheral portion 3 a of thetop panel 3 and thesurface 1 h of thefront panel 1. A portion of theupper anchoring portion 51b 2, being exposed from the opening of the uppertemporary fixing groove 1 b, is pressed by the sideperipheral portion 3 a of thetop panel 3, and movement of theupper anchoring portion 51b 2 in the forward direction is restricted. Movement of theupper anchoring portion 51b 2 in the rearward direction is restricted by the uppertemporary fixing groove 1 b having a shape recessed toward the backside. The depth of the uppertemporary fixing groove 1 b only needs to be a depth that allows theupper anchoring portion 51b 2 to be sandwiched by the sideperipheral portion 3 a of thetop panel 3 and thesurface 1 h of thefront panel 1, and may be less than the diameter of the wire. - Since the
upper anchoring portion 51b 2 is press-fitted in the uppertemporary fixing groove 1 b, movement of thefan guard 5 in the right and left direction is restricted. Since theupper anchoring portion 51b 2 is sandwiched by thefront panel 1 and thetop panel 3, movement of thefan guard 5 in the front and rear direction is restricted. Therefore, movement of thefan guard 5 due to vibrations during operation of the air-conditioning apparatus is prevented, and thus generation of noise is suppressed. - <Procedure to Attach
Fan Guard 5> - The
fan guard 5 is attached before thetop panel 3 is attached to thecasing 10. - First, in a position in which the
upper anchoring portions 51b 2 of thefan guard 5 are placed above and thelower anchoring portions 51b 5 are placed below, thefan guard 5 is located in front of thefront panel 1. At this time, thefan guard 5 is inclined by tilting the upper ends of theupper anchoring portions 51b 2 forward of thecasing 10. After that, the lower anchoringdistal end portions 51 b 4 of thelower anchoring portions 51b 5 are brought close to the lower portion of thefront panel 1 and inserted into the lowertemporary fixing holes 1 c formed in thefront panel 1, and thelower anchoring portions 51b 5 are engaged with the lowertemporary fixing holes 1 c. - Subsequently, about the
lower anchoring portions 51b 5, thefan guard 5 is pivoted in a direction in which the upper ends of theupper anchoring portions 51b 2 are brought closer to the upper portion of thefront panel 1. Then, theupper anchoring portions 51b 2 are moved to the locations of the uppertemporary fixing grooves 1 b formed in thefront panel 1. At this time, thelower anchoring portions 51b 5 contact with thelower edges 1 p of the lowertemporary fixing holes 1 c, and movement of thelower anchoring portions 51b 5 in the front and rear direction and in the downward direction is restricted. Therefore, theupper anchoring portions 51b 2 move along predetermined trajectories and reliably reach the locations of the uppertemporary fixing grooves 1 b. - Subsequently, the
upper anchoring portions 51b 2 are pushed in toward thefront panel 1 while being caused to contact with thelower edges 1 p of the uppertemporary fixing grooves 1 b, and fitted into the uppertemporary fixing grooves 1 b. Thus, theupper anchoring portions 51b 2 are engaged with the uppertemporary fixing grooves 1 b. It is desirable that thelower edges 1 p of the uppertemporary fixing grooves 1 b have a curved surface 1 f. This is because, when thelower edges 1 p have the curved surfaces 1 f, theupper anchoring portions 51b 2 move along the curved surfaces 1 f and easily engage with the uppertemporary fixing grooves 1 b. - The
upper anchoring portions 51 b 2 and thelower anchoring portions 51b 5 of thefan guard 5 are respectively engaged with the uppertemporary fixing grooves 1 b and the lowertemporary fixing holes 1 c, and thefan guard 5 is preliminarily fixed at a predetermined location of thecasing 10. Thus, thefan guard 5 is temporarily fixed. - In a state where the
fan guard 5 is temporarily fixed, theupper anchoring portions 51b 2 are inserted in the uppertemporary fixing grooves 1 b, and movement of thefan guard 5 in the front and rear direction and in the right and left direction is restricted. In addition, theupper anchoring portions 51b 2 of thefan guard 5 are press-fitted in the uppertemporary fixing grooves 1 b. Therefore, thefan guard 5 does not fall forward of thecasing 10, and thefan guard 5 is kept attached to thecasing 10. Hence, a worker does not need to hold thefan guard 5. - Finally, the
top panel 3 is disposed on thecasing 10 to which thefan guard 5 is temporarily fixed, and the four sideperipheral portions 3 a of thetop panel 3 are fitted to the upper portion of thecasing 10. Thus, thetop panel 3 is placed to cover thecasing 10. In this manner, theupper anchoring portions 51b 2 of thefan guard 5 are sandwiched by the sideperipheral portion 3 a of thetop panel 3 and thesurface 1 h of thefront panel 1. Thus, thefan guard 5 is fixed to thecasing 10. Attachment of thefan guard 5 completes. - Since the
fan guard 5 is firmly fixed by thetop panel 3, a forward drop-off of thefan guard 5 at the time when a large impact acts on thecasing 10 is reduced. In addition, movement of theupper anchoring portions 51 b 2 and thelower anchoring portions 51b 5 of thefan guard 5 in the front and rear direction and in the right and left direction is restricted, thus vibrations during operation are reduced, and noise due to vibrations is reduced. Furthermore, since thefan guard 5 is fixed by disposing thetop panel 3 through clearance above thecasing 10 and placing thetop panel 3 to cover thecasing 10, space required for attachment is reduced. In addition, fastening with a screw is not required, and therefore attachment is facilitated. - At the time of detaching the
fan guard 5, thetop panel 3 is detached, and thefan guard 5 is placed in a temporary fixed state. Then, theupper anchoring portions 51b 2 are pulled out from the uppertemporary fixing grooves 1 b, the upper end of thefan guard 5 is pivoted in a direction to move forward, and then thefan guard 5 is raised upward to pull thelower anchoring portions 51b 5 out from the lowertemporary fixing holes 1 c. Thus, detaching of thefan guard 5 completes. - In this case as well, no tool or other devices to release a screw are required. Even after the
fan guard 5 is fixed, thefan guard 5 is kept in a temporarily fixed state unless thefan guard 5 is pulled out from the uppertemporary fixing grooves 1 b, and therefore a worker does not need to hold thefan guard 5. Therefore, in detaching of thefan guard 5 as well, improvement in workability is expected. - In the above description, the
upper anchoring portion 51 b 2 and thelower anchoring portion 51b 5 both are provided in the firstvertical bar 51 b. Instead, theupper anchoring portion 51 b 2 and thelower anchoring portion 51b 5 may be respectively provided in different vertical bars. It is desirable that each of the set ofupper anchoring portions 51 b 2 and the set oflower anchoring portions 51b 5 be provided at bilaterally symmetric locations. This is because, with this configuration, forces that act on thefan guard 5 reach equilibrium. Furthermore, theupper anchoring portion 51b 2 may be provided at least in one vertical bar located at the center. - <Modification>
-
FIG. 13 is a schematic view illustrating theoutdoor unit 100 for an air-conditioning apparatus according to a modification of Embodiment, and corresponds to a schematic sectional view along the line D-D inFIG. 9 in Embodiment. Theoutdoor unit 100 for an air-conditioning apparatus according to the modification includesprotrusions 11b 2 formed in the uppertemporary fixing groove 11 b of thefront panel 1. InFIG. 13 , the D-D section is a section of thecasing 10, in the right and left direction, and is a section passing through the center of the uppertemporary fixing groove 11 b. - As illustrated in
FIG. 13 , in the modification, the uppertemporary fixing groove 11 b has theprotrusions 11b 2 formed at the front side. Each of theprotrusions 11b 2 is formed at the edge of the recessed shape of the uppertemporary fixing groove 11 b along, for example, part of the uppertemporary fixing groove 11 b in a longitudinal direction or aridge 11b 1 of the edge. The diameter of a circle drawn by aninner wall surface 1b 3 of the uppertemporary fixing groove 11 b and tangents of theprotrusions 11b 2 is equal to the diameter of theupper anchoring portion 51b 2. - When the
upper anchoring portion 51b 2 is press-fitted into the uppertemporary fixing groove 11 b, theupper anchoring portion 51b 2 is held by theprotrusions 11b 2, and movement in the right and left direction and in the forward direction is restricted. With the thus configuredprotrusions 11b 2, theupper anchoring portion 51b 2 is prevented from coming off from the uppertemporary fixing groove 11 b. In addition, for example, even when theoutdoor unit 100 is manufactured without dimensional control for press-fitting, theupper anchoring portion 51b 2 is held, and movement in the right and left direction and in the front and rear direction due to vibrations is restricted. - With the above-described
outdoor unit 100 for an air-conditioning apparatus according to Embodiment, theupper anchoring portions 51 b 2 andlower anchoring portions 51b 5 of thefan guard 5 are inserted into the uppertemporary fixing grooves 1 b and lowertemporary fixing holes 1 c of thefront panel 1, and thefan guard 5 is temporarily fixed to thecasing 10. Then, when thetop panel 3 is placed on thecasing 10 to which thefan guard 5 is temporarily fixed, thefan guard 5 is fixed. In a temporarily fixed state, movement of theupper anchoring portions 51b 2 in the up and down direction is restricted by the uppertemporary fixing grooves 1 b, and movement of thelower anchoring portions 51b 5 in the up and down direction and in the front and rear direction is restricted by the lowertemporary fixing holes 1 c. Therefore, a worker is not required to hold thefan guard 5. In addition, in a fixed state, movement of theupper anchoring portions 51b 2 in the front and rear direction is restricted by thetop panel 3 and thefront panel 1. Therefore, vibrations during operation are reduced, so noise is reduced. In a temporarily fixed state or in a fixed state, since no fastening with a screw is required, attachment is facilitated, and workability of attaching and detaching of thefan guard 5 improves. Since thecasing 10 is fixed when thetop panel 3 is placed to cover thecasing 10, work space to be ensured above thecasing 10 may be small. Since thefan guard 5 is fixed in a temporarily fixed state, thefan guard 5 also does not need to be held at the time of detaching thefan guard 5. - The upper
temporary fixing groove 1 b is an opening that opens on the front of the casing, and allows theupper anchoring portion 51b 2 to be inserted therein when theupper anchoring portion 51b 2 is pushed in. Therefore, attachment is facilitated, and a member, such as a screw, that needs to be fixed is not required. - Since the upper
temporary fixing groove 1 b has a cylindrical shape, theupper anchoring portion 51b 2 that has moved along the curved surface 1 f can reach the uppertemporary fixing groove 1 b and engage with the uppertemporary fixing groove 1 b. - By allowing the width of the upper
temporary fixing groove 1 b to be equal to or less than the diameter of theupper anchoring portion 51b 2, movement of theupper anchoring portion 51b 2 press-fitted in the uppertemporary fixing groove 1 b, in the right and left direction can be restricted, and theupper anchoring portion 51b 2 can be held. - With the
protrusions 11b 2 of the uppertemporary fixing groove 11 b, theupper anchoring portion 51b 2 is prevented from coming off from the uppertemporary fixing groove 11 b. In addition, even when theoutdoor unit 100 is manufactured without dimensional control for press-fitting, theupper anchoring portion 51b 2 is held, and movement of theupper anchoring portion 51b 2 in the right and left direction and in the front and rear direction due to vibrations is restricted. - Since the lower
temporary fixing holes 1 c open upward and thelower anchoring portions 51b 5 are inserted in the lowertemporary fixing holes 1 c, thelower anchoring portions 51b 5 contact with the lowertemporary fixing holes 1 c when thelower anchoring portions 51b 5 move, and movement of thefan guard 5 in the front and rear direction and in the right and left direction is restricted. - With the
lower edge 1 p located at a further front side than theupper edge 1 q of the lowertemporary fixing hole 1 c, thelower anchoring portion 51b 5 contacts with thelower edge 1 p when thelower anchoring portion 51b 5 moves forward, and movement of thelower anchoring portion 51b 5 in the forward direction is restricted. - The
contact portions 52 b 3 and lower anchoringdistal end portions 51 b 4 of thefan guard 5 contact with thecasing 10, and apply opposite forces to thefan guard 5. Therefore, movement of thefan guard 5 in the forward direction is restricted by thecontact portions 52b 3, movement of thefan guard 5 in the rearward direction is restricted by thelower anchoring portions 51b 5, and movement of thefan guard 5 due to vibrations is reduced. - 1
front panel 1 aopening 1 b uppertemporary fixing groove 1b 3inner wall surface 1 c lowertemporary fixing hole 1 d, 1 e edge portion 1 f curvedsurface 1h surface 1n groove 1 plower edge 1 qupper edge 2side panel 3top panel 3 a side peripheral portion 4fan 5fan guard 5 ahorizontal bar 5 bvertical bar 6 back panel 6 aair inlet 7 fixingmember motor 10casing 11 b uppertemporary fixing groove 11b 1ridge 11b 2protrusion 15heat exchanger 51 b firstvertical bar 51b 2upper anchoring portion 51 b 4 lower anchoringdistal end portion 51b 5lower anchoring portion 52 b secondvertical bar 52b 3contact portion 100 outdoor unit
Claims (8)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2017/006908 WO2018154686A1 (en) | 2017-02-23 | 2017-02-23 | Outdoor unit for air conditioner |
Publications (1)
Publication Number | Publication Date |
---|---|
US20190368753A1 true US20190368753A1 (en) | 2019-12-05 |
Family
ID=63252457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/466,664 Abandoned US20190368753A1 (en) | 2017-02-23 | 2017-02-23 | Outdoor unit for air-conditioning apparatus |
Country Status (5)
Country | Link |
---|---|
US (1) | US20190368753A1 (en) |
EP (1) | EP3587941B1 (en) |
JP (1) | JP6808013B2 (en) |
CN (1) | CN110291333A (en) |
WO (1) | WO2018154686A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6949247B2 (en) * | 2018-11-08 | 2021-10-13 | 三菱電機株式会社 | Outdoor unit of air conditioner |
WO2021111618A1 (en) * | 2019-12-06 | 2021-06-10 | 三菱電機株式会社 | Outdoor unit for air conditioner |
WO2023181225A1 (en) * | 2022-03-24 | 2023-09-28 | 三菱電機株式会社 | Outdoor unit and refrigeration cycle device |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01189438A (en) * | 1988-01-25 | 1989-07-28 | Matsushita Seiko Co Ltd | Blade guard fixing device for air-conditioning machine |
JPH02114826U (en) * | 1989-02-21 | 1990-09-13 | ||
JPH0510918U (en) * | 1991-07-22 | 1993-02-12 | 株式会社富士通ゼネラル | Outdoor unit fan guard mounting structure |
JP3189263B2 (en) * | 1994-11-01 | 2001-07-16 | 船井電機株式会社 | Outdoor unit heat exchanger protection device |
US5575622A (en) * | 1994-12-16 | 1996-11-19 | Staco, Inc. | Method and apparatus for mounting a fan guard |
JP2000039186A (en) | 1998-07-24 | 2000-02-08 | Mitsubishi Heavy Ind Ltd | Outdoor machine unit and air conditioner |
JP5289200B2 (en) * | 2009-06-19 | 2013-09-11 | 三菱電機株式会社 | Air conditioner outdoor unit |
DE102012020245B4 (en) * | 2012-10-11 | 2015-01-15 | Uwe Stadtmüller | guard |
JP6041136B2 (en) * | 2012-12-28 | 2016-12-07 | パナソニックIpマネジメント株式会社 | Flat fan guard and outdoor unit |
JP5984760B2 (en) * | 2013-08-08 | 2016-09-06 | 三菱電機株式会社 | Air conditioner outdoor unit |
-
2017
- 2017-02-23 WO PCT/JP2017/006908 patent/WO2018154686A1/en unknown
- 2017-02-23 US US16/466,664 patent/US20190368753A1/en not_active Abandoned
- 2017-02-23 JP JP2019500930A patent/JP6808013B2/en active Active
- 2017-02-23 EP EP17897333.5A patent/EP3587941B1/en active Active
- 2017-02-23 CN CN201780079594.1A patent/CN110291333A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JPWO2018154686A1 (en) | 2019-11-07 |
CN110291333A (en) | 2019-09-27 |
WO2018154686A1 (en) | 2018-08-30 |
EP3587941A1 (en) | 2020-01-01 |
EP3587941A4 (en) | 2020-03-04 |
JP6808013B2 (en) | 2021-01-06 |
EP3587941B1 (en) | 2022-12-28 |
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