WO2019163177A1 - Outdoor unit for air conditioners - Google Patents

Outdoor unit for air conditioners Download PDF

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Publication number
WO2019163177A1
WO2019163177A1 PCT/JP2018/034630 JP2018034630W WO2019163177A1 WO 2019163177 A1 WO2019163177 A1 WO 2019163177A1 JP 2018034630 W JP2018034630 W JP 2018034630W WO 2019163177 A1 WO2019163177 A1 WO 2019163177A1
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WO
WIPO (PCT)
Prior art keywords
fan
outdoor unit
test finger
front surface
fan guard
Prior art date
Application number
PCT/JP2018/034630
Other languages
French (fr)
Japanese (ja)
Inventor
隆之 柳生
Original Assignee
シャープ株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Publication of WO2019163177A1 publication Critical patent/WO2019163177A1/en

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Classifications

    • 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

Definitions

  • One embodiment of the present invention relates to an outdoor unit of an air conditioner including a fan and a fan guard.
  • the present application claims priority based on Japanese Patent Application No. 2018-028226 filed in Japan on February 20, 2018, the contents of which are incorporated herein by reference.
  • the outdoor unit of the air conditioner has a fan that blows out air inside the housing, as disclosed in Patent Documents 1 and 2.
  • the housing is formed with an air outlet, which is an opening, in the front portion of the fan, and a fan guard is attached to the air outlet.
  • the crosspieces are arranged in a lattice shape in order to prevent foreign matter from entering the air outlet and not to prevent the air from being blown out.
  • the predetermined test finger should not touch the fan.
  • the pitch of the crosspiece is set so that fingers do not enter.
  • the crosspiece prevents air from being blown out.
  • the front surface of the fan guard facing the air outlet can be inserted with a test finger, and the height of the front surface of the fan guard from the fan can reach the fan. There is no height. Further, the test finger cannot be inserted into the side surface portion of the fan guard.
  • the outdoor unit of the air conditioner described in Patent Document 2 has a shape in which the entire front portion of the fan guard protrudes at a certain height position with respect to the outer surface of the housing, and thus the volume of the entire outdoor unit is large. It has become larger.
  • an outdoor unit for an air conditioner that can suppress the fan guard from protruding from the outer surface of the housing while suppressing a decrease in the blowing performance, thereby suppressing an increase in size.
  • An outdoor unit of an air conditioner is provided with a fan, which is a propeller fan, in a housing, and an air outlet opening in the front surface of the housing is a front portion facing the fan.
  • the fan guard is provided on the front portion with a protruding portion and an outer portion facing the inner portion in the radial direction of the fan.
  • the protrusion can insert a test finger, and the shortest distance between the front surface of the protrusion and the fan is longer than the test finger.
  • the height from the front surface of the housing gradually decreases toward the outer peripheral side end.
  • the present invention it is possible to suppress the protrusion of the fan guard with respect to the outer surface of the housing while suppressing the deterioration of the air blowing performance, thereby suppressing the increase in the size of the outdoor unit.
  • FIG. 4 is a front view of the fan shown in FIG. 3. It is a front view which shows the test finger for adults with respect to the outdoor unit shown in FIG. It is a longitudinal cross-sectional view which shows the outdoor unit of the air conditioner of other embodiment of this invention. It is a front view which shows the test finger for children with respect to the outdoor unit shown in FIG. It is a longitudinal cross-sectional view which shows the outdoor unit of the air conditioner of further another embodiment of this invention.
  • FIG. 1 is a perspective view showing an outdoor unit (hereinafter simply referred to as an outdoor unit) of the air conditioner of the present embodiment
  • FIG. 2 is a front view of the outdoor unit shown in FIG. 1
  • FIG. 3 is an outdoor unit shown in FIG.
  • FIG. 4 is a front view of the fan shown in FIG.
  • the outdoor unit 1 includes a housing 11 and a fan guard 12. Further, as shown in FIG. 3, a fan 13, a fan motor 14, and a heat exchanger are provided inside the housing 11. 15 is provided.
  • the housing 11 has an air outlet 11 a that is an opening having a diameter larger than the outer diameter of the fan 13, and the fan 13 is provided at the position of the air outlet 11 a inside the housing 11.
  • the fan motor 14 is attached to a motor angle 16 fixed inside the housing 11 and rotates the fan 13.
  • the fan 13 is a propeller fan, which has, for example, three blades, and is a protrusion that protrudes forward around the center and the outer periphery.
  • the protrusion around the central portion is referred to as a central protrusion 13a
  • the protrusion at the outer peripheral portion is referred to as an outer peripheral protrusion 13b.
  • the outer peripheral protruding portion 13 b protrudes further forward than the central protruding portion 13 a and is the portion protruding most forward in the fan 13.
  • the fan 13 has a shape in which the outer peripheral portion protrudes most forward in this way, so that the wind can be blown out efficiently.
  • the fan 13 has the following advantages by having the shape shown in FIG.
  • the fan 13 is formed with the cut portion toward the front edge portion, so that the blade tip vortex and the horseshoe vortex generated by the rotation are captured and held by the cut portion.
  • fluctuation and development of the wing tip vortex and horseshoe vortex can be suppressed, and interference between these vortex and bellmouth or wing can also be suppressed.
  • generation of noise can be suppressed.
  • peeling can be prevented by pouring the energy of the held wing tip vortex and horseshoe vortex into the peeling region on the wing surface. Thereby, air volume increases and it can blow with high efficiency.
  • the fan guard 12 corresponds to the shape of the air outlet 11 a of the housing 11, and is formed in a circular shape when viewed from the front as shown in FIG. 2, and the outer peripheral portion is fixed to the front surface 11 b of the housing 11.
  • the fan guard 12 has a protruding portion 31 a, an inclined portion (outer peripheral portion) 31 b, and a non-opening portion 31 c on the front surface portion 31 facing the fan 13.
  • the inclined portion 31 b is a circular annular region facing the outer peripheral portion of the fan 13.
  • the protruding portion 31 a is a region on the inner side of the inclined portion 31 b and is a circular annular region that faces the center side portion of the outer peripheral portion of the fan 13.
  • the crosspieces 12a are formed concentrically and radially, and an opening is formed between the adjacent crosspieces 12a.
  • the non-opening 31c is a non-opening circular region that faces the center of the fan 13 and does not allow air to pass through, and is located at the center of the protrusion 31a.
  • the front surface of the protruding portion 31 a is perpendicular to the bottom surface of the housing 11.
  • the inclined portion 31b is inclined toward the front surface 11b of the housing 11 so that the distance between the fan guard 12 and the front surface 11b of the housing 11 is shortened toward the outer peripheral side end portion of the fan guard 12. .
  • the length of the side part 32 is very short.
  • the height of the outermost peripheral portion of the inclined portion 31 b with respect to the front surface 11 b of the housing 11 is much lower than the height of the front surface of the protruding portion 31 a with respect to the front surface 11 b of the housing 11.
  • the inclined portion 31 b is inclined linearly toward the front surface 11 b of the housing 11.
  • the side surface portion 32 of the fan guard 12 serves as an attachment portion for the front surface 11b of the housing 11, and the crosspiece 12a is formed in a shape extending in the front-rear direction of the outdoor unit 1.
  • FIG. 5 is a front view showing the adult test finger 21 for the outdoor unit 1.
  • the adult test finger 21 is assumed to be an adult finger. Note that the dimensions of the adult test finger 21 described in FIG. 5 are for a specific standard and are an example.
  • the pitch of the crosspieces 12a of the protruding portion 31a of the front surface portion 31 is a pitch at which the adult test finger (test finger) 21 can be inserted.
  • the pitch of the inclined portion 31b of the front surface portion 31 and the crosspiece 12a of the side surface portion 32 is shorter than the pitch of the crosspiece 12a of the protruding portion 31a, and is a pitch at which the adult test finger 21 cannot be inserted.
  • the distance Ha1 between the front surface of the protrusion 31a and the central protrusion 13a of the fan 13 in the direction perpendicular to the front surface of the protrusion 31a is longer than that of the adult test finger 21.
  • the distance Ha2 between the front surface of the protrusion 31a and the outer peripheral protrusion 13b of the fan 13 in the direction perpendicular to the front surface of the protrusion 31a is shorter than the distance Ha1.
  • the distance between the front surface of the inclined portion 31b and the outer peripheral protruding portion 13b of the fan 13 is larger than the distance Ha2. It is even shorter.
  • the distance between the front surface of the inclined portion 31b and the fan 13 is shorter than the length of the adult test finger 21 depending on the position of the inclined portion 31b.
  • a region of the fan guard 12 provided so as to protrude from the outer surface of the housing 11 is opposed to the outer peripheral portion of the fan 13 as an inclined portion 31b inclined toward the outer surface of the housing 11. Yes. That is, the inclination part 31b which is an outer peripheral part of the fan guard 12 is gradually lowered from the front surface 11b of the housing 11 toward the outer peripheral side end part.
  • the outdoor unit 1 can suppress the protrusion of the fan guard 12 from the outer surface (front surface 11b) of the housing
  • the fan guard 12 has an inclined portion 31b around the protruding portion 31a, so that a good design is achieved.
  • the outdoor unit 1 reduces the air blowing performance by setting the pitch of the crosspieces 12a of the protruding portion 31a, which is an area inside the inclined portion 31b, of the fan guard 12 to a pitch at which the adult test finger 21 can be inserted. Can be suppressed.
  • the outdoor unit 1 sets the pitch of the crosspiece 12a of the inclined portion 31b where the distance between the fan guard 12 and the fan 13 is short so that the adult test finger 21 cannot be inserted, and the front surface of the protruding portion 31a and the fan 13
  • the distance Ha1 (the shortest distance between the front surface of the protrusion 31a and the fan 13) is longer than that of the adult test finger 21. Thereby, safety can be ensured.
  • the outdoor unit 1 can suppress the protrusion of the fan guard 12 with respect to the outer surface of the housing 11 while suppressing a decrease in the air blowing performance, thereby suppressing an increase in size.
  • the crosspiece 12a of the side surface portion 32 is usually only the crosspiece 12a extending in the front-rear direction of the outdoor unit 1 (the protruding direction of the fanguard 12).
  • the fan guard 12 of this embodiment has the inclined portion 31b, so that the length of the side surface portion 32 in the front-rear direction of the outdoor unit 1 is short, and the length of the crosspiece 12a of the side surface portion 32 is also short. . Therefore, in the side surface portion 32, it is easy to prevent a finger from entering even if the pitch of the crosspieces 12a is not extremely shortened, and thereby the blowing resistance in the side surface portion 32 can be reduced.
  • the entire front surface portion 31 becomes the protruding portion 31a.
  • the pitch of the crosspieces 12a of the front surface portion 31 is increased to the extent that the adult test finger 21 can be inserted in order to prevent the air blowing performance from being lowered, the adult test finger 21 inserted from the front surface portion 31 is connected to the fan 13.
  • the shape of the outdoor unit 1 including the fan guard 12 is increased.
  • the shape in which the fan guard 12 has the inclined portion 31b on the front surface portion 31 can cope with the suppression of the deterioration of the blowing performance of the outdoor unit 1 and the suppression of the enlargement of the outdoor unit 1. .
  • the pitch of the inclined portion 31b of the front surface portion 31 of the fan guard 12 and the crosspiece 12a of the side surface portion 32 is a pitch at which the adult test finger 21 cannot be inserted.
  • the pitch may be smaller than 21 and cannot be inserted with a child test finger (test finger) 22 described later.
  • FIG. 6 is a longitudinal sectional view of the outdoor unit of the present embodiment. As shown in FIG. 6, the outdoor unit 2 of the present embodiment includes a fan guard 41 instead of the fan guard 12 shown in FIG. 3.
  • the fan guard 41 has the same appearance as the fan guard 12 and includes a front surface portion 42, a protruding portion 42a, an inclined portion (outer peripheral portion) 42b, a non-opening portion 42c, and a side surface portion 43, as shown in FIG. .
  • the front surface portion 42, the protruding portion 42a, the inclined portion 42b and the non-opening portion 42c, and the side surface portion 43 are respectively the front surface portion 31, the protruding portion 31a, the inclined portion 31b, the non-opening portion 31c, and the side surface portion 32 of the fan guard 12.
  • the crosspiece 41 a corresponds to the crosspiece 12 a of the fan guard 12.
  • FIG. 7 is a front view showing the child test finger 22 for the outdoor unit 2.
  • the child test finger (test finger) 22 is assumed to be a child's finger, and is thinner and shorter than the adult test finger 21 shown in FIG.
  • toe 22 for children described in FIG. 7 is a thing about a specific specification, and is an example.
  • the pitch of the crosspiece 41a of the protruding portion 42a of the front surface portion 42 is such that the child test finger 22 can be inserted and the adult test finger 21 cannot be inserted.
  • the pitch of the inclined portion 42b of the front surface portion 42 and the crosspiece 41a of the side surface portion 43 is shorter than the pitch of the crosspiece 41a of the protruding portion 42a, so that the adult test finger 21 and the child test finger 22 cannot be inserted. Yes.
  • the distance Hb1 between the front surface of the protrusion 42a and the central protrusion 13a of the fan 13 in the direction perpendicular to the front surface of the protrusion 42a is longer than the test finger 22 for children and shorter than the test finger 21 for adults.
  • the distance Hb2 between the front surface of the protrusion 42a and the outer peripheral protrusion 13b of the fan 13 in the direction perpendicular to the front surface of the protrusion 42a is shorter than the distance Hb1.
  • the distance between the front surface of the inclined portion 42b and the outer peripheral protruding portion 13b of the fan 13 is larger than the distance Hb2. It is even shorter.
  • the fan guard 41 corresponds to the child test finger 22 in addition to the adult test finger 21, and is configured to enhance safety for adults and children.
  • the area facing the outer peripheral portion of the fan 13 of the fan guard 41 provided so as to protrude from the outer surface of the housing 11 is the same as the outdoor unit 1 described above.
  • the inclined portion 42b is inclined in the direction.
  • the outdoor unit 2 can suppress the protrusion of the fan guard 41 from the outer surface of the housing 11 and suppress the increase in size.
  • the fan guard 41 has an inclined portion 42b around the protruding portion 42a, so that the design is good.
  • the outdoor unit 2 suppresses the deterioration of the air blowing performance by setting the pitch of the crosspiece 41a of the protruding portion 42a at which the distance between the fan guard 41 and the fan 13 is close to the pitch at which the child test finger 22 can be inserted. be able to.
  • the outdoor unit 2 sets the pitch of the crosspiece 41a of the inclined portion 42b where the distance between the fan guard 41 and the fan 13 is short so that the adult test finger 21 and the child test finger 22 cannot be inserted, and the protrusion 42a
  • the distance Hb ⁇ b> 1 between the front surface and the fan 13 is longer than that of the child test finger 22. Thereby, safety can be ensured.
  • the outdoor unit 2 can suppress the protrusion of the fan guard 41 with respect to the outer surface of the housing 11 while suppressing the deterioration of the air blowing performance, thereby suppressing the increase in size.
  • FIG. 8 is a longitudinal sectional view of the outdoor unit of the present embodiment. As shown in FIG. 8, the outdoor unit 3 of this embodiment is provided with a fan guard 51 instead of the fan guard 12 shown in FIG.
  • the fan guard 51 of the outdoor unit 3 has an inclined part (outer peripheral part) 31 d different from the inclined part 31 b of the front part 31 of the fan guard 12 on the front part 31.
  • the inclined portion 31b of the fan guard 12 is linearly inclined, whereas the inclined portion 31d of the fan guard 51 is gently curved in a convex shape forward, while the front surface 11b of the housing 11 is bent. It is inclined toward.
  • the portion 31d is wider than the inclined portion 31b.
  • the blowing resistance at the inclined portion 31 d is smaller than the blowing resistance at the inclined portion 31 b, and the fan guard 51 has better blowing performance than the fan guard 12.
  • the fan guard 51 has a good design because the inclined portion 31d is gently curved in a convex shape forward.
  • the other advantages of the outdoor unit 3 by providing the fan guard 51 are the same as the advantages of the outdoor unit 1 by providing the fan guard 12. Further, when the configuration of the inclined portion 31 d of the fan guard 51 is applied to the inclined portion 42 b of the fan guard 41 of the outdoor unit 2, the outdoor unit 2 has the same advantages as the above-described advantages due to having the inclined portion 31 d of the outdoor unit 3. It has further.
  • a fan 13 that is a propeller fan is provided inside a casing 11, and an air outlet 11 a that is opened in a front surface 11 b of the casing 11 includes the fan 11.
  • the fan guard 12 is connected to the front surface portion 31 in the radial direction of the fan 13.
  • the shortest distance is longer than the test finger, and the outer peripheral portion cannot insert the test finger, and the height from the front surface 11b of the housing 11 gradually decreases toward the outer peripheral end.
  • the height of the outer periphery of the fan guard 12 from the front surface 11b of the housing 11 gradually decreases toward the outer peripheral end.
  • test finger can be inserted into the protruding portion 31a of the fan guard 12. That is, the opening formed in the protruding portion 31a has a width enough to insert the test finger. Thereby, the protrusion part 31a of the fan guard 12 has small ventilation resistance, and the outdoor unit can suppress the fall of ventilation performance.
  • the outdoor unit the shortest distance between the front surface of the protrusion 31a of the fan guard 12 and the fan 13 is longer than the test finger, and the test finger cannot be inserted into the outer periphery of the fan guard 12. Thereby, the outdoor unit can ensure safety.
  • the outdoor unit can suppress the protrusion of the fan guard 12 with respect to the outer surface of the housing 11 while suppressing the deterioration of the air blowing performance, thereby suppressing the increase in size.
  • An outdoor unit of an air conditioner according to aspect 2 of the present invention is the air conditioner outdoor unit according to aspect 1, wherein the test finger is a relatively long and thick adult test finger, and a relatively short and thin child.
  • the test finger may be a test finger for adults.
  • the outdoor unit can ensure safety for adults.
  • An outdoor unit of an air conditioner according to aspect 3 of the present invention is the air conditioner outdoor unit according to aspect 1, wherein the test finger is a relatively long and thick adult test finger, and a relatively short and thin child.
  • the test finger may be a child's test finger.
  • the ventilation performance is slightly lower than when the test finger is an adult test finger, but the outdoor unit ensures safety for adults and children. can do.
  • the outdoor unit of the air conditioner according to aspect 4 of the present invention is the air conditioner outdoor unit according to any one of the aspects 1 to 3, wherein the opening of the front part 31 of the fan guard 51 forms a plurality of front parts 31. It is good also as a structure which is formed between the crosspieces 12a, and the said outer peripheral part (inclined part 31d) of the said front-surface part 31 is curving convexly ahead.
  • the fan 13 blows wind obliquely forward, and the wind blown by the fan 13 is blown obliquely forward on the outer periphery of the fan guard 51.
  • the outer periphery of the fan guard 51 is convexly curved forward, the distance between the front end of one crosspiece 12a and the rear end of the crosspiece 12a adjacent to the crosspiece 12a is determined by the fan
  • the case where the outer peripheral portion is curved forward is wider than the case where it is inclined linearly, for example.
  • the fan guard 51 has a small blowing resistance at the outer peripheral portion, and the outdoor unit including the fan guard 51 has a good blowing performance.

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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

The fan guard of this outdoor unit has, on the front face part, a protrusion that faces the radially-inside part of a fan and a slope that faces the radially-outside part of the fan. The protrusion permits insertion of a test finger and the shortest distance between the front of the protrusion and the fan is longer than the test finger. The slope does not permit the insertion of the test finger, and decreases gradually in height toward the peripheral end part.

Description

空気調和機の室外機Air conditioner outdoor unit
　本発明の一態様は、ファンおよびファンガードを備えた空気調和機の室外機に関する。本願は、２０１８年２月２０日に、日本に出願された特願２０１８－０２８２２６号に基づき優先権を主張し、その内容をここに援用する。 One embodiment of the present invention relates to an outdoor unit of an air conditioner including a fan and a fan guard. The present application claims priority based on Japanese Patent Application No. 2018-028226 filed in Japan on February 20, 2018, the contents of which are incorporated herein by reference.
　空気調和機の室外機は、特許文献１および２に開示されているように、筐体の内部に、空気を吹き出すファンを有する。筐体には、ファンの正面部分に、開口部である空気吹出口が形成されており、その空気吹出口にはファンガードが取り付けられている。ファンガードは、空気吹出口への異物の侵入を防ぎ、かつ空気の吹出しを妨げないために、桟が格子状に配置されている。ファンガードの構造については、安全性を確保する観点から、所定の試験指がファンに触れないようにすることが法律上規定されている。 The outdoor unit of the air conditioner has a fan that blows out air inside the housing, as disclosed in Patent Documents 1 and 2. The housing is formed with an air outlet, which is an opening, in the front portion of the fan, and a fan guard is attached to the air outlet. In the fan guard, the crosspieces are arranged in a lattice shape in order to prevent foreign matter from entering the air outlet and not to prevent the air from being blown out. Regarding the structure of the fan guard, from the viewpoint of ensuring safety, it is stipulated that the predetermined test finger should not touch the fan.
　特許文献１に記載の構成では、桟のピッチを手指が入らない程度に設定している。しかしながら、このような構成では、桟が空気の吹出しを妨げることになる。 In the configuration described in Patent Document 1, the pitch of the crosspiece is set so that fingers do not enter. However, in such a configuration, the crosspiece prevents air from being blown out.
　そこで、特許文献２に記載の構成では、ファンガードの、空気吹出口と対向する前面部は、試験指を挿入可能とし、かつファンからのファンガードの前面の高さを試験指がファンに届かない高さとしている。また、ファンガードの側面部は、試験指を挿入不能としている。 Therefore, in the configuration described in Patent Document 2, the front surface of the fan guard facing the air outlet can be inserted with a test finger, and the height of the front surface of the fan guard from the fan can reach the fan. There is no height. Further, the test finger cannot be inserted into the side surface portion of the fan guard.
特許第６２２５９５３号Patent No. 6225953 特許第４６３１８８２号Patent No. 4631882
　しかしながら、特許文献２に記載の空気調和機の室外機は、ファンガードの前面部全体が筐体の外面に対して一定の高さ位置に突出した形状であるため、室外機全体の容積が大きくなり、大型化している。 However, the outdoor unit of the air conditioner described in Patent Document 2 has a shape in which the entire front portion of the fan guard protrudes at a certain height position with respect to the outer surface of the housing, and thus the volume of the entire outdoor unit is large. It has become larger.
　したがって、本発明の一態様は、送風性能の低下を抑制しながら、筐体の外面に対するファンガードの突出を抑制し、これによって大型化を抑制することができる空気調和機の室外機の提供を目的とする。 Therefore, according to one embodiment of the present invention, it is possible to provide an outdoor unit for an air conditioner that can suppress the fan guard from protruding from the outer surface of the housing while suppressing a decrease in the blowing performance, thereby suppressing an increase in size. Objective.
　本発明の一態様に係る空気調和機の室外機は、筐体の内部にプロペラファンであるファンが設けられ、前記筐体の前面に開口された空気吹出口が、前記ファンと対向する前面部に多数の開口部を有するファンガードにて覆われている空気調和機の室外機において、前記ファンガードは、前記前面部に、前記ファンの径方向の、内側部分と対向する突出部および外側部分と対向する外周部を有し、前記突出部は、試験指を挿入でき、かつ前記突出部の前面と前記ファンとの最短距離が前記試験指よりも長く、前記外周部は、前記試験指を挿入できず、かつ外周側端部に向かうにしたがって前記筐体の前記前面からの高さが漸次低くなっている。 An outdoor unit of an air conditioner according to an aspect of the present invention is provided with a fan, which is a propeller fan, in a housing, and an air outlet opening in the front surface of the housing is a front portion facing the fan. In the outdoor unit of an air conditioner covered with a fan guard having a large number of openings, the fan guard is provided on the front portion with a protruding portion and an outer portion facing the inner portion in the radial direction of the fan. And the protrusion can insert a test finger, and the shortest distance between the front surface of the protrusion and the fan is longer than the test finger. The height from the front surface of the housing gradually decreases toward the outer peripheral side end.
　本発明の一態様によれば、送風性能の低下を抑制しながら、筐体の外面に対するファンガードの突出を抑制し、これによって室外機の大型化を抑制することができる。 According to one aspect of the present invention, it is possible to suppress the protrusion of the fan guard with respect to the outer surface of the housing while suppressing the deterioration of the air blowing performance, thereby suppressing the increase in the size of the outdoor unit.
本発明の実施形態の空気調和機の室外機を示す斜視図である。It is a perspective view which shows the outdoor unit of the air conditioner of embodiment of this invention. 図１に示した室外機の正面図である。It is a front view of the outdoor unit shown in FIG. 図１に示した室外機の縦断面図である。It is a longitudinal cross-sectional view of the outdoor unit shown in FIG. 図３に示したファンの正面図である。FIG. 4 is a front view of the fan shown in FIG. 3. 図３に示した室外機に対する大人用試験指を示す正面図である。It is a front view which shows the test finger for adults with respect to the outdoor unit shown in FIG. 本発明の他の実施形態の空気調和機の室外機を示す縦断面図である。It is a longitudinal cross-sectional view which shows the outdoor unit of the air conditioner of other embodiment of this invention. 図６に示した室外機に対する子供用試験指を示す正面図である。It is a front view which shows the test finger for children with respect to the outdoor unit shown in FIG. 本発明のさらに他の実施形態の空気調和機の室外機を示す縦断面図である。It is a longitudinal cross-sectional view which shows the outdoor unit of the air conditioner of further another embodiment of this invention.
〔実施形態１〕
　以下、本発明の一実施形態について、詳細に説明する。図１は本実施形態の空気調和機の室外機（以下、単に室外機と称する）を示す斜視図、図２は図１に示した室外機の正面図、図３は図１に示した室外機の縦断面図、図４は図３に示したファンの正面図である。 Embodiment 1
Hereinafter, an embodiment of the present invention will be described in detail. 1 is a perspective view showing an outdoor unit (hereinafter simply referred to as an outdoor unit) of the air conditioner of the present embodiment, FIG. 2 is a front view of the outdoor unit shown in FIG. 1, and FIG. 3 is an outdoor unit shown in FIG. FIG. 4 is a front view of the fan shown in FIG.
（室外機１の概要）
　図１および図２に示すように、室外機１は、筐体１１およびファンガード１２を備え、さらに図３に示すように、筐体１１の内部に、ファン１３、ファンモータ１４および熱交換器１５を備えている。 (Outline of outdoor unit 1)
As shown in FIGS. 1 and 2, the outdoor unit 1 includes a housing 11 and a fan guard 12. Further, as shown in FIG. 3, a fan 13, a fan motor 14, and a heat exchanger are provided inside the housing 11. 15 is provided.
　筐体１１は、ファン１３の外径よりも大きい径の開口部である空気吹出口１１ａを有し、ファン１３は筐体１１の内部における空気吹出口１１ａの位置に設けられている。ファンモータ１４は、筐体１１の内部に固定されたモータアングル１６に取り付けられ、ファン１３を回転させる。 The housing 11 has an air outlet 11 a that is an opening having a diameter larger than the outer diameter of the fan 13, and the fan 13 is provided at the position of the air outlet 11 a inside the housing 11. The fan motor 14 is attached to a motor angle 16 fixed inside the housing 11 and rotates the fan 13.
（ファン１３の構成）
　ファン１３は、図３および図４に示すように、プロペラファンであり、例えば３枚羽根を有し、中心部の周りおよび外周部が前方へ突出した突出部となっている。以下では、中心部の周りの突出部を中央突出部１３ａと称し、外周部の突出部を外周突出部１３ｂと称する。外周突出部１３ｂは、中央突出部１３ａよりも前方へ突出しており、ファン１３において最も前方へ突出している部分である。ファン１３は、このように外周部が最も前方へ突出した形状を有することにより、風を効率よく吹き出すことができる。 (Configuration of fan 13)
As shown in FIGS. 3 and 4, the fan 13 is a propeller fan, which has, for example, three blades, and is a protrusion that protrudes forward around the center and the outer periphery. Hereinafter, the protrusion around the central portion is referred to as a central protrusion 13a, and the protrusion at the outer peripheral portion is referred to as an outer peripheral protrusion 13b. The outer peripheral protruding portion 13 b protrudes further forward than the central protruding portion 13 a and is the portion protruding most forward in the fan 13. The fan 13 has a shape in which the outer peripheral portion protrudes most forward in this way, so that the wind can be blown out efficiently.
　なお、ファン１３は、図４に示した形状を有することにより、次のような利点を有する。すなわち、ファン１３は、前縁部の側に向かって切込み部が形成されていることにより、回転によって生じる翼先端渦および馬蹄渦が切込み部に捉えられて保持される。これにより、翼先端渦および馬蹄渦の変動や発達を抑えることができるとともに、これらの渦とベルマウスや翼との干渉も抑制することができる。その結果、騒音の発生を抑制することができる。さらには、保持された翼先端渦および馬蹄渦のエネルギーを翼面上の剥離領域に注ぎ込むことで剥離を防ぐことができる。これにより、風量が増加して効率の高い送風を行なうことができる。 In addition, the fan 13 has the following advantages by having the shape shown in FIG. In other words, the fan 13 is formed with the cut portion toward the front edge portion, so that the blade tip vortex and the horseshoe vortex generated by the rotation are captured and held by the cut portion. As a result, fluctuation and development of the wing tip vortex and horseshoe vortex can be suppressed, and interference between these vortex and bellmouth or wing can also be suppressed. As a result, generation of noise can be suppressed. Furthermore, peeling can be prevented by pouring the energy of the held wing tip vortex and horseshoe vortex into the peeling region on the wing surface. Thereby, air volume increases and it can blow with high efficiency.
（ファンガード１２の構成の概要）
　ファンガード１２は、筐体１１の空気吹出口１１ａの形状に対応し、図２に示すように、正面から見て円形に形成され、外周部が筐体１１の前面１１ｂに固定されている。 (Outline of the configuration of the fan guard 12)
The fan guard 12 corresponds to the shape of the air outlet 11 a of the housing 11, and is formed in a circular shape when viewed from the front as shown in FIG. 2, and the outer peripheral portion is fixed to the front surface 11 b of the housing 11.
　ファンガード１２は、図３に示すように、ファン１３と対向する前面部３１に突出部３１ａ、傾斜部（外周部）３１ｂおよび非開口部３１ｃを有する。 As shown in FIG. 3, the fan guard 12 has a protruding portion 31 a, an inclined portion (outer peripheral portion) 31 b, and a non-opening portion 31 c on the front surface portion 31 facing the fan 13.
　傾斜部３１ｂはファン１３の外周部と対向する円形の環状領域である。突出部３１ａは、傾斜部３１ｂよりも内側の領域であり、ファン１３の外周部よりも中心側部分と対向している円形の環状領域である。突出部３１ａおよび傾斜部３１ｂでは、桟１２ａが同心円状および放射状に形成されており、隣り合う桟１２ａ同士の間は開口部となっている。非開口部３１ｃは、ファン１３の中心部と対向し、風が通らない非開口の円形の領域であり、突出部３１ａの中心部に位置する。 The inclined portion 31 b is a circular annular region facing the outer peripheral portion of the fan 13. The protruding portion 31 a is a region on the inner side of the inclined portion 31 b and is a circular annular region that faces the center side portion of the outer peripheral portion of the fan 13. In the protruding portion 31a and the inclined portion 31b, the crosspieces 12a are formed concentrically and radially, and an opening is formed between the adjacent crosspieces 12a. The non-opening 31c is a non-opening circular region that faces the center of the fan 13 and does not allow air to pass through, and is located at the center of the protrusion 31a.
　突出部３１ａの前面は、筐体１１の底面に対して垂直である。傾斜部３１ｂは、ファンガード１２の外周側端部に向うにしたがって、ファンガード１２と筐体１１の前面１１ｂとの距離が短くなるように、筐体１１の前面１１ｂに向って傾斜している。このように、ファンガード１２は、前面部３１の外周部に傾斜部３１ｂを有しているので、側面部３２の長さが非常に短くなっている。言い換えると、筐体１１の前面１１ｂに対する傾斜部３１ｂの最外周部の高さは、筐体１１の前面１１ｂに対する突出部３１ａの前面の高さよりも非常に低くなっている。本実施形態において、傾斜部３１ｂは直線状に筐体１１の前面１１ｂに向って傾斜している。 The front surface of the protruding portion 31 a is perpendicular to the bottom surface of the housing 11. The inclined portion 31b is inclined toward the front surface 11b of the housing 11 so that the distance between the fan guard 12 and the front surface 11b of the housing 11 is shortened toward the outer peripheral side end portion of the fan guard 12. . Thus, since the fan guard 12 has the inclined part 31b in the outer peripheral part of the front surface part 31, the length of the side part 32 is very short. In other words, the height of the outermost peripheral portion of the inclined portion 31 b with respect to the front surface 11 b of the housing 11 is much lower than the height of the front surface of the protruding portion 31 a with respect to the front surface 11 b of the housing 11. In the present embodiment, the inclined portion 31 b is inclined linearly toward the front surface 11 b of the housing 11.
　ファンガード１２の側面部３２は、筐体１１の前面１１ｂに対する取付部となり、桟１２ａが室外機１の前後方向に延びる形状に形成されている。 The side surface portion 32 of the fan guard 12 serves as an attachment portion for the front surface 11b of the housing 11, and the crosspiece 12a is formed in a shape extending in the front-rear direction of the outdoor unit 1.
　（ファンガード１２の構成の詳細）
　図５は、室外機１に対する大人用試験指２１を示す正面図である。大人用試験指２１は、大人の指を想定したものである。なお、図５に記載している大人用試験指２１の寸法は、特定の規格についてのものであり、一例である。 (Details of the configuration of the fan guard 12)
FIG. 5 is a front view showing the adult test finger 21 for the outdoor unit 1. The adult test finger 21 is assumed to be an adult finger. Note that the dimensions of the adult test finger 21 described in FIG. 5 are for a specific standard and are an example.
　ファンガード１２について、前面部３１の突出部３１ａの桟１２ａのピッチは、大人用試験指（試験指）２１を挿入できるピッチとなっている。一方、前面部３１の傾斜部３１ｂおよび側面部３２の桟１２ａのピッチは、突出部３１ａの桟１２ａのピッチよりも短く、大人用試験指２１を挿入できないピッチとなっている。 In the fan guard 12, the pitch of the crosspieces 12a of the protruding portion 31a of the front surface portion 31 is a pitch at which the adult test finger (test finger) 21 can be inserted. On the other hand, the pitch of the inclined portion 31b of the front surface portion 31 and the crosspiece 12a of the side surface portion 32 is shorter than the pitch of the crosspiece 12a of the protruding portion 31a, and is a pitch at which the adult test finger 21 cannot be inserted.
　突出部３１ａの前面に垂直な方向の、突出部３１ａの前面とファン１３の中央突出部１３ａとの距離Ｈａ１は、大人用試験指２１よりも長くなっている。また、突出部３１ａの前面に垂直な方向の、突出部３１ａの前面とファン１３の外周突出部１３ｂとの距離Ｈａ２は、距離Ｈａ１よりも短くなっている。また、傾斜部３１ｂの前面は、突出部３１ａの前面よりも後方へ退行するように傾斜しているので、傾斜部３１ｂの前面とファン１３の外周突出部１３ｂとの距離は、距離Ｈａ２よりもさらに短くなっている。また、傾斜部３１ｂの前面とファン１３との距離は、傾斜部３１ｂの位置によっては大人用試験指２１の長さよりも短くなっている。 The distance Ha1 between the front surface of the protrusion 31a and the central protrusion 13a of the fan 13 in the direction perpendicular to the front surface of the protrusion 31a is longer than that of the adult test finger 21. The distance Ha2 between the front surface of the protrusion 31a and the outer peripheral protrusion 13b of the fan 13 in the direction perpendicular to the front surface of the protrusion 31a is shorter than the distance Ha1. Further, since the front surface of the inclined portion 31b is inclined so as to retract backward from the front surface of the protruding portion 31a, the distance between the front surface of the inclined portion 31b and the outer peripheral protruding portion 13b of the fan 13 is larger than the distance Ha2. It is even shorter. The distance between the front surface of the inclined portion 31b and the fan 13 is shorter than the length of the adult test finger 21 depending on the position of the inclined portion 31b.
（室外機１の利点）
　本実施形態の室外機１は、筐体１１の外面から突出するように設けられたファンガード１２の、ファン１３の外周部と対向する領域を筐体１１の外面方向へ傾斜した傾斜部３１ｂとしている。すなわち、ファンガード１２の、外周部である傾斜部３１ｂは、外周側端部に向かうにしたがって筐体１１の前面１１ｂからの高さが漸次低くなっている。これにより、室外機１は、筐体１１の外面（前面１１ｂ）からのファンガード１２の突出を抑制し、大型化を抑制することができる。また、ファンガード１２が突出部３１ａの周りに傾斜部３１ｂを有することにより、良好なデザインとなっている。 (Advantages of outdoor unit 1)
In the outdoor unit 1 of the present embodiment, a region of the fan guard 12 provided so as to protrude from the outer surface of the housing 11 is opposed to the outer peripheral portion of the fan 13 as an inclined portion 31b inclined toward the outer surface of the housing 11. Yes. That is, the inclination part 31b which is an outer peripheral part of the fan guard 12 is gradually lowered from the front surface 11b of the housing 11 toward the outer peripheral side end part. Thereby, the outdoor unit 1 can suppress the protrusion of the fan guard 12 from the outer surface (front surface 11b) of the housing | casing 11, and can suppress enlargement. In addition, the fan guard 12 has an inclined portion 31b around the protruding portion 31a, so that a good design is achieved.
　また、室外機１は、ファンガード１２の、傾斜部３１ｂよりも内側の領域である突出部３１ａの桟１２ａのピッチを大人用試験指２１を挿入できるピッチとすることにより、送風性能の低下を抑制することができる。 In addition, the outdoor unit 1 reduces the air blowing performance by setting the pitch of the crosspieces 12a of the protruding portion 31a, which is an area inside the inclined portion 31b, of the fan guard 12 to a pitch at which the adult test finger 21 can be inserted. Can be suppressed.
　また、室外機１は、ファンガード１２の、ファン１３との距離が近くなる傾斜部３１ｂの桟１２ａのピッチを大人用試験指２１を挿入できないピッチとし、突出部３１ａの前面とファン１３との距離Ｈａ１（突出部３１ａの前面とファン１３との最短距離）を大人用試験指２１よりも長くしている。これにより、安全性を確保することができる。 Further, the outdoor unit 1 sets the pitch of the crosspiece 12a of the inclined portion 31b where the distance between the fan guard 12 and the fan 13 is short so that the adult test finger 21 cannot be inserted, and the front surface of the protruding portion 31a and the fan 13 The distance Ha1 (the shortest distance between the front surface of the protrusion 31a and the fan 13) is longer than that of the adult test finger 21. Thereby, safety can be ensured.
　したがって、室外機１は、送風性能の低下を抑制しながら、筐体１１の外面に対するファンガード１２の突出を抑制し、これによって大型化を抑制することができる。 Therefore, the outdoor unit 1 can suppress the protrusion of the fan guard 12 with respect to the outer surface of the housing 11 while suppressing a decrease in the air blowing performance, thereby suppressing an increase in size.
　また、ファンガード１２を成型型により樹脂成形する場合、側面部３２の桟１２ａは、通常、室外機１の前後方向（ファンガード１２の突出方向）に延びる桟１２ａのみの形状となる。この場合、側面部３２が室外機１の前後方向に長いと、桟１２ａは隣り合う桟１２ａ同士の間隔が広がる方向に変形し易く、指を挿入し易くなる。これに対し、本実施形態のファンガード１２は、傾斜部３１ｂを有することにより、室外機１の前後方向における側面部３２の長さが短く、側面部３２の桟１２ａの長さも短くなっている。したがって、側面部３２では桟１２ａのピッチを非常に短くしなくても指の侵入を防止し易く、これによって側面部３２での送風抵抗を小さくすることができる。 In addition, when the fan guard 12 is resin-molded with a molding die, the crosspiece 12a of the side surface portion 32 is usually only the crosspiece 12a extending in the front-rear direction of the outdoor unit 1 (the protruding direction of the fanguard 12). In this case, when the side surface portion 32 is long in the front-rear direction of the outdoor unit 1, the crosspieces 12a are easily deformed in a direction in which the interval between the adjacent crosspieces 12a is widened, and a finger is easily inserted. On the other hand, the fan guard 12 of this embodiment has the inclined portion 31b, so that the length of the side surface portion 32 in the front-rear direction of the outdoor unit 1 is short, and the length of the crosspiece 12a of the side surface portion 32 is also short. . Therefore, in the side surface portion 32, it is easy to prevent a finger from entering even if the pitch of the crosspieces 12a is not extremely shortened, and thereby the blowing resistance in the side surface portion 32 can be reduced.
　ここで、例えば、ファンガード１２が前面部３１に傾斜部３１ｂを有していない形状とした場合、前面部３１の全体が突出部３１ａとなる。この形状において、前面部３１の突出量を抑制しようとすれば、前面部３１全体の桟１２ａのピッチを短くする必要がある。この場合には、送風抵抗が大きくなり、送風性能が低下する。一方、送風性能の低下を防止するために、前面部３１の桟１２ａのピッチを大人用試験指２１が入る程度に長くすれば、前面部３１から挿入された大人用試験指２１がファン１３と接触しないように、前面部３１全体を筐体１１の外面に対して大きく突出させる必要がある。この場合には、ファンガード１２を含む室外機１の形状が大型化する。本実施形態のように、ファンガード１２が前面部３１に傾斜部３１ｂを有している形状では、室外機１の送風性能の低下の抑制および室外機１の大型化の抑制に対応可能である。 Here, for example, when the fan guard 12 has a shape in which the front surface portion 31 does not have the inclined portion 31b, the entire front surface portion 31 becomes the protruding portion 31a. In this shape, if it is going to suppress the protrusion amount of the front part 31, it is necessary to shorten the pitch of the crosspieces 12a of the front part 31 whole. In this case, the blowing resistance is increased, and the blowing performance is reduced. On the other hand, if the pitch of the crosspieces 12a of the front surface portion 31 is increased to the extent that the adult test finger 21 can be inserted in order to prevent the air blowing performance from being lowered, the adult test finger 21 inserted from the front surface portion 31 is connected to the fan 13. It is necessary to make the entire front surface portion 31 protrude greatly from the outer surface of the housing 11 so as not to contact. In this case, the shape of the outdoor unit 1 including the fan guard 12 is increased. As in the present embodiment, the shape in which the fan guard 12 has the inclined portion 31b on the front surface portion 31 can cope with the suppression of the deterioration of the blowing performance of the outdoor unit 1 and the suppression of the enlargement of the outdoor unit 1. .
　なお、本実施形態の室外機１において、ファンガード１２の前面部３１の傾斜部３１ｂおよび側面部３２の桟１２ａのピッチは、大人用試験指２１を挿入できないピッチとしたが、大人用試験指２１よりも細い、後述する子供用試験指（試験指）２２を挿入できないピッチであってもよい。 In the outdoor unit 1 of the present embodiment, the pitch of the inclined portion 31b of the front surface portion 31 of the fan guard 12 and the crosspiece 12a of the side surface portion 32 is a pitch at which the adult test finger 21 cannot be inserted. The pitch may be smaller than 21 and cannot be inserted with a child test finger (test finger) 22 described later.
〔実施形態２〕
　本発明の他の実施形態について、以下に説明する。なお、説明の便宜上、上記実施形態にて説明した部材と同じ機能を有する部材については、同じ符号を付記し、その説明を繰り返さない。 [Embodiment 2]
Another embodiment of the present invention will be described below. For convenience of explanation, members having the same functions as those described in the above embodiment are given the same reference numerals, and the description thereof will not be repeated.
　図６は、本実施形態の室外機の縦断面図である。図６に示すように、本実施形態の室外機２は、図３に示したファンガード１２に代えて、ファンガード４１を備えている。 FIG. 6 is a longitudinal sectional view of the outdoor unit of the present embodiment. As shown in FIG. 6, the outdoor unit 2 of the present embodiment includes a fan guard 41 instead of the fan guard 12 shown in FIG. 3.
（ファンガード４１の構成の概要）
　ファンガード４１は、ファンガード１２と同様の外観を有し、図６に示すように、前面部４２、突出部４２ａ、傾斜部（外周部）４２ｂおよび非開口部４２ｃ、並びに側面部４３を有する。これら前面部４２、突出部４２ａ、傾斜部４２ｂおよび非開口部４２ｃ、並びに側面部４３は、それぞれファンガード１２の前面部３１、突出部３１ａ、傾斜部３１ｂおよび非開口部３１ｃ、並びに側面部３２に対応する。また、桟４１ａは、ファンガード１２の桟１２ａに対応する。 (Outline of the configuration of the fan guard 41)
The fan guard 41 has the same appearance as the fan guard 12 and includes a front surface portion 42, a protruding portion 42a, an inclined portion (outer peripheral portion) 42b, a non-opening portion 42c, and a side surface portion 43, as shown in FIG. . The front surface portion 42, the protruding portion 42a, the inclined portion 42b and the non-opening portion 42c, and the side surface portion 43 are respectively the front surface portion 31, the protruding portion 31a, the inclined portion 31b, the non-opening portion 31c, and the side surface portion 32 of the fan guard 12. Corresponding to Further, the crosspiece 41 a corresponds to the crosspiece 12 a of the fan guard 12.
（ファンガード４１の構成の詳細）
　図７は、室外機２に対する子供用試験指２２を示す正面図である。子供用試験指（試験指）２２は、子供の指を想定したものであり、図５に示した大人用試験指２１よりも細くかつ短い。なお、図７に記載している子供用試験指２２の寸法は、特定の規格についてのものであり、一例である。 (Details of the configuration of the fan guard 41)
FIG. 7 is a front view showing the child test finger 22 for the outdoor unit 2. The child test finger (test finger) 22 is assumed to be a child's finger, and is thinner and shorter than the adult test finger 21 shown in FIG. In addition, the dimension of the test finger | toe 22 for children described in FIG. 7 is a thing about a specific specification, and is an example.
　ファンガード４１について、前面部４２の突出部４２ａの桟４１ａのピッチは、子供用試験指２２を挿入でき、大人用試験指２１を挿入できないピッチとなっている。一方、前面部４２の傾斜部４２ｂおよび側面部４３の桟４１ａのピッチは、突出部４２ａの桟４１ａのピッチよりも短く、大人用試験指２１および子供用試験指２２を挿入できないピッチとなっている。 With respect to the fan guard 41, the pitch of the crosspiece 41a of the protruding portion 42a of the front surface portion 42 is such that the child test finger 22 can be inserted and the adult test finger 21 cannot be inserted. On the other hand, the pitch of the inclined portion 42b of the front surface portion 42 and the crosspiece 41a of the side surface portion 43 is shorter than the pitch of the crosspiece 41a of the protruding portion 42a, so that the adult test finger 21 and the child test finger 22 cannot be inserted. Yes.
　突出部４２ａの前面に垂直な方向の、突出部４２ａの前面とファン１３の中央突出部１３ａとの距離Ｈｂ１は、子供用試験指２２よりも長く、大人用試験指２１よりも短くなっている。また、突出部４２ａの前面に垂直な方向の、突出部４２ａの前面とファン１３の外周突出部１３ｂとの距離Ｈｂ２は、距離Ｈｂ１よりも短くなっている。また、傾斜部４２ｂの前面は、突出部４２ａの前面よりも後方へ退行するように傾斜しているので、傾斜部４２ｂの前面とファン１３の外周突出部１３ｂとの距離は、距離Ｈｂ２よりもさらに短くなっている。 The distance Hb1 between the front surface of the protrusion 42a and the central protrusion 13a of the fan 13 in the direction perpendicular to the front surface of the protrusion 42a is longer than the test finger 22 for children and shorter than the test finger 21 for adults. . Further, the distance Hb2 between the front surface of the protrusion 42a and the outer peripheral protrusion 13b of the fan 13 in the direction perpendicular to the front surface of the protrusion 42a is shorter than the distance Hb1. Further, since the front surface of the inclined portion 42b is inclined so as to retract backward from the front surface of the protruding portion 42a, the distance between the front surface of the inclined portion 42b and the outer peripheral protruding portion 13b of the fan 13 is larger than the distance Hb2. It is even shorter.
（室外機２の利点）
　本実施形態の室外機２は、ファンガード４１が大人用試験指２１に加えて子供用試験指２２にも対応し、大人および子供に対する安全を高めた構成となっている。 (Advantages of outdoor unit 2)
In the outdoor unit 2 of the present embodiment, the fan guard 41 corresponds to the child test finger 22 in addition to the adult test finger 21, and is configured to enhance safety for adults and children.
　本実施形態の室外機２は、前述した室外機１と同様、筐体１１の外面から突出するように設けられたファンガード４１の、ファン１３の外周部と対向する領域を筐体１１の外面方向へ傾斜した傾斜部４２ｂとしている。これにより、室外機２は、筐体１１の外面からのファンガード４１の突出を抑制し、大型化を抑制することができる。また、ファンガード４１が突出部４２ａの周りに傾斜部４２ｂを有することにより、良好なデザインとなっている。 In the outdoor unit 2 of the present embodiment, the area facing the outer peripheral portion of the fan 13 of the fan guard 41 provided so as to protrude from the outer surface of the housing 11 is the same as the outdoor unit 1 described above. The inclined portion 42b is inclined in the direction. Thereby, the outdoor unit 2 can suppress the protrusion of the fan guard 41 from the outer surface of the housing 11 and suppress the increase in size. In addition, the fan guard 41 has an inclined portion 42b around the protruding portion 42a, so that the design is good.
　また、室外機２は、ファンガード４１の、ファン１３との距離が近くなる突出部４２ａの桟４１ａのピッチを子供用試験指２２を挿入できるピッチとすることにより、送風性能の低下を抑制することができる。 Moreover, the outdoor unit 2 suppresses the deterioration of the air blowing performance by setting the pitch of the crosspiece 41a of the protruding portion 42a at which the distance between the fan guard 41 and the fan 13 is close to the pitch at which the child test finger 22 can be inserted. be able to.
　また、室外機２は、ファンガード４１の、ファン１３との距離が近くなる傾斜部４２ｂの桟４１ａのピッチを大人用試験指２１および子供用試験指２２が挿入できないピッチとし、突出部４２ａの前面とファン１３との距離Ｈｂ１を子供用試験指２２よりも長くしている。これにより、安全性を確保することができる。 Further, the outdoor unit 2 sets the pitch of the crosspiece 41a of the inclined portion 42b where the distance between the fan guard 41 and the fan 13 is short so that the adult test finger 21 and the child test finger 22 cannot be inserted, and the protrusion 42a The distance Hb <b> 1 between the front surface and the fan 13 is longer than that of the child test finger 22. Thereby, safety can be ensured.
　したがって、室外機２は、送風性能の低下を抑制しながら、筐体１１の外面に対するファンガード４１の突出を抑制し、これによって大型化を抑制することができる。 Therefore, the outdoor unit 2 can suppress the protrusion of the fan guard 41 with respect to the outer surface of the housing 11 while suppressing the deterioration of the air blowing performance, thereby suppressing the increase in size.
　ファンガード４１を備えることによる室外機２のその他の利点は、ファンガード１２を備えることによる室外機１の利点と同様である。 Other advantages of the outdoor unit 2 provided with the fan guard 41 are the same as the advantages of the outdoor unit 1 provided with the fan guard 12.
〔実施形態３〕
　本発明のさらに他の実施形態について、以下に説明する。なお、説明の便宜上、上記実施形態にて説明した部材と同じ機能を有する部材については、同じ符号を付記し、その説明を繰り返さない。 [Embodiment 3]
Still another embodiment of the present invention will be described below. For convenience of explanation, members having the same functions as those described in the above embodiment are given the same reference numerals, and the description thereof will not be repeated.
　図８は、本実施形態の室外機の縦断面図である。図８に示すように、本実施形態の室外機３は、図３に示したファンガード１２に代えて、ファンガード５１を備えている。 FIG. 8 is a longitudinal sectional view of the outdoor unit of the present embodiment. As shown in FIG. 8, the outdoor unit 3 of this embodiment is provided with a fan guard 51 instead of the fan guard 12 shown in FIG.
（ファンガード５１の構成）
　室外機３のファンガード５１は、前面部３１に、ファンガード１２の前面部３１の傾斜部３１ｂとは異なる傾斜部（外周部）３１ｄを有する。具体的には、ファンガード１２の傾斜部３１ｂが直線状に傾斜していたのに対し、ファンガード５１の傾斜部３１ｄは、前方へ凸状に緩やかに湾曲しながら、筐体１１の前面１１ｂに向って傾斜している。 (Configuration of fan guard 51)
The fan guard 51 of the outdoor unit 3 has an inclined part (outer peripheral part) 31 d different from the inclined part 31 b of the front part 31 of the fan guard 12 on the front part 31. Specifically, the inclined portion 31b of the fan guard 12 is linearly inclined, whereas the inclined portion 31d of the fan guard 51 is gently curved in a convex shape forward, while the front surface 11b of the housing 11 is bent. It is inclined toward.
　ファンガード５１の他の構成はファンガード１２と同様である。なお、傾斜部３１ｄが前方へ凸状に緩やかに湾曲しているファンガード５１の構成は、前述したファンガード４１の傾斜部４２ｂに対しても同様に適用可能である。 Other configurations of the fan guard 51 are the same as those of the fan guard 12. It should be noted that the configuration of the fan guard 51 in which the inclined portion 31d is gently curved forward and convexly can be similarly applied to the inclined portion 42b of the fan guard 41 described above.
（室外機３の利点）
　プロペラファンであるファン１３は風を斜め前方に吹き出すので、ファンガード５１の傾斜部３１ｄには、ファン１３が吹き出した風が斜め前方に向って吹き付けられる。一方、ファンガード５１の傾斜部３１ｄは、前方へ凸状に湾曲しているので、突出部３１ａの前面と平行な方向において、傾斜部３１ｄの桟１２ａがファンガード１２の傾斜部３１ｂの桟１２ａと同じピッチで配置されている場合、一つの桟１２ａの前方側端部とその桟１２ａに隣り合う桟１２ａの後方側端部との間隔は、ファン１３が吹き付ける風の方向から見て、傾斜部３１ｄの方が傾斜部３１ｂよりも広くなる。これにより、傾斜部３１ｄでの送風抵抗は傾斜部３１ｂでの送風抵抗よりも小さく、ファンガード５１の方がファンガード１２よりも送風性能が良好となる。また、ファンガード５１は、傾斜部３１ｄが前方へ凸状に緩やかに湾曲しているので、良好なデザインとなっている。 (Advantages of outdoor unit 3)
Since the fan 13 that is a propeller fan blows the wind diagonally forward, the wind blown by the fan 13 is blown diagonally forward to the inclined portion 31 d of the fan guard 51. On the other hand, since the inclined portion 31d of the fan guard 51 is convexly curved forward, the crosspiece 12a of the inclined portion 31d is connected to the crosspiece 12a of the inclined portion 31b of the fanguard 12 in a direction parallel to the front surface of the protruding portion 31a. Are arranged at the same pitch, the distance between the front end of one crosspiece 12a and the rear end of the crosspiece 12a adjacent to the crosspiece 12a is inclined as viewed from the direction of the wind blown by the fan 13. The portion 31d is wider than the inclined portion 31b. As a result, the blowing resistance at the inclined portion 31 d is smaller than the blowing resistance at the inclined portion 31 b, and the fan guard 51 has better blowing performance than the fan guard 12. The fan guard 51 has a good design because the inclined portion 31d is gently curved in a convex shape forward.
　ファンガード５１を備えることによる室外機３のその他の利点は、ファンガード１２を備えることによる室外機１の利点と同様である。また、ファンガード５１の傾斜部３１ｄの構成を室外機２のファンガード４１の傾斜部４２ｂに適用した場合、室外機２は、室外機３の傾斜部３１ｄを有することによる上記利点と同様の利点をさらに有する。 The other advantages of the outdoor unit 3 by providing the fan guard 51 are the same as the advantages of the outdoor unit 1 by providing the fan guard 12. Further, when the configuration of the inclined portion 31 d of the fan guard 51 is applied to the inclined portion 42 b of the fan guard 41 of the outdoor unit 2, the outdoor unit 2 has the same advantages as the above-described advantages due to having the inclined portion 31 d of the outdoor unit 3. It has further.
〔まとめ〕
　本発明の態様１に係る空気調和機の室外機は、筐体１１の内部にプロペラファンであるファン１３が設けられ、前記筐体１１の前面１１ｂに開口された空気吹出口１１ａが、前記ファン１３と対向する前面部３１に多数の開口部を有するファンガードにて覆われている空気調和機の室外機において、前記ファンガード１２は、前記前面部３１に、前記ファン１３の径方向の、内側部分と対向する突出部３１ａおよび外側部分と対向する外周部（傾斜部３１ｂ）を有し、前記突出部３１ａは、試験指を挿入でき、かつ前記突出部３１ａの前面と前記ファン１３との最短距離が前記試験指よりも長く、前記外周部は、前記試験指を挿入できず、かつ外周側端部に向かうにしたがって前記筐体１１の前記前面１１ｂからの高さが漸次低くなっている。 [Summary]
In the outdoor unit for an air conditioner according to the first aspect of the present invention, a fan 13 that is a propeller fan is provided inside a casing 11, and an air outlet 11 a that is opened in a front surface 11 b of the casing 11 includes the fan 11. In the outdoor unit of the air conditioner that is covered with a fan guard having a large number of openings in the front surface portion 31 that faces the front surface portion 13, the fan guard 12 is connected to the front surface portion 31 in the radial direction of the fan 13. It has a protrusion 31a facing the inner part and an outer peripheral part (inclined part 31b) facing the outer part, and the protrusion 31a can insert a test finger, and the front surface of the protrusion 31a and the fan 13 The shortest distance is longer than the test finger, and the outer peripheral portion cannot insert the test finger, and the height from the front surface 11b of the housing 11 gradually decreases toward the outer peripheral end.
　上記の構成によれば、ファンガード１２の外周部は、外周側端部に向かうにしたがって筐体１１の前面１１ｂからの高さが漸次低くなっている。これにより、室外機は、筐体１１の外面（前面１１ｂ）からのファンガード１２の突出を抑制し、大型化を抑制することができる。 According to the above configuration, the height of the outer periphery of the fan guard 12 from the front surface 11b of the housing 11 gradually decreases toward the outer peripheral end. Thereby, an outdoor unit can suppress protrusion of the fan guard 12 from the outer surface (front surface 11b) of the housing | casing 11, and can suppress enlargement.
　また、ファンガード１２の突出部３１ａは試験指を挿入できる。すなわち突出部３１ａに形成されている開口部は、試験指を挿入できるだけの広さを有している。これにより、ファンガード１２の突出部３１ａは送風抵抗が小さく、室外機は、送風性能の低下を抑制することができる。 Further, the test finger can be inserted into the protruding portion 31a of the fan guard 12. That is, the opening formed in the protruding portion 31a has a width enough to insert the test finger. Thereby, the protrusion part 31a of the fan guard 12 has small ventilation resistance, and the outdoor unit can suppress the fall of ventilation performance.
　また、室外機は、ファンガード１２の突出部３１ａの前面とファン１３との最短距離が試験指よりも長く、ファンガード１２の外周部は、試験指を挿入できない。これにより、室外機は、安全性を確保することができる。 Also, in the outdoor unit, the shortest distance between the front surface of the protrusion 31a of the fan guard 12 and the fan 13 is longer than the test finger, and the test finger cannot be inserted into the outer periphery of the fan guard 12. Thereby, the outdoor unit can ensure safety.
　したがって、室外機は、送風性能の低下を抑制しながら、筐体１１の外面に対するファンガード１２の突出を抑制し、これによって大型化を抑制することができる。 Therefore, the outdoor unit can suppress the protrusion of the fan guard 12 with respect to the outer surface of the housing 11 while suppressing the deterioration of the air blowing performance, thereby suppressing the increase in size.
　本発明の態様２に係る空気調和機の室外機は、上記態様１において、前記試験指は、相対的に長さが長くかつ太い大人用試験指と、相対的に長さが短くかつ細い子供用試験指とがあり、前記試験指は大人用試験指である構成としてもよい。 An outdoor unit of an air conditioner according to aspect 2 of the present invention is the air conditioner outdoor unit according to aspect 1, wherein the test finger is a relatively long and thick adult test finger, and a relatively short and thin child. The test finger may be a test finger for adults.
　上記の構成によれば、試験指は大人用試験指であるので、室外機は、大人に対する安全性を確保することができる。 According to the above configuration, since the test finger is an adult test finger, the outdoor unit can ensure safety for adults.
　本発明の態様３に係る空気調和機の室外機は、上記態様１において、前記試験指は、相対的に長さが長くかつ太い大人用試験指と、相対的に長さが短くかつ細い子供用試験指とがあり、前記試験指は子供用試験指である構成としてもよい。 An outdoor unit of an air conditioner according to aspect 3 of the present invention is the air conditioner outdoor unit according to aspect 1, wherein the test finger is a relatively long and thick adult test finger, and a relatively short and thin child. The test finger may be a child's test finger.
　上記の構成によれば、試験指は子供用試験指であるので、送風性能は試験指が大人用試験指である場合よりも若干低下するものの、室外機は、大人および子供に対する安全性を確保することができる。 According to the above configuration, because the test finger is a test finger for children, the ventilation performance is slightly lower than when the test finger is an adult test finger, but the outdoor unit ensures safety for adults and children. can do.
　本発明の態様４に係る空気調和機の室外機は、上記態様１から３のいずれか１態様において、前記ファンガード５１の前記前面部３１の前記開口部は、前記前面部３１を形成する複数の桟１２ａの間に形成され、前記前面部３１の前記外周部（傾斜部３１ｄ）は、前方へ凸状に湾曲している構成としてもよい。 The outdoor unit of the air conditioner according to aspect 4 of the present invention is the air conditioner outdoor unit according to any one of the aspects 1 to 3, wherein the opening of the front part 31 of the fan guard 51 forms a plurality of front parts 31. It is good also as a structure which is formed between the crosspieces 12a, and the said outer peripheral part (inclined part 31d) of the said front-surface part 31 is curving convexly ahead.
　上記の構成によれば、ファン１３は風を斜め前方に吹き出し、ファンガード５１の外周部には、ファン１３が吹き出した風が斜め前方に向って吹き付けられる。一方、ファンガード５１の外周部は、前方へ凸状に湾曲しているので、一つの桟１２ａの前方側端部とその桟１２ａに隣り合う桟１２ａの後方側端部との間隔は、ファン１３が吹き付ける風の方向から見て、外周部が、前方へ凸状に湾曲している場合の方が例えば直線状に傾斜している場合よりも広くなる。これにより、ファンガード５１は外周部での送風抵抗が小さく、このようなファンガード５１を備えた室外機は、送風性能が良好となる。 According to the above configuration, the fan 13 blows wind obliquely forward, and the wind blown by the fan 13 is blown obliquely forward on the outer periphery of the fan guard 51. On the other hand, since the outer periphery of the fan guard 51 is convexly curved forward, the distance between the front end of one crosspiece 12a and the rear end of the crosspiece 12a adjacent to the crosspiece 12a is determined by the fan When viewed from the direction of the wind blown by 13, the case where the outer peripheral portion is curved forward is wider than the case where it is inclined linearly, for example. Thereby, the fan guard 51 has a small blowing resistance at the outer peripheral portion, and the outdoor unit including the fan guard 51 has a good blowing performance.
　本発明は上述した各実施形態に限定されるものではなく、請求項に示した範囲で種々の変更が可能であり、異なる実施形態にそれぞれ開示された技術的手段を適宜組み合わせて得られる実施形態についても本発明の技術的範囲に含まれる。さらに、各実施形態にそれぞれ開示された技術的手段を組み合わせることにより、新しい技術的特徴を形成することができる。 The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention. Furthermore, a new technical feature can be formed by combining the technical means disclosed in each embodiment.

Claims (4)

  1. 　筐体の内部にプロペラファンであるファンが設けられ、前記筐体の前面に開口された空気吹出口が、前記ファンと対向する前面部に多数の開口部を有するファンガードにて覆われている空気調和機の室外機において、
    　前記ファンガードは、前記前面部に、前記ファンの径方向の、内側部分と対向する突出部および外側部分と対向する外周部を有し、
    　前記突出部は、試験指を挿入でき、かつ前記突出部の前面と前記ファンとの最短距離が前記試験指よりも長く、
    　前記外周部は、前記試験指を挿入できず、かつ外周側端部に向かうにしたがって前記筐体の前記前面からの高さが漸次低くなっていることを特徴とする空気調和機の室外機。     A fan, which is a propeller fan, is provided inside the housing, and an air outlet opening in the front surface of the housing is covered with a fan guard having a large number of openings on the front surface facing the fan. In outdoor unit of air conditioner,
    The fan guard has, on the front surface portion, a projecting portion facing the inner portion and an outer peripheral portion facing the outer portion in the radial direction of the fan,
    The protrusion can insert a test finger, and the shortest distance between the front surface of the protrusion and the fan is longer than the test finger.
    The outdoor unit of the air conditioner, wherein the outer peripheral part cannot insert the test finger and the height from the front surface of the housing gradually decreases toward the outer peripheral side end part.
  2. 　前記試験指は、相対的に長さが長くかつ太い大人用試験指と、相対的に長さが短くかつ細い子供用試験指とがあり、前記試験指は大人用試験指であることを特徴とする請求項１に記載の空気調和機の室外機。 The test finger has a relatively long and thick adult test finger and a relatively short and thin child test finger, and the test finger is an adult test finger. The outdoor unit of the air conditioner according to claim 1.
  3. 　前記試験指は、相対的に長さが長くかつ太い大人用試験指と、相対的に長さが短くかつ細い子供用試験指とがあり、前記試験指は子供用試験指であることを特徴とする請求項１に記載の空気調和機の室外機。 The test finger has a relatively long and thick adult test finger and a relatively short and thin child test finger, and the test finger is a child test finger. The outdoor unit of the air conditioner according to claim 1.
  4. 　前記ファンガードの前記前面部における前記外周部は、前方へ凸状に湾曲していることを特徴とする請求項１から３のいずれか１項に記載の空気調和機の室外機。 The outdoor unit of an air conditioner according to any one of claims 1 to 3, wherein the outer peripheral portion of the front portion of the fan guard is curved forward.
PCT/JP2018/034630 2018-02-20 2018-09-19 Outdoor unit for air conditioners WO2019163177A1 (en)

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JP2007285702A (en) * 2005-11-01 2007-11-01 Daikin Ind Ltd Outdoor unit for air conditioner
JP2010181116A (en) * 2009-02-09 2010-08-19 Panasonic Corp Air conditioner
JP2012233657A (en) * 2011-05-09 2012-11-29 Panasonic Corp Outdoor unit of air conditioner
JP2013072565A (en) * 2011-09-27 2013-04-22 Hitachi Appliances Inc Heat source machine and refrigerating cycle device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6181570U (en) * 1984-11-02 1986-05-30
JPH01159498A (en) * 1987-12-14 1989-06-22 Mitsubishi Electric Corp Ventilating device
JP2007285702A (en) * 2005-11-01 2007-11-01 Daikin Ind Ltd Outdoor unit for air conditioner
JP2010181116A (en) * 2009-02-09 2010-08-19 Panasonic Corp Air conditioner
JP2012233657A (en) * 2011-05-09 2012-11-29 Panasonic Corp Outdoor unit of air conditioner
JP2013072565A (en) * 2011-09-27 2013-04-22 Hitachi Appliances Inc Heat source machine and refrigerating cycle device

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